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通过 3根模型梁试验及有限元分析 ,研究了焊接钢吊车梁在偏心集中荷载作用下 ,裂缝区域应力分布规律 ,提出吊车梁腹板剪应力和主拉应力分别循环是导致裂缝扩展的根源
Through the three model beam tests and the finite element analysis, the stress distribution law of the welded steel crane beam under the eccentric concentrated load is studied. It is proposed that the cyclic stress and the main tensile stress of the crane beam web cycle are the root causes of the crack propagation