Through the finite element software Ansys, setting the contact pair and real constant parameters, and the shear nail connector model of a steel plate composite beam is established accurately. Analyzing the ultimate shear bearing capacity of shear nails under the influence of different concrete strength grades, the length, diameter and material strength of shear nails.According to the shear bearing capacity of bolts, the shear failure forms of composite steel plate beams are analyzed, which provides references for practical application and design calculation in the future. Keywords: steel plate composite beam;Bolted shear coupling;Ansys;Ultimate bearing capacity

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