Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.28927/SR.2023.013122 http://hdl.handle.net/11449/244943 |
Resumo: | The maximum shear modulus (G0) and the modulus degradation curve (G/G0 versus γ) are important information in the evaluation of the soil mechanical behavior, both for dynamic and static loads. Dynamic tests (resonant column and cyclic triaxial tests) are not routinely performed in geotechnical practice in Brazil, and the geotechnical literature on the dynamic behavior of unsaturated tropical soils is limited. This paper presents and discusses seismic dilatometer (SDMT), resonant column, and triaxial test with bender elements and internal instrumentation to determine G0 and the modulus degradation curve in an unsaturated tropical sandy soil profile. It was observed that G0 tends to increase non-linearly with soil suction and net stress (σ - ua). It was also observed that the in situ G0 values determined with the SDMT were higher than those from laboratory tests (bender elements and resonant column). The modulus degradation curves determined with resonant column were used to define the reference curve via SDMT for the studied site. Soil suction influence in shear modulus degradation curves determined with unsaturated triaxial compression tests with local instrumentation is also presented and discussed. |
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Repositório Institucional da UNESP |
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Maximum shear modulus and modulus degradation curves of an unsaturated tropical soilMaximum shear modulusModulus degradationTriaxial testBender elementsSDMTSoil suctionThe maximum shear modulus (G0) and the modulus degradation curve (G/G0 versus γ) are important information in the evaluation of the soil mechanical behavior, both for dynamic and static loads. Dynamic tests (resonant column and cyclic triaxial tests) are not routinely performed in geotechnical practice in Brazil, and the geotechnical literature on the dynamic behavior of unsaturated tropical soils is limited. This paper presents and discusses seismic dilatometer (SDMT), resonant column, and triaxial test with bender elements and internal instrumentation to determine G0 and the modulus degradation curve in an unsaturated tropical sandy soil profile. It was observed that G0 tends to increase non-linearly with soil suction and net stress (σ - ua). It was also observed that the in situ G0 values determined with the SDMT were higher than those from laboratory tests (bender elements and resonant column). The modulus degradation curves determined with resonant column were used to define the reference curve via SDMT for the studied site. Soil suction influence in shear modulus degradation curves determined with unsaturated triaxial compression tests with local instrumentation is also presented and discussed.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual Paulista, Faculdade de EngenhariaInstituto Federal de Educação, Ciência e Tecnologia de São PauloUniversidade Estadual Paulista, Faculdade de EngenhariaFAPESP: 2015/17260-0 2017/23174-5CNPq: 436478/2018-8Associação Brasileira de Mecânica dos SolosUniversidade Estadual Paulista (UNESP)Instituto Federal de Educação, Ciência e Tecnologia de São PauloFernandes, Jeferson Brito [UNESP]Rocha, Breno PadoveziGiacheti, Heraldo Luiz [UNESP]2023-07-29T11:15:04Z2023-07-29T11:15:04Z2023-04-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.28927/SR.2023.013122Soils and Rocks. Associação Brasileira de Mecânica dos Solos, v. 46, n. 2, p. -, 2023.1980-97432675-5475http://hdl.handle.net/11449/24494310.28927/SR.2023.013122S2675-54752023000200501S2675-54752023000200501.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSoils and Rocksinfo:eu-repo/semantics/openAccess2023-12-08T06:17:21Zoai:repositorio.unesp.br:11449/244943Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-08T06:17:21Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
title |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
spellingShingle |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil Fernandes, Jeferson Brito [UNESP] Maximum shear modulus Modulus degradation Triaxial test Bender elements SDMT Soil suction |
title_short |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
title_full |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
title_fullStr |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
title_full_unstemmed |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
title_sort |
Maximum shear modulus and modulus degradation curves of an unsaturated tropical soil |
author |
Fernandes, Jeferson Brito [UNESP] |
author_facet |
Fernandes, Jeferson Brito [UNESP] Rocha, Breno Padovezi Giacheti, Heraldo Luiz [UNESP] |
author_role |
author |
author2 |
Rocha, Breno Padovezi Giacheti, Heraldo Luiz [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Instituto Federal de Educação, Ciência e Tecnologia de São Paulo |
dc.contributor.author.fl_str_mv |
Fernandes, Jeferson Brito [UNESP] Rocha, Breno Padovezi Giacheti, Heraldo Luiz [UNESP] |
dc.subject.por.fl_str_mv |
Maximum shear modulus Modulus degradation Triaxial test Bender elements SDMT Soil suction |
topic |
Maximum shear modulus Modulus degradation Triaxial test Bender elements SDMT Soil suction |
description |
The maximum shear modulus (G0) and the modulus degradation curve (G/G0 versus γ) are important information in the evaluation of the soil mechanical behavior, both for dynamic and static loads. Dynamic tests (resonant column and cyclic triaxial tests) are not routinely performed in geotechnical practice in Brazil, and the geotechnical literature on the dynamic behavior of unsaturated tropical soils is limited. This paper presents and discusses seismic dilatometer (SDMT), resonant column, and triaxial test with bender elements and internal instrumentation to determine G0 and the modulus degradation curve in an unsaturated tropical sandy soil profile. It was observed that G0 tends to increase non-linearly with soil suction and net stress (σ - ua). It was also observed that the in situ G0 values determined with the SDMT were higher than those from laboratory tests (bender elements and resonant column). The modulus degradation curves determined with resonant column were used to define the reference curve via SDMT for the studied site. Soil suction influence in shear modulus degradation curves determined with unsaturated triaxial compression tests with local instrumentation is also presented and discussed. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T11:15:04Z 2023-07-29T11:15:04Z 2023-04-28 |
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.2023.013122 Soils and Rocks. Associação Brasileira de Mecânica dos Solos, v. 46, n. 2, p. -, 2023. 1980-9743 2675-5475 http://hdl.handle.net/11449/244943 10.28927/SR.2023.013122 S2675-54752023000200501 S2675-54752023000200501.pdf |
url |
http://dx.doi.org/10.28927/SR.2023.013122 http://hdl.handle.net/11449/244943 |
identifier_str_mv |
Soils and Rocks. Associação Brasileira de Mecânica dos Solos, v. 46, n. 2, p. -, 2023. 1980-9743 2675-5475 10.28927/SR.2023.013122 S2675-54752023000200501 S2675-54752023000200501.pdf |
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.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Mecânica dos Solos |
publisher.none.fl_str_mv |
Associação Brasileira de Mecânica dos Solos |
dc.source.none.fl_str_mv |
SciELO 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 |
|
_version_ |
1797789935501049856 |