超大跨度斜拉桥的横向约束体系
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摘要
为了确定超大跨度斜拉桥的合理横向抗震约束体系,以苏通长江公路大桥为研究对象,采用非线性时程分析方法,分析了3种边墩、梁横向约束体系即横向滑动体系、全限位体系和减隔震体系(流体黏滞阻尼器连接体系)对超大跨度斜拉桥地震反应的影响,重点研究了阻尼器的合理设置方式及阻尼器参数。结果表明:对于超大跨度斜拉桥,横向滑动体系和全限位体系均不是理想的抗震体系;而在边墩、梁之间设置横向流体黏滞阻尼器可以显著减小边墩的横向内力以及梁端的横向位移,流体黏滞阻尼器应分散设置在各边墩上。
In order to find out the appropriate lateral seismic constraint system for super-long-span cable-stayed bridges,the seismic responses of super-long-span cable-stayed bridges with three lateral connection systems between side piers and girder were investigated,taking the Sutong Yangtze River Highway Bridge as studying object,and using the nonlinear time-history analysis method.The influences of three constraint systems,ie lateral sliding system,fixed system,and seismic isolation system adding fluid viscous dampers on the seismic response of cable-stayed bridge were investigated with focus on the damper arrangement and damper parameters.The results indicate that,for a superlong-span cable-stayed bridge,lateral sliding system and fixed system are all not appropriate constraint system;adding lateral fluid viscous dampers can effectively reduce the lateral internal forces of side piers and lateral displacement at the end of girder,and the dampers shall be placed on each side pier.
In order to find out the appropriate lateral seismic constraint system for super-long-span cable-stayed bridges,the seismic responses of super-long-span cable-stayed bridges with three lateral connection systems between side piers and girder were investigated,taking the Sutong Yangtze River Highway Bridge as studying object,and using the nonlinear time-history analysis method.The influences of three constraint systems,ie lateral sliding system,fixed system,and seismic isolation system adding fluid viscous dampers on the seismic response of cable-stayed bridge were investigated with focus on the damper arrangement and damper parameters.The results indicate that,for a superlong-span cable-stayed bridge,lateral sliding system and fixed system are all not appropriate constraint system;adding lateral fluid viscous dampers can effectively reduce the lateral internal forces of side piers and lateral displacement at the end of girder,and the dampers shall be placed on each side pier.
引文
[1]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 Li-chu,HU Shi-de,YE Ai-jun.Seismic Designof Long-span Bridges[M].Beijing:China Communica-tions Press,2001.
[2]陈政清.斜拉索风雨振现场观测与振动控制[J].建筑科学与工程学报,2005,22(4):5-10.CHEN Zheng-qing.On-site Observation of Wind-rainInduced Vibration of Stay Cables and Its Control[J].Journal of Architecture and Civil Engineering,2005,22(4):5-10.
[3]于泳波,万振江,刘健新.减震技术在公路桥梁中的应用及地震反应分析[J].长安大学学报:自然科学版,2004,24(2):58-60.YU Yong-bo,WAN Zhen-jiang,LIU Jian-xin.SeismicReduction Design for Highway Bridge and SeismicResponse[J].Journal of Chang an University:NaturalScience Edition,2004,24(2):58-60.
[4]梁鹏,徐岳,刘永健.斜拉索分析统一理论及其应用[J].建筑科学与工程学报,2006,23(1):68-77.LIANG Peng,XU Yue,LIU Yong-jian.Unified Anal-ysis Theory of Cable Stay and Its Applications[J].Journal of Architecture and Civil Engineering,2006,23(1):68-77.
[5]王晨曦,牛刚.常用桥梁伸缩装置问题分析[J].筑路机械与施工机械化,2005,22(8):44-45.WANG Chen-xi,NIU Gang.Analysis of Problems inBridge Flexing Equipment[J].Road Machinery&Construction Mechanization,2005,22(8):44-45.
