Tokushima University / Educator and Researcher Directory --- Jiang, Jing-Cai

Personal Web Page

https://researchmap.jp/read0046128 (researchmap)

Field of Study

○	Geotechnical Engineering

Subject of Study

○	地盤災害・地盤防災に関する研究, 巨大地震による広域地盤変動に関する研究, 風水害・地震災害等に関する調査研究, 中国淮河の流域治水及び遊水地利用に関する調査研究, 要配慮者利用施設の土砂災害時の対応 (earthquake, 豪雨, 地盤防災, 風水害減災, 災害調査, 流域治水) (地盤防災，風水害減災，巨大地震による広域地盤変動等の研究を行っている．各種災害に関する調査研究や中国淮河の流域治水及び遊水地利用に関する調査研究などにも取り組んでいる．)

Book / Paper

Book:

1.	丸井英明, Jing-Cai Jiang and 他 : 地震地すべり-地震地すべりプロジェクト特別委員会の総括編-, 社団法人日本地すべり学会, Tokyo, Feb. 2012. (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.49.150 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.3313/jls.49.150 (DOI: 10.3313/jls.49.150)
2.	Jing-Cai Jiang : 斜面の安定・変形解析入門-基礎から実例まで-，第3章斜面およびすべり面の土の強度，土質定数の決め方，3.1.3 逆解析による方法, The Japanese Geotechnical Society, Tokyo, Aug. 2006.
3.	N. Yagi, Takuo Yamagami and Jing-Cai Jiang : Slope Stability Engineering (Proceedings of the International Symposium on Slope Stability Engineering), A.A.Balkema Publishers, Nov. 1999.

Academic Paper (Judged Full Paper):

