Experimental investigation and Finite Element Analysis for GFRP reinforced hollow concrete column under axial loading

Abstract

This article presents, the behavior of a hollow concrete column (HCC) reinforced with glass fiber-reinforced polymer (GFRP) was investigated. We investigated five sample columns with axial compression. The diameter of the column is 250 mm. GFRP with a 6 mm diameter is used for transverse reinforcement. The columns have a spacing of 150 mm. The research variables were inner core diameter (0, 65, and 80 mm.) and longitudinal reinforcing materials (GFRP and Steel). After the experimental tests, the Abaqus software was used to create finite element models. The experimental results served as the control model for the modeling and calibration processes. Concrete Damaged Plasticity Model (CDPM) defined the complex nonlinear behavior of concrete, and the GFRP reinforcement was assumed to be linearly elastic. According to the test results, the deformation capacity of HCC increased by 6% as the diameter of the hollow holes increased and The column reinforced with steel had a maximum axial compressive strength that was 3% higher than the column reinforced with GFRP.