REVALUATION OF THE EQUATION FOR SHEAR STRENGTH OF REINFORCED CONCRETE BEAMS WITHOUT WEB REINFORCEMENT

Abstract

In the past, the equation for the shear strength of reinforced concrete beams without web reinforcement had been proposed, whereas the result of large-size beam tests carried out recently revealed that the nominal shear strength was inversely proportional to the fourth root of the effective depth. Taking this fact into account, the proposed equation is revaluated and a new equation is derived. The validity of the new equation is verified by the authors using tests of large-size beams subjected to a concentrated load. Finally, suggestions concerning application of the new equation for design are mentioned .