RESEARCH ON SHEAR BEARING CAPACITY AND DUCTILITY OF HIGH STRENGTH REINFORCED RPC BEAM

By the shear experiment of 6 high strength reinforced reactive powder concrete beams, we analyzed the factors influencing the beam’s damage pattern, shear capacity and shear ductility. The research shows that the shear span ratio, stirrup ratio and longitudinal reinforcement ratio are the key factors of high strength reinforced reactive powder concrete beams, among them the shear span ratio has the most significant influence; with the increase of longitudinal reinforcement ratio, the capacity and inclined crack angle of beams without stirrups increase, and the shear capacity decreases, but the inclined crack angle of beams with stirrups does not change obviously under the condition of suitable shear span ratio; improving the longitudinal reinforcement ratio can not only enhance the shear bearing capacity of the beam, but also effectively improve the shear ductility.