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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 86
Edited by: B.H.V. Topping
Paper 194

Aeroelasticity of Slender Bridges Equipped with Wind-Screen Barriers

A. Tesar

Institute of Construction and Architecture, Slovak Academy of Sciences, Bratislava, Slovak Republic

Full Bibliographic Reference for this paper
A. Tesar, "Aeroelasticity of Slender Bridges Equipped with Wind-Screen Barriers", in B.H.V. Topping, (Editor), "Proceedings of the Eleventh International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 194, 2007. doi:10.4203/ccp.86.194
Keywords: aeroelasticity, equations of motion, frequency domain, laminar and turbulent air flows, slender bridges, time response, transient dynamics, wave equation.

The assessment of the ultimate aeroelastic response [1] of slender bridges equipped with wind-screen barriers is treated in the present paper. The analysis of aeroelastic structural response is based on transient dynamics [2]. The wave approach is used for the modeling of aeroelastic forcing [3]. Numerical and experimental results are submitted in order to demonstrate the efficiency of the procedures suggested.

A special model set-up was adopted for the experimental treatment and verifications of the theoretical approach suggested. The aeroelastic response of a slender bridge model was studied in the wind tunnel in order to obtain the image of the ultimate aeroelastic behaviour initiated by laminar and turbulent air flow forcing. The massive model wood base plate was connected with a dynamic flexure transducer, being the main source of flexibility of the model set-up. In the model flow-exposed part the secondary flexibility effects appeared. The model was equipped with exchangeable wind-screen barriers.

Theoretical and numerical as well as experimental verification results are presented in the present paper. Some results concerning the aeroelastic response of slender bridges equipped with wind-screen barriers adopting some new approaches for solution of the problem are also presented.

Tesar A., "Aeroelastic Response of Transporter Shell Bridges in Smooth Air Flow", The Norwegian Institute of Technology, Tapir, Trondheim, 1978.
Tesar A., Fillo L., "Transfer Matrix Method", Kluwer Academic Publishers, Dordrecht/Boston/London, 1988.
Tesar A., Svolik J., "Wave distribution in fibre members subjected to kinematic forcing", Int. Journal for Communication in Numerical Mechanics, 9, 1993. doi:10.1002/cnm.1640090303

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