Buffeting response of a suspension bridge (frequency domain)

バージョン 5.3.1 (776 KB) 作成者: E. Cheynet

The dynamic response of a suspension bridge to wind turbulence is computed in the frequency domain.

https://windengineeringuis.github.io

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5.0

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更新 2022/1/20

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Buffeting response of a suspension bridge (frequency domain)

The dynamic response of a suspension bridge to wind turbulence is computed in the frequency domain.

The estimation of the displacement response of a large civil engineering structure to wind turbulence is based on the buffeting theory [1, 2, 5]. Ref. [5] contains the theoretical background I have used for the function dynaRespFD3. In the present script, the structure in question is a suspension bridge modelled using the theory of continuous beams [3]. The buffeting response is computed in the frequency domain using the quasi-steady theory. Modal coupling was assumed negligible, which is generally well verified for most of the wind velocities recorded in full scale [4]. The present script is a simplified version of the one used in [6].

The present script computes the lateral, vertical and torsional displacement response. A multi-modes approach is used. Some knowledge in the field of random vibration analysis and wind loading on structures are advised for proper use of this script.

The present submission contains

• dynaRespFD.m : Function that calculates the displacement response spectrum of the bridge

• A function VonKarmanSpectrum.m to generate the power spectral density of the velocity fluctuations based on von Karman model.

• Two example files Example_1.m and Example_2.m

• Two .mat files bridgeModalProperties.mat and DynamicDispl.mat that are used in the 2 examples.

Any question, comment or suggestion to improve the submission is welcomed.

References

[1] Davenport, A.G., The response of slender line-like structures to a gusty wind, Proceedings of the Institution of Civil Engineers, Vol. 23, 1962, pp. 389 – 408.

[2] Scanlan, R. H. (1978). The action of flexible bridges under wind, II: Buffeting theory. Journal of Sound and vibration, 60(2), 201-211.

[3] http://www.mathworks.com/matlabcentral/fileexchange/51815-suspension-bridge--eigen-frequency-and-mode-shapes-benchmark-solutions

[4] Thorbek, L. T., & Hansen, S. O. (1998). Coupled buffeting response of suspension bridges. Journal of Wind Engineering and Industrial Aerodynamics, 74, 839-847.

[5] Hjorth-Hansen, E. (1993). Fluctuating drag, lift and overturning moment for a line-like structure predicted (primarily) from static, mean loads. Wind Engineering, Lecture note no, 2.

[6] Cheynet, E., Jakobsen, J. B., & Snæbjörnsson, J. (2016). Buffeting response of a suspension bridge in complex terrain. Engineering Structures, 128, 474-487. http://dx.doi.org/10.1016/j.engstruct.2016.09.060

引用

Cheynet, E. Buffeting Response of a Suspension Bridge in the Frequency Domain. Zenodo, 2020, doi:10.5281/ZENODO.3891547.

その他のスタイルを見る

Cheynet, Etienne, et al. “Buffeting Response of a Suspension Bridge in Complex Terrain.” Engineering Structures, vol. 128, Elsevier BV, Dec. 2016, pp. 474–87, doi:10.1016/j.engstruct.2016.09.060.

その他のスタイルを見る

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バージョン	公開済み	リリースノート
5.3.1	2022/1/20	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.3.1	ダウンロード
5.3	2020/6/12	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.3	ダウンロード
5.2	2020/6/12	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.2	ダウンロード
5.1	2020/4/28	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.1	ダウンロード
5.0	2020/4/28	Added Github repository
4.21	2020/1/12	Correction of a typo in the expression of Liepmann's approximation to Sears' function	ダウンロード
4.20	2020/1/10	Code recomputed with R2019b	ダウンロード
4.2	2019/7/10	Examples have been updated for the sake of clarity	ダウンロード
4.1	2019/3/3	Added the project website	ダウンロード
4.0.0.0	2016/11/2	Largest update since the first submission of this script. The function dynaResp is renamed dynaResp3 and is considerably simplified (see Example 1) Description updated -Description updated -File uploaded properly	ダウンロード
3.3.0.0	2016/8/19	Description updated and simplified code	ダウンロード
3.2.0.0	2016/6/3	Correction of a bug in the torsional response	ダウンロード
3.1.0.0	2016/5/22	- summary updated	ダウンロード
3.0.0.0	2016/5/22	Description, new examples	ダウンロード
2.1.0.0	2015/7/17	- typo -	ダウンロード
2.0.0.0	2015/7/17	- - IMPORTANT update: computing error have been corrected - Reduction of the number of files recorded to carry out the simulation (nested functions are used instead) - 2 examples files are included	ダウンロード
1.0.0.0	2015/7/4	- typo - description	ダウンロード

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MLA	Cheynet, E. Buffeting Response of a Suspension Bridge in the Frequency Domain. Zenodo, 2020, doi:10.5281/ZENODO.3891547.
APA	Cheynet, E. (2020). Buffeting response of a suspension bridge in the frequency domain. Zenodo. Retrieved from https://zenodo.org/record/3891547
BibTeX	@misc{https://doi.org/10.5281/zenodo.3891547, doi = {10.5281/ZENODO.3891547}, url = {https://zenodo.org/record/3891547}, author = {Cheynet, E.}, title = {Buffeting response of a suspension bridge in the frequency domain}, publisher = {Zenodo}, year = {2020}, copyright = {Open Access} }

MLA	Cheynet, Etienne, et al. “Buffeting Response of a Suspension Bridge in Complex Terrain.” Engineering Structures, vol. 128, Elsevier BV, Dec. 2016, pp. 474–87, doi:10.1016/j.engstruct.2016.09.060.
APA	Cheynet, E., Jakobsen, J. B., & Snæbjörnsson, J. (2016). Buffeting response of a suspension bridge in complex terrain. Engineering Structures, 128, 474–487. Elsevier BV. Retrieved from https://doi.org/10.1016%2Fj.engstruct.2016.09.060
BibTeX	@article{Cheynet_2016, doi = {10.1016/j.engstruct.2016.09.060}, url = {https://doi.org/10.1016%2Fj.engstruct.2016.09.060}, year = 2016, month = {dec}, publisher = {Elsevier {BV}}, volume = {128}, pages = {474--487}, author = {Etienne Cheynet and Jasna Bogunovi{\'{c}} Jakobsen and J{\'{o}}nas Sn{\ae}björnsson}, title = {Buffeting response of a suspension bridge in complex terrain}, journal = {Engineering Structures} }