Abstract Push tests as suggested in Eurocode 4 have been widely used to determine the shear strength of stud shear connectors. In the presence of profiled steel sheeting, however, the push load is jointly resisted by both types of components, i.e., shear studs and sheeting. As a result, the exact load carried by a shear stud remains unknown. This paper intends to study the load sharing mechanism between the shear studs and sheeting in push tests through the development of a three-dimensional finite element model. It is found that the sheeting itself can carry 20–65% of the push load when the thickness of the sheeting is in the range of 0.9–1.5 mm. Accordingly, the actual load resisted by the shear studs is much lower than the prediction of Eurocode 4, which does not exclude the strength contribution from the sheeting. A parametric analysis is conducted to check the influence of a wide range of parameters including sheeting orientation, stud position and layout, diameter and height of studs, concrete grade, rib height, sheeting thickness, yield stress of sheeting, and level of transverse loading on the load sharing between studs and sheeting in composite slabs with trapezoidal steel sheeting. Finally, the ultimate push load and the actual stud strength obtained from parametric analysis are compared with the predictions from Eurocode 4. The comparison indicates that the accuracy of Eurocode 4 in predicting the ultimate push load can be improved. Meanwhile, new models are required to predict the actual shear strength of studs.

中文翻译：

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推力试验中剪力钉与压型钢板的荷载分担机制

摘要 欧洲规范 4 中建议的推力测试已被广泛用于确定螺柱剪切连接器的剪切强度。然而，在存在压型钢板的情况下，推力由两种类型的组件共同抵抗，即抗剪螺栓和钢板。因此，抗剪螺栓承载的确切载荷仍然未知。本文旨在通过建立一个三维有限元模型来研究推力试验中抗剪螺栓和薄板之间的载荷分配机制。研究发现，当片材的厚度在 0.9-1.5 毫米范围内时，片材本身可以承受 20-65% 的推力。因此，抗剪螺柱抵抗的实际载荷远低于欧洲规范 4 的预测，该预测不排除板的强度贡献。进行参数分析以检查各种参数的影响，包括板的方向、螺柱位置和布局、螺柱的直径和高度、混凝土等级、肋高度、板厚度、板的屈服应力和横向载荷水平梯形钢板复合板中螺柱和板之间的载荷分配。最后，将参数分析得到的极限推力和实际螺柱强度与 Eurocode 4 的预测进行比较。比较表明，Eurocode 4 预测极限推力的精度可以提高。同时，需要新的模型来预测螺柱的实际抗剪强度。螺柱的直径和高度、混凝土等级、肋高度、板厚度、板的屈服应力，以及梯形钢板复合板中螺柱和板之间的荷载分担的横向载荷水平。最后，将参数分析得到的极限推力和实际螺柱强度与 Eurocode 4 的预测进行比较。比较表明，Eurocode 4 预测极限推力的精度可以提高。同时，需要新的模型来预测螺柱的实际抗剪强度。螺柱的直径和高度、混凝土等级、肋高度、板厚度、板的屈服应力，以及梯形钢板复合板中螺柱和板之间的荷载分担的横向载荷水平。最后，将参数分析得到的极限推力和实际螺柱强度与 Eurocode 4 的预测进行比较。比较表明，Eurocode 4 预测极限推力的精度可以提高。同时，需要新的模型来预测螺柱的实际抗剪强度。将参数分析得到的极限推力和实际螺栓强度与Eurocode 4的预测进行比较。比较表明，Eurocode 4预测极限推力的精度可以提高。同时，需要新的模型来预测螺柱的实际抗剪强度。将通过参数分析得到的极限推力和实际螺栓强度与 Eurocode 4 的预测进行比较。比较表明，Eurocode 4 预测极限推力的准确性可以提高。同时，需要新的模型来预测螺柱的实际抗剪强度。