现浇箱梁桥预应力钢束顶板张拉和腹板张拉方案比较

Tensioning Scheme Comparison of the Cast-in-site Pre-stressed Concrete Continuous Box Girder Bridge

结合施工实例,介绍多联现浇预应力连续箱梁桥在工期紧张情况下分段同时施工的方法,用桥梁博士软件验算主梁内力和强度,比较了预应力钢束腹板张拉和顶板张拉两种施工方案的优劣,为同类桥梁施工提供借鉴。

Combined with a real bridge construction project of Fuzhou,two methods of section and simultaneously construction of multi-span,cast-in-site,prestresssed concrete continuous box girder bridge with limited construction time is introduced in this paper.The computational checking of the bridge structure shows advantages and disadvantages of both methods.It can offer reference for similar bridge construction projects.