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Numerical Investigation on the Wind-Excited Dynamic Response of Span-Wire Traffic Signal System

Received: 4 April 2022     Accepted: 27 April 2022     Published: 10 May 2022
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Abstract

The performance of span-wire mounted traffic signal systems can be significantly affected by extreme wind events. Multiple mechanical failure cases of this type of traffic signal systems occurred in Florida in the past hurricane seasons, resulting in unsafe traffic conditions. For better analysis the force on structure, this paper presents the results of the numerical investigation on the wind-induced dynamic response of the span-wire traffic signal system. The numerical simulation is conducted for a full-scale test, and the geometry is generated based on the 12 inch diameter manufacturer design. Wind speeds has been chosen as the major variable, ranged from 30 to 75 mph, in this numerical simulation. The current numerical simulation results have been compared with the pervious experimental results conducted in Florida International University Wall of Wind facility, and the comparison shows a great agreement. Some major findings, for instance, inclination and RMS acceleration of signal, the tension force on wire, along with the flow filed have been detailed discussed in this paper. This paper found that the wire tension increase with the increase of wind speed. Periodic eddy circulations were found and discussed in low wind speed (30-45 mph). The traffic signals are subject to large inclinations, motions, and external force loads under high upcoming wind speeds (75 mph).

Published in Fluid Mechanics (Volume 8, Issue 1)
DOI 10.11648/j.fm.20220801.12
Page(s) 16-26
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Span Wire Mounted Traffic Signal, Extreme Wind Events, Dynamic Response, CFD

References
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[2] ANSYS FLUENT User Guide Release 19.2, 2018.
[3] Azzi, Z., Matus, M., Elawady, A., Zisis, I., Irwin, P., & Gan Chowdhury, A. (2020). Aeroelastic Testing of Span-Wire Traffic Signal Systems. Frontiers in Built Environment, 6, 111.
[4] Azzi, Z., Matus, M., Elawady, A., Zisis, I., & Irwin, P. (2018, August). Large-scale Aeroelastic Testing to Investigate the Performance of Span-Wire Traffic Signals. In Proc. 5th AAWE Workshop, Miami, FL.
[5] Cook, R. A., Masters, F., Rigdon, J., & Tillander, T. (2012). Evaluation of Dual Cable Signal Support Systems with Pivotal Hanger Assemblies.
[6] Hamilton III, H. R., Riggs, G. S., & Puckett, J. A. (2000). Increased damping in cantilevered traffic signal structures. Journal of Structural Engineering, 126 (4), 530-537.
[7] Holmes, J. D. (2015). Wind Loading of Structures, 3rd Edn. Boca Raton, FL: CRC Press, Taylor & Francis Group.
[8] Irwin, P., Zisis, I., Berlanga, B., Hajra, B., & Chowdhury, A. (2016). Wind testing of span wire traffic signal systems. Resilient Infrastructure, London, NDM-519, 1-10.
[9] Matus, M. A. (2018). Experimental Investigation of Wind-Induced Response of Span-Wire Traffic Signal Systems.
[10] McDonald, J. R., Mehta, K. C., Oler, W., & Pulipaka, N. (1995). WIND LOAD EFFECTS ON SIGNS, LUMINAIRES, AND TRAFFIC SIGNAL STRUCTURES. FINAL REPORT (No. Res Rept 1303-F).
[11] Phan, L., Hu, B., & Lin, C. X. (2019). An evaluation of turbulence and tile models at server rack level for data centers. Building and Environment, 155, 421-435.
[12] Sandoval, P., Cornejo, P., & Tinapp, F. (2015). Evaluating the longitudinal stability of an UAV using a CFD-6DOF model. Aerospace Science and Technology, 43, 463-470.
[13] San, B., Zhao, Y., & Qiu, Y. (2019). Numerical simulation and optimization study of surface pressure and flow field around a triangular prism behind a porous fence. Environmental Fluid Mechanics, 19 (4), 969-987.
[14] Shen, H., He, Y., & Hsu, S. A. (2019). Estimating downwind turbulence intensity using wind and wave measurements during hurricanes. Applied Ocean Research, 88, 71-75.
[15] Versteeg, H. K., Malalasekera, W., 2007. An Introduction to Computational Fluid Dynamics, Pearson Education Limited, England, UK, ISBN 978-0-13- 127498-3.
[16] Wilcox, D., 1993. Turbulence modeling for CFD. La Cañada Flintridge; DCW Industries Inc.; 1993.
[17] Zhou, Y., & Kareem, A. (2002). Definition of wind profiles in ASCE 7. Journal of structural Engineering, 128 (8), 1082-1086.
[18] Zisis, I., Irwin, P., & Chowdhury, A. (2019). Assessment of the Performance of Vehicular Traffic Signal Assemblies during Hurricane Force Winds (No. BDV29 TWO 977-27).
[19] Zisis, I., Irwin, P., Chowdhury, A. G., & Azizinamini, A. (2019). Development of a Test Method for Assessing the Performance of Vehicular Traffic Signal Assemblies during Hurricane Force Winds (No. BDV29 977-20). Florida. Department of Transportation. Research Center.
[20] Zisis, I., Berlanga, B., Irwin, P., Chowdhury, A. G. (2016). Assessing the performance of vehicular traffic signal assemblies during hurricane force winds. 1st International Conference on Natural Hazards & Infrastructure, Greece.
Cite This Article
  • APA Style

