摩擦摆支座在高速铁路桥梁中的隔震性能研究
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摘要
以我国高速铁路桥梁为例,建立合理的摩擦摆隔震桥梁力学模型,并通过数值模拟,对摩擦摆支座在高速铁路桥梁上的隔震效果进行研究。研究结果表明:建立隔震桥梁双自由度力学模型,能够较为准确地计算出隔震桥梁的地震响应;选用不同地震波,摩擦摆摩擦因数对高铁主梁最大位移影响规律不同;通过在桥墩与主梁间设置摩擦摆隔震装置,高铁桥梁主梁加速度、墩底剪力、墩顶位移隔震率分别可以达到40%、35%、50%;墩底剪力、主梁位移响应幅值随着桥墩高度增加有很大增加。
Taking Chinese high-speed railway bridge as an example, a reasonable double degree-of-freedom mechanical model of FPB isolation bridge was established,and the isolation effect of FPB isolation bridge was studied through numerical simulation. The results show that the model can more accurately calculate the seismic response of isolated bridges; with different seismic waves,the friction coefficient of FPB has different effects on the displacement response of the bridge girder; the isolation rates of acceleration of bridge girder,shear of the bottom of pier,displacement of the top of pier can reach 40%、35%、50% respectively; shear of the bottom of pier and displacement of bridge girder have a large increase when the height of pier increases.
Taking Chinese high-speed railway bridge as an example, a reasonable double degree-of-freedom mechanical model of FPB isolation bridge was established,and the isolation effect of FPB isolation bridge was studied through numerical simulation. The results show that the model can more accurately calculate the seismic response of isolated bridges; with different seismic waves,the friction coefficient of FPB has different effects on the displacement response of the bridge girder; the isolation rates of acceleration of bridge girder,shear of the bottom of pier,displacement of the top of pier can reach 40%、35%、50% respectively; shear of the bottom of pier and displacement of bridge girder have a large increase when the height of pier increases.
引文
[1]郑健.中国高速铁路桥梁[M].北京:高等教育出版社,2008Zheng J.Chinese high-speed railway bridge[M].Beijing:Hihger Education Press,2008(in Chinese)
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[4]张春浓.隔震桥梁的理论分析与振动台试验研究[D].北京:北京工业大学,2004Zhang C N.Theoretical analysis and shaking table test of isolated bridges[D].Beijing:Beijing University of Technology,2004(in Chinese)
[5]Anderson E L.Performance-based design of seismically isolated bridges[D].University of California,Berkley,2003
[6]Warn G P,Whittaker A S.Performance estimates in seismically isolated bridge structures[J].Engineering Structures,2004,26:1261-1278
[7]王丽,阎贵平,方有亮.隔震桥梁非线性地震反应分析[J].北方交通大学学报,2002,26(1):80-84Wang L,Yan G P,Fang Y L.Nonlinear seismic response analysis of isolation bridges[J].Journal of Northern Jiaotong University,2002,26(1):80-84(in Chinese)
[8]张贞阁,钟铁毅,王丽.铁路连续桥梁铅芯橡胶支座的减隔震研究[J].中国安全科学学报,2003,3(5):41-45Zhang Z G,Zhong T Y,Wang L.Study on vibration absorption and isolation of continuous beam railway bridge by lead cored rubber buffer[J].China Safety Science Journal,2003,13(5):41-45(in Chinese)
[9]陈永祁,杨凤利,刘林.摩擦摆隔震桥梁的设计及应用[J].工业建筑,2009,39(增刊):256-561Chen Y Q,Yang F L,Liu L.Design and application of friction pendulum bearing for seismic isolated bridges[J].Industrial Construction,2009,39(Supp):256-561(in Chinese)
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[11]曾聪,陶忠,潘文,等.PTEE-不锈钢摩擦滑移隔震支座摩擦系数的影响因素研究[J].工程抗震与加固改造,2009,31(1):58-63Zeng C,Tao Z,Pan W,et al.Research of the influence factors of the friction coefficient between PTEE and stainless steel plate of FPE[J].Earthquake Resistant Engineering and Retrofitting,2009,31(1):58-63(in Chinese)
