Firstly, analyze the main girder stress in different stage in the paper.
首先，本文分析了桥梁成桥阶段应力。
The results show that the crane is unnecessary to replace for its low total stress level and large strength margin of the main girder (main stressed part).
计算结果指出：门机结构总体应力水平较低，其严重受力件主梁具有较大的强度富裕度，不必更换。
Analysis of deflection of main girder of crane is made according to the result of residual stress test.
根据残余应力测试的结果，对起重机主梁的下挠变形进行了分析。
应用推荐