Published Paper Details:

This paper comprises an analytical study of double skinned corrugated columns (DSCC) of square sections filled with concrete. This analysis reveals the compressive nature of the Concrete Filled Double Skin Tube (CFDS) columns, in which their inner and outer skins were replaced with corrugated plates. A finite component modeling framework has been developed to obtain the response of CFDST columns with corrugated plates. Analyses on the specimens were done by applying axial and lateral loads. The parameters varied for columns were, slenderness ratio and grade of concrete. The specimens used to investigate the compressive and ductile behaviour of the columns. Various characteristics such as stiffness and failure mode are also discussed with the help of load- deflection curves obtained from ANSYS 16.1. The end stiffeners are provided at both ends of columns. The analyses of DSCC with and without end stiffeners were done. As DSCC with end stiffeners are performs better, another two models were developed. One is aligning corrugated plates in parallel and another one is in perpendicular to inner tubes with end stiffeners. From the analysis corrugated plates with parallel is chosen as the best model. Remaining parameter studies has been done by using this model throughout the project.