BEHAVIOR OF FLAT SLABS WITH SHEAR REINFORCEMENT IN PUNCHING

Abstract

At this research, we have studied the effect of shear reinforcement in the shape of vertical stirrups on punching shear behavior of flat plates. In this regards eleven specimens were tested to study the effect of shear reinforcement on punching shear. Two specimens were the control specimens without vertical stirrups, the remnant specimens were reinforced with different arrangements of vertical stirrups. The variables which took into consideration at this research included stirrups spacing, slabs thickness, the width of stirrups, a cut-off distance of stirrups from column face, and the number of stirrups branches. The results indicated that there is a significant improvement in punching shear capacity of the slabs which were reinforced by vertical stirrups. As for, the theoretical part of the experimental results were analyzed and compared with the estimated values from guidelines of various global design codes as ECP, ACI, and BS code.