Moment redistribution in continuous profiled steel–concrete composite slabs

Abstract

The moment redistribution behaviour of continuous cold-formed profiled steel deck and concrete composite slab was studied both experimentally and numerically. An experimental programme consisting of three two-span continuous composite slabs was performed. The experimental results indicated that the composite slabs have adequate ductility for redistributing moments, and the ultimate capacity of continuous composite slabs can be increased significantly. The short-term deflection at the increased service load satisfies the serviceability criteria. A numerical procedure to determine the negative to positive moment redistribution capacity and the corresponding deflection at serviceability for profiled steel–concrete composite slab was validated using the experimental results.