Effects of shear strength reduction strategies on safety factor of homogeneous slope based on a general nonlinear failure criterion

被引：58

作者：

Zhao, Lianheng ^{[1
]}

Yang, Feng ^{[1
]}

Zhang, Yingbin ^{[2
]}

Dan, Hancheng ^{[1
]}

Liu, Weizheng ^{[1
]}

机构：

[1] Cent S Univ, Sch Civil Engn, Changsha 410075, Hunan, Peoples R China

[2] Southwest Jiaotong Univ, Sch Civil Engn, Dept Geotechn Engn, Chengdu 610031, Peoples R China

来源：

COMPUTERS AND GEOTECHNICS | 2015年 / 63卷

基金：

中国国家自然科学基金;

关键词：

Homogeneous slope; Safety factor; Nonlinear failure criterion; Upper bound limit analysis; SSRS; Tangential technique; FINITE-ELEMENT-ANALYSIS; STABILITY ANALYSIS; SEISMIC DESIGN; ENVELOPES;

D O I：

10.1016/j.compgeo.2014.08.015

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Safety factor of slope is often calculated based on the conventional linear Mohr-Coulomb failure criterion. However, many experimental results show that the strength envelopes of almost all of geomaterials are characteristically nonlinear. This paper presents a method (upper bound limit analysis method) to analyze the stability of a homogeneous slope based on a general nonlinear failure criterion, in which different shear strength reduction strategies (SSRS) can be used. Based on the presented method, three SSRSs (i.e. by factoring the unconfined shear strength c(0) only, by factoring the tensile strength sigma(t) only, by factoring both the unconfined shear strength c(0) and the tensile strength sigma(t)) are used to calculate the safety factors of a homogeneous slope under a general nonlinear failure criterion. Compared results show different SSRSs have significant influence on the calculated safety factor. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：215 / 228

页数：14

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