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dc.contributor.authorLe Pense, Solenn
dc.contributor.authorArson, Chloé
dc.contributor.authorGatmiri, Behrouz
dc.contributor.authorPouya, Ahmad
dc.date.accessioned2014-06-13T12:38:00Z
dc.date.available2014-06-13T12:38:00Z
dc.date.issued2013-07
dc.identifier.citationLe Pense, S., Arson, C., Gatmiri, B., and Pouya, A. (2013) Simulation of the Unsaturated Excavation Damage Zone around a Tunnel Using a Fully Coupled Damage-Plasticity Model. Poromechanics V: pp. 2556-2565. doi: 10.1061/9780784412992.297en_US
dc.identifier.urihttp://hdl.handle.net/1853/51976
dc.descriptionPresented at the Fifth Biot Conference on Poromechanics, Vienna, Austria, 10-12 July, 2013
dc.descriptionCopyright © 2013 by the American Society of Civil Engineers
dc.descriptionDOI: http://dx.doi.org/10.1061/9780784412992.297
dc.description.abstractDuring tunnel excavation, stress redistribution produces plastic deformation and damage around the opening. Moreover, the surrounding soil can be either saturated or unsaturated. Suction has a significant influence on the mechanical behaviour of geomaterials. Depending on their stress state and on their moisture content, clay-based materials can exhibit either a ductile or a brittle behaviour. Plasticity leads to permanent strains and damage causes the deterioration of the soil elastic and hydraulic properties. The damage-plasticity model proposed in this work is formulated in terms of a damaged constitutive stress, defined from the principle of Bishop's hydro-mechanical stress (for unsaturated conditions), and from the principle of damaged effective stress used in Continuum Damage Mechanics. The evolution laws are obtained by using the principle of strain equivalence. This hydro-mechanical damage-plasticity model was implemented in a Finite Element code. The excavation of a tunnel is simulated at different constant suctions. The results obtained illustrate the influence of suction on the development of plastic and damaged zones.en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectTunnel excavationen_US
dc.subjectHydromechanical stressen_US
dc.subjectDamage plasticityen_US
dc.subjectContinuum damage mechanics (CDM)en_US
dc.titleSimulation of the Unsaturated Excavation Damage Zone Around a Tunnel Using A Fully Coupled Damage-Plasticity Modelen_US
dc.typePost-printen_US
dc.typeProceedingsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Civil and Environmental Engineeringen_US
dc.contributor.corporatenameUniversite´ Paris-Est, Laboratoire Navieren_US
dc.contributor.corporatenameUniversity of Tehran, Iranen_US
dc.identifier.doi10.1061/9780784412992.297
dc.embargo.termsnullen_US


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