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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

84 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
Early online date	28 Aug 2014
DOIs	https://doi.org/10.1016/j.ijrmms.2014.07.007
Publication status	Published - 1 Oct 2014

Keywords

FLAC model
Rockbolt elements
Fully grouted rock bolts
Non-linear bond–slip relationship
Debonding failure process

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10.1016/j.ijrmms.2014.07.007

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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",

year = "2014",

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doi = "10.1016/j.ijrmms.2014.07.007",

language = "English",

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journal = "International Journal of Rock Mechanics and Minings Sciences",

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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 -

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

Abstract

Keywords

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