预应力混凝土连续梁的合龙关键技术分析

Analysis on Key Technology for Closure of Pre-stressed Concrete Continuous Girder

挂蓝悬臂施工预应力混凝土连续梁的合龙是施工中的关键工序。不同的合龙方案将会产生不同的结果。该文结合工程实例,研究了挂蓝悬臂施工连续梁的合龙关键技术,分析了在不同合龙方式和不同预应力张拉顺序的情况下连续梁的位移变化。由此得出一些有益的结论,可以作为工程设计中的参考依据。

The closure of pre-stressed concrete continuous girder by the form traveler cantilever construction is a key working procedure in the construction.The different schemes will give the different results.Combined with the engineering cases,the article studies the key technology of closing the continuous girder by the form traveler cantilever construction,and analyzes the displacement variation of continuous girder by the different closure modes and the different pre-stressing tensioning Sequences.Thus,some beneficial conclusions can be referred for the engineering designs.