高烈度区多跨刚构连续梁桥减隔震设计研究
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摘要
研究目的:结合处于高烈度区的某(48+4×80+48)m刚构连续梁桥的工程实例,分析对比对长联多跨刚构连续梁桥分别应用液体黏滞阻尼器、Lock-up装置、双曲面球型减隔震支座以及减震榫的减隔震效果,并对影响减隔震效果的相关参数进行分析研究,为合理选择减隔震措施提供依据。研究结论:(1)位于高烈度区的长联多跨刚构连续梁桥,刚构墩的地震响应较大,需要进行减隔震设计;(2)液体黏滞阻尼器、Lock-up装置、双曲面球型减隔震支座以及减震榫这四种减隔震设计措施均有各自的优点及局限性,前两种只适用于顺桥向减隔震设计,后两种在顺桥向、横桥向均能达到明显的减隔震效果;(3)针对高烈度区的长联多跨刚构连续梁桥,合理地选择减隔震措施及相关参数具有重要意义;(4)研究成果可应用于指导桥梁抗震设计。
Research purposes: Combined with construction of a(48+4×80+48)m rigid frame-continuous girder bridge in a high seismic intensity area,the effects of applying the fluid viscous damper,lock-up device,double spherical seismic isolation bearing and shock absorber to the long multi-span rigid frame-continuous girder bridge are analyzed and compared respectively,and the main parameters that affect to the effect of seismic isolation design are discussed to provide the basis for the reasonable selection of seismic isolation measures. Research conclusions:(1) It is necessary to make the seismic design for the long multi-span rigid frame-continuous girder bridge in a high seismic intensity area because the seismic response to the rigid frame pier is rather big.(2) The analysis results show that the four seismic isolation measures of using the fluid viscous damper,lock-up device,double spherical seismic isolation bearing and shock absorber have their own advantages and disadvantages.The first two measures are only available for the bridge in longitudinal direction.The latter two measures are available for the bridge in both longitudinal direction and in transverse direction.(3) Reasonably selecting seismic isolation measure and its main parameters is very important to the seismic design of long multi-span rigid frame-continuous girder bridges in a high seismic intensity area.(4) The research results can be used in guiding for seismic design of bridge.
Research purposes: Combined with construction of a(48+4×80+48)m rigid frame-continuous girder bridge in a high seismic intensity area,the effects of applying the fluid viscous damper,lock-up device,double spherical seismic isolation bearing and shock absorber to the long multi-span rigid frame-continuous girder bridge are analyzed and compared respectively,and the main parameters that affect to the effect of seismic isolation design are discussed to provide the basis for the reasonable selection of seismic isolation measures. Research conclusions:(1) It is necessary to make the seismic design for the long multi-span rigid frame-continuous girder bridge in a high seismic intensity area because the seismic response to the rigid frame pier is rather big.(2) The analysis results show that the four seismic isolation measures of using the fluid viscous damper,lock-up device,double spherical seismic isolation bearing and shock absorber have their own advantages and disadvantages.The first two measures are only available for the bridge in longitudinal direction.The latter two measures are available for the bridge in both longitudinal direction and in transverse direction.(3) Reasonably selecting seismic isolation measure and its main parameters is very important to the seismic design of long multi-span rigid frame-continuous girder bridges in a high seismic intensity area.(4) The research results can be used in guiding for seismic design of bridge.
引文
[1]范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001.Fan Lichu,Wang Zhiqiang.Seismic Isolation Designfor Bridges[M].Beijing:China Communications Press,2001.
[2]GB50111—2006,铁路工程抗震设计规范[S].GB 50111—2006,Code for Seismic Design of RailwayEngineering[S].
[3]范立础,李建中,王君杰.高架桥梁抗震设计[M].北京:人民交通出版社,2001.Fan Lichu,Li Jianzhong,Wang Junjie.Seismic Designfor Viaducts[M].Beijing:China CommunicationsPress,2001.
[4]TB10002.5—2005,铁路桥涵地基和基础设计规范[S].TB 10002.5—2005,Code for Design on Subsoil andFoundation of Railway Bridge and Culvert[S].
[5]陈永祁,耿瑞琦,马良喆.桥梁用液体黏滞阻尼器的减振设计和类型选择[J].土木工程学报,2007(7):55-61.Chen Yongqi,Geng Ruiqi,Ma Liangzhe.Design andSelection of Fluid Viscous Devices for Shock Control ofBridges[J].China Civil Engineering Journal,2007(7):55-61.
