中文摘要：

本文用概率模型考虑结构体系抗力不确定性的主要影响因素,用凸集模型考虑地震作用的不确定性,采用能力谱方法,分别求得了结构抗力的概率分布参数及地震作用效应的区间范围,通过二级功能方程方法求得了结构体系抗震可靠度。算例给出了本文方法的计算结果,并与经典概率可靠度进行了对比,表明本文方法是一种简便、合理的结构体系抗震可靠性分析方法。

英文摘要：

In this paper,based on capacity spectrum method,the probability distribution parameters of structural resistance and the intervals of earthquake effects are calculated with the structural resistance uncertainty quantified by probability model and the earthquake effects uncertainty quantified by convex model.Then,the earthquake-resistant system reliability is calculated by two-stage functional equation methods.A numerical example results show that,compared with the results from the classic probabilistic reliability,the proposed method is a simple,reasonable structural reliability analysis method.