Punching shear testing of reinforced concrete slabs, and design implications

Non-axis-symmetrical punching shear around internal columns of RC slabs without transverse reinforcement

“…The normalised strength of PT32 and PT21 was found to be identical to similar tests with r x ¼ r y ¼ 1 . 0% from the literature (Hallgren, 1996;Papanikolaou et al, 2005;Regan, 1986). Although EC2 and BS 8110 formulas provide a good quantitative estimation of the strength, the approach is a very simplified representation of the problem.…”

­­Performance of Punching Shear Reinforcement under Gravity Loading: Influence of Type and Detailing

“…A considerable amount of research has been performed in the field and several shear reinforcement systems have been experimentally investigated. Other-than-conventional solutions composed of vertical stirrups or headed studs, unusual systems, such as stirrups that do not embrace main reinforcement, [6][7][8] combinations of continuous stirrups and bent-up bars, 9,10 inclined stirrups, 11 as well as offcuts of steel I-sections 12 have been studied. Also, the influence of placing the shear reinforcement in a cruciform or a radial pattern 13,14 and the efficiency of postinstalled shear reinforcement [15][16][17] have been studied.…”