1.	Tsunataka Furuya and Jing-Cai Jiang : Estimation of slip surfaces using the results of groundwater logging in fracture zone landslides, Engineering Geology for a Habitable Earth: IAEG XIV Congress 2023 Proceedings, Volume 2: Geohazard Mechanisms, Risk Assessment and Control, Monitoring and Early Warning, Sep. 2023., Vol.Vol.2, 101-106, 2023. (Keyword) fracture zone landslides / failure surface, / groundwater / salt logging / magnetic susceptibility
2.	Susumu Nakano, Junko Kanai, Masayuki Hasegawa, Takahiro Ogawa, Jing-Cai Jiang and Masahiko Tokunaga : INUNDATION DAMAGE IN ASHIKITA TOWN, KUMAMOTO PREFECTURE DUE TO THE HEAVY RAIN IN JULY 2020 AND BUSINESS CONTINUITY OF SCHOOLS AND NURSERY SCHOOLS, Journal of Japan Society of Civil Engineers, Ser. F6 (Safety Problem), Vol.78, No.2, I_165-I_176, 2023. (Summary) The Sashiki River was flooded by the flood disaster caused by the heavy rain in July 2020, and more than 1,500 houses were flooded in Ashikita Town. Due to this flood, schools and nursery schools in Ashi-kita Town were closed due to flooding of 0.1 to 1.6 m above the floor. From July 2020 to March 2021, a total of three inundation trace surveys and RTK-GNSS surveys were conducted, and inundation depth and elevation surveys were conducted at a total of 43 points. In December 2021, we visited the Board of Education and the nursery school and interviewed them about business continuity meth-ods and issues. A two-dimensional flood inundation analysis was carried out for both the Sashiki and Yunoura river basins, and the inundation process was analyzed. Based on these results, we considered inundation measures for schools and nursery schools located in inundated areas and proactive measures for business continuity. (Keyword) business continuity / flood damage / the heavy rain event of July 2020 / school / nursery school (Tokushima University Institutional Repository) ● Metadata: 118019 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejsp.78.2_I_165 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390857977632343936 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejsp.78.2_I_165 (Tokushima University Institutional Repository: 118019, DOI: 10.2208/jscejsp.78.2_I_165, CiNii: 1390857977632343936)
3.	Yasufumi Yuasa, 宮地武彦, Jing-Cai Jiang and Yasunori Kozuki : RESPONSES OF DIALYSIS MEDICAL INSTITUTIONS DURING WATER OUTAGES DUE TO TYPHOON TALAS IN 2022 AND FUTURE ISSUES, Japanese Journal of JSCE, Vol.79, No.24, 23-24015, 2023. (Summary) In this paper, we extracted lessons for dialysis medical institutions to quickly respond to water outages due to disasters, and aimed to utilize them for future preventive measures. We conducted an interview survey with dialysis medical institutions and water service providers due to water outages in Shimizu Ward, clarified their actual responses and impacts, and extracted issues in the event of a disaster. In addition, consideration was given to advance measures that should be taken in the future (Keyword) dialysis treatment / medical institution / business continuity / typhoon / water outage (Tokushima University Institutional Repository) ● Metadata: 119088 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejj.23-24015 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390579830889870208 ● Search Scopus @ Elsevier (DOI): 10.2208/jscejj.23-24015 (Tokushima University Institutional Repository: 119088, DOI: 10.2208/jscejj.23-24015, CiNii: 1390579830889870208)
4.	Junko Kanai, Susumu Nakano, Jing-Cai Jiang, Masahiko Tokunaga and Kousuke Hirose : Survey on Evacuation Behavior at Nursing Facilities in Ashikita Town due to Heavy Rain in July 2020, Journal of Japan Society for Natural Disaster Science, Vol.41, No.S, 37-43, 2022. (Summary) The nursing facility C located near the Sashiki River was flooded due to Heavy Rain in July 2020. The survey method was an interview survey on the damage situation and evacuation behavior. In addition, a flood inundation analysis was conducted. Judging from both the execution and the process of flooding, facility C missed the timing of the evacuation action. The main reasons were that the event was beyond one's expectation, information was not helpful, lack of manpower, flooded water rose fast. The lessons of this experience are action plan using information, nighttime emergency system, evacuation drills with multiple patterns. For the safety of elderly people, both an evacuation security plan and a business continuity plan (BCP) are needed. On the other hand, there are administrative issues related to wide-area evacuation. Deregulation of the long-term care insurance system and simplification of administrative procedures are desirable. (Keyword) nursing facility / evacuation plan / the heavy rain in July 2020 (Tokushima University Institutional Repository) ● Metadata: 118046 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390861228325117824 (Tokushima University Institutional Repository: 118046, CiNii: 1390861228325117824)
5.	Susumu Nakano, Jing-Cai Jiang and Yasunori Kozuki : RELATIONSHIP BETWEEN TOPOGRAPHICAL CHANGES AND DEBRIS FLOW OCCURRENCE IN THE UPPER REACHES OF THE AIZOME RIVER, Advances in River Engineering, Vol.28, 397-402, 2022. (Summary) 令和3年7月に熱海市の逢初川源頭部で大規模盛土が崩壊し，深刻な土石流災害が発生した．逢初川源頭部付近で複数行われた地形改変に注目し，これらの地形改変が流出過程に及ぼした影響について数値解析により検討した．地形改変前と後の地形データを用いて令和3年7月豪雨時の雨水流出過程を計算し，逢初川源頭部付近の断面通過水量の比較を行った．その結果，尾根部を削って谷を埋めるなどの宅地造成に伴う地形改変の結果，北側を流れる鳴沢川流域から多量の雨水が逢初川側に流入し，盛土末端部では地形改変前の4倍に達する表流水が通過した可能性があることが明らかとなった． (Keyword) debris flow disaster / the Aizome River / land modification / rainwater runoff process (Tokushima University Institutional Repository) ● Metadata: 117155 (Link to Publication Site) ● Publication site (DOI): 10.11532/river.28.0_397 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390011793672675584 ● Search Scopus @ Elsevier (DOI): 10.11532/river.28.0_397 (Tokushima University Institutional Repository: 117155, DOI: 10.11532/river.28.0_397, CiNii: 1390011793672675584)
6.	Junko Kanai, Susumu Nakano, Jing-Cai Jiang, Masahiko Tokunaga and Kousuke Hirose : INUNDATION INSIDE A LEVEE OF THE YUURA RIVER DUE TO THE HEAVY RAIN IN JULY 2020 AND EVACUATION BEHAVIOR AT NURSING FACILITIES IN ASHIKITA TOWN, Advances in River Engineering, Vol.28, 361-366, 2022. (Summary) 湯浦川の近くに立地する高齢者施設を対象に，被害状況や避難行動等についてインタビュー調査を行った．また，湯浦川の河口付近の氾濫進展状況を数値解析し，施設周辺の浸水過程を再現した．施設職員の証言内容と浸水過程，発表された防災情報を照合することで避難行動の特徴を検証した．職員が少ない夜間の災害対応において，多数の高齢者を少ない職員で避難誘導するには限界があるため，夜間を想定した避難計画や訓練が重要であることを確認した．さらに，感潮域に位置する高齢者施設においては，避難情報や防災気象情報に加え潮位情報を活用することで夜間帯の行動を回避できる可能性が示唆された． (Keyword) evacuation plan / inundation inside a levee / elderly welfare facilities / The Heavy Rain in July 2020 (Tokushima University Institutional Repository) ● Metadata: 117156 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390011793672673280 (Tokushima University Institutional Repository: 117156, CiNii: 1390011793672673280)
7.	Yasufumi Yuasa, Yuuki Ishida, Susumu Nakano and Jing-Cai Jiang : INITIAL RESPONSE AND BUSINESS CONTINUITY IN THE EVENT OF FLOOD DAMAGE AT WATER SUPPLY FACILITY, Journal of Japan Society of Civil Engineers, Ser. F6 (Safety Problem), Vol.76, No.2, I_219-I_227, 2021. (Summary) The heavy rain event of July 2018 caused several severe flood disasters and landslide disasters. Some water supply facilities were damaged and the water supply was interrupted. Since water supply became difficult at water facilities, they received support from other facilities and responded to temporary facilities. We conducted interview surveys on the affected water supply facilities and summarized the way of initial response and the business continuity in the event of inundated damage. In the event of flood damage or landslide damage, the procedure from the initial response to the resumption of recovery was organized, and proactive measures for achieving early recovery were proposed. (Keyword) water supply facility / flood damage / business continuity / heavy rain event of July 2018 / initial response (Tokushima University Institutional Repository) ● Metadata: 117091 (Link to Publication Site) ● Publication site (DOI): 10.2208/jscejsp.76.2_I_219 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.2208/jscejsp.76.2_I_219 (Tokushima University Institutional Repository: 117091, DOI: 10.2208/jscejsp.76.2_I_219)
8.	Ang Liu, Wenli Lin and Jing-Cai Jiang : Investigation of the Long-Term Strength Properties of a Discontinuity by Shear Relaxation Tests, Rock Mechanics and Rock Engineering, Vol.53, No.2, 831-840, 2020. (Link to Publication Site) ● Publication site (DOI): 10.1007/s00603-019-01945-y (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85071503344 (DOI: 10.1007/s00603-019-01945-y, Elsevier: Scopus)
9.	Ang Liu, Wenli Lin and Jing-Cai Jiang : Laboratory and constitutive analysis of relaxation tests for time-dependent properties of discontinuities, Construction and Building Materials, Vol.227, No.12, 1-10, 2019. (Keyword) stress relaxation / discontinuities / asperity crushing/breakage / viscous deformation (Link to Publication Site) ● Publication site (DOI): 10.1016/j.conbuildmat.2019.116688 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85070599097 (DOI: 10.1016/j.conbuildmat.2019.116688, Elsevier: Scopus)
10.	Z. G. Qian, A. J. Li, W. C. Chen, A. V. Lyamin and Jing-Cai Jiang : An artificial neural network approach to inhomogeneous soil slope stability predictions based on limit analysis methods, Soils and Foundations, Vol.59, No.2, 556-569, 2019. (Link to Publication Site) ● Publication site (DOI): 10.1016/j.sandf.2018.10.008 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85062232813 (DOI: 10.1016/j.sandf.2018.10.008, Elsevier: Scopus)
11.	An-Jui Li, Zhiguang Qian, Jing-Cai Jiang and Wang C. : Seismic Slope Stability Evaluation Considering Rock Mass Disturbance Varying in the Slope, KSCE Journal of Civil Engineering, Vol.23, No.3, 1043-1054, 2019. (Link to Publication Site) ● Publication site (DOI): 10.1007/s12205-019-0963-8 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85060127213 (DOI: 10.1007/s12205-019-0963-8, Elsevier: Scopus)
12.	Ang Liu, Guanghui Tian, Wenli Lin and Jing-Cai Jiang : Shear Relaxation Characteristics of Rock Joints under Stepwise Loadings, Comptes Rendus - Mecanique, Vol.346, No.12, 1179-1191, 2018. (Link to Publication Site) ● Publication site (DOI): 10.1016/j.crme.2018.09.001 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85056001720 (DOI: 10.1016/j.crme.2018.09.001, Elsevier: Scopus)
13.	Nian Ting-Kai, Jing-Cai Jiang, Wang Fa-Wu, Yang Qing and Luan Mao-Tain : Seismic stability analysis of slope reinforced with a row of piles, Soil Dynamics and Earthquake Engineering, Vol.84, 83-93, 2016. (Keyword) Seismic stability / Slope reinforced with piles / Yield acceleration / Stabilizing force / Limit analysis (Link to Publication Site) ● Publication site (DOI): 10.1016/j.soildyn.2016.01.023 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.soildyn.2016.01.023 (DOI: 10.1016/j.soildyn.2016.01.023)
14.	李傑龍, Jing-Cai Jiang and Susumu Nakano : 南海トラフ巨大地震による四国太平洋沿岸の地盤沈下予測, 21世紀の南海地震と防災, Vol.10, 49-56, 2016.
15.	Onishi Kazumasa and Jing-Cai Jiang : A new method of slope stability analysis considering progressive failure, Journal of the Japan Landslide Society, Vol.52, No.2, 113-122, 2015. (Summary) A limit equilibrium slope stability analysis method is proposed by considering progressive failure. A local factor of safety is defined at the base of each slice, and a unique idea is introduced to render the highly undeterminate problem determinate. A load-incremental procedure is developed for the analysis of progressive failure of slopes, in which total load including the soil self-weight is divided into many incremental steps, and with each load-incremental step, the analysis is repeated up to the final loading condition. It is shown that local failure and its evolution in slopes can be represented well by the value of local factor of safety. Finally, two problems including an actual failure of the dam are analyzed using the proposed method, and distribution of local failure areas in the slopes and values of the overall factor of safety are agreed with those obtained from FEM analyses. (Keyword) slope stability analysis / progressive failure / limit equilibrium method / local factor of safety / overall factor of safety (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.52.113 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680177150720 ● Search Scopus @ Elsevier (DOI): 10.3313/jls.52.113 (DOI: 10.3313/jls.52.113, CiNii: 1390282680177150720)
16.	Ang Liu, Mingrong Shen and Jing-Cai Jiang : Investigation of the shear stress relaxation characteristics of a structural plane using the isostress cyclic loading method, Geotechnical Testing Journal, Vol.38, No.2, 219-228, 2015. (Link to Publication Site) ● Publication site (DOI): 10.1520/GTJ20140049 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1520/GTJ20140049 (DOI: 10.1520/GTJ20140049)
17.	Tsunataka Furuya and Jing-Cai Jiang : Determination of slip surfaces in fracture zone landslides using oriented borehole core samples, International Journal of GEOMATE, Vol.8, No.1, 1151-1158, 2015. (Keyword) Oriented Core Sample / Slip Surface / Digital Imaging / Equotip / Magnetic susceptibility / CIELAB (Link to Publication Site) ● Publication site (DOI): 10.21660/2015.15.4280 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1521980705019704576 ● Summary page in Scopus @ Elsevier: 2-s2.0-84930251292 (DOI: 10.21660/2015.15.4280, CiNii: 1521980705019704576, Elsevier: Scopus)
18.	Jing-Cai Jiang and Tsunataka Furuya : A Simple Seismic Analysis of Embankment Slopes Stabilized with a Sheet Pile, Construction Engineering (CE), Vol.Volume 2, 21-24, 2014.
19.	Ang Liu, Mingrong Shen, Jing-Cai Jiang and Qingzhao Zhang : determining long-term strength of rock with discontinuity using shear stress relaxation test, China Journal of Rock and Soil Mechanics, Vol.33, No.9, 1916-1921, 2014. (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84907245557 (Elsevier: Scopus)
20.	Kai Zhang, Qing Yang and Jing-Cai Jiang : Numerical simulation of 2D crack growth with frictional contact in brittle materials, International Journal of GEOMATE, Vol.3, No.1&2, 339-342, 2012. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1521699230935346048 ● Summary page in Scopus @ Elsevier: 2-s2.0-84905692054 (CiNii: 1521699230935346048, Elsevier: Scopus)
21.	Biao Zhou, Xiongyao Xie, Yeong Bin Yang and Jing-Cai Jiang : A Novel Vibration-based Structure Health Monitoring Approach for the Shallow Buried Tunnel, Computer Modeling in Engineering & Sciences, Vol.86, No.4, 321-348, 2012. (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-84869811739 (Elsevier: Scopus)
22.	Jing-Cai Jiang : 2008年5月12日四川大地震災害に関する復旧・復興状況の現地調査報告, 21世紀の南海地震と防災, Vol.6, 59-66, 2011.
23.	Tingkai Nian, Jing-Cai Jiang, Shaoshi Wan and Maotian Luan : Strength reduction FE analysis of the stability of bank slopes subjected to transient unsaturated seepage, Electronic Journal of Geotechnical Engineering, Vol.16, No.Bundle A, 165-177, 2011. (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-79251517057 (Elsevier: Scopus)
24.	Jing-Cai Jiang, Yukimasa Kanda and Susumu Nakano : 法先近傍に矢板壁を打設した盛土斜面の地震時安定性評価法, 第13回日本地震工学シンポジウム発表論文集(CD-ROM), 3449-3454, 2010.
25.	Jing-Cai Jiang, Takuo Yamagami and Satoru Yamabe : 進行性破壊を考慮した補強土斜面の安定性評価, 第55回地盤工学シンポジウム平成22年度論文集, 1-6, 2010.
26.	Tingkai Nian, Shaoshi Wan, Jing-Cai Jiang and Maotian Luan : 強度低減弾塑性有限要素法に基づく水位急降下時の斜面安定解析, China Journal of Rock and Soil Mechanics, Vol.31, No.7, 2264-2270, 2010.
27.	Shaoshi Wan, Tingkai Nian, Jing-Cai Jiang and Maotian Luan : 強度低減弾塑性有限要素法による斜面安定解析諸問題に関する考察, China Journal of Rock and Soil Mechanics, Vol.31, No.7, 2283-2289, 2010.
28.	Kazumasa Onishi and Jing-Cai Jiang : 地震力を考慮した斜面の進行性破壊解析に関する研究, 21世紀の南海地震と防災, Vol.Vol.4, 87-90, 2009.
29.	Jing-Cai Jiang, Takuo Yamagami and Nguyen Viet Bao : 地震時盛土斜面の不安定性評価手法による事例検討, 土木学会地震工学論文集, Vol.30, 149-155, 2009. (Keyword) Embankment / stability / earthquake / permanent displacement / Newmark method
30.	Jing-Cai Jiang, Takuo Yamagami and Yoshifumi Tomiyama : A comparison of predicted and observed slope failures due to the 2007 Niigata-Ken Chuetsu Earthquake, Nankai Earthquake and Preventive Efforts, Vol.3, 81-88, 2008.
31.	Jing-Cai Jiang, Takuo Yamagami and Yokino Kazuyoshi : Identification of DEM Parameters for Rockfall Simulation Analysis, Chinese Journal of Rock Mechanics and Engineering, Vol.27, No.12, 2418-2430, 2008. (Summary) Distinct element method (DEM) provides a powerful analytical tool for modeling rockfall behavior (i.e. trajectories, velocities and energies of falling rocks). Better DEM prediction of the motion of the falling rock requires realistic input parameter values used for the analysis. A methodology is developed in which the DEM parameters are determined from back analysis of a rockfall trajectory observed in field rockfall experiments or traced by site investigation of natural rockfall events on a slope. A number of techniques and strategies are proposed to ensure the efficiency and robustness of the solution procedure. The presented method, though in an indirect manner, can evaluate the DEM parameters taking into account the effects of slope deformation and/or impacts between the falling rock and vegetation on the slope. A number of laboratory rockfall experiments on small model slopes were carried out to verify the proposed method. Case studies on well-documented rockfall disaster records are also presented to show the good performance of the method. (Keyword) rockfall / distinct element method / back analysis / DEM parameters / rockfall trajectory (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-58149238086 (Elsevier: Scopus)
32.	Tingkai Nian, Maotian Luan, Defeng Zheng and Jing-Cai Jiang : Simplified analytical procedure of stabilizing piles against sliding considering pore water pressure, Rock and Soil Mechanics, Vol.29, No.4, 263-268, 2008. (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-43749099814 (Elsevier: Scopus)
33.	Jing-Cai Jiang and Takuo Yamagami : A new back analysis of strength parameters from single slips, Computers and Geotechnics, Vol.35, No.2, 286-291, 2008. (Keyword) failures / slopes / back analysis / strength parameters / limit equilibrium / critical slip surface / theoretical analysis / SLOPES / CHARTS (Link to Publication Site) ● Publication site (DOI): 10.1016/j.compgeo.2007.09.004 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.compgeo.2007.09.004 (DOI: 10.1016/j.compgeo.2007.09.004)
