Behavior of high-strength circular concrete-filled steel tubular (CFST) column under eccentric loading

Seong Hui Lee, Brian Uy, Sun Hee Kim, Young Hwan Choi, Sung Mo Choi

Research output: Contribution to journalReview articlepeer-review

135 Scopus citations

Abstract

In this study, to estimate the behavior of a circular CFST column under eccentric loading, an experimental test and fiber element analysis on 11 circular stub CFST column specimens were conducted. The parameters of specimens were high strength steel (above Fy=450MPa) and concrete (fck=31.5MPa, 59 MPa), diameterthickness ratio (Dt=25, 40, 60, 80, 100) and eccentric distance (e=0D,0.167D,0.5D). The results from the experimental tests and fiber element analysis were compared with AISC (2005) [16], Eurocode 4 (1994) [18], and KBCS (2009) [17] to verify the suitability of the analysis in the codes. From the analysis results, it is considered that AISC [16], and KBCS [17] show good agreement for the circular CFST column under eccentric loading and that Eurocode 4 [18] overestimates the loadmoment relation of the circular CFST column under eccentric loading.

Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalJournal of Constructional Steel Research
Volume67
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Diameterthickness ratio (Dt)
  • Fiber element analysis
  • Loadmoment relation
  • Local buckling
  • Thin-walled circular CFST column

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