Three-dimensional limit equilibrium method for asymmetrical slope stability analysis

被引：0
|
作者：
Gao Y. [1 ,2 ]
Wan Y. [1 ,3 ]
Zhang F. [1 ,2 ]
机构：
[1] Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing
[2] Geotechnical Research Institute of Hohai University, Nanjing
[3] School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan
来源：
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2022年 / 52卷 / 12期
关键词：
asymmetrical slope; direction of sliding; landslides; limit equilibrium; three-dimensional analysis;
D O I：
10.1360/SST-2021-0292
中图分类号：
学科分类号：
摘要：
A formula is proposed to calculate the DOS of 3D slopes based on the limit equilibrium theory. By combining the one-direction method with the proposed computational formula of DOS, a three-dimensional method for asymmetrical slope stability analysis based on one-direction force or/and moment equilibrium is proposed. The proposed method can compute both the factor of safety and the DOS of asymmetrical problems. As a result, the one-direction method’s potentially overestimated safety factors due to assumed DOS can be eliminated. Examples under static and pseudo-static forces are used to validate the proposed method’s logic and the algorithm’s astringency. The practical engineering examples further demonstrate the proposed method’s engineering applicability. The proposed method, with its simple principle and reliable results, can be widely used in slope design and landside treatment. © 2022 Chinese Academy of Sciences. All rights reserved.
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页码：1819 / 1830
页数：11
相关论文
共 32 条
  • [1] Chen Z Y, Mi H L, Wang X G., A three-dimensional limit equilibrium method for slope stability analysis (in Chinese), Chin J Geotech Eng, 23, pp. 525-529, (2001)
  • [2] Hungr O., An extension of Bishop’s simplified method of slope stability analysis to three dimensions, Géotechnique, 37, pp. 113-117, (1987)
  • [3] Baligh M M, Azzouz A S., End effects on stability of cohesive slopes, J Geotech Engrg Div, 101, pp. 1105-1117, (1975)
  • [4] Hovland H J., Three-dimensional slope stability analysis method, J Geotech Engrg Div, 103, pp. 971-986, (1977)
  • [5] Chen R H, Chameau J L., Three-dimensional limit equilibrium analysis of slopes, Géotechnique, 33, pp. 31-40, (1983)
  • [6] Xing Z., Three-dimensional stability analysis of concave slopes in plan view, J Geotech Eng, 114, pp. 658-671, (1988)
  • [7] Hungr O, Salgado F M, Byrne P M., Evaluation of a three-dimensional method of slope stability analysis, Can Geotech J, 26, pp. 679-686, (1989)
  • [8] Lam L, Fredlund D G., A general limit equilibrium model for three-dimensional slope stability analysis, Can Geotech J, 30, pp. 905-919, (1993)
  • [9] Feng S R, Feng D X, Ge X R, Et al., 3D limit equilibrium method for slope stability and its application (in Chinese), Chin J Geotech Eng, 21, pp. 657-661, (1999)
  • [10] Chen Z, Mi H, Zhang F, Et al., A simplified method for 3D slope stability analysis, Can Geotech J, 40, pp. 675-683, (2003)
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