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

Authors

Buddhima Indraratna, University of WollongongFollow
Sivanathan Thirukumaran, University of WollongongFollow
E T. Brown, Golder Associates Pty Ltd
Song-Ping Zhu, University of WollongongFollow

RIS ID

92258

Publication Details

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.

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.

Grant Number

ARC/CE1101009, ARC/LP100100236

Additional Grant Number

http://purl.org/au-research/grants/arc/CE1101009

http://purl.org/au-research/grants/arc/LP100100236