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Wind and Structures Volume 6, Number 2, March 2003 , pages 91-106 DOI: https://doi.org/10.12989/was.2003.6.2.091 |
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Wind tunnel modeling of roof pressure and turbulence effects on the TTU test building |
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Bogusz Bienkiewicz and Hee J. Ham
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| Abstract | ||
| The paper presents the results of 1:50 geometrical scale laboratory modeling of wind-induced point pressure on the roof of the Texas Tech University (TTU) test building. The nominal (prevalent at the TTU site) wind and two bounding (low and high turbulence) flows were simulated in a boundary-layer wind tunnel at Colorado State University. The results showed significant increase in the pressure peak and standard deviation with an increase in the flow turbulence. It was concluded that the roof mid-plane pressure sensitivity to the turbulence intensity was the cause of the previously reported field-laboratory mismatch of the fluctuating pressure, for wind normal and 30 o -off normal to the building ridge. In addition, it was concluded that the cornering wind mismatch in the roof corner/ edge regions could not be solely attributed to the wind-azimuth-independent discrepancy between the turbulence intensity of the approach field and laboratory flows. | ||
| Key Words | ||
| wind tunnel modeling; wind turbulence, low-rise buildings; flat roofs; incident wind angles;suctions; pressure fluctuations. | ||
| Address | ||
| Wind Engineering and Fluids Laboratory, Department of Civil EngineeringrnColorado State University, Fort Collins, CO 80523, USArnDivision of Architecture, Kangwon National University, Chuncheon 200-701, Korea | ||