Abstract:
With the purpose of enhancing the behavior of reinforced concrete (RC) shear wall subjected to compression bending,the fiber-reinforced concrete (FRC) was applied in the critical locations of shear walls suffering inelastic deformation to replace normal concrete. Considering the high strain-hardening in tension behavior of FRC and the effect of steel sleeves, experimental results of six FRC shear walls with high axial load ratio were analyzed, and a simple calculation method for moment-curvature of the eccentrically compressed FRC shear walls was presented corresponding to the four damage states of walls, including cracking, yielding, peak loading and ultimate loading, and the main factors influencing the compressive bending behavior of shear walls at different states were discussed. It is shown that the proposed moment-curvature calculation method can be used to predict the load-deformation relationship of FRC shear walls accurately. Compared with conventional RC shear walls, the application of FRC, which has high tension capacity, increases moment resistance, as well as reduces deformation demand of wall cross-section at the limit state of serviceability. The combination of the ductile FRC and steel reinforcement improves deformation capacity and damage tolerance at the ultimate limit state.