Study on the Strength of Limit Axial Force and Accumulated Limit Axial Force of Concrete Filled Square Tube Columns

콘크리트 충전 각형강관 기둥부재의 한계축력 및 누적한계축력에 관한 연구

  • 서성연 (한라대학교 건축공학과) ;
  • 정진안 (일본 후쿠오카대학 건축공학과) ;
  • 김성용 (ES건축구조엔지니어링)
  • Received : 2005.06.21
  • Accepted : 2005.09.26
  • Published : 2005.10.27

Abstract

Experimental and analytical work was conducted to investigate the relations of axial force and deformational capacity of concrete-filled square steel tube columns. The test series consisting of 36 columns were tested under the constant axial load and horizontal cyclic load. The axial force of the columns that resisted under the cyclic lateral load was defined as a certified strength of limit axial force. The analytical model was defined as a cantilever beam-column. The axial force of the beam-column that resisted under the cyclic lateral load was defined as an accumulated certified strength of limit axial force. The purpose of this study is to investigate the certified strength of limit axial force of concrete-filled steel tube beam-columns, which were subjected to both axial and lateral load condition corresponding to a given constant rotation angle. Another purpose of this study is to discuss the comparison of the certified strength of limit axial force of concrete and the accumulated certified strength of limit axial force of concrete-filled steel tube columns.

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