34.	Jing-Cai Jiang, Takuo Yamagami and Akito Sugimoto : Seismic instability assessment of rock slopes in a large area based on planar failure mode, Nankai Earthquake and Preventive Efforts, Vol.2, 123-130, 2007.
35.	Tingkai Nian, Maotian Luan, Qing Yang and Jing-Cai Jiang : Stability analysis of slope reinforced with piles using strength reduction FEM, Rock and Soil Mechanics, Vol.28, No.Supplement issue, 558-562, 2007. (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-38049151445 (Elsevier: Scopus)
36.	Jing-Cai Jiang and Takuo Yamagami : Regional seismic slope instability assessment using GIS and Newmark's method, Nankai Earthquake and Preventive Efforts, Vol.1, 109-118, 2006.
37.	Jing-Cai Jiang and Takuo Yamagami : Charts for estimating strength parameters from slips in homogeneous slopes, Computers and Geotechnics, Vol.33, No.6-7, 294-304, 2006. (Keyword) failed slopes / back analysis / strength parameters / limit equilibrium / critical slip surface / graphic methods / BACK-ANALYSIS / STABILITY (Link to Publication Site) ● Publication site (DOI): 10.1016/j.compgeo.2006.07.005 (Link to Search Site for Scientific Articles) ● Search Scopus @ Elsevier (DOI): 10.1016/j.compgeo.2006.07.005 (DOI: 10.1016/j.compgeo.2006.07.005)
38.	Jing-Cai Jiang, Takuo Yamagami and Yukimasa Kanda : Estimation of strength parameters based on maximum thickness of sliding mass in a failed slope, Journal of the Japan Landslide Society, Vol.42, No.1, 8-16, 2005. (Summary) This paper first shows that in a uniform slope with a given pore water pressure distribution the location of the critical slip surface for a particular method of slices is dependent only upon the c'/tanφ' ratio of that slope. Then, two representative types of slope profiles with a rotational sliding mode are presented to model actual slope failures, and two dimensionless parameters are introduced for each of the two slope models. Charts showing the relationship between these two parameters are obtained for typical slope inclinations and three different values of the pore pressure ratio. Using the charts and the safety factor equation of a method of slices, a unique pair of (c', φ') valued can be rapidly determined based on the failure surface in a uniform slope. The proposed method is demonstrated on the results back calculated form two well-documented failed slopes. (Keyword) 逆解析 / 破壊斜面 / 強度定数 / 極限平衡法 / 臨界すべり面 / 計算図表 (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.42.8 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009408884170368 ● Search Scopus @ Elsevier (DOI): 10.3313/jls.42.8 (DOI: 10.3313/jls.42.8, CiNii: 1520009408884170368)
39.	Bao Viet NGUYEN, Jing-Cai Jiang and Takuo Yamagami : Modified Newmark analysis of seismic permanent displacements of slopes, Journal of the Japan Landslide Society, Vol.41, No.5, 12-20, 2005. (Summary) Newmark sliding block models are commonly used for seismic stability analyses of slopes. However, estimation of permanent displacements in conventional Newmark methods is based on a distinct and fixed slip surface which is usually located using a pseudostatic limit equilibrium analysis. By combining a finite element seismic analysis and dynamic programming, this paper first shows that critical slip surfaces within a slope greatly change their shapes and locations over a wide area with time during an earthquake. Then, a modified Newmark analysis is presented in order to consider the effect of variable critical slip surfaces on estimated seismic displacements of slopes. Results of analyses for a hypothetical slope and an actual slope failure caused by an earthquake indicate that the neglect of variation of critical slip surfaces during an earthquake may result in an improper sliding mass and as a result incorrect estimation of permanent displacements. It is also shown that permanent displacement may occur along a relatively wide slip band rather than a distinct slip surface. (Keyword) slope stability / earthquake / permanent displacement / FEM / dynamic programming / critical slip surface (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.41.5_458 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680177421696 ● Search Scopus @ Elsevier (DOI): 10.3313/jls.41.5_458 (DOI: 10.3313/jls.41.5_458, CiNii: 1390282680177421696)
40.	Yukimasa Kanda, Takuo Yamagami, Jing-Cai Jiang and Nguyen Bao Viet : Stability analysis of slopes with two stabilizing walls, Journal of the Japan Landslide Society, Vol.41, No.5, 37-45, 2005. (Summary) A limit equilibrium stability analysis of slopes reinforced with two stabilizing walls (e.g. sheet pile walls) is presented. The basic idea of the proposed method is to allow that three different slip surfaces can be assumed in upslope, midslope and downslope earth masses separated by the two walls. Contrary to the conventional limit equilibrium procedure where a factor of safety is calculated for a given slip surface, in the proposed method forces acting on the stabilizing walls are estimated by specifying a target factor of safety to ensure the stability of the slope. By assuming a slip surface in each of the three earth masses respectively, the forces acting on the walls can be calculated from an existing limit equilibrium method for the prescribed value of the factor of safety. In this paper, the Bishop method is employed, and a repeated trial procedure is used to find the most dangerous state for the walls and the corresponding set of three critical slip surfaces. An illustrative example is presented to demonstrate the effectiveness of the proposed method. (Keyword) stabilizing wall / interactive force / slope stability / limit equilibrium / critical slip surface (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.41.5_483 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009407413112064 ● Search Scopus @ Elsevier (DOI): 10.3313/jls.41.5_483 (DOI: 10.3313/jls.41.5_483, CiNii: 1520009407413112064)
41.	Jing-Cai Jiang and Takuo Yamagami : Three-dimensional slope stability analysis using an extended Spencer method, Soils and Foundations, Vol.44, No.4, 127-135, 2004. (Summary) A search procedure is presented to locate 3D critical slip surfaces by combining dynamic programming with a column method extended from the Spencer safety factor equation for 2D analysis. The procedure was applied to typical 3D problems (conical heaps) in order to make a meaningful comparison with variational approaches. Both minimum safety factors and their associated slip surfaces predicted using the two analyses agreed well for all cases investigated. As variational analysis is a rigorous limit equilibrium method without priori statical assumptions, this good agreement adds confidence to the simplifying assumptions of intercolumn forces for the 3D Spencer method. The comparative study presented in this paper strongly supports a recommendation of the use of a statically rigorous limit equilibrium approach satisfying both force and moment equilibrium for a realistic 3D analysis of the slope stability. (Keyword) 3D analysis / critical slip surface / limit equilibrium / minimum safety factor / slope stability / variational approach (Link to Publication Site) ● Publication site (DOI): 10.3208/sandf.44.4_127 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001204610431872 ● Summary page in Scopus @ Elsevier: 2-s2.0-24744433719 (DOI: 10.3208/sandf.44.4_127, CiNii: 1390001204610431872, Elsevier: Scopus)
42.	Yukimasa Kanda, Takuo Yamagami and Jing-Cai Jiang : Stability analysis of slopes with a stabilizing wall, Journal of the Japan Landslide Society, Vol.40, No.3, 1-7, 2003. (Summary) 矢板などの壁状構造物が打設された斜面の極限平衡法による安定解析法が提案されている．提案法の中心概念は，壁を境にその上·下流側すべり土塊中には互いに異なるすべり面が現れると考えることである．そして，通常の安定解析とは違って，安全率の目標値を設計者が指定し，この安全率を保証するためには壁は如何なる規模と強度のものでなければならないか，といった発想をとる．本文ではビショップ(Bishop)法に基づいて，壁が負担すべき力の評価法と臨界すべり面の探索法が展開されている．壁自体の設計法については一切論じていない．提案法を幾つかの問題に適用した結果，この方法は極めて合理的に解を与えることが判明した． (Keyword) slope stability analysis / limit equilibrium method / stabilizing wall / target factor of safety / critical slip surface (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.40.3_175 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282680177988608 ● Search Scopus @ Elsevier (DOI): 10.3313/jls.40.3_175 (DOI: 10.3313/jls.40.3_175, CiNii: 1390282680177988608)
43.	Jing-Cai Jiang, Kazuyoshi Yokino and Takuo Yamagami : Identification of DEM parameters for rockfall simulation analysis, Chinese Journal of Rock Mechanics and Engineering, Vol.27, No.12, 2418-2430, 2003. (Summary) Distinct element method (DEM) provides a powerful analytical tool for modeling rockfall behavior (i.e. trajectories, velocities and energies of falling rocks). Better DEM prediction of the motion of the falling rock requires realistic input parameter values used for the analysis. A methodology is developed in which the DEM parameters are determined from back analysis of a rockfall trajectory observed in field rockfall experiments or traced by site investigation of natural rockfall events on a slope. A number of techniques and strategies are proposed to ensure the efficiency and robustness of the solution procedure. The presented method, though in an indirect manner, can evaluate the DEM parameters taking into account the effects of slope deformation and/or impacts between the falling rock and vegetation on the slope. A number of laboratory rockfall experiments on small model slopes were carried out to verify the proposed method. Case studies on well-documented rockfall disaster records are also presented to show the good performance of the method. (Keyword) Rockfall / Distinct element method / Back analysis / DEM parameters / Rockfall trajectory
44.	Jing-Cai Jiang, Takuo Yamagami and Rafael Baker : Three-dimensional slope stability analysis based on a nonlinear failure envelope, Chinese Journal of Rock Mechanics and Engineering, Vol.22, No.6, 1017-1023, 2003. (Summary) The failure envelopes for many rock and soil types are significantly nonlinear. Effects of nonlinearity of strength envelopes on 3D slope stability analysis are investigated. A power relation for the nonlinear envelope is employed to derive the 3D factor of safety equations of an extended Spencer method which satisfies both force equilibrium and moment equilibrium. Then, a search procedure is presented based on dynamic programming to determine the 3D critical slip surface for a general slope. Linear and nonlinear strength envelopes used for slope stability computations are obtained by fitting curves to the 103 strength data of consolidated-undrained (CU) triaxial compression tests for compacted Israeli clay. Results of a typical 3D problem show that a linear approximation of the nonlinear strength envelope may lead to a significant overestimation of calculated safety factors. (Keyword) 3D slope stability analysis / critical slip surface / nonlinear strength envelope / Mohr failure criterion / limit equilibrium method
45.	Jing-Cai Jiang, R. Baker and Takuo Yamagami : The effect of strength envelope nonlinearity on slope stability computations, Canadian Geotechnical Journal, Vol.40, No.2, 308-325, 2003. (Summary) Engineering analysis of slope stability includes three separate but interrelated phases: a) experimental strength measurement, b) determination of a strength envelope that best fits the experimental results, and c) formal limiting equilibrium analysis using the resulting strength envelopes. Studying the interrelations between these phases leads to an integrated approach to slope stability analysis. The present work uses a single experimental data base which is fitted with both linear (Mohr-Coulomb) and nonlinear failure envelopes and investigates the effect of different forms of the failure criterion on slope stability computations for both 2D and 3D problems. It has been indicated that calculated minimum safety factors could be significantly overestimated by the linear approximation of a nonlinear strength envelope. The effect of neglecting strength envelope nonlinearity is more pronounced under 3D conditions than their 2-D simplification. As a result, use of nonlinear failure criterions in slope stability analyses is recommended to account for the stress-dependent nature of shear strength of soils. (Keyword) nonlinear strength envelope / Mohr-Coulomb failure criterion / limit equilibrium / critical slip surface / minimum factor of safety / three-dimensional stability analysis / SOILS (Link to Publication Site) ● Publication site (DOI): 10.1139/t02-111 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1572824501584088064 ● Search Scopus @ Elsevier (DOI): 10.1139/t02-111 (DOI: 10.1139/t02-111, CiNii: 1572824501584088064)
46.	Khan Ahmed Younus, Takuo Yamagami and Jing-Cai Jiang : Stability evaluation of Rajshahi city protection embankment at Khojapur area, Rajshahi, Bangladesh, Technical Journal of River Research Institute, Vol.9, No.1, 57-64, 2002.
47.	Ahmed Younus Khan, Jing-Cai Jiang and Takuo Yamagami : Progressive failure analysis of slopes using non-vertical slices, Landslides, Vol.39, No.2 (150), 13-21, 2002. (Summary) A limit equilibrium method for progressive failure analysis of slopes is proposed based on a technique of non-vertical slices . The local factors of safety are calculated by defining variable factor of safety instead of conventional single value factor of safety along a shear surface. Reasonable simplifying assumptions about the inter-slice forces and the line of thrust are made to render the problem statically determinate. Strain softening, though in an approximate manner, is considered in the solution procedure. The analysis of a field case history indicates that the proposed method realistically represent the behaviour of progressive failure of an actual slope. Another case study revealed that in certain conditions a reasonable solution can be obtained using non -vertical slice approach, but the vertical slice analysis does not work well in obtaining reliable results . The proposed method, which can also handle vertical slice division, enables the user to choose more appropriate results either from vertical or from non-vertical slice analyses. (Keyword) slope stability / progressive failure / local factor of safety / limit equilibrium / non-vertical slice (Link to Publication Site) ● Publication site (DOI): 10.3313/jls1964.39.2_203 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679522628480 ● Search Scopus @ Elsevier (DOI): 10.3313/jls1964.39.2_203 (DOI: 10.3313/jls1964.39.2_203, CiNii: 1390282679522628480)
48.	Kenji Nishida, Takuo Yamagami and Jing-Cai Jiang : Numerical evaluation of the effects of drainage pipes by the 3D-finite element seepage analysis, Landslides, Vol.37, No.3, 1-9, 2000. (Summary) An evaluation method is presented for the effectiveness of horizontal/semi-horizontal drains to reduce ground-water pressures in soil slopes. A system of horizontal/semi-horizontal drains is commonly used to enhance the stability of slopes in which ground-water is the main cause of instability ; this is the usual case for almost all landslide slopes in Japan. Despite its quite frequent use, no design guidelines have been established. In this paper ground-water behavior is solved by the 3D-finite element saturated-unsaturated seepage analysis. One dimensional linear finite elements are incorporated into the 3D-finite element ground-water system to simulate the influence of the drains. An experiment was conducted on a model sandy ground in a metal tank in which perforated drainage pipes were installed. The observed results were compared with the numerical ones, and good agreements were obtained, indicating the usefulness of the proposed method. (Keyword) 有限要素法 / 模型実験 / 浸透 / 地すべり / 排水ボーリング (Link to Publication Site) ● Publication site (DOI): 10.3313/jls1964.37.3_1 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390282679522053248 ● Search Scopus @ Elsevier (DOI): 10.3313/jls1964.37.3_1 (DOI: 10.3313/jls1964.37.3_1, CiNii: 1390282679522053248)
49.	Yukimasa Kanda, Hidekuni Miwa, Masatoshi Okada, Takuo Yamagami and Jing-Cai Jiang : 地震時広域斜面崩壊予測システムの開発について, 地すべりと斜面崩壊に関するシンポジウム発表論文集, 161-166, 2000.
50.	Kazuyoshi Yokino, Takuo Yamagami and Jing-Cai Jiang : 斜面の変形を考慮した落石挙動の数値シミュレーションに関する研究, 地すべりと斜面崩壊に関するシンポジウム発表論文集, 145-150, 2000.
51.	Takuo Yamagami, Jing-Cai Jiang and Katsutoshi Ueno : A Limit Equilibrium Stability Analysis of Slopes with Stabilizing Piles, SLOPE STABILITY 2000, ASCE Geotechnical Special Publication, No.101, 343-354, 2000. (Summary) This paper presents a design method for slopes with a row of piles to enhance slope stability or to prevent slope failure. The basic idea of the method is to allow that two different slip surfaces can be assumed in upslope and downslope earth masses of the row of piles. Contrary to the conventional limit equilibrium procedure where a factor of safety is calculated for a given slip surface, in the present method forces acting on the stabilizing piles are estimated based on a given slip surface whose factor of safety is prescribed to ensure the slope stability. By assuming a slip surface in upper and lower earth masses respectively, the forces acting on the piles can be calculated from an existing limit equilibrium method with a prescribed value of the factor of safety. The Bishop method is employed, and a repeated trial proce-dure is used to find the most dangerous situation for the piles and the corresponding two critical slip surfaces in the upside and downside of the pile row. It may be understood that if the stabilizing piles are still sound under the most dangerous situation, then the slope will have, at least, the prescribed (target) factor of safety.
52.	Jing-Cai Jiang and Takuo Yamagami : 三次元斜面安定解析における主すべり方向の決定, 第44回地盤工学シンポジウム平成11年度発表論文集, 193-200, 1999.
53.	Takuo Yamagami, Masakazu Taki and Jing-Cai Jiang : 極限平衡法に基づく進行性破壊を考慮した斜面安定解析, 土と基礎, Vol.47, No.5, 9-12, 1999.
54.	Takuo Yamagami, Jing-Cai Jiang, Yasuhiro Ueta, Tie-Qun Feng, Naoyoshi Kurokawa and Masaaki Ezaki : Evaluation of Permanent Displacements Considering Variable Critical Slip Surfacs during an Earthquake, 地震時の斜面の不安定化メカニズムと設計法に関するシンポジウム発表論文集, 145-154, 1999.
55.	Takuo Yamagami and Jing-Cai Jiang : A Search for the Critical Slip Surface in Three-Dimensional Slope Stability Analysis, Soils and Foundations, Vol.37, No.3, 1-16, 1997. (Summary) 極限平衡法の枠組み内にある三次元安全率算定式は数多く提案されている．しかしこれらに基づく臨界すべり面の探索となると殆ど手が付けられていない．理由は任意形状の三次元試行すべり面の生成方法に無限の可能性が有るからである．この難題を解決すべく，本論文では主すべり方向に動的計画法を，また主すべりと直交方向に乱数発生法を導入することで，効率よく三次元臨界すべり面を探索する手が世界に先駆けて開発されている．
56.	Takuo Yamagami and Jing-Cai Jiang : 三次元臨界すべり面探索について, 地盤破壊の三次元的評価に関するシンポジウム発表論文集, 185-192, 1995.

