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논문 기본 정보

자료유형
학술저널
저자정보
Il-Young Jang (Kumoh National University of Technology) Hoon-Gyu Park (LIG Engineering & Construction) Yong-Gon Kim (Hankyong National University) Sung-Soo Kim (Samsung Construction Corporation) Jong-Hoe Kim (Ministry of Land Transport and Maritime Affairs)
저널정보
한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.3 No.1
발행연도
2009.6
수록면
39 - 45 (7page)

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초록· 키워드

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The purpose of this study is to establish flexural behavior of high-strength concrete beams confined in the pure bending zone with stirrups. The experiment was carried out on full-scale high-strength reinforced concrete beams, of which the compressive strengths were 40 MPa and 70 MPa. The beams were confined with rectangular closed stirrups. Test results are reviewed in terms of flexural capacity and ductility. The effect of web reinforcement ratio, longitudinal reinforcement ratio and shear span to beam depth ratio on ductility are investigated. The analytic method is based on finite element method using fiber-section model, which is known to define the behavior of reinforced concrete structures well up to the ultimate state and is proven to be valid by the verification with the experimental results above. It is found that confinement of concrete compressive regions with closed stirrups does not affect the flexural strength but results in a significantly increased ductility. Moreover, the ductility tends to increase as the quantity of stirrups increases by reducing the spacing of stirrups.

목차

Abstract
1. Introduction
2. Experiment
3. Experimental result
4. Analysis of the behavior of beam member in consideration of confinement effect
5. Proposal for the spacing of stirrup confinement by the tensile reinforcement ratio
6. Conclusions
References

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