Abstract
Shear strength of reinforced concrete beams with shear reinforcement is evaluated by two-dimensional nonlinear finite element analysis. The shear span to effective depth ratio of beams is varied between 1.5 and 3.0 and the amount of shear reinforcement is increased to 2.0% in order to investigate the effect of the high shear reinforcement ratio on the shear strength. It is confirmed that the beams with a large amount of shear reinforcement have lower shear strength than the predicted strength by the design equations. The beams with a large amount of reinforcement fail by localized compression fracture of concrete, while the strength calculated by the design equations is determined by the yield strength of shear reinforcement. The upper limit for the amount of shear reinforcement in the design equation is proposed in this report.
