Steel and Composite Structures

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Investigation on circular and octagonal concrete-filled double skinned steel tubular short columns under axial compression

  • R, Manigandan (Department of Civil Engineering, Birla Institute of Technology and Science, Pilani (BITS Pilani)) ;
  • Kumar, Manoj (Department of Civil Engineering, Birla Institute of Technology and Science, Pilani (BITS Pilani)) ;
  • Shedge, Hrishikesh N. (Department of Civil Engineering, Birla Institute of Technology and Science, Pilani (BITS Pilani))
  • Received : 2022.02.21
  • Accepted : 2022.04.11
  • Published : 2022.07.10
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Abstract

This paper describes the experimental and numerical investigation on circular and octagonal CFDST short columns under concentric loading to study their responses to various internal circular steel tube sizes by the constant cross-sectional dimensions of the external circular and octagonal steel tube. The non-linear finite element analysis of circular and octagonal CFDST columns was executed using the ABAQUS to forecast and compare the axial behavior influenced by the various sizes of internal circular steel tubes. The study shows that the axial compressive strength and ductility of circular and octagonal CFDST columns were significantly influenced by inner steel tubes with the strengths of constituent materials.

Keywords

Acknowledgement

The authors would like to thank workshop operator Ramesh Das for his technical cooperation in performing the tests.

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