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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.3
- 발행연도
- 2018.3
- 수록면
- 315 - 327 (13page)
이용수
초록· 키워드
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An improved numerical model that can simulate the nonlinear behavior of reinforced concrete beams subjected to blast and impact loadings is introduced in this paper. The layered section approach is based in the formulation, and the dynamic material behaviors of concrete and steel are defined with the use of the dynamic increase factor. Unlike the classical layered section approach that usually gives conservative structural responses because of no consideration of the bond-slip effect, the introduced numerical model takes into account the bond-slip between reinforcing steel and surrounding concrete by changing the bending stiffness EI of elements placed within the plastic hinge length. Since the bond-slip developed after yielding of reinforcing steel is dominant and accompanies fixed-end rotation, the equivalent bending stiffness to be used in the critical region can be evaluated on the basis of the compatibility condition. In advance, the consideration of the unloading and reloading histories of reinforcing steel and concrete makes it possible to exactly trace the structural behavior even after reaching the maximum structural response. Finally, correlation studies between analytical results and experimental data are conducted to establish the validity of the introduced numerical model, and the obtained results show that it is important to consider the bond-slip effect and the loading history of constituent materials.
목차
Abstract
1. Introduction
2. Material Properties
3. Consideration of Bond-Slip Effect
4. Solution Procedure
5. Numerical Applications
6. Conclusion
References
참고문헌 (53)
참고문헌 신청
ACI Committee, & ACI. (2008). Building code requirements for structural concrete (ACI 318-08) and commentary.
Ayoub, A., & Filippou, F. C. (1999). Mixed formulation of bond-slip problems under cyclic loads. Journal of Structural Engineering, 125(6), 661?671.
Bayrak, O., & Sheikkh, S. (1997). High-strength concrete columns under simulated earthquake loading. ACI Structural Journal, 94(6), 708?722.
Belarbi, A., & Hsu, T. T. C. (1994). Constitutive laws of concrete in tension and reinforcing bars stiffened by concrete. ACI Structural Journal, 91(4), 465?474.
Bicanic, N., de Borst, R., Mang, H., & Meschke, G. (2011). Computational modelling of concrete structures. Boca Raton: CRC Press.
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UCI(KEPA) : I410-ECN-0101-2018-532-001900049