Dynamic and static behavior of a steel covered column

Abstract

Composite columns are used to increase the strength for a given cross sectional dimension; stiffness leading to reduced slenderness and buckling resistance, corrosion and fire resistance in the case of concrete encased columns. Also, they provide a formwork for concrete filled steel tubes and economical solutions with regard to material costs. They are effectively started to use in the world. This study presents the dynamic and static behavior assessment of a steel covered column. In the content of the study, full concrete filled rectangular steel tube column as a composite column is selected for numerical analysis and its finite element model is constituted using ANSYS software. Dynamic behavior of the model is obtained performing modal analysis. The natural frequencies and mode shapes are obtained as dynamic characteristics to understand dynamic behavior. Then the model is statically performed. In static analysis, both of vertical and lateral loads are applied to models. The displacement and stress changes in some critical nodes and sections and contour diagrams are reported by graphs and figures after static analysis.