Seismic research of concrete beam-column joints reinforced with HFRP

Through the earthquake resistance test of four T form beam-column joints, the regularity is studied that the high-strength glass fiber,the hybrid fiber and the fiber sticking angle in the joint region influence the node load-carrying capacity, the ductility, the energy dissipation capacity and the characteristic of load-carrying capacity deterioration and stiffness degradation. If the hybrid fiber is used, the more valid earthquake resistance performance can be obtained than carbon and high-strength glass FRP. On the condition that the same bearing capacity, the ductility and the energy dissipation can be obviously improved by hybrid fiber in the connection region as compare to carbon and high-strength glass FRP.