Steel and Composite Structures

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Analysis of behaviour for hollow/solid concrete-filled CHS steel beams

  • Kvedaras, Audronis Kazimieras (Department of Steel and Timber Structures, Department of Structural Mechanics, Vilnius Gediminas Technical University) ;
  • Sauciuvenas, Gintas (Department of Steel and Timber Structures, Department of Structural Mechanics, Vilnius Gediminas Technical University) ;
  • Komka, Arunas (Department of Steel and Timber Structures, Department of Structural Mechanics, Vilnius Gediminas Technical University) ;
  • Jarmolajeva, Ela (Department of Steel and Timber Structures, Department of Structural Mechanics, Vilnius Gediminas Technical University)
  • Received : 2014.06.27
  • Accepted : 2015.06.01
  • Published : 2015.08.25
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Abstract

Interaction between the external thin-walled steel tube and the internal concrete core significantly increases the bending resistance of composite beams and beam-columns in comparison with the steel or concrete members. There is presented a developed method for design of hollow and solid concrete-filled steel tubular beams based on test data, which gives better agreement with test results than EC4 because its limitation to take an increase in strength of concrete caused by confinement contradicts the recommendation of 6.7.2(4) that full composite action up to failure may be assumed between steel and concrete components of the member. Good agreement between the results of carried out experimental, numerical and theoretical investigations allows recommending the proposed method to use in design practice.

Keywords

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