桥梁施工中先张法应用要点

Application points of pre-tensioning method in bridge construction

结合蒙山大街与滨河西路互通立交工程现场施工情况,从预应力受力的原理、施工工艺、管道及预应力筋、预应力筋和模板的安装、锚具、张拉等方面进行阐述,并对先张法预应力施工与后张法进行对比,从而加深对预应力施工的了解,以便在施工中能够正确选择合理的施工方法。

Combining with the in-situ construction conditions of the interchange project of Meng mountain street and west Bin river road,the paper illustrates the prestress principles,construction technology,pipeline,prestressed reinforcement and template installation,anchorage and tension,compares the advanced pre-tensioning prestress construction with the post-tensioning construction method,and gets a further understand about the prestressed construction,with a view to select rational construction methods in construction in future.