Development of bolt-less, automated erection ductile cast iron segments

A. Koizumi, T. Matsuda, M. Yasaka, H. Sato, T. Aoki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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 languageEnglish
    Title of host publicationChallenges for the 21st Century. Proceedings of the World Tunnel Congress '99, Oslo, June 1999. (2 vols).
    EditorsT. 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
    PublisherA.A.Balkema
    Pages379-384
    Number of pages6
    ISBN (Print)9058090639
    Publication statusPublished - 1999
    EventProceedings of the World Tunnel Congress '99. Challenges for the 21st Century. - Oslo
    Duration: 2099 May 312099 Jun 3

    Other

    OtherProceedings of the World Tunnel Congress '99. Challenges for the 21st Century.
    CityOslo
    Period99/5/3199/6/3

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    ASJC Scopus subject areas

    • Earth and Planetary Sciences(all)
    • Environmental Science(all)

    Cite this

    Koizumi, A., Matsuda, T., Yasaka, M., Sato, H., & Aoki, T. (1999). Development of bolt-less, automated erection ductile cast iron segments. In 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 (Eds.), Challenges for the 21st Century. Proceedings of the World Tunnel Congress '99, Oslo, June 1999. (2 vols). (pp. 379-384). A.A.Balkema.