Experiments on the Composite Action of Steel Encased Composite Column

강재 매입형 합성기둥의 합성작용에 관한 실험

  • Min Jin (Dept. of Civil Engineering, Chung-Ang University) ;
  • Jung In-Keun (Dept. of Civil Engineering, Chung-Ang University) ;
  • Shim Chang-Su (Dept. of Civil Engineering, Chung-Ang University) ;
  • Chung Young-Soo (Dept. of Civil Engineering, Chung-Ang University)
  • 민진 (중앙대학교 토목공학과) ;
  • 정인근 (중앙대학교 토목공학과) ;
  • 심창수 (중앙대학교 토목공학과) ;
  • 정영수 (중앙대학교 토목공학과)
  • Published : 2005.06.01


Steel encased composite columns have been used for buildings and piers of bridges. Since the column section for the pier is relatively larger than that of building columns, economical steel ratio needs to be investigated for the required performance. Composite action between concrete and embedded steel sections can be obtained by bond and friction. However, the behavior of the column depends on the load introduction mechanism. Compression can be applied to concrete section, steel section and composite section. In this paper, experiments on shear strength of the steel encased composite column were performed to study the effect of confinement by transverse reinforcements, mechanical interlock by holes, and shear connectors. Bond strength obtained from the tests showed considerably higher value than the design value. Confinement, mechanical interlock and stud connectors Increased the shear strength and these values can be used effectively to obtain composite action of Steel Reinforced Concrete(SRC) columns.


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