EFFECTS OF STRUCTURAL DAMPING AND ECCENTRICITY ON WIND RESPONSES OF HIGHRISE BUILDINGS

This paper investigates the effects of structural damping and eccentri city on the wind responses of high-rise buildings. Wind tunnel experim ents were conducted on a 6-mass-point aeroelastic model with a side sp an ratio of 2 and an aspect ratio of 5. The experimental results are c ompared with analytical results by modal spectrum analysis using the w ind force obtained from a dynamic balance over the applicable range of the analytical method without the motion-induced wind force. The aero dynamic damping from the autocorrelation function of the response acce leration for the tertiary mode, where torsional vibration is dominant, is also obtained. (C) 1998 Elsevier Science Ltd. All rights reserved.