Academic Paper (Unrefereed Paper):

1.	Yuuji Tsutiyama, Susumu Nakano, Jing-Cai Jiang and Masaki Entani : Construction of Rokkaku River basin flood prediction system using ANN, 令和5年度自然災害フォーラム論文集, 59-66, 2023. (Keyword) the Rokkaku river / flood prediction / neural network (Tokushima University Institutional Repository) ● Metadata: 118820 (Tokushima University Institutional Repository: 118820)
2.	Jing-Cai Jiang, Susumu Nakano, Junko Kanai and Seiichi kashimoto : The 10 July 2023 debris flow disaster in Takeno area of Tanushimarumachi, Kurume city and issues of sediment related disaster warning areas, 令和5年度自然災害フォーラム論文集, 43-48, 2023. (Keyword) debris flow disaster / Kurume city / sediment disaster warning area (Tokushima University Institutional Repository) ● Metadata: 118819 (Tokushima University Institutional Repository: 118819)
3.	Hideyuki Takano, Ryo Ogawa, Yasufumi Yuasa, Yukihiro Momota and Jing-Cai Jiang : Prediction of Tsunami and Related Damage to Dental Clinics Caused by the Nankai Trough Earthquake in the Tokushima Prefecture, 人と地域共創センター紀要, Vol.32, 1-6, 2023. (Tokushima University Institutional Repository) ● Metadata: 118157 (Tokushima University Institutional Repository: 118157)
4.	Jing-Cai Jiang, Yasunori Kozuki, Susumu Nakano and Seiichi Kashimoto : Slope and small river flood disasters caused by Typhoon No.15 of Sep. 2022 in Shizuoka Prefecture, 令和4年自然災害フォーラム論文集, 15-23, 2022.
5.	Atsushi Ikeda, Yasufumi Yuasa and Jing-Cai Jiang : Creation of an earthquake and tsunami evacuation countermeasure map in Wadajima-cho, Komatsushima City, 21世紀の南海地震と防災, Vol.16, 189-194, 2022.
6.	Jing-Cai Jiang, Susumu Nakano and Yasufumi Yuasa : The Huaihe River flood control in July 2020 using simultaneously eight large-scale retarding basins, 令和3年自然災害フォーラム論文集, 67-72, 2022.
7.	Jing-Cai Jiang, Susumu Nakano, Yasunori Kozuki and Tsunataka Furuya : Damage of the mud and debris flow around Izusan area in Atami city and evacuation information announcement, 令和3年自然災害フォーラム論文集, 89-94, 2022. (Tokushima University Institutional Repository) ● Metadata: 117046 (Tokushima University Institutional Repository: 117046)
8.	Susumu Nakano, Jing-Cai Jiang and Yasunori Kozuki : Consideration from the rainwater runoff process regarding the Atami debris flow disaster in July 2021, --- Risk of land modification near the watershed ---, 令和3年自然災害フォーラム論文集, 81-88, 2022. (Tokushima University Institutional Repository) ● Metadata: 117043 (Tokushima University Institutional Repository: 117043)
9.	圓谷政貴, Susumu Nakano, Jing-Cai Jiang and Yuji Tsuchiyama : Inundation damage around the Rokkaku River due to heavy rain in August 2021, 令和3年自然災害フォーラム論文集, 73-80, 2022. (Tokushima University Institutional Repository) ● Metadata: 117044 (Tokushima University Institutional Repository: 117044)
10.	Jing-Cai Jiang, Susumu Nakano, Yasufumi Yuasa and 徐春萌 : Numerical analysis of the inundating form the Huaihe River into the Mengwa flood storage area and the protection of life and property of the people in the region, 令和2年自然災害フォーラム論文集, 29-34, 2020.
11.	圓谷政貴, Susumu Nakano, Jing-Cai Jiang and 長谷川真之 : Inundation damage around the Rokkaku River due to heavy rain in August 2019, 令和2年自然災害フォーラム論文集, 9-14, 2020.
12.	Susumu Nakano, Jing-Cai Jiang, Hiroki Ogawa, Junko Kanai, Masahiko Tokunaga, Kosuke Hirose, 圓谷政貴 and 長谷川真之 : Flood damage in the Kuma River basin due to heavy rain in July 2020, 令和2年自然災害フォーラム論文集, 1-8, 2020.
13.	Jing-Cai Jiang and Susumu Nakano : Disaster reduction issues of small earthfill dams from the past examples of failure due to earthquake or/and heavy rainfall, 21世紀の南海地震と防災, Vol.14, 37-42, 2019.
14.	Susumu Nakano, Junko Kanai, Takao TAMURA, Hiroki Ogawa, Jing-Cai Jiang, Akihiro Murata, Taku Mikami and Masaki Entani : Flood damage to the Chikuma and Oppe rivers due to the heavy rain event by Typhoon Hagibis in October 2019 (Bulletin version), 令和元年自然災害フォーラム論文集, 61-66, 2019.
15.	Susumu Nakano, Junko Kanai, Jing-Cai Jiang, Masahiko Tokunaga and Shunpei Katoh : Investigation of flood damage in Hongo town, Mihara city due to the heavy rain in July 2018, 令和元年自然災害フォーラム論文集, 29-34, 2019.
16.	鈴江和好, Susumu Nakano, Jing-Cai Jiang, 井上惣介 and 根来慎太郎 : 九州北部豪雨における建設業の応急対応に関するヒアリング調査, 平成30年自然災害フォーラム論文集, 29-36, 2018.
17.	Yuki Tanaka, Yasufumi Yuasa, Jing-Cai Jiang and Susumu Nakano : Consideration on municipal disaster response in the 2016 Kumamoto Earthquake, Nankai Earthquake and Preventive Efforts, Vol.12, 79-86, 2018. (Keyword) 自治体 / BCP / 災害対応 / 2016年熊本地震
18.	Jing-Cai Jiang and Susumu Nakano : The relationship between house damages and ground conditions during the 2016 Kumamoto Earthquake in Mashiki Town, Kumamoto, Japan, 21世紀の南海地震と防災, Vol.12, 43-48, 2018. (Keyword) 2016年熊本地震 / 住宅被害 / 地盤
19.	Jing-Cai Jiang and Susumu Nakano : 2016年熊本地震による益城町の地盤災害, 平成29年度地盤と防災・環境に関するシンポジウム講演概要・技術論文集, 54-59, 2017.
20.	Jing-Cai Jiang, 李傑龍 and Susumu Nakano : 過去の南海地震による四国太平洋沿岸地盤変動再現の試み, 平成28年度地盤と防災・環境に関するシンポジウム講演概要・技術論文集, 56-61, 2016.
21.	Atsushi Mikami, Susumu Nakano and Jing-Cai Jiang : 2014 Northern-Nagano Earthquake reconnaissance report, 21世紀の南海地震と防災, Vol.9, 51-64, 2015.
22.	Jing-Cai Jiang : 地震時盛土斜面の不安定性評価にまつわる諸問題:-安定解析理論;破壊斜面の逆算;鉛直地震動の影響，など-, らんどすらいど(日本地すべり学会関西支部), 24-86, 2013. (Keyword) earthquake / 盛土斜面 / 安定解析 / 永久変位 / 逆算
23.	Jing-Cai Jiang and Susumu Nakano : 鉛直地震動が地震時主働土圧に及ぼす影響について, 第33回地震工学研究発表会(CD-ROM), 2013. (Keyword) earthquake / 鉛直地震動 / 主働土圧 / 擁壁
24.	Jing-Cai Jiang and Guangli Xu : 中国三峡ダム貯水池地区で発生した大規模湛水地すべりの現地調査, 平成25年自然災害フォーラム論文集, 11-16, 2013.
25.	Ken-ichi Nishiyama, Jing-Cai Jiang and 岡田憲治 : 2011年台風12号・15号豪雨により徳島県で発生した斜面崩壊, 平成24年自然災害フォーラム論文集, 75-82, 2012.
26.	Jing-Cai Jiang, Susumu Nakano and Kazuyoshi Takai : Geotechnical investigation and design of slope failure repair works along the Akamatsu-Yuki highway in Tokushima, Japan, 平成23年自然災害フォーラム論文集, 21-26, 2011.
27.	Jing-Cai Jiang and 王功輝 : 2008年5月12日四川大地震災害の調査報告―斜面崩壊・地すべり・ダム被害を中心として―, 第4回地盤と環境に関するシンポジウム講演概要・技術論文集, 11-21, 2009.

Review, Commentary:

1.	大西一賢 and Jing-Cai Jiang : 「進行性破壊を考慮した新しい斜面安定解析法」への討論に対する回答, Journal of the Japan Landslide Society, Vol.53, No.4, 29-35, Jul. 2016.
2.	Jing-Cai Jiang and Takuo Yamagami : Discussion of "A new method for estimating the shear strength parameters at the critical slip surface" by T.F. Fathani and H. Nakamura, Vol. 42, No. 2 (166), Jul. 2005, pp. 57-66[ Reply], Journal of the Japan Landslide Society, Vol.44, No.4, 50-52, Nov. 2007. (Link to Publication Site) ● Publication site (DOI): 10.3313/jls.44.254 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001205201282688 ● Search Scopus @ Elsevier (DOI): 10.3313/jls.44.254 (DOI: 10.3313/jls.44.254, CiNii: 1390001205201282688)
3.	Jing-Cai Jiang, Atsushi Mikami, Takeshi Okabe, Susumu Nakano and Masato Fujita : 2007年能登半島地震災害調査―建物被害・道路法面崩壊を中心に―, 南海地震研究第3巻, Vol.3, 25-34, Mar. 2007.
4.	Jing-Cai Jiang and Takuo Yamagami : Three-dimensional limit equilibrium slope stability analysis: simplified methods vs rigorous methods, Landslides, Vol.42, No.2, 27-33, Jul. 2005. (Summary) Existing three-dimensional (3D) slope analysis methods based on limit equilibrium are comprehensively reviewed, and studies which have been conducted to evaluate the computational accuracy of these 3D methods are briefly summarized. The end effect (i.e. ratio of 3D factor of safety to the 2D value) estimated using different methods of columns is also examined. It may be concluded that simplified analyses based on an extension of the ordinary method of slices (e.g. Hovland method) are not adequate for 3D slope stability computations because they assume zero intercolumn forces, do not satisfy equilibrium conditions, and more importantly, predict overconservative results leading to a partial or complete neglect of the end effect that should be evaluated properly by a 3D analysis. Consequently, the use of a rigorous method of columns that satisfies both force and moment equilibrium is strongly recommended for a realistic 3D evaluation of the slope stability. (Keyword) 極限平衡法 / 三次元安定解析 / 厳密コラム分割法 / すべり方向 / 三次元効果 / Hovland法
5.	Jing-Cai Jiang and Takuo Yamagami : Discussion of "generalized method for three-dimensional slope stability analysis" by Ching-Chuan Huang, Cheng-Chen Tsai, and Yu-Hong Chen, Journal of Geotechnical and Geoenvironmental Engineering, Vol.130, No.2, 227-228, Feb. 2004. (Link to Publication Site) ● Publication site (DOI): 10.1061/(ASCE)1090-0241(2004)130:2(227) (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1570291224100224128 ● Summary page in Scopus @ Elsevier: 2-s2.0-85001560456 (DOI: 10.1061/(ASCE)1090-0241(2004)130:2(227), CiNii: 1570291224100224128, Elsevier: Scopus)
6.	Kenji Nishida, Takuo Yamagami and Jing-Cai Jiang : 地すべり解析における有限要素法の利用(第5回) FEMによる地すべり解析の基礎理論, Landslides, Vol.40, No.4, 86-89, Nov. 2003.

