非规则连续梁桥减隔震支座的合理布置
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摘要
非规则连续梁桥墩高差异较大,地震反应复杂,传统的单固定墩抗震支座布置会使各墩之间地震力分配不合理。基于某两联三跨连续梁桥,探讨了水平地震力在非规则连续梁桥高矮墩之间的分配问题。采用非线性时程分析方法,分析了多种参数下的高阻尼橡胶支座与四氟滑板支座及板式橡胶支座与四氟滑板支座组合下各墩地震力的分配规律,并与传统单固定墩的地震力分配进行了比较。结果表明:高阻尼橡胶支座与滑板支座组合可使水平地震力在非规则连续梁桥的各墩之间得到合理分配。非规则连续梁桥可通过减隔震支座的合理布置获得较好抗震性能。
The piers of irregular continuous girder bridge have large height difference each other and complex earthquake response. The earthquake force distribution of traditional single fixed pier aseismatic bearing is irrational.Based on a three-span and two-connection continuous girder bridge. This paper proposes a discussion on the problem of horizontal earthquake force distribution in high and low piers in continuous girder bridges. Comparing with earthquake force distribution in traditional single fixed pier,nonlinear time-history method was used in this paper to analysis the distribution law of earthquake force in piers which have combination of high damping rubber bearings and teflon slide type bearings and combination of laminated rubber bearings and teflon slide type bearings. The analysis results show that the combination of high damping rubber bearings and teflon slide type bearings can make earthquake force distributed rationally among piers in irregular continuous girder bridges. Reasonable arrangement of integrated isolation bearings can promote irregular continuous girder bridge's seismic behavior significantly.
The piers of irregular continuous girder bridge have large height difference each other and complex earthquake response. The earthquake force distribution of traditional single fixed pier aseismatic bearing is irrational.Based on a three-span and two-connection continuous girder bridge. This paper proposes a discussion on the problem of horizontal earthquake force distribution in high and low piers in continuous girder bridges. Comparing with earthquake force distribution in traditional single fixed pier,nonlinear time-history method was used in this paper to analysis the distribution law of earthquake force in piers which have combination of high damping rubber bearings and teflon slide type bearings and combination of laminated rubber bearings and teflon slide type bearings. The analysis results show that the combination of high damping rubber bearings and teflon slide type bearings can make earthquake force distributed rationally among piers in irregular continuous girder bridges. Reasonable arrangement of integrated isolation bearings can promote irregular continuous girder bridge's seismic behavior significantly.
引文
[1]魏标.典型非规则梁桥抗震设计理论[D].上海:同济大学,2010.Wei B.seismic design theory of typical irregular continuous bridges[D].Shanghai:Tongji University,2010.
[2]龚一琼,胡勃,袁万城,等.连续梁桥的减隔震设计[J].同济大学学报(自然科学版),2001,1:020.Gong Y Q,Hu B,Yuan W C.Seismic Isolation Design of Continuous Girder Bridges[J].Journal of Tongji University.(Natural science),2001,1:020.
[3]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81-85.Wu L,Li J Z,Fan L C.Research on seismic isolation design for long-span continuous bridges[J].China Civil Engineering Journal,2006,39(3):81-85.
[4]汤虎,李建中.连续梁桥固定墩减震设计方法研究[J].土木工程学报,2011,44(12):64-72.Tang H,Li J Z.Study of earthquake-reduction design for the fixed pier of continuous bridges[J].China Civil Engineering Journal,2011,44(12):64-72.
[5]Priestley M. J.N.,Seible FCalvi G M. Seismic design and retrofit of bridg-es[M].New York: John Wiley and Sons,1997.
[6]Dicleli M.Seismic design of lifeline bridge using hybrid seismic isolation[J].Journal of Bridge Engineering,2002,7(2):94-103.
[7]Peng T,Li J,Xu Y,et al.Study on the seismic performance of a double spherical seismic isolation bearing[J].Earthquake Engineering and Engineering Vibration,2008,7(4):439-446.
[8]Mitoulis S A,Tegos I A,Stylianidis K C.Cost-effectiveness related to the earthquake resisting system of multi-span bridges[J].Engineering Structures,2010,32(9):2658-2671
[9]庄学真,沈朝勇,金建敏.桥梁高阻尼橡胶支座力学性能试验研究[J].地震工程与工程振动,2006,26(5):208-212.Zhuang X Z,Shen C Y,Jin J M.Experimental study on mechanical property of high damping rubber bearing for bridge[J].Earthquake Engineering and Engineering Vibration,2006,26(5):208-212.
[10]中交公路规划设计院有限公司.JT/T 391—2009公路桥梁盆式橡胶支座[S].北京:人民交通出版社,2009.China Communication Highway Planning and Design Institute.JT/T 391—2009 Pot bearings for highway bridges[S].Beijing:People's Communication Press,2009.
