Abstract
We have developed Ductile Cast Iron Segments, which can be erected automatically and speedily in shield tunnel construction. This segment has new structure joint instead of bolt joint which is difficult to automatize erecting. Segment joint is wedge type 'AS joint', and ring joint is hole-in-anchor type 'Anchor joint'. These joints can be jointed by sliding segment in the direction of tunnel axis and pressing. Moreover, as the bolt box is not needed, inner smoothness and omission of the secondary tunnel lining can be realized. In this report, we will describe about element technique of segment, the concept of design and the result of trial construction in subway tunnel. In the trial construction, erecting man-hour was 51% of that of bolt method segment, and circularity of tunnel has shown the better result.
Original language | English |
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Title of host publication | Challenges for the 21st Century. Proceedings of the World Tunnel Congress '99, Oslo, June 1999. (2 vols). |
Editors | T. Alten, L. Backer, P. Bollingmo, E. Broch, K. Holmoy, K.G. Holter, K. Nielsen, T. Alten, L. Backer, P. Bollingmo, E. Broch, K. Holmoy, K.G. Holter, K. Nielsen |
Publisher | A.A.Balkema |
Pages | 379-384 |
Number of pages | 6 |
ISBN (Print) | 9058090639 |
Publication status | Published - 1999 |
Event | Proceedings of the World Tunnel Congress '99. Challenges for the 21st Century. - Oslo Duration: 2099 May 31 → 2099 Jun 3 |
Other
Other | Proceedings of the World Tunnel Congress '99. Challenges for the 21st Century. |
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City | Oslo |
Period | 99/5/31 → 99/6/3 |
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Environmental Science(all)