The longitudinal shear behaviour of a new steel sheeting profile for composite floor slabs

Abstract

Longitudinal shear failure is the most common failure-type in composite slabs. In this paper, the shear-connection behaviour of composite slabs with a particular profiled steel sheeting having a depth of 153 mm is experimentally studied. Twenty-seven push-out test specimens of different shapes, sizes, locations of embossments and different steel sheeting thicknesses are carried out in two test series. The embossments are first rolled onto the profiled sheeting, then every embossment is punched through along one side. It is found that the shear-connection behaviour of composite slabs is significantly affected by the depth of embossments. For the profiled steel sheeting with penetrated embossments, the reduction of Young's modulus caused by the penetrated embossments is an important factor that affects the determination of the depth and width of the embossments. Finally, a new type of profiled steel sheeting, which can offer longitudinal shear strength in composite slabs up to 0.6 N/mm 2, is proposed for further research.