Quasi-static test for double-wall precast concrete short-leg shear walls

Abstract:

To comprehensively evaluate the seismic behavior of double-wall precast concrete (DWPC) short-leg shear walls, quasi-static test of two full-scale DWPC short-leg shear walls and one normal cast-in-situ (CIS) short-leg shear wall were carried out. Systematic analyses were made on hysteretic curves, skeleton curves, displacement ductility, bearing capacity, stiffness degradation and energy dissipation capacity of specimens. The result shows that all specimens fail in bending. The detail improved DWPC short-leg shear walls can work together well. The continuous rectangular spiral stirrups in the range of U-shaped connection steel bars confine the concealed column concrete; also improve the stiffness and bearing capacity of DWPC short-leg shear walls. The displacement ductility, stiffness degradation and energy dissipation capacity of DWPC short-leg shear walls are close to those of CIS short-leg shear wall.