曹妃甸工业区1号桥斜拉桥设计
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摘要
曹妃甸工业区1号桥位于北方寒冷强震区,由通航孔桥、非通航孔桥及引桥组成,综述该桥通航孔桥设计。根据建设条件及景观要求,通航孔桥为跨径2×138 m独塔单索面斜拉桥;桥塔为独柱形,造型为船帆式;索塔锚固区采用外露式钢锚箱方案;主梁采用单箱三室钢-混凝土箱形结合梁;斜拉索采用7 mm镀锌平行钢丝;桥塔墩采用群桩基础。抗震性能研究表明,强震区大型独塔斜拉桥应尽量避免采用塔、梁、墩固结体系,以减小桥梁结构的地震响应。
The Caofeidian Industry Zone Bridge No.1 is composed of navigable span bridge,non-navigable span bridges and approach bridges and is located in the cold and strong earthquake region in the northern part of China.A summarized account of the design of the navigable span bridge of the bridge is presented herewith.In accordance with the construction conditions and landscape requirements,the navigable span bridge is designed as a single pylon and single cable plane cable-stayed bridge with span arrangement 2×138 m,the pylon is the column pylon in shape of boat sail.The anchorage zone in the pylon is the steel anchor box exposed outside the pylon.The main girder is the steel and concrete composite girder having three cells and a single box.The stay cables are made up of 7 mm galvanized parallel steel wires and the foundation of the pylon pier is the group pile foundation.The research of seismic resistance of the bridge show that for a major single pylon cable-stayed bridge located in the strong earthquake region,the rigid fixity system of pylon,girder and pier should be possibly avoided in order to reduce seismic response of the bridge structure.
The Caofeidian Industry Zone Bridge No.1 is composed of navigable span bridge,non-navigable span bridges and approach bridges and is located in the cold and strong earthquake region in the northern part of China.A summarized account of the design of the navigable span bridge of the bridge is presented herewith.In accordance with the construction conditions and landscape requirements,the navigable span bridge is designed as a single pylon and single cable plane cable-stayed bridge with span arrangement 2×138 m,the pylon is the column pylon in shape of boat sail.The anchorage zone in the pylon is the steel anchor box exposed outside the pylon.The main girder is the steel and concrete composite girder having three cells and a single box.The stay cables are made up of 7 mm galvanized parallel steel wires and the foundation of the pylon pier is the group pile foundation.The research of seismic resistance of the bridge show that for a major single pylon cable-stayed bridge located in the strong earthquake region,the rigid fixity system of pylon,girder and pier should be possibly avoided in order to reduce seismic response of the bridge structure.
引文
[1]杨雪梅.大跨度张弦梁的结构特点和设计分析[J].建筑与结构设计,2010,(7):22-24.(YANG Xue-mei.Long-Span Beam-String Structure Featuresand Design Analysis[J].Architectural and Structural Design,2010,(7):22-24.in Chinese)
[2]葛耀君,杨詠昕,赵林,等.上海长江大桥主通航桥抗风稳定性能研究[J].世界桥梁,2009,(S1):68-72.(GE Yao-jun,YANG Yong-xin,ZHAO Lin,et al.Study ofWind Resistant Stability of Main Navigable Span Bridge ofShanghai Changjiang River Bridge[J].World Bridges,2009,(S1):68-72.in Chinese)
[3]苏庆田,曾明根.斜拉桥混凝土索塔钢锚箱受力计算[J].结构工程师,2005,21(6):28-32,27.(SU Qing-tian,ZENG Ming-gen.Analysis of Mechanical Be-havior of Steel-Anchor-Box on Concrete Pylon in Cable-StayedBridge[J].Structural Engineers,2005,21(6):28-32,27.in Chinese)
[4]范立础.世界最大跨径的斜拉桥-法国诺曼弟(Normandy)大桥的设计及施工[J].重庆交通学院学报,1995,(3):1-8.(FAN Li-chu.The Design and Construction of the World Lon-gest Span Cable-Stayed Bridge-Normandy Bridge in France[J].Journal of Chongqing Jiaotong Institute,1995,(3):1-8.in Chinese)
