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Uniaxial Compression Behavior of Circular RC Columns Confined by Carbon Fiber Sheet Wraps  

Han, Sang Hoon (충북대학교 토목공학과)
Hong, Ki Nam (충북대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.11, no.2, 2007 , pp. 125-133 More about this Journal
Abstract
External confinement by CFS (Carbon Fiber Sheet) is a very effective retrofit method for the reinforced concrete columns subject to either static or seismic loads. For the reliable and cost-effective design of CFS, an accurate stress-strain curve is required for CFS-confined concrete. In this paper, uniaxial compression test on short RC column with circular section was performed. To evaluate the effect of confinement on the stress-strain relationship of CFS-confined concrete, CFS area ratio, spiral area ratio, and concrete compressive strength are considered as the test variables. Experiment results indicate that CFS jacketing significantly enhances strength and ductility of concrete. In addition, the CFS-jacketed specimens with the spiral steel show the lower load increasement ratio than those without the spiral steel.
Keywords
Carbon fiber sheet; Confinement effect; Uniaxial compression test; RC column;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 이경훈, 김희철, 홍원기, "카본시트튜브로 구속된 압축재의 성능평가", 구조물진단학회논문집 제10권 3호, 2006. 5, pp. 152-158.
2 천성철, 김지영, 박형철, 박칠림, "탄소섬유로 횡구속된 콘크리트의 응력-변형률 모델에 관한 연구", 대한건축학회논문집 제15권 1호, 1999. 1, pp. 27-36.
3 Hosotani, M., Kawashima, K., and Hoshikuma J., "a Stres-strain Model for Concrete cylinders confined by Carbon Fiber Sheets," Journal of Materials, Concrete Structures and Pavements, JSCE, Vol. 39, No. 592, 1998, pp. 36-52.
4 Antonio N. and Nick M. B., "FRP Jacketed Concrete under Uniaxial Compression", Construction and Building Materials, Vol. 8, No. 2, 1995, 11, pp. 115-124.
5 Mander, J. B., Priestley, M. J. N., and Park, R., "Theoretical Stres-strain Model for Confined Concrete", Journal of Structural Engineering, ASCE, Vol. 114, No. 8, 1998, pp. 1804-1826.   DOI   ScienceOn
6 한상훈, 홍기남, "탄소섬유시트로 구속된 RC 기둥의 일축압축 거동", 구조물진단학회논문집 제9권 2호, 2005. 4, pp. 207-216.