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Title |
Flexural Reinforcement of Timber Beams Using Carbon Fiber Plates
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Authors |
최진철(Jin-Chul Choi) ; 김승훈(Seung-Hun Kim) ; 이용택(Yong-Taeg Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.6.238 |
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Keywords |
목재; 보강기술; 탄소섬유판; 부착강도; 섬유강화플라스틱; 정착 Timber; Reinforcing technology; CFRP plate; Bond strength; FRP; Anchoring |
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Abstract |
This paper summarizes the development and evaluation of the reinforcement details of CFRP plates to improve the bending performanceof wooden beams. In this study, the reinforcing technology using high-strength bolts for the end of beam were developed as reinforcement detailsfor reinforcing wooden beams with CFRP plates by EBM method. In order to evaluate the bending performance, a bending test was conducted forthe specimens with details of reinforcement such as the EBM method and the NSM method. From the experimental results, the EBM specimens withoutend restraints had both the CFRP plate attachment failure and the splitting failure of the wood. In the load-displacement curve, the non-reinforcedspecimens exhibited linear elastic behavior and then brittle fracture after the maximum load. The maximum load of the specimens reinforced by theEBM method increased by 31.5~63.0% compared to the non-reinforced specimens, and the maximum load according to the end restraints of thehigh-strength bolts increased by 24.0%. Based on the reinforcement amount of the same CFRP plate, EBM reinforcement was 2.67 times larger inmaximum load increase rate than NSM reinforcement.
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