调液阻尼器对偏心结构扭转耦联振动控制的试验研究

Experimental study on torsionally coupled structural vibration control of eccentric buildings using tuned liquid dampers

通过振动台试验来验证调液阻尼器对偏心结构扭转耦联振动反应的减振效果及理论分析的正确性。设计了一个二层的单向偏心钢结构模型,在结构的顶层放置一个调液柱型阻尼器(TLCD)和一个环形调液阻尼器(CTLCD)并对其参数进行优化设计,在振动台上,分别对结构无控时的反应和设置调液阻尼器后的反应进行试验研究。通过分析结构模型在地震波作用下的加速度和位移响应,结果表明,调液阻尼器能有效抑制结构的在地震作用下的扭转耦联振动,而且同时设置TLCD和CTLCD的减振效果要好于单独采用TLCD或CTLCD时的减振效果。

The vibration control effects of liquid dampers on eccentric structures and the correctness of concerned theoretical analysis were experimentally studied through shaking table tests.A steel model of building with eccentricity only in one direction was designed.A tuned liquid column damper（TLCD） and a circular tuned liquid column damper（CTLCD） with optimized parameters were installed respectively on the top story of the experimental model.The building model with and without liquid dampers were tested on the shaking table.The acceleration and displacement responses of the structure excited by earthquake records were analyzed.The results show that the liquid dampers can effectively suppress the torsionally coupled responses of eccentric buildings and the control effects on the structure with both TLCD and CTLCD are better than on the one with single TLCD or CTLCD.