向莆铁路闽江特大桥主桥设计
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摘要
研究目的:根据向莆铁路闽江特大桥桥址处自然环境条件,跨越闽江主桥采用(60+7×100+60)m预应力混凝土连续梁桥式,梁部采用单箱单室直腹板变截面箱型梁,设置三向预应力体系。主桥桥墩采用圆端形实体墩,钻孔桩基础。通过对主桥结构进行平面静力分析、抗震设计、车桥耦合动力响应分析、桥上制动力计算分析,为该桥的设计提供依据,研究结果可供其他同类型桥梁参考。研究结论:梁体顶、底板正应力和腹板剪应力均能满足规范要求;38#、40#桥墩设置粘滞性阻尼器后,该桥结构满足抗震要求;主桥结构具有良好的动力性及列车走行性,列车通过桥梁时的安全性和乘坐舒适性均能满足要求。
Research purposes: In the light of the natural environment conditionts of the bridge site,the prestressed concrete continuous girder bridge with span arrangement of(60+7×100+60) m was adopted for the main bridge of Minjiang River Bridge of the Xiangtang-Puian Railway.A variable cross section box girder with single box,single chamber and vertical webs was adopted for the main girder of the main bridge with three-way prestresssing system.The piers of the main bridge were designed as the round-end solid piers,resting on the bored pile foundations.The softwares were used to analyze the plane static force,the seismic design of the main bridge structure,the train-bridge dynamic responses and the calculation of the braking force on deck of the bridge for providing the basis for the bridge design.The research results can be as the reference to the similar bridges. Research conclusions:The normal stress in top and bottom slabs of the girders and the shear force in weds could meet the relevant requirements in the codes.After adding the viscous dampers on the No.38 and No.40 piers,the structure could meet the seismic requirements.The main bridge structure had good dynamics with good traveling capacity for the train and it could meet the demands of the train running safety and passenger comfortableness.
Research purposes: In the light of the natural environment conditionts of the bridge site,the prestressed concrete continuous girder bridge with span arrangement of(60+7×100+60) m was adopted for the main bridge of Minjiang River Bridge of the Xiangtang-Puian Railway.A variable cross section box girder with single box,single chamber and vertical webs was adopted for the main girder of the main bridge with three-way prestresssing system.The piers of the main bridge were designed as the round-end solid piers,resting on the bored pile foundations.The softwares were used to analyze the plane static force,the seismic design of the main bridge structure,the train-bridge dynamic responses and the calculation of the braking force on deck of the bridge for providing the basis for the bridge design.The research results can be as the reference to the similar bridges. Research conclusions:The normal stress in top and bottom slabs of the girders and the shear force in weds could meet the relevant requirements in the codes.After adding the viscous dampers on the No.38 and No.40 piers,the structure could meet the seismic requirements.The main bridge structure had good dynamics with good traveling capacity for the train and it could meet the demands of the train running safety and passenger comfortableness.
引文
[1]中铁第四勘察设计院集团有限公司.向莆铁路闽江特大桥施工图[Z].武汉:中铁第四勘察设计院集团有限公司,2009.China Railway Siyuan Survey and Design Group Co.Ltd.Construction Drawings of Project of MinjiangRiver Bridge on Xiangpu Railway[Z].Wuhan:ChinaRailway Siyuan Survey and Design Group Co.Ltd,2009.
[2]南京水利科学研究院.向莆铁路闽江特大桥通航净空尺度和技术要求论证研究报告[R].南京:南京水利科学研究院,2007.Nanjing Hydraulic Research Institute.Report of Studyon Bridge Navigation Clearance Dimension andTechnical Specification of Minjiang River Bridge onXiangpu Railway[R].Nanjing:Nanjing HydraulicResearch Institute,2007.
[3]TB 10002.3—2005,铁路桥涵钢筋混凝土和预应力混凝土结构设计规范[S].TB 10002.3—2005,Code for Design on Reinforced andPrestressed Concrete Structure of Railway Bridge andCulvert[S].
[4]铁建设函[2005]285号,新建时速200公里客货共线铁路设计暂行规定[S].Railway Construction Letter[2005]No.285,InterimDesign Provisions for a New 200 km/h Mixed Passengerand Freight Railway[S].
[5]铁道部大桥局.钱塘江二桥技术总结[M].武汉:武汉测绘科技大学出版社,1995.Major Bridge Engineering Bureau,the Ministry ofRailways.Technical Sumnary of the SecondQiantangjiang River Bridge[M].Wuhan:Press ofWuhan University of Geodesy and Geomatics Scienceand Technology,1995.
[6]吴延伟.大跨度连续刚构桥罕遇地震下抗震分析[J].铁道工程学报,2010(2):54-59.Wu Yanwei.Seismic Analysis of Large Span ContinuousRigid Frame Bridge Under Rarely Strong Earthquake[J].Journal of Railway Engineering Society,2010(2):54-59.
[7]中铁第四勘察设计院集团有限公司.向莆铁路闽江特大桥抗震分析[R].武汉:中铁第四勘察设计院集团有限公司,2009.China Railway Siyuan Survey and Design Group Co.Ltd.Analysis Report of Seismic Research of MinjiangRiver Bridge on Xiangpu Railway[R].Wuhan:ChinaRailway Siyuan Survey and Design Group Co.Ltd,2009.
