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dc.contributor.authorTomobe, Harukaen
dc.contributor.authorFujisawa, Kazunorien
dc.contributor.authorMurakami, Akiraen
dc.contributor.alternative友部, 遼ja
dc.contributor.alternative藤澤, 和謙ja
dc.contributor.alternative村上, 章ja
dc.date.accessioned2022-10-03T07:03:18Z-
dc.date.available2022-10-03T07:03:18Z-
dc.date.issued2021-06-
dc.identifier.urihttp://hdl.handle.net/2433/276526-
dc.description.abstractUnderstanding mechanical interactions at the root-soil interface is essential to predict the erosion of vegetated slopes. Recently, the shear strength of vegetatedil under changing hydraulic conditions has been measured and modeled; however, root-soil interfaces have not been investigated under changing hydraulic conditions. This paper proposes (1) a novel pullout apparatus to measure the shear strength at the root-soil interface under changing suction, (2) a Mohr-Coulomb-Vilar (MCV) shear strength model of root-soil interfaces, and (3) a numerical simulation using Node-To-Segment (NTS) approach along with Finite Element Method (FEM). The pullout tests were verified using the numerical simulation, and the results showed that the combination of the MCV model and NTS/FEM approach can accurately predict the shear behavior of root-soil interfaces under changing suction. In addition, we experimentally evaluated the pullout problem of roots and showed that the present method provides reasonably predicts root-pullout problems even when the suction is changed during the pullout process. The current method, therefore, can be used for predicting root-soil interface dynamics under varying suction and soil pressure by only adding two additional parameters of the Vilar model.en
dc.language.isoeng-
dc.publisherElsevier BVen
dc.publisherThe Japanese Geotechnical Societyen
dc.rights© 2021 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.en
dc.rightsThis is an open access article under the CC BY-NC-ND license.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.subjectPull-out testsen
dc.subjectShear strengthen
dc.subjectRoot-soil interfaceen
dc.subjectSuctionen
dc.subjectMohr-Coulomb-Vilar modelen
dc.subjectNode-To-Segment approachen
dc.titleA Mohr-Coulomb-Vilar model for constitutive relationship in root-soil interface under changing suctionen
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.jtitleSoils and Foundationsen
dc.identifier.volume61-
dc.identifier.issue3-
dc.identifier.spage815-
dc.identifier.epage835-
dc.relation.doi10.1016/j.sandf.2021.03.005-
dc.textversionpublisher-
dcterms.accessRightsopen access-
datacite.awardNumber17J02383-
datacite.awardNumber20K22599-
datacite.awardNumber.urihttps://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17J02383/-
datacite.awardNumber.urihttps://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K22599/-
dc.identifier.pissn0038-0806-
dc.identifier.eissn2524-1788-
jpcoar.funderName日本学術振興会ja
jpcoar.funderName日本学術振興会ja
jpcoar.awardTitleミクロな力学特性に基づく根混じり土シミュレータの開発 --倒伏から防災まで--ja
jpcoar.awardTitle水-土-根成長練成有限要素法による農業水利施設の植生-地盤相互作用解析ja
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