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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.1
- 발행연도
- 2018.1
- 수록면
- 1 - 17 (17page)
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초록· 키워드
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To investigate the load-carrying capacity of high-strength concrete-encased steel angle (CES-A) columns, in which corner steel angles are encased in concrete and transmit column loads directly, a numerical study was performed by using a proposed analysis model. The proposed model considered the strain compatibility, confinement effect, local buckling, and premature cover-spalling, and was verified against previous experimental study results. To investigate the effect of design parameters, a parametric study was conducted, and based on the parametric study results, a simple approach was also discussed to predict the residual strength (2nd peak load) after spalling of concrete cover at corners (1st peak load). The numerical investigations showed that when steel contribution and confinement efficiency are high, CES-A columns exhibit relatively large load-carrying capacity even after cover-spalling, due to the maintained strength of confined concrete and yielding of steel angles, and the proposed simple approach gave a good prediction for the residual strength.
목차
Abstract
1. Introduction
2. Previous Experimental Studies
3. Nonlinear Numerical Analysis
4. Parametric Study and Discussion
5. Conclusions
References
참고문헌 (50)
참고문헌 신청
American Concrete Institute (ACI). (2014). Building code requirements for structural concrete and commentary. Farmington Hills, MI: ACI 318-14.
Badalamenti, V., Campione, G., & Mangiavillano, M. L. (2010). Simplified model for compressive behavior of concrete columns strengthened by steel angles and strips. Journal of Engineering Mechanics, 136(2), 230?238.
Bambach, M. R., & Rasmussen, K. J. R. (2004a). Design provisions for sections containing unstiffened elements with stress gradient. Journal of Structural Engineering, 130(10), 1620?1628.
Bambach, M. R., & Rasmussen, K. J. R. (2004b). Effective widths of unstiffened elements with stress gradient. Journal of Structural Engineering, 130(10), 1611?1619.
Calderon, P. A., Adam, J. M., Ivorra, S., Pallares, F. J., & Gimenez, E. (2009). Design strength of axially loaded RC columns strengthened by steel caging. Materials and Design, 30, 4069?4080.
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