Flexural behaviors analysis of ECC-RC composite beams reinforced with FRP bar based on OpenSees

Based on the finite element analysis software OpenSees, the flexural behaviors of ECC-RC composite beams reinforced with FRP bars is analyzed. The results show that cracking, yield and ultimate moment increase with the increasing of height replacement rate and the increasing rate slow down gradually. Yield and ultimate moment increase with the increasing of reinforcement ratio or reinforcement strength. The stiffness of ECC-RC composite beams reinforced with steel bars essentially unchanged after the cracking of ECC. Stiffness decreasing of ECC-RC composite beams reinforced with FRP bars is slower than RC beams reinforced with FRP bars after cracking.