Browse > Article
http://dx.doi.org/10.4334/JKCI.2002.14.6.892

Model for fiber Cross-Sectional Analysis of FRP Concrete Members Based on the Constitutive Law in Multi-Axial Stress States  

조창근 (경북대학교 방재연구소)
김영상 (안동대학교 토목환경공학과)
배수호 (안동대학교 토목환경공학과)
김환석 (안동대학교 토목환경공학과)
Publication Information
Journal of the Korea Concrete Institute / v.14, no.6, 2002 , pp. 892-899 More about this Journal
Abstract
Among the methods for enhancement of load-carrying capacity on flexural concrete member, recently, a concept is being investigated which replaces the steel in a conventional reinforced concrete member with a fiber reinforced polymer(FRP) shell. This study focuses on modeling of the structural behavior of concrete surrounded with FRP shells in flexural bending members. A numerical model of fiber cross-sectional analysis is proposed to predict the stress and deformation state of the FRP shell and concrete. The stress-strain relationship of concrete confined by a FRP shell is formulated to be based on the constitutive law of concrete in multi-axial compressive stress state, in assuming that the compression response is dependent on the radial expansion of the concrete. To describe the FRP shell behavior, equivalent orthotropic properties of in-plane behavior from classical lamination theory are used. The present model is validated to compare with the experiments of 4-point bending tests of FRP shell concrete beam, and has well predicted the moment-curvature relationships of the members, axial and hoop strains in the section, and the enhancement of confinement effect in concrete surrounded by FRP shell.
Keywords
FRP concrete; fiber cross-sectional analysis; confined concrete; classical lamination theory;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Burgueno, R., McKinley, J., Seible, F., and Hegemier, G., "Carbon Shell Systems for Concrete Piers - Design of Pilot Test Specimens," Advanced Composite Technology Transfer Consortium Report No. ACTT-95-01, Univ. of California, San Diego, Jan. 1995.
2 Cho, C. G. and Hotta, H., "A Study on Compressive Strength of Concrete in Flexural Regions of Reinforced Concrete Beams Using Finite Element Analysis," Structural Engineering and Mechanics, An International Journal, Vol. 13, No. 3, pp.313-328, 2002.   과학기술학회마을   DOI   ScienceOn
3 Mirmiran, A., and Shahawy, M., "Behavior of Concrete Columns Confined by Fiber Composites, J. Structural Engineering, ASCE, Vol. 123, No. 5, pp. 583-590, 1997.   DOI   ScienceOn
4 Hosotani, M., Kawashima, K., and Hoshikuma, J., "A Stress-Strain Model for Concrete Cylinders Confined by Carbon Filber Sheets," Journal of Materials, Concrete Structures, and Pavement, JSCE, Vol. 39, No. 592, pp.37-52, 1998.
5 Mander, J. B., "Seismic Design of Bridge Piers," Ph. D. Dissertation. Dept. of Civil Eng., Univ. of Canterbury, New Zealand, 1984.
6 Kent, D. C. and Park, R., "Flexural Members with Confined Concrete," J. of Struct. Div., ASCE, Vol. 97, ST7, pp.1969-1990, 1971.
7 이상호, 허원석, "적층성을 띤 CFS로 보강된 원형 콘크리트 기둥의 보강효과 해석," 한국콘크리트학회 논문집, 제11권, 3호, pp. 89-100, 1999.   과학기술학회마을
8 Saadatmanesh, H., Ehsani, M. R., and Li, M. W., "Strength and Ductility of Concrete Columns Externally Reinforced with Fiber Composite Straps," ACI Structural Journal., Vol. 91, No. 4, pp.434-447, 1994.