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提出一种颗粒调谐质量阻尼器,即通过摆绳将颗粒阻尼器悬挂于主体结构上,将目前广泛应用的调谐质量阻尼器与减震效能优越的颗粒阻尼器结合起来,以扩大减振频带,增加减振鲁棒性。基于一定的等效原则将多颗粒阻尼器等效为单颗粒阻尼器,提出一种近似的颗粒调谐质量阻尼器数值模拟方法,并介绍了系统参数的取值方法。进行了附加颗粒调谐质量阻尼器的单自由度结构实际地震输入下的振动台试验,通过对比试验结果与数值模拟结果,发现两者吻合较好,说明该简化方法可以较好地模拟颗粒调谐质量阻尼器的减震控制效果。
A particle tuned mass damper is proposed, in which a particle damper is suspended on a main structure through a swing rope, a tuned mass damper widely used today is combined with a particle damper with superior damping effect to expand the vibration damping band, Increase damping robustness. Based on a certain equivalence principle, the multi-particle damper is equivalent to a single particle damper, a numerical simulation method of the approximate particle-tuned mass damper is proposed, and the method of choosing the system parameters is introduced. The shaking table test is carried out under the actual seismic input of the single-degree-of-freedom structure with additional particle-tuned mass damper. By comparing the experimental results with the numerical results, it is found that the two agree well with each other, which shows that the simplified method can better simulate the particle tuning quality Damper damping control effect.