摘要
通常采用数值模拟和小比例尺试验的方法研究调谐液体阻尼器(TLD)对结构的减振控制效果。由于TLD依靠水的晃动来提供减振力,精确的数值模型不易建立;另外,振动台模型试验又只能进行小比例尺试验,难以真实反映原型结构性能。为了解决这个问题,提出基于等效力控制方法的振动台子结构试验方法,以真实揭示TLD减振控制结构的抗震性能。通过试验研究得到如下结论:(1)惯性试件的振动台子结构试验结果与精确解吻合很好,表明基于等效力控制方法振动台子结构试验具有很好的精度;(2)TLD减振控制三层钢框架系统的振动台全结构和子结构试验结果吻合较好,进一步证明了基于等效力控制方法振动台子结构试验具有很好的精度。
Tuned Liquid Damper （TLD） is one kind of passive vibration mitigation system. The performance of structures with TLD are normally investigated by numerical simulations and shaking table tests. However, the accurate numerical model of sloshing water for TLD is difficult to determined, and the traditional shaking table test method is only suitable for small-scale model experiments so as to difficult to truly reflect the performance of prototype structures. Therefore, this paper proposes a shaking table substructure testing method based on equivalent force control method for investigating the control performance of TLD. It is shown from shaking table substructure tests of pure mass specimen that the proposed method is effective. The effectiveness of the proposed shaking table substructure testing method is also verified by comparing the results from shaking table test and shaking table sub- structure test of three-storied structure with TLD. It is shown from the comparison results that the proposed shaking table substructure testing method is feasible and has good performance in term of accuracy.
出处
《地震工程与工程振动》
CSCD
北大核心
2015年第5期113-119,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51308159
91315301-9)
教育部博士点基金项目(20132302120078)
