考虑涡旋效应的圆柱形TLD多维减震效果研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (6) : 126-130.

论文

考虑涡旋效应的圆柱形TLD多维减震效果研究

何浩祥，闫维明，陈彦江

作者信息 +

Multi-dimensional seismic control of cylindrical TLD considering vortex effect

HE Hao-xiang; YAN Wei-ming; CHEN Yan-jiang

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摘要

调谐液体阻尼器可以控制地震作用下的结构动力响应。研究了利用圆柱形调液阻尼器来控制结构在地震作用下的扭转耦联振动。采用薄膜法建立了包含脉冲动压力和对流动压力的调谐液体阻尼器液动压力模型。基于准均匀涡旋理论获得了考虑调谐液体的抗扭力模型。建立了考虑偏心扭转效应的结构控制运动方程。以一装有调谐液体阻尼器的偏心结构为算例，对结构在地震作用下的扭转耦联减震效果进行研究，并分析了调谐液体的脉冲动压力、对流动压力和涡旋抗扭力在减震中的作用。结果表明：合理布置的调液阻尼器能有效控制结构的平-扭耦联振动，不能忽略液体涡旋产生的扭转力。

Abstract

Tuned Liquid Damper (TLD) can reduce the dynamic amplitude of structure under earthquake. The seismic control of the horizontal and torsional response by cylindrical tuned liquid dampers is studied. The hydraulic pressure model of the cylindrical TLD including pulse pressure and convection pressure is established by membrane analog method. The torsional model of the cylindrical TLD is obtained based on the quasi-uniform vortex theorem. The equation of motion for the control system considering eccentric torsion effect is derived and the solving method is presented. A 10-story eccentric structure with TLD is analyzed to verify the control performance for the horizontal and torsional coupled system under earthquake. The effect pulse pressure, convection pressure and vortex torsional force is analyzed. The results show that the coupled response can be reduced effectively and the vortex torsional force by TLD can not be ignored.

导出引用

何浩祥;闫维明;陈彦江. 考虑涡旋效应的圆柱形TLD多维减震效果研究[J]. 振动与冲击, 2012, 31(6): 126-130

HE Hao-xiang;YAN Wei-ming;CHEN Yan-jiang. Multi-dimensional seismic control of cylindrical TLD considering vortex effect[J]. Journal of Vibration and Shock, 2012, 31(6): 126-130