Abstract： In order to meet the requirements of seismic performance and assembly performance of high-rise buildings, a hybrid coupled partially encased composite shear wall is proposed. Low cyclic loading test was conducted on a 3-story symmetrical double-leg with a scale of 2/3, by which the whole process of the hybrid coupled partially encased composite shear wall under cyclic loading was observed, and the hysteretic performance, bearing capacity, ductility, stiffness degradation, energy dissipation capacity and rotation capacity of coupling beam were analyzed. The results showed that the hysteretic curve of the hybrid coupled partially encased composite shear wall was full and stable, and there was no obvious pinch phenomenon. The average ductility coefficient of the forward and backward displacement was 3.65, which showed good seismic performance and cooperative working ability. The damage of shear steel coupling beam mainly concentrated in the web of coupling beam, and its ultimate plastic angle can reach 0.05 rad. The grid flange in the middle of wall limb could limit the development of shear crack at the bottom of wall limb. The main failure mode of shear wall was bending failure. The steel coupling beam and shear wall exhibited good ductility and energy dissipation capacity. The ultimate displacement angle between stories was 1/45, which exceeded the code limit under rare earthquakes. The steel coupling beam and the PEC shear wall both showed excellent ductility and energy dissipation capacity. According to the specimen designed with the coupling ratio of 45% when the whole structure yields, the development of plastic hinge conforms to the law of “strong-wall-limb and weakcoupling-beam”. The quasi-static analysis results by using the finite element software ABAQUS agree well with the test ones.
