椒江特大桥主桥设计研究
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摘要
椒江特大桥是杭州经绍兴至台州客运专线的控制工程,主桥采用(84+156+480+156+84)m钢桁斜拉桥,具备四线、宽桁、大跨、高速等特征。为保证该桥设计方案合理可行、经济美观,本文就该桥的桥梁结构型式、主梁结构类型、桥面系构造等进行综合比选。研究结果表明:(1)主跨采用480 m 1跨跨越习惯航迹线,满足通航、防洪要求和受力景观需要,减小船撞风险;(2)桥面布置采用四线双桁同层布置,优化线间距,节省引桥投资,减少建设规模;(3)桥面采用密横梁正交异性复合钢板桥面系,有效降低二恒大小,减小主桁宽度。
Jiaojiang bridge is the key project of Hangzhou-Shaotai-Taizhou passenger dedicated line,(84+156+480+156+84)m steel truss cable-stayed bridge is used for the main bridge.This bridge contains characters such as four tracks, wide truss, long span and high speed. In order to ensure the project to be feasible, practical and economical, this paper conducts series of comparison and selection on structural style of the bridge, designs of the main girder and structure of the deck. Research conclusions show:(1)The main span using 480 m span crossing the customary track line meets the requirements of navigation, flood control and the stressed landscape needs, and the risk of boat collision is reduced;(2)The layout of bridge deck is four line double truss and same layer arrangement, the line space is optimized, the approach bridge investment is saved, the scale of construction is reduced;(3)The dense cross beam orthotropic composite steel deck is adopted for bridge deck, the secondary dead load is effectively reduced, and the width of main truss is reduced.
Jiaojiang bridge is the key project of Hangzhou-Shaotai-Taizhou passenger dedicated line,(84+156+480+156+84)m steel truss cable-stayed bridge is used for the main bridge.This bridge contains characters such as four tracks, wide truss, long span and high speed. In order to ensure the project to be feasible, practical and economical, this paper conducts series of comparison and selection on structural style of the bridge, designs of the main girder and structure of the deck. Research conclusions show:(1)The main span using 480 m span crossing the customary track line meets the requirements of navigation, flood control and the stressed landscape needs, and the risk of boat collision is reduced;(2)The layout of bridge deck is four line double truss and same layer arrangement, the line space is optimized, the approach bridge investment is saved, the scale of construction is reduced;(3)The dense cross beam orthotropic composite steel deck is adopted for bridge deck, the secondary dead load is effectively reduced, and the width of main truss is reduced.
引文
[1] 中铁第五勘察设计院集团有限公司.杭州经绍兴至台州线初步设计鉴修[R].北京:中铁第五勘察设计院集团有限公司,2016.China Railway Fifth Survey and Design Insitute Group Co.,Ltd.Preliminary Design of Hangzhou-Shaoxing-Taizhou Railway Construction[R].Beijing:China Railway Fifth Survey and Design Insitute Group Co.,Ltd.,2016.
[2] 李永乐,苏茂材,王士刚,等.大跨度钢桁梁铁路斜拉桥刚度参数敏感性分析[J].振动与冲击,2015,34(2):166-169.LI Yongle,SU Maocai,WANG Shigang,et al.Sensitivity of Structural Stiffness Parameters of Sensitivity Analysis of Stiffness Parameters of Long-span Steel Truss Cable-stayed Railway Bridge[J].Journal of Vibration and Shock,2015,34(2):166-169.
[3] 朱志虎.钢桁加劲梁铁路斜拉桥竖向刚度分析研究[J].世界桥梁,2003,31(1):52-54.ZHU Zhihu.Vertical Stiffness Analysis of Steel Truss Girder Railway Cable-stayed Bridge [J].World Bridges,2003,31(1):52-54.
[4] 艾宗良,马庭林,戴胜勇.东新赣江特大桥主桥设计研究[J].铁道工程学报,2016,33(4):60-64.AI Zongliang,MA Tinglin,DAI Shengyong.Research on the Design of the Main Bridge of Dongxin Ganjiang Bridge[J].Journal Railway Engineering Society,2016,33(4):60-64.
