Steel and Composite Structures

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Development of new inner diaphragms for a H-beam and composite box column joint

  • Khan, Mahbub (School of Civil Engineering, University of Sydney) ;
  • Uy, Brian (School of Civil Engineering, University of Sydney) ;
  • Kim, Jin W (Steel Solution Research Lab, POSCO)
  • Received : 2021.03.24
  • Accepted : 2021.12.22
  • Published : 2022.02.10
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Abstract

This paper presents an experimental and a numerical investigation of a H-beam - composite box column joint fabricated with two new inner diaphragms and a continuous inner diaphragm. The main objective of the current research project is to investigate the structural performance of the newly developed inner diaphragms under a cyclic loading protocol. Hysteretic behaviour of the composite joints is analysed to investigate the structural performance of the new and continuous inner diaphragms. This paper compares the result of the finite element (FE) models with the new and continuous inner diaphragms against their counterpart experimental results. To produce a design criterion for the newly developed inner diaphragms, yielding or failure area of the inner diaphragms under tensile stress is analysed from the FE results.

Keywords

Acknowledgement

The research described in this paper was financially supported by POSCO.

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