Abstract
In this study, the degradation process of shear strength of RC members after flexural yielding subjected to cyclic loading was evaluated numerically. First, the validity of the 3-D RBSM with the proposed constitutive model subjected to cyclic loading was demonstrated by simulating the shear failure test of RC member after flexural yielding subjected to cyclic loading. Next, the degradation of shear strength was quantitatively evaluated by the proposed method, though the degradation is difficult to evaluate experimentally. As a result, it is confirmed that the degradation curves of shear strength obtained by the proposed method show similar tendency with the previous proposed formula obtained by statistical processing of the past experimental data. In addition, the effects of web reinforcement ratio, axial compressive force and main reinforcement ratio on the degradation behaviors of shear strength also were evaluated.
