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Abstract ▼ AI-Helper

In this research, a numerical study was performed for a practical application of an Active Mass Damper(AMD) to wind-induced vibration control of the 39-story Technomart 21 building. Through measurement of wind-induced responses by typhoon and wind tunnel test, it was determined that serviceability ...

In this research, a numerical study was performed for a practical application of an Active Mass Damper(AMD) to wind-induced vibration control of the 39-story Technomart 21 building. Through measurement of wind-induced responses by typhoon and wind tunnel test, it was determined that serviceability of the Technomart should be improved. As the first step, available space for the damper installation and the effect of the additional mass on safety of the existing structures were investigated. And an analytical study was performed by applying the velocity feedback, LQR, and LQG as linear control methods and Bang-bang as nonlinear ones. As a result, bang-bang was verified to have the best control performance reducing peak acceleration 11.83cm/s2 to 4.19cm/s2 and the level of vibration perception 90% to under 50%. And maximum stroke of the AMD required by each control algorithm was satisfied with an acceptable level. Also, a new algorithm for self-positioning of the AMD to zero displacement point was proposed for the AMD to function safely within the stroke limit and it was verified that the AMD would operate safely within the limited stroke due to the addition of this signal.

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