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Ultimate Resisting Capacity of Axially Loaded Circular Concrete-Filled Steel Tube Columns

축력이 재하된 원형 콘크리트 충전강관 기둥의 최대 저항능력

  • Kwak, Hyo-Gyoung (Dept. Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kwak, Ji-Hyun (Dept. Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
  • 곽효경 (한국과학기술원 건설 및 환경공학과) ;
  • 곽지현 (한국과학기술원 건설 및 환경공학과)
  • Received : 2012.02.23
  • Accepted : 2012.06.26
  • Published : 2012.08.31

Abstract

The axial load on the concrete-filled steel tube (CFT) column produces confinement stress, which enhances strength of the core concrete. The amount of strength increase in concrete depends on the magnitude of produced confinement stress. From nonlinear analyses, the ultimate resisting capacity of the CFT columns subjected to axial loads was calculated. Nonlinear material properties such as Poisson's ratio and stress-strain relation were considered in the suggested model, and the maximum confining stress was obtained by multi axial yield criteria of the steel tube. This proposed model was verified by comparing the analytical results with experimental results. Then, regression analyses were conducted to predict the maximum confining stress according to D/t ratio and material properties without rigorous structural analysis. To ensure the validity of the suggested regression formula, various empirical formulas and Eurocode4 design code were compared.

Acknowledgement

Supported by : 국토해양부

References

  1. Schneider, S. P., "Axially Loaded Concrete-Filled Steel Tubes," Journal of Structural Engineering, Vol. 124, No. 10, 1998, pp. 1125-1138. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:10(1125)
  2. Mander, J. B., Priestley, M. J. N., and Park, R., "Theoretical Stress-Strain Model for Confined Concrete," Journal of Structural Engineering, Vol. 114, No. 8, 1988, pp. 1804-1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804)
  3. Park, R., Kent, D. C., and Sampson, R. A., "Reinforced Concrete Members with Cyclic Loading," Journal of the Structural Division, Vol. 98, No. 7, 1972, pp. 1341-1360.
  4. Popovics, S., "A Numerical Approach to the Complete Stress-Strain Curve of Concrete," Cement and Concrete Research, Vol. 3, No. 5, 1973, pp. 583-599. https://doi.org/10.1016/0008-8846(73)90096-3
  5. Richart, F. E., Brandtzaeg, A., and Brown, R. L., A Study of the Failure of Concrete under Combined Compressive Stresses, Bulletin No. 185, Engineering Experimental Station, University of Illinois, 1928, pp. 54-62.
  6. Sakino, K., Nakahara, H., Morino, S., and Nishiyama, I., "Behavior of Centrally Loaded Concrete-Filled Steel-Tube Short Columns," Journal of Structural Engineering, Vol. 130, No. 2, 2004, pp. 180-188. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:2(180)
  7. Tang, J., Hino, S., Kuroda, I., and Ohta, T., "Analytical Study on Elasto-Plastic Flexural Behavior of Concrete- Filled Circular Steel Tubular Columns," Memoirs of the Faculty of Engineering, Kyushu University, Vol. 57, No. 1, 1997, pp. 39-52.
  8. Hu, H. T., Huang, C. S., Wu, M. H., and Wu, Y. M., "Nonlinear Analysis of Axially Loaded Concrete-Filled Tube Columns with Confinement Effect," Journal of Structural Engineering, ASCE, Vol. 129, No. 10, 2003, pp. 1322- 1329. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:10(1322)
  9. O'Shea, M. D. and Bridge, R. Q., "Design of Circular Thin- Walled Concrete Filled Steel Tubes," Journal of Structural Engineering, Vol. 126, No. 11, 2000, pp. 1295-1303. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:11(1295)
  10. Eurocode 4 - European Committee for Standardisation, EN 1994-1-1, Design of Composite Steel and Concrete Structures, Part 1.1 General Rules and Rules for Buildings, European Union, 2004, pp. 59-62.
  11. 황원섭, 김동조, 정대안, "콘크리트 구속 효과를 고려한 CFT 단주의 극한강도," 대한토목학회 논문집, 23권, 5A 호, 2003, pp. 1011-1018.
  12. Susantha, K. A. S., Ge, H., and Usami, T., "Uniaxial Stress-Strain Relationship of Concrete Confined by Various Shaped Steel Tubes," Engineering Structures, Vol. 23, No. 10, 2001, pp. 1331-1347. https://doi.org/10.1016/S0141-0296(01)00020-7
  13. Elremaily, A. and Azizinamini, A., "Behavior and Strength of Circular Concrete-Filled Tube Columns," Journal of Constructional Steel Research, Vol. 58, No. 12, 2002, pp. 1567-1591. https://doi.org/10.1016/S0143-974X(02)00005-6
  14. Fam, A., Qie, F. S., and Rizkalla, S., "Concrete-Filled Steel Tubes Subjected to Axial Compression and Lateral Cyclic Loads," Journal of Structural Engineering, Vol. 130, No. 4, 2004, pp. 631-640. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:4(631)
  15. Liang, Q. Q. and Fragomeni, S., "Nonlinear Analysis of Circular Concrete-Filled Steel Tubular Short Columns under Axial Loading," Journal of Constructional Steel Research, Vol. 65, No. 12, 2009, pp. 2186-2196. https://doi.org/10.1016/j.jcsr.2009.06.015
  16. Razvi, S. and Saatcioglu, M., "Confinement Model for High-Strength Concrete," Journal of Structural Engineering, ASCE, Vol. 125, No. 3, 1999, pp. 281-288. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(281)
  17. Kupfer, H., Hilsdorf, H. K., and Rusch, H., "Behavior of Concrete under Biaxial Stresses," ACI, Vol. 66, No. 8, 1969, pp. 656-666.
  18. Madas, P. and Elnashai, A., "A New Passive Confinement Model for the Analysis of Concrete Structures Subjected to Cyclic and Transient Dynamic Loading," Earthquake Engineering and Structural Dynamics, Vol. 21, No. 5, 1992, pp. 409-431. https://doi.org/10.1002/eqe.4290210503
  19. Chen, W. F., "Plasticity in Reinforced Concrete," 1st Edition, McGraw-Hill, 1982, pp. 26-41.
  20. Huang, C. S., Yeh, Y. K., Liu, G. Y., Hu, H. T., Tsai, K., Weng, Y., Wang, S., and Wu, M. H., "Axial Load Behavior of Stiffened Concrete-Filled Steel Columns," Journal of Structural Engineering, Vol. 128, No. 9, 2002, pp. 1222-1230. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:9(1222)
  21. Tomii, M., Yoshimura, K., and Morishita, Y., "Experimental Studies on Concrete Filled Steel Tubular Stub Columns under Concentric Loading," International Colloquium on Stability of Structures under Static and Dynamic Loads, Washington, D. C., 1977, pp. 718-741.
  22. Tanaka, K., Kanoh, Y., Teraoka, M., and Sasaki, A., "Axial Compressive Behaviour of Composite Short Column Using High Strength Concrete," Proc. Japan Concrete Institute, Vol. 12, No. 2, 1990, pp. 83-88.
  23. Han, L. H. and Zhao, X. L., "Tests and Mechanics Model for Concrete-Filled SHS Stub Columns, Columns and Beam-Columns," Steel and Composite Structures, Vol. 1, No. 1, pp. 51-74.

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