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• W4385581520 abstract "AbstractStrengthening and rehabilitation of square hollow sections (SHS) are a major concern nowadays as SHS may fail due to higher service loads, fabrication and construction errors, degradation of material over time and adverse effects of the cyclic loading due to earthquakes. In this study, a detailed experimental investigation has been carried out for the implications of using carbon fibre reinforced polymer (CFRP) and glass fibre reinforced polymer (GFRP) as a strengthening measure to mitigate the failure of SHS members under monotonic and cyclic loadings. Strengthened members displayed lower moment degradation and higher moment and energy dissipation capacities and higher stiffness and ductility compared to the bare steel members. Although the amount of CFRP and GFRP fibres were almost equal, CFRP strengthening can result in higher capacity sections due to having higher strength material properties compared to GFRP strengthening. The cyclic responses of the GFRP-strengthened member were close to that of the CFRP-strengthened member and can be more effective for strengthening steel SHS under cyclic flexural loading. The established theoretical model in the current paper can predict reliably the ultimate moment capacities of the strengthened SHS members. This study confirmed that strengthening SHS members with fibre composites will be effective for structures in seismically active regions.Keywords: Carbon fibre reinforced polymerscyclic flexural loadingglass fibre reinforced polymersmonotonic loadingprediction modelsquare hollow sectionssteel membersstrengtheningstructural performance AcknowledgementsThe authors would like to acknowledge the provided financial funding by the School of Civil and Environmental Engineering of the Queensland University of Technology (QUT), Australia to conduct the current experimental study. The authors would like to thank the technical staff of QUT Banyo Pilot Plant Precinct and Mr. Mingh Kim for their assistance during the experimental works.Data availability statementThe raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.Additional informationFundingThis work was supported by the School of Civil and Environmental Engineering of the Queensland University of Technology (QUT), Australia." @default.
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• W4385581520 date "2023-08-04" @default.
• W4385581520 modified "2023-09-27" @default.
• W4385581520 title "Experimental investigation on the behaviour of FRP strengthened square hollow section steel members under monotonic and cyclic loading" @default.
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• W4385581520 doi "https://doi.org/10.1080/15732479.2023.2241042" @default.
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