| Crane girder is one of the most important members in industry workshop. High operation frequency steel crane girder is susceptible to fatigue damage after long period of usage. It is most common that fatigue damage manifests as web cracks in the variable cross-section, and vertical cracks in the weld between web and top flange.This paper aims at the molten steel 24 m receiving span crane girder as the main object, based on the detection results of molten steel receiving span and feed span from the main steel-making workshop in Shandong Steel Co., Ltd. ABAQUS large finite element software was employed to construct a finite element model of molten steel 24 m receiving span and the corresponding actuating system. Analysis was mainly performed on the factors contributing to the variable cross-section crack and the weld crack between girder web and the top flange.With the help of ABAQUS finite element analysis, the extraordinary anti-fatigue performance brought by the end plates on the right-angle support of steel crane girders is indisputable. In addition, angle steel should be added at end plates and insert plates to strengthen connections. |
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