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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.56 No.6
- 발행연도
- 2015.1
- 수록면
- 899 - 916 (18page)
이용수
초록· 키워드
오류제보하기
Upgrading or strengthening of existing reinforced concrete (RC) infrastructure is an emerging demand nowadays. Near Surface Mounted (NSM) technique is very promising approach for flexural strengthening of RC members. However, premature failure such as concrete cover separation failure have been a main concern in utilizing this technique. In this study, U-wrap end anchorage with carbon fiber reinforced polymer (CFRP) fabrics is proposed to eliminate the concrete cover separation failure. Experimental programs were conducted to the consequence of U-wrap end anchorage on the flexurally strengthened RC beams with NSM- steel. A total of eight RC rectangular beam specimens were tested. One specimen was kept unstrengthened as a reference; three specimens were strengthened with NSM-steel bars and the remaining four specimens were strengthened with NSM-steel bars and U-wrap end anchorage using CFRP fabrics. A 3D non-linear finite element model (FEM) was developed to simulate the flexural response of the tested specimens. It is revealed that NSM-steel (with and without end-anchors) significantly improved the flexural strength; moreover decreased deflection and strains compared with reference specimen. Furthermore, NSM-steel with end anchorage strengthened specimens revealed the greater flexural strength and improve failure modes (premature to flexure) compared with the NSM-steel without end anchorage specimens. The results also ensured that the U-wrap end anchorage completely eliminate the concrete cover separation failure.
목차
등록된 정보가 없습니다.
참고문헌 (25)
참고문헌 신청
2011 / Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary / ACI-318, American Concrete Institute
Al-Mahmoud, F. / 2010 / RC beams strengthened with NSM CFRP rods and modeling of peeling-off failure / Compos. Struct 92(8):1920~1930
Sabahattin Aykac / 2012 / Strengthening of reinforced concrete beams with epoxy-bonded perforated steel plates / Structural Engineering and Mechanics, An Int＇l Journal 44(6):735~751
Badawi, M. / 2009 / Flexural strengthening of RC beams with prestressed NSM CFRP rods–experimental and analytical investigation / Constr. Build. Mater 23(10):3292~3300
Bilotta, A. / 2011 / Bond efficiency of EBR and NSM FRP systems for strengthening concrete members / J. Compos. Construct 15(5):757~772
Al-Mahmoud, F. / 2010 / RC beams strengthened with NSM CFRP rods and modeling of peeling-off failure / Compos. Struct 92(8):1920~1930
Sabahattin Aykac / 2012 / Strengthening of reinforced concrete beams with epoxy-bonded perforated steel plates / Structural Engineering and Mechanics, An Int＇l Journal 44(6):735~751
Badawi, M. / 2009 / Flexural strengthening of RC beams with prestressed NSM CFRP rods–experimental and analytical investigation / Constr. Build. Mater 23(10):3292~3300
Bilotta, A. / 2011 / Bond efficiency of EBR and NSM FRP systems for strengthening concrete members / J. Compos. Construct 15(5):757~772
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