Parameter study of tunned liquid damper (TLD) on wind-induced vibration control of high-rise buildings

Based on the deep-water wave theory, a rectangular deep-water tunned liquid damper (TLD) model is established, and the expression of the control force of the TLD on the structure is derived. In order to study the variation of acceleration reduction on the top floor of the high-rise building with water depth ratio, liquid damping ratio, mass ratio, frequency ratio and TLD installation position, the interaction between the TLD and the structure is regarded as the internal action in the same system. The wind-induced accelerations on the top floor of the structure-TLD system were obtained by the Wilson-θ method. The results show that the acceleration reduction decreases with the increasing of water depth ratio. As the liquid damping ratio increases, the acceleration reduction first increases then decreases slightly. The acceleration reduction increases with the increasing of the mass ratio. When the water depth ratio of the TLD is 0.125, the mass ratio is 1%, the frequency ratio is 1, the liquid damping ratio is 0.05 and the TLD is installed on the top floor, the wind-induced vibration response of the structure can be effectively controlled. Finally, the empirical formulas of the acceleration reduction ratio are proposed for various parameters of TLD. This study aims to provide a reference for wind-resistant design of similar tall buildings in strong wind region.