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 journalArticle

41 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 languageEnglish
Pages (from-to)293-300
Number of pages8
JournalInternational Journal of Rock Mechanics and Mining Sciences
Volume71
DOIs
Publication statusPublished - Oct 2014
Externally publishedYes

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Debonding
Bolts
Rocks
Rock mechanics
Stress concentration
Shear stress

Cite this

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title = "Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load",
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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Numerical modelling of failure propagation in fully grouted rock bolts subjected to tensile load. / Nemcik, Jan; Ma, Shuqi; Aziz, Naj; Ren, Ting; Geng, Xueyu.

In: International Journal of Rock Mechanics and Mining Sciences, Vol. 71, 10.2014, p. 293-300.

Research output: Contribution to journalArticle

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

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

M3 - Article

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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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