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Open AccessArticle

Integrated Parametric Shaping of Curvilinear Steel Bar Structures of Canopy Roofs

Department of Architectural Design and Engineering Graphics, Faculty of Civil and Environmental Engineering and Architecture, Rzeszow University of Technology, al. Powstancow Warszawy 12, 35-959 Rzeszow, Poland
Buildings 2019, 9(3), 72; https://doi.org/10.3390/buildings9030072
Received: 26 February 2019 / Revised: 16 March 2019 / Accepted: 18 March 2019 / Published: 21 March 2019
(This article belongs to the Special Issue IT in Design, Construction, and Management)
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Abstract

Shaping building objects is conditioned by many interrelated factors, both architectural and structural. Modern tools for shaping structures working in the environment of Rhinoceros 3D such as Grasshopper and Karamba 3D enable algorithmic-aided shaping structures, while allowing the free flow of information between the geometric model and structural model. The aim of the research is to use these tools to test the curvilinear steel bar roofs’ structures shaped based on Catalan surfaces as well as to select the most efficient structure. Three types of roof structures were analyzed: cylindroid shape, conoid shape, and hyperbolic paraboloid shape. In order to find the most preferred structural form, evolutionary structural optimization was carried out, which allowed, among others, to determine optimal discretization of the base surface, as well as optimal positions of supporting columns. As the optimization criterion, the minimum mass of the structure was assumed. The most effective structure turned out to be a structure based on hyperbolic paraboloid supported by multi-branch columns. The use of a roof with the above structure is beneficial not only because of the low weight of the structure compared to the analyzed structures, but also due to the possibility of using flat panels on the roof. View Full-Text
Keywords: structural optimization; shaping structures; parametric design; data flow; Grasshopper; Karamba 3D; integrated design; cost limitation; FEM structural optimization; shaping structures; parametric design; data flow; Grasshopper; Karamba 3D; integrated design; cost limitation; FEM
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Dzwierzynska, J. Integrated Parametric Shaping of Curvilinear Steel Bar Structures of Canopy Roofs. Buildings 2019, 9, 72.

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