Wind-Induced Self-Excited Loads on Bridges
Publication: Journal of Structural Engineering
Volume 131, Issue 12
Abstract
To investigate the frequency and amplitude effects on flutter derivatives, as well as the nonlinear characteristics of the aerodynamic forces on bridge sections, a vibration excitation system was designed and built for forced vibration experiments in the wind tunnel. Based on experimental results, it was shown that flutter derivatives are moderately dependent of the amplitude and frequency. The fast Fourier transform was also applied to investigate the nonlinearity of the aerodynamic forces. Results indicated that responses of thin-plate and streamlined sections were close to linear. However, the response of bluff sections contained relatively large higher order harmonics, even when the sectional model was driven by a small amplitude and nearly pure sinusoidal excitation.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgment
This research was supported by the National Natural Science Foundation of China under Grant Nos. NNSFC59778043 and NNSFC59895410.
References
Brownjohn, J. M. W., and Bogunovic-Jakobsen, J. (2001). “Strategies for aeroelastic parameter identification from bridge deck free vibration data.” J. Wind. Eng. Ind. Aerodyn., 89(13), 1113–1136.
Chen, Z. Q. (1994). “Three dimensional analysis and behavior investigation on the critical flutter state of bridges.” Proc. 1994 International Symposium on Cable-Stayed Bridges, Shanghai, China, 302–307.
Chen, X., and Kareem, A. (2002). “Advances in modeling of aerodynamic forces on bridge decks.” J. Eng. Mech., 128(11), 1193–1205.
Falco, M., Curami, A., and Zasso, A. (1992). “Nonlinear effects in sectional model aeroelastic parameter identification.” J. Wind. Eng. Ind. Aerodyn., 42, 1321–1332.
Holmes, J. D. (1995). “Methods of fluctuating pressure measurements in wind engineering.” Ninth Int. Conf. of Wind Engineering, New Delhi, India.
Iwamoto, M., and Fujino, Y. (1995). “Identification of flutter derivatives of bridge deck from free vibration data.” J. Wind. Eng. Ind. Aerodyn., 54–55(2), 55–63.
Li, Q. C. (1995). “Measuring flutter derivatives for bridge sectional models in water channel.” J. Eng. Mech., 121(1), 90–101.
Matsumoto, M., Shiraishi, N., Shirato, H., Shigetaka, K., and Niihara, Y. (1993). “Aerodynamic derivatives of coupled/hybrid flutter of fundamental structural sections.” J. Wind. Eng. Ind. Aerodyn., 49, 575–584.
Sabsevari, A., and Scanlan, R. H. (1968). “Aerodynamic instability of suspension bridges.” J. Eng. Mech. Div., 94, 489–519.
Sarkar, P. P., Jones, N. P., and Scanlan, R. H. (1994). “Identification of aeroelastic parameters of flexible bridges.” J. Eng. Mech., 120(8), 1718–1742.
Scanlan, R. H. (1997). “Amplitude and turbulence effects on bridge flutter derivatives.” J. Struct. Eng., 123(2), 232–236.
Scanlan, R. H., Jones, N. P., and Singh, L. (1997). “Inter-relations among flutter derivatives.” J. Wind. Eng. Ind. Aerodyn., 69–71, 829–837.
Scanlan, R. H., and Tomko, J. J. (1971). “Airfoil and bridge deck flutter derivatives.” J. Eng. Mech. Div., 97(6), 1717–1737.
Shinozuka, M., Yun, C. B., and Imai, H. (1982). “Identification of linear structural dynamic systems.” J. Eng. Mech. Div., 108(6), 1371–1390.
Singh, L., Jones, N. P., and Scanlan, R. H. (1996). “Identification of lateral flutter derivatives of bridge decks.” J. Wind. Eng. Ind. Aerodyn., 60(1–3), 81–89.
Theodorsen, T. (1935). “General theory of aerodynamic instability and the mechanism of flutter.” NACA Report No. 496.
Ukeguchi, N., et al. (1966). “An investigation of aeroelastic instability of suspension bridges.” Proc. Int. Symposium on Suspension Bridges, Lisbon, 273–284.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 12 • December 2005
Pages: 1783 - 1793
Copyright
© 2005 ASCE.
History
Received: May 9, 2001
Accepted: Dec 30, 2004
Published online: Dec 1, 2005
Published in print: Dec 2005
Notes
Note. Associate Editor: Kurtis R. Gurley
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.