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| Title: | Model of tuned liquid column damper for suppressing torsional vibration of bridge decks | Other Title: | 抑制桥板扭转振动的调频液体阻尼器 | Authors: | Xue, SD Ko, JM Xu, YL |
Issue Date: | 2000 | Source: | 振動工程學報 (Journal of vibrarion engineering), 2000, v. 13, no. 4, p. 104-111 | Abstract: | 提出了一种抑制桥板扭转振动的调频液体阻尼器 (TLCD)模型 ,建立了 TLCD与桥板相互作用的运动方程。在简谐荷载作用下 ,分别在时域和频域内对 TLCD-桥板系统进行了动力分析。采用自适应的 Runge- Kutta- Fehlberg数值积分法求得系统的时程响应。为实现频域分析 ,对液体非线性运动方程进行了等效线性化 ,推导出 TLCD的等效阻尼比。通过算例表明 TLCD可有效抑制桥板扭转振动。最后 ,通过模型试验验证了理论模型的正确性。 A theoretical model of tuned liquid column damper (TLCD) for suppressing torsional vibration of bridge decks is developed in the paper. The TLCD-bridge deck interactive equations are formulated. Both time domain and frequency domain analyses are performed under harmonic excitation. The time-history responses of the system are obtained through an adaptive Runge-Kutta-Fehlberg numerical integration method. Equivalent linearization is employed to analyze the nonlinear system in a frequency domain, from which an equivalent damping ratio of the TLCD is derived. A numerical example is presented to illustrate the control effectiveness of the damper. Finally, the developed theoretical model is verified by a model test. It is concluded that TLCD can effectively reduce torsional vibration of bridge decks. |
Keywords: | Bridge deck Torsional vibration Vibration dampers Tuned liquid column damper Vibration control |
Publisher: | 中國學術期刊 (光盤版) 電子雜誌社 | Journal: | 振動工程學報 (Journal of vibrarion engineering) | ISSN: | 1004-4523 | Rights: | © 2000 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。 © 2000 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research purposes. |
| Appears in Collections: | Journal/Magazine Article |
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