U形预应力束管道摩阻试验研究

Research on the experiment of frictional resistance of U pre-stressed tunnel

为研究某桥塔身U形预应力束两端张拉时的孔道摩阻损失,利用索塔节段模型进行全U形孔道一端张拉时的摩阻测定,介绍了孔道摩阻测试的基本步骤,探讨了空间预应力孔道摩阻损失理论计算方法及塑料波纹管孔道摩阻系数的测定,以验证孔道摩阻设计数据。

To research the tunnel frictional resistance loss of the stretch-draw of U prestressed tunnel of on bridge, using the model of the phase of cable tower it gets the measure of frictional resistance of the stretch-draw of one end of the U tunnel, introduces the basic processes of the measure of frictional resistance of the U tunnel, discusses the theory calculation methods of frictional resistance loss of space pre-stressed tunnel and the measure of the coefficient of frictional resistance of plastic corrugates tunnel, to illustrate the design data of the tunnel frictional resistance.