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Numerical simulation of wind loading on roadside noise mitigation structures

  • TSE, K.T. (Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology) ;
  • Yang, Yi (Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology) ;
  • Shum, K.M. (The CLP Power Wind/Wave Tunnel Facility, The Hong Kong University of Science and Technology) ;
  • Xie, Zhuangning (State Key Laboratory of Sub-tropical Building Science, South China University of Technology)
  • 투고 : 2012.04.26
  • 심사 : 2013.02.28
  • 발행 : 2013.09.25

초록

Numerical research on four typical configurations of noise mitigation structures and their characteristics of wind loads are reported in this paper. The turbulence model as well the model parameters, the modeling of the equilibrium atmospheric boundary layer, the mesh discretization etc., were carefully considered in the numerical model to improve the numerical accuracy. Also a numerical validation of one configuration with the wind tunnel test data was made. Through detailed analyses of the wind load characteristics with the inclined part and the wind incidence angle, it was found that the addition of an inclined part to a noise mitigation structure at-grade would affect the mean nett pressure coefficients on the vertical part, and that the extent of this effect depends on the length of the inclined part itself. The magnitudes of the mean nett pressure coefficients for both the vertical part and the inclined part of noise mitigation structure at-grade tended to increase with length of inclined part. Finally, a comparison with the wind load code British/European Standard BS EN 1991-1-4:2005 was made and the envelope of the mean nett pressure coefficients of the noise mitigation structures was given for design purposes. The current research should be helpful to improve current wind codes by providing more reasonable wind pressure coefficients for different configurations of noise mitigation structures.

