基于强度折减法考虑三维地震作用的边坡稳定分析

Stability analysis of a slope considering multi-dimensional earthquake based on strength reduction method

基于有限元ABAQUS软件对某边坡进行静力分析和地震时程分析。结果表明:二维与三维边坡模型在静力荷载作用下边坡稳定安全系数相同;一维地震作用下,三维边坡模型的地震响应大于二维边坡模型;考虑三维地震作用的边坡稳定安全系数比考虑一维地震作用的更低,应考虑三维地震作用对边坡稳定性的影响。

Based on ABAQUS software,the safety and stability of slope is analyzed,results are as follow:the two-dimensional slope safety factor is same as the three-dimensional slope safety factor under gravity load;under one-dimensional ground motion,the seismic response of three-dimensional slope is larger than that of two-dimensional slope;the slope safety factor considering three-dimensional earthquake is lower than that considering one-dimensional earthquake.So this study suggests that three-dimensional earthquake should be considering in seismic response analysis of three-dimensional slope.