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.
| Original language | English |
|---|---|
| Pages (from-to) | 293-300 |
| Number of pages | 8 |
| Journal | International Journal of Rock Mechanics and Mining Sciences |
| Volume | 71 |
| Early online date | 28 Aug 2014 |
| DOIs | |
| Publication status | Published - 1 Oct 2014 |
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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. https://doi.org/10.1016/j.ijrmms.2014.07.007