Behaviour of concrete-filled double skin (CHS inner and CHS outer) steel tubular stub columns and beam-columns

Zhong Tao, Lin Hai Han, Xiao Ling Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

377 Citations (Scopus)


A series of tests on concrete filled double skin steel tubular (CFDST) stub columns (14) and beam-columns (12) were carried out. Both outer and inner tubes were circular hollow sections (CHS). The main experimental parameters for stub columns were the diameter-to-thickness ratio and hollow section ratio, while those for beam-columns were slenderness ratio and load eccentricity. A theoretical model is developed in this paper for CFDST stub columns and beam-columns. A unified theory is described where a confinement factor (ξ) is introduced to describe the composite action between the outer steel tube and the sandwiched concrete. The predicted load versus deformation relationships are in good agreement with stub column and beam-column test results. Simplified models are derived to predict the load-carrying capacities of the composite members.

Original languageEnglish
Pages (from-to)1129-1158
Number of pages30
JournalJournal of Constructional Steel Research
Issue number8
Publication statusPublished - Aug 2004
Externally publishedYes


  • Beam-columns
  • Composite sections
  • Concrete-filled tube
  • Double-skin
  • Steel hollow sections
  • Stub columns
  • Theoretical model

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Metals and Alloys


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