[6]彭天波,李建中,范立础.双曲面球型减隔震支座的开发及应用[J].同济大学学报(自然科学版),2007(2):176-180.Peng Tianbo,Li Jianzhong,Fan Lichu.Developmentand Application of Double Spherical Aseismic Bearing[J].Journal of Tongji University(Natural Science),2007(2):176-180.
[7]高日,李承根.汶川地震思考及铁路桥梁“支座功能分离”减震设计方法[J].铁道工程学报,2008(S):202-207.Gao Ri,Li Chenggen.Consideration the WenchuanEarthquake and Vibration-relief Design Method withBearing Functional Separation for Railwway Bridge[J].Journal of Railway Engineering Society,2008(S):202-207.
[8]徐秀丽,段好安,郎冬梅,等.预应力混凝土大跨连续梁桥隔震设计[J].公路交通科技,2009(8):46-50.Xu Xiuli,Duan Haoan,Lang Dongmei,etc.SeismicIsolation Design for Long-span Prestressed ContinuousGird Bridge[J].Journal of Highway andTransportation Research and Development,2009(8):46-50.
[9]鲁传安,胡世德,叶爱君.强震区大跨高墩连续梁桥抗震性能研究[J].结构工程师,2007(6):56-61.Lu Chuanan,Hu Shide,Ye Aijun.Study on SeismicPerformance for Long Span and High Pier ContinuousGirder Bridges in Severe Earthquake Region[J].Structural Engineers,2007(6):56-61.
[10]郭磊,李建中,范立础.大跨度连读梁桥减隔震设计研究[J].土木工程学报,2006(3):81-85.Guo Lei,Li Jianzhong,Fan Lichu.Research on SeismicIsolation Design for Long-span Continuous Bridges[J].China Civil Engineering Journal,2006(3):81-85.
[2]GB50111—2006,铁路工程抗震设计规范[S].GB 50111—2006,Code for Seismic Design of RailwayEngineering[S].
[3]范立础,李建中,王君杰.高架桥梁抗震设计[M].北京:人民交通出版社,2001.Fan Lichu,Li Jianzhong,Wang Junjie.Seismic Designfor Viaducts[M].Beijing:China CommunicationsPress,2001.
[4]TB10002.5—2005,铁路桥涵地基和基础设计规范[S].TB 10002.5—2005,Code for Design on Subsoil andFoundation of Railway Bridge and Culvert[S].
[5]陈永祁,耿瑞琦,马良喆.桥梁用液体黏滞阻尼器的减振设计和类型选择[J].土木工程学报,2007(7):55-61.Chen Yongqi,Geng Ruiqi,Ma Liangzhe.Design andSelection of Fluid Viscous Devices for Shock Control ofBridges[J].China Civil Engineering Journal,2007(7):55-61.
[6]彭天波,李建中,范立础.双曲面球型减隔震支座的开发及应用[J].同济大学学报(自然科学版),2007(2):176-180.Peng Tianbo,Li Jianzhong,Fan Lichu.Developmentand Application of Double Spherical Aseismic Bearing[J].Journal of Tongji University(Natural Science),2007(2):176-180.
[7]高日,李承根.汶川地震思考及铁路桥梁“支座功能分离”减震设计方法[J].铁道工程学报,2008(S):202-207.Gao Ri,Li Chenggen.Consideration the WenchuanEarthquake and Vibration-relief Design Method withBearing Functional Separation for Railwway Bridge[J].Journal of Railway Engineering Society,2008(S):202-207.
[8]徐秀丽,段好安,郎冬梅,等.预应力混凝土大跨连续梁桥隔震设计[J].公路交通科技,2009(8):46-50.Xu Xiuli,Duan Haoan,Lang Dongmei,etc.SeismicIsolation Design for Long-span Prestressed ContinuousGird Bridge[J].Journal of Highway andTransportation Research and Development,2009(8):46-50.
[9]鲁传安,胡世德,叶爱君.强震区大跨高墩连续梁桥抗震性能研究[J].结构工程师,2007(6):56-61.Lu Chuanan,Hu Shide,Ye Aijun.Study on SeismicPerformance for Long Span and High Pier ContinuousGirder Bridges in Severe Earthquake Region[J].Structural Engineers,2007(6):56-61.
[10]郭磊,李建中,范立础.大跨度连读梁桥减隔震设计研究[J].土木工程学报,2006(3):81-85.Guo Lei,Li Jianzhong,Fan Lichu.Research on SeismicIsolation Design for Long-span Continuous Bridges[J].China Civil Engineering Journal,2006(3):81-85.
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