Proceeding of International Conference:

1.	Tsunataka Furuya and Jing-Cai Jiang : Estimation of slip surfaces using the results of groundwater logging in fracture zone landslides, 253-261, Sep. 2023. (Link to Publication Site) ● Publication site (DOI): 10.1007/978-981-99-9061-0_19 (Link to Search Site for Scientific Articles) ● Summary page in Scopus @ Elsevier: 2-s2.0-85203604389 (DOI: 10.1007/978-981-99-9061-0_19, Elsevier: Scopus)
2.	J. L. Li, Jing-Cai Jiang and Susumu Nakano : Estimation of co-seismic displacements induced by the past Nankai earthquakes, Proc. JAEE Inter. Symp. on Earthquake Engineering, (2-28)1-10, Nov. 2015.
3.	Tsunataka Furuya and Jing-Cai Jiang : Observation, measurement and analysis of oriented borehole core for locating slip surfaces in fracture zone landslides in Shikoku, Japan, CD-ROM Proceedings of the Fourth International Conference on Geotechnique, Construction Materials and Environment, Vol.1, 217-224, Nov. 2014.
4.	Junko Kanai, Susumu Nakano and Jing-Cai Jiang : DAMAGE AND EMERGENCY RESPONSE OF COMMERCIAL ESTABLISHMENTS DURING THE AWAJI ISLAND EARTHQUAKE, 5th Asia Conference on Earthquake Engineering, 89, Oct. 2014.
5.	Kazumasa Onishi and Jing-Cai Jiang : A new stability analysis method of slopes considering progressive failure, Proceedings of the 14th International Conference of the International Association for Computer Methods and Recent Advances in Geomechanics, Vol.1, 181-186, Kyoto, Sep. 2014.
6.	Ang Liu, Mingrong Shen and Jing-Cai Jiang : Experimental study on relaxation properties of discontinuity, 5th KGS -JGS Geotechnical Engineering Workshop, 81-86, Oct. 2013. (Keyword) rock mechanics / structural surface / stress relaxation / Burgers model
7.	Jing-Cai Jiang and Susumu Nakano : A comparison of predicted and observed slope failures due to the 2004 Niigata-Ken Chuetsu Earthquake, Proceedings of the International Symposium on Earthquake-Induced Landslides, 791-797, Nov. 2012.
8.	Kai Zhang, Jing-Cai Jiang and Qing Yang : Numerical simulation of 2D crack growth with frictional contact in brittle materials, Proceedings of the First International Conference on Geotechnique, Construction Materials and Environment, Vol.Vol.1, 187-190, Tsu, Nov. 2011.
9.	Kai Zhang, Qing YAng and Jing-Cai Jiang : Experimental and numerical research on crack propagation in rock under uniaxial compression, Proceedings of the 12th ISRM International Congress on Rock Mechanics, 396-399, Beijing, Oct. 2011.
10.	Jing-Cai Jiang, Takuo Yamagami and Qing Yang : Seismic instability assessment of rock slopes in a large area based on planar sliding mode, Proceedings of the 12th ISRM International Congress on Rock Mechanics, 711-716, Beijing, Oct. 2011.
11.	Tsunataka Furuya and Jing-Cai Jiang : Strength parameters back analyzed from a failed cut slope, Proceedings of the 4th Sino-Japan Symposium on Geotechnical Engineering, 162-167, Apr. 2010.
12.	Kazumasa Onishi, Jing-Cai Jiang, Takuo Yamagami and Satoru Yamabe : Progressive failure analysis and design of nail-reinforced slopes, Proceedings of the 4th Sino-Japan Symposium on Geotechnical Engineering, 325-330, Apr. 2010.
13.	Jing-Cai Jiang : Three-dimensional slope stability and back analysis of slope failures, Proceedings of International Symposium on Environmental Science and Technology, 41-48, Feb. 2010.
14.	Jing-Cai Jiang and Susumu Nakano : Post-earthquake investigation on large-scale highway embankment failures during the recent strong earthquakes in Japan, Proceedings of International Conference on Earthquake Engineering -- the 1st Anniversary of Wenchuan Earthquake --,, 662-665, May 2009. (Keyword) Earthquake / road embankment / failure
15.	Jing-Cai Jiang and Takuo Yamagami : Strength parameters from back analysis of slips in two-layer slopes, Proceedings of the 10th International Symposium on Landslides and Engineered Slopes, 747-753, Xi'an, Jun. 2008. (Summary) For a two-layer slope with a known geometry, unit weight and pore water pressure distribution, the position of critical slip surface from a limit equilibrium stability analysis will remain unique for a given set of (Ramda1= c1/tanPhi1, Ramda2= c2/tanPhi2, and Ramda3 =c1 /c2) values regardless of the magnitude of individual strength parameters (c1, Phi1, c2, and Phi2) of two soil layers. This theoretical relationship between c and tanPhi and the critical slip surface is used to develop a back analysis method by which the shear strengths of soils can be estimated from a known position of the failure surface observed in the field two-layer slope. In this method, an objective function is first defined to describe the difference between the actual failure surface and theoretical critical slip surface, and then a nonlinear programming technique is used to minimize the difference (i.e. the objective function) so as to determine an optimal solution of (Ramda1, Ramda2, Ramda3) that corresponds to the failure surface. When the magnitude of (Ramda1, Ramda2, Ramda3 ) are obtained, a unique set of (c1, Phi1, c2, Phi2) values can easily be computed by considering the fact that the factor of safety is equal to unity. Results back-calculated from a failure surface involved in a two-layer slope are presented to demonstrate the effectiveness of the proposed back analysis method. (Keyword) Slope / Failure / Strength parameters / Back analysis / Two layer soils / Limit equilibrium
16.	Jing-Cai Jiang, Takuo Yamagami and Satoru Yamabe : Simplified design method for reinforced slopes considering progressive failure, Proceedings of the 5th International Symposium on Earth Reinforcement, 551-557, Fukuoka, Nov. 2007. (Summary) A limit equilibrium-based design method for reinforced slopes considering progressive failure is developed. A local safety factor is first defined at the base of each slice so as to describe local failure along a slip surface. An incremental approach is constructed to solve the equations and an empirical interslice force function is introduced to enhance the efficiency and robustness of the solution procedure. Then, a new design scheme for reinforced slopes is proposed. In this scheme, an optimization technique is contrived to determine tensile resistances of reinforcement elements that will be required to provide an adequate factor of safety of reinforced zones. The proposed procedure can be used to determine reasonable layout of reinforcements and required tensile strength of reinforcing material. Finally, results obtained for an example are presented and discussed to provide a guideline for practical design of reinforced slopes using the proposed method.
17.	Jing-Cai Jiang and Takuo Yamagami : Failure patterns of the ground surrounding rigid piles in sand subjected to lateral soil movements, Proceedings of the 3rd Sino-Japan Geotechnical Symposium, 213-222, Chongqing, Nov. 2007. (Summary) Laboratory model tests in sand were conducted to investigate three-dimensional failure patterns of the ground surrounding a single rigid pile and piles in a row subjected to lateral soil movements (passive piles). An apparatus for the tests was designed and manufactured in which an automatic loading system under displacement control was incorporated. To help observe and identify the slip surfaces, thin layers (5mm) of colored and uncolored Toyoura sand were alternately laid up to prepare a uniform model ground with an almost same soil density for all the tests. By cutting the model ground after the tests, the geometry of the failure surfaces developed in sand was observed and measured both in longitudinal/cross sections and in horizontal sections using manual measurement techniques and a simple image processing analysis. Experimental results are reported to show three-dimensional failure patterns of the sand ground around single piles and piles in a row subjected to lateral soil movements. (Keyword) Failure / Rigid piles / Lateral soil movements / Model tests / Ultimate lateral load / Three dimensions
18.	Jing-Cai Jiang and Takuo Yamagami : Conventional and modified design methods for landslide stabilizing piles: a comparison of results, Proceedings of the 10th Australia New Zealand Conference on Geomechanics, 103-110, Brisbane, Oct. 2007. (Summary) A limit equilibrium-based procedure for design of landslide stabilizing piles is often used in practice in Japan. It usually involves three main steps: i) determining the strength parameters from back analysis of a known failure surface; ii) evaluating the lateral resistance which should be provided by piles to increase the factor of safety to the desired value; and iii) selecting the type/number of piles and the most suitable location of these piles within the slope. Each one of the above elements has been studied individually in the literature. However, the interrelations between these elements have not been sufficiently emphasized. This paper is presented to examine the interrelation between the first two steps (i.e. steps i) and ii)), describing defects of the conventional design procedure used in Japan, restating a modified approach to overcome some of these defects, and more importantly, performing a numerical comparison of the results obtained using these two different procedures. Comparisons are made for a typical landslide slope. The findings are summarized to support a recommendation of the use of the modified method for a reliable design of pile-reinforced slopes. (Keyword) Slope / Stability / Stabilizing piles / Factor of safety / Strength parameters / Back analysis / Limit equilibrium method
19.	Jing-Cai Jiang and Takuo Yamagami : Anchor forces needed to increase slope stability: A comparison of conventional and modified procedures, Proceedings of An International Conference on Geotechnical Engineering (GEO-SINGAPORE 2006), 103-110, Singapore, Dec. 2006. (Summary) Limit equilibrium-based design of anchors for stabilizing landslide slopes includes three main steps: determination of strength parameters from the back analysis of a known failure surface, evaluation of anchor forces needed to increase the factor of safety to the desired value, and selection of the type/number of anchors and the most suitable location/orientation of these anchors within the slope. Each one of the above elements has been studied individually. However, the interrelations among these elements have not been sufficiently emphasized. The consideration of these interrelations may provide an integrated solution for the design of landslide stabilizing anchors. This paper is presented to investigate the interrelations between the first two steps; describing deficiencies of the conventional method used in practice in Japan, representing a modified approach to overcome these deficiencies, and more importantly, conducting a numerical comparison of the results predicted using these two different procedures. Comparisons are made for two landslide slopes: one with a slip circle and the other with a noncircular failure surface. The findings are obtained to support a recommendation of the use of the modified procedure for a reliable design of landslide slopes stabilized with anchors. (Keyword) anchors / anchor forces / slope failure / stability analysis / strength parameters / back analysis / factor of safety / limit equilibrium method
20.	Jing-Cai Jiang and Takuo Yamagami : Regional seismic slope instability assessment using newmark's method and geographical information system, Proceedings of the 4th Asian Joint Symposium on Geo-Environmental Engineering, 247-252, Dalian, Nov. 2006. (Summary) A GIS-based approach for regional assessment of seismic landslide displacements is developed. In the proposed approach, a rigorous Newmark's analysis extended to a circular failure surface is integrated with a GIS to predict seismically induced slope deformation on the basis of rotation. For utilizing more precise digital elevation model (DEM) with small size grid cells, a new technique is developed to generate slope models and to extract the most critical slope section for each cell involved in a DEM coverage. This allows a more reliable assessment of earthquake-triggered landslide hazards on a regional scale. Possible inaccuracies and potential problems associated with assuming an infinite slope model in existing GIS-based methods can be eliminated by using the proposed approach. (Keyword) Earthquake-induced Landslides / Newmark's Displacement Analysis / Geographic Information Systems (GIS) / Digital Elevation Model (DEM) / Slope Instability / Circular Failure Surface
21.	Jing-Cai Jiang and Takuo Yamagami : Three-dimensional limit equilibrium slope stability analysis procedures, Proceedings of the 2nd World Forum of Chinese Scholars in Geotechnical Engineering, 51-57, Nanjing, Aug. 2005. (Summary) Existing three-dimensional (3D) limit equilibrium slope stability analysis procedures based on the method of columns are comprehensively reviewed, and studies which have been conducted to evaluate the computational accuracy of these 3D methods are summarized and investigated. It may be concluded that 1) the 3D factor of safety will be greater than the two-dimensional (2D) value for a suitable comparison because the end effects tend to increase stability; 2) simplified procedures in which only a part or none of the static equilibrium conditions is satisfied are not suitable for 3D slope stability computations as they involve many assumptions that are virtually difficult to justify. Indeed, these methods may predict an unreasonably low factor of safety leading to underestimate of end effects and thus spoil the significance of a 3D analysis. The use of a rigorous method of columns that satisfies both force and moment equilibrium is therefore recommended so as to perform a realistic evaluation of the stability of slopes.
22.	Jing-Cai Jiang, Takuo Yamagami and Nguyen B. V. : Seismic displacements of slopes based on variable critical slip surfaces, Proceedings of the 15th Southeast Asian Geotechnical Conference, Vol.1, 923-928, Bangkok, Nov. 2004. (Summary) Newmark sliding block procedure commonly used for seismic slope stability analyses involves three steps: definition of yield acceleration, determination of earthquake-induced acceleration and computation of permanent deformations. The original Newmark model, however, defines yield acceleration and the associated critical slip surface by a pseudo-static analysis and neglects the dynamic response of a potential sliding mass. Some sudies have been performed to consider that response but determination of yield acceleration is not improved. In this paper, a modified Newmark analysis is presented in which both the yield acceleration (and the associated slip surface along which permanent displacement is estimated) and the time-history of earthquake-induced acceleration are determined based on finite element (FE) dynamic response analyses. Effect of variable critical slip surfaces during an earthquake on predicted permanent displacements is also considered. Results of analyses for a heterogeneous slope subjected to earthquakes indicate that the neglect of effects of variable critical slip surfaces may result in a non-conservative evaluation of the seismic stability of slopes.
23.	Yukimasa Kanda, Takuo Yamagami, Jing-Cai Jiang and Kota Sumoto : A limit equilibrium stability analysis of slopes with two stabilizing walls, Proceedings of the 3rd International Conference on Landslides, Slope Stability and The Safety of Infra-Structures, 301-308, Singapore, Jul. 2002. (Summary) A limit equilibrium stability analysis of slopes reinforced with two stabilizing walls (e.g. sheet pile walls) is presented. The basic idea of the proposed method is to allow that three different slip surfaces can be assumed in upslope, midslope and downslope earth masses separated by the two walls. Contrary to the conventional limit equilibrium procedure where a factor of safety is calculated for a given slip surface, in the proposed method forces acting on the stabilizing walls are estimated by specifying a target factor of safety to ensure the stability of the slope. By assuming a slip surface in each of the three earth masses respectively, the forces acting on the walls can be calculated from an existing limit equilibrium method for the prescribed value of the factor of safety. In this paper, the Bishop method is employed, and a repeated trial procedure is used to find the most dangerous state for the walls and the corresponding set of three critical slip surfaces. An illustrative example is presented to demonstrate the effectiveness of the proposed method.
24.	Takuo Yamagami, Jing-Cai Jiang and Satoru Yamabe : LEM-based progressive failure analysis and its application to nail-reinforced slopes, Proceedings of the 3rd International Conference on Landslides, Slope Stability and The Safety of Infra-Structures, 83-96, Singapore, Jul. 2002. (Summary) Iterative and incremental procedures are presented for the stability analysis of slopes considering progressive failure, based on the limit equilibrium concept. A local factor of safety is defined at the base of each slice to represent the progressive, local failure along a slip surface. For nail reinforced slopes an optimization approach is contrived to determine tensile resistances of reinforcement elements at an inception of failure of reinforced zones. This approach can be used for practical design of reinforced slopes to produce a reasonable arrangement of reinforcements and to determine required available tensile strengths of reinforcing materials. Finally, the method is applied to an example to demonstrate its effectiveness, and the results obtained are discussed to provide guidelines for practical design of reinforced slopes using the method.
25.	Jing-Cai Jiang and Takuo Yamagami : Back analysis of strength parameters from slope failure with a weak layer, Proceedings of the 3rd International Conference on Landslides, Slope Stability and The Safety of Infra-Structures, 275-282, Singapore, Jul. 2002. (Summary) The slip surface within a failed slope often involves a pre-existing interface or a weak layer. In such a case, back analysis is extremely difficult to obtain Mohr-Coulomb shear strength parameters required for remedial work design because the soil along the slip surface is clearly heterogeneous. An artificial neural network model is developed in this paper to back calculate strength parameters along the slip surface controlled by a weak layer. Two essential conditions that take full advantage of the information provided by a failed slope are used to produce reasonable training data sets for neural network training and testing. The neural network model was first applied to determine strength parameters associated with the hypothetical slope failure along a weak layer. Some laboratory failure tests on small scale model slopes were also carried out to verify the performance of the proposed method.
26.	Takuo Yamagami, Jing-Cai Jiang and Kazuyoshi Yokino : An identification of DEM parameters for rockfall analysis, Proceedings of the 14th Southeast Asian Geotechnical Conference, Vol.1, 953-958, Hong Kong, Dec. 2001. (Summary) Use of Distinct Element Method (DEM) provides a powerful tool for dealing with rockfall problems, although it involves a great difficulty of how to determine input parameters (Kn, ηn, Ks and ηs) required for the analysis. A methodology is presented in which four DEM parameters are identified from back analysis of rockfall trajectories observed in field rockfall tests or traced by site investigation of natural rockfall occurrences on a slope. The proposed method, though in an indirect manner, can evaluate the parameters taking into account the effects of slope deformation and/or collision between falling rock and vegetation on the slope. A number of laboratory rockfall tests on small model slopes were carried out to verify the proposed approach. As a result, it is concluded that the four parameters (Kn, ηn, Ks and ηs) can be reasonably determined from back analysis of the trajectories of falling rocks.
27.	Takuo Yamagami, Jing-Cai Jiang, Satoru Yamabe and Masakazu Taki : Stability analysis of reinforced slopes considering progressive failure, Proceedings of the International Symposium on Earth Reinforcement, Vol.1, 749-754, Fukuoka, Nov. 2001. (Summary) A new procedure is presented for the stability analysis of reinforced slopes considering progressive failure based on the limit equilibrium concept. A local factor of safety is defined at the base of each slice to represent the progressive, local failure along a slip surface. An optimization approach is contrived to determine tensile resistances of reinforcement elements at an inception of failure of reinforced zones. This approach can be used for practical design of reinforced slopes to produce reasonable arrangement of reinforcements and to determine required available tensile strengths of reinforcing materials. Finally, the method is applied to a simple example to demonstrate its effectiveness, and the results obtained are discussed to provide guidelines for practical design of reinforced slopes using the method.
28.	Jing-Cai Jiang, Takuo Yamagami and R. Baker : Search for 2-D and 3-D Critical Slip Surfaces based on a Nonlinear Strength Envelope, CD-ROM Proceedings of the International Conference on Geotechnical & Geological Engineering (GeoEng2000), Melbourne, Nov. 2000. (Summary) Effects of nonlinearly of strength envelopes on stability analysis of 2-D and 3-D slopes are investigated. The nonlinear envelope is expressed as a power law with two unspecified parameters. Combining the non-linear strength law with Janbu's method and a minimization process based on dynamic programming makes it possible to determine the minimum factor of safety and critical slip surface for 2-D slopes. The factor of safety equation of a 3-D simplified Janbu method is derived in terms of the same nonlinear strength envelope. In the 3-D case the search procedure is based on dynamic programming and random number generation. Results of some example problems show that a linear approximation of the nonlinear strength envelope leads, under certain conditions, to a significant overestimation of safety factors for both 2-D and 3-D slopes.
29.	Takuo Yamagami, Jing-Cai Jiang, Tie-Qun Feng and Katsutoshi Ueno : Evaluation of Seismic Permanent Displacements Based on Variable Critical Slip Surfaces, CD-ROM Proceedings of International Conference on Geotechnical & Geological Engineering (GeoEng2000), Melbourne, Nov. 2000. (Summary) The conventional Newmark model is widely used for the estimation of permanent deformations of slopes during earthquakes. However, the calculation procedure for permanent displacements in the Newmark model is based on a distinct and fixed slip surface. In other words, the Newmark model neglects the effects of variable critical slip surfaces during an earthquake on evaluation of permanent displacements. By combining a finite element seismic analysis and dynamic programming, this paper first indicates that the critical slip surfaces and associated minimum factors of safety of a slope during an earthquake vary with time over a wide range. Then, a modified Newmark procedure which considers the effects of variable critical slip surfaces is presented to evaluate seismic displacements of slopes. Its application to a homogeneous slope subjected to two different types of motions shows that the neglect of variation of critical slip surfaces may result in an incorrect estimation of permanent displacement of slopes during an earthquake.
30.	Takuo Yamagami, Jing-Cai Jiang, Katsutoshi Ueno and Shinsuke Sakai : Back Analysis for Determination of Sedimentation and Consolidation Properties, Proceedings of the International Symposium on Coastal Geotechnical Engineering in Practice, Vol.1, 217-222, Yokohama, Sep. 2000. (Summary) A back analysis method is presented to determine the sedimentation and consolidation properties (i.e. void ratio e - effective stress σ' relationship and void ratio e - permeability k relationship) of very soft soils which are required for solving joint sedimentation and consolidation equations. The back analysis is based on measured layer thickness or surface settlement-time response of the clay-water system from a simple settling test in a small scale tube. The parameters obtained from back analysis are used to predict settlement of centrifuge model grounds consisting of marine clay. The good agreement between the results predicted from the back analysis and centrifuge models indicates that the proposed method can provide a useful tool to identify the e-σ' and e-k relationships and to simulate the behavior of very soft soils in actual reclaimed ground with dredged materials.
31.	Jing-Cai Jiang, Takuo Yamagami and Yasuhiro Ueta : Back Analysis of Unsaturated Strength Parameters from a Noncircular Slope Failure, Proceedings of the 8th International Symposium on Landslides, Vol.2, 789-794, Cardiff, Jun. 2000. (Summary) An analytic method is presented to determine unsaturated shear strength from back calcula-tions of a noncircular slope failure. This method is based on two essential conditions that take full advantage of the information provided by a failed surface in a unsaturated slope. The Fredlund failure criterion, with three parameters (c', φ', φb), is first incorporated with the Janbu method for formulation. Then, a back calculation procedure for determining three unsaturated strength parameters is described by combining the above two conditions with the Janbu factor of safety equation. The procedure is applied to a hypothetical slope failure and the results show that a unique and reliable solution of (c', φ', φb) can be back calculated quickly.
32.	Jing-Cai Jiang, Takuo Yamagami and Katsutoshi Ueno : Three-Dimensional Back Analysis of Unsaturated Soil Strength Parameters, Proceedings of the Asian Conference on Unsaturated Soils, 789-794, Singapore, May 2000. (Summary) A three-dimensional (3-D) analysis method is proposed to back-calculate unsaturated soil shear strength from a slope failure. The Fredlund strength criterion, with three parameters (c', φ', φb), is incorporated with a 3-D simplified Janbu method for formulation of the factor of safety. The 3-D back analysis procedure for determination of the three strength parameters is described by combining the 3-D Janbu factor of safety equation with two essential conditions that take full advantage of the information of a failure surface in a unsaturated slope. Application of the procedure to a hypothetical 3-D slope failure indicates that a unique and reliable solution of (c', φ', φb) can be obtained. Finally, a comparison of 2-D and 3-D back analyses is made to show the importance of performing a 3-D analysis in back calculating the unsaturated shear strength.
33.	Takuo Yamagami, Satoru Yamabe, Jing-Cai Jiang and Ahmed Younus Khan : A Promising Approach for Progressive Failure Analysis of Reinforced Slopes, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.2, 1043-1048, Matsuyama, Nov. 1999. (Summary) An attempt is made to develop a design procedure for the stability of reinforced slopes considering progressive failure based on the limit equilibrium concept. A local factor of safety is defined at the base of each slice to represent the progressive, local failure along a slip surface. The reinforcement force is essentially unknown, but it is assumed to be known and is prescribed for purposes of the analysis. In this sense the method discussed here is unfinished. A simple application example however has shown that it is feasible to establish a stability analysis method for reinforced slopes taking into account progressive failure within the framework of the limit equilibrium approach.
34.	Takuo Yamagami, Jing-Cai Jiang and Kenji Nishida : Numerical Evaluation of the Effects of Drainage Pipes, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.1, 545-550, Matsuyama, Nov. 1999. (Summary) An evaluation method is presented for the effectiveness of horizontal/semi-horizontal drains to reduce ground-water pressures in soil slopes. A system of horizontal/semi-horizontal drains is commonly used to enhance the stability of slopes in which ground-water is the main cause of instability, this is the usual case for almost all landslide slopes in Japan. Despite its quite frequent use, no design guidelines have been established. In this paper ground-water behavior is solved by the 3D-finite element saturated-unsaturated seepage analysis. One dimensional linear finite elements are incorporated into the 3D-finite element ground-water system to simulate the influence of the drains. An experiment was conducted on a model sandy ground in a metal tank in which perforated drainage pipes were installed. The observed results were compared with the numerical ones, and good agreements were obtained, indicating the usefulness of the proposed method.
35.	Tie-Qun Feng, Takuo Yamagami and Jing-Cai Jiang : A FE Analysis of Anisotropic Soil Slopes and Back Analysis for its Parameters, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.1, 317-322, Matsuyama, Nov. 1999. (Summary) A finite element analysis has been implemented by employing an elasto-plastic model for anisotropic soils proposed by Nova (1986). Owing to the complexities of the anisotropy, the number of model parameters increases in comparison with that of isotropic soils. Also, these parameters are quite difficult to be determined by laboratory tests, because it is hardly possible to acquire the specimens of high quality for representing the anisotropy of geotechnical materials. At present, there are few acceptable methods proposed for the determination of the parameters of anisotropic models. In the present paper, an attempt has been made for the determination of the model parameters by combining FEA with an optimization method. The proposed procedure is illustrated through a cutting in an orthotropic slope. The results indicated that the present procedure is applicable for transversely isotropic soils.
36.	Tie-Qun Feng, Takuo Yamagami and Jing-Cai Jiang : A Back Analysis of MC-DP Model Parameters Based on FEM and NLSSQP Method, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.1, 311-316, Matsuyama, Nov. 1999. (Summary) This paper presents a possible method to back analyze the parameters of MC-DP model by incorporating FEM into a minimization method NLSSQP. The NLSSQP method is capable of solving Nonlinear Least Squares problems with constrained conditions by means of Sequential Quadric Programming method. The model parameters are estimated by minimizing a norm of the difference between observed and calculated values at specified observation points. Although only MC-DP model is investigated in this paper, there is no necessity to prescribe the constitutive model; any model can be used as a subroutine program. The proposed method is applied to an excavation performed in a homogeneous and isotropic slope. The results indicate that the proposed method can provide convergent and accurate solutions.
37.	Jing-Cai Jiang, Takuo Yamagami and Yasuhiro Ueta : Back Analysis of Unsaturated Shear Strength from a Circular Slope Failure, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.1, 305-310, Matsuyama, Nov. 1999. (Summary) A back analysis method is described to determine three unsaturated strength parameters (c', φ', φb) in Fredlund's failure criterion. This method is based on two essential conditions which take full advantage of the information provided by a slope failure in a unsaturated zone. A back calculation procedure is constructed by combining these two conditions with the Bishop factor of safety equation with Fredlund's failure criterion. Application of the proposed method to a hypothetical slope failure illustrates that a unique and reliable solution of (c', φ', φb) can be back calculated quickly. The back analysis method proposed has the potential to determine the magnitude of (c', φ', φb) from an actual slope failure as long as the suction distribution along the slip surface at failure is known.
38.	Takuo Yamagami, Jing-Cai Jiang and Ahmed Younus Khan : Progressive Failure Analysis Based on a Method of Non-Vertical Slices, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.1, 299-304, Matsuyama, Nov. 1999. (Summary) An approach of progressive failure analysis of slope stability is proposed based on a method of non-vertical slices within the limit equilibrium framework. Variable factor of safety is defined along a shear surface and the local safety factors are calculated. Simplifying assumptions about the inter-slice forces and their points of action made this method determinate. Force and moment equilibrium equations are derived from the equilibrium conditions and the Mohr-Coulomb failure envelope. The softening behaviors of the soil materials are also included in the method. To evaluate the ultimate stability of a slope an overall factor of safety is intro-duced. The method is presented with two case studies.
39.	Takuo Yamagami, Jing-Cai Jiang, Masakazu Taki and Satoshi Yamabe : Progressive Failure Analysis of Slopes Based on a LEM, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Vol.1, 293-298, Matsuyama, Nov. 1999. (Summary) A new method for progressive failure analysis of slopes is presented, based on the variable local factors of safety in the limit equilibrium approach. A local factor of safety is defined at the base of each slice, and used to account for the progressive, local failure along a slip surface. It is also used to approximately simulate the softening behavior of soil. The introduction of local factors of safety results in an increase of the number of unknowns. In order to render the problem determinate, simplifying assumptions are simultaneously made of the interslice forces and the line of thrust which are separately used in the Morgenstern-Price method and the Janbu method. Two different techniques called AILC and AGLC are devised to deal with the local factors of safety in the failure zones. The results of case studies show that the proposed approach can simulate the actual behavior of progressive failure.
40.	Norio Yagi, Takuo Yamagami and Jing-Cai Jiang : Slope Stability Engineering, Editor, Proceedings of the International Symposium on Slope Stability Engineering (IS-Shikoku'99), Matsuyama, Nov. 1999.
41.	Takuo Yamagami, Jing-Cai Jiang and Tie-Qun Feng : A Limit Equilibrium Stability Analysis of Slopes with a Stabilizing Wall, Proceedings of the 2nd International Conference on Landslides, Slope Stability & The Safety of Infra- Structures, 277-284, Singapore, Jul. 1999. (Summary) A limit equilibrium method is proposed to evaluate the stability of slopes with an installed wall (e.g. a sheet pile wall). The central idea of this method is that a separate slip surface can be assumed in each of the upslope and downslope soil masses of the wall. A target value of the factor of safety for each of the slip surfaces is then prescribed by the designer, contrary to the conventional stability analysis procedure where the factor of safety is generally unknown in advance. In the present approach, the primary unknowns are interactive forces between the wall and soil masses under the prescribed target factors of safety. A wall designed so as to sustain the interactive forces certainly ensures the target factors of safety for the wall-installed slope. The Bishop method is employed for formulation, and then a repeated trial procedure is used to search for a pair of slip surfaces which provide the wall with the most dangerous situation. Here we call the pair of slip surfaces the critical slip surfaces. Some illustrative examples indicate that the proposed method can reasonably evaluate the stability of slopes with a wall.
42.	Takuo Yamagami, Tie-Qun Feng and Jing-Cai Jiang : A Stability Analysis Method for Cut Slopes in Clays, Proceedings of the 13th Southeast Asian Geotechnical Conference, 675-680, Taipei, Nov. 1998. (Summary) 掘削粘性土斜面はたとえ初期に飽和状態にある場合でも，掘削に伴う膨張過程で地表面より空気を吸い込み，少なくとも地表面近傍では不飽和状態となる．加えて，掘削による応力開放のため地山は不可避的に強度劣化を招く．本研究は筆者らが開発したこれら二つの本質的側面を取り込んだ有限要素解析コンピュータソフトの適用事例を紹介したものである．
43.	Takuo Yamagami, Tie-Qun Feng and Jing-Cai Jiang : A Coupled Finite Element Analysis for Cut Slopes Considering Swelling and Softening Effects, Proceedings of the Special Sino-Japanese Forum on Performance and Evaluation of Soil Slopes under Earthquakes and Rainstorms, 166-172, Dalian, Jun. 1998. (Summary) 有限要素法による掘削粘性土斜面の挙動解析法を提案している．要諦は斜面地山の膨張に伴う不飽和化と強度劣化を共に取り込んだ点にある．初期に飽和状態に有る地盤であっても，掘削に伴う膨張過程で地表面より空気を吸い込み不飽和化する．既往のいずれの解法もこの事実を看過しているが，筆者らはこれが結果的に無視できない誤差を生む原因となっている事実を明らかにした．こうして膨張に伴う不飽和化と強度劣化を共に取り込んだ新しい解法を構築した．
44.	Takuo Yamagami, Jing-Cai Jiang, Tie-Qun Feng, Naoyoshi Kurokawa and Masaaki Ezaki : Variable Critical Slip Surfaces in a Slope during an Earthquake, Proceedings of the Special Sino-Japanese Forum on Performance and Evaluation of Soil Slopes under Earthquakes and Rainstorms, 88-95, Dalian, Jun. 1998. (Summary) 地震による斜面の永久変位量の新しい評価法を提案したものである．一般に地震時斜面の永久変位はNewmark法で求められる．この方法は予め特定された最危険と思しき一つのすべり面に終始注目し，これに沿う地震時の変位を計算するのであるが，このやり方には致命的欠点の有ることが知られた．すなわち臨界すべり面は地震の間絶えずその位置を大きく変えているのである．こうした点を踏まえて新しい解法を展開したのが本論文のあらましである．
45.	Takuo Yamagami, Masakazu Taki and Jing-Cai Jiang : Progressive Failure Analysis of Slopes Based on LEM, Proceedings of the Special Sino-Japanese Forum on Performance and Evaluation of Soil Slopes under Earthquakes and Rainstorms, 35-48, Dalian, Jun. 1998. (Summary) 斜面の進行性破壊を考慮する二つの新しい方法が提案されている．すなわち``瞬時載荷状態の解析法(AILC)''と``漸増載荷状態の解析法(AGLC)''である．いずれの解法も極限平衡法の枠組み内でスライス底面ごとの局所安全率が定義されており，この値に基づいて局所的破壊域の発生とその進展が表現される．AGLCがより実態に則した解法である．しかし状況に応じてAILCもまた不可欠な解法であることが事例解析を通して強調されている．
46.	Takuo Yamagami, Yasuhiro Ueta and Jing-Cai Jiang : A Back Analysis Method for Unsaturated Soil Strength Parameters, Proceedings of the 2nd Pan-American Symposium on Landslides & 2nd Brazilian Conference on Slope Stability, Vol.1, 511-519, Rio de Janeiro, Nov. 1997. (Summary) Fredlundらの不飽和せん断強度式に現れる三つの強度パラメータを逆解析する方法論を展開したものである．不飽和土より成る斜面中に何らかの手段で二つの破壊面が与えられることを前提に，飽和土に対する山上·植田法を拡張応用することで，三つの強度パラメータが一挙に逆解析できる新しい方法を開発した．ここに二つの破壊面の生成法としては原位置における載荷版を介した破壊実験を想定している．
47.	Takuo Yamagami, Jing-Cai Jiang and Yasuhiro Ueta : Back Calculation of Strength Parameters for Landslide Control Works Using Neural Networks, Proceedings of the 9th International Conference on Computer Methods and Advances in Geomechanics, Vol.1, 651-656, Wuhan(China), Nov. 1997. (Summary) 非均質地山中の破壊斜面や地すべりの強度定数逆解析法を提案したものである．筆者達は過去に同じ問題に対し，非線型計画法の適用を検討しているが，ここでは新たにニューラルネットワークの援用を試みた．その結果，学習データの作成方法にまだまだ改良と工夫を要する面無しとはしないが，非線型計画法で経験された程の解の多面性は現れておらず，今後に大きい可能性を秘めている事が判明した．
48.	Takuo Yamagami and Jing-Cai Jiang : Determination of the sliding direction in three-dimensional slope stability analysis, Proceedings of the 2nd International Conference on Soft Soil Engineering, Vol.1, 567-572, Nanjing, May 1996. (Summary) 任意形状の三次元臨界すべり面探索法に基づき，複雑な幾何学的形状を示す地山の主すべり方向を見つけ出す方法論を展開している．三次元極限平衡法の如何なる安全率算定式も，予め主すべり方向が既知となっていなければ適用する事は出来ない．ところが地山の形状が複雑で錯綜しているとき，事前に主すべり方向を知ることは不可能である．むしろこれは解析の結果として明らかになるべき情報であろう．こうして動的計画法を活用した巧妙な手法が導き出されている．
49.	Takuo Yamagami and Jing-Cai Jiang : A Generalized Method for Determining the Critical Slip Surface in Three-Dimensional Slope Stability Analysis, Proceedings of the 7th International Symposium on Landslides, Vol.2, 1433-1438, Trondheim, Jan. 1996. (Summary) 極限平衡法の枠組み内にある三次元安全率算定式は過去25年ばかりの間数多く提案されてきた．ところがこうした三次元安全率算定式に基づいて安全率最小のすべり面つまり臨界すべり面を探索する方法となると殆ど手が付けられていないのが現状である．本研究は動的計画法と乱数発生法を結合し，実用的演算時間内で効率よく三次元臨界すべり面を探索する手法を世界に先駆けて提案したものである．

