Magneto-rheological tuned liquid column dampers (MR-TLCDs) for vibration mitigation of tall buildings: modelling and analysis of open-loop control
- 作者：J.Y. Wang ; Y.Q. Ni ; J.M. Ko and B.F. Spencer ; Jr.
- 关键词：High-rise building ; Wind excitation ; Vibration mitigation ; Magneto-rheological tuned liquid column damper (MR-TLCD) ; Smart fluid ; Random vibration
- 刊名：Computers and Structures
- 出版年：2005
- 期刊代码：39_00457949
- 类别：cp
- 出版时间：2005
- 卷：83
- 期：25-26
- 页码：2023-2034
- 文件大小：916 K
摘要
A novel semi-active tuned liquid column damper using magneto-rheological fluid (MR-TLCD) is devised for wind-induced vibration mitigation of tall building structures. It combines the benefits of magneto-rheological smart materials and tuned liquid column dampers. A mathematical model of the devised MR-TLCD is first established using the parallel-plate theory, and then a method for analyzing stochastic dynamic response of building structures incorporating semi-active MR-TLCDs subjected to random wind excitation is developed by means of the equivalent linearization technique. The open-loop control effectiveness of MR-TLCDs in mitigating wind-induced structural response is studied by referring to a 50-storey high-rise residential building equipped with MR-TLCDs. The analysis results show that MR-TLCDs with optimal parameters are capable of achieving much better vibration mitigation capability than conventional TLCD system.