动水及桩-土-结构相互作用对跨江大桥稳定性的地震影响分析
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摘要
为了得到更为符合实际情况的跨江大桥动力稳定性的地震反应分析,在桥梁抗震研究中必须综合考虑动水及桩–土–结构的相互作用。基于此,根据Poisson方程,利用Trefftz函数和微波理论建立求解地震中桥墩表面动水压力的计算方程;由线性化的Morison公式,给出计算地震中动水能量对桩体的波浪推力方程;同时,引入改进的Penzien模型,对桩–土–结构的地震效应进行分析。采用该方法对国内某跨江大桥进行动力反应时程分析,计算结果显示,该方法简单有效,且具有较高的计算精度。
In order to achieve the better response analysis of river-spanning bridge,the dynamic water and pile-soil-structure interaction are considered.Based on the Poisson equation,Trefftz functions and wavelet theory are used to form the equation to hydrodynamic pressure on pier which is induced by earthquake.Using the linear Morison equation,the formulas to study hydrodynamic energy of the wave forces on piles are proposed.Simultaneity,using the modified Penzien model,the seismic effect on pile-soil-structure was analyzed.Simulation of seismic response for a river-spanning bridge was analyzed with the given theory;and the simulated results show that this approach is simple and effective.
In order to achieve the better response analysis of river-spanning bridge,the dynamic water and pile-soil-structure interaction are considered.Based on the Poisson equation,Trefftz functions and wavelet theory are used to form the equation to hydrodynamic pressure on pier which is induced by earthquake.Using the linear Morison equation,the formulas to study hydrodynamic energy of the wave forces on piles are proposed.Simultaneity,using the modified Penzien model,the seismic effect on pile-soil-structure was analyzed.Simulation of seismic response for a river-spanning bridge was analyzed with the given theory;and the simulated results show that this approach is simple and effective.
引文
[1]李玉成,滕斌.波浪对海上建筑物的作用[M].北京:海洋出版社,1993.(Li Yucheng,Teng Bin.Wave Action to Maritime Structure[M].Beijing:China Ocean Press,1993.(in Chinese))
[2]房营光,孙钧.平台-群桩-水流-土体系统的地震反应分析[J].土木工程学报,1998,31(5):56-60.(Fang Yingguang,Sun Jun.Earthquake response analysis of platform-pile group-water-soil system[J].China Civil Engineering Journal,1998,31(5):56-60.(in Chinese))
[3]Liaw C Y,Chopra A K.Dynamics of towers surrounded by water[J].J.Earthquake Engng.Struc.Dynamics,1974,18(3):32-33.
[4]Nilrat F Berkeley.Hydrodynamic pressure and added mass for axisymmetric bodies[R].[s.1.]:Earthquake Engineering Research Center,1980.
[5]Yoshihiro T,Robert T H.Restoring forces on vertical circular cylinders forced by earthquakes[J].Earthquake Engineering and Structural Dynamics,1988,16(5):98-102.
[6]Anthony N W.Earthquake response of submerged circular cylinder[J].Ocean Engineering,1986,13(6):570-584.
[7]赖伟,王君杰,胡世德.地震下桥墩动水压力分析[J].同济大学学报,2004,32(1):1-5.(Lai Wei,Wang Junjie,Hu Shide.Earthquake induced hydrodynamic pressure on bridge pier[J].Journal of Tongji University,2004,32(1):1-5.(in Chinese))
[8]孙利民,章晨南,潘龙,等.桥梁桩土相互作用的集中质量模型及参数确定[J].同济大学学报,2002,30(4):409-415.(Sun Limin,Zhang Chennan,Pan Long,et al.Lumped-mass model and its parameters for dynamic analysis of bridge pier-pile-soil system[J].Journal of Tongji University,2002,30(4):409-415.(in Chinese))
[9]王君杰,孙利民,张宁勇.跨海桥梁地震反应特性[A].见:新世纪地震工程与防震减灾[C].北京:地震出版社,2002.(Wang Junjie,Sun Limin,Zhang Ningyong.Earthquake response characteristic of spanning ocean[A].In:Seism Engineering and Disaster Prevention and Mitigation in New Century[C].Beijing:Earthquake Press,2002.(in Chinese))
