先张法预应力梁施工技术探讨

京承高速附道某桥梁工程中蓄次使用先张法进行预应力梁施工,包括预应力梁张拉台的制作、预应力梁的张拉与浇注和预应力梁板的放张,取得了成效.关于施工过程中的技术要点、注意事项和施工体会的总结具有参考价值.

First-Tensioned Prestressed Beam Construction Technology

A bridge project of the subsidiary roads of Beijing-Chengde Expressway used the first-tensioned method for the first time in the construction of prestressed beam, which includes production of the tensioning stage, tension and pouring of the prestressed beam, and tension releasing of the prestressed slab, and achieved good results. The summary of the main technical points, attention matters and construction experience is of reference value.