A New Equation for the Shear Strength of Cable Bolts Incorporating the Energy Balance Theory

Rasekh, H; Mirzaghorbanali, A; Nemcik, J; Aziz, N; Li, X

A New Equation for the Shear Strength of Cable Bolts Incorporating the Energy Balance Theory

Rasekh, H

Mirzaghorbanali, A Nemcik, J Aziz, N Li, X

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Publisher:: Springer
Publication Type:: Journal Article
Citation:: Geotechnical and Geological Engineering: an international journal, 2017, 35, (4), pp. 1529-1548
Issue Date:: 2017-08-01

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Field	Value	Language
dc.contributor.author	Rasekh, H https://orcid.org/0000-0003-2064-0753
dc.contributor.author	Mirzaghorbanali, A
dc.contributor.author	Nemcik, J
dc.contributor.author	Aziz, N
dc.contributor.author	Li, X
dc.date.accessioned	2022-08-30T00:46:58Z
dc.date.available	2022-08-30T00:46:58Z
dc.date.issued	2017-08-01
dc.identifier.citation	Geotechnical and Geological Engineering: an international journal, 2017, 35, (4), pp. 1529-1548
dc.identifier.issn	0960-3182
dc.identifier.issn	1573-1529
dc.identifier.uri	http://hdl.handle.net/10453/161078
dc.description.abstract	The application of cable bolts as a secondary support system is an increasing trend in underground coal mines worldwide. The performances of cable bolts have been evaluated under both axial and shear loading conditions. Two methods of testing cables for shear, single and double shear, have been recognised. This paper examines the shear behaviour of a variety of cable bolts under different pre-tension loads by double shear testing. Plain, spiral and the combination of both cable types were used in this study. The initial axial load and the type of cable bolts are the main factors affecting their shear strength. By increasing the axial pre-tension load, the peak shear load occurs at lower shear displacement. The failure angle due to cable bending across the joint at different pre-tension loads varied between 41° and 49°. This demonstrates that the ratio of axial and perpendicular displacements is almost constant and on average the failure occurs at about 45°. A novel analytical model is proposed to evaluate the shear behaviour of pre-tensioned fully grouted cable bolts subjected to double shearing. Energy and Fourier Series methods were incorporated in the model to simulate the shear behaviour of cable bolts. The comparison of the experimental results with the proposed model shows a good agreement.
dc.language	en
dc.publisher	Springer
dc.relation.ispartof	Geotechnical and Geological Engineering: an international journal
dc.relation.isbasedon	10.1007/s10706-017-0191-2
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	A New Equation for the Shear Strength of Cable Bolts Incorporating the Energy Balance Theory
dc.type	Journal Article
utslib.citation.volume	35
utslib.for	0905 Civil Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-08-30T00:46:55Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	35
utslib.citation.issue	4

Abstract:

The application of cable bolts as a secondary support system is an increasing trend in underground coal mines worldwide. The performances of cable bolts have been evaluated under both axial and shear loading conditions. Two methods of testing cables for shear, single and double shear, have been recognised. This paper examines the shear behaviour of a variety of cable bolts under different pre-tension loads by double shear testing. Plain, spiral and the combination of both cable types were used in this study. The initial axial load and the type of cable bolts are the main factors affecting their shear strength. By increasing the axial pre-tension load, the peak shear load occurs at lower shear displacement. The failure angle due to cable bending across the joint at different pre-tension loads varied between 41° and 49°. This demonstrates that the ratio of axial and perpendicular displacements is almost constant and on average the failure occurs at about 45°. A novel analytical model is proposed to evaluate the shear behaviour of pre-tensioned fully grouted cable bolts subjected to double shearing. Energy and Fourier Series methods were incorporated in the model to simulate the shear behaviour of cable bolts. The comparison of the experimental results with the proposed model shows a good agreement.

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http://hdl.handle.net/10453/161078