Vibration control of seismic forces using viscous dampers and buckling restrained braces in irregular composite buildings

Abstract This study addresses the effectiveness of buckling restrained braces (BRBs) and viscous dampers (VDs) in dissipating seismic energy increasing performance irregular composite buildings during earthquake events. The response steel-concrete moment resisting frames 15 stories with concrete filled steel tubes (CFST) as columns beams was examined without protection devices by employing ETABS software using spectrum method per IS 1893:2016 for zone V. Regular plans characterised structures. plan include C L-shaped buildings. BRBs VDs were installed on all two configurations: corner bays centre throughout height. results showed excellent dissipation capabilities. contributions 5%-8% more than and, therefore, efficient. Centre placement most efficient regular reducing time-period 60%, maximum story displacement 57%, base shear 37%, interstory drift ratio 70%. Corner 55%-60%, 63%-65%, 30% 13%, 78%-80%, respectively, making an choice midrise