Seismic and wind response reduction of benchmark building using viscoelastic damper

Abstract

In the last three decades, there has been great deal of interest in the use of control systems to mitigate the effects of dynamic environmental hazards like earthquake and strong winds on the civil engineering structures. A variety of control systems have been considered for these applications that can be classified as passive, semi-active active or hybrid. In the present study, Viscoelastic damper as a structural protective system has be implemented to mitigate the damaging effects from the seismic and wind forces acting on the benchmark building. The dynamic behavior of the structural system supported on viscoelastic damper, the optimum parameters of the damper and effect of damper properties on the free vibration characteristics of the structure subjected to seismic and wind forces are investigated. The seismic force considered for study is El-Cento and wind force as simulated onsite wind velocity from the results obtained from the wind tunnel test. It is observed from the study that vicoelastic damper is very effective in reducing the reposes of benchmark building due to seismic and wind forces with respect to uncontrolled structure.