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Structural behavior on the steel beam with strengthening bonded carbon plate

카본판을 접착보강한 강재의 거동분석

  • Sung, Ikhyun (Department of Civil Engineering, Hanseo University)
  • Received : 2016.03.07
  • Accepted : 2016.03.27
  • Published : 2016.03.31

Abstract

The use of advanced composite materials in strengthening and repair of existing structures is increasing rapidly. This paper describes an effectiveness of a bonding of carbon fiber reinforced sheets to corroded steel members for the repair. Three types of surface treatment, what we call cleaning, of corroded plate are chosen as parameters. They are "without cleaning","removal of painting by brushing" and "complete removal of painting". From the experimental study, the following findings are obtained. 1) When the steel plate is subjected to tensile force, carbon fiber sheets adhered to the painted steel gives a higher strength against peeling compared to that of the plate without painting, 2) The grade of surface treatment, or cleaning of the corroded steel plate affects the strengthening effect.

구조물에 복합재료를 사용한 보강과 복구에 대한 사용이 증가하고 있는 상황에서 갑작스러운 강도저하로 발생되는 재난을 피하기 위하여 임시 보강하고자 탄소섬유 판을 이용하여 기존금속재와 접합(접착방식)을 통한 강도증진효과를 연구하였다. 특히 실험을 통하여 강-탄소섬유보강재로 이루어진 복합 재 거동을 파악하였으며 여기에 적절한 시험을 위한 새로운 형태의 시험편을 제작하였다. 접합재로 레진을 접착하는 부착 면을 달리하여 거동을 비교하기 위하여 표면처리가 다른 시험편을 각각 고려하여 시험한 결과 강성보강효과는 물론 일체거동의 특성이 잘 나타남을 알 수 있었다.

Keywords

References

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