Unstable behavior of segmental ring under various pressures and its discrete element simulation.

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dc.contributor.author Kikkawa, Naotaka en
dc.contributor.author Hiraoka, Nobutaka en
dc.contributor.author Itoh, Kazuya en
dc.contributor.author Orense, Rolando en
dc.date.accessioned 2019-03-18T01:41:23Z en
dc.date.issued 2018-11 en
dc.identifier.citation Industrial health 56(6):475-484 Nov 2018 en
dc.identifier.issn 0019-8366 en
dc.identifier.uri http://hdl.handle.net/2292/46030 en
dc.description.abstract In February 2012, a serious accident which resulted in five fatalities happened during a TBM-tunnel construction under the seabed in Japan. The cause of the accident appeared to be due to the Key-segment slipping out of the segment ring by the thrusting tailskin (wire brushes) of the TBM into the segment ring. This resulted in the collapse of the rings, causing the seabed ground and seawater to flow into the tunnel. We investigated how thin and thick segments without any circumferential joints behave under isotropic and anisotropic pressures using small-scale physical model. In the model tests, pressures were applied to the surroundings of the segment rings and the strains at each segment were measured in order to evaluate the damage. In addition, cases where lubrication on the contact area between the K- and B-segments was present or not were investigated and their discrete element simulations were also conducted. en
dc.format.medium Print-Electronic en
dc.language eng en
dc.relation.ispartofseries Industrial health en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Humans en
dc.subject Equipment Failure en
dc.subject Accidents, Occupational en
dc.subject Pressure en
dc.subject Japan en
dc.subject Construction Industry en
dc.title Unstable behavior of segmental ring under various pressures and its discrete element simulation. en
dc.type Journal Article en
dc.identifier.doi 10.2486/indhealth.2018-0049 en
pubs.issue 6 en
pubs.begin-page 475 en
pubs.volume 56 en
dc.rights.holder Copyright: National Institute of Occupational Safety and Health en
pubs.end-page 484 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype research-article en
pubs.subtype Journal Article en
pubs.elements-id 757218 en
pubs.org-id Engineering en
pubs.org-id Civil and Environmental Eng en
dc.identifier.eissn 1880-8026 en
pubs.record-created-at-source-date 2018-06-26 en
pubs.dimensions-id 29937476 en


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https://creativecommons.org/licenses/by-nc-nd/4.0/ Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by-nc-nd/4.0/

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