[5]曾明根,苏庆田,吴冲.连接形式对斜拉桥组合索塔钢锚箱剪力钉受力的影响[J].桥梁建设,2008,(1):47-49,57.(ZENG Ming-gen,SU Qing-tian,WU Chong.Effect of Con-nections on Shear Stud Mechanical Behavior of Steel AnchorBox in Composite Pylon of Cable-Stayed Bridge[J].BridgeConstruction,2008,(1):47-49,57.in Chinese)
[6]邵长宇,颜爱华,邓青儿.东海大桥主跨420 m钢-混凝土箱形组合梁斜拉桥新技术[J].桥梁建设,2004,(2):27-30.(SHAO Chang-yu,YAN Ai-hua,DENG Qing-er.New Tech-niques of Steel-Concrete Composite Box Girder of 420-m Cable-Stayed Main Span of East China Sea Bridge[J].Bridge Con-struction,2004,(2):27-30.in Chinese)
[7]同济大学土木工程防灾国家重点实验室.唐山曹妃甸工业区1号桥结构抗震性能分析研究[Z].2008.(State Key Laboratory of Disaster Reduction in Civil Engineer-ing,Tongji University.Analysis and Study Structural Seis-micity Resistance Performance of Caofeidian Industry ZoneBridge No.1 in Tangshan[Z].2008.in Chinese)
[8]黄小国,李建中,郭磊.地震作用下独塔斜拉桥合理约束体系[J].结构工程师,2008,24(6):29-35.(HUANG Xiao-guo,LI Jian-zhong,GUO-Lei.AppropriateConstraint Systems for Single-Tower Cable-Stayed Bridges un-der Earthquake[J].Structural Engineers,2008,24(6):29-35.in Chinese)
[9]朱元勋.独塔斜拉桥体系纵桥向抗震优化分析[J].华东公路,2009,(6):3-6.(ZHU Yuan-xun.Optimization and Analysis of LongitudinalSeismic Resistance of Single Pylon Cable-Stayed Bridge System[J].East China Highway,2009,(6):3-6.in Chinese)
[2]葛耀君,杨詠昕,赵林,等.上海长江大桥主通航桥抗风稳定性能研究[J].世界桥梁,2009,(S1):68-72.(GE Yao-jun,YANG Yong-xin,ZHAO Lin,et al.Study ofWind Resistant Stability of Main Navigable Span Bridge ofShanghai Changjiang River Bridge[J].World Bridges,2009,(S1):68-72.in Chinese)
[3]苏庆田,曾明根.斜拉桥混凝土索塔钢锚箱受力计算[J].结构工程师,2005,21(6):28-32,27.(SU Qing-tian,ZENG Ming-gen.Analysis of Mechanical Be-havior of Steel-Anchor-Box on Concrete Pylon in Cable-StayedBridge[J].Structural Engineers,2005,21(6):28-32,27.in Chinese)
[4]范立础.世界最大跨径的斜拉桥-法国诺曼弟(Normandy)大桥的设计及施工[J].重庆交通学院学报,1995,(3):1-8.(FAN Li-chu.The Design and Construction of the World Lon-gest Span Cable-Stayed Bridge-Normandy Bridge in France[J].Journal of Chongqing Jiaotong Institute,1995,(3):1-8.in Chinese)
[5]曾明根,苏庆田,吴冲.连接形式对斜拉桥组合索塔钢锚箱剪力钉受力的影响[J].桥梁建设,2008,(1):47-49,57.(ZENG Ming-gen,SU Qing-tian,WU Chong.Effect of Con-nections on Shear Stud Mechanical Behavior of Steel AnchorBox in Composite Pylon of Cable-Stayed Bridge[J].BridgeConstruction,2008,(1):47-49,57.in Chinese)
[6]邵长宇,颜爱华,邓青儿.东海大桥主跨420 m钢-混凝土箱形组合梁斜拉桥新技术[J].桥梁建设,2004,(2):27-30.(SHAO Chang-yu,YAN Ai-hua,DENG Qing-er.New Tech-niques of Steel-Concrete Composite Box Girder of 420-m Cable-Stayed Main Span of East China Sea Bridge[J].Bridge Con-struction,2004,(2):27-30.in Chinese)
[7]同济大学土木工程防灾国家重点实验室.唐山曹妃甸工业区1号桥结构抗震性能分析研究[Z].2008.(State Key Laboratory of Disaster Reduction in Civil Engineer-ing,Tongji University.Analysis and Study Structural Seis-micity Resistance Performance of Caofeidian Industry ZoneBridge No.1 in Tangshan[Z].2008.in Chinese)
[8]黄小国,李建中,郭磊.地震作用下独塔斜拉桥合理约束体系[J].结构工程师,2008,24(6):29-35.(HUANG Xiao-guo,LI Jian-zhong,GUO-Lei.AppropriateConstraint Systems for Single-Tower Cable-Stayed Bridges un-der Earthquake[J].Structural Engineers,2008,24(6):29-35.in Chinese)
[9]朱元勋.独塔斜拉桥体系纵桥向抗震优化分析[J].华东公路,2009,(6):3-6.(ZHU Yuan-xun.Optimization and Analysis of LongitudinalSeismic Resistance of Single Pylon Cable-Stayed Bridge System[J].East China Highway,2009,(6):3-6.in Chinese)
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