Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Structural analysis of Félix Candela’s hexagonal hyperbolic paraboloidal umbrellas
https://orcid.org/0000-0001-9704-4752
Highlights Geometry of hexagonal hypar umbrellas, allowing for parabolic bisectors, described. Bisectors disrupt flow of internal forces and impede structural performance. Performance of 6-leaved umbrellas with r/A > 0.015 m−1 not sensitive to warping. Hexagonal hypar umbrellas more efficient than square and triangular variants.
Abstract Félix Candela was a celebrated builder of thin concrete hyperbolic paraboloidal (hypar) shells with a lasting legacy on the rationalist architectural movement of the 20th century. The iconic 4-edged square hypar umbrella became one of Candela most defining works due to its structural efficiency, economical constructability, and striking elegance. Yet, Candela’s propensity for geometric experimentation led to the development of hexagonal 6-edged umbrellas capable of supporting parabolic discontinuities bisecting each tympan into two separate leaves for projects such as the Villahermosa Cathedral. Despite their artistic appearance, the structural performance of such topologies has never been subjected to rigorous analysis. In response, this paper presents a parametric investigation into the behaviour of 6-edged umbrellas, with and without parabolic bisectors, based on the proposed Villahermosa Cathedral. Finite element modelling revealed that hexagonal umbrellas exhibit markedly reduced deflections and stresses relative to equivalent square and triangular geometries, which are inversely related to the rise-to-area ratio. Unlike square umbrellas, critical bending moments are not sensitive to the edge rise for hexagonal 6-leaved variants with a constant projected area. However, 12-leaved hexagonal umbrellas adopting parabolic discontinuities suffer from disruptions in the flow of internal forces which ultimately yield a less efficient design.
Structural analysis of Félix Candela’s hexagonal hyperbolic paraboloidal umbrellas
https://orcid.org/0000-0001-9704-4752
Highlights Geometry of hexagonal hypar umbrellas, allowing for parabolic bisectors, described. Bisectors disrupt flow of internal forces and impede structural performance. Performance of 6-leaved umbrellas with r/A > 0.015 m−1 not sensitive to warping. Hexagonal hypar umbrellas more efficient than square and triangular variants.
Abstract Félix Candela was a celebrated builder of thin concrete hyperbolic paraboloidal (hypar) shells with a lasting legacy on the rationalist architectural movement of the 20th century. The iconic 4-edged square hypar umbrella became one of Candela most defining works due to its structural efficiency, economical constructability, and striking elegance. Yet, Candela’s propensity for geometric experimentation led to the development of hexagonal 6-edged umbrellas capable of supporting parabolic discontinuities bisecting each tympan into two separate leaves for projects such as the Villahermosa Cathedral. Despite their artistic appearance, the structural performance of such topologies has never been subjected to rigorous analysis. In response, this paper presents a parametric investigation into the behaviour of 6-edged umbrellas, with and without parabolic bisectors, based on the proposed Villahermosa Cathedral. Finite element modelling revealed that hexagonal umbrellas exhibit markedly reduced deflections and stresses relative to equivalent square and triangular geometries, which are inversely related to the rise-to-area ratio. Unlike square umbrellas, critical bending moments are not sensitive to the edge rise for hexagonal 6-leaved variants with a constant projected area. However, 12-leaved hexagonal umbrellas adopting parabolic discontinuities suffer from disruptions in the flow of internal forces which ultimately yield a less efficient design.
Structural analysis of Félix Candela’s hexagonal hyperbolic paraboloidal umbrellas
https://orcid.org/0000-0001-9704-4752
Highlights Geometry of hexagonal hypar umbrellas, allowing for parabolic bisectors, described. Bisectors disrupt flow of internal forces and impede structural performance. Performance of 6-leaved umbrellas with r/A > 0.015 m−1 not sensitive to warping. Hexagonal hypar umbrellas more efficient than square and triangular variants.
Abstract Félix Candela was a celebrated builder of thin concrete hyperbolic paraboloidal (hypar) shells with a lasting legacy on the rationalist architectural movement of the 20th century. The iconic 4-edged square hypar umbrella became one of Candela most defining works due to its structural efficiency, economical constructability, and striking elegance. Yet, Candela’s propensity for geometric experimentation led to the development of hexagonal 6-edged umbrellas capable of supporting parabolic discontinuities bisecting each tympan into two separate leaves for projects such as the Villahermosa Cathedral. Despite their artistic appearance, the structural performance of such topologies has never been subjected to rigorous analysis. In response, this paper presents a parametric investigation into the behaviour of 6-edged umbrellas, with and without parabolic bisectors, based on the proposed Villahermosa Cathedral. Finite element modelling revealed that hexagonal umbrellas exhibit markedly reduced deflections and stresses relative to equivalent square and triangular geometries, which are inversely related to the rise-to-area ratio. Unlike square umbrellas, critical bending moments are not sensitive to the edge rise for hexagonal 6-leaved variants with a constant projected area. However, 12-leaved hexagonal umbrellas adopting parabolic discontinuities suffer from disruptions in the flow of internal forces which ultimately yield a less efficient design.
Structural analysis of Félix Candela’s hexagonal hyperbolic paraboloidal umbrellas
Wang, Shengzhe (Autor:in) / Contreras-Jimenez, Jose Antonio (Autor:in) / Jorquera-Lucerga, Juan Jose (Autor:in) / Garlock, Maria (Autor:in)
Engineering Structures ; 266
20.06.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Hyperbolic Paraboloidal Shell and Felix Candela
| British Library Conference Proceedings | 2002
Hyperbolic Paraboloidal Shell and Felix Candela
| British Library Conference Proceedings | 2002
Shallow hyperbolic paraboloidal shells
| TIBKAT | 1961