Seismic behavior of prefabricated fiber reinforced concrete energy-dissipation wall under cyclic loading

The energy dissipation devices were applied to improve the seismic performance and lateral stiffness of high-rise reinforced concrete (RC) frame. Fiber reinforced concrete (FRC) is an ideal material used as energy dissipation devices due to its strain hardening phenomenon and multi-crack development failure mode. To investigate the seismic performance of FRC energy-dissipation wall (FRCEDW), four specimens with different aspect ratio, connection method and reinforcement form were designed and fabricated. The seismic performance included damage mode, bearing capacity, deformation capacity and energy dissipation performance were investigated under cyclic test. The results show that: the FRCEDW experienced shear dominated flexural-shear failure, accompanied by a significant number of fine cracks. The specimens show good deformation capacity with a ductility coefficient greater than 2 and the equivalent viscous damping ratio greater than 0.125, which means FRCEDW can used as additional dampers in prefabricated structures. When the aspect ratio increased from 2.27 to 2.83, the ductility factor changed from 2.14 to 2.44 increased by 12.3 %. Finite element analysis was conducted using OpenSEES. The SFI-MVLEM modeling method had been proven accurately simulate the hysteresis response of FRCEDW under cyclic loading. The research results can give references to the further application of FRCEDW-RC frame structures.