An effective improvement for enhancing the strength and feasibility of FRP spike anchors
An effective improvement for enhancing the strength and feasibility of FRP spike anchors
Spike anchors are promising remedies to prevent the debonding failure of FRP sheets. The performance of anchored FRP sheets largely depends on critical parameters such as the extending bond length of FRP sheet over the embedded spike and bend radius, greatly limiting their efficiency and feasibility in field. Moreover, their long-term performance dealing with possible bond loss is still unknown. Recently, an anchorage system consisting of a spike anchor and two patches has been developed. This anchorage system was expected to have several advantages over conventional spike anchors, which were rarely explored but are presented in this paper. A total of 21 experiments have been conducted to demonstrate their merits in terms of higher anchor strengths and minimizing the impacts of the extending bond length over the embedded spike, bend radius and FRP-concrete bond. Experimental results also suggest a great remedy to further improve the anchor efficiency by reducing the fanning angle. Thus, the proposed system could be considered as an efficient and feasible anchorage for FRP sheets.
Anchorage system, Bend radius, Bond length, FRP-concrete bond, Fanning angle, Spike anchor
Sun, Wei
ab8e8179-f25d-4f51-95c3-8c009acf0c27
Liu, Shukui
bd00c69b-b51e-4d5f-8c74-b8bc76d6c068
Zhang, Chunyang
eba93fe3-a612-43da-86ee-d7b661895600
1 September 2020
Sun, Wei
ab8e8179-f25d-4f51-95c3-8c009acf0c27
Liu, Shukui
bd00c69b-b51e-4d5f-8c74-b8bc76d6c068
Zhang, Chunyang
eba93fe3-a612-43da-86ee-d7b661895600
Sun, Wei, Liu, Shukui and Zhang, Chunyang
(2020)
An effective improvement for enhancing the strength and feasibility of FRP spike anchors.
Composite Structures, 247, [112449].
(doi:10.1016/j.compstruct.2020.112449).
Abstract
Spike anchors are promising remedies to prevent the debonding failure of FRP sheets. The performance of anchored FRP sheets largely depends on critical parameters such as the extending bond length of FRP sheet over the embedded spike and bend radius, greatly limiting their efficiency and feasibility in field. Moreover, their long-term performance dealing with possible bond loss is still unknown. Recently, an anchorage system consisting of a spike anchor and two patches has been developed. This anchorage system was expected to have several advantages over conventional spike anchors, which were rarely explored but are presented in this paper. A total of 21 experiments have been conducted to demonstrate their merits in terms of higher anchor strengths and minimizing the impacts of the extending bond length over the embedded spike, bend radius and FRP-concrete bond. Experimental results also suggest a great remedy to further improve the anchor efficiency by reducing the fanning angle. Thus, the proposed system could be considered as an efficient and feasible anchorage for FRP sheets.
Text
An effective improvement for enhancing the strength and feasibility of FRP spike anchors
- Accepted Manuscript
More information
Accepted/In Press date: 4 May 2020
e-pub ahead of print date: 11 May 2020
Published date: 1 September 2020
Additional Information:
Funding Information:
The support of the National Natural Science Foundation of China [grant numbers 51608244 and 51608520], Natural Science Foundation of Jiangsu Province (BK20160265), China Postdoctoral Science Foundation (2016M590516), the Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment, and the School of Civil Engineering and Mechanics at Lanzhou University are greatly appreciated.
Publisher Copyright:
© 2020 Elsevier Ltd
Keywords:
Anchorage system, Bend radius, Bond length, FRP-concrete bond, Fanning angle, Spike anchor
Identifiers
Local EPrints ID: 442506
URI: http://eprints.soton.ac.uk/id/eprint/442506
ISSN: 0263-8223
PURE UUID: 86bc8d21-dc7e-4530-881d-afb05b42f3b6
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Date deposited: 17 Jul 2020 16:30
Last modified: 17 Mar 2024 05:43
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Contributors
Author:
Wei Sun
Author:
Shukui Liu
Author:
Chunyang Zhang
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