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随机过程激励下随机结构系统可靠度分析的一种方法
引用本文:王元战,周晶.随机过程激励下随机结构系统可靠度分析的一种方法[J].固体力学学报,1998,19(2):106-111.
作者姓名:王元战  周晶
作者单位:天津大学建筑工程学院
基金项目:天津大学优秀中青年教师基金
摘    要:提出了随机过程荷载激励下,具有随机参数的结构系统可靠度分析的一种方法,该方法基于首次超越破坏机制,分析随机过程荷载激励下,结构参数(随机变量)取某一确定向量时的条件失效概率,采用Monte Carlo技术模拟结构参数的随机性,由条件失效概率给出随机结构的无条件失效概率,最后对中方法和程序作了检验,并进行了实际计算。

关 键 词:随机过程荷载  随机结构系统  可靠度分析

AN APPROACH TO RELIABILITY OF UNCERTAIN STRUCTURES TO STOCHASTIC PROCESS EXCITATION
Wang Yuanzhan,Zhou Jing,Zhou Xireng.AN APPROACH TO RELIABILITY OF UNCERTAIN STRUCTURES TO STOCHASTIC PROCESS EXCITATION[J].Acta Mechnica Solida Sinica,1998,19(2):106-111.
Authors:Wang Yuanzhan  Zhou Jing  Zhou Xireng
Abstract:An approach to the reliability of structural systems with uncertain parameters subjected to stochastic process excitation is presented. A formulation as a first passage problem for a vector process outcrossing a safe set is first applied for a fixed value of the random variable vector constituted by the uncertain parameters of the structural system. This gives a conditional failure probability, and a integration technique based on Monte Carlo simulation is then used to compute the unconditional failure probability. As an example, the approach is applied to the reliability analysis of a gravity pier under stochastic earthquake excitation.
Keywords:stochastic  process  excitation    uncertain  structure    first  passage  failure    Monte  Carlo  simulation  
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