Modelling aspects of interface interlock in composite floors

Abstract

The subject of the ongoing research work is to analyze the composite action of the structural elements of composite floors by experimental and numerical studies with a special focus on the rolled embossments on the steel surface. The mechanical and frictional interlocks result in a complex behaviour and failure under horizontal shear. This is why the design characteristics can be determined only by standardized experiments. The aim of the current research is to determine the longitudinal shear resistance for composite floors, by applying advanced numerical model. The paper has a focus on the basic numerical models with particular considerations on the concrete model and on the numerical model of rolled embossments.