[5] 瞿国钊.思贤窖大桥四线铁路宽桁斜拉桥关键技术研究[J].铁道工程学报.2011,28(6):34-38.QU Guozhao.Research on Key Technologies for Sixianjiao Four Tracks Railway Widetrussed Cable-stayed Bridge[J].Journal of Railway Engineering Society,2011,28(6):34-38.
[6] 王志英,徐召,王洺鑫,等.济南长清黄河公路大桥主桥设计方案比选[J].桥梁建设,2016,46(4):97-100.WANG Zhiying,XU Zhao,WANG Mingxin,et al.Comparison and Selection of Design Schemes for Main Bridge of Changqing Huanghe River Highway Bridge in Jinan[J].Bridge Construction,2016,46(4):97-100.
[7] 戴胜勇,艾宗良,杨善奎.客运专线4线双桁钢桁连续梁桥面系设计研究[J].铁道标准设计,2009,53(8):38-40.DAI Shengyong,AI Zongliang,YANG Shankui.Design and Research on Deck System of Four Line Double Truss Steel Truss Continuous Girder Bridge for Passenger Dedicated Line [J].Railway Standard Design,2009,53(8):38-40.
[8] 龚中平,戴利民,郑本辉.椒江二桥主桥方案设计[J].公路,2010,55(3):56-59.GONG Zhongping,DAI Limin,ZHENG Benhui.Conceptual Design of Main Bridge of Second Jiaojiang Bridge[J].Highway,2010,55(3):56-59.
[2] 李永乐,苏茂材,王士刚,等.大跨度钢桁梁铁路斜拉桥刚度参数敏感性分析[J].振动与冲击,2015,34(2):166-169.LI Yongle,SU Maocai,WANG Shigang,et al.Sensitivity of Structural Stiffness Parameters of Sensitivity Analysis of Stiffness Parameters of Long-span Steel Truss Cable-stayed Railway Bridge[J].Journal of Vibration and Shock,2015,34(2):166-169.
[3] 朱志虎.钢桁加劲梁铁路斜拉桥竖向刚度分析研究[J].世界桥梁,2003,31(1):52-54.ZHU Zhihu.Vertical Stiffness Analysis of Steel Truss Girder Railway Cable-stayed Bridge [J].World Bridges,2003,31(1):52-54.
[4] 艾宗良,马庭林,戴胜勇.东新赣江特大桥主桥设计研究[J].铁道工程学报,2016,33(4):60-64.AI Zongliang,MA Tinglin,DAI Shengyong.Research on the Design of the Main Bridge of Dongxin Ganjiang Bridge[J].Journal Railway Engineering Society,2016,33(4):60-64.
[5] 瞿国钊.思贤窖大桥四线铁路宽桁斜拉桥关键技术研究[J].铁道工程学报.2011,28(6):34-38.QU Guozhao.Research on Key Technologies for Sixianjiao Four Tracks Railway Widetrussed Cable-stayed Bridge[J].Journal of Railway Engineering Society,2011,28(6):34-38.
[6] 王志英,徐召,王洺鑫,等.济南长清黄河公路大桥主桥设计方案比选[J].桥梁建设,2016,46(4):97-100.WANG Zhiying,XU Zhao,WANG Mingxin,et al.Comparison and Selection of Design Schemes for Main Bridge of Changqing Huanghe River Highway Bridge in Jinan[J].Bridge Construction,2016,46(4):97-100.
[7] 戴胜勇,艾宗良,杨善奎.客运专线4线双桁钢桁连续梁桥面系设计研究[J].铁道标准设计,2009,53(8):38-40.DAI Shengyong,AI Zongliang,YANG Shankui.Design and Research on Deck System of Four Line Double Truss Steel Truss Continuous Girder Bridge for Passenger Dedicated Line [J].Railway Standard Design,2009,53(8):38-40.
[8] 龚中平,戴利民,郑本辉.椒江二桥主桥方案设计[J].公路,2010,55(3):56-59.GONG Zhongping,DAI Limin,ZHENG Benhui.Conceptual Design of Main Bridge of Second Jiaojiang Bridge[J].Highway,2010,55(3):56-59.