Effects of relative column width and pile-cap elevation on local scour depth around complex piers
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://repositorio.lnec.pt:8080/jspui/handle/123456789/1007574 |
Resumo: | An experimental campaign of 25 long-duration (13–47 days) laboratory tests was carried out with three complex pier models under steady clear-water flow conditions. Each model, characterized by a different relation between the column and the pile-cap widths, Dc=Dpc, was tested for a variety of pile-cap positions relatively to the initial bed, Hc. The experimental data were used to describe the temporal evolution of the scour depth as a function of Hc=h (h = approach flow depth). The common criterion to stop experimental tests on complex piers was analyzed, and a new criterion was introduced. The equilibrium scour depth, dse, was calculated by extrapolation of data series. The results are used to evaluate the effect of Dc=Dpc and Hc=h on dse when the pile cap is above the bed (Situation 1), partially buried in the bed (Situation 2), and completely buried in the bed (Situation 3). The analysis includes the definition of Hc at which the maximum dse occurs through an equation that takes into account the Dc=Dpc ratio, the relative pile-cap thickness, T=h, and the column and pile-cap shapes. |
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Effects of relative column width and pile-cap elevation on local scour depth around complex piersLocal scourComplex pierBridge foundationsEquilibrium scour depthLaboratory tests.An experimental campaign of 25 long-duration (13–47 days) laboratory tests was carried out with three complex pier models under steady clear-water flow conditions. Each model, characterized by a different relation between the column and the pile-cap widths, Dc=Dpc, was tested for a variety of pile-cap positions relatively to the initial bed, Hc. The experimental data were used to describe the temporal evolution of the scour depth as a function of Hc=h (h = approach flow depth). The common criterion to stop experimental tests on complex piers was analyzed, and a new criterion was introduced. The equilibrium scour depth, dse, was calculated by extrapolation of data series. The results are used to evaluate the effect of Dc=Dpc and Hc=h on dse when the pile cap is above the bed (Situation 1), partially buried in the bed (Situation 2), and completely buried in the bed (Situation 3). The analysis includes the definition of Hc at which the maximum dse occurs through an equation that takes into account the Dc=Dpc ratio, the relative pile-cap thickness, T=h, and the column and pile-cap shapes.American Society of Civil Engineers2015-10-05T10:14:49Z2017-04-13T08:38:26Z2015-09-01T00:00:00Z2015-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1007574engISSN (print): 0733-9429ISSN (online): 1943-7900DOI: 10.1061/(ASCE)HY.1943-7900.0001080Castiblanco, M.Maia, R.Couto, L. T.info: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:RCAAP2024-01-13T03:03:43Zoai:localhost:123456789/1007574Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:58.423590Repositório 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 relative column width and pile-cap elevation on local scour depth around complex piers |
title |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers |
spellingShingle |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers Castiblanco, M. Local scour Complex pier Bridge foundations Equilibrium scour depth Laboratory tests. |
title_short |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers |
title_full |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers |
title_fullStr |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers |
title_full_unstemmed |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers |
title_sort |
Effects of relative column width and pile-cap elevation on local scour depth around complex piers |
author |
Castiblanco, M. |
author_facet |
Castiblanco, M. Maia, R. Couto, L. T. |
author_role |
author |
author2 |
Maia, R. Couto, L. T. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Castiblanco, M. Maia, R. Couto, L. T. |
dc.subject.por.fl_str_mv |
Local scour Complex pier Bridge foundations Equilibrium scour depth Laboratory tests. |
topic |
Local scour Complex pier Bridge foundations Equilibrium scour depth Laboratory tests. |
description |
An experimental campaign of 25 long-duration (13–47 days) laboratory tests was carried out with three complex pier models under steady clear-water flow conditions. Each model, characterized by a different relation between the column and the pile-cap widths, Dc=Dpc, was tested for a variety of pile-cap positions relatively to the initial bed, Hc. The experimental data were used to describe the temporal evolution of the scour depth as a function of Hc=h (h = approach flow depth). The common criterion to stop experimental tests on complex piers was analyzed, and a new criterion was introduced. The equilibrium scour depth, dse, was calculated by extrapolation of data series. The results are used to evaluate the effect of Dc=Dpc and Hc=h on dse when the pile cap is above the bed (Situation 1), partially buried in the bed (Situation 2), and completely buried in the bed (Situation 3). The analysis includes the definition of Hc at which the maximum dse occurs through an equation that takes into account the Dc=Dpc ratio, the relative pile-cap thickness, T=h, and the column and pile-cap shapes. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-05T10:14:49Z 2015-09-01T00:00:00Z 2015-09 2017-04-13T08:38:26Z |
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://repositorio.lnec.pt:8080/jspui/handle/123456789/1007574 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1007574 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
ISSN (print): 0733-9429 ISSN (online): 1943-7900 DOI: 10.1061/(ASCE)HY.1943-7900.0001080 |
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 |
American Society of Civil Engineers |
publisher.none.fl_str_mv |
American Society of Civil Engineers |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136874521952256 |