Xiaolan Waterway Bridge on New Nansha Port Railway in Guangzhou is a super major cable-stayed bridge with the main span of 200 meters, which is used for both the highway and railway. If the highway and railway are arranged at the different layer of bridge deck as traditional way, the line extension will be too long. To solve this problem, the highway and railway are creatively arranged at the same layer of bridge deck in the design of the stiffening beam. And then separated steel box girder and H-shaped bridge towers are used in this bridge with a novel, simple and beautiful appearance. Through overall and partial finite element analysis, all requirements stipulated in relevant standards can be complied with. Furthermore, this project provides a reference for future similar projects.%新建广州南沙港铁路小榄水道大桥主桥为主跨200 m公铁两用斜拉桥,为解决传统分层布置线路展线过长的问题,在加劲梁的设计中创造性地采用公路与铁路同层布置,梁体采用分离式钢箱结构,桥塔采用H形桥塔,桥型新颖、线形优美、简洁美观.通过对结构整体与局部的有限元分析,满足规范各项指标要求,为今后类似工程的设计提供借鉴.
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