高层中间层隔震结构的非线性动力分析
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摘要
采用时程分析方法,分析高层隔震结构在罕遇地震作用下的响应.主要包括结构的塑性变形和塑性发展情况,结构的层间位移及楼层加速度响应.结果表明,在罕遇地震作用下,隔震结构进入塑性的程度较轻,震后稍加修复即可继续使用.塑性铰最先出现在结构底部,逐渐向上层开展.塑性铰均产生在梁端,柱端始终未出铰.楼层位移主要集中在隔震曾层,但上部结构的层间位移很小.罕遇地震作用下结构的楼层加速度显著减小.
Seismic response analysis of high-rise isolated structure was under rare earthquake carried out using time-history method.Plastic deformation,story displacement and story acceleration were all included.The results show that plastic deformation has not highly developed and the structure can be used after simple repairation.Plastic hinges appear all at the end of frame beams,and no one is found at the end of frame columns.Story displacement is centralized at isolation layer,and story drift is small on superstructure.Story acceleration is reduced significantly.
Seismic response analysis of high-rise isolated structure was under rare earthquake carried out using time-history method.Plastic deformation,story displacement and story acceleration were all included.The results show that plastic deformation has not highly developed and the structure can be used after simple repairation.Plastic hinges appear all at the end of frame beams,and no one is found at the end of frame columns.Story displacement is centralized at isolation layer,and story drift is small on superstructure.Story acceleration is reduced significantly.
引文
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8金星,韦永祥,张红才等.基于强震观测的隔震结构地震反应分析.地震工程与工程振动,2009,29(2):19～28(Jin X,Wei Y X,Zhang H C,et al.Analysis of the seismic responses of a base-isolated building on the basis of strong motion observation.Journal of Earthquake Engineer-ing and Engineering Vibration,2009,29(2):19～28(in Chinese))
2谭丽芳,蒋丽忠,董立冬.基于Push-over分析的钢-混凝土组合框架抗震性能研究.动力学与控制学报,2008,6(2):169～172(Tan L F,Jiang L Z,Dong L D.Push-Over analysis on the steel-concrete composite frame structure ith three stories.Journal of Dynamics and Control,2008,6(2):169～172(in Chinese))
3韩小雷,陈学伟,林生逸等.基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析.建筑结构,2010,40(2):13～16(Han X L,Chen X W,Lin S Y,et al.Elasto-plastic time-history analysis of super high-rise RC structure based on fiber mode.Building Structure,2010,40(2):13～16(in Chinese))
4林旭川,陆新征,缪志伟,等.基于分层壳单元的RC核心筒结构有限元分析和工程应用.土木工程学报,2009,42(3):49～54(Lin X C,Lu X Z,Miao Z W,et al.Finite element analysis and engineering application of RC coretube structures based on the multi-layer shell ele-ments.China Civil Engineering Journal,2009,42(3):49～54(in Chinese))
5叶列平,陆新征,马千里等.混凝土结构抗震非线性分析模型、方法及算例.工程力学,2006,23(S2):173～183(Ye L P,Lu X Z,Ma Q L,et al.Nonlinear analytical models,methods and examples for concrete structures subject to earthquake loading.Engineering Mechanics,2006,23(S2):173～183(in Chinese))
6徐忠根,胡敏茵,周福霖.房屋建筑中间层隔震研究.工程抗震与加固改造,2004,(5):23～28(Xu Z G,Hu M Y,Zhou F L.Discussion on Mid-story isolation of building.Earthquake Resistant Engineering and Retrofitting,2004,(5):23～28(in Chinese))
7赵楠,马凯,李婷等.大底盘多塔高层隔震结构的地震响应.土木工程学报,2010,43:130～133(Zhao N,Ma K,Li T,et al.Seismic response on multi-tower high-rise isolation structure for large base plate.China Civil Engineering Journal,2010,43:130～133(in Chinese))
8金星,韦永祥,张红才等.基于强震观测的隔震结构地震反应分析.地震工程与工程振动,2009,29(2):19～28(Jin X,Wei Y X,Zhang H C,et al.Analysis of the seismic responses of a base-isolated building on the basis of strong motion observation.Journal of Earthquake Engineer-ing and Engineering Vibration,2009,29(2):19～28(in Chinese))
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