基于随机元重力坝动力荷载法动力可靠度分析

Stochastic Dynamic Finite Element for Dynamic Reliability Analysis of Concrete Gravity Dams by Dynamic Loading Method

根据《水工建筑物抗震设计规范》ＳＤＪ１０－７８，提出一种计算混凝土重力坝动力可靠度的动力荷载法，阐述了混凝土重力坝动力可靠度分析的基本原理。通过实例计算，对条件慨率可靠指标与全概率可靠指标进行了比较。动力荷载法为混凝土重力坝抗震动力可靠度分析提供了新的思路，它是传统规范方法和现代有限元方法的统一，便于在工程界推广应用。

ased on“Seismic Design Standard for Hydraulic Engineering Structures”SDJ10- 78,a dynamic loading method is presented for calculating the seismic reliabilitv of a aoncrete dam. The fundamental principle is explained and two results,which are expressed by total probability and conditional probability respectively,are compared through an example.The method gives a new train of tlioughts for the analysis of seismic dynamic reliability,and integates the traditional standard method with the finite element method, thus,it can be popularized in eilgineering.