[11]李建中,辛学忠.连续梁桥减震,隔震体系非线性地震反应分析[J].地震工程与工程振动,1998,18(3):67-73.Li J Z,Xin X Z.Nonlinear Seismic Response Analyses of Isolation Systems for Continuous Bridges[J].Earthquake Engineering and Engineering Vibration,1998,18(3):67-73.
[12]中交公路规划设计院有限公司.JT/T 663—2006公路桥梁板式橡胶支座规格系列[S].北京:人民交通出版社,2007.China Communication Highway Planning and Design Institute.JT/T 663—2006 Series of elastomeric pad bearings for highway bridges[S].Beijing:People's Communication Press,2007.
[13]重庆交通科研设计院.JTG/T B02—01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008.Chongqing Communications Research and Design Institute.JTG/T B02—01—2008 Guidelines for Seismic Design of Highway Bridges[S].Beijing:People's Communication Press,2008.
[14]中交第一公路勘察设计研究院有限公司.JT/T 842—2012公路桥梁高阻尼隔震橡胶支座[S].北京:人民交通出版社,2012.China Transportation,First Highway Survey,Design and Research Institute.JT/T 842—2012 High damping seismic isolation rubber bearings for highway bridges[S].Beijing:People's Communication Press,2012.
[2]龚一琼,胡勃,袁万城,等.连续梁桥的减隔震设计[J].同济大学学报(自然科学版),2001,1:020.Gong Y Q,Hu B,Yuan W C.Seismic Isolation Design of Continuous Girder Bridges[J].Journal of Tongji University.(Natural science),2001,1:020.
[3]郭磊,李建中,范立础.大跨度连续梁桥减隔震设计研究[J].土木工程学报,2006,39(3):81-85.Wu L,Li J Z,Fan L C.Research on seismic isolation design for long-span continuous bridges[J].China Civil Engineering Journal,2006,39(3):81-85.
[4]汤虎,李建中.连续梁桥固定墩减震设计方法研究[J].土木工程学报,2011,44(12):64-72.Tang H,Li J Z.Study of earthquake-reduction design for the fixed pier of continuous bridges[J].China Civil Engineering Journal,2011,44(12):64-72.
[5]Priestley M. J.N.,Seible FCalvi G M. Seismic design and retrofit of bridg-es[M].New York: John Wiley and Sons,1997.
[6]Dicleli M.Seismic design of lifeline bridge using hybrid seismic isolation[J].Journal of Bridge Engineering,2002,7(2):94-103.
[7]Peng T,Li J,Xu Y,et al.Study on the seismic performance of a double spherical seismic isolation bearing[J].Earthquake Engineering and Engineering Vibration,2008,7(4):439-446.
[8]Mitoulis S A,Tegos I A,Stylianidis K C.Cost-effectiveness related to the earthquake resisting system of multi-span bridges[J].Engineering Structures,2010,32(9):2658-2671
[9]庄学真,沈朝勇,金建敏.桥梁高阻尼橡胶支座力学性能试验研究[J].地震工程与工程振动,2006,26(5):208-212.Zhuang X Z,Shen C Y,Jin J M.Experimental study on mechanical property of high damping rubber bearing for bridge[J].Earthquake Engineering and Engineering Vibration,2006,26(5):208-212.
[10]中交公路规划设计院有限公司.JT/T 391—2009公路桥梁盆式橡胶支座[S].北京:人民交通出版社,2009.China Communication Highway Planning and Design Institute.JT/T 391—2009 Pot bearings for highway bridges[S].Beijing:People's Communication Press,2009.
[11]李建中,辛学忠.连续梁桥减震,隔震体系非线性地震反应分析[J].地震工程与工程振动,1998,18(3):67-73.Li J Z,Xin X Z.Nonlinear Seismic Response Analyses of Isolation Systems for Continuous Bridges[J].Earthquake Engineering and Engineering Vibration,1998,18(3):67-73.
[12]中交公路规划设计院有限公司.JT/T 663—2006公路桥梁板式橡胶支座规格系列[S].北京:人民交通出版社,2007.China Communication Highway Planning and Design Institute.JT/T 663—2006 Series of elastomeric pad bearings for highway bridges[S].Beijing:People's Communication Press,2007.
[13]重庆交通科研设计院.JTG/T B02—01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008.Chongqing Communications Research and Design Institute.JTG/T B02—01—2008 Guidelines for Seismic Design of Highway Bridges[S].Beijing:People's Communication Press,2008.
[14]中交第一公路勘察设计研究院有限公司.JT/T 842—2012公路桥梁高阻尼隔震橡胶支座[S].北京:人民交通出版社,2012.China Transportation,First Highway Survey,Design and Research Institute.JT/T 842—2012 High damping seismic isolation rubber bearings for highway bridges[S].Beijing:People's Communication Press,2012.
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