缓冲限位滞变-摩擦隔震系统的理论恢复力模型研究
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摘要
针对弹塑性缓冲限位装置与滞变-摩擦隔震装置并联的隔震系统,在总结试验结果的基础上,提出了隔震系统的理论恢复力模型,建立了系统的运动方程;通过与非线性时程分析及试验结果的对比,验证了理论恢复力模型的正确性;通过主、余震作用下的地震反应分析,表明该限位装置在确保上部结构安全的同时,能够有效地限制隔震层的位移,并起到较强余震作用下的二次保护作用。本文的研究可为相应隔震体系的设计和工程应用提供依据。
In this paper,for the hysteretic-friction system with elastic-plastic displacement-constraint device,the theoretical restoring force model is put forward based on summary the pseudo static tests,and the motion equation of the isolation system is established.Through the comparison on the nonlinear time history analysis and test results,the correction of the theoretical restoring force mode is proved.Through the main shock and aftershock analysis,the results indicate that the displacement-constraint device not only can keep the upper structure safety,but also can effectively limit the displacement of the isolation layer,meanwhile can supply secondary protection under macro-aftershock.The research of this paper can provide reference for design and application of the isolation system.
In this paper,for the hysteretic-friction system with elastic-plastic displacement-constraint device,the theoretical restoring force model is put forward based on summary the pseudo static tests,and the motion equation of the isolation system is established.Through the comparison on the nonlinear time history analysis and test results,the correction of the theoretical restoring force mode is proved.Through the main shock and aftershock analysis,the results indicate that the displacement-constraint device not only can keep the upper structure safety,but also can effectively limit the displacement of the isolation layer,meanwhile can supply secondary protection under macro-aftershock.The research of this paper can provide reference for design and application of the isolation system.
引文
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[2]周锡元,韩淼,曾德民,等.具有软着陆保护的橡胶支座隔震体系[J].建筑结构学报,2000,21(5):3-11.
[3]韩淼,周锡元.基础隔震软碰撞保护分析[J].建筑科学,1999,15(1):14-20.
[4]杨林,周锡元,苏幼坡,等.基础隔震建筑中应用变刚度保护装置的地震反应分析[J].工业建筑,2006,36(9):24-29.
[5]崔艺斌,张富有.带限位钢棒隔震橡胶垫基本特性研究[J].河海大学学报:自然科学版,2007,35(3):302-304.
[6]韩淼,李仙华,杜红凯.钢螺旋弹簧软碰撞限位隔震试验位移反应分析[J].工程程抗震与加固改造,2007,29(6):25-28.
[7]赵桂峰,王焕定.变刚度钢管混凝土短柱足尺隔震装置的伪静力试验研究[J].哈尔滨建筑大学学报,2000,33(6):17-21.
[8]赵桂峰.变刚度被动控制体系的研究[D].哈尔滨:哈尔滨工业大学,2001.
[9]王焕定,张永山.非线性结构时程分析的高阶单步法[J].地震工程与工程振动,1996,16(3):48-54.
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