斜拉式混凝土连续桁梁预应力施工

Prestressed Construction of Beam with Cable Stayed Concrete Continuous Truss for Weiyun River Extra Long Bridge of Jing Jiu Railway

本文介绍了卫运河特大桥斜拉式混凝土连续桁梁预应力施工技术，对复杂预应力结构的孔道成孔方法、钢铰线张拉顺序的确定、张拉力控制方法、孔道压浆工艺进行了详细论述，提出了预应力施工中有关施工计算的方法，并对卫运河桥桁梁结构施工进行了简要介绍。

This paper introduces the prestressed construction technique of the beam of Weiyun River extra long bridge with cable stayed concrete continuous truss. The construction methods of prestressad aperture of complex prestressed structures, the determination of the tensional sequence of steel cables, the methods of prestressed force control and the art for grouting prestressed apertures are discussed in detail. Calculating methods on prestressed construction are presented, and the construction works of the structures of the Weiyun River major bridge are described briefly in this paper.