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

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

doi:10.1016/j.conbuildmat.2006.06.014

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 publication › Journal article › Academic research › peer-review

127 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 language	English
Pages (from-to)	839-845
Number of pages	7
Journal	Construction and Building Materials
Volume	21
Issue number	4
DOIs	https://doi.org/10.1016/j.conbuildmat.2006.06.014
Publication status	Published - Apr 2007
Externally published	Yes

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
General Materials Science

More information

10.1016/j.conbuildmat.2006.06.014

Cite this

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title = "Strengthening of circular hollow steel tubular sections using high modulus CFRP sheets",

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.",

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AU - Al-Mahaidi, R.

AU - Zhao, X. L.

AU - Rizkalla, S.

PY - 2007/4

Y1 - 2007/4

N2 - 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.

AB - 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.

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KW - Bond

KW - Carbon fiber reinforced polymer

KW - Strengthening steel tube

KW - VHS (very high strength) steel tubes

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SN - 0950-0618

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JO - Construction and Building Materials

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

Abstract

Keywords

ASJC Scopus subject areas

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