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- 저자 : 조만영(Cho M.Y.) (검색결과 2 건)
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CFRP 긴장재로 프리스트레트된 콘크리트보의 피로 거동
정상모 ( Jeong¸ S. M. ),이차돈 ( Lee¸ C. D. ),박상렬 ( Park¸ S. Y. ),조만영 ( Cho¸ M. Y. ),( Jeong¸ W. T. ),정우태 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
In the applications of FRP materials, it seems the most efficient to use them as pre-stressing tendons, considering their high strength. However, the lack of ductility is of most concern due to their linear elastic behavior up to rupture. In order to solve this ductility problem, a new concept of prestressed concrete beam is proposed, introducing internally un-bonded CFRP tendons. It is essential to verify the long-term safety for repetitive fatigue loads under service states, as well as the safety at the ultimate state. For this purpose, flexural fatigue loading tests were carried out for three test beams. The results showed that the beams prestressed with CFRP tendons had enough safety under fatigue loads, although additional more tests are required in the future.
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CFRP 긴장재로 프리스트레트된 콘크리트보의 피로 거동
정상모(Jeong S.M.),이차돈(Lee C.D.),박상렬(Park S.Y.),조만영(Cho M.Y.),Ye Kyaw, 정우태(Jeong W.T.) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.1
In the applications of FRP materials, it seems the most efficient to use them as pre-stressing tendons, considering their high strength. However, the lack of ductility is of most concern due to their linear elastic behavior up to rupture. In order to solve this ductility problem, a new concept of prestressed concrete beam is proposed, introducing internally un-bonded CFRP tendons. It is essential to verify the long-term safety for repetitive fatigue loads under service states, as well as the safety at the ultimate state. For this purpose, flexural fatigue loading tests were carried out for three test beams. The results showed that the beams prestressed with CFRP tendons had enough safety under fatigue loads, although additional more tests are required in the future.
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