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通过3根模型梁试验,研究了带裂缝焊接钢吊车梁在偏心集中荷载作用下,上部区域的应力分布及应力变化规律,提出了偏心集中荷载在腹板上部产生的局部附加应力是导致吊车梁上部区域裂缝形成与开展的主要原因.
Based on three model beam tests, the stress distribution and stress variation of the welded steel crane girder with a crack under eccentric eccentric load are studied. The local additional stress generated by the eccentric concentrated load on the upper part of the web is caused by the fact that the crane beam The main reason for the formation and development of cracks in the upper region.