某立交桥梁体后张法预应力筋伸长值偏差探讨

Discussion with regard to the deviation of extensive value of prestress reinforcing bars in post- tension technology for a certain cross bridge

针对工程中常见的预应力筋后张法施工中出现伸长值偏差的问题 ,分析了出现问题的原因 ,并通过使用检算方法来验证施工伸长值是否满足施工质量要求 ,对解决此类问题有一定的参考价值。

The deviation of extensive value of prestress reinforcing bars in post tension technology is a common project problem. Aimed at this, the reasons resulted in this phenomena are studied. And to meet the construction quality demands a new approach examining the extensive value of prestress reinforcing bars is given. The result found that this approach may provide references for similar projects.