[6]李忠献,黄健,丁阳,等.不同地震激励下大跨度斜拉桥的地震反应分析[J].中国公路学报,2005,18(3):48-53.LI Zhong-xian,HUANG Jian,DING Yang,et al.Seis-mic Responses of Long-span Cable-stayed BridgesUnder Different Patterns of Earthquake Excitations[J].China Journal of Highway and Transport,2005,18(3):48-53.
[7]邰扣霞,丁大钧.中国桥梁建设新飞跃[J].建筑科学与工程学报,2006,23(2):30-40.TAI Kou-xia,DING Da-jun.New Leaps in Construc-tion of Bridges in China[J].Journal of Architectureand Civil Engineering,2006,23(2):30-40.
[8]易伟建,张颖.混凝土框架结构抗震设计的弯矩增大系数[J].建筑科学与工程学报,2006,23(2):46-51.YI Wei-jian,ZHANG Ying.Moment MagnificationFactor in Anti-seismic Design of Concrete FrameStructure[J].Journal of Architecture and Civil Engi-neering,2006,23(2):46-51.
[9]刘健新,张伟,张茜.洛河特大桥抗震性能计算[J].交通运输工程学报,2006,6(1):57-62.LIU Jian-xin,ZHANG Wei,ZHANG Qian.Anti-seis-mic Performance Calculation of Luohe Bridge[J].Journal of Traffic and Transportation Engineering,2006,6(1):57-62.
[10]高剑,裴岷山.大跨度斜拉桥索梁锚箱空间受力分析[J].建筑科学与工程学报,2006,23(3):66-70.GAO Jian,PEI Min-shan.Analysis of Space Stress inAnchoring Box Between Cable and Beam of Long-span Cable-stayed Bridge[J].Journal of Architectureand Civil Engineering,2006,23(3):66-70.
[11]叶爱君,胡世德,范立础.斜拉桥抗震结构体系研究[J].桥梁建设,2002,144(4):1-4.YE Ai-jun,HU Shi-de,FAN Li-chu.Seismic Struc-tural System for Cable-stayed Bridges[J].Bridge Con-struction,2002,144(4):1-4.
[12]叶爱君,胡世德,范立础.超大跨度斜拉桥的地震位移控制[J].土木工程学报,2004,37(12):38-43.YE Ai-jun,HU Shi-de,FAN Li-chu.Seismic Dis-placement Control for Super-long-span Cable-stayedBridges[J].China Civil Engineering Journal,2004,37(12):38-43.
[13]ALI H M,ABDEL-GHAFFAR A M.Seismic EnergyDissipation for Cable-stayed Bridges Using PassiveDevices[J].Earthquake Engineering&Structure Dy-namics,1994,23(8):877-893.
[14]王志强,胡世德,范立础.东海大桥粘滞阻尼器参数研究[J].中国公路学报,2005,18(3):37-42.WANG Zhi-qiang,HU Shi-de,FAN Li-chu.Researchon Viscous Damper Parameters of Donghai Bridge[J].China Journal of Highway and Transport,2005,18(3):37-42.
[15]LIN W H,ANIL K C.Earthquake Response of Elas-tic SDF Systems with Non-linear Fluid ViscousDampers[J].Earthquake Engineering&StructureDynamics,2002,31(9):1 623-1 642.
[16]MAHENDRA P,SINGH F,NAVIN P,et al.SeismicAnalysis and Design with Maxwell Dampers[J].Jour-nal of Engineering Mechanics,2003,129(3):273-282.
[2]陈政清.斜拉索风雨振现场观测与振动控制[J].建筑科学与工程学报,2005,22(4):5-10.CHEN Zheng-qing.On-site Observation of Wind-rainInduced Vibration of Stay Cables and Its Control[J].Journal of Architecture and Civil Engineering,2005,22(4):5-10.
[3]于泳波,万振江,刘健新.减震技术在公路桥梁中的应用及地震反应分析[J].长安大学学报:自然科学版,2004,24(2):58-60.YU Yong-bo,WAN Zhen-jiang,LIU Jian-xin.SeismicReduction Design for Highway Bridge and SeismicResponse[J].Journal of Chang an University:NaturalScience Edition,2004,24(2):58-60.
