Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas

Detalhes bibliográficos
Autor(a) principal: Paulo José Rocha de Albuquerque
Data de Publicação: 2011
Outros Autores: Faiçal Massad, António Viana da Fonseca, David de Carvalho, Jaime Santos, Elisabete Costa Esteves
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/10216/65864
Resumo: This paper reviews the behavior of three types of piles (bored, CFA and Omega piles), installed in the experimental site of Unicamp (State University of Campinas). Unicamp subsoil is characterized by non-saturated diabasic soil, lateritic in its surface layer. Extensive data from geotechnical investigation is presented, expressed in parameters derived both from in situ and laboratory tests. Static load tests with electrical extensometers were performed along the depth of instrumented piles. It was observed that most of the loads applied were transferred by lateral friction. An analysis of load transfer functions was made, which displayed a very good definition of both shaft friction and tip interaction, namely the ultimate resistance. The average maximum unit shaft friction resistance of the piles was 41 kPa, 58 kPa and 86 kPa for bored, CFA and Omega piles, respectively. Maximum tip reaction was 87 kPa, 491 kPa and 1665 kPa, for bored, CFA and Omega piles, respectively. This paper also emphasizes the relevance of extracting each pile after completion of the test in order to inspect the pile facies and characteristics. This enabled checking the shape of tips and size of shafts. Part 2 of this paper will review the tests performed at the Experimental Field of FEUP (Faculty of Engineering of the University of Porto/Portugal).
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spelling Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of CampinasGeotecnia, Engenharia civilGeotechnics, Civil engineeringThis paper reviews the behavior of three types of piles (bored, CFA and Omega piles), installed in the experimental site of Unicamp (State University of Campinas). Unicamp subsoil is characterized by non-saturated diabasic soil, lateritic in its surface layer. Extensive data from geotechnical investigation is presented, expressed in parameters derived both from in situ and laboratory tests. Static load tests with electrical extensometers were performed along the depth of instrumented piles. It was observed that most of the loads applied were transferred by lateral friction. An analysis of load transfer functions was made, which displayed a very good definition of both shaft friction and tip interaction, namely the ultimate resistance. The average maximum unit shaft friction resistance of the piles was 41 kPa, 58 kPa and 86 kPa for bored, CFA and Omega piles, respectively. Maximum tip reaction was 87 kPa, 491 kPa and 1665 kPa, for bored, CFA and Omega piles, respectively. This paper also emphasizes the relevance of extracting each pile after completion of the test in order to inspect the pile facies and characteristics. This enabled checking the shape of tips and size of shafts. Part 2 of this paper will review the tests performed at the Experimental Field of FEUP (Faculty of Engineering of the University of Porto/Portugal).20112011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/65864eng1980-9743Paulo José Rocha de AlbuquerqueFaiçal MassadAntónio Viana da FonsecaDavid de CarvalhoJaime SantosElisabete Costa Estevesinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-29T15:45:20Zoai:repositorio-aberto.up.pt:10216/65864Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:31:17.456209Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
title Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
spellingShingle Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
Paulo José Rocha de Albuquerque
Geotecnia, Engenharia civil
Geotechnics, Civil engineering
title_short Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
title_full Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
title_fullStr Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
title_full_unstemmed Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
title_sort Effects of the construction method on pile performance: evaluation by instrumentation - part 1: experimental site at the University of Campinas
author Paulo José Rocha de Albuquerque
author_facet Paulo José Rocha de Albuquerque
Faiçal Massad
António Viana da Fonseca
David de Carvalho
Jaime Santos
Elisabete Costa Esteves
author_role author
author2 Faiçal Massad
António Viana da Fonseca
David de Carvalho
Jaime Santos
Elisabete Costa Esteves
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Paulo José Rocha de Albuquerque
Faiçal Massad
António Viana da Fonseca
David de Carvalho
Jaime Santos
Elisabete Costa Esteves
dc.subject.por.fl_str_mv Geotecnia, Engenharia civil
Geotechnics, Civil engineering
topic Geotecnia, Engenharia civil
Geotechnics, Civil engineering
description This paper reviews the behavior of three types of piles (bored, CFA and Omega piles), installed in the experimental site of Unicamp (State University of Campinas). Unicamp subsoil is characterized by non-saturated diabasic soil, lateritic in its surface layer. Extensive data from geotechnical investigation is presented, expressed in parameters derived both from in situ and laboratory tests. Static load tests with electrical extensometers were performed along the depth of instrumented piles. It was observed that most of the loads applied were transferred by lateral friction. An analysis of load transfer functions was made, which displayed a very good definition of both shaft friction and tip interaction, namely the ultimate resistance. The average maximum unit shaft friction resistance of the piles was 41 kPa, 58 kPa and 86 kPa for bored, CFA and Omega piles, respectively. Maximum tip reaction was 87 kPa, 491 kPa and 1665 kPa, for bored, CFA and Omega piles, respectively. This paper also emphasizes the relevance of extracting each pile after completion of the test in order to inspect the pile facies and characteristics. This enabled checking the shape of tips and size of shafts. Part 2 of this paper will review the tests performed at the Experimental Field of FEUP (Faculty of Engineering of the University of Porto/Portugal).
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-01-01T00:00:00Z
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