限位装置对桩基础高墩摇摆反应的影响
|
摘要
提出了限位装置的模拟方法,完善了桩基础高墩摇摆隔震的分析模型.基于某铁路高墩桥梁,输入3条强震记录,采用非线性时程分析方法进行了限位装置的影响分析.讨论了限位装置初始间隙及屈服力的变化对墩顶位移与墩底弯矩的影响规律.结果表明,限位装置减小墩顶位移的同时会增大墩底弯矩,墩顶位移受限位装置初始间隙的影响较大,墩底弯矩受限位装置初始间隙的影响较小,桩基础高墩的摇摆反应受限位装置屈服力的影响较大.
Modeling method of the restrainers was proposed for the seismic analysis of the tall pier-pile foundations rocking isolated system.Effect of the restrainer on the rocking response of a railway tall pier was investigated through nonlinear time history analysis by inputting three strong ground motions.The displacement at the top and the moment at the bottom of the pier are discussed as functions of the initial gap and yielding force of the restrainer.The results show that the restrainer decreases the displacement at pier top,while it increases the base moment.The initial gap of restrainer has greater effect on the top displacement than the base moment.It is also observed that the yield force of restrainer affects the rocking response of the tall pier-pile foundations isolated system significantly.
Modeling method of the restrainers was proposed for the seismic analysis of the tall pier-pile foundations rocking isolated system.Effect of the restrainer on the rocking response of a railway tall pier was investigated through nonlinear time history analysis by inputting three strong ground motions.The displacement at the top and the moment at the bottom of the pier are discussed as functions of the initial gap and yielding force of the restrainer.The results show that the restrainer decreases the displacement at pier top,while it increases the base moment.The initial gap of restrainer has greater effect on the top displacement than the base moment.It is also observed that the yield force of restrainer affects the rocking response of the tall pier-pile foundations isolated system significantly.
引文
[1]Panagiotis Elia Mergos,Kazuhiko Kawashima.Rocking isolation of a typical bridge pier on spread foundation[J].Journal of Earthquake Engineering,2005,9(2):395.
[2]Alessandro P,Stefano P,Gian M C.Concept and development of hybrid solutions for seismic resistant bridge systems[J].Journal of Earthquake Engineering,2005,9(6):899.
[3]王荣辉,曾庆元,舒文超.钢球-限位系统隔离桥梁结构水平地震作用的试验及分析[J].实验力学,1999,14(1):19.WANG Ronghui,ZENG Qingyuan,SHU Wenchao.An earthquake isolation system for bridge piers[J].Journal of Experimental Mechanics,1999,14(1):19.
[4]CHEN Yihsuan,LIAO Weihsin,LEE Chienliang,et al.Seismic isolation of viaduct piers by means of a rocking mechanism[J].Earthquake Engineering and Structural Dynamics,2006,35:713.
[5]Alain Pierre.Design and construction of the Rion Antirion bridge[J].Geotechnical and Engineering for Transportation Projects,2004,216.
[6]夏修身,陈兴冲.铁路高墩桥梁基底转动隔震与墩顶减震的效果对比研究[J].铁道学报,2011,33(9):102.XIA Xiushen,CHEN Xingchong.Controlled rocking and pier top seismic isolation of railway bridge with tall piers[J].Journal of the China Railway Society,2011,33(9):102.
[7]洪晓慧,葛伊仁,刘光晏,等.考虑直接基础摇摆机制之桥梁耐震性能研究(III)[R].台湾:地震工程研究中心,2010.HUNG Hsiaohui,GE Ireng,LIU Kuangyen,et al.Seismic performance of bridge with rocking spread footing[R].Taiwan:Center for Research on Earthquake Engineering,2010.
[8]Saiidi M,Randall M,Maragakis E,et al.Seismic restrainer design methods for simply supported bridges[J].Journal of Bridge Engineering,2001,6(5):307.
[9]Trochalakis P,Eberhard M O,Stanton J F.Design of seismic restrainers for in-span hinges[J].Journal of Structural Engineering,1997,123(4):469.
