大跨连续钢桁拱-梁组合体系桥梁在万州长江铁路大桥的应用

Applicationd of Long-Span Hybrid System of Continuous Steel Truss Arch-Girder to Wanzhou Changjiang River Railway Bridge

概要介绍万州长江铁路大桥因应所处建设条件,主桥采用三跨连续钢桁拱-梁组合体系桥梁新技术的方案比选情况、结构布置及静力分析结果;分析介绍了横向刚度问题、稳定问题及桥面结构的设计思路。指出本桥的设计与建设将大跨度铁路桥梁的发展推进到更具多样性选择的新层次。

This paper describes the comparison process, structural layout and static analysis of the 3span hybrid system of continuous steel truss archgirder selected for Wanzhou Changjiang River Railway Bridge in order to accommodate the construction conditions at the Bridge site. The paper also analyzes issues of design considerations for bridge transverse rigidity, stability and deck system structure design, and points out that the design and construction of the Bridge will promote the longspan railway bridge to a new level of more choices.