Design method for torsional tuned liquid column damper for eccentric frame structure
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摘要: 扭轉調諧液柱阻尼器（torsional tuned liquid column damper，TTLCD）是一種有效的扭轉振動控制裝置.本文對該阻尼器在偏心框架結構中的設計方法進行研究，針對不同的傾斜管道投影點和傾斜角，建立了三種形式的扭轉調諧液柱阻尼器在地震作用下的運動方程和控制力方程，給出TTLCD參數優化的具體公式，其方法為對比扭轉調諧液柱阻尼器-偏心結構和扭轉調頻質量阻尼器（torsional tuned mass damper，TTMD）-偏心結構，將兩控制系統轉化，利用Den Hartog或Ikeda給出的調頻質量阻尼器（tuned liquid mass damper，TMD）參數優化公式來實現TTLCD參數優化，最后給出TTLCD的設計流程.通過對一個四層偏心框架結構進行模擬，驗證了理論設計方法的合理性.Abstract: The torsional tuned liquid column damper (TTLCD) is a cost-effective passive device for reducing the torsional response of a plan-asymmetric building under wind or seismic load. In this paper, the equations of relative liquid motion in three kinds of TTLCDs, as well as the control forces with the reference point and various inclined angles of the upright columns were derived. The optimal TTLCD control parameters were given through transforming method of the TTLCD-structure equivalent to a TTMD-structure system using Den Hartog or Ikeda formulas. Finally, the TTLCD design method was evaluated and the TTLCD design process was described. The numerical results of a four-storey plan-asymmetric structure show that TTLCDs can effectively mitigate earthquake-induced coupled flexural torsional responses and that the proposed method is feasible.
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參考文獻
[3] Hochrainer M J, Adam C, Ziegler F. Application of tuned liquid column dampers for passive structural control//Proceedings of 7th International Congress on Sound and Vibration (ICSV7). Germany, 2000:3107 [8] Fu C, Ziegler F. Vibration prone multi-purpose buildings and towers effectively damped by tuned liquid column-gas dampers. AJCE (Asian J Civ Eng), 2009, 10(1):21 [9] Fu C. Application of torsional tuned liquid column gas damper for plan-asymmetric buildings. Struct Control Health Monit, 2011, 18(5):492 [10] Ziegler F. Mechanics of Solids and Fluids. 2nd Ed. New York:Springer Science&Business Media, 1995 [11] Fu C.Effective Damping of Vibrations of Plan-Asymmetric Buildings[Dissertation]. Vienna:Vienna University of Technology, 2008 [12] Den Hartog J P. Mechanical Vibrations. 4th Ed. New York:McGraw-Hill, 1956 [13] Ikeda T. Fundamentals of Piezoelectricity. New York:Oxford University Press, 1990 -
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