基于能力谱的概率-非概率结构体系抗震可靠度  

Probabilistic & non-probabilistic hybrid seismic reliability of structure system based on capacity spectrum method

作　　者：李浩[1] 王文[1] 易伟建[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《地震工程与工程振动》2012年第1期43-48,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(90815002)

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。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.

关 键 词：能力谱方法 不确定性 凸集模型 非概率抗震可靠度 

分 类 号：TU312[建筑科学—结构工程] P315.92[天文地球—地震学]