Efficient Method for Calculating Slope Failure Risk Based on Element Failure Probability

The finite element method (FEM) and the limit equilibrium (LEM) are commonly used for calculating slope failure risk. However, FEM needs to carry out post-processing estimate sliding surface, while LEM requires assumption of shape location surface in advance. In this paper, an risk (EFR) soil is proposed based on probability (EFP) acquired by plastic analysis. does not require any assumptions about modes. Firstly, non-common-node triangle discrete then random field generated Cholesky decomposition midpoint method. According reliability stochastic programming model solution strategy, external overload coefficient, bulk stability coefficient velocity under each obtained, according which judged calculated. order verify correctness method, two classical slopes systematically analyzed. research shows that compared with traditional analysis greatest advantage it can capture all modes greatly simplify calculation consequences mode. An efficient upper bound (UBM) parallel program prepared, improves efficiency.