Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect

Hsuan Teh Hu, Chiung Shiann Huang, Ming Hsien Wu, Yih Min Wu

Research output: Contribution to journalArticlepeer-review

380 Citations (Scopus)

Abstract

Proper material constitutive models for concrete-filled tube (CFT) columns are proposed and verified by the nonlinear finite element program ABAQUS against experimental data. The cross sections of the CFT columns in the numerical analysis are categorized into three groups, i.e., circular section, square section, and square section stiffened by reinforcing ties. Via the numerical analyses, it is shown that for circular CFT columns, the tubes can provide a good confining effect to the concrete especially when the width-to-thickness ratio D/t is small (say D/t<40). For square CFT columns, the tubes do not provide a large confining effect to the concrete especially when the width-to-thickness ratio Bit is large (say B/t>30). The confining effect of square CFT columns with reinforcing ties is enhanced by the use of reinforcing ties especially when the tie spacing is small and the tie number (or tie diameter) is large.

Original languageEnglish
Pages (from-to)1322-1329
Number of pages8
JournalJournal of Structural Engineering
Volume129
Issue number10
DOIs
Publication statusPublished - 2003 Oct

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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