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Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load

Journal Article


Abstract


  • Numerical modelling of fully grouted rock bolts loaded in tension is presented by implementing a non-linear bond–slip relationship of bolt–grout interface into a commercial finite difference rock mechanics code. The proposed model shows a close match with the experimental results and analytical predictions in terms of load–displacement relationship, rock bolt axial force distribution and interfacial shear stress distribution. A detailed debonding failure process is also presented, which includes five successive states: elastic state, elastic-softening state, elastic-softening-debonding state, softening-debonding state and debonding state.

UOW Authors


  •   Nemcik, Jan (external author)
  •   Ma, Shuqi (external author)
  •   Aziz, Naj I.
  •   Ren, Ting
  •   Geng, Xueyu (external author)

Publication Date


  • 2014

Citation


  • Nemcik, J., Ma, S., Aziz, N., Ren, T. & Geng, X. (2014). Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load. International Journal of Rock Mechanics and Mining Sciences, 71 293-300.

Scopus Eid


  • 2-s2.0-84907314321

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3021

Number Of Pages


  • 7

Start Page


  • 293

End Page


  • 300

Volume


  • 71

Abstract


  • Numerical modelling of fully grouted rock bolts loaded in tension is presented by implementing a non-linear bond–slip relationship of bolt–grout interface into a commercial finite difference rock mechanics code. The proposed model shows a close match with the experimental results and analytical predictions in terms of load–displacement relationship, rock bolt axial force distribution and interfacial shear stress distribution. A detailed debonding failure process is also presented, which includes five successive states: elastic state, elastic-softening state, elastic-softening-debonding state, softening-debonding state and debonding state.

UOW Authors


  •   Nemcik, Jan (external author)
  •   Ma, Shuqi (external author)
  •   Aziz, Naj I.
  •   Ren, Ting
  •   Geng, Xueyu (external author)

Publication Date


  • 2014

Citation


  • Nemcik, J., Ma, S., Aziz, N., Ren, T. & Geng, X. (2014). Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load. International Journal of Rock Mechanics and Mining Sciences, 71 293-300.

Scopus Eid


  • 2-s2.0-84907314321

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3021

Number Of Pages


  • 7

Start Page


  • 293

End Page


  • 300

Volume


  • 71