不同烈度区砌体结构震害调研及易损性分析  

Seismic damage investigation and vulnerability analysis of masonry structures in different intensity zones

作　　者：李思齐 于天来[1] 张明[2] LI Siqi;YU Tianlai;ZHANG Ming(School of Civil Engineering,Northeast Forestry University,Harbin 150040,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 614202,China)

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040 [2]西南交通大学土木工程学院,四川成都614202

出　　处：《中山大学学报（自然科学版）》2020年第2期77-85,共9页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金(51608452);中国博士后科学基金面上项目(2017M621594)。

摘　　要：对汶川地震中都江堰3991栋砌体结构震害情况进行了分析,以了解不同烈度区砌体结构的震害特征及其抗震能力。首先,对都江堰砌体结构震害情况进行调研,结果表明该类结构体系易于破坏的位置为:纵、横墙体、开洞处、纵横墙接缝处、窗间(下)墙及构造柱破坏;而,大量经过抗震设计的砌体结构基本完好。采用数值统计分析方法对调查数据进行分析,给出了样本与震损等级的关系以及易损性矩阵;建立了多烈度区内不同烈度等级下的震损等级与易损性的非线性模型。This paper analyses the seismic damage of 3991 masonry structures in Dujiangyan during Wenchuan earthquake,to understand the seismic damage characteristics and seismic capacity of masonry structures in different intensity regions.Firstly,seismic damage of Dujiangyan masonry structure is observed.The results display that the location of this kind of structure system is easy to be damaged:vertical and horizontal walls,openings,joints of vertical and horizontal walls,window(lower)walls and tie columns;However,a large number of masonry structures are basically intact after seismic design.Using the method of numerical statistical analysis to analyze the survey data,the relationship between the sample and the seismic damage grade and the vulnerability matrix are given,and the nonlinear model of the seismic damage grade and vulnerability under different intensity grades in the multi intensity region is established.Considering the seismic damage of the structure under the influence of seismic fortification factors,the general law of seismic damage index and intensity of the structure in multi-intensity region is analyzed by regression curve.The results can be used for reference in the revision of intensity scale and vulnerability analysis.

关 键 词：砌体结构 震害调查分析 地震烈度 易损性矩阵 震害指数 震损等级 

分 类 号：TU352[建筑科学—结构工程]