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Vol. 41 (2000) No. 2 August n. 133


Structural Idea of Retractable Loop-Dome

< Table of Contents for Vol. 41 (2000) No. 2 August n. 133
  • 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. 41 (2000) No. 2 August n. 133
  • Pages: 111-116
  • Title: Structural Idea of Retractable Loop-Dome
  • Author(s): T. Kokawa
  • Keywords: Retractable Loop-Dome, 3-Dimensional Multi-Angulated Scissor Element, Rational Structural System, Expandable Circular Ring.
Abstract
The author proposes a 3-dimensional multi-angulated scissor element as the main structural element of a new type of dome called ‘Retractable Loop-Dome’. It allows the dome to continuously change its shape according to changes in the diameter of the oculus. This paper describes 1) the geometry of the 3-D multi-angulated scissor element determined by cutting a sphere with a plane passing through the apex, 2) a proposal for a rational structural system with expandable circular rings for a large span and 3) a numerical simulation of the changing shape and the trial construction of an aluminum model with a 10 m base diameter.

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