The vertical push test has historically been the primary means used to evaluate the strength of shear connectors used in steel-concrete composite floors; however, these tests can be difficult to conduct and generally their results have been shown to not well represent the behaviour of shear connectors in a full sized composite beam. This paper describes a series of twenty-four push tests on composite beam specimens with Trefoil profile steel decking and headed, through-deck welded shear connectors (shear studs) using two different test set-ups. Twelve push tests on specimens with 19 mm and 22 mm shear studs were conducted using the double sided vertically oriented setup from AS/NZS 2327 and Eurocode 4, with transverse load applied across the slab faces. Twelve further push tests were conducted on specimens with 19 mm diameter studs using a new horizontal set-up. The results of the vertical tests suggest that the equations in Eurocode 4 for the determination of design shear resistance may be unconservative for 19 mm and 22 mm shear studs in 80 mm deep Trefoil decking ribs. The horizontal test specimens showed the same poor post-peak load retention that is characteristic of push tests conducted using the vertical test set-up without the application of transverse load. These parallel test programs are an exploratory step towards understanding the differences in behaviour observed in vertical and horizontal push tests and are the initial efforts in a continuing research program to develop a horizontal push test that provides a close approximation of the behaviour observed in full-beam tests.

从历史上看，垂直推力试验一直是评估用于钢-混凝土复合地板的抗剪连接器强度的主要方法。然而，这些测试可能难以进行，并且通常已证明它们的结果不能很好地代表全尺寸组合梁中剪切连接器的性能。本文介绍了使用三叶形钢甲板和带顶头通孔焊接剪切连接器（剪力螺柱）的复合梁样本的二十四个推力测试的一系列测试，使用两种不同的测试设置。使用AS / NZS 2327和Eurocode 4的双面垂直定向装置对带有19 mm和22 mm剪切螺柱的样品进行十二次推挤测试，并在整个平板表面上施加横向载荷。使用新的水平装置，对直径为19 mm的螺柱样品进行了十二次推力测试。垂直测试的结果表明，欧洲规范4中用于确定设计抗剪强度的方程式对于80 mm深的三叶装饰板肋中的19 mm和22 mm抗剪螺柱可能不是保守的。水平测试样品显示出相同的较差的峰后负载保持力，这是使用垂直测试设置进行推力测试的特征，而没有施加横向负载。这些并行测试程序是了解垂直和水平推力测试中观察到的行为差异的探索性步骤，并且是继续研究程序开发水平推力测试以提供与全光束观察到的行为近似的水平的初步工作。测试。