抄録
The purpose of this study is theoretically to clarify the ultimate shear strengths and the deformations of reinforced concrete beams with web reinforcement, subjected to combined bending moment and shear. To achieve it, ultimate equilibrium method based on the energy principle is applied. The proposed equations which are derived by equilibrium condition of force and moment for the failure surface on the ultimate state are compared with test results and good agreement is noted. And, compatibility condition of strains on the shear element is considered to predict the failure mode of beams. Also, the interaction between bending moment and shear is proposed.
