Abstract
An experimental investigation is performed on various cold-formed profiled sheets to study the connection behavior of composite deck slab actions using bolted shear connectors. Various profiles like dovetailed (or) re-entrant profiles, rectangular profiles and trapezoidal profiles are used in the present investigation. This experimental investigation deals with the evaluation of various parameters such as the ultimate load carrying capacity versus deflection, load versus slip, ductility ratio, strain energy and modes of failure in composite slab specimens with varying profiles. From the test results the performance of dovetailed profiled composite slabs’ resistance is significantly higher than the other two profiled composite deck slabs.
Highlights
Composite construction is gaining more importance all over the world due to the effective utilization of concrete and steel
The composite construction consists of composite beams, composite columns and composite deck slabs
The performance of composite deck slabs is similar to traditional reinforced concrete (RC) slabs, but the main difference lies in the fact that, in composite slabs the profiled steel sheet is effectively utilized with higher significant cross-sectional area
Summary
Composite construction is gaining more importance all over the world due to the effective utilization of concrete and steel. The coldformed profiled sheet used in composite slab systems performs two important functions It acts as a formwork while casting concrete and it works as a substitute for the main steel life-time tension reinforcement. The cold-formed steel sheet is rolled into a specific profile or shape to increase its cross-sectional area. It provides high resistance in composite slab systems. The longitudinal shears were mainly transferred across the cold-formed steel sheet and concrete interface by friction. Using cold formed profiled steel sheet becomes very important in the composite slab construction and many researchers have carried out investigations. The effects of profiles of various types using cold-formed sheets are developed for the composite slab construction
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