Proceeding of Domestic Conference:

1.	Susumu Nakano, Miho Nishimura, Junko Kanai and Jing-Cai Jiang : Flooding damage in Kurume City caused by the heavy rains of July 2023 and disaster response at schools and kindergartens, 土木学会四国支部技術研究発表会講演概要集, Vol.30, Jun. 2024.
2.	Junko Kanai, Susumu Nakano and Jing-Cai Jiang : A case study of the cooperation system in welfare facilities due to heavy rain in July 2023, Japanese Journal of Disaster Medicine Vol. 28 Supplement, 508, Feb. 2024. (Summary) From July 14 to 16, 2023, Akita City experienced record-breaking rainfall. A senior citizen facility located in Gojome-cho was inundated above floor level due to the flooding of the Baba However, the facility was able to quickly move residents and temporarily accept them thanks to cooperation beyond the framework of the management corporation. In this presentation, we investigate the evacuation behavior and business continuity of elderly care facilities affected by the July 2023 torrential rainfall, in order to provide basic data for considering how cooperation among corporations should be. This presentation will examine the evacuation and business continuity of elderly care facilities affected by the July 2023 torrential rainfall, in order to provide basic data for examining the nature of cooperation among corporations. A survey of flood traces was conducted to determine the extent of damage in the area surrounding the facilities. The characteristics of evacuation behavior and business continuity were also The characteristics of evacuation behavior and business continuity were also investigated through interviews. The residents were evacuated to a nearby gymnasium or another facility because of the increased risk of the Babame River flooding.The residents were evacuated to a nearby gymnasium or another facility. Some residents were on life-support systems. The next day, a nearby corporation sent staff and a bus to transport and receive the elderly residents. Four corporations in the prefecture are working together to establish a corporation to promote social welfare partnerships.The four corporations in the prefecture had established a cooperative system with the aim of establishing a "social welfare partnership promotion corporation," which facilitated the smooth transportation of the elderly. The "Social Welfare Cooperation Promotion Corporation" is a nonprofit organization that promotes the enhancement of community welfare and disaster response capabilities.The "Corporation for the Promotion of Social Welfare Cooperation" is a national system established in 2022 for the purpose of enhancing community welfare and strengthening the ability to respond to disasters. This is a useful case study for examining how corporations should cooperate with each other in the event of a disaster.The system is a useful case study for examining how corporations should work together in times of disaster. (Keyword) Inundation damage / elderly facilities / intercorporate collaboration
3.	Susumu Nakano, Yasufumi Yuasa, Jing-Cai Jiang and Junko Kanai : case analysis of proactive measures and medical continuity for hospitals located in areas expected to be flooded, Japanese Journal of Disaster Medicine Vol. 28 Supplement, 499, Feb. 2024. (Summary) There have been frequent cases of core hospitals being inundated by heavy rainfall equal to or greater than the planned level, such as the East Japan Typhoon in 2011 and the torrential rainfall in July 2020. This paper discusses the countermeasures that should be taken by hospitals located in the flood-prone areas, based on interviews conducted from 2009 to 2021 at a total of eight hospitals, and summarizes the status of flood damage, implementation of countermeasures (such as raising the ground level and installing watertight boards), and continuation of medical care after the disaster. The results are summarized as follows. In particular, flood inundation analysis was conducted for the three hospitals that had taken precautionary measures, and the progress of inundation and the disaster response of the hospitals are discussed. The installation of watertight boards and the implementation of flood prevention measures around critical facilities were effective in reducing disaster damage when the depth of flooding was small, and helped to ensure the early continuation of medical care. However, when flooding exceeded 2-4 m in the hospital's periphery, damage occurred to important and expensive facilities such as MRI, CT, and EVs. The hospital that was inundated by 2.8 m of water had most of its medical functions located on the second floor or above, so although the MRI and EV were damaged, outpatient services were resumed two days after the flooding was resolved. In the case of an expected inundation depth of more than 3 m, it is necessary to take measures such that important facilities and medical functions are located on the second floor or above. (Keyword) Inundation damage / hospital / disaster prevention measures
4.	Jing-Cai Jiang, Susumu Nakano and Junko Kanai : Lessons learned from failed cases of flooding prevention measures, Japanese Journal of Disaster Medicine Vol. 28 Supplement, 391, Feb. 2024. (Summary) Many of the major hospitals in Japan are located in areas that are expected to be inundated by river flooding, and there have been many cases of hospitals that have been damaged by flooding in areas hit by a series of heavy rains in recent years. Although flood inundation estimates are made for the planned scale and the maximum scale of flooding, the actual depth of flooding is not always as expected. Therefore, although watertight panels were installed to prevent flooding in hospital buildings as a precautionary measure, there have been many cases of flooding exceeding the watertight panels. The purpose of this paper is to point out the importance of accurately estimating flooding depths according to the actual scale of rainfall, which is not indicated in flood hazard maps, based on past examples of flooding countermeasures that failed in advance. The study was conducted by surveying and collecting data on several cases of hospitals and other facilities that were flooded beyond the watertight panels installed due to recent heavy rains, and summarizing the problems and issues that emerged from the responses. The range of assumed inundation depths shown in flood hazard maps is large, and the actual inundation depths are not always the same as the planned scale and the maximum scale. Therefore, we propose a method to predict inundation depths in advance according to the actual rainfall magnitude, which is not shown in flood hazard maps. (Keyword) Inundation damage / hospital / disaster prevention measures
5.	Yasufumi Yuasa, 宮地武彦, Yasunori Kozuki and Jing-Cai Jiang : RESPONSES OF DIALYSIS MEDICAL INSTITUTIONS DURING WATER OUTAGES DUE TO TYPHOON TALAS IN 2022 AND FUTURE ISSUES, 土木学会安全問題討論会'23, Dec. 2023. (Keyword) 透析治療 / 医療機関 / 事業継続 / 台風 / 断水
6.	Jing-Cai Jiang, Yasunori Kozuki, Susumu Nakano and 樫本誠一 : 山間部温泉観光地における豪雨時災害リスクの再考, 第42回日本自然災害学会学術講演会講演概要集, 131-132, Sep. 2023.
7.	Jing-Cai Jiang, Susumu Nakano, Atsuko Shirayama and Seiichi Kashimoto : 令和5年奥能登地震による地盤・土木構造物の被害, 地震工学研究発表会講演論文集, Vol.43, 204-209, Sep. 2023. (Summary) W (Keyword) 2023年奥能登地震 / 被害調査 / 地盤 / 土木構造物
8.	Susumu Nakano, Jing-Cai Jiang, Atsuko Shirayama and Seiichi Kashimoto : Oku-Noto Earthquake in 2023, --- Damage to local industries, temples and shrines ---, 地震工学研究発表会講演論文集, Vol.43, 184_1-184_6, Sep. 2023. (Summary) We conducted a damage survey of the Okunoto earthquake that occurred on May 5, 2023. In particu-lar, we focused on the damage to local industries that represent the Oku-Noto region and temples and shrines. We organized the distance attenuation characteristics of the maximum acceleration and meas-ured seismic intensity around Suzu City using the distance attenuation formula. We confirmed that the estimate data by the distance attenuation equation are generally valid although they give larger values than the observed values. Surveys conducted by local manufacturing companies showed that aging buildings, kilns, and other structures with low earthquake resistance were damaged. Damage surveys of temples and shrines revealed that torii gates and bell towers, which have a high center of gravity, col-lapsed due to strong shaking (Keyword) the Oku-noto Earthquake in 2023 / damage survey / local industry / temple / shrine (Tokushima University Institutional Repository) ● Metadata: 118688 (Tokushima University Institutional Repository: 118688)
9.	Jing-Cai Jiang and Susumu Nakano : 地震動を考慮した地震時盛土斜面の滑り変位評価, 日本地震工学会大会-2022概要集, 65-70, Dec. 2022.
10.	Susumu Nakano, Jing-Cai Jiang, Masaki Entani and Yuuji Tsuchiyama : Surveys of inland water damage in the Rokkaku River basin in August 2019 and August 2021, Proceeding of Annual Conference of Japan Society for Natural Disaster Science, Vol.41, 103-104, Sep. 2022. (Summary) 六角川流域では令和元年8月下旬と令和3年8月中旬に線状降水帯の形成に伴う集中豪雨により，武雄市，大町町などで広範囲に浸水被害が発生した．2回の水害に対する現地調査と洪水氾濫解析を実施した． (Keyword) the Rokkaku river / inland flodding / the heavy rain in Aygust 2019 / the heavy rain in August 2021
11.	Jing-Cai Jiang and Susumu Nakano : 近年の建設残土崩壊事例から盛土規制法についての考察, 第41回日本自然災害学会学術講演会講演概要集, 141-142, Sep. 2022. (Keyword) the heavy rain event of July 2018 / ため池 / 決壊 / 斜面崩壊 / 土石流
12.	長谷川真之, Susumu Nakano, Yasufumi Yuasa, Jing-Cai Jiang, Junko Kanai, Masahiko Tokunaga and Miho Nishimura : 令和2年7月豪雨における保育所の災害対応, 土木学会四国支部第28回技術研究発表会, May 2022.
13.	Yasufumi Yuasa, Yuuki Ishida, Susumu Nakano and Jing-Cai Jiang : INITIAL RESPONSE AND BUSINESS CONTINUITY IN THE EVENT OF FLOOD DAMAGE AT WATER SUPPLY FACILITY, Collection of materials for the Safety Issues Research Symposium in 2020, 241-249, Nov. 2020. (Summary) The heavy rain event of July 2018 caused several severe flood disasters and landslide disasters. Some water supply facilities were damaged and the water supply was interrupted. Since water supply became difficult at water facilities, they received support from other facilities and responded to temporary facilities. We conducted interview surveys on the affected water supply facilities and summarized the way of initial response and the business continuity in the event of inundated damage. In the event of flood damage or landslide damage, the procedure from the initial response to the resumption of recovery was organized, and proactive measures for achieving early recovery were proposed. (Keyword) water supply facility / flood damage / business continuity / heavy rain event of July 2018 / initial response
14.	Jing-Cai Jiang and Susumu Nakano : Investigation on a rainfall-induced fill slope failure in the upper side of a pound in Hiroshima, Japan, 地盤工学会四国支部技術研究発表会講演概要集, 45-46, Nov. 2020.
15.	Yasufumi Yuasa, Yuuki Ishida, Susumu Nakano and Jing-Cai Jiang : 平成30 年7 月豪雨の被災事例からみる水道施設の事業継続, 土木学会四国支部第26回技術研究発表会, May 2020.
16.	Masaki Entani, Susumu Nakano and Jing-Cai Jiang : 上田電鉄千曲川橋梁付近の河岸浸食に及ぼす河道内植生の影響, 土木学会四国支部第26回技術研究発表会, May 2020.
17.	Jing-Cai Jiang and Susumu Nakano : 平成30年7月豪雨による福山市勝負迫池の決壊被害について, 第38回日本自然災害学会学術講演会講演概要集, 41-42, Sep. 2019. (Keyword) the heavy rain event of July 2018 / ため池 / 決壊 / 斜面崩壊 / 土石流
18.	Yasufumi Yuasa, Susumu Nakano and Jing-Cai Jiang : スタジアム防災プロジェクトの取り組み― J リーグ観戦者対象の地震・津波防災意識啓発, 令和元年度土木学会全国大会第74回年次学術講演会, CS12-70, Sep. 2019.
19.	Chunmeng Xu, Susumu Nakano and Jing-Cai Jiang : 中国淮河流域蒙洼遊水地における洪水放流被害と浸水数値解析, 土木学会四国支部第25回技術研究発表会, May 2019.
20.	Youdai Gon, Toshitaka Baba and Jing-Cai Jiang : 永正地震津波の解明を目的とした海部灘海底地すべり調査, 平成30年度土木学会四国支部第29回技術研究発表会, May 2018.
21.	Jing-Cai Jiang and Susumu Nakano : 2016年熊本地震による益城町の地盤災害の特徴, 日本地震工学会・大会2017発表論文集(CD-ROM), 1-6, Nov. 2017.
22.	Susumu Nakano, Jing-Cai Jiang, Hiroki Uehara and Ena Izutani : 2016年台風第10号による岩手県久慈市内の浸水被害, 第36回日本自然災害学会学術講演会講演概要集, 139-140, Sep. 2017. (Keyword) 2016年台風第10号 / 久慈川 / 洪水 / 災害調査
23.	Jing-Cai Jiang, 李傑龍 and Susumu Nakano : 南海トラフ地震による高知県沿岸地盤上下変動の再現, 公益社団法人土木学会第36回地震工学研究発表会(CD-ROM), Oct. 2016.
24.	奥山陽平 and Jing-Cai Jiang : 小型振動台を用いたニューマーク法の検証実験と考察, 地盤工学会四国支部平成26年度技術研究発表会講演概要集, 61-62, Nov. 2014.
25.	Jing-Cai Jiang : 平成25年12月19日決壊した山ノ神池(淡路市佐野地区)の現地調査報告, 徳島大学防災フォーラム:最近の豪雨災害を振り返る, Jan. 2014.
26.	Masaya Satoh, Ken-ichi Nishiyama, Jing-Cai Jiang, 大戸井義美 and Keisuke Ishida : 国指定天然記念物「阿波の土柱」の保全に向けてー土柱の歴史・変遷，植生管理についてー, 第130回徳島生物学会, Dec. 2013. (Summary) 「阿波の土柱」は，阿波市の阿讃山脈南麓の丘陵斜面の崩壊地が，雨水による侵食により搭状やひだ状となった侵食地形である．明治期後半に新聞紙上で紹介されて以来，名勝として知られるようになり，昭和9年(1934)に国の天然記念物に指定された．しかし，年月が経つ間に侵食による土柱の衰微や植生の繁茂といった景観の悪化が顕著になり，平成16年(2004)には台風で柱の一部が大きく崩落するなど景観維持のための対策が必要になってきた．また，観光においても大正期には一日に二千人を数えた来訪者は大きく減っている．このような状況から，阿波市は平成23年(2011)に「阿波の土柱」の価値を保全するための保存管理計画を策定することを目的として，文化庁や徳島県の協力の下，学識経験者らを委員とする『国指定天然記念物「阿波の土柱」緊急調査指導委員会』を組織した．委員会で2年にわたり調査や検討が重ねられ，今年3月に調査報告書がまとめられた．演者は委員の一人として関わったので，その内容について紹介する．【土柱の発見と形成時期】「阿波の土柱」は平安時代に阿波守であった菅原清公が歌に詠んだとする説があるが，これは様々な理由から明確に否定される．遡れる最も古い記録は，明治35年(1902)12月27日の徳島毎日新聞に掲載された西林村五明の尋常小学校長柏木直平が寄稿した記事である．大正9年(1920)に徳島師範学校の教諭尾崎一雄が『地学雑誌』に「阿波の土柱」として紹介し，全国に知られるようになった．観察される侵食のスピードと発見時期とを併せて考えると，「阿波の土柱」を形成した斜面崩壊の発生時期は，江戸後期から明治前半のことと考えられる．【植生管理】植被は雨水による土柱の侵食を抑える作用を持つ一方で，樹木の根はクラックの形成を助長する．また，岩肌に生えるマツは，景観に良いアクセントを与える一方で，高い樹木やツタ類の繁茂は，土柱を覆い隠したり，根の周囲にフミン酸が蓄積して土壌を黒化させたりと景観に悪影響を与える．よって景観や侵食に悪影響を与えないもの除いて植物は除去することが望ましい．【今後の土柱】「阿波の土柱」である波濤ヶ嶽は，侵食過程からみれば既に壮年期に入った土柱である．近隣には橘嶽，筵嶽，不老嶽，燈籠嶽と呼ばれる侵食がそれほど進んでいない土柱があり，これらを併せて土柱の侵食過程の理解を深めることができるような活用を図っていく必要がある．阿波市教育委員会編「国指定天然記念物「阿波の土柱」緊急調査報告書—国庫補助金事業による天然記念物緊急調査—」阿波市・阿波市教育委員会(2013)
27.	Jing-Cai Jiang, Susumu Nakano and Junko Kanai : 2013年4月13日淡路島地震における地盤被害, 日本地震工学会第10回年次大会梗概集, Nov. 2013.
28.	Jing-Cai Jiang : 生穂新島の造成と液状化被害, 2013年淡路島地震調査報告会, Sep. 2013.
29.	Jing-Cai Jiang : 生穂新島の造成と液状化被害, 2013年淡路島地震調査報告会, Sep. 2013.
30.	Jing-Cai Jiang : 洲本市と淡路市での地盤被害, 2013年淡路島地震調査速報会, Apr. 2013.
31.	Jing-Cai Jiang and Susumu Nakano : 集中豪雨による崩壊斜面の強度定数逆解析, 232-233, Aug. 2012.
32.	Jing-Cai Jiang : 新潟・福島豪雨災害:土砂災害, 平成23年豪雨災害調査中間報告会, Sep. 2011.
33.	Yousuke Nakai, Jing-Cai Jiang and Yukimasa Kanda : 法先近傍に矢板壁を有する盛土構造物の地震時安定性評価法に関する提案(第二報), 地盤工学会四国支部平成22年度技術研究発表会講演概要集, 41-42, Oct. 2010.
34.	Tatsuro Omoto and Jing-Cai Jiang : 斜面安定解析における新しい三次元Janbu法の提案, 地盤工学会四国支部平成22年度技術研究発表会講演概要集, 39-40, Oct. 2010.
35.	Jing-Cai Jiang and Susumu Nakano : 豪雨災害前後における山間部住民の防災意識変化―徳島県那賀町上那賀地区を対象としてー, 地盤工学会四国支部平成22年度技術研究発表会講演概要集, 33-34, Oct. 2010.
