EMPIRICAL AERODYNAMIC DAMPING FUNCTION FOR TALL BUILDINGS

This paper describes an empirical aerodynamic damping function for tal l buildings and prisms. Empirical aerodynamic impedance functions (dam ping and stiffness) have been proposed. Their applicability has been e xamined using experimentally obtained aerodynamic damping values for p risms. It has been demonstrated that the proposed aerodynamic damping function can simulate aerodynamic damping of tall buildings quite well . Some physical conditions such as tip-amplitude, aspect ratio, shapes of cross section of the building and intensity of turbulence of the w ind have been related to the parameters of the aerodynamic damping fun ction.