浅述现浇箱梁桥预应力钢束顶板张拉施工——以福州西园1号分离式特大桥和福州北互通主线1号桥为例

Introducing the Tensioning Steel Method of Cast-in-site Concrete Continuous Box Girder

结合福州西园1号分离式特大桥和福州北互通主线1号桥的施工实例,用桥梁博士软件验算主梁内力和强度,介绍多联现浇预应力连续箱梁桥分段同时施工的方法,论证现浇箱梁桥张拉钢束至顶板方案可行性,为同类桥梁施工提供借鉴。

Combined with the project of Fuzhou Xiyuan Separated Bridge and the No.1 Bridge of north Fuzhou interchange main line,a method of section and simultaneously construction of multi-span,cast-in-site, prestresssed concrete continuous box girder bridge is introduced in this paper.The computational checking of the bridge structure shows that tensioning of closure prestressed steel strands to roof is practicable,reliable and can ensure construction quality.