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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Bending Active and Flexible Structures

Actively-bent plywood floor frame with in-plane curvature

< Table of Contents for Bending Active and Flexible Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Bending Active and Flexible Structures
  • Pages: 10
  • Title: Actively-bent plywood floor frame with in-plane curvature
  • Author(s): Alfonso Garcia, Juan Monjo, Hiroyasu Sakata, Ramón Sastre, Yoshihiro Yamazaki
  • Keywords: plywood, active bending, wooden floor frame, in-plane curvature, prestressed structure
Abstract
Deformation is often the critical parameter for wooden structures subjected to bending. The cross section of these structural elements could easily comply with strength criteria but not with those concerning stiffness. This issue is even more decisive dealing with long-term behaviour. In order to increase the stiffness of a wooden horizontal floor frame, this paper proposes to introduce elastically bent elements made from standard plywood but placed with in-plane curvature. These actively-bent components are coupled to some others to define joists as tie-arch groups. Due to the form finding process all the elements acquire prestress: bending stress for the curved elements and tension prestress for the ones that remain straight. Also camber can appear. Comprehensive parametric study is performed by varying the key parameters characterizing the geometry of the solution. Finally, the knowledge achieved during the parametric study will be used to establish a final proposal.

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