Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation

Dry environments produce layers of unsaturated soils that are frequently affected by cracks and shrinkage. These two phenomena can affect the stability of geotechnical works resting on the surface of the desiccated soil layers. Two points are relevant to the study of the effect of desiccation on soi...

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Autores:
Lozada López, Catalina
Tipo de recurso:
Doctoral thesis
Fecha de publicación:
2017
Institución:
Universidad de los Andes
Repositorio:
Séneca: repositorio Uniandes
Idioma:
eng
OAI Identifier:
oai:repositorio.uniandes.edu.co:1992/7702
Acceso en línea:
http://hdl.handle.net/1992/7702
Palabra clave:
Suelos - Absorción y adsorción - Investigaciones
Permeabilidad de suelos - Investigaciones
Erosión de suelos - Investigaciones
Mecánica de suelos - Investigaciones
Ingeniería
Rights
openAccess
License
https://repositorio.uniandes.edu.co/static/pdf/aceptacion_uso_es.pdf
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network_name_str Séneca: repositorio Uniandes
repository_id_str
dc.title.es_CO.fl_str_mv Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
title Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
spellingShingle Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
Suelos - Absorción y adsorción - Investigaciones
Permeabilidad de suelos - Investigaciones
Erosión de suelos - Investigaciones
Mecánica de suelos - Investigaciones
Ingeniería
title_short Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
title_full Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
title_fullStr Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
title_full_unstemmed Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
title_sort Study of the soil atmosphere interaction and bearing capacity of a soil under desiccation
dc.creator.fl_str_mv Lozada López, Catalina
dc.contributor.advisor.none.fl_str_mv Thorel, Luc
Delage, Pierre
Jommi, Cristina
Caicedo Hormaza, Bernardo
Estrada Mejía, Nicolás
dc.contributor.author.none.fl_str_mv Lozada López, Catalina
dc.subject.keyword.es_CO.fl_str_mv Suelos - Absorción y adsorción - Investigaciones
Permeabilidad de suelos - Investigaciones
Erosión de suelos - Investigaciones
Mecánica de suelos - Investigaciones
topic Suelos - Absorción y adsorción - Investigaciones
Permeabilidad de suelos - Investigaciones
Erosión de suelos - Investigaciones
Mecánica de suelos - Investigaciones
Ingeniería
dc.subject.themes.none.fl_str_mv Ingeniería
description Dry environments produce layers of unsaturated soils that are frequently affected by cracks and shrinkage. These two phenomena can affect the stability of geotechnical works resting on the surface of the desiccated soil layers. Two points are relevant to the study of the effect of desiccation on soil layers and geotechnical structures: (i) the process of drying and its interaction with environmental variables, and (ii) the bearing capacity of soils affected by large cracks. Following this line of thinking, this thesis studies these two aspects. In the first part of this work the desiccation and cracking process of a thin layer of clay was studied experimentally using the climatic chamber at the Universidad de Los Andes. This chamber was improved to include a wind conduction system and a mechanism for heating and cooling the air in a close circuit. The evaporation tests were executed controlling air temperature, wind velocity, irradiance, and relative humidity. Tests were performed in the chamber at a field gravity of 1 g, imposing different environmental conditions and varying the thickness of the clayey soil. The second part of this thesis deals with the bearing capacity of soil affected by large cracks due to desiccation. A geotechnical centrifuge was used to model the influence of cracked soils and desiccation on the bearing capacity of shallow foundations. The reduced physical models fry to simulate the geometrical characteristics of the cracks in the Sabana de Bogotá in Colombia. A desiccated soil profile was simulated, approaching the field condition; soil models have an upper layer of over consolidated compacted soil resting on a normally consolidated layer. Models were tested at 50xg using the IFSTTAR robot which allows the use of different tools such as a cone penetrometer, a shallow foundation tool, and a spatula tool. Results show the effect of the cracks on the bearing capacity and the effect of desiccation along cracks. An analytical model is proposed to explain the experimental results. Also, the effect on the bearing capacity of the position of the load with respect to the cracks was studied
publishDate 2017
dc.date.issued.none.fl_str_mv 2017
dc.date.accessioned.none.fl_str_mv 2018-09-27T16:36:32Z
dc.date.available.none.fl_str_mv 2018-09-27T16:36:32Z
