The loading capacity in the axial direction of a bolted thin steel plate was investigated. A refined numerical model of bolt was first constructed and then validated using existing experiment results. Parametrical analysis was performed to reveal the influences of geometric parameters, including the effective depth of the cap nut, the yield strength of the steel plate, the preload of the bolt, and shear force, on the ultimate loading capacity. Then, an analytical method was proposed to predict the ultimate load of the bolted thin steel plate. Results derived using the numerical and analytical methods were compared and the results indicated that the analytical method can accurately predict the pull-through capacity of bolted thin steel plates. The work reported in this paper can provide a simplified calculation method for the loading capacity in the axial direction of a bolt.

研究了螺栓连接的薄钢板的轴向承载能力。首先构造一个精炼的螺栓数值模型，然后使用现有的实验结果对其进行验证。进行参数分析以揭示几何参数对极限载荷的影响，这些几何参数包括帽形螺母的有效深度，钢板的屈服强度，螺栓的预紧力和剪切力。然后，提出了一种分析方法来预测薄钢板螺栓的极限载荷。比较了使用数值和分析方法得出的结果，结果表明该分析方法可以准确预测螺栓薄钢板的抗拉能力。