EXPERIMENTAL INVESTIGATION ON AXIAL COMPRESSIVE BEHAVIOR OF FRP CONFINED CONCRETE COLUMNS

摘要

In this paper axial compression test results of 29 Fiber Reinforced Polymer (FRP) confined concrete columns and 2 reference plain concrete columns are introduced. Most of column specimens were confined with Carbon Fiber Reinforced Polymer (CFRP) sheet and some of specimens were hybrid confined with both CFRP sheet and Glass Fiber Reinforced Polymer (GFRP) sheet. The influences of FRP sheet layer, section height to width ratio, initial compressive ratio and FRP type on the axial compressive behavior of FRP confined concrete columns are investigated. Based on the experimental results equations of complete stress-strain curve and the parameters of equations are proposed for CFRP sheet confined concrete.