dc.type.spa.fl_str_mv Trabajo de grado - Doctorado
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dc.publisher.program.es_CO.fl_str_mv Doctorado en Ingeniería
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spelling Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.https://repositorio.uniandes.edu.co/static/pdf/aceptacion_uso_es.pdfinfo:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Thorel, Luc436aeaf1-1bab-4c32-8b31-a5c9356ad813500Delage, Pierrebbcccf3b-5bd4-445f-9d2f-5673bb0b3533500Jommi, Cristina70dc0e72-4c91-415c-8ab3-b9c0bb2957a4500Caicedo Hormaza, Bernardovirtual::12273-1Estrada Mejía, Nicolásvirtual::12274-1Lozada López, Catalina953390e4-4268-4288-8c19-02bbed6def755002018-09-27T16:36:32Z2018-09-27T16:36:32Z2017http://hdl.handle.net/1992/770210.57784/1992/7702u728989.pdfinstname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/Dry environments produce layers of unsaturated soils that are frequently affected by cracks and shrinkage. These two phenomena can affect the stability of geotechnical works resting on the surface of the desiccated soil layers. Two points are relevant to the study of the effect of desiccation on soil layers and geotechnical structures: (i) the process of drying and its interaction with environmental variables, and (ii) the bearing capacity of soils affected by large cracks. Following this line of thinking, this thesis studies these two aspects. In the first part of this work the desiccation and cracking process of a thin layer of clay was studied experimentally using the climatic chamber at the Universidad de Los Andes. This chamber was improved to include a wind conduction system and a mechanism for heating and cooling the air in a close circuit. The evaporation tests were executed controlling air temperature, wind velocity, irradiance, and relative humidity. Tests were performed in the chamber at a field gravity of 1 g, imposing different environmental conditions and varying the thickness of the clayey soil. The second part of this thesis deals with the bearing capacity of soil affected by large cracks due to desiccation. A geotechnical centrifuge was used to model the influence of cracked soils and desiccation on the bearing capacity of shallow foundations. The reduced physical models fry to simulate the geometrical characteristics of the cracks in the Sabana de Bogotá in Colombia. A desiccated soil profile was simulated, approaching the field condition; soil models have an upper layer of over consolidated compacted soil resting on a normally consolidated layer. Models were tested at 50xg using the IFSTTAR robot which allows the use of different tools such as a cone penetrometer, a shallow foundation tool, and a spatula tool. Results show the effect of the cracks on the bearing capacity and the effect of desiccation along cracks. An analytical model is proposed to explain the experimental results. Also, the effect on the bearing capacity of the position of the load with respect to the cracks was studiedDoctor en IngenieríaDoctorado142 hojasapplication/pdfengUniandesDoctorado en IngenieríaFacultad de Ingenieríainstname:Universidad de los Andesreponame:Repositorio Institucional SénecaStudy of the soil atmosphere interaction and bearing capacity of a soil under desiccationTrabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesishttp://purl.org/coar/resource_type/c_db06http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/TDSuelos - Absorción y adsorción - InvestigacionesPermeabilidad de suelos - InvestigacionesErosión de suelos - InvestigacionesMecánica de suelos - InvestigacionesIngenieríaPublicationhttps://scholar.google.es/citations?user=9Mm7xv4AAAAJvirtual::12273-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000246379virtual::12273-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0000002929virtual::12274-176fcc284-15ff-46ea-8bd7-c7f7cf3cb821virtual::12273-197f760aa-7d5b-4f4e-9b7c-2079d17ab699virtual::12274-176fcc284-15ff-46ea-8bd7-c7f7cf3cb821virtual::12273-197f760aa-7d5b-4f4e-9b7c-2079d17ab699virtual::12274-1ORIGINALu728989.pdfapplication/pdf19498740https://repositorio.uniandes.edu.co/bitstreams/e5a2ede2-6f7b-4d3b-b0bd-288d052d19f7/download24e8ba99836edd799820f959546cc373MD51TEXTu728989.pdf.txtu728989.pdf.txtExtracted texttext/plain431257https://repositorio.uniandes.edu.co/bitstreams/7eaf7437-c4b3-4d02-85ef-f1ffbf69e124/download6caf954176ab3bffdbbdcae5fdfedc6aMD54THUMBNAILu728989.pdf.jpgu728989.pdf.jpgIM Thumbnailimage/jpeg14218https://repositorio.uniandes.edu.co/bitstreams/17afea6d-96f7-4ab7-a06d-3f81a447fa80/downloadc050743d35c1f79d1c29a332637d5ce7MD551992/7702oai:repositorio.uniandes.edu.co:1992/77022024-08-26 15:25:21.134https://repositorio.uniandes.edu.co/static/pdf/aceptacion_uso_es.pdfopen.accesshttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co