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Title |
Heat Conduction Analysis and Fire Resistance Capacity Evaluation of Reinforced Concrete Beams Strengthened by FRP
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Authors |
임종욱(Jong-Wook Lim) ; 박종태(Jong-Tae Park) ; 김정우(Jung-Woo Kim) ; 서수연(Soo-Yeon Seo) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.6.001 |
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Keywords |
유한요소해석 ; 섬유강화폴리머보강 ; 철근콘크리트 부재 ; 내화성능 ; 휨내력 Finite element analysis ; Retrofit with FRP(Fire Reinforced Polymer) ; Reinforced concrete member ; Fire resistance performance ; Flexural strength |
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Abstract |
The object of this paper is to find the characteristics of fire proof materials through an analytical method and to suggest a proper approach for fire-proof design of reinforced concrete beam strengthened with fiber reinforced polymer (FRP). Heating tests for fire-proof materials were conducted and the thermal conductivities and specific heats of them were simulated through finite element analyses. In addition, a finite element analysis on the beam specimen strengthened with FRP under high temperature, which was conducted by previous researchers, was performed and the analytical result was compared with test result. And then the compatibility of the analytical approach was evaluated. Finally, the heat resistance characteristic of RC beam strengthened with FRP was analyzed by the proposed analytical method and the strength decrease of the beam due to the high temperature was evaluated. From the comparison with analytical and test result, it was found that the heat transfer from outside to inside through the fire-proof materials can be suitably simulated by using the proposed analytical approach.
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