Comparative Study of Controlled and Fractured Concrete Model for FRP Confined Circular Short Columns

摘要

The experimental and analytical study on calculation of ultimate strength and deformation of plain cement concrete strengthened by wrapping with fiber reinforced polymer (FRP) for circular short column is presented. The study emphasizes on comparison of analytical strength obtained by Abaqus (finite element tool) with theoretical mathematical equations formulated by researchers Mander et al., Girgin and Richart et al. This paper focuses on the validation of deformation and strength by experimental, analytical and mathematical results. The validation assessment is made with virgin and fractured specimen strengthened with carbon FRP (CFRP) and incorporating the similar boundary conditions in analytical tool (Abaqus). The study highlights on good agreement between analytical model with experimental deformation results and strength that are validated with proposed models proposed by researchers Mander et al., Girgin and Richart et al. The study has helped in evaluating the confinement value (k) for PCC for the development of confined compressive strength using the empirical formula.