【摘要】 提出了考虑材料参数随机性的重力式挡墙在地震作用下动力可靠度的研究方法.根据静力可靠度的计算方法,参照静力下功能函数模式,建立了随机参数下重力式挡墙的动力可靠度功能函数;引入响应面法,对功能函数进行拟合,得到极限状态方程;用JC法求解可靠指标.算例分析验证了上述方法具有较高的计算精度和效率,在边坡支护的动力可靠度分析中有广阔的应用前景.更多还原

【Abstract】 The method for dynamic reliability analysis of retaining wall is presented with random parameter subjected to seismic activity.Firstly,based on the reliability of static calculation method and the performance function of static models,the performance function of dynamic reliability is established.Then,the sequential surface response method is used to fit for the performance function,so the limit state equation is established.Finally,the reliability index is obtained through JC method.An example shows that the method has a high accuracy and efficiency.It has a wide prospect of application especially in dynamic reliability analysis of complex slope and foundation pit support engineering.更多还原