Research Progress on Mechanical Property for PVC-FRP Confined Reinforced Concrete Column
As a new type of composite structure,PVC-FRP confined reinforced concrete columns combine the advantages of high strength,corrosion resistance of FRP material,and lightweight,good ductility of PVC tube.The structure enhances the mechanical properties of concrete columns through the corresponding restraining effect of the PVC-FRP tube on the internal core concrete.Currently,domestic and overseas researchers have conducted many experimental studies and theoretical analyses on the PVC-FRP confined reinforced concrete columns,to explore the effect of reinforcement rate,type of FRP,and thickness of PVC tube on the characteristics of mechanical properties,seismic performance,and durability performance.Among them,based on the constitutive model of FRP confined concrete,some constitutive models applicable to the PVC-FRP tube confined reinforced concrete columns are proposed.Aims to further clarify the working state of PVC-FRP confined reinforced concrete columns during service,this article reviews the research status of PVC-FRP confined reinforced concrete columns in recent years,and proposes some suggestions for future research.
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