Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load
RIS ID
90744
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.
Publication Details
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.