下白石特大桥空间曲线孔道摩擦损失分析及测试

Analysis and Test On Friction Loss Between Tendons and Duct Wall with Dimensional Curve on the Xia-Bai-Shi Great Bridge

本文结合福建宁德下白石特大桥的预应力混凝土连续梁桥空间曲线孔道摩擦损失的测试,通过空间曲线的数值分析和测试方法的对比研究,给出了合理的孔道摩擦损失测试方法。其结果对预应力混凝土结构的应力和变形计算,提供了可靠的数据,确保了工程质量。

As introduced in this article, a test of friction loss between tendons and duct wall with dimensional curve was done on the Xia-Bai-Shi great bridge of Ning-De city in Fujian Province, and a comparatively reasonable testing method was generated through data analysis of dimensional curve. The conclusion will provide reliable parameter references for calculating stress and deformation of prestressed concrete structure, and guarantee good quality of the project.