Abstract
Steel chimney is a kind of high-rise structure, which is usually built in areas with large wind loads. And the possibility of large deformation or even damage caused by wind vibration exists. Suspended tuned mass damper (STMD) has been proved to be an effective vibration control device, which can effectively reduce the dynamic response of high-rise structures caused by wind and ensure it meets the requirements of deformation and comfort. A STMD is designed in a seaside thermodynamic boiler chimney to reduce the wind-induced response of the structure. The AR method for simulating the time-course load of along-wind is firstly introduced, with Davenport wind speed spectrum used in fitting. It can be concluded that the fluctuating wind obtained by the AR method meets the requirements in statistical sense. Then the simulation of cross-wind is proposed according to the range of Reynolds number, and the coupling of along-wind and cross-wind is taken into consider. The effect of STMD on vibration reduction is proved by analysis and test on the spot by comparing the acceleration amplitude of the top of the chimney with or without the STMD.KeywordsSteel chimneySuspended tuned mass damper (STMD)Wind vibration controlFluctuating wind simulation
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