抗拔型TFPB隔震结构动力特性及地震响应分析
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摘要
抗拔型三重摩擦摆隔震支座是一种新型隔震支座。本文以框架结构为例,利用ANSYS软件建立了普通抗震结构和带该支座的基础隔震结构两种模型。通过模态分析,得到了结构的自振周期和振型参与系数;通过地震响应分析,得出结构各层间位移、加速度及剪力幅值,并提取了隔震层和顶层的位移、加速度和剪力时程曲线。结果表明:与抗震结构相比,基础隔震结构周期显著增大;各楼层的加速度幅值、层间剪力、层间位移幅值也相应地得到了控制,具有良好的减震效果。
The uplift resistance type triple friction pendulum bearing is a new type of bearings.Taking frame structure as an example,the models of a common structure and the base isolation structure are established using the software ANSYS.Through modal analysis,the structural self vibration period and vibration mode participation coefficient are obtained;Base on the seismic response analysis,the story drift,acceleration and shear amplitude,and extracting the isolation layer and the top layer of the displacement,acceleration and shear time-history curve are also derived.The results show that: compared with common structure,base isolation structure period increases significantly;the floor acceleration amplitude,shear layers,story drift amplitude are also got control,so the base isolation structure has good damping effect.
The uplift resistance type triple friction pendulum bearing is a new type of bearings.Taking frame structure as an example,the models of a common structure and the base isolation structure are established using the software ANSYS.Through modal analysis,the structural self vibration period and vibration mode participation coefficient are obtained;Base on the seismic response analysis,the story drift,acceleration and shear amplitude,and extracting the isolation layer and the top layer of the displacement,acceleration and shear time-history curve are also derived.The results show that: compared with common structure,base isolation structure period increases significantly;the floor acceleration amplitude,shear layers,story drift amplitude are also got control,so the base isolation structure has good damping effect.
引文
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[2]温丽,王曙光,杜东升,许磊平.大型储液罐摩擦摆基底隔震控制分析[J].世界地震工程,2009,4(25):161～166Wen Li,Wang Shu-guang,Du Dong-sheng,Xu Lei-ping.Controlling Analysis of Friction Pendulum Systemfor the Seismic Isolation of Liquid Storage Tanks[J].Word Earthquake Engeering,2009,4(25):161～166(in Chinese)
[3]龚健,周云.摩擦摆隔震技术研究和应用的回顾与前瞻(I)——摩擦摆隔震支座的类型与性能[J].工程抗震与加固改造,2010,32(03):1～10Gong Jian,Zhou Yun.State of the Art and Prospect ofthe Research and Application of Friction PendulumIsolation Technology(I)——Types and Performanceof Friction Pendulum Bearings[J].Earthquake ResistantEngineering and Retrofitting,2010,32(03):1～10(inChinese)
[4]Daniel M Fenz,Michael C Constantinou.SphericalSliding Isolation Bearings with Adaptive Behavior:Theory[J].Earthquake Engineering and StructuralDynamics,2008:163～183
[5]黄小健,赵歆冬,马辉.层间隔震结构动力特性及地震响应分析[J].甘肃科技,2011,11(27):119～121Huang Xiao-jian,Zhao Xin-dong,Ma Hui.DynamicCharacteristics and Seismic Response Analysis of Story-isolation Structure[J].Gansu Science and Technology,2011,11(27):119～121(in Chinese)
[6]庄鹏,薛素铎.双层球面网壳屋盖结构的摩擦摆层间隔震研究[J].建筑科学,2010,11(26):39～44Zhang Peng,Xue Su-duo.Mid-story Isolation of Double-layer Spherical Lattice Shells using FPS Bearings[J].Building Science,2010,11(26):39～44(in Chinese)
[7]GB50011-2010,建筑抗震设计规范[S]GB50011-2010,Code for Seismic Design of Buildings[S](in Chinese)
[8]杜东升,王曙光,刘伟庆,王浩亮.高层隔震结构非线性地震响应分析及设计方法研究[J].防灾减灾工程学报,2010,5(30):550～557Du Dong-sheng,Wang Shu-guang,Liu Wei-qing,WangHao-liang.Research on Nonlinear Seismic ResponseAnalysis and Design Method of High-rise IsolatedStructure[J].Journal of Disaster Prevention andMitigation Engineering,2010,5(30):550～557(inChinese)
[9]葛楠,苏幼坡,王兴国,周锡元.竖向刚度对FPS滑移摩擦摆系统隔震性能影响研究[J].工程抗震与加固改造,2010,32(4):20～25Ge Nan,Su You-po,et al.Disturbance from VerticalOscillation to Seismic Isolation Behavior of FPS System[J].Earthquake Resistant Engineering and Retrofitting,2010,32(4):20～25(in Chinese)
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