Study on control of wind induced vibration of Changzhou E120 Theme Park Landscape Tower with MTMD

Multiple tuned mass dampers were used to control wind induced vibration of a landscape tower, through the analysis of the parameter to study the general law of control result with parameter changes, and provide analysis method for similar projects which control wind induced vibration with MTMD. At first, considering both time and spatial correlation, stochastic fluctuating wind speed processes were generated by the autoregressive-type simulation method. The finite element analysis model was established with the program of SPA2000 and the wind induced vibration was calculated, the numerical results agree well with the wind tunnel test. Then considering the first model shape of the structure, the analysis parameters of the MTMD were determined and the analysis model of the MTMD was established, and then the wind induced vibration of the structure under the control of the MTMD was calculated, the results show that the damping effect is obvious if the structure with MTMD. At last the relationship between the vibration reduction ratio of the structure with MTMD and mass ratio, TMD's quantity, damping ratio and frequency width is studied. Numerical results indicate that the MTMD exist the optimum parameter values, in which the mass ratio, damping ratio and frequency width have a consistent damping effect on the displacement and acceleration, and the acceleration of the vibration damping effect is obvious.