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


IASS Symposium 2016

SESSION: Timber Structures & Environmental Compatibility

Experimental study on single layer two-way grid spherical dome composed of prefabricated wooden truss system with tension rod members

< Table of Contents for Timber Structures & Environmental Compatibility
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Timber Structures & Environmental Compatibility
  • Pages: 10
  • Title: Experimental study on single layer two-way grid spherical dome composed of prefabricated wooden truss system with tension rod members
  • Author(s): Masumi Fujimoto, Katsuhiko Imai, Atsuo Takino, Zhonghao Zhang
  • Keywords: single layer two-way grid, round timber member, spherical dome, tension member, buckling experiment, buckling design method
Abstract
In this study, we treat a single layer two-way grid spherical dome composed of wooden prefabricated truss system with tension rod members to get the new structural data. The effect of tension members on the structural behaviour of the two-way grid shell had been shown through experimental studies. Two-way grid members are Japanese cypress round timbers; tension rod members are PC bar. Loading patterns are the concentrated centre load and the asymmetrical concentrated. The initial axial force of tension member is determined by engineering judgement. The difference between manufactured member length and nominal member length correspond macroscopically to the introduced axial forces of tension members. From loading experiments, the buckling load of grid shells and the rigidity of load displacement relation increase through the increase in introduced initial axial force. The effect of tension member initial axial force on load deformation behaviour of single layer grid shell is confirmed. 55

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