RESEARCH ON DEFORMATION CAPABILITY OF DOUBLE-PLATES SHEAR WALL WITH INFILL CONCRETE

To study the deformation capacity of double-plate shear wall with infill concrete (DPSW), the curvature ductility factor of DPSW is derived with the plane-section assumption. The displacement ductility coefficient of DPSW is obtained through the curvature ductility factor based on the equivalent plastic hinge model of cantilevered component. The reliability of the calculation model is verified against existing test results. With the calculation model, the influence of different parameters on the displacement ductility coefficient of DPSW is studied, including the axial compression ratio, confinement index of boundary columns, aspect ratio of shear wall, steel strength and concrete strength. The results show that the displacement deformation capacity of DPSW can be effectively improved by reducing the axial compression ratio, increasing the confinement index, using low-strength steel and setting up effective separators.