Behavior of GFRP-confined concrete columns under uniaxial loading

The behavior of concrete columns confined with glass fiber-reinforced polymer is studied in this paper by means of experiment and finite element analysis (FEM). Some design parameters, such as, quantity and bundling form of GFPR, are considered as the influence factor on test result from cylinder columns and square columns. The test reveals that the strength and the strain of the confined concrete columns increased both for cylinder and square columns. The calculated results were compared with the test ones. The results indicate FEM can well simulate the behavior of concrete columns under uniaxial loading when parameters and numerical models are carefully chosen. From the numerical results, some common parameters could be determined for references.