Stability analysis for natural slope by kinematical approach  

作　　者：孙志彬 覃长兵 

机构地区：[1]School of Civil Engineering, Central South University

出　　处：《Journal of Central South University》2014年第4期1546-1553,共8页中南大学学报（英文版）

基　　金：Project(2013CB036004)supported by the National Basic Research Program of China;Project(51178468)supported by the National Natural Science Foundation of China

摘　　要：The stability of natural slope was analyzed on the basis of limit analysis. The sliding model of a kind of natural slope was presented. A new kinematically admissible velocity field for the new sliding model was constructed. The stability factor formulation by the upper bound theorem leads to a classical nonlinear programming problem, when the external work rate and internal energy dissipation were solved, and the constraint condition of the programming problem was given. The upper bound optimization problem can be solved efficiently by applying a nonlinear SQP algorithm, and stability factor was obtained, which agrees well with previous achievements.The stability of natural slope was analyzed on the basis of limit analysis. The sliding model of a kind of natural slope was presented. A new kinematically admissible velocity field for the new sliding model was constructed. The stability factor formulation by the upper bound theorem leads to a classical nonlinear programming problem, when the external work rate and internal energy dissipation were solved, and the constraint condition of the programming problem was given. The upper bound optimization problem can be solved efficiently by applying a nonlinear SQP algorithm, and stability factor was obtained, which agrees well with previous achievements.

关 键 词：natural slope stability analysis limit analysis upper bound theorem 

分 类 号：P642.2[天文地球—工程地质学]