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Vol. 43 (2002) No. 2 August n. 139

Field Study of a 30-m Span Ice Dome

< Table of Contents for Vol. 43 (2002) No. 2 August n. 139
  • 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. 43 (2002) No. 2 August n. 139
  • Pages: 93-100
  • Title: Field Study of a 30-m Span Ice Dome
  • Author(s): T. Kokawa
  • Keywords: 30-m Span Ice Dome, Construction Test, Creep Test.
A field study on both the construction and creep test of a 30-m span ice dome (25 m in base diameter, 9.2 m in height and 25 cm in average ice thickness) was carried out at Tomamu in Hokkaido during the winter of 2001. It took only six days for the completion of the big dome by the construction method of blowing snow and spraying water onto an air-inflated membrane as formwork. Following the construction, a creep test was executed under the winter natural environment in Tomamu and the structural behavior up until the collapse was examined. As a result, the central part of average displacement rate from February 17th to March 23rd, was about 6.5 mm/day, and it was shown that the dome had a good enough structural efficiency. Based on the result of this study, the future application of a 30-m span ice dome for an architectural facility could be basically possible.

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