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Descripción
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| The influence of the angle of dilatancy in the ultimate bearing capacity of the rock mass is an underestimated topic. Due to the innumerable influential parameters in the mechanical behavior of the rock mass, a method or equation has not been defined to estimate in a standard way the value of the angle of dilatancy for the different types of rock masses. However, it is accepted that the value of the dilatancy angle ranges from minimum 0 ° to the maximum value equal to the instantaneous friction angle. On the other hand, the calculation of the ultimate bearing capacity of the rock mass is an important topic, being mainly focused on projects related to dams and civil works. This article presents a study about the influence of the dilatancy in the ultimate bearing capacity of the rock mass under the Hoek and Brown failure criterion, considering as limits the associative and the non-associative flow rule with the null value of dilatancy angle, for the analysis of a strip footing with self-weight and a circular footing without the self-weight. The numerical model was realized in the commercial program FLAC (Itasca). A total of 192 basic cases have been studied, resulting from the combination of four influential parameters in the ultimate bearing capacity (mo, width of the footing, GSI and UCS). These cases were calculated under four different hypotheses: strip footing with self-weight and a circular footing without the self-weight, both with the associated and non-associative flow rule, resulting in a total of 768 cases studied. | |
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Internacional
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Si |
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Nombre congreso
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XVII ECSMGE-2019 Geotechnical Engineering foundation of the future |
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Tipo de participación
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960 |
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Lugar del congreso
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Reykjavik, Iceland |
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Revisores
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Si |
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ISBN o ISSN
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978-0-7277-6067-8 |
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DOI
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Fecha inicio congreso
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01/09/2019 |
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Fecha fin congreso
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01/09/2019 |
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Desde la página
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87 |
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Hasta la página
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95 |
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Título de las actas
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Proceedings of the XVII ECSMGE-2019 Geotechnical Engineering foundation of the future |