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pp.25-33
This paper presents experimental and analytical results for predicting tensile behavior of FRP Hybrid Bar(HYB). In order to confirm the tensile behavior of HYB wrapped with glass fiber reinforced polymer(GFRP) on deformed rebar, direct tensile tests were performed on 8 specimens. The diameter of the HYB was considered as a test variable and the tensile load, displacement, and tensile strain of each specimen were measured by tensile test. In order to predict the tensile behavior of HYB, numerical analysis based on tensile model of each material was performed. The tensile models of reinforcing bar, glass fiber, and resin, which are the constituent materials of HYB, are assumed to be simple shapes according to their material properties. The results of the numerical analysis through the strain compliance condition of each material were compared with the experimental results and both results showed consistent trends. The experimental and analytical ratios for yield and ultimate loads were 1.02 and 1.00, respectively, and the coefficient of variation were 3.61 and 2.54, respectively. However, a maximum of about 9 mm error occurred due to the slip generated by the direct tensile test in the comparison between the experimental results and the analytical results for the tensile displacement.
2. 인장 실험 계획 및 방법
2.1 실험 변수 및 사용 재료 특성
2.2 HYB의 인장 실험체 제작
2.3 실험체 설치 및 계측 계획
3. 실험 결과 및 토의
3.1 실험 결과 요약
3.2 인장 실험 결과에 의한 HYB의 역학적 특성
3.3 인장 강도 모델 제안
3.4 실험 결과와 해석 결과의 비교
4. 결 론
ACKNOWLEDGMENT
REFERENCES
