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Title |
Evaluation on Blast Resistance Performance of Reinforced Concrete Wall Strengthened by FRP Sheet
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Authors |
이건호(Kun-Ho Lee) ; 김재민(Jae-Min Kim) ; 김재현(Jae Hyun Kim) ; 이상훈(Sang-Hoon Lee) ; 김강수(Kang Su Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.5.151 |
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Keywords |
철근콘크리트; FRP시트; 방호벽; 폭발하중; 폭발 취약도분석 Reinforced concrete; FRP sheet; Blast resistive wall; Blast load; Blast fragility analysis |
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Abstract |
Owing to the recent increase in the frequency of explosion accidents, blast resistive design has garnered attention to reduce the damage of important structural elements. However, domestic research on the blast resistive structures is still insufficient, and domestic design guideline against blast loads are not documented yet. In this study, a numerical study on the RC blast resistive walls, where the test variable was the presence of FRP sheet, was performed using LS-DYNA program. Based on the numerical results, displacement-time hysteretic curve, pressure-impulse diagram, and fragility curve of the test specimens were derived. It was shown that the FRP sheet strengthening method is efficient to improve the blast resistive performance of the RC wall. Also, the strengthening effect of FRP sheet on the RC wall was stronger when the magnitude of the blast load was greater.
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