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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.11 No.1
- 발행연도
- 2017.3
- 수록면
- 135 - 149 (15page)
이용수
초록· 키워드
오류제보하기
This is attributed to the reduction in compression zone compared to columns under pure axial compression. Modern codes and standards are introducing the need to perform extreme event analysis under static loads. There has been a number of studies that focused on the analysis and testing of concentric columns. On the other hand, the augmentation of compressive strength due to partial confinement has not been treated before. The higher eccentricity causes smaller confined concrete region in compression yielding smaller increase in strength of concrete. Accordingly, the ultimate eccentric confined strength is gradually reduced from the fully confined value ƒ<SUB>cc</SUB> (at zero eccentricity) to the unconfined value ƒ"<SUB>cc</SUB> (at infinite eccentricity) as a function of the ratio of compression area to total area of each eccentricity. This approach is used to implement an adaptive Mander model for analyzing eccentrically loaded columns. Generalization of the 3D moment of area approach is implemented based on proportional loading, fiber model and the secant stiffness approach, in an incremental-iterative numerical procedure to achieve the equilibrium path of P–ε and M–φ response up to failure. This numerical analysis is adapted to assess the confining effect in rectangular columns confined with conventional lateral steel. This analysis is validated against experimental data found in the literature showing good correlation to the partial confinement model while rendering the full confinement treatment unsafe.
목차
Abstract
1. Introduction
2. Material Models
3. Confined Concrete Concentric Analysis
4. Confined Concrete Eccentric Analysis
5. Results and Discussion
6. Conclusions
References
참고문헌 (33)
참고문헌 신청
Abd El Fattah, A. M. (2012). Behavior of concrete columns under various confinement effects. Ph.D. Dissertation, Kansas State University.
Abd El Fattah, A. M., Rasheed, H. A., & Esmaeily, A. (2011). A new eccentricity-based simulation to generate ultimate confined interaction diagrams for circular concrete columns. Journal of the Franklin Institute?Engineering and Applied Mathematics, 348(7), 1163?1176.
Attard, M. M., & Setunge, S. (1996). Stress?strain relationship of confined and unconfined concrete. ACI Materials Journal, 93(5), 432?442.
Binici, B. (2005). An analytical model for stress?strain behavior of confined concrete. Engineering Structures, 27(7), 1040?1051.
Bonet, J. L., Barros, F. M., & Romero, M. L. (2006). Comparative study of analytical and numerical algorithms for designing reinforced concrete section under biaxial bending. Computers & Structures, 84(31?32), 2184?2193.
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UCI(KEPA) : I410-ECN-0101-2017-532-002243787