Experimental investigation on lightweight concrete-filled cold-formed elliptical hollow section stub columns

Tak Ming Chan, Yun Mei Huai, Wei Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

57 Citations (Scopus)


This paper presents an experimental investigation on lightweight concrete-filled circular and elliptical hollow sections under axial compression at cross-section level. The elliptical hollow section (EHS) was cold-formed from the hot-rolled circular hollow section (CHS). Experimental findings, including failure mode, load-deformation history and load carrying capacity, from the 24 stub column tests were compared and reported. Comparisons in particular between the parent hot-rolled CHS and cold-formed EHS were made and stub column results have indicated the cold-forming process decreases both the load carrying capacity and the ductility. Design rules based on European standards were also assessed and assessments have shown that the existing rules can be adopted for the design of lightweight concrete-filled hot-rolled CHS while a simple superposition model can be used for the design of lightweight concrete-filled cold-formed EHS.
Original languageEnglish
Pages (from-to)434-444
Number of pages11
JournalJournal of Constructional Steel Research
Publication statusPublished - 1 Dec 2015


  • Cold-formed
  • Concrete-filled
  • Elliptical hollow section
  • Lightweight concrete
  • Stub column

ASJC Scopus subject areas

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

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