随机时变抗风结构动力可靠性分析

Random Time Dependent Dynamic Reliability of Structure under the Action of Wind Load

研究了随机时变结构特性，提出了随机时变强度的衰减表达式；在随机动力荷载作用下，用振型分解法分析了时变参数结构的动力响应，得到了此类结构的动力响应谱与数字统计式；给出了确定时变界限的方法；在若干基本假设下，得到了时变结构的可靠度计算公式；提出了在役结构时变可靠度的分析方法。

In this paper the characteristic of random time dependent structure is studied, and the decline formula of stochastic process strenth is proposed. In the effect of dynamic load the dynamic response of stochastic coefficient structure is analyzed by vibration mould decomposed. The dynamic response spectrum and statistic formula are obtained. The time dependent boundary function is determined. Under some basic assumptions, the reliability formula of time dependent structure is gained. Also the reliability analysis method of servicing structure, and the evaluation formula both in designing period and estimating period are given.