Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/30541 |
Resumo: | Foundation engineering has continually sought to understand the behavior of piles subjected to loads and their influence on the overall structural behavior. Recently, more load tests are being performed in construction due to the recommendations of the NBR6122/2010 Brazilian code. The available literature offers few reports on pile behavior in a faulty foundation. Therefore, the present study assessed the behavior of a single pile with and without a defect: 5 m long, small-diameter ( = 0.25 m) bored piles were embedded in diabase soil (porous, lateritic and unsaturated) at Experimental Site II (Unicamp). The piles behavior were compared by laboratory tests, numerical analysis using the finite element software LCPC Cesar v.4.07 and experimental results from slow maintained load (SML) tests. Strain gauge instruments were installed at the top and tip of each pile. As predicted by the numerical analyses, when subjected to the first stage of the pile load test, the defective region of the pile failed structurally; however, the pile was still able to resist or “absorb” loading. Factors related to the loading ratio of the foundation, the total and differential displacements and the rotation of the top block were examined. The results obtained in the two analyses (numerical and in situ) were satisfactory and showed significant agreement, providing greater understanding of the complex behavior of this foundation system |
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Albuquerque, Paulo José Rocha deGarcia, Jean RodrigoFreitas Neto, Osvaldo deCunha, Renato Pinto daSantos Júnior, Olavo Francisco dos2020-11-09T18:15:18Z2020-11-09T18:15:18Z2017-05ALBUQUERQUE, P. J. R. de; GARCIA, J. R.; FREITAS NETO, O.; CUNHA, R.P. da; SANTOS JUNIOR, O. F. dos. Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression. Soils & Rocks, v. 40, p. 109-121, 2017. Disponível em: https://www.soilsandrocks.com/site/. Acesso em: 27 out. 2020. DOI: 10.28927/SR.40210910.28927/SR.402109https://repositorio.ufrn.br/handle/123456789/30541Brazilian Association for Soil Mechanics and Geotechnical EngineeringDefective pileInstrumented pilesLoad testBored pileBehavioral evaluation of small-diameter defective and intact bored piles subjected to axial compressioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFoundation engineering has continually sought to understand the behavior of piles subjected to loads and their influence on the overall structural behavior. Recently, more load tests are being performed in construction due to the recommendations of the NBR6122/2010 Brazilian code. The available literature offers few reports on pile behavior in a faulty foundation. Therefore, the present study assessed the behavior of a single pile with and without a defect: 5 m long, small-diameter ( = 0.25 m) bored piles were embedded in diabase soil (porous, lateritic and unsaturated) at Experimental Site II (Unicamp). The piles behavior were compared by laboratory tests, numerical analysis using the finite element software LCPC Cesar v.4.07 and experimental results from slow maintained load (SML) tests. Strain gauge instruments were installed at the top and tip of each pile. As predicted by the numerical analyses, when subjected to the first stage of the pile load test, the defective region of the pile failed structurally; however, the pile was still able to resist or “absorb” loading. Factors related to the loading ratio of the foundation, the total and differential displacements and the rotation of the top block were examined. The results obtained in the two analyses (numerical and in situ) were satisfactory and showed significant agreement, providing greater understanding of the complex behavior of this foundation systemengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNinfo:eu-repo/semantics/openAccessORIGINALBehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdfBehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdfapplication/pdf8968354https://repositorio.ufrn.br/bitstream/123456789/30541/1/BehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdfb759d8197fffc051089e674d1a6c7c2dMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/30541/2/license.txte9597aa2854d128fd968be5edc8a28d9MD52TEXTBehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdf.txtBehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdf.txtExtracted texttext/plain42983https://repositorio.ufrn.br/bitstream/123456789/30541/3/BehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdf.txta7c58fb02cb86002c39ea90492878dc2MD53THUMBNAILBehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdf.jpgBehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdf.jpgGenerated Thumbnailimage/jpeg1737https://repositorio.ufrn.br/bitstream/123456789/30541/4/BehavioralEvaluationSmall-Diameter_SantosJunior_2017.pdf.jpge7827d8c3644c104cb4d9816c34fa4a0MD54123456789/305412020-11-15 05:07:02.929oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2020-11-15T08:07:02Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
