Modeling added spatial variability due to soil improvement: Coupling FEM with binary random fields for seismic risk analysis

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dc.citation.journalTitleSOIL DYNAMICS AND EARTHQUAKE ENGINEERING
dc.contributor.authorMontoya-Noguera, Silvana
dc.contributor.authorLopez-Caballero, Fernando
dc.contributor.researchgroupMecánica Aplicadaspa
dc.date.accessioned2021-04-16T20:10:40Z
dc.date.available2021-04-16T20:10:40Z
dc.date.issued2018-01-01
dc.description.abstractA binary mixture homogenization model is proposed for predicting the effects on liquefaction-induced settlement after soil improvement based on the consideration of the added spatial variability between the natural and the treated soil. A 2D finite element model of an inelastic structure founded on a shallow foundation was coupled with a binary random field. Nonlinear soil behavior is used and the model is tested for different mesh size, model parameters and input motions. Historical evidence as well as physical and numerical modeling indicate that improved sites present less liquefaction and ground deformation. In most cases this improvement is modeled as homogeneous; however, in-situ measurements evidence the high level of heterogeneity in the deposit. Inherent spatial variability in the soil and the application of some soil improvement techniques such as biogrouting and Bentonite permeations will necessary introduce heterogeneity in the soil deposit shown as clusters of the treated material in the natural soil. Hence, in this study, improvement zones are regarded as a two-phase mixture that will present a nonlinear relation due to the level of complexity of seismic liquefaction and the consequent settlement in a structure. This relation is greatly affected by the mechanical behavior of the soils used and the input motion. The effect on the latter can be efficiently related to the equivalent wave period as the proposed homogenization model depends on the stiffness demand of the input motion. © 2017 Elsevier Ltdeng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=7843
dc.identifier.doi10.1016/j.soildyn.2017.10.009
dc.identifier.issn1879341X
dc.identifier.issn17949165spa
dc.identifier.otherWOS;000418967400016
dc.identifier.otherSCOPUS;2-s2.0-85033585824
dc.identifier.urihttp://hdl.handle.net/10784/29204
dc.language.isoengeng
dc.publisherElsevier Ltd
dc.publisher.departmentUniversidad EAFIT. Departamento de Ingeniería Mecánicaspa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85033585824&doi=10.1016%2fj.soildyn.2017.10.009&partnerID=40&md5=a7b7c891ba01682a17d13b5c8a1a099b
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0267-7261
dc.sourceSOIL DYNAMICS AND EARTHQUAKE ENGINEERING
dc.subject.keywordBinary mixtureseng
dc.subject.keywordBinseng
dc.subject.keywordDepositseng
dc.subject.keywordFinite element methodeng
dc.subject.keywordHomogenization methodeng
dc.subject.keywordMixtureseng
dc.subject.keywordRisk analysiseng
dc.subject.keywordRisk assessmenteng
dc.subject.keywordSeismologyeng
dc.subject.keywordSoilseng
dc.subject.keywordBinary random fieldseng
dc.subject.keywordIn-situ measurementeng
dc.subject.keywordMechanical behavioreng
dc.subject.keywordMixture homogenizationseng
dc.subject.keywordNonlinear soil behavioreng
dc.subject.keywordSeismic liquefactioneng
dc.subject.keywordSoil improvementeng
dc.subject.keywordSpatial variabilityeng
dc.subject.keywordSoil liquefactioneng
dc.subject.keywordfinite element methodeng
dc.subject.keywordground settlementeng
dc.subject.keywordin situ measurementeng
dc.subject.keywordliquefactioneng
dc.subject.keywordnumerical modeleng
dc.subject.keywordrisk assessmenteng
dc.subject.keywordseismicityeng
dc.subject.keywordsoil improvementeng
dc.subject.keywordspatial variationeng
dc.titleModeling added spatial variability due to soil improvement: Coupling FEM with binary random fields for seismic risk analysiseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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