LOW-CYCLIC REVERSED LOAD TEST ON NEW PRECAST CONCRETE SHORT-LEG SHEAR WALL
Alow cyclic reversed load test was carried out on two new precast concrete(NPC) and one cast-in-situ short-leg shear wall specimens.Compared with the cast-in-situ specimen,the strength,stiffness,ductility and energy dissipation of NPC specimens were grasped.The test result shows many contents.The failure mode of NPC specimen is obviously different from that of the cast-in-situ one.The horizontal joint is the weak part with a concentrateddeformation.The upper precast shear wall remains in a good condition and the failure presented asshear failure is concentrated in the lower precast shear wall.The finite element analysis shows that:the increase of the connect reinforcements of NPC specimens can increase the contact area of concrete in a horizontal joint,reduce the shear stress,and effectively improve the mechanical behavior of NPC shear wall and enhance its carrying capacity and deformation capacity.