In the paper, methods and researches of engineering structural crack detection based on vibration diagnosis are reviewed.

本文综述了基于工程结构裂纹的振动诊断方法。

youdao

Then the structural accident of total section drive-through type crack is caused in arch frame top chord, which is induced by hoisting and detection using pulley arbitrarily.

铜绿山矿某三铰拱屋架单轨吊梁结构体系，因技术改造增加设备简体重量，随意用滑轮组起吊检修，导致拱架上弦全截面贯通式开裂的结构事故。

youdao

Then the structural accident of total section drive-through type crack is caused in arch frame top chord, which is induced by hoisting and detection using pulley arbitrarily.

铜绿山矿某三铰拱屋架单轨吊梁结构体系，因技术改造增加设备简体重量，随意用滑轮组起吊检修，导致拱架上弦全截面贯通式开裂的结构事故。

youdao