Application of control devices for seismic hazard mitigation has emerged as an attractive and viable proposition over the years. Buildings in close proximity are prone to pound to each other, under seismic excitation. It has been observed during past earthquakes that pounding in adjacent buildings has caused significant structural damage. To meet this challenge, application of control devices has been investigated by researchers, under various coupled building control strategies.The present study investigates the comparative performance of three proposed schemes of coupled building control involving Magnetorheological (MR) damper and elastomeric base isolation, named as, Semiactive, Hybrid 1 and Hybrid 2. The results of numerical study showed that Hybrid controls are more effective in controlling the response as compared to Semiactive control. Further, influence of device parameters on control performance has been investigated through a parametric study. Ó 2015 Production and hosting by Elsevier B.V. on behalf of Ain Shams University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
This study contains four models of RC Building of regular, mass irregular, stiffness irregular and soft storey. The peak responses of irregular building models are compared with Peak responses of regular building model. This building model contains ten stories modeled as shear type lumped mass system with single degrees of freedom at each floor level. The governing equation of motion is solved using Numark's method and is solved using coding in MATLAB software. From numerical results it is stated that peak responses of soft storey model gives better control over structural responses under various earthquakes except in some models.
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