Estudio del comportamiento tenso-deformacional de suelos parcialmente saturados en Cuba. Aplicaciones al cálculo de las deformaciones de las bases de las cimentaciones
Fecha
2016-07-03
Autores
López Martín, Liudys Y.
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Editor
Universidad Central “Marta Abreu” de Las Villas. Facultad de Construcciones. Departamento de Ingeniería Civil
Resumen
La necesidad de profundizar en el estudio de los suelos parcialmente saturados ha aumentado en la actualidad, analizando tendencias actuales sobre la modelación y diseño de cimentaciones superficiales apoyadas sobre estos suelos y adaptarlas a condiciones cubanas.
En este trabajo se presenta la obtención y simulación de las curvas de compresibilidad (e vs ) y de las curvas de retención de agua del suelo Ciego de Ávila. Se realiza una caracterización de los suelos Villa Clara y Ciego de Ávila, mediante el empleo de ensayos de laboratorios siguiendo las especificaciones de las normas correspondientes. La simulación de la curva de compresibilidad del suelo se realizó utilizando un modelo que parte de considerar la curva de retención del suelo y dicha curva en condiciones saturadas, obteniéndose de las mismas las succiones y los coeficientes κ (comportamiento elástico) y λ (comportamiento plástico), que nos permitieron obtener el asentamiento que ocurre en los suelos parcialmente saturados. Se obtiene la curva característica empleando el ensayo del papel de filtro, y la simulación se realizará mediante la utilización de los modelos empíricos de Van Genuchten (1980), Fredlund and Xing (1994) y Gallipoli (2003).
Se pretende transitar a través del proceso de modelación de un cimiento superficial bajo carga axial, se describen los factores que influyen en el diseño de los cimientos superficiales apoyados en suelos parcialmente saturados. Con los resultados obtenidos se estudió la influencia de la succión para el diseño y determinación de los asentamientos en suelos parcialmente saturados en Cuba.
The need for further study of the partially saturated soil has increased currently analyzing current trends about the modeling and design of shallow foundations resting on these soils and adapt to the conditions of Cuba. In this work the production and simulation curves compressibility (e vs ) and curves of soil water retention of Ciego de Avila soils is presented. A characterization of the Villa Clara and Ciego de Avila soils was conducted by using physical-mechanical following the specifications of the relevant standards. The simulation curve compressibility partially saturated soil was conducted using a model by considering the curve soil retention and curve compressibility in saturated conditions, obtaining the same suctions and coefficients κ (elastic behavior) and λ (plastic behavior) model Rojas and Alanis, allowing us to get the settlement that occurs in partially saturated soils. the characteristic curve was obtained using the assay laboratory with filter paper, and the simulation was performed using methods of Van Genuchten (1980), Fredlund and Xing (1994) and Gallipoli (2003), which are empirical models. It is intended to move through the process of modeling a surface foundation under axial load. Initially the factors that influence the design of surface foundations supported in partially saturated soils. With the results the influence of suction for the design and determination of settlements in unsaturated soils studied in Cuba.
The need for further study of the partially saturated soil has increased currently analyzing current trends about the modeling and design of shallow foundations resting on these soils and adapt to the conditions of Cuba. In this work the production and simulation curves compressibility (e vs ) and curves of soil water retention of Ciego de Avila soils is presented. A characterization of the Villa Clara and Ciego de Avila soils was conducted by using physical-mechanical following the specifications of the relevant standards. The simulation curve compressibility partially saturated soil was conducted using a model by considering the curve soil retention and curve compressibility in saturated conditions, obtaining the same suctions and coefficients κ (elastic behavior) and λ (plastic behavior) model Rojas and Alanis, allowing us to get the settlement that occurs in partially saturated soils. the characteristic curve was obtained using the assay laboratory with filter paper, and the simulation was performed using methods of Van Genuchten (1980), Fredlund and Xing (1994) and Gallipoli (2003), which are empirical models. It is intended to move through the process of modeling a surface foundation under axial load. Initially the factors that influence the design of surface foundations supported in partially saturated soils. With the results the influence of suction for the design and determination of settlements in unsaturated soils studied in Cuba.
Descripción
Palabras clave
Comportamiento Tenso-Deformacional de Suelos, Suelos Parcialmente Saturados en Cuba, Cálculo de las Deformaciones de las Bases de las Cimentaciones, Curvas de Compresibilidad, Curvas de Retención de Agua del Suelo, Ciego de Ávila, Modelos Empíricos, Behavior