Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring
Past research has shown that for short-span glulam beams reinforced with a simple tension GFRP fabric can lead to undesirable failure modes at the reinforcement termination point. An experimental programme aimed at investigating alternative reinforcement schemes comprising hoops and tension anchorin...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2079-6439/13/6/80 |
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| author | Herry Chen Yannick Vetter Catherine Shrimpton Daniel Lacroix |
| author_facet | Herry Chen Yannick Vetter Catherine Shrimpton Daniel Lacroix |
| author_sort | Herry Chen |
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| description | Past research has shown that for short-span glulam beams reinforced with a simple tension GFRP fabric can lead to undesirable failure modes at the reinforcement termination point. An experimental programme aimed at investigating alternative reinforcement schemes comprising hoops and tension anchoring as an alternative to fan-type anchorage and full-length confinement was undertaken. Sixteen GFRP-reinforced glulam beams were tested to failure under four-point bending. Overall, the hoops and tension anchoring prevented premature debonding and stress concentration failures observed in beams reinforced with simple tension reinforcement. Improvements in the stiffness and strength were generally observed for all configurations with the average failure strain being on average 1.16 times larger than the unreinforced specimens. While hoops prevented undesirable failure modes, it had limited improvements when using bidirectional fabrics for the hoops. Conversely, the configurations with tension anchoring using bidirectional fabrics only resulted in improved performance with some level of post-peak resistance compared to the unreinforced specimens and those reinforced with simple tension reinforcement. For short-span beams, or any FRP-reinforced glulam beams where flexure is not the dominant failure mode, more robust modelling techniques are required to properly capture the distribution of the reinforcement. |
| format | Article |
| id | doaj-art-ab3e335b9a8d4bc7ac08ee0b72f2e603 |
| institution | Matheson Library |
| issn | 2079-6439 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Fibers |
| spelling | doaj-art-ab3e335b9a8d4bc7ac08ee0b72f2e6032025-06-25T13:49:14ZengMDPI AGFibers2079-64392025-06-011368010.3390/fib13060080Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension AnchoringHerry Chen0Yannick Vetter1Catherine Shrimpton2Daniel Lacroix3Department of Civil and Environmental Engineering (CEE), University of Waterloo, Waterloo, ON N2L 3G1, CanadaDepartment of Civil and Environmental Engineering (CEE), University of Waterloo, Waterloo, ON N2L 3G1, CanadaDepartment of Civil and Environmental Engineering (CEE), University of Waterloo, Waterloo, ON N2L 3G1, CanadaDepartment of Civil and Environmental Engineering (CEE), University of Waterloo, Waterloo, ON N2L 3G1, CanadaPast research has shown that for short-span glulam beams reinforced with a simple tension GFRP fabric can lead to undesirable failure modes at the reinforcement termination point. An experimental programme aimed at investigating alternative reinforcement schemes comprising hoops and tension anchoring as an alternative to fan-type anchorage and full-length confinement was undertaken. Sixteen GFRP-reinforced glulam beams were tested to failure under four-point bending. Overall, the hoops and tension anchoring prevented premature debonding and stress concentration failures observed in beams reinforced with simple tension reinforcement. Improvements in the stiffness and strength were generally observed for all configurations with the average failure strain being on average 1.16 times larger than the unreinforced specimens. While hoops prevented undesirable failure modes, it had limited improvements when using bidirectional fabrics for the hoops. Conversely, the configurations with tension anchoring using bidirectional fabrics only resulted in improved performance with some level of post-peak resistance compared to the unreinforced specimens and those reinforced with simple tension reinforcement. For short-span beams, or any FRP-reinforced glulam beams where flexure is not the dominant failure mode, more robust modelling techniques are required to properly capture the distribution of the reinforcement.https://www.mdpi.com/2079-6439/13/6/80glulamfibre-reinforced polymeralternative reinforcementtension anchoringhoopsconfinement |
| spellingShingle | Herry Chen Yannick Vetter Catherine Shrimpton Daniel Lacroix Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring Fibers glulam fibre-reinforced polymer alternative reinforcement tension anchoring hoops confinement |
| title | Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring |
| title_full | Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring |
| title_fullStr | Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring |
| title_full_unstemmed | Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring |
| title_short | Experimental Investigation of the Behaviour of Short-Span FRP-Reinforced Glulam Beams with Hoops and Tension Anchoring |
| title_sort | experimental investigation of the behaviour of short span frp reinforced glulam beams with hoops and tension anchoring |
| topic | glulam fibre-reinforced polymer alternative reinforcement tension anchoring hoops confinement |
| url | https://www.mdpi.com/2079-6439/13/6/80 |
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