Stability analysis for natural slope by kinematical approach
来源期刊：中南大学学报(英文版)2014年第4期
论文作者：SUN Zhi-bin(孙志彬) QIN Chang-bing(覃长兵)
文章页码：1546 - 1553
Key words：natural slope; stability analysis; limit analysis; upper bound theorem
Abstract: 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.
SUN Zhi-bin(孙志彬), QIN Chang-bing(覃长兵)
(School of Civil Engineering, Central South University, Changsha 410075, China)
Abstract: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.
Key words:natural slope; stability analysis; limit analysis; upper bound theorem
