Analysis of Behaviour of Contact Between the Profiled Steel Sheeting and the Concrete

In designing composite structures it is necessary to verify the following three sections: normal, diagonal and horizontal. The behaviour of composite steel‐concrete structures with external profiled reinforcement is directly dependent on the deformability and contact strength. In contact behaviour between concrete and profiled steel sheeting three stages are distinguished: the first ‐ until chemical bond is effective, the second ‐ after failure of chemical bond, the third ‐ after failure of mechanical bond when composite action is provided by friction and anchors. Deformability and contact strength is substantially influenced by the shape of the profiled sheeting, the pre‐compressing force acting perpendicularly to a contact plane and the horizontal forces restraining transversal strains of concrete. It was established by investigations that a shear strength of contact between concrete and profiled steel sheeting increases and shear strain decreases with an increase of contact between concrete and sheeting pre‐compressing forces and concrete transverse strain restraining forces.