单塔双索面双层钢桁梁斜拉桥结构设计  

Structural Design of Double-Deck Steel Truss Girder Cable-Stayed Bridge with Single Tower&Double-Cable Planes

作　　者：葛艳丽 费梁 GE Yan-li;FEI Liang(Southeast University Architectural Design&Research Institute Co.,Ltd.,Nanjing 210018,China)

机构地区：[1]东南大学建筑设计研究院有限公司,江苏南京210018

出　　处：《中国市政工程》2024年第6期6-9,153,154,共6页China Municipal Engineering

摘　　要：风荷桥位于浙江省湖州市,是湖州市二环西路跨越龙溪港的重要节点。其主桥采用单塔双索面双层钢桁梁斜拉桥,跨径布置为(90+128)m。该桥采用半漂浮体系,塔高87 m,主梁采用制造安装方便、受力性能良好及经济合理的2片直桁矩形断面,及华伦式三角形腹杆体系,桁宽15.35 m,桁高10.52 m,主跨节间长12.00 m,边跨节间长9.00 m。文章对风荷桥主桥总体设计参数进行阐述,并利用有限元软件进行总体结构受力分析及局部节点分析。设计实践证明:单塔双索面双层钢桁梁斜拉桥不仅结构安全可靠,功能完善,且通透美观。The Fenghe Bridge is located in Huzhou,Zhejiang.It is an important node of West Second-Ring Road across Longxi Portin Huzhou.The main bridge is a double-layer steel truss girder cable-stayed bridge with single tower and double cable planes,with a span of(90+128)m.The bridge adopts a semi-floating system with a tower height of 87 m.The main beam adopts 2 straight girder rectangular sections,which are easy to manufacture and install,good force performance and economical,and the Warren type triangular belly bar system,the girder width is 15.35 m,the girder height is 10.52 m,the main span joint length is 12.00 m,and the side span joint length is 9.00 m.This paper expounds the overall design parameters of the main bridge of the wind load bridge,and uses the finite element software to carry out the overall structural stress analysis and local node analysis.The design practice has proved that the single-tower double-cable planes double-deck steel girder cable-stayed bridge is not only safe and reliable in structure,perfect in function,but also transparent and beautiful.

关 键 词：双层钢桁梁斜拉桥 总体结构 局部节点分析 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]