Numerical analysis of cone penetration in clay

This work addresses the deep penetration of structures in clays; particularly the Cone penetration test. CPT is one of the most widely used in situ method to characterize soil properties. A large number of correlations have been obtained using a multitude of techniques; however, there is still a lar...

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Detalles Bibliográficos
Autor: Monforte Vila, Lluís
Tipo de recurso: tesis de maestría
Fecha de publicación:2014
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:2099.1/24353
Acceso en línea:https://hdl.handle.net/2099.1/24353
Access Level:acceso abierto
Palabra clave:Soil mechanics
Mecànica dels sòls
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
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spelling Numerical analysis of cone penetration in clayMonforte Vila, LluísSoil mechanicsMecànica dels sòlsÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòlsThis work addresses the deep penetration of structures in clays; particularly the Cone penetration test. CPT is one of the most widely used in situ method to characterize soil properties. A large number of correlations have been obtained using a multitude of techniques; however, there is still a large spread between the proposals. The research has been carried out by large deformation calculations employing the Particle Finite Element method. In this method, the domain is discretized with a set of particles; the interaction between them is computed in a nite element mesh with low order elements and a lagrangian description of the domain. This mesh is created frequently; adaptive remeshing strategies and techniques to recover the boundary are used. In this work, an explicit integration scheme for hyperelastic-based nite strains elasto-plasticity is proposed. One step update equations are obtained from the large deformation multiplicative elasto-plasticity theory, where an exponential variation of the plastic deformation gradient is assumed. In addition, the material tangent matrix is presented and has the same formal structure as the usual small strains elastoplastic tangent matrix. Routines to alleviate the main drawbacks of explicit methods are outlined, suh as a yield drift correction scheme and an adaptive substepping method. Several examples of typical geotechnical tests are presented, showing the robustness and accuracy of the proposal. Results of the simulation of the cone penetration in undrained clay are reported. A parametric study in total stresses is carried out for materials obeying a Tresca yield criterion. The variables investigated are the rigidity index and the roughness at the interface of the soil and the structure. Details on the stress state and the incremental displacements pro les are presented. Finally, the drained penetration on soils obeing a Modi ed Cam Clay model elasto-plastic behavior is assessed and the stress state and the stress path are commented.Universitat Politècnica de CatalunyaGens Solé, AntonioArroyo Álvarez de Toledo, MarcosCarbonell Puigbó, Josep Maria20142014-07-1020142014-12-27master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2099.1/24353reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-ShareAlike 3.0 Spainhttp://creativecommons.org/licenses/by-nc-sa/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2099.1/243532026-05-27T15:37:01Z
dc.title.none.fl_str_mv Numerical analysis of cone penetration in clay
title Numerical analysis of cone penetration in clay
spellingShingle Numerical analysis of cone penetration in clay
Monforte Vila, Lluís
Soil mechanics
Mecànica dels sòls
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
title_short Numerical analysis of cone penetration in clay
title_full Numerical analysis of cone penetration in clay
title_fullStr Numerical analysis of cone penetration in clay
title_full_unstemmed Numerical analysis of cone penetration in clay
title_sort Numerical analysis of cone penetration in clay
dc.creator.none.fl_str_mv Monforte Vila, Lluís
author Monforte Vila, Lluís
author_facet Monforte Vila, Lluís
author_role author
dc.contributor.none.fl_str_mv Gens Solé, Antonio
Arroyo Álvarez de Toledo, Marcos
Carbonell Puigbó, Josep Maria
dc.subject.none.fl_str_mv Soil mechanics
Mecànica dels sòls
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
topic Soil mechanics
Mecànica dels sòls
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
description This work addresses the deep penetration of structures in clays; particularly the Cone penetration test. CPT is one of the most widely used in situ method to characterize soil properties. A large number of correlations have been obtained using a multitude of techniques; however, there is still a large spread between the proposals. The research has been carried out by large deformation calculations employing the Particle Finite Element method. In this method, the domain is discretized with a set of particles; the interaction between them is computed in a nite element mesh with low order elements and a lagrangian description of the domain. This mesh is created frequently; adaptive remeshing strategies and techniques to recover the boundary are used. In this work, an explicit integration scheme for hyperelastic-based nite strains elasto-plasticity is proposed. One step update equations are obtained from the large deformation multiplicative elasto-plasticity theory, where an exponential variation of the plastic deformation gradient is assumed. In addition, the material tangent matrix is presented and has the same formal structure as the usual small strains elastoplastic tangent matrix. Routines to alleviate the main drawbacks of explicit methods are outlined, suh as a yield drift correction scheme and an adaptive substepping method. Several examples of typical geotechnical tests are presented, showing the robustness and accuracy of the proposal. Results of the simulation of the cone penetration in undrained clay are reported. A parametric study in total stresses is carried out for materials obeying a Tresca yield criterion. The variables investigated are the rigidity index and the roughness at the interface of the soil and the structure. Details on the stress state and the incremental displacements pro les are presented. Finally, the drained penetration on soils obeing a Modi ed Cam Clay model elasto-plastic behavior is assessed and the stress state and the stress path are commented.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-07-10
2014
2014-12-27
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2099.1/24353
url https://hdl.handle.net/2099.1/24353
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-ShareAlike 3.0 Spain
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
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-ShareAlike 3.0 Spain
http://creativecommons.org/licenses/by-nc-sa/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
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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