不同烈度区典型结构易损性对比分析  

Comparative Study of the Vulnerability of Canonical Structures inDifferent Intensity Regions

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 150030,Heilongjiang,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 614202,Sichuan,China)

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150030 [2]西南交通大学土木工程学院,四川成都614202

出　　处：《华南理工大学学报（自然科学版）》2020年第3期67-75,90,共10页Journal of South China University of Technology(Natural Science Edition)

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

摘　　要：为了研究不同烈度区各典型结构地震易损性差异,对汶川地震中都江堰市砌体结构、钢筋混凝土框架结构、底部框架-抗震墙砌体结构等7099栋房屋的震害数据进行统计分析。分别考虑楼层数、建造年代与抗震设防因子耦合影响,给出了各结构类型的对比分析模型曲线。在不同烈度区构建各结构实际震害易损性矩阵及其非线性连续型回归模型,分别给出了实际震害累计超越概率与震害等级的易损性曲线。提出平均震害指数易损性矩阵模型,运用典型结构实际震害矩阵对其进行验证,根据其模型验证结果建立了该市基于该参数的易损性矩阵及多维度曲线模型。In order to study the earthquake vulnerability difference of canonical structures in different intensity regions,the seismic damage data of 7099 buildings in Dujiangyan,including masonry structure,reinforced concrete frame structure and bottom frame-seismic wall masonry structure after Wenchuan earthquake,were analyzed.Considering the number of floors,coupling effect of chronological and seismic fortification factors,the probability matrices of actual seismic damage and the comparative analysis model curves of various structural types were deve-loped.The actual seismic vulnerability matrices and its non-linear continuous regression model were constructed in different intensity zones,and the vulnerability curves of transcendence probability of actual seismic damage and seismic damage grade were drawn respectively.A vulnerability matrix model of mean seismic damage index(MSDI)was put forward,and it was verified by the actual seismic damage matrix of canonical structures.Based on the validation results,the vulnerability matrix and multi-dimensional curve model of the city based on this parameter were established.

关 键 词：结构震害调查 易损性矩阵 易损性曲线 地震烈度 平均震害指数 

分 类 号：TU399[建筑科学—结构工程]