TY - JOUR
T1 - Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load
AU - Nemcik, Jan
AU - Ma, Shuqi
AU - Aziz, Naj
AU - Ren, Ting
AU - Geng, Xueyu
PY - 2014/10/1
Y1 - 2014/10/1
N2 - 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.
AB - 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.
U2 - 10.1016/j.ijrmms.2014.07.007
DO - 10.1016/j.ijrmms.2014.07.007
M3 - Article
VL - 71
SP - 293
EP - 300
JO - International Journal of Rock Mechanics and Minings Sciences
JF - International Journal of Rock Mechanics and Minings Sciences
SN - 1365-1609
ER -