Experimental Study of Wind Loads on Domed Free Roofs
Design wind loads on domed free roofs have been investigated in a wind tunnel. Wind pressure distributions both on the top and bottom surfaces of the roof models were measured. The rise-to-span ratio, f/D, was varied from 0.1 to 0.4. First, the effect of the Reynolds number on the pressure distribution is examined. Then, the effects of f/D on the wind pressures and forces are made clear. The wind force coefficients for designing the main wind force resisting systems are proposed, in which focus is on the axial forces induced in the columns supporting the roof as the most important load effect, assuming that the roof is rigid and supported by four columns. Finally, the peak wind force coefficients for the design of cladding/components are proposed based on the maximum and minimum peak wind force coefficients irrespective of wind direction.
KeywordsDomed free roof Design wind load Wind tunnel experiment Codification
The present study was financially supported by Membrane Structures Association of Japan.
- Architectural Institute of Japan (2015) Recommendations for Loads on Buildings. (in Japanese)Google Scholar
- Takeda F, Yoshino T, Uematsu Y (2014) Design wind force coefficients for hyperbolic paraboloid free roofs. J Phys Sci Appl 4(1):1–19Google Scholar
- Uematsu Y, Miyamoto Y, Gavanski E (2014a) Wind loading on a hyperbolic paraboloid free roof. J Civ Eng Archit 8:1233–1242Google Scholar
- Uematsu Y, Sakurai H, Miyamoto Y, Gavanski E (2013) Wind force coefficients for designing porous canopy roofs. J Civ Eng Archit 7(9):1047–1055Google Scholar
- Uematsu Y, Miyamoto Y, Gavanski E (2014b) Wind loading on a hyperbolic paraboloid free roof. J Civ Eng Archit 8(10):1–19Google Scholar
- Uematsu Y, Miyamoto Y, Gavanski E (2015) Effects of porosity on the Wind loads on a hyperbolic paraboloid canopy roof. J Civ Eng Archit 9(6):715–726Google Scholar
- Wen L, Yamamura R, Uematsu Y (2018) Characteristics of wind forces on domed free roofs, Summaries of technical papers of annual meeting, Structure I, Architectural Institute of Japan, pp 129–130. (in Japanese)Google Scholar
- Yamamura R, Uematsu Y, Takadate Y (2018) Wind force coefficients for designing curved free roofs Part 1: cylindrical roofs, Research paper on membrane structures 2017, Membrane Structures Association of Japan, 31, 11–24. (in Japanese)Google Scholar