Seismic Response Reduction of a Building Using

Copyright © 2014 Hyun-Su Kim. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In this study, the adaptability of a semi-active top-story isolation system with an MR damper for reduction of seismic responses of tall buildings has been investigated. To this end, a 20-story building structure was selected as an example. Low damping elastomeric bearings and an MR damper were used to compose a smart top-story isolation system. Artificial earthquakes generated based on design spectrum were used for structural analyses. A fuzzy logic controller (FLC) was used to control an MR damper and the FLC was optimized by multi-objective genetic algorithms (MOGA). Numerical simulations show that a smart top-story isolation system can effectively reduce both structural responses and isolation story drifts of the building structure compared to a passive system