抗地震结构三级设防的可靠性分析

Reliability analysis for three levels of fortification of aseismic structures

提出了抗地震结构的三级工作模式:安全状态、中介状态、失效状态,此模式与抗震结构的三级设防标准(小震不坏,中震可修,大震不倒)在概念上是一致的。根据可靠性向量理论,分别给出了抗震结构三级设防的安全概率PS、中介概率PM和失效概率PF,它们分别是抗震结构小震不坏、中震可修和大震严重破坏(包括倒塌)的概率。

This paper defines the safe, intermediate and fail modes of aseismic structures in line with the criteria for the three levels of fortification of aseismic structures, and establishes the probabilities of damage-free, repairable and severe-damage-free for aseismic structures by following the reliability vector theory.