Abstract
Based on reanalyzing test results of uniaxial compressive behavior of concrete at constant high temperatures in China, with the compressive cube strength of concrete from 20 to 80 MPa, unified formulas for uniaxial compressive strength, elastic modulus, strain at peak uniaxial compression and mathematical expression for unaxial compressive stress-strain relations for the concrete at constant high temperatures were studied. Furthermore, the axial stress-axial strain relations between laterally confined concrete under axial compression and multiaxial stress-strain relations for steel at constant high temperatures were studied. Finally, based on continuum mechanics, the mechanics model for concentric cylinders of circular steel tube with concrete core of entire section loaded at constant high temperatures was established. Applying elasto-plastic analysis method, a FORTRAN program was developed, and the concrete-filled circular steel tubular (CFST) stub columns at constant high temperatures were analyzed. The analysis results are in agreement with the experiment ones from references.
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LI Wei, GUO Zhen-hai. Experimental research of strength and deformation of concrete at high temperature[J]. Journal of Building Structures, 1993, 14(1): 8–16.(in Chinese)
HU Hai-tao, DONG Hu-li. Experimental research on strength and deformation of high-strength concrete at high temperature[J]. China Civil Engineering Journal, 2002, 35(6): 44–47.(in Chinese)
GUO Zhen-hai, SHI Xu-dong. Behavior of reinforced concrete at high temperature and its calculation[M]. Beijing: Tsinghua University Press, 2003.(in Chinese)
Abe T, Furumura F. Mechanical properties of high strength concrete at high temperatures[J]. Journal of Structural Construction Engineering, AIJ, 1999, 515(1): 163–168.(in Japanese)
Castillo C, Duttani A J. Effect of transient high temperature on high-strength concrete[J]. ACI Material Journal, 1990, 87(1): 47–53.
Cheng F P, Kodur V K R, Wang T C. Stress-strain curves for high strength concrete at elevated temperatures[J]. Journal of Materials in Civil Engineering, ASCE, 2004, 16(1): 84–90.
Khalaf F M, Devenny A S. Performance of brick aggregate concrete at high temperatures[J]. Journal of Materials in Civil Engineering, ASCE, 2004, 16(6): 556–565.
YU Zhi-wu, DING Fa-xing. Unified calculation method of compressive mechanical properties of concrete[J]. Journal of Building Structures, 2003, 24(4): 41–46.(in Chinese)
HAN Lin-hai. Concrete filled steel tubular structure [M]. Beijing: Science Press, 2000.(in Chinese)
DING Fa-xing, YU Zhi-wu. Theoretical analysis of mechanical properties of concrete filled tubular steel stub columns[J]. Engineering Mechanics, 2005, 22(1): 173–181.(in Chinese)
JIANG Shou-chao, LI Guo-qiang, LOU Guo-biao, et al. Numerical approach of behavior of steel-concrete composite slabs subjected to fire[J]. Journal of Building Structures, 2004, 25(3): 38–44. (in Chinese)
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Foundation item: Projects(50438020; 50578162) supported by the National Natural Science Foundation of China
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Ding, Fx., Yu, Zw. Behavior of concrete and concrete-filled circular steel tubular stub columns at constant high temperatures. J Cent. South Univ. Technol. 13, 726–732 (2006). https://doi.org/10.1007/s11771-006-0022-8
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DOI: https://doi.org/10.1007/s11771-006-0022-8