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Estimation of Wind Pressure Coefficients on Even-Span Greenhouse Built in Reclaimed Land according to Roof Slop using Wind Tunnel

풍동을 이용한 간척지 내 양지붕형 온실의 지붕 경사에 따른 풍압계수 평가

  • 김락우 (서울대학교 지역시스템공학과) ;
  • 김동우 (주식회사 티이솔루션) ;
  • 류기철 (주식회사 티이솔루션) ;
  • 권경석 (서울대학교 지역시스템공학과) ;
  • 이인복 (서울대학교 지역시스템공학과)
  • Received : 2014.10.10
  • Accepted : 2014.11.10
  • Published : 2014.12.31

Abstract

To cope with increasing of vegetables and flowers consumptions, horticulture facilities have been modernized. Korea government recently announced construction plan of new greenhouse complex at reclaimed land. However wind characteristics of reclaimed land is totally different from those of inland, wind pressure on greenhouse built in reclaimed land should be carefully evaluated to secure structural safety on the greenhouse. In this study, as a first step, wind pressure coefficient and local wind pressure coefficient on even-span greenhouse were measured using wind tunnel test. ESDU was adopted to realize wind characteristics of reclaimed land such as wind and turbulence profiles. From the wind tunnel test, when wind direction was 0 degree, it was concluded that KBC2009 standard underestimated scale of wind pressure coefficients at roof area of greenhouse whereas NEN-EN2002 standard underestimated those at every surface of greenhouse. When wind direction was 90 degree, both standards did not well reflect the characteristics of wind pressure distribution. From the analysis of local wind pressure coefficients according to wind direction conditions, design of covering, glazing bar of greenhouse where large effects of the local wind pressure were estimated should be well established. Wind pressure coefficients and local wind pressure coefficients according to parts of the greenhouse were finally suggested and these results could be practically used for suggesting new design standards of greenhouse.

Keywords

References

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