Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings

Fibre reinforced concrete (FRC) is increasingly used in tunnel segmental linings constructed with tunnel boring machines. Several codes include the FRC as a structural material and specific guidelines cover the design of FRC precast segmental linings. All of these consider the traditional limit stat...

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Autores: Cugat Martí, Víctor, Pialarissi Cavalaro, Sergio Henrique|||0000-0002-9368-0898, Bairán García, Jesús Miguel|||0000-0003-2831-1479, Fuente Antequera, Albert de la|||0000-0002-8016-1677
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/192720
Acceso en línea:https://hdl.handle.net/2117/192720
https://dx.doi.org/10.1016/j.tust.2020.103500
Access Level:acceso abierto
Palabra clave:Tunnel lining
Fiber reinforced concrete
Reliability
Safety factor
Post-cracking flexural strength
Design
Túnels -- Revestiment
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Túnels i excavacions
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network_acronym_str ES
network_name_str España
repository_id_str
spelling Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental liningsCugat Martí, VíctorPialarissi Cavalaro, Sergio Henrique|||0000-0002-9368-0898Bairán García, Jesús Miguel|||0000-0003-2831-1479Fuente Antequera, Albert de la|||0000-0002-8016-1677Tunnel liningFiber reinforced concreteReliabilitySafety factorPost-cracking flexural strengthDesignTúnels -- RevestimentÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigóÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Túnels i excavacionsFibre reinforced concrete (FRC) is increasingly used in tunnel segmental linings constructed with tunnel boring machines. Several codes include the FRC as a structural material and specific guidelines cover the design of FRC precast segmental linings. All of these consider the traditional limit state format, applying partial safety factors to the loads (γL) and material strengths (γM). Often, the γM applied to the residual tensile strength of FRC is assumed the same as for concrete in compression. However, the variability in the determination of the residual tensile strength may be several times bigger than that of the compressive strength. In this context, the application of the same γM should be revised as it could lead to reliability indexes lower than the established for traditional reinforced concrete structures. The objective of this paper is to estimate safety factors for the residual flexural response of FRC used in tunnels segments, considering the variability of the material in both the material characterisation test and in the real-scale structure. After a study about the influence of the element size on the variability, an evaluation of the structural reliability of the segmental linings made with FRC is performed using the FORM method and a database of real-scale test results compiled from existing literature. Based on that, values of γM are proposed according to different failure consequences levels and relative economic costs required to increase the structural safety.The authors wish to express their gratitude to the Spanish Ministry of Economy, Industry and Competitiveness for the economic support in the scope of the project SAES (BIA2016-78742-C2-1-R).Peer ReviewedElsevier20202020-09-0120202020-07-09journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/192720https://dx.doi.org/10.1016/j.tust.2020.103500reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1927202026-05-27T15:37:01Z
dc.title.none.fl_str_mv Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
title Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
spellingShingle Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
Cugat Martí, Víctor
Tunnel lining
Fiber reinforced concrete
Reliability
Safety factor
Post-cracking flexural strength
Design
Túnels -- Revestiment
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Túnels i excavacions
title_short Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
title_full Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
title_fullStr Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
title_full_unstemmed Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
title_sort Safety format for the flexural design of tunnel fibre reinforced concrete precast segmental linings
dc.creator.none.fl_str_mv Cugat Martí, Víctor
Pialarissi Cavalaro, Sergio Henrique|||0000-0002-9368-0898
Bairán García, Jesús Miguel|||0000-0003-2831-1479
Fuente Antequera, Albert de la|||0000-0002-8016-1677
author Cugat Martí, Víctor
author_facet Cugat Martí, Víctor
Pialarissi Cavalaro, Sergio Henrique|||0000-0002-9368-0898
Bairán García, Jesús Miguel|||0000-0003-2831-1479
Fuente Antequera, Albert de la|||0000-0002-8016-1677
author_role author
author2 Pialarissi Cavalaro, Sergio Henrique|||0000-0002-9368-0898
Bairán García, Jesús Miguel|||0000-0003-2831-1479
Fuente Antequera, Albert de la|||0000-0002-8016-1677
author2_role author
author
author
dc.subject.none.fl_str_mv Tunnel lining
Fiber reinforced concrete
Reliability
Safety factor
Post-cracking flexural strength
Design
Túnels -- Revestiment
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Túnels i excavacions
topic Tunnel lining
Fiber reinforced concrete
Reliability
Safety factor
Post-cracking flexural strength
Design
Túnels -- Revestiment
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Túnels i excavacions
description Fibre reinforced concrete (FRC) is increasingly used in tunnel segmental linings constructed with tunnel boring machines. Several codes include the FRC as a structural material and specific guidelines cover the design of FRC precast segmental linings. All of these consider the traditional limit state format, applying partial safety factors to the loads (γL) and material strengths (γM). Often, the γM applied to the residual tensile strength of FRC is assumed the same as for concrete in compression. However, the variability in the determination of the residual tensile strength may be several times bigger than that of the compressive strength. In this context, the application of the same γM should be revised as it could lead to reliability indexes lower than the established for traditional reinforced concrete structures. The objective of this paper is to estimate safety factors for the residual flexural response of FRC used in tunnels segments, considering the variability of the material in both the material characterisation test and in the real-scale structure. After a study about the influence of the element size on the variability, an evaluation of the structural reliability of the segmental linings made with FRC is performed using the FORM method and a database of real-scale test results compiled from existing literature. Based on that, values of γM are proposed according to different failure consequences levels and relative economic costs required to increase the structural safety.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-09-01
2020
2020-07-09
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/192720
https://dx.doi.org/10.1016/j.tust.2020.103500
url https://hdl.handle.net/2117/192720
https://dx.doi.org/10.1016/j.tust.2020.103500
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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