[4]梁鹏,徐岳,刘永健.斜拉索分析统一理论及其应用[J].建筑科学与工程学报,2006,23(1):68-77.LIANG Peng,XU Yue,LIU Yong-jian.Unified Anal-ysis Theory of Cable Stay and Its Applications[J].Journal of Architecture and Civil Engineering,2006,23(1):68-77.
[5]王晨曦,牛刚.常用桥梁伸缩装置问题分析[J].筑路机械与施工机械化,2005,22(8):44-45.WANG Chen-xi,NIU Gang.Analysis of Problems inBridge Flexing Equipment[J].Road Machinery&Construction Mechanization,2005,22(8):44-45.
[6]李忠献,黄健,丁阳,等.不同地震激励下大跨度斜拉桥的地震反应分析[J].中国公路学报,2005,18(3):48-53.LI Zhong-xian,HUANG Jian,DING Yang,et al.Seis-mic Responses of Long-span Cable-stayed BridgesUnder Different Patterns of Earthquake Excitations[J].China Journal of Highway and Transport,2005,18(3):48-53.
[7]邰扣霞,丁大钧.中国桥梁建设新飞跃[J].建筑科学与工程学报,2006,23(2):30-40.TAI Kou-xia,DING Da-jun.New Leaps in Construc-tion of Bridges in China[J].Journal of Architectureand Civil Engineering,2006,23(2):30-40.
[8]易伟建,张颖.混凝土框架结构抗震设计的弯矩增大系数[J].建筑科学与工程学报,2006,23(2):46-51.YI Wei-jian,ZHANG Ying.Moment MagnificationFactor in Anti-seismic Design of Concrete FrameStructure[J].Journal of Architecture and Civil Engi-neering,2006,23(2):46-51.
[9]刘健新,张伟,张茜.洛河特大桥抗震性能计算[J].交通运输工程学报,2006,6(1):57-62.LIU Jian-xin,ZHANG Wei,ZHANG Qian.Anti-seis-mic Performance Calculation of Luohe Bridge[J].Journal of Traffic and Transportation Engineering,2006,6(1):57-62.
[10]高剑,裴岷山.大跨度斜拉桥索梁锚箱空间受力分析[J].建筑科学与工程学报,2006,23(3):66-70.GAO Jian,PEI Min-shan.Analysis of Space Stress inAnchoring Box Between Cable and Beam of Long-span Cable-stayed Bridge[J].Journal of Architectureand Civil Engineering,2006,23(3):66-70.
[11]叶爱君,胡世德,范立础.斜拉桥抗震结构体系研究[J].桥梁建设,2002,144(4):1-4.YE Ai-jun,HU Shi-de,FAN Li-chu.Seismic Struc-tural System for Cable-stayed Bridges[J].Bridge Con-struction,2002,144(4):1-4.
[12]叶爱君,胡世德,范立础.超大跨度斜拉桥的地震位移控制[J].土木工程学报,2004,37(12):38-43.YE Ai-jun,HU Shi-de,FAN Li-chu.Seismic Dis-placement Control for Super-long-span Cable-stayedBridges[J].China Civil Engineering Journal,2004,37(12):38-43.
[13]ALI H M,ABDEL-GHAFFAR A M.Seismic EnergyDissipation for Cable-stayed Bridges Using PassiveDevices[J].Earthquake Engineering&Structure Dy-namics,1994,23(8):877-893.
[14]王志强,胡世德,范立础.东海大桥粘滞阻尼器参数研究[J].中国公路学报,2005,18(3):37-42.WANG Zhi-qiang,HU Shi-de,FAN Li-chu.Researchon Viscous Damper Parameters of Donghai Bridge[J].China Journal of Highway and Transport,2005,18(3):37-42.
[15]LIN W H,ANIL K C.Earthquake Response of Elas-tic SDF Systems with Non-linear Fluid ViscousDampers[J].Earthquake Engineering&StructureDynamics,2002,31(9):1 623-1 642.
[16]MAHENDRA P,SINGH F,NAVIN P,et al.SeismicAnalysis and Design with Maxwell Dampers[J].Jour-nal of Engineering Mechanics,2003,129(3):273-282.
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