Wind and Structures

  • 제17권1호
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  • Pages.21-41
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  • 2013
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Full-scale experiments of cantilever traffic signal structures

  • Cruzado, Hector J. (Department of Civil and Environmental Engineering, Polytechnic University of Puerto Rico) ;
  • Letchford, Chris (Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute)
  • 투고 : 2012.05.12
  • 심사 : 2012.10.03
  • 발행 : 2013.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

Wind-induced vibrations of mast arms of cantilever traffic signal structures can lead to fatigue failure. Two such structures were instrumented each with a sonic anemometer and a camera that records the motions of the tip of the arm. It was observed throughout this experiment that large amplitude vertical vibrations of mast arms with signals with backplates occur for the most part at low wind speed ranges, between 2 to 7 m/s, and as the wind speed increases the amplitude of the vertical vibrations decreases. The results of these experiments contradict the generally accepted belief that vortex shedding does not cause significant vibrations of mast arms that could lead to fatigue failure, which have been attributed to galloping in the past. Two damping devices were tested with mixed results.

키워드

참고문헌

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피인용 문헌

  1. Full-scale investigation of wind-induced vibrations of a mast-arm traffic signal structure vol.20, pp.3, 2015, https://doi.org/10.12989/was.2015.20.3.405
  2. Study of the aerodynamic damping of wing plates on traffic signal structures based on the 2D one-way FSI analysis vol.6, pp.4, 2013, https://doi.org/10.1080/24705314.2021.1902662