    Zeda Yin, Manuel Matus, Ioannis Zisis, Arturo Segundo Leon. (2022). Numerical Investigation on the Wind-Excited Dynamic Response of Span-Wire Traffic Signal System. Fluid Mechanics, 8(1), 16-26. https://doi.org/10.11648/j.fm.20220801.12

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    ACS Style

    Zeda Yin; Manuel Matus; Ioannis Zisis; Arturo Segundo Leon. Numerical Investigation on the Wind-Excited Dynamic Response of Span-Wire Traffic Signal System. Fluid Mech. 2022, 8(1), 16-26. doi: 10.11648/j.fm.20220801.12

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    AMA Style

    Zeda Yin, Manuel Matus, Ioannis Zisis, Arturo Segundo Leon. Numerical Investigation on the Wind-Excited Dynamic Response of Span-Wire Traffic Signal System. Fluid Mech. 2022;8(1):16-26. doi: 10.11648/j.fm.20220801.12

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  • @article{10.11648/j.fm.20220801.12,
      author = {Zeda Yin and Manuel Matus and Ioannis Zisis and Arturo Segundo Leon},
      title = {Numerical Investigation on the Wind-Excited Dynamic Response of Span-Wire Traffic Signal System},
      journal = {Fluid Mechanics},
      volume = {8},
      number = {1},
      pages = {16-26},
      doi = {10.11648/j.fm.20220801.12},
      url = {https://doi.org/10.11648/j.fm.20220801.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.fm.20220801.12},
      abstract = {The performance of span-wire mounted traffic signal systems can be significantly affected by extreme wind events. Multiple mechanical failure cases of this type of traffic signal systems occurred in Florida in the past hurricane seasons, resulting in unsafe traffic conditions. For better analysis the force on structure, this paper presents the results of the numerical investigation on the wind-induced dynamic response of the span-wire traffic signal system. The numerical simulation is conducted for a full-scale test, and the geometry is generated based on the 12 inch diameter manufacturer design. Wind speeds has been chosen as the major variable, ranged from 30 to 75 mph, in this numerical simulation. The current numerical simulation results have been compared with the pervious experimental results conducted in Florida International University Wall of Wind facility, and the comparison shows a great agreement. Some major findings, for instance, inclination and RMS acceleration of signal, the tension force on wire, along with the flow filed have been detailed discussed in this paper. This paper found that the wire tension increase with the increase of wind speed. Periodic eddy circulations were found and discussed in low wind speed (30-45 mph). The traffic signals are subject to large inclinations, motions, and external force loads under high upcoming wind speeds (75 mph).},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Numerical Investigation on the Wind-Excited Dynamic Response of Span-Wire Traffic Signal System
    AU  - Zeda Yin
    AU  - Manuel Matus
    AU  - Ioannis Zisis
    AU  - Arturo Segundo Leon
    Y1  - 2022/05/10
    PY  - 2022
    N1  - https://doi.org/10.11648/j.fm.20220801.12
    DO  - 10.11648/j.fm.20220801.12
    T2  - Fluid Mechanics
    JF  - Fluid Mechanics
    JO  - Fluid Mechanics
    SP  - 16
    EP  - 26
    PB  - Science Publishing Group
    SN  - 2575-1816
    UR  - https://doi.org/10.11648/j.fm.20220801.12
    AB  - The performance of span-wire mounted traffic signal systems can be significantly affected by extreme wind events. Multiple mechanical failure cases of this type of traffic signal systems occurred in Florida in the past hurricane seasons, resulting in unsafe traffic conditions. For better analysis the force on structure, this paper presents the results of the numerical investigation on the wind-induced dynamic response of the span-wire traffic signal system. The numerical simulation is conducted for a full-scale test, and the geometry is generated based on the 12 inch diameter manufacturer design. Wind speeds has been chosen as the major variable, ranged from 30 to 75 mph, in this numerical simulation. The current numerical simulation results have been compared with the pervious experimental results conducted in Florida International University Wall of Wind facility, and the comparison shows a great agreement. Some major findings, for instance, inclination and RMS acceleration of signal, the tension force on wire, along with the flow filed have been detailed discussed in this paper. This paper found that the wire tension increase with the increase of wind speed. Periodic eddy circulations were found and discussed in low wind speed (30-45 mph). The traffic signals are subject to large inclinations, motions, and external force loads under high upcoming wind speeds (75 mph).
    VL  - 8
    IS  - 1
    ER  - 

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Author Information
  • Department of Civil and Environmental Engineering, Florida International University, Miami, United States

  • Department of Civil and Environmental Engineering, Florida International University, Miami, United States

  • Department of Civil and Environmental Engineering, Florida International University, Miami, United States

  • Department of Civil and Environmental Engineering, Florida International University, Miami, United States

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