SEISMIC PERFORMANCE OF PREFABRICATED HIGH STRENGTH STEEL PLATE SHEAR WALL WITH ANNULAR DAMPERS

Steel plate shear walls have been widely adopted in high-rise buildings and high intensity areas due to their good seismic performance. In order to avoid hysteretic curve pinching and buckling of prefabricated steel plate shear wall, a prefabricated high-strength steel plate shear wall with annular dampers is proposed. Both finite element analysis and experiments under low cyclic loading were carried out by changing the ratio of height to thickness and the steel grade. The failure mode, hysteresis curves, skeleton curves, stiffness degenerations, energy dissipation and ductility were analyzed. The results show that the annular dampers of the inner panel and the boundary connecting plate belts experience yield failure under low cyclic loading, while the other components remain intact. The hysteresis curves are full, and the displacement ductility coefficients are within the range from 5.7 to 8.7. Thus the prefabricated high-strength steel plate shear wall exhibits satisfying seismic performance. The proposed design formulas are simple with clear concept, which agree well with the finite element calculation and test results.