降雨条件下二维边坡稳定可靠性分析
Reliability analysis of two-dimensional slope stability under rainfall conditions

大多数滑坡都发生在降雨期间或降雨之后。基于有限元方法与传统的极限平衡法相结合的滑面应力法进行二维边坡稳定性分析，研究了降雨强度、持时和雨型对边坡稳定性的影响。并以可靠性理论为基础，研究了土体抗剪强度不确定性对降雨条件下边坡稳定性的影响。分析结果与重庆地区的降雨滑坡的案例统计分析规律一致。
Most of the landslides have been observed occurring during or after rainfall. In this paper, the slip-surface stress method, a combination of FEM and traditional limit equilibrium method, is applied for the 2-D slope stability analysis. The effects of the rainfall intensity, duration time and rain types on the slope stability are analyzed, and the reliability based slope stability is studied considering the uncertainty of soil shear strength for slope stability under rainfall. The analyzing results are consistent with the characteristics of statistic results of the rainfall-caused landslide cases in Chongqing area