河南甄坟沟大桥支座更换布置方案研究
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摘要
以支座损坏后进行全部更换的河南甄坟沟大桥为研究对象,利用有限元软件MIDAS/civil,对具有较大纵坡和较高桥墩的四跨先简支后连续分体式组合小箱梁桥的静动力特性进行计算。分析比选了两种支座更换布置方案:对称的2号墩固定支座方案和非对称的3号墩固定支座方案。根据该桥梁静力计算、自振特性计算和在设计地震作用下的反应谱分析计算,得出3号墩固定支座方案为支座更换合理布置方案的结论。
The Zhenfengou Bridge in He'nan,which is bearing replacements after damaging,was taken as the object to study in this paper.The finite element software MIDAS/civil was applied to set up the spatial model,in which the characteristics of the great longitudinal slop and the high piers were considered,so the static and dynamic properties of this simply supported to continuous four spans separated box girder bridge were calculated.Two bearing replacement programs were compared after analysis,including the symmetric fixed support program on the 2nd pier and the non-symmetric fixed support program on the 3rd pier.According to static calculation results,the structural dynamical characteristics and the response spectrum analysis results support to the design earthquake,it is obtained that the reasonable bearing replacement program is the 3rd pier fixed support program.
The Zhenfengou Bridge in He'nan,which is bearing replacements after damaging,was taken as the object to study in this paper.The finite element software MIDAS/civil was applied to set up the spatial model,in which the characteristics of the great longitudinal slop and the high piers were considered,so the static and dynamic properties of this simply supported to continuous four spans separated box girder bridge were calculated.Two bearing replacement programs were compared after analysis,including the symmetric fixed support program on the 2nd pier and the non-symmetric fixed support program on the 3rd pier.According to static calculation results,the structural dynamical characteristics and the response spectrum analysis results support to the design earthquake,it is obtained that the reasonable bearing replacement program is the 3rd pier fixed support program.
引文
[1]范立础.桥梁工程[M].北京:人民交通出版社,2001.Fan Lichu.Bridge engineering[M].Beijing:China CommunicationsPress,2001.(in Chinese)
[2]范立础.桥梁抗震[M].上海:同济大学出版社,1997.Fan Lichu.Earthquake resistance of bridge[M].Shanghai:TongjiUniversity Press,1997.(in Chinese)
[3]周明华,葛宝翔.公路桥梁橡胶支座的使用寿命与应用对策[J].土木工程学报,2005,38(6):92-96.Zhou Minghua,Ge Baoxiang.On the service lifetime of rubberbearing and countermeasures of application for highway bridges[J].China Civil Engineering Journal,2005,38(6):92-96.(in Chinese)
[4]蒋建军,蒋劲松.西部地震区高墩桥梁支座合理选型研究[J].公路,2007,(11):27-31.Jiang Jianjun,Jiang Jinsong.A study on appropriate types of bearingsinstalled on high pier bridges in seismic regions in west of China[J].Highway,2007,(11):27-31.(in Chinese)
[5]北京迈达斯技术有限公司.土木结构分析[R].北京,2005.Midas IT(Beijing)Co.,Ltd..Analysis for civil structure[R].Beijing,2005.(in Chinese)
[6]谢旭.桥梁结构地震响应分析与抗震设计[M].北京:人民交通出版社,2006.Xie Xu.Seismic response and earthquake resistant design of bridges[M].Beijing:China Communications Press,2006.(in Chinese)
[7]何波,朱宏平,史雅楠.大跨径连续刚构桥抗震性能评价[J].公路,2007,(11):1-6.He Bo,Zhu Hongping,Shi Ya’nan.Evaluation on antiseismicperformance of long span continuous rigid frame bridge[J].Highway,2007,(11):1-6.(in Chinese)
[8]陈淮,王艳,葛素娟.白河特大桥主桥抗震性能分析[J].公路交通科技,2008,25(3):103-108.Chen Huai,Wang Yan,Ge Sujuan.Aseismic performance analysis ofmain bridge of Bai River Grand Bridge[J].Journal of Highway andTransportation Research and Development,2008,25(3):103-108.(in Chinese)
[2]范立础.桥梁抗震[M].上海:同济大学出版社,1997.Fan Lichu.Earthquake resistance of bridge[M].Shanghai:TongjiUniversity Press,1997.(in Chinese)
[3]周明华,葛宝翔.公路桥梁橡胶支座的使用寿命与应用对策[J].土木工程学报,2005,38(6):92-96.Zhou Minghua,Ge Baoxiang.On the service lifetime of rubberbearing and countermeasures of application for highway bridges[J].China Civil Engineering Journal,2005,38(6):92-96.(in Chinese)
[4]蒋建军,蒋劲松.西部地震区高墩桥梁支座合理选型研究[J].公路,2007,(11):27-31.Jiang Jianjun,Jiang Jinsong.A study on appropriate types of bearingsinstalled on high pier bridges in seismic regions in west of China[J].Highway,2007,(11):27-31.(in Chinese)
[5]北京迈达斯技术有限公司.土木结构分析[R].北京,2005.Midas IT(Beijing)Co.,Ltd..Analysis for civil structure[R].Beijing,2005.(in Chinese)
[6]谢旭.桥梁结构地震响应分析与抗震设计[M].北京:人民交通出版社,2006.Xie Xu.Seismic response and earthquake resistant design of bridges[M].Beijing:China Communications Press,2006.(in Chinese)
[7]何波,朱宏平,史雅楠.大跨径连续刚构桥抗震性能评价[J].公路,2007,(11):1-6.He Bo,Zhu Hongping,Shi Ya’nan.Evaluation on antiseismicperformance of long span continuous rigid frame bridge[J].Highway,2007,(11):1-6.(in Chinese)
[8]陈淮,王艳,葛素娟.白河特大桥主桥抗震性能分析[J].公路交通科技,2008,25(3):103-108.Chen Huai,Wang Yan,Ge Sujuan.Aseismic performance analysis ofmain bridge of Bai River Grand Bridge[J].Journal of Highway andTransportation Research and Development,2008,25(3):103-108.(in Chinese)
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