The toroidal tuned liquid column damper (TTLCD) is a recently developed device, which extends the application scenarios of liquid column dampers to multidirectional vibration control. Based on the single-TTLCD, this article creatively designs a multilayer-TTLCD, composed of several cylinder shells and baffles, to improve the damping performance in multidirection. The real-time hybrid simulation (RTHS) technique is employed to experimentally investigate the control efficiency of the multilayer-TTLCD. It is confirmed that the multilayer configuration makes it possible to incorporate more oscillating liquid into the columns of the container without extra occupied floor area, and thus the liquid mass can be raised. Due to the increase of the liquid mass, the multilayer-TTLCD shows certain improvements on peak and root-mean-square (RMS) displacement mitigation over the single-TTLCD when suppressing one specific structural vibration mode. More importantly, it is found that the multilayer-TTLCD is beneficial in multimodal vibration damping and has potential to control multi-order modal responses of structures simultaneously with a wide frequency range.

环形调谐液柱阻尼器（TTLCD）是最近开发的设备，它将液柱阻尼器的应用场景扩展到多向振动控制。基于单TTLCD，本文创造性地设计了由多个气缸壳和挡板组成的多层TTLCD，以提高多方向的阻尼性能。实时混合仿真（RTHS）技术用于实验研究多层TTLCD的控制效率。证实了多层构造使得可以将更多的振荡液体引入到容器的柱中而没有额外的占用的地面面积，因此可以提高液体质量。由于液体质量的增加，当抑制一种特定的结构振动模式时，多层TTLCD在减轻峰值和均方根（RMS）位移方面比单TTLCD有所改善。更重要的是，发现多层-TTLCD在多模态减振方面是有益的，并且具有在较宽的频率范围内同时控制结构的多阶模态响应的潜力。