Abstract
Lack of corrosion resistance of structural steel has resulted in many structural failures. Fiber reinforced polymer (FRP) bar is emerging as a viable solution to replace steel to mitigate corrosion problems. Since FRP is a brittle material, it can bring about catastrophic sudden structural failures. Conversely, post-earthquake recovery of structures is another prime objective for performance based seismic design. Shape memory alloy (SMA) has the unique ability to undergo large inelastic deformation and regain its undeformed shape through stress removal. Here a hybrid reinforced concrete (RC) column configuration is presented in order to reduce permanent damages, and enhance its corrosion resistance capacity where the plastic hinge region will be reinforced with SMA or stainless steel and the remaining regions with FRP or stainless steel rebar. An analytical investigation has been carried out to develop such hybrid RC columns and analyze them under seismic loadings. The results are compared in terms of base shear-tip displacement, base shear demand/capacity ratio, ductility, residual displacement, and energy dissipation capacity to those of a similar RC column reinforced with stainless steel. The results indicate that such corrosion resistant hybridized column can substantially reduce the residual displacement with adequate energy dissipation capacity during earthquakes.
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.
