ラチス構造物に取り付けた付加振動体の強風下での制振性能に関する基礎的研究

概要

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It is well known that the passive type damper like a Tuned Mass Damper(TMD) is useful for the vibration control of a tall structure under strong winds. In general a damper device is not exposed to wind. However installation of an additional vibrator to a lattice structure like a transmission tower requires the information of damping performance of the vibrator subjected to gusty winds. The paper reports the damping performance of the additional vibrator under several conditions of the structural and gust property. Our parametric studies indicate that the performance of vibration control under gusty winds is adjustable by the optimized frequency ratio and damping ratio of the additional vibrator too. And it was found that the performance is affected by both the vibrator's size and the wind property.
2009-07-15