[10]范立础,胡世德,叶爱君.大跨度桥梁抗震设计[M].北京:人民交通出版社,2001.(Fan Lichu,Hu Shide,Ye Aijun.Anti-seismic Design of Long-span Bridges[M].Beijing:China Communications Press,2001.(in Chinese))
[11]李国豪.桥梁结构稳定与振动[M].北京:中国铁道出版社,1996.(Li Guohao.Stability and Vibration of Bridge Structure[M].Beijing:China Railway Publishing House,1996.(in Chinese))
[12]屈爱平,高淑英.梁-墩-桩基的动力特性研究[J].西南交通大学学报,2001,36(6):641-644.(Qu Aiping,Gao Shuying.Vibration characteristics of a three-dimensional beam-pier-pile system[J].Journal of Southwest Jiaotong University,2001,36(6):641-644.(in Chinese))
[13]李彤.地震作用下土-群桩-结构-水相互作用体系的动力反应分析[硕士学位论文][D].上海:同济大学,1999.(Li Tong.Dynamic response analysis of soil-pile group-structure-water under earthquake[M.S.Thesis][D].Shanghai:Tongji University,1999.(in Chinese))
[14]夏志华.大跨度连续刚构桥地震反应分析[硕士学位论文][D].成都:西南交通大学,2003.(Xia Zhihua.Earthquake response analysis of long-span continuous rigid frame bridge[M.S.Thesis][D].Chengdu:Southwest Jiaotong University,2003.(in Chinese))
[2]房营光,孙钧.平台-群桩-水流-土体系统的地震反应分析[J].土木工程学报,1998,31(5):56-60.(Fang Yingguang,Sun Jun.Earthquake response analysis of platform-pile group-water-soil system[J].China Civil Engineering Journal,1998,31(5):56-60.(in Chinese))
[3]Liaw C Y,Chopra A K.Dynamics of towers surrounded by water[J].J.Earthquake Engng.Struc.Dynamics,1974,18(3):32-33.
[4]Nilrat F Berkeley.Hydrodynamic pressure and added mass for axisymmetric bodies[R].[s.1.]:Earthquake Engineering Research Center,1980.
[5]Yoshihiro T,Robert T H.Restoring forces on vertical circular cylinders forced by earthquakes[J].Earthquake Engineering and Structural Dynamics,1988,16(5):98-102.
[6]Anthony N W.Earthquake response of submerged circular cylinder[J].Ocean Engineering,1986,13(6):570-584.
[7]赖伟,王君杰,胡世德.地震下桥墩动水压力分析[J].同济大学学报,2004,32(1):1-5.(Lai Wei,Wang Junjie,Hu Shide.Earthquake induced hydrodynamic pressure on bridge pier[J].Journal of Tongji University,2004,32(1):1-5.(in Chinese))
[8]孙利民,章晨南,潘龙,等.桥梁桩土相互作用的集中质量模型及参数确定[J].同济大学学报,2002,30(4):409-415.(Sun Limin,Zhang Chennan,Pan Long,et al.Lumped-mass model and its parameters for dynamic analysis of bridge pier-pile-soil system[J].Journal of Tongji University,2002,30(4):409-415.(in Chinese))
[9]王君杰,孙利民,张宁勇.跨海桥梁地震反应特性[A].见:新世纪地震工程与防震减灾[C].北京:地震出版社,2002.(Wang Junjie,Sun Limin,Zhang Ningyong.Earthquake response characteristic of spanning ocean[A].In:Seism Engineering and Disaster Prevention and Mitigation in New Century[C].Beijing:Earthquake Press,2002.(in Chinese))
[10]范立础,胡世德,叶爱君.大跨度桥梁抗震设计[M].北京:人民交通出版社,2001.(Fan Lichu,Hu Shide,Ye Aijun.Anti-seismic Design of Long-span Bridges[M].Beijing:China Communications Press,2001.(in Chinese))
[11]李国豪.桥梁结构稳定与振动[M].北京:中国铁道出版社,1996.(Li Guohao.Stability and Vibration of Bridge Structure[M].Beijing:China Railway Publishing House,1996.(in Chinese))
[12]屈爱平,高淑英.梁-墩-桩基的动力特性研究[J].西南交通大学学报,2001,36(6):641-644.(Qu Aiping,Gao Shuying.Vibration characteristics of a three-dimensional beam-pier-pile system[J].Journal of Southwest Jiaotong University,2001,36(6):641-644.(in Chinese))
[13]李彤.地震作用下土-群桩-结构-水相互作用体系的动力反应分析[硕士学位论文][D].上海:同济大学,1999.(Li Tong.Dynamic response analysis of soil-pile group-structure-water under earthquake[M.S.Thesis][D].Shanghai:Tongji University,1999.(in Chinese))
[14]夏志华.大跨度连续刚构桥地震反应分析[硕士学位论文][D].成都:西南交通大学,2003.(Xia Zhihua.Earthquake response analysis of long-span continuous rigid frame bridge[M.S.Thesis][D].Chengdu:Southwest Jiaotong University,2003.(in Chinese))
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