Damping methods to mitigate wind-induced vibrations

This paper describes the design of passive dampers for guyed masts and steel chim- neys in conditions where the natural frequencies of the structure can not be determined accu- rately. In such conditions, an account should be taken of an offset in the frequency-tuning of the damping facilities. The paper shows that a traditional tuned mass damper (TMD) or a tuned liq- uid damper having narrow band control characteristic can be used as a broad damper by adopt- ing a sufficiently high mass in the device. Practical guidelines for the design of damping facili- ties are provided.