Study on behavior of concrete filled elliptical steel tube members part I: Short and long columns under axial compression

Xiaoxiong Zha*, Guobin Gong, Xichao Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

This paper presents theoretical analysis of concrete filled elliptical steel tube (CFEST) members under axial compression. The theoretical analysis presents the distribution rule of interaction between steel tube and core concrete for CFEST column, which is verified and compared with both experimental tests and finite element (FE) simulations. The assumption of effective confined zone distribution of core concrete is proposed and the influence of cross-section shape on the confinement effect is analyzed. A unified axial compressive strength formula and stability factor are obtained for CFEST columns based on existing formulas for concrete filled circular steel tube (CFCST) columns.

Original languageEnglish
Pages (from-to)90-107
Number of pages18
JournalAdvanced Steel Construction
Volume9
Issue number2
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Axially compressive strength
  • Concrete filled elliptical steel tube
  • Interaction
  • Stability factor
  • Theoretical analysis

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