Experimental Investigation on Shear Enhancement Types for High-Strength Concrete Plates

An experimental investigation was carried out on shear enhancement of high-strength concrete plates for six high-strength concrete slabs to study punching shear capacity and shear enhancement. Five types of different shear reinforcement, namely single bend, U-stirrup, double bend, shear-stud, and T-headed shear reinforcement, were tested and evaluated. The emphasis is placed on the evaluation of their contribution to punching shear capacity of high-strength concrete plates. Structural behaviors were evaluated in terms of overall load-deflection response, ultimate loading capacity, postultimate loading capacity, ductility and energy absorption. Failure patterns and strain distribution were also discussed.