预应力混凝土箱梁桥的预应力损失成因及控制

On reasons for prestressed damage of concrete box girder bridge and controlling methods

结合具体工程实例,对预应力混凝土箱梁桥的预应力损失原因进行了分析,探讨了预应力损失的组成,阐述了预应力张拉施工时扁锚体系出现伸长值不足的原因,并提出了相应的控制措施,以期指导实践。

By combining with factual projects, the paper analyzes the prestressed damage reasons on the prestressed concrete box girder bridges, explores the components of the prestressed damage, and illustrates the reasons for shortage of the flat anchorage system in the pre- stressed tension construction, and points out some relative controlling measures, so as to direct the practice.