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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.19 No.5
- 발행연도
- 2017.1
- 수록면
- 477 - 488 (12page)
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초록· 키워드
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In this paper, an innovative technique for finite element (FE) modeling of steel tube-confined concrete (STCC) columns with active confinement under axial compressive loading is presented. In this method, a new constitutive model for the stress-strain relationship of actively-confined concrete is proposed. In total, 14 series of experimental STCC stub columns having active confinement were modeled using the ABAQUS software. The results obtained from the 3D model including the compressive strength at the initial peak point and failure point, as well as the axial and lateral stress-strain curves were compared with the experimental results to verify the accuracy of the 3D model. It was found that there existed a good agreement between them. A parametric study was conducted to investigate the effect of the concrete compressive strength, steel tube wall thickness, and pre-stressing level on the behavior of STCC columns with active confinement. The results indicated that increasing the concrete core’s compressive strength leads to an increase in the compressive strength of the active composite column as well as its earlier failure. Furthermore, a reduction in the tube external diameter-to-wall thickness ratio affects the axial stress-strain curve and the confining pressure, while increasing the pre-stressing level has a negligible effect on the two.
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참고문헌 (32)
참고문헌 신청
2012 / ABAQUS Users and Analysis Users Manual / ABAQUS 6.12 Documentation
Chang, X. / 2009 / Mechanical performance of eccentrically loaded prestressing concrete filled circular steel tube columns by means of expansive cement / Eng. Struct. 31(11):2588~2597
Chen, W.F. / 1982 / Plasticity in Reinforced Concrete
Ellobody, E. / 2006 / Behaviour of normal and high strength concrete-filled compact steel tube circular stub columns / J. Constr. Steel Res. 62(7):706~715
Elsawaf, S. / 2012 / Robustness of connections to concrete-filled steel tubular columns under fire during heating and cooling
Chang, X. / 2009 / Mechanical performance of eccentrically loaded prestressing concrete filled circular steel tube columns by means of expansive cement / Eng. Struct. 31(11):2588~2597
Chen, W.F. / 1982 / Plasticity in Reinforced Concrete
Ellobody, E. / 2006 / Behaviour of normal and high strength concrete-filled compact steel tube circular stub columns / J. Constr. Steel Res. 62(7):706~715
Elsawaf, S. / 2012 / Robustness of connections to concrete-filled steel tubular columns under fire during heating and cooling
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