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

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).

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

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

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

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

Copyright © 2022 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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