Wind and Structures

  • 제20권3호
  • /
  • Pages.405-422
  • /
  • 2015
  • /
  • 1226-6116(pISSN)
  • /
  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Full-scale investigation of wind-induced vibrations of a mast-arm traffic signal structure

  • Riedman, Michelle (Simpson Gumpertz and Heger Inc.) ;
  • Sinh, Hung Nguyen (Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute) ;
  • Letchford, Christopher (Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute) ;
  • O'Rourke, Michael (Department of Civil and Environmental Engineering, Rensselaer Polytechnic Institute)
  • 투고 : 2014.06.14
  • 심사 : 2015.01.21
  • 발행 : 2015.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

In previous model- and full-scale studies, high-amplitude vertical vibrations of mast-arm traffic signal structures have been shown to be due to vortex shedding, a phenomenon in which alternatingly shed, low-pressure vortices induce oscillating forces onto the mast-arm causing a cross-wind response. When the frequency of vortices being shed from the mast-arm corresponds to the natural frequency of the structure, a resonant condition is created causing long-lasting, high-amplitude vibrations which may lead to the fatigue failure of these structures. Turbulence in the approach flow is known to affect the cohesiveness of vortex shedding. Results from this full-scale investigation indicate that the surrounding terrain conditions, which affect the turbulence intensity of the wind, greatly influence the likelihood of occurrence of long-lasting, high-amplitude vibrations and also impact whether reduced service life due to fatigue is likely to be of concern.

키워드

과제정보

연구 과제 주관 기관 : NYSDOT

참고문헌

  1. AASHTO (2009), Standard Specifications for Structural Supports to Highway Signs, Luminaires, and Traffic Signals. American Association of State Highway and Transportation Officials.
  2. ASCE (2010), Minimum Design Loads for Buildings and Other Structures. Reston, VA: Amer. Soc. of Civil Eng.
  3. Chen, G., Barker, M., Dharani, L.R. and Ramsay, C. (2003), Signal mast arm fatigue failure investigation, Missouri Dept. of Transportation, Tech. Rep..
  4. Chen, G., Wu, J., Yu, J., Dharani, L.R. and Baker, M. (2001), "Fatigue assessment of traffic signal mast arms based on field test data under natural wind gusts", Transportation Research Rec.: J. of the Transportation Research Board, 1770, 188-194. https://doi.org/10.3141/1770-24
  5. Chopra, A K. (2007), Dynamics of Structures. Upper Saddle River, NJ: Pearson Prentice Hall.
  6. Cruzado, H.J. and Letchford, C.W. (2013), "Full-scale experiments of cantilever traffic signal structures", Wind Struct., 17(1), 21-41. https://doi.org/10.12989/was.2013.17.1.021
  7. Hamilton, H.R., Riggs III, G.S. and Puckett, J.A. (2000), "Increased damping in cantilevered traffic signal structures", J. Struct. Eng., 126(4), 530-537. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:4(530)
  8. Holmes, J.D. (2007), Wind Loading of Structures, 2nd Ed., London, Taylor and Francis.
  9. Hua, J. and Zuo, D. (2012), "Wind-induced vibration of mast arm traffic signal support structure of various configurations", Proceedings of the 3rd Amer. Assoc. for Wind Eng. Workshop, Hyannis, MA.
  10. Johns, K.W. and Dexter, R.J. (1998), "The development of fatigue design load ranges for cantilevered sign and signal support structures", J. Wind Eng. Ind. Aerod, 77-78, 315-326. https://doi.org/10.1016/S0167-6105(98)00152-4
  11. Letchford, C.W., Cruzado, H. and Zuo, D. (2008), Full-scale controlled tests of wind loads on traffic signal structures, Texas Dept. of Transportation, Austin, TX, Tech. Rep.
  12. National Oceanic and Atmospheric Administration (NOAA) (1998), Department of Defense, Federal Aviation Administration, United States Navy, Automated Surface Observing System (ASOS) User's Guide .
  13. NYSDOT (2010), Determining remaining fatigue life of in-situ mast-arm traffic signal structures, Request for Proposals SPR No. C-10-07.
  14. The Integrated Surface Database (ISD), National Climatic Data Center (NCDC), U.S. Department of Commerce http://www.ncdc.noaa.gov/oa/climate/isd/index.php
  15. T. P. Products (2013), "Traffic signal standards "TR" Series".
  16. Wikipedia (2005), "Vort2.gif", http://en.wikipedia.org/wiki/Vortex_shedding.

피인용 문헌

  1. In-situ measurement of railway-traffic induced vibrations nearby the liquid-storage tank vol.12, pp.5, 2015, https://doi.org/10.12989/eas.2017.12.5.583
  2. Comparison of Two-Dimensional and Three- Dimensional Responses for Vortex-Induced Vibrations of a Rectangular Prism vol.10, pp.22, 2015, https://doi.org/10.3390/app10227996
  3. Study of the aerodynamic damping of wing plates on traffic signal structures based on the 2D one-way FSI analysis vol.6, pp.4, 2015, https://doi.org/10.1080/24705314.2021.1902662