SEMI-ACTIVE TLCDS USING MAGNETO- RHEOLOGICAL FLUIDS FOR VIBRATION MITIGATION OF TALL BUILDINGS

机译：磁流变流体用于高层建筑减震的半主动TLCD

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A semi-active tuned liquid column damper using magneto-rheological fluid (MR-TLCD) is proposed for wind-induced vibration mitigation of high-rise buildings. The magneto-rheological (MR) fluids can reversibly change from a free-flowing, linear viscous fluid to a semi-solid with controllable yield strength in milliseconds when exposed to a magnetic field. They are used as damping fluids to devise semi-active MR-TLCDs with alterable fluid viscosity. The sharply alterable fluid viscosity results in adjustable and controllable damping forces that achieve real-time structural vibration control. By applying a magnetic field to the MR fluid at the bottom part of a U-shaped tube, the damping effects of an MR-TLCD can be changed continuously through altering the magnetic field strength. Making use of the equivalent linearization technique, a stochastic response analysis for tall buildings incorporating semi-active MR-TLCDs subjected to random wind excitation is formulated. A 50-storey tall building using MR-TLCDs for wind-induced vibration mitigation is considered as a case study. The control effectiveness using MR-TLCDs is evaluated by comparing the RMS acceleration and deflection of the structure with an MR-TLCD damping system and with a conventional TLCD system.

机译：提出了一种使用磁流变液（MR-TLCD）的半主动调谐液柱阻尼器，用于减轻高层建筑的风致振动。当暴露于磁场中时，磁流变（MR）流体可以从自由流动的线性粘性流体可逆地变为具有可控屈服强度的半固体，其屈服强度可以在毫秒内变化。它们用作阻尼液来设计具有可变粘度的半主动MR-TLCD。急剧变化的流体粘度会产生可调节和可控制的阻尼力，从而实现实时的结构振动控制。通过在U形管底部的MR流体上施加磁场，可以通过改变磁场强度来连续改变MR-TLCD的阻尼效果。利用等效的线性化技术，对装有半主动MR-TLCD的高层建筑的随机建筑物进行了随机响应分析。案例研究使用MR-TLCD的50层高的高层建筑来减轻风致振动。通过比较MR-TLCD阻尼系统和传统TLCD系统的RMS加速度和挠度，评估使用MR-TLCD的控制有效性。

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来源
《International Conference on Advances in Building Technology Vol.1, Dec 4-6, 2002, Hong Kong, China》|2002年|p.537-544|共8页
会议地点 Hong Kong(CN);Hong Kong(CN)
作者
J. Y. Wang; Y. Q. Ni; J. M. Ko; B. F. Spencer;
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作者单位

Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Horn, Kowloon, Hong Kong;

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会议组织
原文格式 PDF
正文语种 eng
中图分类建筑科学;
关键词
tuned liquid column damper (TLCD); magneto-rheological (MR) fluid; tall building; wind-induced excitation; random response analysis; vibration mitigation;

机译：调谐液柱阻尼器（TLCD）;磁流变（MR）流体;高层建筑;风致激励;随机响应分析;减振;

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专利

1. Magneto-rheological tuned liquid column dampers (MR-TLCDs) for vibration mitigation of tall buildings: modelling and analysis of open-loop control [J] . J.Y. Wang, Y.Q. Ni, J.M. Ko, Computers & Structures . 2005,第25a26期

机译：磁流变调谐液柱阻尼器（MR-TLCD）用于减轻高层建筑的振动：开环控制的建模和分析
2. Stochastic optimal control of wind-excited tall buildings using semi-active MR-TLCDs [J] . Y.Q. Ni, Z.G. Ying, J.Y. Wang, Probabilistic engineering mechanics . 2004,第3期

机译：使用半主动MR-TLCD的风激励高层建筑的随机最优控制
3. Mitigation of wind response of a tall building using semi-active tuned mass dampers [J] . Joowon Kang Hyun-Su Kim and Dong-Guen Lee The Structural Design of Tall and Special Buildings . 2011,第5期

机译：使用半主动调谐质量阻尼器减轻高层建筑的风响应
4. SEMI-ACTIVE TLCDS USING MAGNETO- RHEOLOGICAL FLUIDS FOR VIBRATION MITIGATION OF TALL BUILDINGS [C] . J. Y. Wang, Y. Q. Ni, J. M. Ko, International conference on advances in building technology . 2002

机译：半活跃的TLCDS使用磁流变流体进行高层建筑的振动减缓
5. A study of semi-active vibration control using a magneto-rheological fluid actuator in a flexible structure. [D] . Lee, Jin Kyoo. 1998

机译：在柔性结构中使用磁流变流体致动器进行半主动振动控制的研究。
6. A semi-active H∞ control strategy with application to the vibration suppression of nonlinear high-rise building under earthquake excitations [O] . Guiyun Yan, Fuquan Chen, Yingxiong Wu -1

机译：半主动H∞控制策略在地震激励下非线性高层建筑减振中的应用
7. Semi-active TLCDs using magneto-rheological fluids for vibration mitigation of tall buildings [O] . Wang JY, Ni YQ, Ko JM, 2002

机译：使用磁流变液的半主动式TLCD减轻高层建筑的振动

SEMI-ACTIVE TLCDS USING MAGNETO- RHEOLOGICAL FLUIDS FOR VIBRATION MITIGATION OF TALL BUILDINGS

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