Abstract
In this study, test results of 12 prestressed concrete beams without shear reinforcement and 12 prestressed reinforced concrete beams are used in order to evaluate the effects of prestress level and prestress distribution across the section on shear capacity. Shear force carried by concrete is calculated according to JSCE code, ACI code and the modified compression field theory, and so on. Those values are compared with the experimental results. From these results, a simple method, which considers the effect of prestress including stress distribution across the section as well as the inclination of diagonal crack on shear capacity, is proposed.
