Modelling the impact of deterioration on the long-term performance of Dublin Tunnel

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dc.contributor.authorWang, Chaoen
dc.contributor.authorXiao, Zhipengen
dc.contributor.authorFriedman, Milesen
dc.contributor.authorLi, Zilien
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderTransport Infrastructure Irelanden
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.date.accessioned2024-10-03T11:09:55Z
dc.date.available2024-10-03T11:09:55Z
dc.date.issued2024-09-11en
dc.description.abstractThe influence of tunnel deteriorations on its long-term performance has received extensive attention recently. Most studies considered deteriorations by manually varying the magnitude of parameters like permeability and stiffness, neglecting their time-dependent variation. This paper addresses this gap by investigating the impact of time-dependent deteriorations on the long-term behaviour of the aging Dublin Port Tunnel (DPT). A modified analytical relative ground-lining permeability model and calculated deteriorated permeability for DPT were presented, with steps and procedures generalised. The deteriorated permeability was incorporated into the hydraulic deterioration model, together with mechanical deterioration, offering a more holistic and realistic prediction of DPT’s long-term performance than previously available. Numerical results, compared against field measurements, showed (1) assuming constant permeability fails to accurately capture time-dependent liner deformation, and hydraulic deterioration is the dominant factor inducing an approaching squatting deformation mode; (2) continuous mechanical deterioration leads to a linear growth in vertical and horizontal convergence over time, with vertical convergence being more pronounced, indicating a squatting contraction deformation mode; (3) the comparison quantitatively evaluates the impact of individual and coupled hydro-mechanical deterioration on DPT’s long-term behaviour and the agreement between field data and numerical results confirms coupled lining deterioration is the root cause behind the observation.en
dc.description.sponsorshipScience Foundation Ireland and Transport Infrastructure Ireland (iCRAG (Irish Centre for Research in Applied Geosciences)); National Natural Science Foundation of China (No. 51978530)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleidcgj-2024-0296en
dc.identifier.citationWang, C., Xiao, Z., Friedman, M. and Li, Z. (2024) ‘Modelling the impact of deterioration on the long-term performance of Dublin Tunnel’, Canadian Geotechnical Journal, p. cgj-2024-0296. Available at: https://doi.org/10.1139/cgj-2024-0296en
dc.identifier.doihttps://doi.org/10.1139/cgj-2024-0296en
dc.identifier.endpage39en
dc.identifier.issn0008-3674en
dc.identifier.issn1208-6010en
dc.identifier.journaltitleCanadian Geotechnical Journalen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/16496
dc.language.isoenen
dc.publisherCanadian Science Publishingen
dc.relation.ispartofCanadian Geotechnical Journalen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/13/RC/2092/IE/Irish Centre for Research in Applied Geosciences (iCRAG)/en
dc.rights© The Author(s)en
dc.subjectRelative ground-lining permeabilityen
dc.subjectHydraulic and mechanical deteriorationen
dc.subjectCoupled deteriorationen
dc.subjectTunnel long-term performanceen
dc.subjectFinite element modellingen
dc.titleModelling the impact of deterioration on the long-term performance of Dublin Tunnelen
dc.typeArticle (peer-reviewed)en
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