预应力孔道摩阻测试

Friction testing of the prestressed drill way

以福州五四北琴亭高架桥为例,结合工程概况,为了确定预应力梁的张拉效果,在施工中对钢绞线孔道摩阻损失进行了测试,并介绍了其测试步骤,分析了其测试试验结果,以进一步计算张拉后梁体实际受力情况,从而正确指导施工。

For example of the Qinting fly-over crossing in the Wusibei in Fuzhou city, it does testing to the friction loss of the steel strand drill way in the construction for determining the stretch-draw effect of the prestressed beam combined with project survey, and analyzes the testing result, which will calculate the more actual stress condition after the stretch-draw and guide construction exactly.