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


IASS Symposium 2016

SESSION: New Approaches, Materials & Construction Methods

Design of two guadua bamboo hyperbolic paraboloid grid shell roofs: structural analysis and physical joint testing

< Table of Contents for New Approaches, Materials & Construction Methods
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: New Approaches, Materials & Construction Methods
  • Pages: 10
  • Title: Design of two guadua bamboo hyperbolic paraboloid grid shell roofs: structural analysis and physical joint testing
  • Author(s): Tim Michiels, Lu Lu, Russell Archer, Sigrid Adriaenssens, Greta Tresserra
  • Keywords: grid shells, hypars, form finding, physical testing, bamboo, parametric design, spatial roofs
Abstract
In this study we examine the relationship between the structural behavior of a bamboo grid shell and its most critical bamboo joint. A finite element analysis is performed in order to determine how the overall hypar form influences the internal loads in the bamboo poles under loading combinations of self-weight, wind and earthquake loading according to the Colombian Building Code. The most critical joint 'fish mouth' that interconnect the bamboo poles are analyzed through laboratory testing. A better understanding of the flow of forces in the hypar grid shells combined with a detailed quantification of the behavior of this 吐ish-mouth・joint, allows for a more informed and efficient use of the bamboo material used in Colombia. This study thus seeks to demonstrate how an eco-friendly, widespread and inexpensive material such as bamboo can be used at its full structural capacity in the design and construction of large span spatial roofs.

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