An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions
Article
Article Title | An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions |
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ERA Journal ID | 4022 |
Article Category | Article |
Authors | Nemcik, Jan (Author), Mirzaghorbanali, Ali (Author) and Aziz, Naj (Author) |
Journal Title | Geotechnical and Geological Engineering: an international journal |
Journal Citation | 32 (2), pp. 321-335 |
Number of Pages | 15 |
Year | 2014 |
Publisher | Springer |
Place of Publication | Netherlands |
ISSN | 0960-3182 |
1573-1529 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s10706-013-9716-5 |
Web Address (URL) | https://link.springer.com/article/10.1007%2Fs10706-013-9716-5 |
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. |
Keywords | constant normal stiffness conditions; cyclic loading; rock joints; shear behaviour |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Wollongong |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3y3q/an-elasto-plastic-constitutive-model-for-rock-joints-under-cyclic-loading-and-constant-normal-stiffness-conditions
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