Study of Passive Deck-Flaps Flutter Control System on Full Bridge Model. II: Results
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VIEW THE ORIGINAL ARTICLEPublication: Journal of Engineering Mechanics
Volume 128, Issue 3
Abstract
Using the analytical format set forth in the first of these two companion papers, numerical simulations of a passive aerodynamic control method for suppression of the wind-induced instabilities of a very long span bridge are presented in this paper. At first, the aerodynamic stability of the uncontrolled system is discussed using a sectional model and full bridge model, respectively. Next, the efficiency of the proposed asymmetric and symmetric cable connection control systems is studied. Both systems offer similar maximum improvements in critical wind speed. The asymmetric cable connection system turns out to be very sensitive to horizontal motions, which strongly degrade its effectiveness. On the contrary, the symmetric cable connection system is not sensitive to horizontal motions, but its efficiency is limited by divergence.
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References
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Chen, X., Kareem, A., and Matsumoto, M. (1999). “Coupled flutter and buffeting response of bridges.” Proc., 10th Int. Conf. on Wind Eng., A. Larsen, G. L. Larose, and F. M. Livesey, eds., A. A. Balkema, Rotterdam, Holland, 845–850.
Fujino, Y., Iwamoto, M., Ito, M., and Hikami, Y.(1992). “Wind tunnel experiments using 3D models and response prediction for a long-span suspension bridge.” J. Wind. Eng. Ind. Aerodyn., 42(1–3), 1333–1344.
Omenzetter, P., Wilde, K., and Fujino, Y.(2000a). “Suppression of wind-induced instabilities of a long-span bridge by a passive deck-flaps control system. I: Formulation.” J. Wind. Eng. Ind. Aerodyn., 87(1), 61–79.
Omenzetter, P., Wilde, K., and Fujino, Y.(2000b). “Suppression of wind-induced instabilities of a long-span bridge by a passive deck-flaps control system. II: Numerical simulations.” J. Wind. Eng. Ind. Aerodyn., 87(1), 81–91.
Wilde, K., and Fujino, Y. (1999). “Study on bridge flutter suppression by control surfaces on FEM model of control system.” Proc., 10th Int. Conf. on Wind Eng., A. Larsen, G. L. Larose, and F. M. Livesey, eds., A. A. Balkema, Rotterdam, Holland, 1063–1068.
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Published In
Journal of Engineering Mechanics
Volume 128 • Issue 3 • March 2002
Pages: 280 - 286
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Aug 1, 2000
Accepted: Jul 20, 2001
Published online: Mar 1, 2002
Published in print: Mar 2002
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