Micromechanical basis for shear strength of rock discontinuities

Serrano Gonzalez, Alcibiades; Olalla Marañón, Claudio y Galindo Aires, Rubén Ángel (2014). Micromechanical basis for shear strength of rock discontinuities. "International Journal of Rock Mechanics and Mining Sciences", v. 70 ; pp. 33-46. ISSN 1365-1609. https://doi.org/10.1016/j.ijrmms.2014.02.021.

Descripción

Título: Micromechanical basis for shear strength of rock discontinuities
Autor/es:
  • Serrano Gonzalez, Alcibiades
  • Olalla Marañón, Claudio
  • Galindo Aires, Rubén Ángel
Tipo de Documento: Artículo
Título de Revista/Publicación: International Journal of Rock Mechanics and Mining Sciences
Fecha: Septiembre 2014
Volumen: 70
Materias:
Palabras Clave Informales: Rock joint; Roughness; Shear strength; Theoretical model; Dilatancy
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ingeniería y Morfología del Terreno
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The theoretical basis for evaluating shear strength in rock joints is presented and used to derive an equation that governs the relationship between tangential and normal stress on the joint during situations of slippage between the joint faces. The dependent variables include geometric dilatancy, the instantaneous friction angle, and a parameter that considers joint surface roughness. The effect roughness is studied, and the aforementioned formula is used to analyse joints under different conditions. A mathematical expression is deduced that explains Barton's value for the joint roughness coefficient (JRC) according to the roughness geometry. In particular, when the Hoek and Brown failure criterion is used for a rock in the contact with the surface roughness plane, it is possible to determine the shear strength of the joint as a function of the relationship between the uniaxial compressive strength of the wall with the normal stress acting on the wall. Finally, theoretical results obtained for the geometry of a three-dimensional joint are compared with those of the Barton's formulation

Más información

ID de Registro: 36071
Identificador DC: http://oa.upm.es/36071/
Identificador OAI: oai:oa.upm.es:36071
Identificador DOI: 10.1016/j.ijrmms.2014.02.021
URL Oficial: http://www.sciencedirect.com/science/article/pii/S1365160914001002#
Depositado por: Memoria Investigacion
Depositado el: 06 Jul 2015 17:13
Ultima Modificación: 06 Jul 2015 17:13
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