长周期地震动作用下高层框架结构的损伤分析
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摘要
为了研究长周期地震动作用下高层框架结构的抗震性能,利用地震损伤评估体系对高层结构进行损伤分析.在分析总结结构地震损伤模型的基础上,以一幢12层混凝土框架结构建筑为研究对象,利用振动台试验结果,采用数值模拟方法,从结构整体损伤和材料损伤2个层次进行了长周期地震动作用下高层框架结构的损伤分析,并与普通地震动作用下的结果进行了比较研究.结果表明:长周期地震动作用下结构的整体损伤指标明显大于普通地震动作用的结果,且混凝土损伤分布范围更广,为高层结构基于性能的抗震设计提供了参考.
In order to study the anti-seismic performance of high-rise frame structures under long-period ground motion action,a seismic damage evaluation system was used to carry out the damage analysis on high-rise structures.Based on the analysis and summary for structural seismic damage models as well as with taking a twelve-storey concrete frame structure as the research object,utilizing the results of shaking table tests and adopting the numerical simulation method,the damage analysis on the high-rise frame structures under long-period ground motion action was carried out from both global structural damage and material damage,and was compared with the results under ordinary ground motion action.The results show that the global damage indexes of the structures under long-period ground motion action are significantly larger than those under ordinary ground motion action.Furthermore,the damage distribution range of concrete under long-period ground motion action is more extensive.The present research provides the reference for the performance-based anti-seismic design of high-rise structures.
In order to study the anti-seismic performance of high-rise frame structures under long-period ground motion action,a seismic damage evaluation system was used to carry out the damage analysis on high-rise structures.Based on the analysis and summary for structural seismic damage models as well as with taking a twelve-storey concrete frame structure as the research object,utilizing the results of shaking table tests and adopting the numerical simulation method,the damage analysis on the high-rise frame structures under long-period ground motion action was carried out from both global structural damage and material damage,and was compared with the results under ordinary ground motion action.The results show that the global damage indexes of the structures under long-period ground motion action are significantly larger than those under ordinary ground motion action.Furthermore,the damage distribution range of concrete under long-period ground motion action is more extensive.The present research provides the reference for the performance-based anti-seismic design of high-rise structures.
引文
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[9]Zhang X,Wong K K F,Wang Y.Performance assess-ment of moment resisting frames during earthquakesbased on the force analogy method[J].EngineeringStructures,2007,29(10):2792-2802.
[10]张劲,王庆扬,胡守营,等.ABAQUS混凝土损伤塑性模型参数验证[J].建筑结构,2008,38(8):127-130.(ZHANG Jin,WANG Qing-yang,HU Shou-ying,et al.Parameters verification of concrete damage plas-tic model of ABAQUS[J].Building Structure,2008,38(8):127-130.)
[11]Trifunac M D,Brady A G.A study on duration ofstrong earthquake ground motion[J].Bulletin of theSeismological Society of America,1975,65(3):581-626.
[12]尹犟,易伟建,胡其高.结构整体抗震性能评估新方法[J].工程力学,2010,27(3):123-131.(YIN Jiang,YI Wei-jian,HU Qi-gao.The new me-thod for estimating seismic performance of structures[J].Engineering Mechanics,2010,27(3):123-131.)
[2]廖述清,裴星洙,周晓松,等.长周期地震动作用下结构的弹塑性地震反应分析[J].建筑结构,2005,35(5):24-27.(LIAO Shu-qing,PEI Xing-zhu,ZHOU Xiao-song,et al.Elastic-plastic analysis of earthquake response ofstructures under the long-period earthquake motion[J].Building Structure,2005,35(5):24-27.)
[3]楼梦麟,杨燕,潘小樟,等.汶川地震中上海高层建筑动力反应分析[J].建筑科学与工程学报,2009,26(3):82-88.(LOU Meng-lin,YANG Yan,PAN Xiao-zhang,et al.Dynamic response analysis of high-rise buildings inShanghai during Wenchuan earthquake[J].Journal ofArchitecture and Civil Engineering,2009,26(3):82-88.)
[4]Chung Y L,Nagae T,Hitaka T,et al.Seismic resis-tance capacity of high-rise buildings subjected to long-period ground motions:e-defense shaking table test[J].Journal of Structural Engineering,2010,136(6):637-644.
[5]吕西林,李培振,陈跃庆.12层钢筋混凝土标准框架振动台模型试验的完整数据[R].上海:同济大学土木工程防灾国家重点实验室振动台试验室,2004.(LV Xi-lin,LI Pei-zhen,CHEN Yue-qing.Benchmarktest of a 12-story reinforced concrete frame model onshaking table[R].Shanghai:Shaking Table TestingDivision of State Key Laboratory of Disaster Reduc-tion in Civil Engineering,Tongji University,2004.)
[6]Park Y J,Ang A H S.Mechanistic seismic damagemodel for reinforced concrete[J].Journal of Structu-ral Engineering,1985,111(4):722-739.
[7]Dipasquale E,Cakmak A S.On the relation betweenlocal and global damage indices[R].New York:Na-tional Center for Earthquake Engineering Research,1989.
[8]黄志华,吕西林,周颖,等.高层混合结构地震整体损伤指标研究[J].同济大学学报:自然科学版,2010,38(2):170-177.(HUANG Zhi-hua,LV Xi-lin,ZHOU Ying,et al.Studies on global seismic damage indices of high-risehybrid structures[J].Journal of Tongji University:Natural Science,2010,38(2):170-177.)
[9]Zhang X,Wong K K F,Wang Y.Performance assess-ment of moment resisting frames during earthquakesbased on the force analogy method[J].EngineeringStructures,2007,29(10):2792-2802.
[10]张劲,王庆扬,胡守营,等.ABAQUS混凝土损伤塑性模型参数验证[J].建筑结构,2008,38(8):127-130.(ZHANG Jin,WANG Qing-yang,HU Shou-ying,et al.Parameters verification of concrete damage plas-tic model of ABAQUS[J].Building Structure,2008,38(8):127-130.)
[11]Trifunac M D,Brady A G.A study on duration ofstrong earthquake ground motion[J].Bulletin of theSeismological Society of America,1975,65(3):581-626.
[12]尹犟,易伟建,胡其高.结构整体抗震性能评估新方法[J].工程力学,2010,27(3):123-131.(YIN Jiang,YI Wei-jian,HU Qi-gao.The new me-thod for estimating seismic performance of structures[J].Engineering Mechanics,2010,27(3):123-131.)
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