CFRP Plate로 보강된 철근콘크리트 보의 정적 및 피로 거동 특성
Static and Fatigue Behavior Characteristics of Reinforced Concrete Beams Strengthened with CFRP Plate
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In the recent construction industry, Carbon Fiber Reinforced Polymers(CFRPs) have been highly considered as innovative strengthening materials for civil structures due to their superior material properties. This paper is to offer design data and strengthening efficiency of reinforced concrete beams strengthened with CFRP Plate. Static tests were carried out to evaluate failure modes and strengthening capacity. Displacements and strains of steel and CFRP plates were obtained and analyzed through a series of fatigue tests. Also, Those evaluated the energy dissipation. Results of the tests showed increase in strengthening ratios caused debonding failure at the end of beams. For the beams wrapped with CFRP sheets around the end of the plates, debonding failure mode that was induced from flexural cracks was indicated. Through the fatigue tests, it was observed that displacements, strains of steel and CFRP plates converged into certain values. It is also proved that the beams strengthened with CFRP plates are able to resist fatigue loading under serviceability.
Abstract
In the recent construction industry, Carbon Fiber Reinforced Polymers(CFRPs) have been highly considered as innovative strengthening materials for civil structures due to their superior material properties. This paper is to offer design data and strengthening efficiency of reinforced concrete beams strengthened with CFRP Plate. Static tests were carried out to evaluate failure modes and strengthening capacity. Displacements and strains of steel and CFRP plates were obtained and analyzed through a series of fatigue tests. Also, Those evaluated the energy dissipation. Results of the tests showed increase in strengthening ratios caused debonding failure at the end of beams. For the beams wrapped with CFRP sheets around the end of the plates, debonding failure mode that was induced from flexural cracks was indicated. Through the fatigue tests, it was observed that displacements, strains of steel and CFRP plates converged into certain values. It is also proved that the beams strengthened with CFRP plates are able to resist fatigue loading under serviceability.
참고문헌 (9)
- 고병순, "탄소섬유판으로 외부 부착 보강된 철근 콘크 리트보의 거동 특성", 석사, pp.2004
- 김진율, "CFRP로 보강된 철근콘크리트 보의 정적 및 피로 거동", 석사, pp.2006
- 김진율, "CFRP가 보강된 철근콘크리트 보의 거동과 연성", 콘크리트학회 논문집, 19(2), pp.225~231 (2007), 한국콘크리트학회
- 박정용, "단조 반복하중 하의 탄소섬유시트 보강 RC보의 거동에 관한 연구", 구조물진단학회지, 10(4), pp.183~192 (2006), 한국구조물진단유지관리공학회
- 김정섭, "鐵筋콘크리트 보의 炭素纖維시트 補强에 따른 疲勞擧動에 관한 實驗的 硏究", 대한건축학회 논문집(구조계), 18(12), pp.19~26 (2002), 대한건축학회
- Arduini, M., "Parametric Study of Beams with Externally Bonded FRP Reinforcement", ACI Structural Journal, 94(4), pp.493~501 (1997)
- Heffernan, P. J., "Fatigue Behavior of Reinforced Concrete Beams Strengthened with Carbon Fiber Reinforced Plastic Laminates", Journal of Composites for Construction, 8(2), pp.132~140 (2004)
- Rteil, Ahmad A., "Preliminary experimental investigation of the fatigue bond behavior of CFRP confined RC beams", Construction and Building Materials, 21(4), pp.746~755 (2007)
- Toutanji, H., "Flexural Behavior of reinforced concrete beams externally strengthened with CFRP sheets bonded with an inorganic matrix", Engineering Structures, 28(4), pp.557~566 (2006)