Impact of Vertical and Diagonal Shear Reinforcement on the Structural Integrity of a Deep Beam

Abstract

This research investigates the shear strength behaviour of deep beams with different angles of inclinations of the transverse reinforcements with the longitudinal reinforcements. A mix ratio of 1:1½:3 of concrete was used in this investigation with a total number of three (3) deep beam models of 150×300×750 mm and the characteristic compressive strength of concrete used for the production of the beams was determined to be 14.5 N/mm2. The study concludes that the ultimate resisting load of the beam depends on the angle of inclination of the shear links and maximum with 90o inclination angle of the shear links which decreases with a decrease in the angle of inclination. Hence, all shear reinforcement must not be inclined at an angle other than 90o to the longitudinal reinforcement to avoid shear-compression failure along the shear diagonal.