体外预应力张拉修复桥式起重机主梁下挠分析

Analysis of Main-Beam Turndown for the Body-out Pre-stress Stretching Repairing Overhead Crane

通过对起重机工作特点及场所的说明,找出主梁下挠的原因及主梁下挠对起重机的危害,提出体外预应力张拉修复技术的原理及修复方案,解决了主梁下挠的问题。

It analysed that the character and site of overhead crane,find out the reason of main-beam turn- down and the harm to the crane,put forward the principle of body-out pre-stress stretching repairing technology and repairing programe,solved the problem of main-beam turn down.