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《工程(英文)》 >> 2017年 第3卷 第6期 doi: 10.1016/j.eng.2017.10.001

湍流效应对桁架式桥梁断面气动弹性性能影响的研究

a The University of Danang—University of Science and Technology, Danang, Vietnam
b Yokohama National University, Yokohama 240-8501, Japan

发布日期: 2017-12-30

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摘要

本文介绍了在不同湍流条件下通过随机系统识别(SSI)方法提取颤振导数(FD)的过程。研究旨在通过对节段模型风洞试验来研究湍流对悬索式大跨度桥梁的影响。针对不同的湍流特性,对桁架式桥梁断面进行了几项风洞试验,包括降低湍流强度和湍流尺度。研究包括湍流对模型动态响应的影响。利用系统识别技术提取FD,对风洞试验中的瞬态响应和抖振响应进行了分析,同时讨论了该方法存在的困难。利用时域SSI 同时从一自由度(1DOF)和二自由度(2DOF)系统提取所有的FD。最后,讨论了不同情况下的结果并得出结论。

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参考文献

[ 1 ] Scanlan RH, Lin WH. Effects of turbulence on bridge flutter derivatives. J Eng Mech Div 1978;104(4):719–33. 链接1

[ 2 ] Huston DR. The effects of upstream gusting on the aeroelastic behavior of long suspended-span bridges [dissertation]. Princeton: Princeton University; 1986. 链接1

[ 3 ] Haan FL, Kareem A. The effects of turbulence on the aerodynamics of oscillating prisms. In: Proceedings of the 12th international conference on wind engineering; 2007 Jul 1–6. Cairns, Australia. p. 1815–22.

[ 4 ] Yamada H, Miyata T, Ichikawa H. Measurement of aerodynamic coefficients by system identification methods. J Wind Eng Ind Aerod 1992;42(1–3):1255–63. 链接1

[ 5 ] Sarkar PP, Jones NP, Scanlan RH. Identification of aeroelastic parameters of flexible bridges. J Eng Mech 1994;120(8):1718–42. 链接1

[ 6 ] Gu M, Zhang RX, Xiang HF. Identification of flutter derivatives of bridge decks. J Wind Eng Ind Aerod 2000;84(2):151–62.

[ 7 ] Chowdhury AG, Sarkar PP. A new technique for identification of eighteen flutter derivatives using a three-degree-of-freedom section model. Eng Struct 2003;25(14):1763–72. 链接1

[ 8 ] Bartoli G, Righi M. Flutter mechanism for rectangular prisms in smooth and turbulent flow. J Wind Eng Ind Aerod 2006;94(5):275–91. 链接1

[ 9 ] Nikitas N, Macdonal JHG, Jakobsen JB. Identification of flutter derivatives from full-scale ambient vibration measurements of the Clifton Suspension Bridge. Wind Struct An Int J 2011;14(3):221–38. 链接1

[10] Bogunovic´ Jakobsen J, Hjorth-Hansen E. Determination of the aerodynamic derivatives by a system identification method. J Wind Eng Ind Aerod 1995;57 (2–3):295–305. 链接1

[11] Kirkegaard PH, Andersen P. State space identification of civil engineering structures from output measurements. In: Proceedings of the 15th international modal analysis conference; 1997 Feb 3–6; Orlando, FL, USA. Aalborg: Department of Building Technology and Structural Engineering, Aalborg University; 1997. p. 889–95. 链接1

[12] Katsuchi H, Yamada H. Study on turbulence partial simulation for wind-tunnel testing of bridge deck. In: Proceedings of the 13th international conference on wind engineering, 2011 Jul 10–15. Amsterdam, the Netherlands.

[13] Nakamura Y, Ozono S. The effects of turbulence on a separated and reattaching flow. J Fluid Mech 1987;178:477–90. 链接1

[14] Peeters B, Roeck GD. Reference-based stochastic subspace identification for output-only modal analysis. Mech Syst Signal Pr 1999;13(6):855–78. 链接1

[15] Juang JN, Pappa RS. An eigensystem realization algorithm (ERA) for modal parameter identification and model reduction. J Guid Control Dynam 1985;8 (5):620–7. 链接1

[16] Siringoringo DM, Fujino Y. System identification of suspension bridge from ambient vibration response. Eng Struct 2008;30(2):462–77. 链接1

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