基于增量动力法的剪力墙结构地震易损性分析  

Seismic fragility analysis of shear wall structure by using incremental dynamic method

作　　者：韩淼[1] 那国坤[1] 

机构地区：[1]北京建筑工程学院土木与交通工程学院,北京100044

出　　处：《世界地震工程》2011年第3期108-113,共6页World Earthquake Engineering

基　　金：地震行业科研专项项目(200808009)

摘　　要：地震易损性分析是评估结构地震灾害损失的关键。应用PKPM软件设计了不同设防烈度的6个16层剪力墙结构。应用增量动力法求得各结构在不同罕遇烈度地震作用下的最大层间位移角,回归分析给出了最大层间位移角与地震作用加速度峰值的关系式。以最大层间位移角为整体性能指标,进行结构地震易损性分析,给出了结构地震失效概率关于地震作用加速度峰值的计算公式。计算得到了不同设防烈度剪力墙结构在罕遇地震作用下的震害矩阵,为评估框架-剪力墙结构的地震灾害损失,提供了基础数据。Seismic fragility analysis is the key to estimate earthquake loss of structure. Six 16-story typical shear wall structures whose seisimc forliliation intensities are different were designed by use of the structure-designing software PKPM. Based on incremental dynamic analysis, the maximum interstory drife ratios were calculated if shear wall structures would suffer different degrees of seldom occurred earthquake. Relation formulas of maximum interstory drife ratios and earthquake acceleration amplitude were obtained by regression analysis. Regarding maxi- mum interstory drife ratio as global performance parameter, calculating formulas of seismic failure probability on earthquake acceleration amplitude were given. Failure probabilistie matrixes for shear wall structures of different secsmic fortificatfion intensities were calculated, which provide basic data to estimate seismic fragility analysis of shear wall structures.

关 键 词：易损性分析 设防烈度 剪力墙结构 震害矩阵 

分 类 号：TU375[建筑科学—结构工程] P315.9[天文地球—地震学]