Measuring Flutter Derivatives for Bridge Sectional Models in Water Channel
Publication: Journal of Engineering Mechanics
Volume 121, Issue 1
Abstract
Experimental results of flutter derivatives for sectional models of long-span bridges are presented. The tests were carried out in the Water Channel Laboratory of the Center for Applied Stochastics Research of Florida Atlantic University, which has an 8-m-long test section and a maximum flow speed of 0.5 m/s. The experiments were conducted in the forced-oscillation mode. Specifically, each model is forced to execute a sinusoidal motion, either torsional or vertical, one at a time. In each test, both lift force and torsional moment are measured to obtain the noncoupled flutter derivatives as well as the coupled ones. The advantages of using water as the fluid medium, instead of air, are described. The flutter derivatives obtained in the water-channel tests are then compared with some published data obtained in the wind-tunnel tests using the free-vibration mode. The comparison shows that the water-channel data and the respective wind-tunnel data share the same trends. Finally, the measured flutter derivatives are converted to the corresponding impulse response functions required for the stochastic stability analysis in the time domain.
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References
1.
Bucher, C. G., and Lin, Y. K.(1988). “Stochastic stability of bridges considering coupled modes.”J. Engrg. Mech., ASCE, 114(12), 2055–2071.
2.
Li, Q. C., and Lin, Y. K.(1993). “Stabilizing and destabilizing effects of wind turbulence on multimode motion of a long-span bridge.”Proc., 7th U.S. Nat. Wind Engrg. Conf., Wind Engineering Research Council, 1, 403–412.
3.
Li, Q. C., and Lin, Y. K.(1995). “New stochastic theory for bridge stability in turbulent flow.”J. Engrg. Mech., ASCE, 121(1), 102–116.
4.
Poulsen, N. K., Damsgaard, A., and Reinhold, T. A.(1992). “Determination of flutter derivatives for the Great Belt Bridge.”J. Wind Engrg. and Indust. Aerodyn., 41, 153–164.
5.
Sabzevari, A., and Scanlan, R. H.(1968). “Aerodynamic instability of suspension bridges.”J. Engrg. Mech. Div., ASCE, 94(2), 489–519.
6.
Sarkar, P. P. (1993). “New identification methods applied to the response of flexible bridges to wind,” PhD thesis, Johns Hopkins University, Baltimore, Md.
7.
Sarkar, P. P., Jones, N. P., and Scanlan, R. H.(1992). “System identification for estimation of flutter derivatives.”J. Wind Engrg. and Indust. Aerodyn., 42, 1243–1254.
8.
Scanlan, R. H., Béliveau, J. G., and Budlong, K. S.(1974). “Indicial aerodynamic functions for bridge decks.”J. Engrg. Mech. Div., ASCE, 100(4), 657–672.
9.
Scanlan, R. H., and Sabzevari, A.(1969). “Experimental aerodynamic coefficients in the analytical study of suspension bridge flutter.”J. Mech. Engrg. Sci., 11(3), 234–242.
10.
Scanlan, R. H., and Tomko, J. J.(1971). “Airfoil and bridge flutter derivatives.”J. Engrg. Mech. Div., ASCE, 97(6), 1717–1737.
11.
Su, T. C., and Li, Q. C.(1993). “Water channel modeling for wind engineering applications.”Proc., 7th U.S. Nat. Wind Engrg. Conf., Wind Engineering Research Council, 2, 773–782.
12.
Ukeguchi, N., Sakata, H., and Nishitani, H. (1986). “An investigation of aeroelastic instability of suspension bridges.”Proc., Intl. Symp. on Suspension Bridges, Lisbon, Portugal, 273–284.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 121 • Issue 1 • January 1995
Pages: 90 - 101
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Jan 1, 1995
Published in print: Jan 1995
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