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

Jan Nemcik; Shuqi Ma; Naj Aziz; Ting Ren; Xueyu Geng

doi:10.1016/j.ijrmms.2014.07.007

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

Jan Nemcik, Shuqi Ma, Naj Aziz, Ting Ren, Xueyu Geng

Research output: Contribution to journal › Article

48 Citations (Scopus)

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
DOIs	https://doi.org/10.1016/j.ijrmms.2014.07.007
Publication status	Published - Oct 2014
Externally published	Yes

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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

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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.",

author = "Jan Nemcik and Shuqi Ma and Naj Aziz and Ting Ren and Xueyu Geng",

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AU - Nemcik, Jan

AU - Ma, Shuqi

AU - Aziz, Naj

AU - Ren, Ting

AU - Geng, Xueyu

PY - 2014/10

Y1 - 2014/10

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

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JO - International Journal of Rock Mechanics and Minings Sciences

JF - International Journal of Rock Mechanics and Minings Sciences

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Access to Document

10.1016/j.ijrmms.2014.07.007