Aerodynamic Solutions to Minimize the Wind-Induced Dynamic Response of Tall Buildings

Abstract

Background to the generation of perceptible accelerations in tall buildings is described with the conclusion that these tend to be dominated by the cross-wind response to wake (vortex) excitation. A sensitivity analysis demonstrates the dependence on wind speed, damping, building massiveness and the cross-wind force spectrum. The remainder of the paper gives guidelines to the way in which the shape of configuration of a building may be directed to achieve reductions in the cross-wind force spectrum and hence reductions in acceleration response to meet occupancy comfort criteria.