Stability analysis of slopes using the vector sum numerical manifold method

被引：47
|
作者：
Yang, Yongtao [1 ]
Wu, Wenan [1 ,2 ]
Zheng, Hong [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
来源：
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT | 2021年 / 80卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Numerical manifold method (NMM); Vector sum method (VSM); Strength reduction method; Slope stability; FRACTURE PROPAGATION; GENERATION;
D O I：
10.1007/s10064-020-01903-x
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The NMM (numerical manifold method) has shown its ability to solve continuum and discontinuum engineering problems in the same framework. In the present paper, the vector sum NMM (VSNMM) is proposed to investigate the stability of slopes. With the (vector sum numerical manifold method) VSNMM, the FOSs (factors of safety) of slopes are obtained using the real stress fields of the slopes. Compared with the limit equilibrium methods, the deformation and stress field of a slope can be obtained using the VSNMM. Besides, the computational cost of the VSNMM is much less than that of the strength reduction numerical manifold method (SRNMM), since only one elasto-plastic analysis is needed in the VSNMM, while a series of elasto-plastic analyses is needed in the SRNMM. Based on the VSNMM, the stability analyses of two slopes including a homogeneous slope and an inhomogeneous slope with three different materials are conducted. The numerical results based on the two slopes show that the VSNMM can accurately calculate the FOSs of the slopes.
引用
收藏
页码：345 / 352
页数：8
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