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Article: Three-dimensional finite-element analysis on ground responses during twin-tunnel construction using the URUP method

TitleThree-dimensional finite-element analysis on ground responses during twin-tunnel construction using the URUP method
Authors
KeywordsURUP method
Full-scale test
Numerical simulation
EPB
Case history
Issue Date2016
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/tust
Citation
Tunnelling and Underground Space Technology, 2016, v. 58, p. 133-146 How to Cite?
AbstractThe paper presents a finite-element analysis of a metro tunnel project using the URUP method in which the shield machine is launched and received at the ground surface level. During the tunnelling process, the cover depth varied from 0.7D (D is the excavation diameter) to −0.3D in which case the shield machine was partially above the ground surface. A three-dimensional finite element model is proposed via the commercial software ABAQUS considering the actual geological condition and tunnelling procedures. Elasto-plasticity constitutive models are utilised for the top three strata in the finite element analysis (FEA). Constant gradients corresponding to material density are assumed for the face supporting pressure and the grouting pressure in the model. The ground contraction method is employed to simulate the shield-induced volume loss. The numerical model is firstly validated against the field measurement data considering the surface settlement. Parametric studies are performed subsequently to investigate the influence of some key tunnelling variables including cover-to-diameter ratio and face supporting pressure on the ground responses. According to the FEA, a critical cover depth of 0.55D is proposed for URUP method below which value instability and collapse of surrounding soils will be highly likely.
Persistent Identifierhttp://hdl.handle.net/10722/249628
ISSN
2019 Impact Factor: 4.45
2015 SCImago Journal Rankings: 2.023
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, ZX-
dc.contributor.authorLiu, C-
dc.contributor.authorHuang, X-
dc.contributor.authorKwok, CY-
dc.contributor.authorTeng, L-
dc.date.accessioned2017-11-21T03:04:50Z-
dc.date.available2017-11-21T03:04:50Z-
dc.date.issued2016-
dc.identifier.citationTunnelling and Underground Space Technology, 2016, v. 58, p. 133-146-
dc.identifier.issn0886-7798-
dc.identifier.urihttp://hdl.handle.net/10722/249628-
dc.description.abstractThe paper presents a finite-element analysis of a metro tunnel project using the URUP method in which the shield machine is launched and received at the ground surface level. During the tunnelling process, the cover depth varied from 0.7D (D is the excavation diameter) to −0.3D in which case the shield machine was partially above the ground surface. A three-dimensional finite element model is proposed via the commercial software ABAQUS considering the actual geological condition and tunnelling procedures. Elasto-plasticity constitutive models are utilised for the top three strata in the finite element analysis (FEA). Constant gradients corresponding to material density are assumed for the face supporting pressure and the grouting pressure in the model. The ground contraction method is employed to simulate the shield-induced volume loss. The numerical model is firstly validated against the field measurement data considering the surface settlement. Parametric studies are performed subsequently to investigate the influence of some key tunnelling variables including cover-to-diameter ratio and face supporting pressure on the ground responses. According to the FEA, a critical cover depth of 0.55D is proposed for URUP method below which value instability and collapse of surrounding soils will be highly likely.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/tust-
dc.relation.ispartofTunnelling and Underground Space Technology-
dc.rightsPosting accepted manuscript (postprint): © <year>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.subjectURUP method-
dc.subjectFull-scale test-
dc.subjectNumerical simulation-
dc.subjectEPB-
dc.subjectCase history-
dc.titleThree-dimensional finite-element analysis on ground responses during twin-tunnel construction using the URUP method-
dc.typeArticle-
dc.identifier.emailKwok, CY: fkwok8@hku.hk-
dc.identifier.authorityKwok, CY=rp01344-
dc.identifier.doi10.1016/j.tust.2016.05.001-
dc.identifier.hkuros283399-
dc.identifier.volume58-
dc.identifier.spage133-
dc.identifier.epage146-
dc.identifier.isiWOS:000381169600011-
dc.publisher.placeUnited Kingdom-

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