UTN- FRC -Producción Académica de Investigación y Desarrollo - Artículos

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Author: search.filters.author.Useche Infante , Danny JoséHas files: Yes

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    Experimental Studuy of behaviour of circular footing on geogridreinforced sand.
    (Geomechanics and Geoengineering., 2019) Useche Infante , Danny José; Aiassa Martínez, Gonzalo Martín; Arrúa , Pedro Ariel; Eberhardt , Marcelo
    Load tests were carried out with a circular foundation of diameter, B = 100 mm, supported on geogrid-sand reinforced contained in a circular-steel tank with diameter of 600 mm and depth of 450 mm, to determine the increase produced in the bearing capacity by including geogrid layers in the sand. Two types of geogrid, uniaxial and biaxial, were used as reinforcement material. Besides, a parametric study was carried out to verify the effect of several factors on the behaviour of reinforced soil. The parameters considered in the study include the depth of the first geogrid layer, vertical separation between layers of geogrid, diameter of the geogrid, number of reinforcement layers, deep of the foundation, geogrid type, and relative density of the sand. Moreover, the effect of folding the edges of the geogrid layer was studied. Finally, regression models will be developed from the laboratory model test to perform an initial calculation of the bearing capacity of the reinforced sand. Results showed that the parameters studied have a significant influence on the performance of the footing in terms of bearing capacity. The proposed regression models pre sented an adequate approximation to the experimental results
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    Behavior of Rigid Circular Shallow Foundations on Geogrid-Reinforced Sand.
    (Electronic Journal of Geotechnical Engineering., 2015) Useche Infante , Danny José; Aiassa Martínez , Gonzalo Martín; Arrúa , Pedro Ariel
    This paper presents the effect of two types of geogrid inclusion on the bearing capacity of a rigid circular footing resting on sand. The improvement achieved with uniaxial and biaxial geogrids is compared. Load tests were performed for a broad series of conditions, including unreinforced cases, was tested by varying variables such as geogrid type, number of geogrid layers, depth to topmost layer of geogrid and the case when the geogrid is anchored to the test mold. The results were then analyzed to find both qualitative and quantitative relationships between the bearing capacity and the geogrid variables. The results of the investigation indicate that both, the settlement and the bearing capacity, of circular footing resting on sand, can be enhanced by the presence of geogrid layers. The improvement in stress-strain behavior of the geogrid-reinforced sand was found to be strongly dependent on the number of geogrid layers, vertical distance between the base of the foundation and the first layer of geogrid and the tensile strength of geogrid reinforcement.