[12]张相庭.结构振动力学[M].上海:同济大学出版社,2005.Zhang X T.Structure vibration mechanical[M].Shanghai:Tongji Universiyt Press,2005(in Chinese)
[13]陈昌宏.SAP2000结构工程案例分析[M].北京:冶金工业出版社,2010Chen C H.SAP2000 Analysis of structural engineering case[M].Beijing:Metallurgical Industry Press,2010(in Chinese)
[14]GB50011-2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2010GB50011-2010,Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese)
[15]GB50111-2006.铁路工程抗震设计规范[S].北京:中国建筑工业出版社,2009Code for seismic design of railway engineering[S].Beijing:China Architecture&Building Press,2009(in Chinese)
[2]孙数礼.高速铁路桥梁设计与实践[M].北京:中国铁道出版社,2011Sun S L.Design and practice of high-speed railway brideges[M].Beijng:China Railway Publishing House,2011(in Chinese)
[3]杨风利.铁路桥梁减隔震设计方法及设计参数研究[D].北京:北京交通大学,2007Yang F L.Study on design method and parameters for seismically isolated railway bridges[D].Beijing:Beijing Jiaotong University,2007(in Chinese)
[4]张春浓.隔震桥梁的理论分析与振动台试验研究[D].北京:北京工业大学,2004Zhang C N.Theoretical analysis and shaking table test of isolated bridges[D].Beijing:Beijing University of Technology,2004(in Chinese)
[5]Anderson E L.Performance-based design of seismically isolated bridges[D].University of California,Berkley,2003
[6]Warn G P,Whittaker A S.Performance estimates in seismically isolated bridge structures[J].Engineering Structures,2004,26:1261-1278
[7]王丽,阎贵平,方有亮.隔震桥梁非线性地震反应分析[J].北方交通大学学报,2002,26(1):80-84Wang L,Yan G P,Fang Y L.Nonlinear seismic response analysis of isolation bridges[J].Journal of Northern Jiaotong University,2002,26(1):80-84(in Chinese)
[8]张贞阁,钟铁毅,王丽.铁路连续桥梁铅芯橡胶支座的减隔震研究[J].中国安全科学学报,2003,3(5):41-45Zhang Z G,Zhong T Y,Wang L.Study on vibration absorption and isolation of continuous beam railway bridge by lead cored rubber buffer[J].China Safety Science Journal,2003,13(5):41-45(in Chinese)
[9]陈永祁,杨凤利,刘林.摩擦摆隔震桥梁的设计及应用[J].工业建筑,2009,39(增刊):256-561Chen Y Q,Yang F L,Liu L.Design and application of friction pendulum bearing for seismic isolated bridges[J].Industrial Construction,2009,39(Supp):256-561(in Chinese)
[10]庄军生.桥梁减震、隔震支座和装置[M].北京:中国铁道出版社,2012Zhuang J S.Bridge isolation bearings and device[M].Beijing:China Railway Publishing House,2012(in Chinese)
[11]曾聪,陶忠,潘文,等.PTEE-不锈钢摩擦滑移隔震支座摩擦系数的影响因素研究[J].工程抗震与加固改造,2009,31(1):58-63Zeng C,Tao Z,Pan W,et al.Research of the influence factors of the friction coefficient between PTEE and stainless steel plate of FPE[J].Earthquake Resistant Engineering and Retrofitting,2009,31(1):58-63(in Chinese)
[12]张相庭.结构振动力学[M].上海:同济大学出版社,2005.Zhang X T.Structure vibration mechanical[M].Shanghai:Tongji Universiyt Press,2005(in Chinese)
[13]陈昌宏.SAP2000结构工程案例分析[M].北京:冶金工业出版社,2010Chen C H.SAP2000 Analysis of structural engineering case[M].Beijing:Metallurgical Industry Press,2010(in Chinese)
[14]GB50011-2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2010GB50011-2010,Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese)
[15]GB50111-2006.铁路工程抗震设计规范[S].北京:中国建筑工业出版社,2009Code for seismic design of railway engineering[S].Beijing:China Architecture&Building Press,2009(in Chinese)
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