Please use this identifier to cite or link to this item: https://doi.org/10.1061/41095(365)208
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dc.titleA new 2D failure mechanism for face stability analysis of a pressurized tunnel in spatially variable sands
dc.contributor.authorMollon, G.
dc.contributor.authorPhoon, K.K.
dc.contributor.authorDias, D.
dc.contributor.authorSoubra, A.-H.
dc.date.accessioned2014-06-19T05:48:15Z
dc.date.available2014-06-19T05:48:15Z
dc.date.issued2010
dc.identifier.citationMollon, G.,Phoon, K.K.,Dias, D.,Soubra, A.-H. (2010). A new 2D failure mechanism for face stability analysis of a pressurized tunnel in spatially variable sands. Geotechnical Special Publication (199) : 2052-2061. ScholarBank@NUS Repository. <a href="https://doi.org/10.1061/41095(365)208" target="_blank">https://doi.org/10.1061/41095(365)208</a>
dc.identifier.isbn9780784410950
dc.identifier.issn08950563
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/74035
dc.description.abstractThis paper presents a method to consider the spatial variability of the soil shear strength parameters for determining the critical collapse pressure of a pressurized tunnel face. Only the case of a cohesionless soil is considered in the analysis. The present method is based on the kinematic theorem of limit analysis. A new 2D kinematically admissible collapse mechanism whose shape depends on the spatial distribution of the soil friction angle (φ) is proposed. In this mechanism, the normality condition imposed by limit analysis is enforced everywhere along the slip surfaces of the failure mechanism. The results obtained using the present approach are presented and compared to those based on common numerical methods such as the Finite Element Method (FEM) or the Finite Difference Method (FDM). The proposed method is computationally more efficient and has significant potential for simulation studies involving random fields. © 2010 ASCE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1061/41095(365)208
dc.sourceScopus
dc.subjectFailures
dc.subjectSand, Soil type
dc.subjectShear strength
dc.subjectTunnels
dc.typeConference Paper
dc.contributor.departmentCIVIL ENGINEERING
dc.description.doi10.1061/41095(365)208
dc.description.sourcetitleGeotechnical Special Publication
dc.description.issue199
dc.description.page2052-2061
dc.description.codenGSPUE
dc.identifier.isiutNOT_IN_WOS
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