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Modelling the shear behaviour of rock joints with asperity damage under constant normal stiffness

Journal Article


Abstract


  • The shear behaviour of a rough rock joint depends largely on the surface properties of the joint, as well as the boundary conditions applied across the joint interface. This paper proposes a new analytical model to describe the complete shear behaviour of rough joints under constant normal stiffness (CNS) boundary conditions by incorporating the effect of damage to asperities. In particular, the effects of initial normal stress levels and joint surface roughness on the shear behaviour of joints under CNS conditions were studied, and the analytical model was validated through experimental results. Finally, the practical application of the model to a jointed rock slope stability analysis is presented.

Publication Date


  • 2015

Citation


  • Indraratna, B., Thirukumaran, S., Brown, E. T. & Zhu , S. (2015). Modelling the shear behaviour of rock joints with asperity damage under constant normal stiffness. Rock Mechanics and Rock Engineering, 48 (1), 179-195.

Scopus Eid


  • 2-s2.0-84920708709

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3143

Has Global Citation Frequency


Number Of Pages


  • 16

Start Page


  • 179

End Page


  • 195

Volume


  • 48

Issue


  • 1

Place Of Publication


  • Austria

Abstract


  • The shear behaviour of a rough rock joint depends largely on the surface properties of the joint, as well as the boundary conditions applied across the joint interface. This paper proposes a new analytical model to describe the complete shear behaviour of rough joints under constant normal stiffness (CNS) boundary conditions by incorporating the effect of damage to asperities. In particular, the effects of initial normal stress levels and joint surface roughness on the shear behaviour of joints under CNS conditions were studied, and the analytical model was validated through experimental results. Finally, the practical application of the model to a jointed rock slope stability analysis is presented.

Publication Date


  • 2015

Citation


  • Indraratna, B., Thirukumaran, S., Brown, E. T. & Zhu , S. (2015). Modelling the shear behaviour of rock joints with asperity damage under constant normal stiffness. Rock Mechanics and Rock Engineering, 48 (1), 179-195.

Scopus Eid


  • 2-s2.0-84920708709

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3143

Has Global Citation Frequency


Number Of Pages


  • 16

Start Page


  • 179

End Page


  • 195

Volume


  • 48

Issue


  • 1

Place Of Publication


  • Austria