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Wind loads on planar canopy roofs, Part 2: fluctuating pressure distributions and correlations

Citation

Letchford, CW and Ginger, JD, Wind loads on planar canopy roofs, Part 2: fluctuating pressure distributions and correlations, Journal of Wind Engineering & Industrial Aerodynamics, 51, (3) pp. 353-370. ISSN 0167-6105 (1994) [Refereed Article]

DOI: doi:10.1016/0167-6105(94)90068-X

Abstract

Fluctuating pressure distributions on planar canopy roofs are presented based 1:100 scale wind tunnel measurements obtained in a simulated suburban atmospheric boundary layer. For a range of roof pitch angles and wind directions, point and area-averaged pressure measurements were obtained with the worst loads experienced adjacent to lines of flow separation. For two particular roof pitches the cross correlations of area-averaged pressures were obtained and the covariance integration technique used to estimate the total fluctuating loads on the roof for a range of wind directions. Significant reductions in overall uplift and racking loads, were obtained using this method when compared with the traditional quasi-steady approach. This is because the partial correlation of fluctuating pressures is accounted for in covariance integration. © 1994.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Other Engineering
Research Field:Engineering not elsewhere classified
Objective Division:Construction
Objective Group:Construction Planning
Objective Field:Civil Construction Planning
Author:Letchford, CW (Professor Chris Letchford)
ID Code:47476
Year Published:1994
Web of Science® Times Cited:10
Deposited By:Engineering
Deposited On:2007-09-15
Last Modified:2011-11-18
Downloads:0

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