Axial Performance of Cementitious Grouted Cable Bolts Under Rotation Constraint Scenarios
Article
Article Title | Axial Performance of Cementitious Grouted Cable Bolts Under Rotation Constraint Scenarios |
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ERA Journal ID | 4070 |
Article Category | Article |
Authors | Rastegarmanesh, Ashkan (Author), Mirzaghorbanali, Ali (Author), McDougall, Kevin (Author), Aziz, Naj (Author), Anzanpour, Sina (Author), Nourizadeh, Hadi (Author) and Moosavi, Mahdi (Author) |
Journal Title | Rock Mechanics and Rock Engineering |
Journal Citation | 55 (9), pp. 5773-5788 |
Number of Pages | 16 |
Year | 2022 |
Publisher | Springer |
Place of Publication | Austria |
ISSN | 0723-2632 |
1434-453X | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00603-022-02950-4 |
Web Address (URL) | https://link.springer.com/article/10.1007/s00603-022-02950-4 |
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. |
Keywords | Cable bolt; Pull out; Rotation; Grout; Confinement |
ANZSRC Field of Research 2020 | 401902. Geomechanics and resources geotechnical engineering |
400502. Civil geotechnical engineering | |
401905. Mining engineering | |
401999. Resources engineering and extractive metallurgy not elsewhere classified | |
Byline Affiliations | Centre for Future Materials |
School of Civil Engineering and Surveying | |
University of Wollongong | |
University of Tehran, Iran | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q774w/axial-performance-of-cementitious-grouted-cable-bolts-under-rotation-constraint-scenarios
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Axial Performance of Cementitious Grouted Cable Bolts Under.pdf | ||
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