DFPS摩擦盘与碟型弹簧组合隔震系统性能分析
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摘要
根据多体动力学理论相对动能定理推求了DFPS滑移式摩擦摆与碟型弹簧组成的三维复合隔震系统动力反应分析计算公式,考虑了竖向振动与水平向振动的耦合作用.分析与计算结果表明:隔震系统在水平向与竖向都具备必要的隔震特性,即隔离能力与复位能力;依靠摩擦作用与结构自身阻尼可以消耗传入结构的能量.当滑道半径为1～2 m、滑动摩擦系数为0.01左右时,水平向隔震效率可达85%左右,在竖向也能有效减小受压层间位移与防止出现受拉层间位移,同时具有较好的消能效果与复位能力.这时滑道曲率对体系竖向振动的扰动很小,可不考虑水平向与竖向的耦合作用,各自单独计算.
A theoretical analysis approach of the compound seismic isolation system consisting of DFPS and dish spring is derived.It starts from the relative kinematic energy theorem in multiply-body dynamics,including the coupling effect of the level vibration and vertical vibration.Computation results show that this system has the necessary isolation capability and reposition capability in both directions;the slipping friction forces at the contacting surface provide the energy dissipation capability.When the slide radius is in the range of 1-2 m and the slipping friction coefficient is about 0.01,the seismic isolation effectiveness can be as high as 85%,while the coupling effect in two directions is so slight that it can be neglected and the dynamic responses can be calculated in each direction,respectively.
A theoretical analysis approach of the compound seismic isolation system consisting of DFPS and dish spring is derived.It starts from the relative kinematic energy theorem in multiply-body dynamics,including the coupling effect of the level vibration and vertical vibration.Computation results show that this system has the necessary isolation capability and reposition capability in both directions;the slipping friction forces at the contacting surface provide the energy dissipation capability.When the slide radius is in the range of 1-2 m and the slipping friction coefficient is about 0.01,the seismic isolation effectiveness can be as high as 85%,while the coupling effect in two directions is so slight that it can be neglected and the dynamic responses can be calculated in each direction,respectively.
引文
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[15]葛楠,苏幼坡,王兴国,等.竖向刚度对偏心辊轴摩擦摆隔震系统性能影响研究[J].建筑科学,2011,27(1):29-31.GE Nan,SU You-po,WANG Xing-guo,et al.Disturbance from vertical oscillation to seismic isolationbehavior of ERFPS system[J].Building Science,2011,27(1):29-31.(in Chinese)
[16]张玉敏,苏幼坡,梁军,等.碟型弹簧竖向减震装置的研究[J].哈尔滨工业大学学报,2005,37(12):1678-1680.ZHANG Yu-min,SU You-po,LIANG Jun,et al.Astudy on vertical seismic isolation system by disk spring[J].Journal of Harbin Institute of Technology,2005,37(12):1678-1680.(in Chinese)
[17]谭靖,邱林波,张玉敏,等.水平-竖向复合隔震装置的性能试验研究[J].工业建筑,2008,38(3):64-67.TAN Jing,QIU Lin-bo,ZHANG Yu-min,et al.Theproperty experimental study of the lateral and verticalcompound seismic isolation system[J].IndustrialConstruction,2008,38(3):64-67.(in Chinese)
[18]陆文遂.碟形弹簧的计算设计与制造[M].上海:复旦大学出版社,1980:6-58.
[2]JANGID R S,DATTA T K.Seismic behavior of baseisolated buildings:a state of the art review[J].Structuresand Buildings,1995,110(2):186-202.
[3]MOKHA A S,CONSTANTINOU M C,REINHOM A M,et al.Experimental study of friction pendulum systemisolation system[J].Journal of Structure Engineering,ASCE,1991,117(4):1201-1217.
[4]MOKHA A S,AMIN N,CONSTANTINOU M C,et al.Seismic isolation retrofit of large historic buildings[J].Journal of Structure Engineering,ASCE,1996,122(3):298-308.
[5]HWANG J S,Evaluation of equivalent linear analysismethods of bridge isolation[J].Journal of StructureEngineering,ASCE,1996,122(8):972-976.
[6]TSOPELAS P,CONSTANTINOU M C,KIM Y S,et al.Experimental study of FPS system in bridge seismicisolation[J].Earthquake Engineering and StructuralDynamics,1996,25:65-78.
