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This paper analyzed the effect of wind loadings on high-rise building for different terrain categories. The wind speed and design wind pressure for the different terrain categories adopted for this study were calculated as per logarithmic wind profile equation and BS6399-2:1997 respectively. Also, the nodal displacement of a 3D high-rise building model with reference to the calculated design wind loads were performed using finite element analysis software(STADDPROV8I). From the result obtained, it was shown that Terrain category IV when compared to other terrain categories recorded lower wind speed and pressure from the ground to a height of about 10m. The writers also observed that at greater terrain category(TC4), the wind speed and pressure tends to be much higher at the top floors(10m-48m) of the high-rise building whereas, terrain categories (TC3, TC2, TC1) recorded lower wind speed and pressure at that same height(10m-48m). this disparity however was discovered to be due to a phenomenon known as gust effect. Also, the nodal displacement for the different terrain category (TC4, TC3, TC2 and TC1) on each floor of the high-rise building increased uniformly in respective pattern as the height of the 3D model increases.  In conclusion, the authors therefore remark “the greater the terrain category, the lowest is the wind speed in the roughness sub layer and the longer height it takes to reach gradient wind speed”.

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References

  1. Guild to wind classification, Monier top cat in roofing, CSR, 2014, pp. 1-8.
     Google Scholar
  2. N.Ghazali “Development of terrain height multipliers abd roughness length for seberang perai region”M.S. thesis,Dept.Structural Engineering.,Sains Univ.,Sains, Malaysia,2010.
     Google Scholar
  3. H.Wagner,J.Mathur, Introduction to wind energy system; New York: Springer international publishing AG,2009,Ch2
     Google Scholar
  4. C.Cho “Proposal for unified terrain categories exposures and velocity profiles” Presented at the seventh Asia-pacific conference on wind engineering, Taipei, Taiwan. January, 1(2009).
     Google Scholar
  5. BS6399-2:1997. Loading for buildings-part 2: code of practice for wind loads BSI
     Google Scholar
  6. M.Raupach,R.Antonia and S.Rajagopalam(January 1991). Rough wall turbulent boundary layers. Applied mechanics review. [Online].44(1).pp.1-25.Available: http://appliedmechanicsreviews.asmedigitalcollection.org/mobile/article.aspx?articleid=1394334.
     Google Scholar
  7. J.Summer, W.Zhu, C.Lin and X.Feng(November 2013).Field approaches to measure Hg exchange between natural surface and the atmosphere-A Review. Critical Review in Environmental science and technology. [Online].43(15).pp.1657-1739.Available: https://doi.org/10.1080/10643389.2012.671733.
     Google Scholar
  8. H.Cheng and I. Castro. (August 2002). Near wall flow over urban-like roughness. Boundary-layer metrology. [Online].104(2). pp.229-259.Available: http://link.sringer.com/article/10.1023/A:1016060103448.
     Google Scholar
  9. H. Tieleman.(January2008)Strong wind observations in the atmospheric surface layer.Journal of wind engineering and industrial aerodynamics. [Online] 96(1), pp.41-77. Available:https://doi.org/10.1016/j.jweia.2007.03.003.
     Google Scholar
  10. M. Ahmed, M. Amir, S. Komur and V. Halhalli (June 2015) Effect of wind load on tall building in different terrain category. International Journal of Research in Engineering and Technology. [Online]4(6), pp.107-111.Available:http://www.ijret.org.107.
     Google Scholar