岩土工程学报2016，Vol.38Issue(6)：1004-1013,10.DOI:10.11779/CJGE201606005
基于极限平衡法和有限元法的边坡协同式可靠度分析
Auxiliary slope reliability analysis using limit equilibrium method and finite element method
摘要
Abstract
The limit equilibrium method (LEM) and the finite element method (FEM) are two commonly-used slope stability analysis methods. The LEM-based slope reliability analysis is computationally efficient based on the prescribed slip surfaces, while the FEM-based one tends to give more realistic reliability estimates. A new simulation-based reliability method, namely auxiliary slope reliability analysis method, is developed, which includes two major steps (preliminary and target reliability analyses) and makes use of advantages of both LEM and FEM to achieve efficient and consistent slope reliability analysis. A two-layered slope example considering spatial variability is illustrated using the proposed method. The results indicate that the proposed method gives reliability estimates consistent with those obtained by the Monte Carlo simulation or subset simulation based on FEM, and it also significantly reduces the computational efforts at small probability levels. This enhances the application of FEM-based reliability analysis in slope engineering practice. The information generated in the LEM-based reliability analysis can be properly incorporated into the FEM-based reliability analysis, through which a large amount of failure samples can be obtained and used for making slope remedy measures. In addition, the proposed method is very practicable for high-dimensional reliability problems, such as slope reliability problem considering spatial variability.关键词
边坡可靠度分析/空间变异性/极限平衡法/有限元法/子集模拟/响应调节法Key words
slope reliability analysis/spatial variability/limit equilibrium method/finite element method/subset simulation/response conditioning method分类
建筑与水利引用本文复制引用
李典庆,肖特,曹子君,唐小松,方国光..基于极限平衡法和有限元法的边坡协同式可靠度分析[J].岩土工程学报,2016,38(6):1004-1013,10.基金项目
国家杰出青年科学基金项目（51225903）；湖北省自然科学基金创新群体项目（2014CFA001）；国家自然科学基金项目（51409196，51579190，51528901）；国家重点基础研究发展计划（“973”计划）项目 （）
