一种适于震后快速评估的群体易损性分析方法

本文提出了一种适用于震后快速评估的群体易损性分析方法,将模糊数学中的熵权法确定权重和相似理论引入到群体易损性分析中,可快速准确地评估出群体建筑物的震害情况。本方法不需要详细调查城市所有房屋的结构力学参数,所采用的影响结构抗震能力的主要因素从房屋普查资料中即可获得,可作为将来震后快速评估系统的重要组成部分。同时,本方法还可以得到群体易损性曲线,可应用于预测城市震害、估计城市的综合抗震能力。本文以城镇中量大、面广的砌体结构为例,详细介绍了该方法的研究过程。最后,用算例证明了本方法的准确性和实用性。

A Fast Approach of Group Vulnerability Evaluation for Post-Earthquake

This paper puts forward a new fast approach of group vulnerability evaluation for post-earthquake. Impersonal weight determination by entropy method and similarity theory in fuzzy mathematics is introduced in group vulnerability analysis, which can evaluate earthquake disaster of group structures rapidly and reliably. This method does not require investigating the detailed mechanical parameters of all structures in city. The main factors related with seismic capacity of structure can obtain from building survey data. The proposed approach may be used for fast loss evaluation after earthquakes. Meanwhile vulnerability curves are also acquired which can estimate the comprehensive seismic capacity of city in seismic damage prediction. A case study of the masonry is introduced following this new method and the result shows its accuracy and practicality.