A procedure for the evaluation of wind-induced torsional vibrations of tall buildings is proposed. The procedure is capable of accounting for the time-dependent eccentricity of the aerodynamic forces on the building surface with respect to the elastic center, and the distance between mass and elastic centers. A large number of wind tunnel pressure measurements on a building s model are used to simulate the aerodynamic loading. A time domain analysis of the dynamic response is performed that accounts for modal coupling. The use of the proposed procedure is demonstrated in numerical applications.
Journal of Wind Engineering and Industrial Aerodynamics