Experimental study on flexural performance of precast shear walls without overhung reinforcement spliced by closed joints
The quasi-static tests was carried out on six full-scale specimens of unreinforced densely spliced precast shear wall to analyse the effects of axial compression ratio and longitudinal reinforcement ratio of edge members on the bending capacity of un-reinforced densely spliced precast shear wall.The results show that:the damage area of the non-bar spliced prefabricated shear wall specimens is mainly concentrated in the insertion holes and the longitudinal notch wall.The test axial compression ratio of 0.20～0.30,the flexural bearing capacity and stiffness of the wall increases with the increase of the axial compression ratio,and when the axial compression ratio is larger,the increase is obviously reduced.When the longitudinal bar reinforcement ratio of the edge mem-bers ranges from 1.16％to 2.36％,with the increase of the reinforcement ratio,the bearing capacity and initial stiffness increase,the stiffness degradation speed accelerates and the ductility decreases.The bending capacity calculation can be carried out through the bending capacity formula of cast-in-place reinforced concrete shear wall in JGJ 3-2010 Technical Specification for Concrete Struc-tures of High-rise Buildings,and the calculation results are on the safe side.
万方数据
维普
