Abstract
AbstractIn RC structures either to increase the load carrying capacity of a column or to strengthen a deteriorated column, one of the methods of strengthening used is Fibre Reinforced Polymer (FRP) wrapping. The use of FRP which is a composite material for confining reinforced concrete columns is increasing rapidly due to its ease of application, high strength to weight ratio and less requirement of time of execution for retrofitting of concrete structures. Design of these FRP confined concrete columns requires an accurate estimate of the performance enhancement due to the confinement mechanism. Therefore, the key issue is to develop a confinement model, which relates the confined concrete strength with the unconfined concrete strength. In the present study, a three-dimensional finite element model of rectangular column converted to elliptical shape by attaching precast concrete segments followed by Carbon Fibre Reinforced Polymer (CFRP) wrapping under different eccentricities of compressive loads has been developed using ANSYS—a software for Finite Element Method of Analysis. Effect of important parameters, namely, aspect ratio of elliptical cross section, eccentricity of loading and number of layers of CFRP wrapping on load carrying capacity of compression members has been studied. From the results obtained it is seen that the load carrying capacity of elliptical compression members increases with number of layers of CFRP. Also it decreases with increase in eccentricity of loading and increase in aspect ratio of cross section.KeywordsPrecast concreteComposite materialsColumnsFinite element methodsModellingFibre reinforced polymer
Sign-in/Register to access full text options 
Free) 
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
