三维边坡稳定性分析中的边界约束效应

Abstract

Abstract:

Boundary constraint condition is one of the most important influencing factors in 3D stability analysis based on shear strength reduction finite element method(SSR-FEM). A typical three-dimension slope case is adopted to study safty factor and potential sliding surface under various boundary constraint conditions, and their difference is discussed. Then, the results of a 3D slope case with soft interlayer and groundwater are illustrated using SSR-FEM. The results indicates that the boundary constraint conditions have a remarkable effect on the slope stability, the fixed constraint in three directions effect is the largest one, free constraint effect is the smallest one. Moreover, the boundary constraint conditions have also a certain effect on the potential sliding surface of threedimensional slope. The effect is related to the ratio of length and height for the slope. When the ratio of length and height for the slope is larger than 8 (L/H>8), the location of slip surface and out-slip points in 3D slope is very similar to that from 2D plane strain analysis. So the ratio of L/H=8 can be taken as the limit point for 2D and 3D stability analysis in SSR-FEM.

Key words: slope stability, 3D slope, strength reduction finite element method, boundary constraint condition

CLC Number:

P642.2

LIU Hong-shuai, NIAN Ting-kai, WAN Shao-shi. Effect of Boundary Constraint Condition on the Stability Analysis of 3D Slope[J].J4, 2010, 40(3): 638-644.

References

Related Articles 12

[1]	Ouyang Qi, Chen Xin, Wei Runchu, Wu Shimeng, Zhu Zhiyuan. Destabilization Mechanism of Ziquejie Terrace [J]. Journal of Jilin University(Earth Science Edition), 2024, 54(2): 581-591.
[2]	Nian Tingkai, Wang Guodong, Zheng Defeng, Wang Dawei. Seismic Stability of Steep Slope Groups in Typical Canyons of Northern South China Sea [J]. Journal of Jilin University(Earth Science Edition), 2023, 53(6): 1785-1798.
[3]	Zhang Haiqing, Jia Huihui, Nie Qingke. Influence of Soil Tensile Strength on Stability of Homogeneous Slope [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1324-1337.
[4]	Lü Jianhang, Yang Zhongnian, Shi Wei, Li Guoyu, Ling Xianzhang, Zhang Yingying. Model Test of Reinforced Expansive Soil Slope Stability in Freeze-Thaw Cycles [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1587-1596.
[5]	Ma Jianquan, Wang Nianqin, Zhang Xinshe. Analysis on Slope Stability Based on Local Factor of Safety [J]. Journal of Jilin University(Earth Science Edition), 2015, 45(2): 533-540.
[6]	Wang Ke, Wang Changming, Wang Bin, Yao Kang, Wang Tianzuo. Comparative Analysis on Slope Stability Based on Morgenstern-Price Method and Strength Reduction Method [J]. Journal of Jilin University(Earth Science Edition), 2013, 43(3): 902-907.
[7]	Nian Tingkai，Zhang Keli，Liu Hongshuai，Xu Haiyang. Stability and Failure Mechanism of ThreeDimensional Slope Using Strength Reduction Method [J]. Journal of Jilin University(Earth Science Edition), 2013, 43(1): 178-185.
[8]	HE Yu-qiong, XU Ze-min, WANG Zhi-qi, ZHANG Yong. Application of Landslide Rainfall Threshold Model [J]. J4, 2012, 42(4): 1112-1118.
[9]	SHEN Shi-wei, NAI Lei, XU Yan. Two-Stage Fuzzy Comprehensive Evaluation for Rainfall Influence on Slope Stability Under Different Weight Value [J]. J4, 2012, 42(3): 777-784.
[10]	AN Yu-ke, NAI Lei. Key-Block Systematic Method and Application in Reinforcement Unstable Rock on Slope [J]. J4, 2011, 41(3): 764-770.
[11]	YANG Jing，CHEN Jian-ping，WANG Ji-liang. Application of Uniform Design and Grey Theory in Analysis of Slope Stability [J]. J4, 2008, 38(4): 654-0658.
[12]	ZHANG Hao, WANG Chang-ming，MA Wen-dong. Simulated Annealing Algorithm of Global Search for Critical Sliding Surface of Slope and Improvements [J]. J4, 2007, 37(1): 129-0133.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 10

[1]	YU Ping， LI Rui-lei， FU Lei， HAO Xue， ZHANG Xiang-jun，LIAN Guo-fen. Regional Tectonic Characteristics and Significance of North Harbin Area in Songliao Basin: Evidenced from Long Seismic Profiles[J]. J4, 2005, 35(05): 611 -615 .
[2]	ZHANG Yuan-qing, SONG Bing-zhong, WANG Yu-fu, ZHANG Ning. Metallogenetic Rules and Prediction of Gold Deposits Around Tongshi Complex,Western Shandong Province[J]. J4, 2010, 40(6): 1287 -1294 .
[3]	LI Jian-ping, LI Tong-lin, ZHANG Hui, XU Kai-jun. Study and Application of the TEM Forward and Inversion Problem of Irregular Loop Source over the Layered Medium[J]. J4, 2005, 35(06): 790 -0795 .
[4]	GAO Song，SONG Ying，WANG Lin，JIANG Buxin. Study on the Screening and Characterization of Special Effective Bacteria of Degrading Thiuram in the Waterbody[J]. J4, 2006, 36(03): 455 -457 .
[5]	ZHANG Feng-jun, LI Qing, MA Jiu-tong, YU Guang-ju. Experimental Study on Treatment of Furfural Wastewater with Membrane Distillation[J]. J4, 2006, 36(02): 270 -0273 .
[6]	LU Shuang-fang, LI Ji-jun, XUE Hai-tao, XU Li-heng. Chemical Kinetics of Carbon Isotope Fractionation of Oil-Cracking Methane and Its Initial Application[J]. J4, 2006, 36(05): 825 -829 .
[7]	DING Zhi-hong,FENG Ping,MAO Hui-hui. Research and Application of a Method Considering Runoff Distribution Through A Year During Partitioning Runoff into Abundant and Low State[J]. J4, 2009, 39(2): 276 -0280 .
[8]	REN He-jun, LIU Na, GAO Song,ZHANG Lan-ying，ZHANG Yu-ling，ZHOU Rui. Degradation of Polychlorinated Biphenyls and Confirm of bphA1 Gene Core by Pseudomonas DN2[J]. J4, 2009, 39(2): 312 -0316 .
[9]	Huang Qibo, Qin Xiaoqun, Liu Pengyu, Kang Zhiqiang, Tang Pingping. Applicability of Karst Carbon Sinks Calculation Methods in Semi-Arid Climate Environment[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(1): 240 -246 .
[10]	Xiong Xiaoliang，Sun Hongyue，Zhang Shihua，Cai Yueliang. Analysis of Condition of Ensuring High-Lift Siphon Drainage and Numerical Simulation of Choice of Optimum Diameter[J]. Journal of Jilin University(Earth Science Edition), 2014, 44(5): 1595 -1601 .

Effect of Boundary Constraint Condition on the Stability Analysis of 3D Slope