Non-Linear Finite Element Analysis of Circular Bamboo Fiber Tube Concrete-Filled Composite Column

Abstract

The structural composite construction techniques find increasingly wide applications in bridges, ramp, buildings and other different area throughout the world focusing on the composites systems. Composite structures are created by combining two or more structural elements to act as a single combined structural unit, where each element behaves in structurally efficient manner. Due to their superior confining effect, concrete-filled tube columns have been widely used in building construction. Bamboo fiber tube is suggested to replace steel and fiber-reinforced polymer tube as the confining jacket acting on concrete due to renewable material, low carbon content and economical in building construction. The existing research on the replacement of steel tubes with bamboo fiber tubes in a concrete filled composite column is insufficient and cannot address all behavioral aspects of the column. So, additional investigation is important to narrow this gap by adding other parameters to the bamboo fiber tube concrete-filled composite column. This study investigates the non-linear finite element analysis of bamboo fiber tube concrete-filled composite columns. The results obtained from finite element analysis were carried out and verified with the experiment results to validate the finite element analysis software known as ABAQUS 2023. The effects of the parameters investigated are eccentric loading value, bamboo fiber tube diameter, load application, and bamboo fiber tube thickness. As a result of the parametric investigation of this study, the efficiencies of bamboo fiber tube confinement increase with an increasing eccentricity of the axial load of the bamboo fiber tube concrete-filled composite column. The axial stress capacity enhancement ratio of the bamboo fiber tube concrete-filled composite column decreases with increasing the diameter of the bamboo fiber tube. The axial load capacity of the bamboo fiber tube concrete-filled composite column increases when the load is applied to the bamboo fiber tube concrete-filled composite column compared to the core concrete column. The ductility behavior of the column increases when bamboo fiber tube thickness increases for the bamboo fiber tube concrete-filled composite column.