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Title |
An Evaluation of Flexural Strength of Hollow Concrete Filled FRP Tube Piles
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Authors |
김형준(Hyung-Joon Kim) ; 정흥진(Heung-Jin Chung) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.6.204 |
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Keywords |
FRP; 중공형 콘크리트 충전 FRP Tube 말뚝; 변형률적합법; 복합재료 FRP; Hollow concrete filled FRP tube pile; Strain compatibility method; Composite materials |
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Abstract |
In this study, Hollow Concrete Filled FRP Tube Pile(HCFFT Pile) was proposed as a model to utilize the advantages of composite piles andsolve the problem of corrosion, which is a disadvantage of CFT piles, and a numerical analysis model was developed to analyze their behavior. The straincompatibility method was applied considering the damage plastic behavior of concrete, the yield plastic behavior of steel, and the elastic behavior ofFRP. The flexural strength calculation equation of HCFFT piles was proposed considering the change of the FRP tube section according to the distancefrom the neutral axis. The flexural strength calculation equation, numerical analysis results, and experimental results were compared and analyzedto verify their adequacy. The results of this study can be used as basic data for the optimal design of various HCFFT piles using FRP.
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