Seismic response control of smart base-isolated benchmark building using hybrid control strategy (viscous fluid damper with MR damper)

Abstract

Building structures are more susceptible to the ground motion and caused high level of damage to the lives and properties. Hence, the safety parameters and the serviceability have to be maintained by reducing the induced seismic effect on the building structure. The benchmark problem on smart base-isolated benchmark building developed evaluation criteria to compare among the control strategies along with the supplementary devices. A hybrid control strategy consists of semi-active MR damper and passive viscous fluid damper (VFD) which have been proposed in this study for seismic response control of smart base-isolated benchmark building. A set of numerical simulation has been performed in the MATLAB for the specified seven historical earthquakes to investigate the effectiveness of the hybrid control systems for the benchmark problem. The evaluation criteria of the benchmark building of the two control strategies, (a) semi-active system composed of MR damper with Bouc–Wen model and (b) hybrid system composed of MR damper with VFD. From this study, it has been perceived that hybrid control system consisting of MR damper with nonlinear VFD is more robust than the other considered control system.