Experimental Study on Seismic Properties of Assembled Integrated Double Shear Walls

In order to study the seismic performances of assembled integrated double shear walls in Prefabricated Prefinished Volumetric Construcction (PPVC), four assembled integrated double shear walls and one cast-in-place shear wall were designed to be used for low-cycle reciprocating loading experiments. The effects of grouting material strength, diameters of connecting rebars and axial compression ratios on its failure pattern, bearing capacity, ductility, stiffness,energy consumption were studied. The test results showed that grouting materials, wireropes and connecting rebars could connect the prefabricated shear walls into a whole. The failure form of the assembled integrated double shear walls was similar to that of the cast-in-place wall. X-shaped cross cracks were formed and the lower part of the wall was crushed. In the same condition, the ultimate loads of the assembled integrated double shear walls were basically equal to that of the cast-in-place walls. Increasing axial compression ratios could significantly improve the stiffness of the assembled walls. Finally, the failure mechanism of the assembled walls and the strain of bottom rebars were analyzed.