东江南特大桥预应力孔道摩阻损失试验研究

Structural monitoring and assessment for a cable-stayed bridge based on dynamic test

介绍东江南特大桥孔道摩阻试验的方法,用最小二乘法得出预应力损失参数k,μ值,试验结果表明该管道摩阻的试验原理及计算方法是可行的,可作为设计单位修正预应力钢筋混凝土结构实际张拉力的重要参考值并作为施工单位进行张拉质量控制的依据。

This paper introduced the duct frictional test methods of Dongjiang Nantes bridge,and used least squares method to get the values of pre-stress loss parameters k,μ.The test results show that the pipe frictional test theory and method of calculation is feasible,it can be used as an important reference to amend the actual tension value of pre-stress reinforced concrete structure for design company and for the construction company to control the quality of tension.