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Pressure coefficient distributions for the design of hypar membrane roof and canopy structures

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Abstract
Membrane structures are used in the built environment as roof or canopy and must therefore be designed to resist the external conditions. Nonetheless, the topologies of membrane structures are not covered by existing wind load standards and relevant wind load distributions for the basic shapes of these structures are almost not available. To have a realistic analysis of the wind loading, wind tunnel tests can be performed for each design. However, due to the lack of resources or time, for many projects the wind analysis will be based on rough approximations by relying on conventional shapes in the Eurocodes, with applying very high safety factors or designing unsafe structures as risk. Therefore, this paper presents a study of the orientation and curvature dependency of the wind load distributions over hypar roof and canopy structures. This study is performed with a numerical wind tunnel, using CFD with Reynolds averaged Navier Stokes equations. The outcomes are summarised in pressure coefficient distribution plots for most important wind orientations for hypar roofs and canopies with different curvature. The presented pressure coefficient distributions can be used in line with the Eurocode to derive more relevant wind load estimations for hypar membrane structures. These wind load estimations will give the engineer information about the average response of these structures under wind loading and will facilitate more reliable wind design of membrane structures.
Keywords
CFD, Cp-distribution, Eurocode, Hypar, Tensile surface structures, Wind loading

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MLA
Colliers, Jimmy, et al. “Pressure Coefficient Distributions for the Design of Hypar Membrane Roof and Canopy Structures.” Proceedings of the TensiNet Symposium 2019 : Softening the Habitats, edited by Allesandra Zanelli et al., Maggioli ADV, 2019, pp. 84–94.
APA
Colliers, J., Mollaert, M., Degroote, J., & De Laet, L. (2019). Pressure coefficient distributions for the design of hypar membrane roof and canopy structures. In A. Zanelli, C. Monticelli, M. Mollaert, & B. Stimpfle (Eds.), Proceedings of the TensiNet Symposium 2019 : Softening the habitats (pp. 84–94). Milan, Italy: Maggioli ADV.
Chicago author-date
Colliers, Jimmy, Marijke Mollaert, Joris Degroote, and Lars De Laet. 2019. “Pressure Coefficient Distributions for the Design of Hypar Membrane Roof and Canopy Structures.” In Proceedings of the TensiNet Symposium 2019 : Softening the Habitats, edited by Allesandra Zanelli, Carol Monticelli, Marijke Mollaert, and Bernd Stimpfle, 84–94. Maggioli ADV.
Chicago author-date (all authors)
Colliers, Jimmy, Marijke Mollaert, Joris Degroote, and Lars De Laet. 2019. “Pressure Coefficient Distributions for the Design of Hypar Membrane Roof and Canopy Structures.” In Proceedings of the TensiNet Symposium 2019 : Softening the Habitats, ed by. Allesandra Zanelli, Carol Monticelli, Marijke Mollaert, and Bernd Stimpfle, 84–94. Maggioli ADV.
Vancouver
1.
Colliers J, Mollaert M, Degroote J, De Laet L. Pressure coefficient distributions for the design of hypar membrane roof and canopy structures. In: Zanelli A, Monticelli C, Mollaert M, Stimpfle B, editors. Proceedings of the TensiNet Symposium 2019 : Softening the habitats. Maggioli ADV; 2019. p. 84–94.
IEEE
[1]
J. Colliers, M. Mollaert, J. Degroote, and L. De Laet, “Pressure coefficient distributions for the design of hypar membrane roof and canopy structures,” in Proceedings of the TensiNet Symposium 2019 : Softening the habitats, Milan, Italy, 2019, pp. 84–94.
@inproceedings{8639970,
  abstract     = {{Membrane structures are used in the built environment as roof or canopy and must therefore be designed to resist the external conditions. Nonetheless, the topologies of membrane structures
are not covered by existing wind load standards and relevant wind load distributions for the
basic shapes of these structures are almost not available. To have a realistic analysis of the wind
loading, wind tunnel tests can be performed for each design. However, due to the lack of
resources or time, for many projects the wind analysis will be based on rough approximations
by relying on conventional shapes in the Eurocodes, with applying very high safety factors or
designing unsafe structures as risk. Therefore, this paper presents a study of the orientation and
curvature dependency of the wind load distributions over hypar roof and canopy structures. This
study is performed with a numerical wind tunnel, using CFD with Reynolds averaged Navier
Stokes equations. The outcomes are summarised in pressure coefficient distribution plots for
most important wind orientations for hypar roofs and canopies with different curvature. The
presented pressure coefficient distributions can be used in line with the Eurocode to derive more
relevant wind load estimations for hypar membrane structures. These wind load estimations
will give the engineer information about the average response of these structures under wind
loading and will facilitate more reliable wind design of membrane structures.}},
  author       = {{Colliers, Jimmy and Mollaert, Marijke and Degroote, Joris and De Laet, Lars}},
  booktitle    = {{Proceedings of the TensiNet Symposium 2019 : Softening the habitats}},
  editor       = {{Zanelli, Allesandra and Monticelli, Carol and Mollaert, Marijke and Stimpfle, Bernd}},
  issn         = {{2036-3273}},
  keywords     = {{CFD,Cp-distribution,Eurocode,Hypar,Tensile surface structures,Wind loading}},
  language     = {{eng}},
  location     = {{Milan, Italy}},
  pages        = {{84--94}},
  publisher    = {{Maggioli ADV}},
  title        = {{Pressure coefficient distributions for the design of hypar membrane roof and canopy structures}},
  url          = {{http://dx.doi.org/10.30448/ts2019.3245.15}},
  year         = {{2019}},
}

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