预应力锚杆在张拉锁定时应力损失的应用技术

Application technology of stress loss of pre-stressed anchor during stretch locking

根据对锚杆的现场测试,发现锚杆在张拉力及锁定时存在显著的预应力损失问题,并对其产生的原因进行了分析,提出了解决问题的几种办法,以达到设计所要求的张拉锁定值。

According to on-site test results of anchor the obvious stress loss problem of prestressed anchor during stretch locking is found. Based upon analysis of its causes corresponding resolving measures are proposed in order to meet designed requirements for stretch locking of prestressed anchor.