This study investigates the influence of five key parameters on the shear behavior of polyvinyl alcohol fiber-reinforced concrete (PVAFRC) beams using the general-purpose finite element software ANSYS. The examined parameters include the volume fraction of PVA fibers, the longitudinal steel reinforcement ratio, the yield strength of longitudinal reinforcement, the transverse reinforcement ratio, and the yield strength of vertical stirrups. Due to the strong bond between PVA fibers and concrete, an increase in Vf is expected to enhance the shear capacity of PVAFRC beams. In reinforced concrete (RC) beams, PVA fibers mitigate premature shear crack formation and slow crack propagation by bridging microcracks. Increasing ps significantly improves shear capacity while reducing strain ductility and deflection. A minor enhancement in shear capacity is observed with an increase in Fy, whereas a slight reduction in deflection and a marginal improvement in shear failure load is noted with an increase in pv. Furthermore, increasing pv enhances both shear capacity and strain ductility. However, a substantial improvement in both shear capacity and ductility is observed when Fyv is increased for PVAFRC beams with the same pv. |