키워드

참고문헌

  1. Baker, C.J. (2001), "Unsteady wind loading on a wall", Wind Struct., 4(5), 413-440. https://doi.org/10.12989/was.2001.4.5.413
  2. Baric, E., Dzijan, I. and Kozmar, H., (2010), "Numerical simulation of wind characteristics in the wake of a rectangular building submitted to realistic boundary layer conditions", Transact. Famena, 34(3), 1-10.
  3. British/European Standard BS/EN 1991-1-4:2005 (2005), Eurocode 1: Actions on structures-Part 1-4: General actions - Wind actions.
  4. Buildings Department, Hong Kong (2004), Code of practice on wind effects in Hong Kong, Government of the Hong Kong Special Administrative Region, Buildings Department, Mongkok, Hong Kong, China.
  5. Blocken, B., Stathopoulos, T. and Carmeliet, J. (2007), "CFD simulation of the atmospheric boundary layer: wall function problems", Atmos. Environ., 41(2), 238-252. https://doi.org/10.1016/j.atmosenv.2006.08.019
  6. Durbin, P.A. and Petterson Reif, B.A. (2001), Statistical theory and modeling for turbulent flows, John Wiley & Sons Press, Chichester.
  7. Engineering Sciences Data Unit (1989), Boundary walls, fences and hoarding: mean and peak wind loads and overturning moments, ESDU Data Item 89050, (revised 1990).
  8. Franke, J., Hellsten, A., Schlunzen, H. and Carissimo, B. (2007), "Best practice guideline for the CFD simulation of flows in the urban environment", COST Office, Brussels, ISBN 3-00-018312-4. http://www.mi.uni-hamburg.de/Official-Documents.5849.0.html.
  9. Gorle, C., van Beeck, J. and Rambaud, P. (2010), "Dispersion in the wake of a rectangular building: validation of two reynolds-averaged navier-stokes modelling approaches", Bound-Lay. Meteorol., 137(1), 115-133. https://doi.org/10.1007/s10546-010-9521-0
  10. Guerts, C. and van Bentum, C. (2010), "Wind loads on T-shaped and inclined free-standing walls", Wind Struct., 13(1), 83-94. https://doi.org/10.12989/was.2010.13.1.083
  11. Holmes, J.D. (2001). "Wind loading of parallel free-standing walls on bridges, cliffs, embankments and ridges", J. Wind Eng. Ind. Aerod., 89, 1397-1407. https://doi.org/10.1016/S0167-6105(01)00142-8
  12. Kozmar, H. (2011), "Wind-tunnel simulations of the suburban ABL and comparison with international standards", Wind Struct., 14 (1), 15-34. https://doi.org/10.12989/was.2011.14.1.015
  13. Labovsky, J. and Jelemensky, L. (2011), "Verification of CFD pollution dispersion modelling based on experimental data", J. Loss Prevent. Proc., 24(2), 166-177. https://doi.org/10.1016/j.jlp.2010.12.005
  14. Letchford, C.W. (2001), "Wind loads on rectangular signboards and hoardings", J. Wind Eng. Ind. Aerod., 89(2), 135-151. https://doi.org/10.1016/S0167-6105(00)00068-4
  15. Letchford, C.W. and Holmes, J.D. (1994), "Wind loads on free-standing walls in turbulent boundary layers", J. Wind Eng. Ind. Aerod., 51, 1-27. https://doi.org/10.1016/0167-6105(94)90074-4
  16. Letchford, C.W. and Robertson, A.P. (1999), "Mean wind loading at the leading ends of free standing walls", J. Wind Eng. Ind. Aerod., 79(1-2), 123-134. https://doi.org/10.1016/S0167-6105(97)00292-4
  17. Menter, F.R. (1994), "Two-equation eddy-viscosity turbulence models for engineering applications", AIAA J., 32(8), 1598-1605. https://doi.org/10.2514/3.12149
  18. O'Sullivan, J.P., Archer, R.A. and Flay, R.G.J. (2011), "Consistent boundary conditions for flows within the atmospheric boundary layer", J. Wind Eng. Ind. Aerod., 99(1), 65-77. https://doi.org/10.1016/j.jweia.2010.10.009
  19. Parente A., Gorlé C., van Beeck, J. and Benocci, C. (2011), "A comprehensive modelling approach for the neutral atmospheric boundary layer: consistent inflow conditions,wall function and turbulence model", Bound. - Lay. Meteorol, 140(3), 411-428. https://doi.org/10.1007/s10546-011-9621-5
  20. Richards, P.J. and Quinn, A.D. (2002), "A 6 m cube in an atmosphere boundary layer flow, Part 2. Computational solutions", Wind Struct., 5(2-3), 177-192. https://doi.org/10.12989/was.2002.5.2_3_4.177
  21. Shum, K.M., Hitchcock, P.A., Wong, K.S. et al. (2011), "Wind loading on noise mitigation structures in Hong Kong", Proceedings of the 13th International Conference on Wind Engineering ICWE13, Amsterdam, July.
  22. Wang, D.L., Zheng, L. and Chen, A.R. (2011), "Running cars induced wind loads on sound barrier of elevated roads", Adv. Mater. Res., 378-379, 137-142. https://doi.org/10.4028/www.scientific.net/AMR.378-379.137
  23. Yang, W., Quan, Y., Jin, X.Y., Tamura, Y. and Gu, M. (2008), "Influences of equilibrium atmosphere boundary layer and turbulence parameter on wind loads of low-rise building", J. Wind Eng. Ind. Aerod., 96(10-11), 2080-2092. https://doi.org/10.1016/j.jweia.2008.02.014
  24. Yang, Y., Gu, M., Chen, S.Q. and Jin, X.Y. (2009), "New inflow boundary conditions for modeling the neutral equilibrium atmospheric boundary layers in Computational Wind Engineering", J. Wind Eng. Ind. Aerod., 97(2), 88-95. https://doi.org/10.1016/j.jweia.2008.12.001
  25. Yang, Y. and Gu, M. (2012), "New inflow boundary conditions for modelling the neutral equilibrium atmospheric boundary layer for the SST $k-{\omega}$ model", submitted to J. Wind Eng. Ind. Aerod.
  26. Zheng, S. and Wang, L.M. (2009), "Study on the wind load shape coefficients of railway noise barriers, China railway sci, 30(4), 46-50. (Chinese)

피인용 문헌

  1. A combination method to generate fluctuating boundary conditions for large eddy simulation vol.20, pp.4, 2015, https://doi.org/10.12989/was.2015.20.4.579