36.	Yuhta Nishi, Sohichiro Yagi, Asaka Seki, Akira Uemura, Jing-Cai Jiang and Susumu Nakano : 山間地域の防災対策の実態, 日本自然災害学会学術講演会講演概要集, Vol.29, 19-20, Sep. 2010. (Summary) 平成16年台風10号，平成20年台風9号で大きな豪雨災害が発生した徳島県那賀町上那賀地区を対象として，ヒアリング調査を通して防災対策の現状，災害後の防災意識変化などを調べた． (Keyword) 平成16年台風10号 / 豪雨災害 / 徳島県那賀町 / 防災対策 / 中山間地
37.	Jing-Cai Jiang : 三次元すべり面理論に基づく破壊斜面の強度定数逆算, 土木学会第65回(平成22年度)年次学術講演会講演概要集(CD-ROM), 15-16, Sep. 2010.
38.	Tsunataka Furuya and Jing-Cai Jiang : 結晶片岩地すべりのすべり面粘土の定性的評価と定量的評価, 地盤工学会四国支部平成21年度技術研究発表会, 41-42, Nov. 2009.
39.	Yosukei Nakai, Jing-Cai Jiang and Yukimasa Kanda : 法先近傍に矢板壁を有する盛土構造物の地震時安定性評価法に関する提案, 地盤工学会四国支部平成21年度技術研究発表会, 105-106, Nov. 2009.
40.	Tatsurou Omoto and Jing-Cai Jiang : 極限平衡法に基づく新しい三次元斜面安定解析法に関する研究, 地盤工学会四国支部平成21年度技術研究発表会, 45-46, Nov. 2009.
41.	Kazumasa Onishi and Jing-Cai Jiang : 逐次施工過程を考慮した斜面の進行性破壊解析に関する研究, 地盤工学会四国支部平成21年度技術研究発表会, 47-48, Nov. 2009.
42.	Jing-Cai Jiang and Takuo Yamagami : 1978年宮城県沖地震による谷埋盛土崩壊斜面の安定解析, 地盤工学会四国支部平成21年度技術研究発表会, 39-40, Nov. 2009.
43.	Jing-Cai Jiang, Takuo Yamagami and 冨山善史 : 2004年新潟県中越地震被災地への広域斜面崩壊予測法の適用, 第48回日本地すべり学会研究発表会地震地すべり特別セッション, 191-196, Aug. 2009.
44.	Jing-Cai Jiang : 土砂災害・橋梁被害(岩手・宮城内陸地震調査報告会), Jul. 2009.
45.	Jing-Cai Jiang, Takuo Yamagami and Viet Bao Nguyen : 地震時盛土斜面の不安定性評価手法による事例検討, 第30回土木学会地震工学研究発表会論文集(CD-ROM), May 2009.
46.	Jing-Cai Jiang : 2008年四川大地震災害現地調査報告―斜面崩壊・地すべり被害を中心として―, 社団法人地盤工学会四国支部平成20年度技術研究発表会講演概要集, 53-54, Sep. 2008. (Keyword) earthquake / landslide / 地すべり
47.	内輪丈彰, 能野一美, Jing-Cai Jiang and Takuo Yamagami : 落石運動解析に要するDEMパラメータの推定法に関する一考察, 社団法人地盤工学会四国支部平成20年度技術研究発表会講演概要集, 53-54, Sep. 2008. (Keyword) 落石 / DEMパラメータ / 逆解析
48.	Jing-Cai Jiang and Takuo Yamagami : 地震時広域岩盤斜面の不安定性評価-平面すべりを想定した場合-, 第47回日本地すべり学会研究発表会発表講演集, 244-249, Aug. 2008. (Keyword) 地震 / 広域斜面崩壊 / 平面すべり
49.	竹田竜樹, Jing-Cai Jiang and Takuo Yamagami : 線形・非線形強度式が斜面安定解析に及ぼす影響について, 平成20年度土木学会四国支部第14回技術研究発表会, 155-156, May 2008.
50.	Ryuki Tekeda, Jing-Cai Jiang and Takuo Yamagami : Three-dimensional evaluation of anchor forces needed to increase slope stability, 社団法人地盤工学会四国支部平成19年度技術研究発表会講演概要集, 39-40, Oct. 2007. (Keyword) アンカー力 / 目標安全率 / 三次元すべり面
51.	Jing-Cai Jiang, Takuo Yamagami and Yoshifumi Tomiyama : Stability analysis of slopes under combined horizontal and vertical seismic accelerations, 社団法人地盤工学会四国支部平成19年度技術研究発表会講演概要集, 41-43, Oct. 2007. (Keyword) 鉛直地震動 / 震度法 / Newmark法
52.	Takeaki Uchiwa, Kazuyoshi Yokino, Jing-Cai Jiang and Takuo Yamagami : A study of identification of DDA parameters for rockfall simulations, 社団法人地盤工学会四国支部平成19年度技術研究発表会講演概要集, 37-38, Oct. 2007. (Keyword) 落石運動 / 不連続変形法 / 逆解析
53.	Yoshifumi Tomiyama, Jing-Cai Jiang and Takuo Yamagami : Evaluation of seismic instability of rock slopes in a large area based on planar failure mode, 社団法人地盤工学会四国支部平成19年度技術研究発表会講演概要集, 53-54, Oct. 2007. (Keyword) 地震 / 広域岩盤斜面崩壊 / GISとNewmark法
54.	Yuta Ikawa, Jing-Cai Jiang and Takuo Yamagami : Back analysis of MC-DP model parameters for natural ground from borehole lateral load test data, 社団法人地盤工学会四国支部平成19年度技術研究発表会講演概要集, 55-56, Oct. 2007. (Keyword) 強度定数逆解析法 / 孔内水平載荷試験 / 有限要素法
55.	Jing-Cai Jiang, Takuo Yamagami and Akito Sugimoto : Permanent displacement-based regional seismic slope instability assessment, 第42回地盤工学研究発表会平成19年度発表講演集, 1839-1840, Jul. 2007. (Keyword) 地震 / 永久変位 / 広域斜面崩壊
56.	Yoshifumi Tomiyama, Akito Sugimoto, Jing-Cai Jiang and Takuo Yamagami : Regional seismic slope instability assessment using GIS and Newmark's method, 社団法人地盤工学会四国支部平成18年度技術研究発表会講演概要集, 35-36, Nov. 2006. (Summary) 近年，より精度の高い地震時斜面崩壊ハザードマップの作成を狙いとして，GISとNewmark法を結び付けた地震による広域斜面不安定性評価に関する研究が盛んに行われている．しかし，現有のこの種の予測法は，いずれも長大斜面の理論に基づくものである．即ち，対象領域の数値標高データ(DEM)をGISに取り込み，DEMの各セルの最大傾斜角度を持って斜面を長大斜面モデル化し，領域の表層地質を考慮しつつ各セルの永久変位を見積もっている．しかし，長大斜面モデルに基づくと，算出される永久変位はセルの傾斜角度に強く依存することになる．即ち，対象領域DEMのセルサイズによって，各セル内の傾斜角度が変わるので，見積もった永久変位の分布もDEMのセルサイズに依存するという不自然な結果になる．また，最近日本全国においても整備されつつあるセルサイズの小さい高精度DEM(例えば10mDEM)においては，各セルの斜面を長大斜面と仮定すること自体が不適切になる．著者らは，セルサイズの小さい高精度DEMに対応するため，新しい斜面モデル化技術を開発してきた．本報は，航空レーザー測量より得られた精度の高いDEMを用いて著者らの提案法の検証を行った結果を述べるものである．その結果，従来の長大斜面モデルにかかわる問題点がほとんど解消され，永久変位に基づくより精度の高い地震時広域斜面崩壊予測が可能になることがわかった． (Keyword) 地震 / 広域斜面崩壊 / GISとNewmark法
57.	Kimihito Yamashiro, Kazuyoshi Yokino, Jing-Cai Jiang and Takuo Yamagami : A study of sensitivity analysis of DDA parameters for rockfall simulations, 社団法人地盤工学会四国支部平成18年度技術研究発表会講演概要集, 47-48, Nov. 2006. (Summary) 落石数値解析手法の一つとして，不連続変形法(DDA)が用意されているが，解析上重要な入力パラメータの設定法が確立されていない．本研究の最終的な目的は，落石解析に要するDDA運動パラメータの同定法を確立することである．その第一歩として本研究では，個々のパラメータが落石挙動の解析結果に与える影響を評価するために感度解析を実施し，その結果をもとに，逆解析の対象となるパラメータを特定した結果を報告する． (Keyword) 落石運動 / 不連続変形法 / 感度解析
58.	Jing-Cai Jiang and Takuo Yamagami : A new method for three-dimensional back analysis of strength parameters from single slip in a homogeneous slope, 社団法人地盤工学会四国支部平成18年度技術研究発表会講演概要集, 45-46, Nov. 2006. (Summary) 地すべり対策工の設計上必要となる強度定数(粘着力c'，内部摩擦角φ')は一般に逆解析によって決定される．これまでの研究では，c'，φ'の逆解析を二次元問題として扱うことが多かった．しかし，実際の斜面破壊は三次元的な現象であり，より現実的な地山挙動を考慮しようとすれば三次元解析が必要不可欠である．強度定数の三次元逆算法はすでに提案されているが1)，本研究ではそうした従来の提案法とはまったく異なった観点から1つの新奇な三次元手法を展開する．そのためにまず，土の単位体積重量と間隙水圧の分布が与えられた任意の均質斜面において，極限平衡法のある特定の三次元斜面安定解析理論に基づき探索された臨界すべり面の位置がその斜面の強度定数(c'とφ')ではなく，それらの比(つまりc'/tanφ'=λcφ)にユニークに対応することを明らかにする．次いでこの事実に基づき地山強度定数の合理的な三次元逆解析法を構築し，仮想問題および実際の地すべり地に適用して本提案法の精度検証を行う． (Keyword) 逆解析 / 強度定数 / 三次元すべり面
59.	Kazuyoshi Yokino, Takuo Yamagami and Jing-Cai Jiang : Application experience to non-homogeneous slope of an identification of DEM parameters for rockfall analysis, 社団法人地盤工学会四国支部平成18年度技術研究発表会講演概要集, 21-22, Nov. 2006. (Summary) 著者らは，落石防護工の設計に資することを狙いとして，落石の落下速度・跳躍量・落下位置等を推定する一手法を提案している．提案法の骨子は，落石落下運動の表現にDEM(個別要素法)を応用することを前提として，それに要するパラメータを逆解析的に決定することである．この方法は，間接的とは言え落石が地山に衝突する際の地山の変形や立木と落石の衝突の影響などを反映したパラメータの値を与える．当初，提案法はDEMパラメータに関して均質場を対象としていた．つまり，落石落下開始地点から最終到達地点までただ一組のパラメータで落下運動が表現できる状況のみを取り扱っていた．ところが，自然斜面は植生状況や地質・土質の相違により，落石の落下経路に沿って非均質となっている状況が大半を占めている．したがって，提案法を実務で活用するためにはそうした自然斜面の非均質性を十分考慮できることが不可欠と言わねばならない．そのため，提案法は斜面がDEMパラメータに関して非均質な場へも適用できるように発展させている．本報では，その手順と適用例を紹介し提案法の有用性を示す．適用例としては，規模が大きく綿密な事後調査がなされている実際の落石災害事例を採り上げている． (Keyword) 落石解析 / DEM(個別要素法) / 逆解析
60.	Yuta Ikawa, Jing-Cai Jiang and Takuo Yamagami : Back analysis of MC-DP model parameters for natural ground from borehole lateral load test data, 社団法人地盤工学会四国支部平成18年度技術研究発表会講演概要集, 23-24, Nov. 2006. (Summary) 本研究の目的は，ボーリング孔内水平載荷試験で計測される荷重-変位関係を基に，地山せん断強度を逆解析的に求める方法を構築することである．具体的には，先ず地盤調査等の目的で自然斜面に設けられるボーリング孔内において，鉛直孔壁の載荷部に水平荷重を段階的に加え，載荷部に設けた数点の観測点の水平変位を計測する．そして計測変位と有限要素法による計算変位の誤差二乗和を最小とするMohr-Coulomb強度定数c', φ'を求める．前報は，この最適値問題を効率的に解くために遺伝的アルゴリズムを適用し，仮想問題による提案法の妥当性を検証した．本稿では，さらに模型地盤を介しての精度の検証を行うべく，本提案法を孔内水平載荷試験の小規模室内模型実験に適用し，求められた強度定数の逆算値を三軸圧縮試験による実験値および荒井・辻により推定された(c', φ')値と比較検討した．以下に得られた結果について報告する． (Keyword) 強度定数逆解析法 / 孔内水平載荷試験 / 有限要素法
61.	Jing-Cai Jiang and Takuo Yamagami : Strength parameters from back analysis of a multi-layered slope failure, 第41回地盤工学研究発表会平成18年度発表講演集, 2233-2234, Jul. 2006. (Keyword) 逆解析 / 強度定数 / 多層破壊斜面
62.	Kimihito Yamashiro, Jing-Cai Jiang, Kazuyoshi Yokino and Takuo Yamagami : DEMによる落石数値シミュレーションに関する一考察, 平成18年度土木学会四国支部第12回技術研究発表会, 246-247, May 2006. (Summary) 筆者らは，かねてより個別要素法(DEM)を用いた落石運動のシミュレーションに関する研究に取り組んできた．そして，ある任意の斜面に対して，落石の大きさおよびその落下経路が与えられれば，落石数値シミュレーションに要するDEMパラメータを効率よく同定できる方法を確立している．そこで，本研究では''我々が提案している同定法により求められたDEMパラメータ値，すなわち，ある一つの石をターゲットとして同定されたパラメータが，落石の大きさや重量が異なる石に対してどこまで対応できるのか?''について検討を行った．
63.	Akito Sugimoto, Jing-Cai Jiang and Takuo Yamagami : GISとNewmark法に基づく地震時広域斜面崩壊予測法に関する研究(第三報), 平成18年度土木学会四国支部第12回技術研究発表会講演概要集, 244-245, May 2006. (Summary) 本研究は，GISとNewmark法に基づく地震時広域斜面崩壊予測法を提案するものである．前報までは予測システムの構築に重点を置いていたため，国土地理院発行の50mメッシュ数値地図を地形(標高)データとして利用すると共に，対象地域の土質定数を一律に仮定し，提案法の検証を行ってきた．本稿では，STRIPE法を採用することにより等高線図から任意間隔の数値標高データ(DEM)を作成し，対象地域の地質区分などに応じてそれぞれの区分に土質定数を与える方法を考案した．その一適用例として，南海地震を想定した場合の理想化・単純化された状態下の徳島市眉山周辺における永久変位量の分布予測結果を示す．
64.	Shinomiya Akihito, Jing-Cai Jiang and Takuo Yamagami : Back analysis of MC-DP model parameters based on borehole lateral load tests, 社団法人地盤工学会四国支部平成17年度技術研究発表会講演概要集, 35-36, Nov. 2005. (Summary) 本研究の目的は，ボーリング孔内水平載荷試験の観測データを基に，地山せん断強度を逆解析的に求める方法を構築することである．具体的には，先ず地盤調査等の目的で自然斜面に設けられるボーリング孔内において，鉛直孔壁の載荷部に水平荷重を段階的に加え，載荷部における数点の観測点の変位を計測する．そして計測変位と有限要素法による計算変位の誤差二乗和を最小とするMohr-Coulomb強度定数c'，φ'を求める．なお，最適値問題を解くために遺伝的アルゴリズムおよび制約条件付き非線形逐次二次計画法(NLSSQP法)を用いている．ここでは，提案法の概要を述べると共に，モデル地盤へ適用した結果を報告する． (Keyword) Borehole lateral load test / Finite element method / Genetic Algorithm
65.	Jing-Cai Jiang and Takuo Yamagami : Back analysis charts of strength parameters for failed uniform slopes, 第40回地盤工学研究発表会平成17年度発表講演集, 2453-2454, Jul. 2005. (Keyword) 逆解析 / 強度定数 / 計算図表
66.	松井剛志, Takuo Yamagami, Jing-Cai Jiang and Yukimasa Kanda : Experimental study of ground failure behavior around stabilizing piles, 社団法人地盤工学会四国支部平成15年度技術研究発表会講演概要集, 67-68, Nov. 2003.
67.	Shigeo Uemura, Takuo Yamagami, Jing-Cai Jiang and Yukimasa Kanda : Back analysis of strength parameters in a failed heterogeneous slope, 社団法人地盤工学会四国支部平成15年度技術研究発表会講演概要集, 53-54, Nov. 2003.
68.	Yukihiro Akasaka, Takuo Yamagami and Jing-Cai Jiang : Prediction of earthquake-induced landslides in a wide area using CIS and Newmark method, 社団法人地盤工学会四国支部平成15年度技術研究発表会講演概要集, 29-30, Nov. 2003.
69.	Jing-Cai Jiang and Takuo Yamagami : A comparison between simplified and rigorous methods for 3D slope stability analysis, 第38回地盤工学研究発表会平成15年度発表講演集, 2227-2228, Jul. 2003. (Keyword) 三次元安定解析 / 臨界すべり面 / 極限平衡法
70.	Jing-Cai Jiang, Takuo Yamagami and R. Baker : The effect of strength envelope nonlinearity on three-dimensional slope stability analysis, 社団法人地盤工学会四国支部平成14年度技術研究発表会講演概要集, 67-68, Nov. 2002.
71.	Yukimasa Kanda, Takuo Yamagami, Jing-Cai Jiang and 柴田誠司 : A method for evaluating the stability of slopes with stabilizing walls (3rd), 社団法人地盤工学会四国支部平成14年度技術研究発表会講演概要集, 65-66, Nov. 2002. (Keyword) 極限平衡法 / 斜面安定解析 / 抑止壁
72.	上島誠, Takuo Yamagami, Jing-Cai Jiang and Yukimasa Kanda : Evaluation of anchor force required for slope stabilization, --- Comparison of the proposed method and conventional method ---, 社団法人地盤工学会四国支部平成14年度技術研究発表会講演概要集, 43-44, Nov. 2002.
73.	藤山修, Takuo Yamagami and Jing-Cai Jiang : Prediction of earthquake-induced landslides in a wide area using GIS and Newmark method, 社団法人地盤工学会四国支部平成14年度技術研究発表会講演概要集, 11-12, Nov. 2002.
74.	Yukimasa Kanda, Takuo Yamagami, Jing-Cai Jiang and 洲本幸太 : A method for evaluation the stability of slopes with stabilizing walls, 第37回地盤工学研究発表会平成14年度発表講演集, 2239-2240, Jul. 2002.
75.	Jing-Cai Jiang and Takuo Yamagami : Search for the three-dimensional critical slip surface based on an extended Spencer method, 第37回地盤工学研究発表会平成14年度発表講演集, 2211-2212, Jul. 2002.
76.	林夏樹, Takuo Yamagami and Jing-Cai Jiang : Experimental Study on Strength Anisotropy of Compacted Soil, 社団法人地盤工学会四国支部平成13年度技術研究発表会講演概要集, 65-66, Nov. 2001.
77.	根無孝之, Takuo Yamagami and Jing-Cai Jiang : Back analysis of strength parameters of natural ground based on borehole test, 社団法人地盤工学会四国支部平成13年度技術研究発表会講演概要集, 53-54, Nov. 2001.
78.	能野一美, Takuo Yamagami and Jing-Cai Jiang : The study on numerical simulation of rockfall, 第36回地盤工学研究発表会平成13年度発表講演集, 2509-2510, Jun. 2001.
79.	Jing-Cai Jiang, Takuo Yamagami and 金子功 : Back analysis of strength parameters from slope failure with a weak layer, 第36回地盤工学研究発表会平成13年度発表講演集, 2461-2462, Jun. 2001.
80.	山部哲, Takuo Yamagami and Jing-Cai Jiang : Progressive failure analysis of reinforced slopes, 第36回地盤工学研究発表会平成13年度発表講演集, 2457-2458, Jun. 2001.
81.	秋永康彦, Takuo Yamagami and Jing-Cai Jiang : Evaluation of seismic permanent displacements based on variable critical slip surfaces, 第36回地盤工学研究発表会平成13年度発表講演集, 2307-2308, Jun. 2001.
82.	岡田雅寿, Yukimasa Kanda, Takuo Yamagami and Jing-Cai Jiang : Prediction method of earthquake-induced landslides in a wide area and its application, 第36回地盤工学研究発表会平成13年度発表講演集, 2283-2284, Jun. 2001.
83.	能野一美, Takuo Yamagami and Jing-Cai Jiang : The study on numerical simulation of rockfall, 社団法人地盤工学会四国支部平成12年度技術研究発表会講演概要集, 59-60, Sep. 2000.
84.	根無孝之, 馮鉄群, Takuo Yamagami and Jing-Cai Jiang : A back analysis for MC-DP model parameters in cut slope, 社団法人地盤工学会四国支部平成12年度技術研究発表会講演概要集, 43-44, Sep. 2000.
85.	Jing-Cai Jiang, Takuo Yamagami and R. Baker : Search for 3-D critical slip surface based on a nonlinear strength envelope, 第35回地盤工学研究発表会平成12年度発表講演集, 2313-2314, Jun. 2000.
86.	Jing-Cai Jiang and Takuo Yamagami : Search for 2-D and 3-D critical slip surfaces based on a nonlinear strength envelope, 平成11年度技術研究発表会発表論文集，社団法人地盤工学会四国支部, 37-38, Sep. 1999.
87.	Jing-Cai Jiang, Takuo Yamagami and 佐々木守 : Back Analysis of Unsaturated Soil Strength Parameters based on the 3-D Simplified Janbu Method, 第34回地盤工学研究発表会平成11年度発表講演集, 2127-2128, Jul. 1999.
88.	佐々木守, Jing-Cai Jiang and Takuo Yamagami : Back Analysis Method for Unsaturated Soil Strength Parameters based on the 3D Simplified Method, 平成10年度技術研究発表会講演概要集，社団法人地盤工学会四国支部, 47-48, Nov. 1998.
89.	西田憲司, Takuo Yamagami and Jing-Cai Jiang : 数値解析による排水ボーリング効果の定量的評価法, 日本地下水学会1999年秋期講演会講演要旨集, Oct. 1998.
90.	Jing-Cai Jiang and Takuo Yamagami : 簡易Janbu法による不飽和強度定数の逆算法, 土木学会第53回年次学術講演会講演概要集, 482-483, Oct. 1998. (Keyword) 地すべり / 極限平衡法 / 不飽和土 / 強度定数 / 逆解析 / 臨界すべり面 / 非円形すべり面
91.	Jing-Cai Jiang and Takuo Yamagami : A New Back Analysis Method for Unsaturated Soil Strength Parameters, 第33回地盤工学研究発表会平成10年度発表講演集, 1713-1714, Jul. 1998.
92.	佐々木守, Takuo Yamagami and Jing-Cai Jiang : 三次元簡易Janbu法による不飽和強度定数の逆解析法, 平成10年度土木学会四国支部第4回技術研究発表会講演概要集, 214-215, May 1998.
93.	Takuo Yamagami and Jing-Cai Jiang : Three-Dimensional Bearing Capacity Analysis Using a Column Method, 平成9年度技術研究発表会講演概要集，社団法人地盤工学会四国支部, 7-8, Nov. 1997.
94.	Takuo Yamagami and Jing-Cai Jiang : Determination of the Sliding Direction in Three-Dimensional Slope Stability Analysis, 第31回土質工学研究発表会平成8年度発表講演集, 2011-2012, Jul. 1996.
95.	Takuo Yamagami and Jing-Cai Jiang : Determination of the Sliding Direction in Three-Dimensional Slope Stability Analysis, 平成7年度技術·研究発表会発表論文集，社団法人地盤工学会四国支部, 9-10, Nov. 1995.
96.	Takuo Yamagami and Jing-Cai Jiang : A Comparison of the minimal factors of safety obtained by DP with Those of Other Methods, 第30回土質工学研究発表会平成7年度発表講演集, 1797-1798, Jul. 1995.
97.	Takuo Yamagami and Jing-Cai Jiang : 三次元臨界すべり面探索について, 土木学会第49回年次学術講演会講演概要集, 866-867, Sep. 1994.
98.	Takuo Yamagami and Jing-Cai Jiang : A search for the three dimensional critical slop surface, 第29回土質工学研究発表会平成6年度発表講演集, 1831-1832, Jun. 1994.

