空间曲线预应力束摩阻损失参数

The Parameters u、k for Describing the Attrition Loss of Prestress Tightwire with Space Curve

针对空间曲线预应力束摩阻损失较大的情况 ,结合某座立交工程中的曲线梁桥的预应力摩阻损失测试 ,利用最小二乘原理得出了预应力摩阻损失参数μ、k,为施工提供依据 。

The attrition loss of prestress tightwire with space curve used in cuve girder bridge is more bigger than the one of beeline tightwire. Taking a curve girder bridge at a crossroad as an example, and using the least square method, the parameters μ?k for describing the attrition loss was calculated. The results show that the parameters μ?k can provide a reference for the construction of curve girder bridge and for the calculation of other curve prestress bridge's attrition loss of prestress.