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On-line Journal of the IASS

Vol. 39 (1998) No. 2 April n. 127


Numerical analysis of rotational buckling in gusset plate type joints of timber lattice dome under several loading conditions

< Table of Contents for Vol. 39 (1998) No. 2 April n. 127
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 39 (1998) No. 2 April n. 127
  • Title: Numerical analysis of rotational buckling in gusset plate type joints of timber lattice dome under several loading conditions
  • Author(s): T. Nishimura , K. Morisako and S. Ishida
  • Keywords: timber, joint, rotaional buckling
Abstract
Numerical study of critical behaviors of a timber lattice dome with steel gusset plate type joints under several loading conditions is conducted using the spatial beam-column FEM developed by the authors. The good accuracy of this numerical method is verified by the simulation of the full-scale physical test of the timber lattice dome in EXPO’90 Osaka, in which the rotational buckling of the node joint composed of six steel gusset plates has previously been observed. The numerical data of strain in one of the steel plates suggest that the rotational buckling was induced by lateral elastic buckling of plates. Under the loading conditions adopted here, the initial critical behavior of the lattice dome was neither overall snap-through of the dome nor buckling of individual wooden members but was invariably the rotational buckling of the node joints.

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