Behavior of fiber glass bolts, rock bolts and cable bolts in shear
Article
Article Title | Behavior of fiber glass bolts, rock bolts and cable bolts in shear |
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ERA Journal ID | 4070 |
Article Category | Article |
Authors | Li, Xuwei (Author), Aziz, Naj (Author), Mirzaghorbanali, Ali (Author) and Nemcik, Jan (Author) |
Journal Title | Rock Mechanics and Rock Engineering |
Journal Citation | 49 (7), pp. 2723-2735 |
Number of Pages | 13 |
Year | 2016 |
Publisher | Springer |
Place of Publication | Austria |
ISSN | 0723-2632 |
1434-453X | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s00603-015-0907-7 |
Abstract | This paper experimentally compares the shear behavior of fiber glass (FG) bolt, rock bolt (steel rebar bolt) and cable bolt for the bolt contribution to bolted concrete surface shear strength, and bolt failure mode. Two double shear apparatuses of different size were used for the study. The tensile strength, the shear strength and the deformation modulus of bolt control the shear behavior of a sheared bolted joint. Since the strength and deformation modulus of FG bolt, rock bolt and cable bolt obtained from uniaxial tensile tests are different, their shear behavior in reinforcing joints is accordingly different. Test results showed that the shear stiffness of FG bolted joints decreased gradually from the beginning to end, while the shear stiffness of joints reinforced by rock bolt and cable bolt decreased bilinearly,which is clearly consistent with their tensile deformation modulus. The bolted joint shear stiffness was highly influenced by bolt pretension in the high stiffness stage for both rock bolt and cable bolt, but not in the low stiffness stage. The rock bolt contribution to joint shear strength standardised by the bolt tensile strength was the largest, followed by cable bolts, then FG bolts. Both the rock bolts and cable bolts tended to fail in tension, while FG bolts in shear due to their low shear strength and constant deformation modulus. |
Keywords | FG bolt; rock bolt; cable bolt; joint shear strength; joint shear stiffness; bolt failure mode |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Wollongong |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3xw3/behavior-of-fiber-glass-bolts-rock-bolts-and-cable-bolts-in-shear
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