Behaviour of CFRP strengthened CHS members under monotonic and cyclic loading

Tafsirojjaman, T. ORCID: https://orcid.org/0000-0002-4801-6744 and Fawzia, Sabrina and Thambiratnam, David and Zhao, Xiao-Ling (2019) Behaviour of CFRP strengthened CHS members under monotonic and cyclic loading. Composite Structures, 220. pp. 592-601. ISSN 0263-8223

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Abstract

Tubular hollow members, though used in many civil and mechanical applications, are highly vulnerable structural elements when subjected to cyclic loading. They have been used extensively in both onshore and offshore civil infrastructure where cyclic loading can result from earthquake, waves, currents and wind. Due to service loads increment, errors in design, effect of severe environments or loss of material properties, tubular hollow steel members may require to undergo strengthening to withstand both static and cyclic loads. In the present study, a series of experiments on bare and externally-bonded carbon fibre reinforced polymer (CFRP) strengthened CHS steel members subjected to monotonic and cyclic loading has been conducted to investigate the effect of CFRP strengthening technique on the structural behaviour of strengthened members. The results showed that the CFRP strengthening is effective to enhance the cyclic performance of CHS steel members by improving the moment capacity, moment degradation behaviour, secant stiffness, energy dissipation capacity and ductility compared to bare steel CHS members. In addition, the moment capacity of CHS members has been improved under monotonic loading due to the CFRP strengthening as well. Moreover, the impact of adhesive types on the structural response of the strengthened specimens was also investigated.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 03 Aug 2021 04:01
Last Modified: 01 Sep 2021 01:16
Uncontrolled Keywords: Circular Hollow Section (CHS) Steel members, Carbon fibre reinforced polymer (CFRP), Strengthening, Monotonic loading, Cyclic loading
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090599 Civil Engineering not elsewhere classified
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0905 Civil Engineering > 090504 Earthquake Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400506 Earthquake engineering
40 ENGINEERING > 4005 Civil engineering > 400599 Civil engineering not elsewhere classified
40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Identification Number or DOI: https://doi.org/10.1016/j.compstruct.2019.04.029
URI: http://eprints.usq.edu.au/id/eprint/42068

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