Appropriate transfer of the shear force of a perfobond strip used as a shear connector in steel concrete hybrid structures depends on the restraining effect around the strip, and hence, the arrangement of the surrounding reinforcements is very important to improve the restraining effect. However, when the perfobond strip is arranged in narrow joint structures and when the rapid construction is also required, reinforcements are undesirable on the site. An alternate method to improve the restraining effect around the perfobond strip is to use steel fiber-reinforced mortar (SFRM). This study aims to evaluate appropriately the shear capacity of a perfobond strip with SFRM without surrounding reinforcements for narrow joint structures. Assuming these conditions, pull-out tests were conducted, and the data obtained were considered along with the results of push-out tests conducted in the previous study of the authors. Based on the results of both test series, the impacts of various factors on the shear capacity of the perfobond strip was analyzed comprehensively. The results showed that the shear capacity of a perfobond strip with SFRM increases with the perforation diameter, SFRM compressive strength, volume content of steel fibers in the mortar, and dimensions of the mortar block around the perfobond strip. Moreover, the plasticization of the perfobond steel plate and the difference in boundary conditions between the push-out and pull-out tests also affect the shear capacity of the perfobond strip. An equation was proposed for evaluating the shear capacity of the perfobond strip with SFRM without any surrounding reinforcements for narrow joint structures. The shear capacity obtained using the proposed equation has high correlation with the experimental value for both push-out and pull-out specimens.

在钢混凝土混合结构中用作剪切连接器的全粘结带的剪切力的适当传递取决于带周围的约束效果，因此，周围钢筋的布置对于提高约束效果非常重要。但是，当性能粘结带布置成狭窄的接头结构时，并且还需要快速构造时，在现场就不需要增强材料。改善粘结带周围约束效果的另一种方法是使用钢纤维增强砂浆（SFRM）。这项研究旨在评估带有SFRM的Perfobond条带的剪切能力，而SFRM在没有窄缝结构的周围钢筋的情况下。假设这些条件，进行了拉拔测试，并将获得的数据与作者先前研究中进行的推出测试的结果一起考虑。基于这两个测试系列的结果，综合分析了各种因素对性能粘结带剪切能力的影响。结果表明，SFRM粘结带的剪切能力随射孔直径，SFRM抗压强度，砂浆中钢纤维的体积含量以及粘结带周围的砂浆块的尺寸而增加。此外，Perfobond钢板的增塑以及推拉试验和拉拔试验之间的边界条件差异也影响了Perfobond钢带的剪切能力。提出了一个方程来评估带有SFRM的Perfobond带材的抗剪承载力，而对于窄缝结构，它没有任何周围的钢筋。使用所提出的方程获得的剪切能力与推拉式和拉出式试件的实验值高度相关。