Abstract
In this study, a wedge tensioning anchorage device, which enables strengthening of square reinforced concrete (RC) columns with multi-layer prestressed carbon fiber reinforced polymer (CFRP) fabric, was designed and tested. Nine RC columns (three unstrengthened and six strengthened with prestressed CFRP fabric) were tested under combined constant axial loading and horizontal cyclic loading at different axial compression ratios, various prestress levels, different numbers of CFRP fabric layers, and variable area wrapped with prestressed CFRP fabric. The results showed that both the ductility and energy dissipation capacity of the strengthened columns significantly improved. The increase in the prestress level strongly affected the stiffness and horizontal load bearing capacity of the columns, and the increase in the number of CFRP layers had a larger effect on the enhancement of their energy dissipation capacity. For the RC columns fully wrapped with prestressed CFRP fabric, the energy dissipation capacity significantly increased, the ultimate drift ratio was 167% higher than that of the unstrengthened columns, and the energy dissipation capacity increased 6.5 times, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
