同时跨越铁路及地铁的钢拱桥顶推施工及安全控制技术

上海市北横通道二期工程跨铁路立交桥工程位于上海机务段至上海站间,桥梁需同时上跨机务段管线、联络线共8条铁路线及轨道交通3/4号线,对施工的安全控制要求非常高。桥梁结构型式为单拱面下承式钢拱桥,采用步履式顶推施工方法,详细介绍了施工方案的制定、实施过程中的关键点,以及施工安全控制措施。通过对施工过程现场监测,结合理论计算结果进行分析,验证了设计方案的可行性,并为类似工程提供了参考价值。

Incremental Launching Construction and Safety Control Technology of Steel Arch Bridge Simultaneously Spanning Railway and Metro

The railway overpass project of Shanghai Beiheng Channel Phase II Project is located between Shanghai Locomotive Depot and Shanghai Railway Station.The bridge is required simultaneously to cross 8 railway lines of pipelines and rail links in locomotive depot,and Metro Line 3/4.The safety control requirements for the construction are very high.The structural style of bridge is a single-arch plane through steel arch bridge.The step-type incremental launching construction method is adopted.The formulation of construction scheme,the key points of implementation process and the construction safety control measures are introduced in detail.Through the site monitoring of construction process and combined with the theoretical calculation results,the feasibility of the design scheme is analyzed and verified.The reference value can be provided for the similar projects.