Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction
In this dissertation, the behavior of geosynthetic reinforced embankments constructed on soft cohesive foundations under undrained and partially drained conditions is examined by conducting a rigorous numerical analysis using the finite element method for some particular case studies. Special attent...
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Instituto Tecnológico de Aeronáutica
2013
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ndltd-IBICT-oai-agregador.ibict.br.BDTD_ITA-oai-ita.br-27802019-01-22T03:13:53Z Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction Edwin Fernando Ruiz Blanco Delma de Mattos Vidal Paulo Scarano Hemsi Aterros Solos Geossintéticos Mecânica dos solos Método de elementos finitos Engenharia geotécnica Engenharia civil In this dissertation, the behavior of geosynthetic reinforced embankments constructed on soft cohesive foundations under undrained and partially drained conditions is examined by conducting a rigorous numerical analysis using the finite element method for some particular case studies. Special attention is given to the mobilized strains in the geosynthetic reinforcement at embankment failure, short and long-term working conditions state and during staged construction considering the influence of the time-dependency of the system in terms of construction rate, excess pore pressure dissipation and viscous deformations in the soil foundation (i.e., creep). The effects of reinforcement stiffness and adopted constitutive model are also investigated. The obtained results highlight the importance of assessing the allowable compatible reinforcement strain at failure and taking into account this soil-reinforcement interaction. It is illustrated the significant combined influence of consolidation process and soft soil creep deformation on the numerically observed embankment performance at working conditions, particularly in terms of mobilized reinforcements strains. Finally, an approximate approach for studying numerically staged constructed embankments is presented, pointing out the adequate definitions of Limit States for the considered stages and the effects of time in the embankment behavior. 2013-07-12 info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/masterThesis http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2780 eng info:eu-repo/semantics/openAccess application/pdf Instituto Tecnológico de Aeronáutica reponame:Biblioteca Digital de Teses e Dissertações do ITA instname:Instituto Tecnológico de Aeronáutica instacron:ITA |
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Aterros Solos Geossintéticos Mecânica dos solos Método de elementos finitos Engenharia geotécnica Engenharia civil |
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Aterros Solos Geossintéticos Mecânica dos solos Método de elementos finitos Engenharia geotécnica Engenharia civil Edwin Fernando Ruiz Blanco Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
description |
In this dissertation, the behavior of geosynthetic reinforced embankments constructed on soft cohesive foundations under undrained and partially drained conditions is examined by conducting a rigorous numerical analysis using the finite element method for some particular case studies. Special attention is given to the mobilized strains in the geosynthetic reinforcement at embankment failure, short and long-term working conditions state and during staged construction considering the influence of the time-dependency of the system in terms of construction rate, excess pore pressure dissipation and viscous deformations in the soil foundation (i.e., creep). The effects of reinforcement stiffness and adopted constitutive model are also investigated. The obtained results highlight the importance of assessing the allowable compatible reinforcement strain at failure and taking into account this soil-reinforcement interaction. It is illustrated the significant combined influence of consolidation process and soft soil creep deformation on the numerically observed embankment performance at working conditions, particularly in terms of mobilized reinforcements strains. Finally, an approximate approach for studying numerically staged constructed embankments is presented, pointing out the adequate definitions of Limit States for the considered stages and the effects of time in the embankment behavior. |
author2 |
Delma de Mattos Vidal |
author_facet |
Delma de Mattos Vidal Edwin Fernando Ruiz Blanco |
author |
Edwin Fernando Ruiz Blanco |
author_sort |
Edwin Fernando Ruiz Blanco |
title |
Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
title_short |
Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
title_full |
Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
title_fullStr |
Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
title_full_unstemmed |
Geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
title_sort |
geosynthetic-reinforced embankments on soft soils : numerical analysis of the strain mobilization in the reinforcement at failure, service condition and staged construction |
publisher |
Instituto Tecnológico de Aeronáutica |
publishDate |
2013 |
url |
http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2780 |
work_keys_str_mv |
AT edwinfernandoruizblanco geosyntheticreinforcedembankmentsonsoftsoilsnumericalanalysisofthestrainmobilizationinthereinforcementatfailureserviceconditionandstagedconstruction |
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1718961548371689472 |