工程结构地震破坏概率矩阵分析

Analysis of seismic damage probability matrices of engineering structures

本文提出了一种计算工程结构地震破坏概率矩阵的方法．建立了地震地面运动模型和结构分析模型，对结构进行了随机地震反应分析，并获得了结构随机反应的统计量．进而采用双参数的结构破坏模型，给出了计算结构地震破坏概率的表达式。利用此方法计算了一座按８度要求设计的钢筋混凝土框架结构的地震破坏概率矩阵．本文提出的方法可以在确定抗震设防标准和进行震害预测时采用．

A method for calculating seismic damage probability matrices of engineering structures is put forward. The earthquake ground motion model and the structural analysis model are set up, the stochastic seismic response analysis of structure is performed, and the statistics of stochastic response of structure are gained. Moreover, by adopting a structural damage model with double parameters, the formula for calculating structural earthquake damage probability is given. By making use of this method, the earthquake damage probability matrix of a reinforced concrete frame structure which meets the demands of & degree is computed. This method can be used for determining earthquake-resistant fortification standards and for predicting structural damage.