Axial Performance of Cementitious Grouted Cable Bolts Under Rotation Constraint Scenarios

Rastegarmanesh, Ashkan and Mirzaghorbanali, Ali ORCID: https://orcid.org/0000-0002-7967-9233 and McDougall, Kevin ORCID: https://orcid.org/0000-0001-6088-1004 and Aziz, Naj and Anzanpour, Sina and Nourizadeh, Hadi and Moosavi, Mahdi (2022) Axial Performance of Cementitious Grouted Cable Bolts Under Rotation Constraint Scenarios. Rock Mechanics and Rock Engineering, 55 (9). pp. 5773-5788. ISSN 0723-2632

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Abstract

With the increased use of cable bolts in mining and civil projects worldwide, it is important to understanding the performance of these support structures in different scenarios. The axial load transfer mechanisms of six cable bolts were investigated experimentally in this research study. A large-scale pull-out testing apparatus with a capacity of 1000 kN was designed and manufactured as part of the investigation. A common commercial cementitious grout with a uniaxial compressive strength of 60 MPa was used to encapsulate 300 mm length samples. Passive confinement encapsulated each sample to ensure the concrete’s integrity during the testing. The encapsulated cable bolts were then subjected to axial loads using a hydraulic ram, with the axial load and displacement measured using a load cell and LVDTs. Two scenarios were investigated: free rotation and restricted rotation. The results demonstrated that the apparatus effectively recorded the behaviour of the cable during pull-out and identified that the radial stiffness of the samples had a significant impact on the overall load of the system. The results also indicated that rotation had a limited influence on the load behaviour of the samples tested.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 28 Jun 2022 05:48
Last Modified: 21 Oct 2022 00:23
Uncontrolled Keywords: Cable bolt; Pull out; Rotation; Grout; Confinement
Fields of Research (2020): 40 ENGINEERING > 4019 Resources engineering and extractive metallurgy > 401902 Geomechanics and resources geotechnical engineering
40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering
40 ENGINEERING > 4019 Resources engineering and extractive metallurgy > 401905 Mining engineering
40 ENGINEERING > 4019 Resources engineering and extractive metallurgy > 401999 Resources engineering and extractive metallurgy not elsewhere classified
Identification Number or DOI: https://doi.org/10.1007/s00603-022-02950-4
URI: http://eprints.usq.edu.au/id/eprint/49375

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