滑动支座隔震性能的有限元分析
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摘要
介绍了一种聚四氟乙烯(PTFE)滑动支座的构造以及工作原理.采用有限元分析软件ABAQUS对PTFE滑动支座在水平位移激励作用下的滞回性能和地震激励作用下的位移响应进行了有限元分析.分析结果表明,该支座具有很好的滞回性能,但由于该支座没有复位装置,滑移后有残留位移,在应用时需根据实际情况预留水平方向的净间距.通过往复加载下支座的滞回性能分析和地震激励作用下的位移响应分析,为实际工程提供了结构支座设计的理论依据.
In this paper,a PTFE sliding bearing of the structure and its working principle are investigated.The hysteretic behavior of horizontal displacement excitation and the displacement response of seismic excitation are analyzed by finite element method ABAQUS.The computed results show that the bearing has some good effects on consuming the energy of the seismic wave.Because the original isolation bearings do not have the function of resettlement,there is residual displacement after the bearing slipping in use.The net spacing along horizontal direction should be kept according to the actual situation of the bearing.Through the analysis of the hysteretic behavior,several useful suggestions for the design of the PTFE sliding bearing are proposed.
In this paper,a PTFE sliding bearing of the structure and its working principle are investigated.The hysteretic behavior of horizontal displacement excitation and the displacement response of seismic excitation are analyzed by finite element method ABAQUS.The computed results show that the bearing has some good effects on consuming the energy of the seismic wave.Because the original isolation bearings do not have the function of resettlement,there is residual displacement after the bearing slipping in use.The net spacing along horizontal direction should be kept according to the actual situation of the bearing.Through the analysis of the hysteretic behavior,several useful suggestions for the design of the PTFE sliding bearing are proposed.
引文
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[2]MOKHA A,CONSTANTINOU M,REINHORN AM.Teflon Bearing in Base IsolationⅠ:testing[J].Journal of Structural Engineering,ASCE.1990,116(2):438-484.
[3]CONSTANTINOU M,MOKHA A,REINHORN AM.Teflon Bearing in Base IsolationⅡ:Testing[J].Journal of Structural Engineering,ASCE.1990,116(2):455-474.
[4]薛素铎,李雄彦,蔡炎城.摩擦滑移水平隔震支座的性能试验[J].北京工业大学学报,2009,35(2):168-173.
[5]侯中华,李一帆,李作良.纯摩擦滑移隔震结构的位移反应分析[J].湖南科技学院院报,2009,30(8):126-128.
[6]樊剑,唐家祥.滑移隔震结构的地震反应分析[J].工程抗震,2001,(3):27-31.
[7]付德月宗,何广杰,周灵源.橡胶支座隔震结构弹塑性时程分析[J].四川建筑,2005,25(5):62-66.
[8]房营光.非线性滑动隔震结构地震响应特性及其突变性分析[J].土木工程学报,2004,37(9):25-26.
[9]石亦平,周玉蓉.ABAQUS有限元分析实例详解[M].北京:机械工业出版社,2008:136-140.
[10]符刚,罗尧治,赖达东.聚四氟乙烯(PTFE)网架支座的实验研究第十届空间结构学术会议论文集[C].北京:中国建材工业出版社,2002:880-885.
[11]王言明.复杂滑动钢支座的性能分析[D].南京:东南大学土木工程学院,2007.
[2]MOKHA A,CONSTANTINOU M,REINHORN AM.Teflon Bearing in Base IsolationⅠ:testing[J].Journal of Structural Engineering,ASCE.1990,116(2):438-484.
[3]CONSTANTINOU M,MOKHA A,REINHORN AM.Teflon Bearing in Base IsolationⅡ:Testing[J].Journal of Structural Engineering,ASCE.1990,116(2):455-474.
[4]薛素铎,李雄彦,蔡炎城.摩擦滑移水平隔震支座的性能试验[J].北京工业大学学报,2009,35(2):168-173.
[5]侯中华,李一帆,李作良.纯摩擦滑移隔震结构的位移反应分析[J].湖南科技学院院报,2009,30(8):126-128.
[6]樊剑,唐家祥.滑移隔震结构的地震反应分析[J].工程抗震,2001,(3):27-31.
[7]付德月宗,何广杰,周灵源.橡胶支座隔震结构弹塑性时程分析[J].四川建筑,2005,25(5):62-66.
[8]房营光.非线性滑动隔震结构地震响应特性及其突变性分析[J].土木工程学报,2004,37(9):25-26.
[9]石亦平,周玉蓉.ABAQUS有限元分析实例详解[M].北京:机械工业出版社,2008:136-140.
[10]符刚,罗尧治,赖达东.聚四氟乙烯(PTFE)网架支座的实验研究第十届空间结构学术会议论文集[C].北京:中国建材工业出版社,2002:880-885.
[11]王言明.复杂滑动钢支座的性能分析[D].南京:东南大学土木工程学院,2007.
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