[10]王军文,李建中,范立础.桥梁中抗震限位装置设计方法的研究[J].土木工程学,2006,39(11):90.WANG Junwen,LI Jianzhong,FAN Lichu.A study on the design method of seismic restrainers for bridges[J].China Civil Engineering Journal,2006,39(11):90.
[11]戴福洪,翟桐.桥梁限位器抗震设计方法研究[J].地震工程与工程振动,2002,22(2):73.DAI Fuhong,ZHAI Tong.Study on aseismic design method of restrainers for highway bridge[J].Earthquake Engineering and Engineering Vibration,2002,22(2):73.
[12]高玉峰,蒲黔辉,李晓斌.梁式桥地震碰撞响应及防碰撞与落梁措施研究进展[J].地震工程与工程振动,2011,31(1):80.GAO Yufeng,PU Qianhui,LI Xiaobin.State-of-arts of earthquake-induced pounding responses of girder bridges and measures for preventing pounding and span collapse[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(1):80.
[2]Alessandro P,Stefano P,Gian M C.Concept and development of hybrid solutions for seismic resistant bridge systems[J].Journal of Earthquake Engineering,2005,9(6):899.
[3]王荣辉,曾庆元,舒文超.钢球-限位系统隔离桥梁结构水平地震作用的试验及分析[J].实验力学,1999,14(1):19.WANG Ronghui,ZENG Qingyuan,SHU Wenchao.An earthquake isolation system for bridge piers[J].Journal of Experimental Mechanics,1999,14(1):19.
[4]CHEN Yihsuan,LIAO Weihsin,LEE Chienliang,et al.Seismic isolation of viaduct piers by means of a rocking mechanism[J].Earthquake Engineering and Structural Dynamics,2006,35:713.
[5]Alain Pierre.Design and construction of the Rion Antirion bridge[J].Geotechnical and Engineering for Transportation Projects,2004,216.
[6]夏修身,陈兴冲.铁路高墩桥梁基底转动隔震与墩顶减震的效果对比研究[J].铁道学报,2011,33(9):102.XIA Xiushen,CHEN Xingchong.Controlled rocking and pier top seismic isolation of railway bridge with tall piers[J].Journal of the China Railway Society,2011,33(9):102.
[7]洪晓慧,葛伊仁,刘光晏,等.考虑直接基础摇摆机制之桥梁耐震性能研究(III)[R].台湾:地震工程研究中心,2010.HUNG Hsiaohui,GE Ireng,LIU Kuangyen,et al.Seismic performance of bridge with rocking spread footing[R].Taiwan:Center for Research on Earthquake Engineering,2010.
[8]Saiidi M,Randall M,Maragakis E,et al.Seismic restrainer design methods for simply supported bridges[J].Journal of Bridge Engineering,2001,6(5):307.
[9]Trochalakis P,Eberhard M O,Stanton J F.Design of seismic restrainers for in-span hinges[J].Journal of Structural Engineering,1997,123(4):469.
[10]王军文,李建中,范立础.桥梁中抗震限位装置设计方法的研究[J].土木工程学,2006,39(11):90.WANG Junwen,LI Jianzhong,FAN Lichu.A study on the design method of seismic restrainers for bridges[J].China Civil Engineering Journal,2006,39(11):90.
[11]戴福洪,翟桐.桥梁限位器抗震设计方法研究[J].地震工程与工程振动,2002,22(2):73.DAI Fuhong,ZHAI Tong.Study on aseismic design method of restrainers for highway bridge[J].Earthquake Engineering and Engineering Vibration,2002,22(2):73.
[12]高玉峰,蒲黔辉,李晓斌.梁式桥地震碰撞响应及防碰撞与落梁措施研究进展[J].地震工程与工程振动,2011,31(1):80.GAO Yufeng,PU Qianhui,LI Xiaobin.State-of-arts of earthquake-induced pounding responses of girder bridges and measures for preventing pounding and span collapse[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(1):80.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心