Cyclic performance of precast concrete shear walls with a mortar-sleeve connection for longitudinal steel bars

To study the cyclic performance of precast concrete shear walls with a mortar-sleeve connection for longitudinal steel bars, a quasistatic test on shear wall specimens with flexure failure modes was carried out. The longitudinal steel bars in the precast concrete walls were connected with a steel sleeve using mortar. Test results indicated that the mortar-sleeve splicing effectively transferred the stresses on the vertical steel bars. The failure mode of the precast shear wall specimens had similar behaviors to that of the cast-in-place shear wall specimen, including the tensile yielding of the longitudinal steel bars and the crushing of the concrete in the compressive zone. The stiffness and energy dissipation capacity of the precast wall specimens were less than those of the cast-in-place wall specimen. The ultimate drift ratio of the precast wall specimens ranged from 1.69 to 2.08 %. The integrity of the precast shear walls with a vertical rough interface was better than that of the precast shear walls with a vertical step groove.