Comparison of the shear test results of a cable bolt on three laboratory test apparatuses

Li, Xuwei and Aziz, Naj and Mirzaghorbanali, Ali and Nemcik, Jan (2017) Comparison of the shear test results of a cable bolt on three laboratory test apparatuses. Tunnelling and Underground Space Technology, 61. pp. 82-89. ISSN 0886-7798

Abstract

The shear performance of cable bolt is important in assessing its load transfer capacity for effective rock strata reinforcement, which has not yet been thoroughly investigated and understood. Tests carried out in laboratory to study the cable shear performance can be simply classified into two types, the Single Shear Test (SST) and the Double Shear Test (DST). A variety of single and double shear test apparatuses developed in the past were reviewed and the main controlling factors when designing a new shear test apparatus were concluded based on the existing shear test apparatuses and their application. Four cable bolts were tested in laboratory conditions using the DST apparatus developed in the University of Wollongong, the British Standard Single Shear Test apparatus (BSST) and the Megabolt Single Shear Test apparatus (MSST) to compare and assess these different shear test apparatuses. Test results showed that the MSST results were completely different from the BSST results but similar to the DST results. Cable bolts tested in BSST tended to fail at small shear force and shear displacement in the form of inclined shear failure surfaces, whilst cable bolts installed in MSST and DST both tended to fail at greater shear force and shear displacement in the form of tensile cone and cup with bending deformation. It is concluded that both single and double shear test methods can effectively assess cable bolt shear performance as long as suitable apparatus dimensions and boundary conditions are used.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 27 Jun 2017 22:52
Last Modified: 01 Feb 2018 02:59
Uncontrolled Keywords: Shear test method; Single shear test; Double shear test; Cable bolt
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0905 Civil Engineering > 090599 Civil Engineering not elsewhere classified
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
09 Engineering > 0999 Other Engineering > 099999 Engineering not elsewhere classified
Identification Number or DOI: 10.1016/j.tust.2016.10.003
URI: http://eprints.usq.edu.au/id/eprint/32620

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