多布水电站预应力锚索荷载损失问题研究

Study on Load Loss of Prestressed Anchor Cable,Duobu Hydropower Station

针对多布水电站右岸边坡支护过程中发现预应力锚索在张拉施工后预应力荷载损失较大的情况,以锚索测力计的实际测值为研究切入点,结合多次现场试验和理论研究,分析预应力锚索荷载损失的原因,查明了预应力锚索弹性变形与锁定荷载的关系,提出了解决办法,并在工程中实际应用。

In slope support on right bank, Duobu Hydropower Station, it finds that the prestressed load of the prestressed anchor cable after being tensioned largely loses. Concerning this loss, the loss value measured by dynamometer is studied. In combination with site tests and theoretical analysis, causes for the load loss are explored, relation between the elastic deformation and locked load of the prestresssed anchor cable is investigated clearly. Solution is seeked and further applied in engineering practice.