Experimental and numerical study on a precast partially connected buckling-restrained arc-opening steel plate shear wall

Abstract

With the goal to decrease the detrimental bending moment effect of the steel plate shear wall (SPSW) on the frame, the frame's material waste and section requirements, and facilitate the arrangement of building equipment and pipelines, three one-third scale novel SPSW were designed and tested, including two four-sided partially connected buckling-restrained SPSW (PPBSW, PPBASW), and one non-buckling-restrained SPSW (PPASW). The damage pattern, hysteresis curve, stiffness degradation, energy dissipation capacity, and ductility were explored under consideration of arc openings and equipped with buckling-restrained concrete slabs. The outcomes shown that: The buckling-restrained concrete slab efficiently inhibited the low-order buckling of SPSW and enhanced the seismic performance of the steel shear wall. Compared to specimen PPASW, an increment in the bearing capacity for specimens PPBASW and PPBSW, was 55.4% and 61.3%, respectively. The corresponding initial stiffness increased by 41% and 43% due to the existence of the covered concrete slabs. There was a harmless difference in energy dissipation, secant stiffness, and bearing capacity for specimens PPBSW and PPBASW, indicating that the material's utilization and contribution had been improved. Moreover, finite element models (FEM) were established based on ABAQUS, showing a good fit between the test curves and simulation results, an error within 6.5%. Furthermore, a series of design parameters analysis for specimen PPBASW were carried out based on the established FEM. Following that, based on the test and simulation results, theoretical models for calculating the shear-bearing capacities of specimens PPASW, PPBAW, and PPBASW were developed, with the yield-bearing capacity and ultimate bearing capacities of PPBASW having maximum calculation errors of no more than 7.5% and 3.6%, respectively.