[7]WANG Y P,CHUNG L L,LIAO W H.Seismic responseanalysis of bridges isolated with friction pendulum bearings[J].Earthquake Engineering&Structural Dynamics,1998,27(10):1069-1093.
[8]李大望,李桂青,周锡元.FPS隔震结构的水平和竖向振动响应分析[J].建筑结构,2000,30(7):61-64.LI Da-wang,LI Gui-qing,ZHOU Xi-yuan.Horizontal andvertical dynamic response analysis for FPS seismic isolationsystem[J].Building Structures,2000,30(7):61-64.(in Chinese)
[9]李大望,周锡元,王东炜.摩擦摆系统振动性态的进一步分析[J].振动工程学报,2001,14(3):330-333.LI Da-wang,ZHOU Xi-yuan,WANG Dong-wei.Furtheranalysis is for the vibration performances of frictionpendulum systems[J].Journal of Engineering Vibrations,2001,14(3):330-333.(in Chinese)
[10]李大望,关罡,赵卓.摩擦摆系统稳态随机响应预测[J].世界地震工程,2000,16(3):101-104.LI Da-wang,GUAN Gang,ZHAO Zhuo.Forecasting forthe steady state random responses of friction pendulumsystems[J].World Earthquake Engineering,2000,16(3):101-104.(in Chinese)
[11]周锡元,阎维明,杨润林.建筑结构的震动、减振和振动控制[J].建筑结构学报,2002,23(2):2-11.ZHOU Xi-yuan,YAN Wei-ming,YANG Run-lin.Seismic base isolation,energy dissipation and vibrationcontrol of building structures[J].Journal of BuildingStructures,2002,23(2):2-11.(in Chinese)
[12]杨林,常永平,周锡元,等.FPS隔震体系振动台试验与有限元模型对比分析[J].建筑结构学报,2008,29(4):66-72.YANG Lin,CHANG Yong-ping,ZHOU Xi-yuan,et al.Comparison analysis for the shaking table test and finiteelement model of FPS system[J].Journal of BuildingStructures,2008,29(4):66-72.(in Chinese)
[13]葛楠,苏幼坡,王兴国,等.竖向刚度对FPS滑移摩擦摆系统隔震性能的影响[J].工程抗震与加固改造,2010,32(4):20-25.GE Nan,SU You-po,WANG Xing-guo,et al.Theisolation performance of sliding friction pendulum system(FPS)affected by the vertical stiffness[J].EarthquakeResistant Engineering and Retrofitting,2010,32(4):20-25.(in Chinese)
[14]葛楠,苏幼坡,王兴国.圆弧滑道辊轴摩擦摆隔震理论的研究[C]∥第17届全国结构工程学术会议论文集(第Ⅲ册).武汉:工程力学杂志社,2008,8:26-30.GE Nan,SU You-po,WANG Xing-guo.Research aboutrolling pendulum earthquake isolating system on circularslide[C]∥Proceedings of 17th National Conference ofStructural Engineering.Wuhan:Engineering MechanicsMagazine,2008,8:26-30.(in Chinese)
[15]葛楠,苏幼坡,王兴国,等.竖向刚度对偏心辊轴摩擦摆隔震系统性能影响研究[J].建筑科学,2011,27(1):29-31.GE Nan,SU You-po,WANG Xing-guo,et al.Disturbance from vertical oscillation to seismic isolationbehavior of ERFPS system[J].Building Science,2011,27(1):29-31.(in Chinese)
[16]张玉敏,苏幼坡,梁军,等.碟型弹簧竖向减震装置的研究[J].哈尔滨工业大学学报,2005,37(12):1678-1680.ZHANG Yu-min,SU You-po,LIANG Jun,et al.Astudy on vertical seismic isolation system by disk spring[J].Journal of Harbin Institute of Technology,2005,37(12):1678-1680.(in Chinese)
[17]谭靖,邱林波,张玉敏,等.水平-竖向复合隔震装置的性能试验研究[J].工业建筑,2008,38(3):64-67.TAN Jing,QIU Lin-bo,ZHANG Yu-min,et al.Theproperty experimental study of the lateral and verticalcompound seismic isolation system[J].IndustrialConstruction,2008,38(3):64-67.(in Chinese)
[18]陆文遂.碟形弹簧的计算设计与制造[M].上海:复旦大学出版社,1980:6-58.
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