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

78 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

Access to Document

10.1016/j.ijrmms.2014.07.007

Cite this

@article{902caa33d7b74c55928adb84a260a725,

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",

month = oct,

day = "1",

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

language = "English",

volume = "71",

pages = "293--300",

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

issn = "1365-1609",

publisher = "Elsevier BV",

}

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 -

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

Abstract

Keywords

Access to Document

Fingerprint

Cite this