Abstract
The combined strengthening method involving prestressed PET straps and angle steels can be applied to improve the properties of concrete structures. Applying a prestress changes the conventional passive constraint into an active one, and the stress hysteresis problem observed in conventional reinforcements can be resolved. This paper reports a study on the eccentric compression of four short reinforced concrete columns, and analyses of the failure characteristics, lateral deflection, axial compression performance, and effect of PET straps on the specimens. The research was conducted by controlling the distance between the PET straps and the eccentricity under concentrated loading conditions. The results showed that the combined strengthening method with prestressed PET straps and angle steels could effectively suppress the generation and development of cracks, thus improving the compression performance and ductility of the reinforced concrete columns. The compression performance of the strengthened columns increased by as much as 10.40%, and the limit displacement increased by as much as 116.9%. The compression performance of the reinforced columns decreased with increasing eccentricity. Our study confirms that PET straps have important practical significance in terms of their cost-effectiveness, environmental friendliness, and mature reinforcement technology for engineering reinforcement applications.
Published Version
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 call