Wind and Structures

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An evaluation of iced bridge hanger vibrations through wind tunnel testing and quasi-steady theory

  • Gjelstrup, H. (COWI A/S) ;
  • Georgakis, C.T. (Department of Civil Engineering, Technical University of Denmark) ;
  • Larsen, A. (COWI A/S)
  • Received : 2010.11.05
  • Accepted : 2011.10.14
  • Published : 2012.09.25
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Abstract

Bridge hanger vibrations have been reported under icy conditions. In this paper, the results from a series of static and dynamic wind tunnel tests on a circular cylinder representing a bridge hanger with simulated thin ice accretions are presented. The experiments focus on ice accretions produced for wind perpendicular to the cylinder at velocities below 30 m/s and for temperatures between $-5^{\circ}C$ and $-1^{\circ}C$. Aerodynamic drag, lift and moment coefficients are obtained from the static tests, whilst mean and fluctuating responses are obtained from the dynamic tests. The influence of varying surface roughness is also examined. The static force coefficients are used to predict parameter regions where aerodynamic instability of the iced bridge hanger might be expected to occur, through use of an adapted theoretical 3-DOF quasi-steady galloping instability model, which accounts for sectional axial rotation. A comparison between the 3-DOF model and the instabilities found through two degree-of-freedom (2-DOF) dynamic tests is presented. It is shown that, although there is good agreement between the instabilities found through use of the quasi-steady theory and the dynamic tests, discrepancies exist-indicating the possible inability of quasi-steady theory to fully predict these vibrational instabilities.

Keywords

References

  1. AAllen, H.J. and Vincenti, W.G. (1944), Wall interference in a two-dimensional-flow wind tunnel, with consideration of the effect of compressibility, NACA, Rept.782.
  2. Anderson, D.N., Hentschel, D.B. and Ruff, G.A. (1998), Measurement and correlation of ice accretion roughness, AIAA-98-0486.
  3. Chabart, O. and Lilien, J.L. (1998), "Galloping of electrical lines in wind tunnel facilities", J. Wind Eng. Ind. Aerod., 74-76, 967-976. https://doi.org/10.1016/S0167-6105(98)00088-9
  4. Dalle, B. and Admirat, P. (2010), Wet snow accretion on overhead lines with French report of experience, Cold Regions Science and Technology. in press, corrected proof.
  5. Dalton, C. (1971), "Allen and Vincenti blockage corrections in a wind tunnel", AIAA J., 9(9), 1864-.1865. https://doi.org/10.2514/3.6435
  6. ESDU (1986), Mean forces, pressures and flow field velocities for circular cylindrical structures: Single cylinder with two-dimensional flow, ESDU Item 80025, ESDU International, London, U.K.
  7. Fo chi, W., Yue fan, D., Cheng rong, L., Yu zhen, L. and Yu qian, Z. (2009), "Icing simulation system for transmission line", High Voltage Eng., 35(9), 2313-2316.
  8. Gjelstrup, H. and Georgakis, C. (2009), "Aerodynamic Instability of a cylinder with thin ice accretion", Proceedings of the ISCD 2009, Paris.
  9. Gjelstrup, H. and Georgakis, C. (2011), "A quasi-steady 3 degree-of-freedom model for the determination of the onset of bluff body galloping instability", J. Fluid. Struct., 27(7), 1021-1034. https://doi.org/10.1016/j.jfluidstructs.2011.04.006
  10. Gjelstrup, H., Georgakis, C. and Larsen, A. (2007), "A preliminary investigation of the hanger vibrations on the Great Belt East Bridge", Proceedings of the 7th International Symposium on Cable Dynamics, Vienna (Austria).
  11. Gjelstrup, H., Larsen, A., Georgakis, C. and Koss, H. (2008), "A new general 3DOF quasi-steady aerodynamic instability model", Proceedings of the BBAA VI International Colloquium on: Bluff Bodies Aerodynamics & Applications, Milan, Italy, July, 20-24
  12. Gurung, C.B., Yamaguchi, H. and Yukino, T. (2002), "Identification of large amplitude wind-induced vibration of ice-accreted transmission lines based on field observed data", Eng. Struct., 24(2), 179-188. https://doi.org/10.1016/S0141-0296(01)00089-X
  13. Hack, R.K. (1981), A wind tunnel investigation of four conductor models with simulated ice deposits. National Aerospace laboratory NLR, The Netherlands, 6. July, NLR TR 81076 L
  14. Hansman, R.J., Breuer, E.S., Hazan, D., Reehorst, A. and Vargas, M. (1993), Close-up analysis of aircraft ice accretion, 31st Aerospace Sciences Meeting & Exhibit.(93-0029).
  15. Jamaleddine, A., McClure, G., Rousselet, J. and Beauchemin, R. (1993), "Simulation of ice-shedding on electrical transmission lines using adina", Comput. Struct., 47(4-5), 523-536. https://doi.org/10.1016/0045-7949(93)90339-F
  16. Koss, H., Gjelstrup, H. and Georgakis, C.T. (2012), "Experimental study of ice accretion on circular cylinders at moderate low temperatures", J. Wind Eng. Ind. Aerod., 104-106, 540-546. https://doi.org/10.1016/j.jweia.2012.03.024
  17. Kudzys, A. (2006), "Safety of power transmission line structures under wind and ice storms", Eng. Struct., 28(5), 682-689. https://doi.org/10.1016/j.engstruct.2005.09.026
  18. Lozowski, E.P., Stallabrass, J.R. and Hearty, P.F. (1983a), "The icing of an unheated, nonrotating cylinder. I. A simulation model ", J. Appl. Meteorol. Clim., 22(12), 2053-2062. https://doi.org/10.1175/1520-0450(1983)022<2053:TIOAUN>2.0.CO;2
  19. Lozowski, E.P., Stallabrass, J.R. and Hearty, P.F. (1983b), "The icing of an unheated, nonrotating cylinder. II. Icing wind tunnel experiments", J. Appl. Meteorol. Clim., 22(12), 2063-2074. https://doi.org/10.1175/1520-0450(1983)022<2063:TIOAUN>2.0.CO;2
  20. McComber, P. and Paradis, A. (1995), "Simulation of the galloping vibration of a 2-dimensional iced cable shape", T. Can. Soc. Mech. Eng., 9(2), 75-92.
  21. Nigol, O. and Buchan, P.G. (1981), "Conductor galloping .1. Den Hartog mechanism", IEEE T. Power Syst., 100(2), 699-707.
  22. Nigol, O. and Clarke, G.J. (1974), "Conductor galloping and control based on torsional mechanism", IEEE T. Power Syst., 93(6), 1729-1729.
  23. Nigol, O.B. and P. G. (1981), "Conductor galloping .2. Torsional mechanism", IEEE T. Power Syst., 100(2), 708-720.
  24. Phuc, P.V. (2005), "A wind tunnel study on unstady forces of ice accreted transmission lines", Proceedings of the BBAA V 5th International Colloquium on Bluff Body Aerodynamics and Applications, Ottawa, Canada, July 11-16, 2005.
  25. Shimizu, M. (2005), "A wind tunnel study on aerodynamic characteristics of ice accreted transmission lines", Proceedings of the BBAA V, 5th International Colloquium on Bluff Body Aerodynamics and Applications, Ottawa, Canada, July 11-16, 2005.
  26. Wang, F., Li, C., Lv, Y., Lv, F. and Du, Y. (2010), "Ice accretion on superhydrophobic aluminum surfaces under low-temperature conditions", Cold Reg. Sci.Technol., 62(1), 29-33. https://doi.org/10.1016/j.coldregions.2010.02.005

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