多维地震下大底盘多塔楼隔震结构平扭耦联响应分析
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摘要
采用串联刚片系模型,对隔震结构的多维地震响应进行了分析。基于弹性和弹塑性时程分析方法,利用SAP2000有限元软件探讨了双向水平地震输入时不对称多塔楼基础隔震、层间隔震和抗震结构的地震响应特性,比较了结构自振周期、结构位移、结构加速度、剪力、扭矩和塑性铰等特点。结果表明,采用隔震技术可以显著地降低地震的破坏作用并且减小塑性铰的数量和变形,而层间隔震对减小多塔楼结构体系的扭转作用更为明显。
In this paper,rigid panel model is used to analysis the multi-dimensional seismic response of isolated structure.Based on elastic and elastic-plastic time-history analysis method,the seismic response of base isolation,layer isolation and seismic structure of natural period,displacement,structrual acceleration,shear,torque,the plastic hinge is discussed by using finite element software SAP2000 under the two-directional horizontal earthquake.The result shows that the structure using isolation technology can significantly reduce the destructive effects of earthquakes,and reduce the plastic hinge quantity and deformation.And the torsional vibration response is reduced significantly by the layer isolation.
In this paper,rigid panel model is used to analysis the multi-dimensional seismic response of isolated structure.Based on elastic and elastic-plastic time-history analysis method,the seismic response of base isolation,layer isolation and seismic structure of natural period,displacement,structrual acceleration,shear,torque,the plastic hinge is discussed by using finite element software SAP2000 under the two-directional horizontal earthquake.The result shows that the structure using isolation technology can significantly reduce the destructive effects of earthquakes,and reduce the plastic hinge quantity and deformation.And the torsional vibration response is reduced significantly by the layer isolation.
引文
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[10]JGJ3-2010,高层建筑混凝土结构技术规程[S]JGJ3-2010,Technical Specification for Concrete Structures of Tall Building[S](in Chinese)
[2]谭平,闫维明,周福霖.大平台多塔楼新型隔震体系的智能磁流变控制[J].工程抗震与加固改造,2007,29(3):41～47 Tan Ping,Yan Wei-ming.Zhou Fu-lin.Smart Control for a New Scismic Isolation System of Muiti-tower Structure on a Large Platform Using MR Dampers[J].Earthquake Resistant Engineering and Retrofitting.2007,29(3):41～47(in Chinese)
[3]李向真,梁萍,向伟明.典型平面非规则隔震结构的平扭耦联反应时程计算与分析[J].工程抗震与加固改造.2005,27(3):26～29 Li Xiang-zhen,Liang Ping,Xiang Wei-ming.Calculation and Analysis onLateral-torsional Coupled Response of the Typical Planar Asymmetric Isolated Structure[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):26～29(in Chinese)
[4]黄鑫东,刘文光,何文福.不规则高层隔震结构地震响应的影响分析[J].工程抗震与加固改造,2010,32(3):18～23 Huang Xin-dong,Liu Wen-guang,He Wen-fu.Study on Seismic Responses of Irregular IsolatedHigh-rise[J].Earthquake Resistant Engineering and Retrofitting,2010,32(3):18～23(in Chinese)
[5]Arturo Tenar Colunga.Jose Luis Escamillar Cruz.Torsional Amplification in Asymmetric Base-isolated Structures[J].Engineering Structures,2007,29(2):237～247
[6]杜永峰,林治丹.双向水平地震作用下串联隔震结构的振动控制[J].工程抗震与加固改造,2010,4(32):32～37 Du Yong-feng,Lin Zhi-dan.Vibration Control for Serially Connected Isolated Structures Subject toTwo-Directional Horizontal Earthquake[J].Earthquake Resistant Engineering and Retrofitting,2010,4(32):32～37(in Chinese)
[7]党育,霍凯成.偏心隔震结构扭转效应的影响因素分析[J].武汉理工大学学报,2010,32(14):137～141 Dang Yu,Huo Kai-cheng.Research on the Effect of Torsional Response of Base-islated Buildings[J].Journal of Wuhan University of Technology,2010,32(14):137～141(in Chinese)
[8]杜永峰,刘彦辉,李慧.双向偏心结构扭转耦联地震反应的序列最优控制[J].地震工程与工程振动,2007,4(27):133～138 Du Yong-feng,Liu Yan-hui,Li Hui.Sequential Optimal Control of Torsional Coupled Seismic Response for Bidirectionally Eccentric Structure[J].Journal of Earthquake Engineering and Engineering Vibration,2007,4(27):133～138(in Chinese)
[9]徐培福,黄吉峰,韦承基.高层建筑结构的扭转反应控制[J].土木工程学报.2006,39(7):1～8 Xu Pei-fu,Huang Ji-feng,Wei Cheng-ji.Control of Torsional Response of Tall Building Structures[J].China Civil Engineering Journal,2006,39(7):1～8(in Chinese)
[10]JGJ3-2010,高层建筑混凝土结构技术规程[S]JGJ3-2010,Technical Specification for Concrete Structures of Tall Building[S](in Chinese)
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