基于谱位移的中国高层建筑地震易损性曲线研究
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摘要
地震结构易损性模型是灾害风险评估的重要组成部分,而在目前的中国,随着城市化进程的加剧,目前建成了数量庞大的高层、超高层建筑,但却缺少专门适用于高层建筑的易损性模型。研究通过对已有高层、超高层建筑抗震分析资料及其他基本信息进行统计汇总和分析计算,并利用统计学方法对所得数据进行处理,以最大层间位移角作为目标结构需求,研究了基于谱位移(Sd)的结构地震易损性。根据不同的设防标准和不同的性能水平,建立了相应的曲线,并综合考虑了结构的高度、场地等相关因素的影响。研究获得的系列易损性曲线可以对不同强度地震作用下的高层、超高层结构损害进行有效的评估,并为地震灾害评估提供有价值的参考。
Building structural vulnerability model is an important part of risk assessment for natural hazards such as earthquakes.In China,a large number of high-rises and super-high-rises have been built with the rapid progress of urbanization,but few vulnerability models are developed for high-rises.In this study,published data of high-rises and super-high-rises are collected and analyzed.Seismic fragility curves are developed based on maximum story drift ratios under response spectral displacements(Sd).Fragility curves for different performance levels under different design codes are also developed correspondingly,and the factors such as building height and site condition are considered.The fragility curves of this study provide good estimation of high-rises and super-high-rises under different earthquake intensities,and could further provide a reliable approach for seismic risk assessment.
Building structural vulnerability model is an important part of risk assessment for natural hazards such as earthquakes.In China,a large number of high-rises and super-high-rises have been built with the rapid progress of urbanization,but few vulnerability models are developed for high-rises.In this study,published data of high-rises and super-high-rises are collected and analyzed.Seismic fragility curves are developed based on maximum story drift ratios under response spectral displacements(Sd).Fragility curves for different performance levels under different design codes are also developed correspondingly,and the factors such as building height and site condition are considered.The fragility curves of this study provide good estimation of high-rises and super-high-rises under different earthquake intensities,and could further provide a reliable approach for seismic risk assessment.
引文
[1]朱健,谭平,周福霖.土木工程动力易损性分析研究现状与展望[J].建筑科学,2011,27(5):106-110.
[2]张令心,高淼,王瑞.按新旧规范设计的多层住宅砖房地震易损性的对比[J].地震工程与工程振动,2007,27(6):75-81.
[3]张令心,江近仁,刘洁平.多层住宅砖房的地震易损性分析[J].地震工程与工程振动,2002,22(1):49-55.
[4]吕大刚,李晓鹏,王光远.基于可靠度和性能的结构整体地震易损性分析[J].自然灾害学报,2006,15(2):107-114.
[5]吕大刚,李晓鹏,王光远.基于可靠度和灵敏度的结构局部地震易损性分析[J].自然灾害学报,2006,15(4):157-162.
[6]Peter Fajfar,TomaVidic,Matej Fischinger.A meas-ure of earthquake motion capacity to damage medium-period structures[J].Soil Dynamics and EarthquakeEngineering,1990,9:236-242.
[7]Huo,J.-R.,Hwang,H.Generation of fragility curvesfor RC buildings in the Memphis Area,[R]Center forEarthquake Research and Information,the University ofMemphis,1996.
[8]叶列平,马千里,缪志伟.结构抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9-22.
[9]Hwang,H.,J.-R.,Huo.Generation of hazard-con-sistent fragility curves[J].Soil Dynamics and Earth-quake Engineering,1994,13:345-354.
[10]FEMA.Multi-hazard loss estimation methodology earth-quake model,HAZUS-MH MR3 Technical Manual,Washington.D.C.,2003.
[2]张令心,高淼,王瑞.按新旧规范设计的多层住宅砖房地震易损性的对比[J].地震工程与工程振动,2007,27(6):75-81.
[3]张令心,江近仁,刘洁平.多层住宅砖房的地震易损性分析[J].地震工程与工程振动,2002,22(1):49-55.
[4]吕大刚,李晓鹏,王光远.基于可靠度和性能的结构整体地震易损性分析[J].自然灾害学报,2006,15(2):107-114.
[5]吕大刚,李晓鹏,王光远.基于可靠度和灵敏度的结构局部地震易损性分析[J].自然灾害学报,2006,15(4):157-162.
[6]Peter Fajfar,TomaVidic,Matej Fischinger.A meas-ure of earthquake motion capacity to damage medium-period structures[J].Soil Dynamics and EarthquakeEngineering,1990,9:236-242.
[7]Huo,J.-R.,Hwang,H.Generation of fragility curvesfor RC buildings in the Memphis Area,[R]Center forEarthquake Research and Information,the University ofMemphis,1996.
[8]叶列平,马千里,缪志伟.结构抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9-22.
[9]Hwang,H.,J.-R.,Huo.Generation of hazard-con-sistent fragility curves[J].Soil Dynamics and Earth-quake Engineering,1994,13:345-354.
[10]FEMA.Multi-hazard loss estimation methodology earth-quake model,HAZUS-MH MR3 Technical Manual,Washington.D.C.,2003.
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