A Study on Steel Fibre Reinforced Concrete Deep Beams With and without Openings

This experimental study deals with the behavior and ultimate strength of steel fiber reinforced concrete (SFRC)deep beams with and without openings in web subjected to two- point loading, nine concrete deep beams of dimensions 750mm×350mm×75mm thickness were tested to destruction by applying gradually increased load. Simply supported conditions were maintained for all the concrete deep beams. The percentage of steel fiber was varied from 0 to 1.0.The influence of fiber content in the concrete deep beams has been studied by measuring the deflection of the deep beams and by observing the crack patterns. The investigation also includes the study of steel fiber reinforced concrete deep beams with web reinforcement with and without openings. The ultimate load obtained by applying the modified Kong and Sharp's formula of deep beams are compared with the experimental values. The above study indicates that the location of openings and the amount of web reinforcement, either in the form of discrete fibers or as continuous reinforcement are the principal parameters that affect the behavior and strength of deep beams.