基于砌体结构破坏损伤的地震烈度物理标准研究  

Study on physical measure of seismic intensity based on damage to masonry structures

作　　者：郝敏[1] 谢礼立[2] 李伟[2] 

机构地区：[1]清华大学土木工程系,北京100084 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2007年第5期27-32,共6页Earthquake Engineering and Engineering Dynamics

基　　金：中国博士后基金(20060400432)

摘　　要：为了研究基于砌体结构破坏的地震烈度物理标准,将15个地震动参数按属性(峰值、频率、持时和能量)分成4类,将地震记录按地震动三要素(峰值、频率、持时)分成3组,求出每组记录作用下砌体结构的延性系数,计算出各个参数值和延性系数的相关系数,比较分析这些相关系数发现地震动峰值加速度、有效峰值加速度、地震动输入能量和滞回耗能都能表征地震动对砌体的破坏势,并且这4个参数都和烈度有很好的相关性,可以作为烈度的物理标准。In order to study the physical measure of seismic intensity based on the damage to masonry structures, fifteen ground motion parameters were divided into 4 kinds according to their property and ground motion records were grouped into 3 teams based on three factors, that is amplitude, spectrum, and duration of ground motion. The correlation coefficient between the ductility of two masonry structures subjected to each group of ground motions and the corresponding ground motion parameters were calculated. Then the analysis and comparison of correlation coefficients were conducted and the result implied that PGA, EPA, Einput, Eh can reflect the damage potential for masonry structures. And all these ground motion parameters have good correlation with seismic intensity and they can serve as the physical measure of seismic intensity.

关 键 词：地震动参数 地震烈度物理标准 砌体结构 潜在破坏势 相关性 

分 类 号：P315.9[天文地球—地震学]