Strengthening of circular hollow steel tubular sections using high modulus CFRP sheets

S. Fawzia, R. Al-Mahaidi, X. L. Zhao, S. Rizkalla

Research output: Journal article publicationJournal articleAcademic researchpeer-review

107 Citations (Scopus)

Abstract

This paper describes the behaviour of very high strength (VHS) circular steel tubes strengthened by carbon fibre reinforced polymer (CFRP) and subjected to axial tension. A series of tests were conducted with different bond lengths and number of layers. The distribution of strain through the thickness of CFRP layers and along the CFRP bond length was studied. The strain was found to generally decrease along the CFRP bond length far from the joint. The strain through the thickness of the CFRP layers was also found to decrease from the bottom to top layer. The effective bond length for high modulus CFRP was established. Finally empirical models were developed to estimate the maximum load for a given CFRP arrangement.

Original languageEnglish
Pages (from-to)839-845
Number of pages7
JournalConstruction and Building Materials
Volume21
Issue number4
DOIs
Publication statusPublished - Apr 2007
Externally publishedYes

Keywords

  • Adhesive
  • Bond
  • Carbon fiber reinforced polymer
  • Strengthening steel tube
  • VHS (very high strength) steel tubes

ASJC Scopus subject areas

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

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