【摘要】 通过数值计算对受非平稳随机地震作用下的砖石古建筑的动力可靠度进行了分析。首先将随机地震动模型考虑为均匀调制的非平稳随机地震动模型,采用振型叠加法求出随机地震动反应的功率谱密度;然后应用首次超越破坏准则给出了结构随机地震动作用下结构动力可靠度的具体计算公式;最后对砖石古建筑有限元模型的动力可靠度进行了计算,得到了结构在多遇地震和罕遇地震作用下的动力可靠度。文章为复杂结构的动力可靠度分析提供了参考方法。更多还原

【Abstract】 In this paper,the dynamic reliability of masonry historical construction subjected to non-stationary random earthquake is evaluated by numerical method.The stochastic dynamic analysis is performed by using modal superposition method to obtain the power spectral density of random responses.The detail dynamic reliability formulations are developed through the first excursion failure criterion.At last,the dynamic reliability of the masonry historical construction under the effect of frequent earthquake and rare earthquake are deduced.The method in this paper provides reference to the dynamic reliability of complex structures.更多还原