铁路大跨度钢管混凝土系杆拱桥设计计算

Design Calculation of Railway Long-span Concrete-f illed Steel Tube Tied Arch Bridge

以某铁路大跨度钢管混凝土拱桥为工程背景,在详述该结构构造形式及结构尺寸的基础上,利用有限元程序对系梁、拱肋、吊杆等结构关键部位及结构整体进行了受力及变形分析,以期验证结构形式和结构尺寸的合理性。通过计算分析验证了该桥结构设计合理,受力变形满足规范要求。同时也可为类似桥梁设计提供参考。

A railway large-span concrete-filled steel tube arch bridge was studied in this paper. Its structure and size were introduced. With finite element method, both global and local responses were evaluated to validate the rationality of design. The key components including spring-beam, arch and suspension rod were analyzed. The calculation results show that the strength and the deformation meet the requirements of relevant codes.