结构分析中常遇到结构体内含有未知缺陷等情况，用常规的可靠性计算方法无法对结构进行正确的可靠性分析。本文利用随机边界元法与非线性优化技术相结合，根据弹性体内或边界上的位移、应力等附加信息，建立了结构可靠性预测的边界元逆分析法的基本模型，算例证明了该理论的有效性 Structure analysis often encountered in the structure containing unknown defects, etc., with the conventional method of calculating the reliability of the structure can not be the correct reliability analysis. In this paper, by using the combination of stochastic boundary element method and nonlinear optimization technique, the basic model of BEM for the structural reliability prediction is established based on the additional information such as displacement and stress in the elastic body or the boundary. The example shows that this theory Effectiveness