Experimental study of critical and post-buckling behaviour of prestressed stayed columns

Israel Osofero, Ahmer Wadee, Leroy Gardner

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

A full scale experimental investigation into the strength and behaviour of prestressed steel stayed columns in compression has been conducted. Results, including full load versus end-shortening curves, for a total of 18 test specimens are presented. Two critical modes of buckling — symmetric and antisymmetric — with interactive post-buckling are demonstrated experimentally and the imperfection sensitivity of the stayed columns is investigated. Interactive buckling is observed primarily when the individual buckling loads of the antisymmetric and symmetric modes are close or when the antisymmetric mode is critical. Analysis of the results reveals that increased prestress leads to an increased load-carrying capacity when instability occurs in the symmetric mode, but the reverse trend is found when the antisymmetric mode is critical.
Original languageEnglish
Pages (from-to)226 - 241
JournalJournal of Constructional Steel Research
Volume79
Issue number0
DOIs
Publication statusPublished - Dec 2012

Keywords

  • Prestressed stayed columns
  • steel structures
  • physical experiments
  • ultimate load
  • interactive buckling
  • post-buckling
  • cable system
  • cross-arm

Fingerprint

Dive into the research topics of 'Experimental study of critical and post-buckling behaviour of prestressed stayed columns'. Together they form a unique fingerprint.

Cite this