Creep stability and buckling strength of concrete columns

Z. P. Bažant*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A solution is given for the long-term deflexions of a reinforced concrete column with an initial curvature according to a general theory of linear creep. This is used to produce solutions: (1) according to the Arutyunyan-Maslov theory (using an incomplete gamma function); (2) according to the approximate Dischinger-Whitney law, (3) by the use of an effective deformation modulus. It is shown that, whilst critical long-term loads may be calculated, these are very sensitive to inaccuracies in the creep theory and that it is more convenient to consider the long-term buckling strength of a column. A practical method of analysis is presented in which the long-term buckling strength is assessed by calculating the short-term buckling strength but using a reduced elastic modulus. Graphs are presented to aid analysis.

Original languageEnglish (US)
Pages (from-to)85-94
Number of pages10
JournalMagazine of Concrete Research
Volume20
Issue number63
DOIs
StatePublished - Jan 1 1968

ASJC Scopus subject areas

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

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