基于能力谱法的框架-剪力墙结构地震易损性分析  

Seismic fragility analysis for frame-shear wall structure based on capacity spectrum method

作　　者：韩淼[1] 李守静[1] 

机构地区：[1]北京建筑工程学院,北京100044

出　　处：《土木工程学报》2010年第S1期108-112,共5页China Civil Engineering Journal

基　　金：国家科技支撑项目(2006BAC13B01-0601);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软件设计不同设防烈度的6个10层框架-剪力墙结构。应用能力谱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,回归分析给出最大层间位移角与地震动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,给出结构地震失效概率关于地震动加速度峰值的计算公式。计算得到不同设防烈度框架-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,提供基础数据。Seismic fragility analysis is key to estimate earthquake loss of structure.Six 10-layer typical frame-shear wall structure models whose precautionary intensities were different were designed by use of the structure-designing software PKPM.Based on capacity spectrum method,the maximum interstory drift ratios were calculated if frame-shear wall structures would suffer different degrees of seldom occurred earthquake.Relation formulas of maximum interstory drift ratios and earthquake acceleration amplitude were obtained by regression analysis.Regarding maximum interstory drift ratio as global performance parameter,calculating formulas of seismic failure probability on earthquake acceleration amplitude were given.Failure probabilistic matrixes for frame-shear wall structures of different precautionary intensities were calculated,which provide basic data to estimate seismic fragility analysis of frame-shear wall structures.

关 键 词：易损性分析 设防烈度 框架-剪力墙结构 震害矩阵 

分 类 号：TU398.2[建筑科学—结构工程] TU311.3