Effects of tuned mass damper on correlation of wind-induced responses and combination coefficients of equivalent static wind loads of high-rise buildings

Tuned mass dampers (TMDs) are employed to control the wind-induced responses of tall buildings. In the meantime, TMD may have an impact on the correlation of wind-induced responses and combination coefficients of equivalent static wind loads (ESWLs). First, the mass matrix and stiffness matrix were extracted in this paper in accordance with the structural analysis model of two high-rise buildings, and on that basis, the wind-induced vibration responses analysis model with and without TMD was established. Second, the synchronous multipoint wind tunnel test to measure the pressure was performed for two high-rise buildings, and the time history of wind-induced vibration responses with and without TMD was studied. Finally, the impact of TMD on the correlation of wind-induced responses and combination coefficients of ESWLs was discussed. The results of two examples suggest that after the installation of TMD, the increase of ρ _xy was 2.1% to 35.0% and ρ _yz was 2.8% to 45.6% at all wind directions for Building 1, and the increase of ρ _xy was 3.9% to 17.1% and ρ _yz was 6.8% to 38.3% for Building 2. The combination coefficients of ESWLs of two buildings were 3% to 6% larger than that of the original structure. The conclusion of this paper can be referenced by the wind resistant design of high-rise buildings with TMD.