预应力连续箱梁桥悬臂施工及挠度控制

Prestressed Concrete Continuous Box Girder Bridge Cantilever Construction and Deflection Control

预应力连续桥梁的优点非常明显,施工非常方便、跨度大且受力合理,已经有了几十年的使用历史,技术比较成熟。预应力连续桥梁施工时需要对施工程序进行严格的控制,尤其是挠度控制,它直接影响到了桥梁的日后使用。文章对预应力连续箱梁桥的悬臂施工进行分析,确保桥梁的施工安全。

Prestressed concrete continuous bridge is very obvious, the advantages of reasonable construction is very convenient, large span and stress, have decades of history, the use of technology is more mature. Prestressed concrete continuous bridge construction need strict control on construction procedures, especially the deflection control, it di-rectly affects the future use of the bridge. In this paper the cantilever construction of prestressed concrete continuous box girder bridge is analyzed, to ensure the safety of the bridge construction.