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

Journal Article


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.

UOW Authors


  •   Aziz, Naj I.
  •   Mirzaghorbanali, Ali (external author)
  •   Nemcik, Jan A.

Publication Date


  • 2014

Citation


  • Nemcik, J., Mirzaghorbanali, A. & Aziz, N. (2014). An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions. Geotechnical and Geological Engineering, 32 (2), 321-335.

Scopus Eid


  • 2-s2.0-84896392156

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2305

Has Global Citation Frequency


Number Of Pages


  • 14

Start Page


  • 321

End Page


  • 335

Volume


  • 32

Issue


  • 2

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.

UOW Authors


  •   Aziz, Naj I.
  •   Mirzaghorbanali, Ali (external author)
  •   Nemcik, Jan A.

Publication Date


  • 2014

Citation


  • Nemcik, J., Mirzaghorbanali, A. & Aziz, N. (2014). An elasto-plastic constitutive model for rock joints under cyclic loading and constant normal stiffness conditions. Geotechnical and Geological Engineering, 32 (2), 321-335.

Scopus Eid


  • 2-s2.0-84896392156

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2305

Has Global Citation Frequency


Number Of Pages


  • 14

Start Page


  • 321

End Page


  • 335

Volume


  • 32

Issue


  • 2