Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis

The slope stability is an important topic because it presents risks of socio-economic losses caused by eventual ruptures. It is necessary to identify the site profile, as well as obtaining soil strength parameters for the slope stability analysis. This paper presents and discusses the use of the Fla...

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Autores: Rocha, Breno Padovezi, Yacoub, Jhaber Dahsan [UNESP], Fernandes, Jeferson Brito [UNESP], Rodrigues, Roger Augusto [UNESP], Giacheti, Heraldo Luiz [UNESP]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/304815
Acceso en línea:http://dx.doi.org/10.28927/SR.2023.005123
https://hdl.handle.net/11449/304815
Access Level:acceso abierto
Palabra clave:DMT
In situ tests
Site characterization
Slope stability
Suction
Unsaturated soils
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spelling Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysisDMTIn situ testsSite characterizationSlope stabilitySuctionUnsaturated soilsThe slope stability is an important topic because it presents risks of socio-economic losses caused by eventual ruptures. It is necessary to identify the site profile, as well as obtaining soil strength parameters for the slope stability analysis. This paper presents and discusses the use of the Flat Dilatometer Test (DMT) in the geotechnical site characterization for slope stability analysis in an unsaturated tropical soil site. Six DMTs were performed to define the stratigraphical profile and estimate geotechnical parameters. Shear strength parameters were determined in the laboratory using saturated and unsaturated triaxial compression as well as soil water retention curves (SWRC) to support DMT data interpretation. A commercial software was used to perform the slope stability analysis a cut slope with 6.6 m height and a gradient around 55° to illustrate the application of DMT and triaxial test data. The DMT allowed the representative site profile to be identified, as well as estimating the design parameters that compared well to those interpreted from unsaturated triaxial test data for the in-situ soil suction. The DMT can be used as logging test in the preliminary characterization of studied site specially to define the stratigraphical profile, site variability, select the regions to collect disturbed and undisturbed soil samples and as the first attempt to estimate the geotechnical design parameters via correlations. It is important to emphasize that laboratory tests on undisturbed soil samples are essential in the slope stability analysis of unsaturated tropical soil profiles.Instituto Federal de Educação Ciência e Tecnologia de São Paulo, SPUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Engenharia Departamento de Engenharia Civil e Ambiental, SPUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Engenharia Departamento de Engenharia Civil e Ambiental, SPCiência e Tecnologia de São PauloUniversidade Estadual Paulista (UNESP)2025-04-29T20:00:53Z2023-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.28927/SR.2023.005123Soils and Rocks, v. 46, n. 4, 2023.2675-54751980-9743https://hdl.handle.net/11449/30481510.28927/SR.2023.0051232-s2.0-85182498323Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSoils and Rocksinfo:eu-repo/semantics/openAccessRocha, Breno PadoveziYacoub, Jhaber Dahsan [UNESP]Fernandes, Jeferson Brito [UNESP]Rodrigues, Roger Augusto [UNESP]Giacheti, Heraldo Luiz [UNESP]2025-04-30T14:05:18Zoai:repositorio.unesp.br:11449/304815Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-04-30T14:05:18Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
title Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
spellingShingle Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
Rocha, Breno Padovezi
DMT
In situ tests
Site characterization
Slope stability
Suction
Unsaturated soils
title_short Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
title_full Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
title_fullStr Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
title_full_unstemmed Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
title_sort Geotechnical site characterization by DMT and laboratory tests on an unsaturated tropical soil site for slope stability analysis
dc.creator.none.fl_str_mv Rocha, Breno Padovezi
Yacoub, Jhaber Dahsan [UNESP]
Fernandes, Jeferson Brito [UNESP]
Rodrigues, Roger Augusto [UNESP]
Giacheti, Heraldo Luiz [UNESP]
author Rocha, Breno Padovezi
author_facet Rocha, Breno Padovezi
Yacoub, Jhaber Dahsan [UNESP]
Fernandes, Jeferson Brito [UNESP]
Rodrigues, Roger Augusto [UNESP]
Giacheti, Heraldo Luiz [UNESP]
author_role author
author2 Yacoub, Jhaber Dahsan [UNESP]
Fernandes, Jeferson Brito [UNESP]
Rodrigues, Roger Augusto [UNESP]
Giacheti, Heraldo Luiz [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ciência e Tecnologia de São Paulo
Universidade Estadual Paulista (UNESP)
dc.subject.por.fl_str_mv DMT
In situ tests
Site characterization
Slope stability
Suction
Unsaturated soils
topic DMT
In situ tests
Site characterization
Slope stability
Suction
Unsaturated soils
description The slope stability is an important topic because it presents risks of socio-economic losses caused by eventual ruptures. It is necessary to identify the site profile, as well as obtaining soil strength parameters for the slope stability analysis. This paper presents and discusses the use of the Flat Dilatometer Test (DMT) in the geotechnical site characterization for slope stability analysis in an unsaturated tropical soil site. Six DMTs were performed to define the stratigraphical profile and estimate geotechnical parameters. Shear strength parameters were determined in the laboratory using saturated and unsaturated triaxial compression as well as soil water retention curves (SWRC) to support DMT data interpretation. A commercial software was used to perform the slope stability analysis a cut slope with 6.6 m height and a gradient around 55° to illustrate the application of DMT and triaxial test data. The DMT allowed the representative site profile to be identified, as well as estimating the design parameters that compared well to those interpreted from unsaturated triaxial test data for the in-situ soil suction. The DMT can be used as logging test in the preliminary characterization of studied site specially to define the stratigraphical profile, site variability, select the regions to collect disturbed and undisturbed soil samples and as the first attempt to estimate the geotechnical design parameters via correlations. It is important to emphasize that laboratory tests on undisturbed soil samples are essential in the slope stability analysis of unsaturated tropical soil profiles.
publishDate 2023
dc.date.none.fl_str_mv 2023-10-01
2025-04-29T20:00:53Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.28927/SR.2023.005123
Soils and Rocks, v. 46, n. 4, 2023.
2675-5475
1980-9743
https://hdl.handle.net/11449/304815
10.28927/SR.2023.005123
2-s2.0-85182498323
url http://dx.doi.org/10.28927/SR.2023.005123
https://hdl.handle.net/11449/304815
identifier_str_mv Soils and Rocks, v. 46, n. 4, 2023.
2675-5475
1980-9743
10.28927/SR.2023.005123
2-s2.0-85182498323
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Soils and Rocks
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
_version_ 1853671852339101696
score 15.301603

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