Wind-Induced Response of a Tall Building and Comparisons With Wind Tunnel Predictionsby A. Masciantonio, Univ of Western Ontario, London, Ont, Canada,
N. Isyumov, Univ of Western Ontario, London, Ont, Canada,
N. R. Petersen, Univ of Western Ontario, London, Ont, Canada,
Abstract: This paper describes the measured wind-induced response of a tall office tower and comparisons made with wind tunnel studies of the building. The use of an innovative structural system and high strength materials resulted in a relatively light building and there was an early commitment to equip the tower with a tuned mass damper (TMD) in order to control its wind-induced dynamic motions and to assure the comfort of its occupants. The wind tunnel model study included analytical and experimental evaluations of the effectiveness of a TMD and provided an initial sizing of the damper required to maintain wind-induced horizontal accelerations at acceptable levels. The objectives of this paper are to examine the wind-induced responses of the building during two severe wind conditions and to compare these with behaviour which would have been anticipated from the findings of the aeroelastic wind tunnel model study carried out at the design stage.
Subject Headings: Wind forces | Wind tunnel | Comparative studies | Tunnels | Model analysis | Building design | Dynamic structural analysis | Damping
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