Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/109220
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Type: Journal article
Title: Modelling jointed rock mass as a continuum with an embedded cohesive-frictional model
Author: Le, L.
Nguyen, G.
Bui, H.
Sheikh, A.
Kotousov, A.
Khanna, A.
Citation: Engineering Geology, 2017; 228:107-120
Publisher: Elsevier
Issue Date: 2017
ISSN: 0013-7952
1872-6917
Statement of
Responsibility: 
Linh A. Le, Giang D. Nguyen, Ha H. Bui, Abdul H. Sheikh, Andrei Kotousov, Aditya Khanna
Abstract: The mechanical and hydraulic properties of a jointed rock mass are strongly affected by the characteristics of joints within the intact rock mass. In this study, a constitutive model for jointed rock masses is developed by incorporating the contributions of both the joint and its surrounding rock mass. The behaviour of the joint is represented by a new coupled damage-plasticity cohesive-frictional model taking into account its dilation evolution and the reduction of both strength and stiffness, while the surrounding rock behaviour is assumed to behave elastically. The interactions between the joint and the surrounding rock are described by a set of kinematic enhancements and internal equilibrium equations across the interface of the joint. The formulation of the proposed model is presented along with its implementation algorithms and validation with experimental data. The enhanced kinematics facilitates the incorporation of both behaviour and orientation of the joint, together with the size and behaviour of the surrounding rock, allowing capturing key characteristics of jointed rock mass responses under mixed-mode loading conditions at different spatial scales.
Keywords: Jointed rock mass; constitutive modelling; double scale; coupled damage-plasticity; cohesive model
Rights: © 2017 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.enggeo.2017.07.011
Grant ID: http://purl.org/au-research/grants/arc/FT140100408
http://purl.org/au-research/grants/arc/DP160100775
http://purl.org/au-research/grants/arc/DP170103793
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Mechanical Engineering conference papers

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