谈乍嘉苏C匝道大桥连续箱梁张拉问题的控制

Continuous Box Beam Tension Problems Control of Zhajiasu C Ramp Bridge

随着预应力桥梁跨径增大,预应力筋曲线布束、单端张拉在建设中被广泛应用,但设计、施工中往往对长束、曲线束预应力筋张拉应力损失欠重视或处理不当,造成结构应力不足。针对乍嘉苏C匝道大桥预应力张拉问题,阐述一些体会和看法,讨论分析桥梁预应力长束、曲线束张拉力控制问题的处理。

With the development of prestressed concrete bridge span increases, curved prestressed reinforcement cloth bundle, one-end tension is widely used in construction, but the design, construction, often on the long beam curve beam prestressed tension stress loss less attention to or handledproperly, resulting in lack of structure stress. The prestressed Zhajiasu C ramp bridge tension problems, expounds some experience and views, discussion and analysis of the treatment of bridge long prestressed beam, curved beam tension control problems.