后张拉预应力现浇连续箱梁施工技术

Construction Technology of Post Tensioning Prestressed Cast-In-Place Continuous Box Girder

预应力混凝土连续箱梁具有跨度大、施工方法灵活等优点,在桥梁中得到广泛应用。结合某桥梁施工实例,从施工准备、混凝土浇筑、预应力筋张拉与锚固、孔道压浆等方面系统地探讨了预应力箱梁的施工过程,并总结施工中的注意事项,可为同行提供参考。

Prestressed concrete continuous box girder is widely used in bridge due to its advantages of large span, flexible construction methods, etc. Combined with the example of a bridge construction, from the aspects as construction preparation, pouring concrete, tension and anchoring of prestressing tendon, duct grouting, and so on, the paper systematically explores the construction process of prestressed concrete box girder, summarizes the points for attention in construction, which can offer reference for the peer.