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A Study on the Shape Modeling and Structural Stability of an Icosahedron-typed Modular Dome

정20면체 모듈러 돔의 형상모델링 및 구조안정성에 관한 연구

  • Shon, Su-Deok (School of Arch. Eng., Korea Univ. of Tech. & Education) ;
  • Woo, Hyo-Jun (School of Arch. Eng., Korea Univ. of Tech. & Education) ;
  • Lee, Seung-Jae (School of Arch. Eng., Korea Univ. of Tech. & Education)
  • 손수덕 (한국기술교육대학교 건축공학부) ;
  • 우효준 (한국기술교육대학교 건축공학부 대학원) ;
  • 이승재 (한국기술교육대학교 건축공학부)
  • Received : 2014.12.29
  • Accepted : 2015.03.02
  • Published : 2015.06.15

Abstract

In this study, a shape design and an analysis considering structural stability were investigated to develop an icosahedron-based hemispherical modular dome. To design this modular dome, a program that can perform icosahedron shape modeling, modularization of joint connection members, and the analysis of structural stability was developed. Furthermore, based on the adopted numerical model, the eigen buckling mode, unstable behavior characteristics according to load vector, and the critical buckling load of the modular dome under uniformly distributed load and concentrated load were analyzed, and the resistance capacities of the structure according to different load vectors were compared. The analysis results for the modular dome suggest that the developed program can perform joint modeling for shape design as well as modular member design, and adequately expressed the nonlinear behaviors of structured according to load conditions. The critical buckling load results also correctly reflected the characteristics of the load conditions. The uniformly distributed load was more advantageous to the structural stability than concentrated load.

Acknowledgement

Supported by : 국토해양부, 한국연구재단

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