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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Yasushi Uematsu1 and Wei Ding2
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DOI:10.17265/1934-7359/2025.04.001
1. New Industry Creation Hatchery Center, Tohoku University, Sendai 980-8579, Japan
2. National Institute of Technology, Akita College, Akita 011-8511, Japan
The present paper investigates the methods for estimating the maximum (positive) and the minimum (negative) peak wind force coefficients on domed free roofs based on the quasi-steady theory and the peak factor method, in which the experimental results obtained from our previous studies (2019, 2025) are used. Focus is on the distributions of the peak wind force coefficients along the centerline parallel to the wind direction considering that domed free roof is an axisymmetric body. Empirical formulas are provided to the distributions of mean wind force coefficient, RMS (root mean square) fluctuating wind force coefficient and peak factors as a function of the rise/span ratio of the roof and the turbulence intensity of the approach flow in the along-wind direction at the mean roof height. The proposed methods are validated by the experimental results for the peak wind force coefficients. The methods would provide useful information to structural engineers when estimating the design wind loads on cladding/components of domed free roofs.
Domed free roof, peak wind force coefficient, quasi-steady theory, peak factor, wind tunnel experiment.
Journal of Civil Engineering and Architecture 19 (2025) 157-166
doi: 10.17265/1934-7359/2025.04.001
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