基于非线性动力的有限元强度折减法边坡稳定性分析

以金安桥水电站枢纽区堆积体边坡为研究对象，基于非线性动力响应分析理论及有限元强度折减法理论，考虑地震工况下边坡的动力响应，采用有限元强度折减法，计算天然边坡蓄水前后的边坡稳定安全系数，获得边坡临界滑动时的塑性区分析，确定边坡失稳类型并对边坡的稳定性进行评价，提出合理的边坡处治措施。

Analysis on Slope Stability by Strength Reduction FEM Based on Nonlinear Dynamic

Taking the deposits slope in the nodal region of Jin＇anqiao Hydropower Station as the study object, on the basis of nonlinear dynamic response analysis and strength reduction FEM, the dynamic response of slope in case of earthquake is considered; by strength reduction FEM, the stability safety coefficients of natural slope before and after ponding are calculated so as to obtain the plastic-zone analysis in critical slip of the slope, confirm the failure type, assess the slope stability, and propose the rational treating measures.