地震作用下曲线匝道桥梁伸缩缝碰撞响应
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摘要
针对曲线匝道桥梁的伸缩缝地震碰撞破坏现象,依托一座多层互通式立交体系中的单支带伸缩缝曲线匝道桥工程,用Kelvin接触单元模拟桥墩两联间伸缩缝和桥台处伸缩缝在地震作用下的碰撞效应。文章建立了包含墩柱、主梁、支座和伸缩缝的全桥空间动力模型,利用非线性时程分析法,针对2个计算模型,分别输入多种地震动工况,对比分析曲线匝道桥梁桥墩处伸缩缝和桥台处伸缩缝的地震碰撞响应差异,结果表明:取消桥台伸缩缝更利于曲线匝道桥跨结构抗震的概念。
Aimed at pounding damage of expansion joint in a curved ramp bridge under earthquake,relying on a multilevel junction system project,the pounding between expansion joints at pier table and abutment table under earthquake was simulated by using Kelvin contact element.The space dynamic model of a single curved ramp bridge including piers,beams,bearings and expansion joints was built.By using nonlinear time history analysis method,different pounding responses between expansion joints at pier table and abutment table of a curved ramp bridge in two computation models under different seismic conditions was compared.The result indicates that the curved ramp bridge without abutment expansion joints is more favorable for seismic resistance.
Aimed at pounding damage of expansion joint in a curved ramp bridge under earthquake,relying on a multilevel junction system project,the pounding between expansion joints at pier table and abutment table under earthquake was simulated by using Kelvin contact element.The space dynamic model of a single curved ramp bridge including piers,beams,bearings and expansion joints was built.By using nonlinear time history analysis method,different pounding responses between expansion joints at pier table and abutment table of a curved ramp bridge in two computation models under different seismic conditions was compared.The result indicates that the curved ramp bridge without abutment expansion joints is more favorable for seismic resistance.
引文
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[9]岳福青.地震作用下隔震高架桥梁的碰撞反应控制[D].天津:天津大学,2007.YUE Fuqing Pounding Responses and Control of IsolatedElevated Bridges during Earthquake[D].Tianjin:Tianjin University,2007.
[10]TROCHALAKIS P,EBERHARD M O,STANTON J F.Design of Seismic Restrainers for In-span Hinges[J].Journal of Structural Engineering,1997,123(4):469-478.
[11]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].JTG/T B02-01—2008,Guidelines for Seismic Design ofHighway Bridges[S].
[12]彭大文,罗朝专,林志平.整体式桥台曲线箱梁桥的动力特性研究[J]公路交通科技,2010,27(2):54-59.PENG Dawen,LUO Chaozhuan,LIN Zhiping.Researchon Dynamic Characteristics of Integral Abutment CurvedBox Girder Bridge[J].Journal of Highway andTransportation Research and Development,2010,27(2):54-59.
[2]阎兴华,韩淼.工程结构抗震设计[M].北京:中国计量出版社,2002.YAN Xinghua,HAN Miao.Engineering Structure SeismicDesign[M].Beijing:China Metrology PublishingHouse,2002.
[3]于海龙,朱烯.地震作用下简支梁桥梁间碰撞的反应性能[J].北方交通大学学报,2004,28(1):43-46.YU Hailong,ZHU Xi.Characteristic of PoundingResponse of the Simple-supported Bridges duringEarthquake[J].Journal of Northern Jiaotong University,2004,28(1):43-46.
[4]陈学喜,朱唏,高学奎.地震作用下桥梁梁体间的碰撞响应分析[J].中国铁道科学,2005,26(6):75-78.CHEN Xuexi,ZHU Xi,GAO Xuekui.Analysis on thePounding Responses between Adjacent Bridge Beams underEarthquakes[J].China Railway Science,2005,26(6):75-78.
[5]王军文,李建中,范立础.连续梁桥纵向地震碰撞反应参数研究[J].中国公路学报,2005,18(4):42-47.WANG Junwen,LI Jianzhong,FAN Lichu.ParametricStudy of Longitudinal Seismic Pounding Response forContinuous Girder Bridges[J].China Journal ofHighway and Transport,2005,18(4):42-47.
[6]JANKOWSKI R.Pounding Force Response Spectrumunder Earthquake Excitation[J].Engineering Structures,2006,28:1149-1161.
[7]JANKOWSKI R,WILDE K,FUJINO Y.Reduction ofPounding Effects in Elevated Bridges During Earthquakes[J].Earthquake Engineering and Structural Dynamics,2000,29(2):195-212.
[8]王东升,冯启民,王国新.基于直杆共轴碰撞理论的桥梁地震反应邻梁碰撞分析模型[J].工程力学,2004,21(2):157-165.WANG Dongsheng,FENG Qimin,WANG Guoxin.Analysis Model of Pounding between Adjacent BridgeGirders during Earthquakes Based on Collinear Impactbetween Rods[J].Engineering Mechanics,2004,21(2):157-165.
[9]岳福青.地震作用下隔震高架桥梁的碰撞反应控制[D].天津:天津大学,2007.YUE Fuqing Pounding Responses and Control of IsolatedElevated Bridges during Earthquake[D].Tianjin:Tianjin University,2007.
[10]TROCHALAKIS P,EBERHARD M O,STANTON J F.Design of Seismic Restrainers for In-span Hinges[J].Journal of Structural Engineering,1997,123(4):469-478.
[11]JTG/T B02-01—2008,公路桥梁抗震设计细则[S].JTG/T B02-01—2008,Guidelines for Seismic Design ofHighway Bridges[S].
[12]彭大文,罗朝专,林志平.整体式桥台曲线箱梁桥的动力特性研究[J]公路交通科技,2010,27(2):54-59.PENG Dawen,LUO Chaozhuan,LIN Zhiping.Researchon Dynamic Characteristics of Integral Abutment CurvedBox Girder Bridge[J].Journal of Highway andTransportation Research and Development,2010,27(2):54-59.
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