Earthquake Performance of Hybrid Controls for Coupled Buildings with MR Dampers and Sliding Base Isolation

This study proposed two hybrid controls for response mitigation of adjacent buildings connected by dampers referred as coupled building of which base of taller building being isolated. These controls developed using Magnetorheological dampers in combination with Friction Pendulum System and Resilient Friction Base Isolator respectively named as, Hybrid control 1 and Hybrid control 2. Most effective hybrid control is investigated by comparing the responses obtained by hybrid controls with the responses of same coupled building with Semi-active control. Further, influence of device parameters on performance of hybrid control has been studied through parametric study. The result shows that Hybrid controls are more effective in reducing the responses compared to Semi-active control, however Hybrid control 2 perform more effective not only in response reduction but also in pounding effect.