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


IASS Symposium 2016

SESSION: Extreme Loads & Disasters

Effect of partial unbalanced snow load distributions of double layer truss domes on the load carrying capacity

< Table of Contents for Extreme Loads & Disasters
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Extreme Loads & Disasters
  • Pages: 8
  • Title: Effect of partial unbalanced snow load distributions of double layer truss domes on the load carrying capacity
  • Author(s): Koichiro Ishikawa, Shohei Fujita
  • Keywords: double layer truss domes, snow load carrying capacity, unbalanced snow load distributions, elasto-plastic buckling analysis, maximum accumulated snow depth, order of member buckling occurrence, position of the member buckling occurrence
Abstract
The study deals with the static elasto-plastic analysis considering a member buckling of double layer truss domes subjected to uniform and partial unbalanced distribution snow loads. The load carrying capacity of the truss dome is investigated by means of the analysis using a model of a pin connected truss model. The maximum snow load and the reaction at the support are investigated by the analysis of the truss dome subjected to the various snow loads. A distribution of the snow load is taken to be three distribution forms such as a uniform, a central portion and a one half side portion forms. The collapse mechanism of the dome has the member buckling chain due to a compression stress. The effect of the unbalanced snow load distribution to the load carrying capacity is compared with the load carrying capacity of the dome subjected to uniform distribution snow load.

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