Prediction of resistance deterioration is an important part of time-dependent reliability analysis of cable-stayed bridge.
分析斜拉桥结构动态可靠度时，目前抗力衰减预测的基本模型经验性都很大，对具体结构并不一定适用。
The concept of time dependent reliability and the calculating model are proposed in this paper. In addition, the durability optimum design method based on reliability analysis is suggested also.
本文引入时变广义可靠度概念并建立相应的计算模式，提出了基于可靠性分析的耐久性优化设计方法。
In this paper the methods of mode analysis and the random time dependent reliability, based on crossing rate, of random time dependent structures are suggested.
本文首先建立了随机时变结构的振型分解法，然后基于随机时变结构的超越率提出了相应的结构随机时变可靠性的计算方法。
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