Buffeting response of a suspension bridge (frequency domain)

Versione 5.3.1 (776 KB) da 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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Aggiornato 20 gen 2022

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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

Cita come

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

Visualizza più stili

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.

Visualizza più stili

Compatibilità della release di MATLAB

Creato con R2019b

Compatibile con R2014b e release successive

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Ispirato da: Calculation of the modal parameters of a suspension bridge

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Le versioni che utilizzano il ramo predefinito di GitHub non possono essere scaricate

Versione	Pubblicato	Note della release
5.3.1	20 gen 2022	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.3.1	Scarica
5.3	12 giu 2020	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.3	Scarica
5.2	12 giu 2020	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.2	Scarica
5.1	28 apr 2020	See release notes for this release on GitHub: https://github.com/ECheynet/dynaRespFD/releases/tag/v5.1	Scarica
5.0	28 apr 2020	Added Github repository
4.21	12 gen 2020	Correction of a typo in the expression of Liepmann's approximation to Sears' function	Scarica
4.20	10 gen 2020	Code recomputed with R2019b	Scarica
4.2	10 lug 2019	Examples have been updated for the sake of clarity	Scarica
4.1	3 mar 2019	Added the project website	Scarica
4.0.0.0	2 nov 2016	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	Scarica
3.3.0.0	19 ago 2016	Description updated and simplified code	Scarica
3.2.0.0	3 giu 2016	Correction of a bug in the torsional response	Scarica
3.1.0.0	22 mag 2016	- summary updated	Scarica
3.0.0.0	22 mag 2016	Description, new examples	Scarica
2.1.0.0	17 lug 2015	- typo -	Scarica
2.0.0.0	17 lug 2015	- - 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	Scarica
1.0.0.0	4 lug 2015	- typo - description	Scarica

Per visualizzare o segnalare problemi su questo componente aggiuntivo di GitHub, visita GitHub Repository.

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} }