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Optimization of gridshell bar orientation using a simplified genetic approach

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Abstract

Gridshells are defined as structures that have the shape and rigidity of a double curvature shell but consist of a grid instead of a continuous surface. This study concerns those obtained by elastic deformation of an initially flat two-way grid. This paper presents a novel approach to generate gridshells on an imposed shape under imposed boundary conditions. A numerical tool based on a geometrical method, the compass method, is developed. It is coupled with genetic algorithms to optimize the orientation of gridshell bars in order to minimize the stresses and therefore to avoid bar breakage during the construction phase. Examples of application are shown.

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Authors and Affiliations

  1. Université Paris-Est, Laboratoire Navier (UMR 8205), CNRS, ENPC, IFSTTAR, Ecole des Ponts Paristech, 6 et 8 avenue Blaise Pascal, 77455, Marne-la-Vallée, France

    Lina Bouhaya, Olivier Baverel & Jean-François Caron

  2. Ecole Nationale Supérieure d’Architecture de Grenoble, 60, Avenue de Constantine, BP 2636, Grenoble Cedex 2, France

    Olivier Baverel

Authors
  1. Lina Bouhaya
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  2. Olivier Baverel
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  3. Jean-François Caron
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Correspondence to Lina Bouhaya.

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Bouhaya, L., Baverel, O. & Caron, JF. Optimization of gridshell bar orientation using a simplified genetic approach. Struct Multidisc Optim 50, 839–848 (2014). https://doi.org/10.1007/s00158-014-1088-9

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  • DOI: https://doi.org/10.1007/s00158-014-1088-9

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