title |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
spellingShingle |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression Albuquerque, Paulo José Rocha de Defective pile Instrumented piles Load test Bored pile |
title_short |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
title_full |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
title_fullStr |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
title_full_unstemmed |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
title_sort |
Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression |
author |
Albuquerque, Paulo José Rocha de |
author_facet |
Albuquerque, Paulo José Rocha de Garcia, Jean Rodrigo Freitas Neto, Osvaldo de Cunha, Renato Pinto da Santos Júnior, Olavo Francisco dos |
author_role |
author |
author2 |
Garcia, Jean Rodrigo Freitas Neto, Osvaldo de Cunha, Renato Pinto da Santos Júnior, Olavo Francisco dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Albuquerque, Paulo José Rocha de Garcia, Jean Rodrigo Freitas Neto, Osvaldo de Cunha, Renato Pinto da Santos Júnior, Olavo Francisco dos |
dc.subject.por.fl_str_mv |
Defective pile Instrumented piles Load test Bored pile |
topic |
Defective pile Instrumented piles Load test Bored pile |
description |
Foundation engineering has continually sought to understand the behavior of piles subjected to loads and their influence on the overall structural behavior. Recently, more load tests are being performed in construction due to the recommendations of the NBR6122/2010 Brazilian code. The available literature offers few reports on pile behavior in a faulty foundation. Therefore, the present study assessed the behavior of a single pile with and without a defect: 5 m long, small-diameter ( = 0.25 m) bored piles were embedded in diabase soil (porous, lateritic and unsaturated) at Experimental Site II (Unicamp). The piles behavior were compared by laboratory tests, numerical analysis using the finite element software LCPC Cesar v.4.07 and experimental results from slow maintained load (SML) tests. Strain gauge instruments were installed at the top and tip of each pile. As predicted by the numerical analyses, when subjected to the first stage of the pile load test, the defective region of the pile failed structurally; however, the pile was still able to resist or “absorb” loading. Factors related to the loading ratio of the foundation, the total and differential displacements and the rotation of the top block were examined. The results obtained in the two analyses (numerical and in situ) were satisfactory and showed significant agreement, providing greater understanding of the complex behavior of this foundation system |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-05 |
dc.date.accessioned.fl_str_mv |
2020-11-09T18:15:18Z |
dc.date.available.fl_str_mv |
2020-11-09T18:15:18Z |
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.citation.fl_str_mv |
ALBUQUERQUE, P. J. R. de; GARCIA, J. R.; FREITAS NETO, O.; CUNHA, R.P. da; SANTOS JUNIOR, O. F. dos. Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression. Soils & Rocks, v. 40, p. 109-121, 2017. Disponível em: https://www.soilsandrocks.com/site/. Acesso em: 27 out. 2020. DOI: 10.28927/SR.402109 |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/30541 |
dc.identifier.issn.none.fl_str_mv |
10.28927/SR.402109 |
identifier_str_mv |
ALBUQUERQUE, P. J. R. de; GARCIA, J. R.; FREITAS NETO, O.; CUNHA, R.P. da; SANTOS JUNIOR, O. F. dos. Behavioral evaluation of small-diameter defective and intact bored piles subjected to axial compression. Soils & Rocks, v. 40, p. 109-121, 2017. Disponível em: https://www.soilsandrocks.com/site/. Acesso em: 27 out. 2020. DOI: 10.28927/SR.402109 10.28927/SR.402109 |
url |
https://repositorio.ufrn.br/handle/123456789/30541 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Brazilian Association for Soil Mechanics and Geotechnical Engineering |
publisher.none.fl_str_mv |
Brazilian Association for Soil Mechanics and Geotechnical Engineering |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
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UFRN |
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Repositório Institucional da UFRN |
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