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


IASS Symposium 2016

SESSION: Metal Spatial Structures

Reliability analysis of buckling load of reticulated domes of a circular plan under uniform snow load

< Table of Contents for Metal Spatial Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Metal Spatial Structures
  • Pages: 10
  • Title: Reliability analysis of buckling load of reticulated domes of a circular plan under uniform snow load
  • Author(s): Shiro Kato, Takanori Oya, Toshimasa Yanagisawa, Kazuki Nakazawa, Yoichi Mukaiyama, Shoji Nakazawa
  • Keywords: buckling, reticular dome, snow load, failure, reliability index, global load factor, imperfection
Abstract
The present paper discusses on the relationship between the reliability index and global load factor which are both the key factors in design for buckling of single layer reticular domes. The load is restricted in this study to dead and uniform snow loads. Firstly an approximate formula for nominal buckling load is presented, then followed by a proposal for reliability performance function to evaluate the failure probability. The performance function is solved to derive the relationship between the reliability index and snow load factor for design. The relationship is then transformed to the relationship between the reliability index and global load factor. Several discussions about the results are given from a viewpoint of anti-buckling design with focusses on the effect of the imperfection for design.

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