[8]曾庆元,郭向荣.列车桥梁时变系统振动分析理论与应用[M].北京:中国铁道出版社,1999.Zeng Qingyuan,Guo Xiangrong.Theory andApplication of Vibration Analysis on Train-bridgeTime-varying System[M].Beijing:China RailwayPublishing House,1999.
[9]方淑君,李德建,曾庆元.三线铁路预应力连续梁桥列车-桥梁时变系统空间振动分析[J].中南大学学报(自然科学版),2008(2):394-399.Fang Shujun,Li Dejian,Zeng Qingyuan.StochasticSpace Vibration Analysis of Train-bridge Time-varying System a Three-track Railroad PrestressedConcrete Continuous Bridge[J].Journal of CentralSouth University(Science and Technology),2008(2):394-399.
[10]曾庆元,杨平.形成矩阵的“对号入座”法则与桁梁空间分析的桁段有限元法[J].铁道学报,1986(2):48-59.Zeng Qingyuan,Yang Ping.The“Set-in-Right-Position”Rule for Forming Structural Matrices and theFinite Truss-Element Method for Space Analysis ofTruss Bridges[J].Journal of the China RailwaySociety,1986(2):48-59.
[11]中南大学.向莆铁路四座特殊桥梁的动力特性及列车走行性分析[R].长沙:中南大学,2010.Central South University.Analysis Report of Dynamicand Train Traveling Capacity of the Four EspecialStructure Bridges on Xiangpu Railway[R].Changsha:Central South University,2010.
[2]南京水利科学研究院.向莆铁路闽江特大桥通航净空尺度和技术要求论证研究报告[R].南京:南京水利科学研究院,2007.Nanjing Hydraulic Research Institute.Report of Studyon Bridge Navigation Clearance Dimension andTechnical Specification of Minjiang River Bridge onXiangpu Railway[R].Nanjing:Nanjing HydraulicResearch Institute,2007.
[3]TB 10002.3—2005,铁路桥涵钢筋混凝土和预应力混凝土结构设计规范[S].TB 10002.3—2005,Code for Design on Reinforced andPrestressed Concrete Structure of Railway Bridge andCulvert[S].
[4]铁建设函[2005]285号,新建时速200公里客货共线铁路设计暂行规定[S].Railway Construction Letter[2005]No.285,InterimDesign Provisions for a New 200 km/h Mixed Passengerand Freight Railway[S].
[5]铁道部大桥局.钱塘江二桥技术总结[M].武汉:武汉测绘科技大学出版社,1995.Major Bridge Engineering Bureau,the Ministry ofRailways.Technical Sumnary of the SecondQiantangjiang River Bridge[M].Wuhan:Press ofWuhan University of Geodesy and Geomatics Scienceand Technology,1995.
[6]吴延伟.大跨度连续刚构桥罕遇地震下抗震分析[J].铁道工程学报,2010(2):54-59.Wu Yanwei.Seismic Analysis of Large Span ContinuousRigid Frame Bridge Under Rarely Strong Earthquake[J].Journal of Railway Engineering Society,2010(2):54-59.
[7]中铁第四勘察设计院集团有限公司.向莆铁路闽江特大桥抗震分析[R].武汉:中铁第四勘察设计院集团有限公司,2009.China Railway Siyuan Survey and Design Group Co.Ltd.Analysis Report of Seismic Research of MinjiangRiver Bridge on Xiangpu Railway[R].Wuhan:ChinaRailway Siyuan Survey and Design Group Co.Ltd,2009.
[8]曾庆元,郭向荣.列车桥梁时变系统振动分析理论与应用[M].北京:中国铁道出版社,1999.Zeng Qingyuan,Guo Xiangrong.Theory andApplication of Vibration Analysis on Train-bridgeTime-varying System[M].Beijing:China RailwayPublishing House,1999.
[9]方淑君,李德建,曾庆元.三线铁路预应力连续梁桥列车-桥梁时变系统空间振动分析[J].中南大学学报(自然科学版),2008(2):394-399.Fang Shujun,Li Dejian,Zeng Qingyuan.StochasticSpace Vibration Analysis of Train-bridge Time-varying System a Three-track Railroad PrestressedConcrete Continuous Bridge[J].Journal of CentralSouth University(Science and Technology),2008(2):394-399.
[10]曾庆元,杨平.形成矩阵的“对号入座”法则与桁梁空间分析的桁段有限元法[J].铁道学报,1986(2):48-59.Zeng Qingyuan,Yang Ping.The“Set-in-Right-Position”Rule for Forming Structural Matrices and theFinite Truss-Element Method for Space Analysis ofTruss Bridges[J].Journal of the China RailwaySociety,1986(2):48-59.
[11]中南大学.向莆铁路四座特殊桥梁的动力特性及列车走行性分析[R].长沙:中南大学,2010.Central South University.Analysis Report of Dynamicand Train Traveling Capacity of the Four EspecialStructure Bridges on Xiangpu Railway[R].Changsha:Central South University,2010.
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