Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T)
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/18759 |
Resumo: | The major problem on geotechnical work is to ensure that no settlements occur during the life cycle of the construction. This involves proper design of foundations and their bearing capacity. The Brazilian standard for design and execution of foundations, ABNT (2010) NBR 6122 imposes the utilization of field tests when designing building foundations. The Standard Penetration Test, SPT, ABNT (2001) NBR 6484, is still the most common in-situ test for those purposes. Ranzini (1988) suggested supplementing the conventional SPT with the measurement of the torque (SPT-T) required to turn the split spoon after driving, in order to provide a ‘static’ component to a ‘dynamic’ test. The adhesion between the soil and the sampler, obtained by the torque measurement, could be used to calculate the lateral skin friction of piles. This paper describes the SPT-T procedure including both a supplementary equipment and practical aspects. Also it presents an accurate torque measurement, a prediction method to calculate the bearing capacity of piles used in building foundations using the SPT-T test and a comparison between the estimated bearing capacities of building foundations with instrumented load tests in order to validate the method. |
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Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T)soil characterizationfoundation designSPTtorque measurementload testsGeotécnicaThe major problem on geotechnical work is to ensure that no settlements occur during the life cycle of the construction. This involves proper design of foundations and their bearing capacity. The Brazilian standard for design and execution of foundations, ABNT (2010) NBR 6122 imposes the utilization of field tests when designing building foundations. The Standard Penetration Test, SPT, ABNT (2001) NBR 6484, is still the most common in-situ test for those purposes. Ranzini (1988) suggested supplementing the conventional SPT with the measurement of the torque (SPT-T) required to turn the split spoon after driving, in order to provide a ‘static’ component to a ‘dynamic’ test. The adhesion between the soil and the sampler, obtained by the torque measurement, could be used to calculate the lateral skin friction of piles. This paper describes the SPT-T procedure including both a supplementary equipment and practical aspects. Also it presents an accurate torque measurement, a prediction method to calculate the bearing capacity of piles used in building foundations using the SPT-T test and a comparison between the estimated bearing capacities of building foundations with instrumented load tests in order to validate the method. Universidade Estadual De Maringá2014-09-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionEnsaio Geotécnicoapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/1875910.4025/actascitechnol.v36i4.18759Acta Scientiarum. Technology; Vol 36 No 4 (2014); 617-621Acta Scientiarum. Technology; v. 36 n. 4 (2014); 617-6211806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/18759/pdf_32Peixoto, Anna S. P.Carvalho, David deinfo:eu-repo/semantics/openAccess2014-10-29T09:50:03Zoai:periodicos.uem.br/ojs:article/18759Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2014-10-29T09:50:03Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
title |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
spellingShingle |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) Peixoto, Anna S. P. soil characterization foundation design SPT torque measurement load tests Geotécnica |
title_short |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
title_full |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
title_fullStr |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
title_full_unstemmed |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
title_sort |
Determination of soil properties from standard penetration test complemented by torque measurement (SPT-T) |
author |
Peixoto, Anna S. P. |
author_facet |
Peixoto, Anna S. P. Carvalho, David de |
author_role |
author |
author2 |
Carvalho, David de |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Peixoto, Anna S. P. Carvalho, David de |
dc.subject.por.fl_str_mv |
soil characterization foundation design SPT torque measurement load tests Geotécnica |
topic |
soil characterization foundation design SPT torque measurement load tests Geotécnica |
description |
The major problem on geotechnical work is to ensure that no settlements occur during the life cycle of the construction. This involves proper design of foundations and their bearing capacity. The Brazilian standard for design and execution of foundations, ABNT (2010) NBR 6122 imposes the utilization of field tests when designing building foundations. The Standard Penetration Test, SPT, ABNT (2001) NBR 6484, is still the most common in-situ test for those purposes. Ranzini (1988) suggested supplementing the conventional SPT with the measurement of the torque (SPT-T) required to turn the split spoon after driving, in order to provide a ‘static’ component to a ‘dynamic’ test. The adhesion between the soil and the sampler, obtained by the torque measurement, could be used to calculate the lateral skin friction of piles. This paper describes the SPT-T procedure including both a supplementary equipment and practical aspects. Also it presents an accurate torque measurement, a prediction method to calculate the bearing capacity of piles used in building foundations using the SPT-T test and a comparison between the estimated bearing capacities of building foundations with instrumented load tests in order to validate the method. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-12 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Ensaio Geotécnico |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/18759 10.4025/actascitechnol.v36i4.18759 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/18759 |
identifier_str_mv |
10.4025/actascitechnol.v36i4.18759 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/18759/pdf_32 |
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 |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 36 No 4 (2014); 617-621 Acta Scientiarum. Technology; v. 36 n. 4 (2014); 617-621 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
_version_ |
1799315335038369792 |