Hysteretic model and resilient application of corrugated shear panel dampers

Abstract

In this study, corrugated steel shear panels were applied to a metallic shear panel damper (SPD) to improve its seismic performance. The seismic performance tests and analysis of eight specimens were performed for different corrugated steel panel directions, arrangement forms, and material strengths. The results showed that the metallic corrugated shear panel dampers (CSPDs) exhibited remarkable plastic deformation and plump hysteretic loops. The direction of corrugated shear panels had the most significant influence on the energy dissipation performance, and the results of the horizontal corrugated direction exhibited the great performance. Then, the improved Bouc–Wen model was used to predict the hysteretic behaviour of the CSPDs, and the universal global optimization algorithm was applied to identify the model parameters. Additionally, a typical 12 storey benchmark steel frame structure was retrofitted with the CSPDs to verify the application effect of the CSPDs on structural vibration control. And the seismic fragility analysis was implemented to quantify the exceeding probabilities of different damaged states for the original structure and the damper improved structure. Compared with the benchmark frame, the performance level of the damper improvement frame in operation, immediate occupancy, life safety, and collapse prevention increased by 1.51%, 11.50%, 45.59%, and 81.19%, respectively, under the maximum considered earthquake (MCE) level. The analyses showed that the CSPDs could significantly improve the seismic resilience performance of the structure.