Et cetera, Workshop:

1.	Jing-Cai Jiang : Past, present and future of slope disaster reduction in Japan, 中国上海同済大学土木工程学院地下建築与工程系, Jun. 2009.
2.	Jing-Cai Jiang : 2004年新潟県中越地震被災地への広域斜面崩壊予測法の適用, 日本地すべり学会地震地すべりプロジェクト第2分科会第2回委員会, Jun. 2009.
3.	Jing-Cai Jiang and Takuo Yamagami : 均質破壊斜面における強度定数の逆算図表, 土木学会四国支部，社団法人地盤工学会四国支部平成16年度学術講演会テキスト, 29-41, Mar. 2005. (Summary) 本研究はまず間隙水圧分布が与えられた均質斜面において，極限平衡法の安全率算定理論による臨界すべり面の位置はその斜面の粘着力と内部摩擦角の正接との比にのみ依存することを示した．次いで斜面を二つのタイプにモデル化した後，すべり面の最大深さを介して二つの無次元パラメータを導入し，これらパラメータと斜面勾配および間隙水圧係数の関係を規定する図表を作成した．斜面勾配，間隙水圧係数，土の体積重量およびすべり面の最大深さが与えられれば，この図表によりすべり面に沿う一組の強度定数(c, φ)を唯一かつ合理的に推定(逆算)することができる．作成した逆算図表を幾つかの事例に適用したところ，精度的に十分満足できる解が得られた．
4.	Jing-Cai Jiang and Takuo Yamagami : 非均質な地すべり地山強度の逆解析法とその平成16年台風10号被災地への一適用事例, 土木学会四国支部，社団法人地盤工学会四国支部平成16年度学術講演会テキスト, 21-28, Mar. 2005.

Report:

1.	Jing-Cai Jiang, Susumu Nakano, Katsutoshi Ueno and Takeshi Okabe : Field reconnaissance report on the geo-disaster caused by the Iwate-Miyagi Nairiku Earthquake in 2008, 平成20(2008)年岩手・宮城内陸地震被害に関する緊急調査研究報告書, Aug. 2009.
2.	Jing-Cai Jiang and Takuo Yamagami : 堤体法先近傍に矢板壁を有する河川堤防の地震時安定性評価法に関する提案, 平成20年度河川整備基金助成事業報告書, 1-22, Jun. 2009.
3.	Jing-Cai Jiang, Yukimasa Kanda and Kazuyoshi Yokino : 平成18年度NEXCO西日本四国支社管内耐震性評価手法検討業務報告書，3.斜面の耐震性評価に関する検討 3.5.1 Newmark法にからの知見, 平成18年度NEXCO西日本四国支社管内耐震性評価手法検討業務報告書, Mar. 2007.
4.	Jing-Cai Jiang and Tie-Qun Feng : 2.2(3) FEMによるアンカー工解析のメリット, 地すべり解析における有限要素法の利用に関する研究委員会報告書, 77-79, Mar. 2006.
5.	Jing-Cai Jiang, Tie-Qun Feng and Akihiko Wakai : 2.1(3) FEMによる杭工解析のメリットと留意点, 地すべり解析における有限要素法の利用に関する研究委員会報告書, 53-56, Mar. 2006.
6.	Jing-Cai Jiang, Yukimasa Kanda and Kazuyoshi Yokino : 平成17年度四国支社管内耐震性評価手法検討業務報告書，3.斜面の耐震性評価に関する検討3.7解析的方法による検討, 平成17年度四国支社管内耐震性評価手法検討業務報告書, 3-126-3-150, Mar. 2006. (Summary) ニューマーク(Newmark)法とGISに基づく地震時広域斜面崩壊予測法を開発し，高知自動車道南国IC西の領石地区で選定したモデル斜面を対象として次回の南海地震を想定した場合の(自然)斜面危険度予測を試みた．ここでは，地震時斜面安定解析法の現況を概観すると共に，開発した地震時広域斜面崩壊予測法の概要を紹介し，領石地区切土法面の背後にある自然斜面に適用した結果を報告する．地震時広域斜面崩壊危険度を評価する解析的方法は，斜面安定性を定量評価することによって崩壊発生危険箇所を予測しようとするものであり，震度法に基づく方法とNewmark法(残留変位)に基づく方法に大別できる．前者は対象地域の地盤特性を考慮しているが，地震動特性を的確に反映することができない．後者は地形・地質・土質条件のみならず，襲来が予想される地震動特性も的確に取り込むことによって，地震時斜面崩壊危険箇所を精度よく特定することが期待される．解析的手法は対象領域の地質・地形の詳細な情報や斜面物質の強度定数等を明らかにしてはじめてその威力を発揮するものである．しかし現実問題として地質の複雑さや地盤の不均質性などに起因して，広い領域に渡っての詳細な地質・地形データおよび地盤物性値を十分な精度で取得することが大変困難である．したがって広い範囲内の斜面危険度評価を行うにあたっては，こうした実際上の制約を十分認識し，用いられる現地データの質と量を留意しながら解析的手法による予測結果を利用すべきである．
7.	Jing-Cai Jiang, Yukimasa Kanda and Kazuyoshi Yokino : 斜面の耐震性評価に関する検討:過去の地震による被害事例の整理(1995年兵庫県南部地震), 平成16年度JH四国支社管内耐震性評価手法検討業務報告書, Mar. 2005.
8.	Jing-Cai Jiang and Takuo Yamagami : 平成16年台風10号による土砂災害の概要と一被災地への地すべり地山強度逆解析法の適用, 平成16年台風災害に関する学術調査徳島大学教育研究プロジェクト推進費調査成果報告書, 15-22, Mar. 2005.
9.	Jing-Cai Jiang and Takuo Yamagami : 5．4 上那賀町白石市宇のフロン谷土石流, 社団法人地盤工学会四国地域豪雨災害緊急調査団報告書, 2005.

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

徳島県小松島沖亀磯を対象とした臨海地盤の崩壊現象の解明と誘発津波の予測 (Project/Area Number: 23K23010 )
Mechanism of germination of underground cavities and its influence on pavement (Project/Area Number: 11450182 )
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Professor : Jiang, Jing-Cai

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Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)