An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions

Nemcik, Jan and Mirzaghorbanali, Ali and Aziz, Naj (2014) An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions. Geotechnical and Geological Engineering, 32 (2). pp. 321-335. ISSN 0960-3182

Abstract

An elasto-plastic constitutive model is introduced for rock joints under cyclic loading, considering the additional shear resistance generated by the asperity damage in the first forward shear cycle and sliding mechanism for further shearing. A series of cyclic loading direct shear tests was conducted on artificial joints with triangular asperities and replicas of a real rock asperity surface under constant normal stiffness (CNS) conditions. The model was calibrated and then validated using selected data sets from the experimental results. Model simulations were found to be in good agreement with the rock joints behaviour under cyclic loading and CNS conditions both in stress prediction and dilation behaviour. In addition, dynamic stability analysis of an underground structure was carried out, using Universal Distinct Element Code and the proposed constitutive model.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 30 May 2017 03:41
Last Modified: 30 May 2017 03:41
Uncontrolled Keywords: constant normal stiffness conditions; cyclic loading; rock joints; shear behaviour
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
Identification Number or DOI: 10.1007/s10706-013-9716-5
URI: http://eprints.usq.edu.au/id/eprint/30894

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