铁道标准设计2016，Vol.60Issue(7)：38-42,43,6.DOI:10.13238/j.issn.1004-2954.2016.07.009
有限元极限平衡法在黄土边坡稳定性分析中的应用探讨
Application of Finite Element Limit Equilibrium Method in Stability Analysis of Loess Slope
摘要
Abstract
The limit equilibrium and finite element methods for slope stability analysis are analyzed. On the basic of it, the limit equilibrium method based on the finite element stress field is analyzed by using GeoStudio software with reference to the engineering calculation of loess slope. The example analysis results show that the limit equilibrium method in solving process has made various assumptions to solve the statically indeterminate problem; the finite element method can overcome the deficiency of the limit equilibrium method in consideration of the constitutive relationship, but can not determine potential rupture surface. There is no quantitative criterion for judging the failure of slope. The combination of the finite element method with the limit equilibrium method can not only reflect the relationship between slope stability and deformation but also accurately depict the failure surface features with more accurate and reliable safety factor. The limit equilibrium method based on the finite element stress field can automatically search for the combined sliding surface with vertical cracks on the slope shoulder, which is much closer to the actual situation than the single arc sliding surface obtained with the limit equilibrium method. Thus the rationality of the slope stability analysis is improved to provide references for similar slope stability analysis.关键词
黄土边坡/极限平衡法/有限元/稳定性分析/裂缝Key words
Loess slope/Limit equilibrium method/Finite element method/Stability analysis/Cracks分类
交通工程引用本文复制引用
王月,叶朝良..有限元极限平衡法在黄土边坡稳定性分析中的应用探讨[J].铁道标准设计,2016,60(7):38-42,43,6.基金项目
国家自然基金项目(50978172) （50978172）
铁道部科技研究开发计划项目(2010G018-B-4) （2010G018-B-4）
