Strength and Moment-Curvature Relationship of HCFT Columns under Eccentric Load

편심압축이 작용하는 HCFT기둥에 대한 내력특성과 모멘트-곡률의 곤계

  • Published : 2002.12.01


Recently, CFT Column has reported a lot of study result, because a CFT column has certain superior structural properties as well as good productivity, execution efficiency, and improved rigidity over existing column. However, CFT column still has problems clearing the capacity evaluation between its steel tube member and high-strength concrete materials. Also, high-strength concrete filled steel square tube column(HCFT) examined numerical value explanatorily about transformation performance(M-ø) of when short-column receives equal flexure-moment from axial stress on research for concrete. hnd, with basis assumption, executed development of analysis program of moment-curvature relation for analytic analysis of transformation performance of HCFT section that get by an experiment. This study investigated to properties of structural(capacity, curvature), through a series of experiments for HCFT with key parameters, such as strength of concrete(600kgf/$\textrm{cm}^2$), D/t ratio, slenderness ratio(λ) and concrete kinds under eccentric load. And, I executed comparative analysis with AISC-LRFD, AIJ and Takanori Sato etc. and experiment result that is capacity design formula.


  1. Fukumoto, "Structural Stability Design (Steel and Composite Structures)," Pergamon, 1997.
  2. Knowles, R. B. and Park, R., "Strength of Concrete Filled Steel Tubular Column," ASCE, Vol. 95, 1969, pp. 2565-2587.
  3. Tomii, M. and Yoshimaro K., "Experimental Studies on Concrete Filled Steel Tubular Columns under Concentric Loading," International Colloquium on Stability of Structures Under Static and Dynamic Loads, Washington, D. C., May 17-19, 1977, pp. 718-741.
  4. 佐藤孝典, "充塡鋼管コンクリ―ト構造の短柱から長柱まで連續した設計式の提案." 日本建築學會, No.526, 1999.
  5. 日本建築學會, 鐵骨鐵筋コンクリ一ト構造計算規準.同解說, 1981.
  6. 이승조, "고성능콘크리트를 충전한 강관 기둥의 내력특성에 관한 연구-콘크리트 강도별 거동 특성." pp.11-18, 대한건축학회논문집, 제14권 8호, 1998.8.
  7. Richard, R. M., "Versatile Elastic-Plastic Stess Strain Formula," ASCE, Vol 101, EM4, 1975.
  8. AISC, "Load and Resistance Design Specification for Structural Steel Bulidings," Chicago, IL,1999.
  9. Shams, M., and Saadeghvaziri, M. A., "Nonlinear Response of Concrete-Filled Steel Tubular Columns under Axial Loading," ACI Structural Journal, Vol. 96, No.5, 1999, pp. 1009-1017.
  10. ACI Committee 318, "Building Code Requirement for Reinforcement Concrete and Commentary," American Concrete Institute, 1999.
  11. Popovics, S., "A Numerical Approach to the Complete Stress-Strain Curves for Concrete," Cement and Concrete Research, Vol.3 No.5, 1973.
  12. 日本建築學會, コンクリ一ト充塡鋼管構造設計施工指針, 1997.