Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses

This paper aims to study the bearing capacity of a shallow foundation on rock mass, considering the most usual bridge footing width and adopting a Hoek–Brown material. The dimension of the foundation has been shown to be very significant in soils with linear failure criteria (Mohr–Coulomb envelope),...

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Authors: Alencar, Ana, Galindo, Rubén, Olalla Marañón, Claudio, Melentijevic Devetakovic, Svetlana
Format: article
Publication Date:2021
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/87584
Online Access:https://hdl.handle.net/20.500.14352/87584
Access Level:Open access
Keyword:624.042.1
bearing capacity
finite difference method
bridge foundation
shallow foundation
Hoek–Brown failure criterion
Geodinámica
3305.10 Cimientos
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spelling Assessment of the Bearing Capacity of Bridge Foundation on Rock MassesAlencar, AnaGalindo, RubénOlalla Marañón, ClaudioMelentijevic Devetakovic, Svetlana624.042.1bearing capacityfinite difference methodbridge foundationshallow foundationHoek–Brown failure criterionGeodinámica3305.10 CimientosThis paper aims to study the bearing capacity of a shallow foundation on rock mass, considering the most usual bridge footing width and adopting a Hoek–Brown material. The dimension of the foundation has been shown to be very significant in soils with linear failure criteria (Mohr–Coulomb envelope), and its study is necessary in the case of non-linear failure criteria, typical of rock masses. Analytical solutions do not allow incorporating this effect. A parametric study by a finite difference method was carried out, studying a wide variety of rock mass through sensitivity analysis of three geotechnical parameters: geological origin of the rock mass (mi), uniaxial compressive strength, and geological strength index. The results obtained by the numerical solution for the Hoek–Brown failure criterion were compared with the analytical results by adopting the classical hypotheses of plane strain conditions, associated flow rule, and weightless rock mass. The variation of the numerical bearing capacity due to the consideration of the self-weight of the rock mass was also analyzed since its influence is conditioned by the volume of ground mobilized and therefore by the width of the foundation. Considering the similarities observed between the numerical and analytical results, a correlation factor function of the self-weight is proposed. It can be used in conjunction with the analytical method, to estimate in a semi-analytical way the bearing capacity of a bridge foundation.MDPIUniversidad Complutense de Madrid20212021-12-1720212021-12-17journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/87584reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/875842026-06-02T12:44:21Z
dc.title.none.fl_str_mv Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
title Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
spellingShingle Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
Alencar, Ana
624.042.1
bearing capacity
finite difference method
bridge foundation
shallow foundation
Hoek–Brown failure criterion
Geodinámica
3305.10 Cimientos
title_short Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
title_full Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
title_fullStr Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
title_full_unstemmed Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
title_sort Assessment of the Bearing Capacity of Bridge Foundation on Rock Masses
dc.creator.none.fl_str_mv Alencar, Ana
Galindo, Rubén
Olalla Marañón, Claudio
Melentijevic Devetakovic, Svetlana
author Alencar, Ana
author_facet Alencar, Ana
Galindo, Rubén
Olalla Marañón, Claudio
Melentijevic Devetakovic, Svetlana
author_role author
author2 Galindo, Rubén
Olalla Marañón, Claudio
Melentijevic Devetakovic, Svetlana
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 624.042.1
bearing capacity
finite difference method
bridge foundation
shallow foundation
Hoek–Brown failure criterion
Geodinámica
3305.10 Cimientos
topic 624.042.1
bearing capacity
finite difference method
bridge foundation
shallow foundation
Hoek–Brown failure criterion
Geodinámica
3305.10 Cimientos
description This paper aims to study the bearing capacity of a shallow foundation on rock mass, considering the most usual bridge footing width and adopting a Hoek–Brown material. The dimension of the foundation has been shown to be very significant in soils with linear failure criteria (Mohr–Coulomb envelope), and its study is necessary in the case of non-linear failure criteria, typical of rock masses. Analytical solutions do not allow incorporating this effect. A parametric study by a finite difference method was carried out, studying a wide variety of rock mass through sensitivity analysis of three geotechnical parameters: geological origin of the rock mass (mi), uniaxial compressive strength, and geological strength index. The results obtained by the numerical solution for the Hoek–Brown failure criterion were compared with the analytical results by adopting the classical hypotheses of plane strain conditions, associated flow rule, and weightless rock mass. The variation of the numerical bearing capacity due to the consideration of the self-weight of the rock mass was also analyzed since its influence is conditioned by the volume of ground mobilized and therefore by the width of the foundation. Considering the similarities observed between the numerical and analytical results, a correlation factor function of the self-weight is proposed. It can be used in conjunction with the analytical method, to estimate in a semi-analytical way the bearing capacity of a bridge foundation.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-12-17
2021
2021-12-17
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/87584
url https://hdl.handle.net/20.500.14352/87584
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 4.0 International
http://creativecommons.org/licenses/by/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 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.228081

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