Nowadays, the use of composite columns in construction projects is more attention than in the past. The use of composite columns in the construction of airports, sports stadiums, marine and oil platforms is more than other projects. Due to the fact that during the operation of the mentioned projects, the possibility of incidents such as; Collision of a ship with a structure, a severe storm, in marine platforms or things like fire and explosion in all projects, and also on the other hand, the high importance of these structures requires researchers to research provide more about providing solutions to increase the resistance of composite columns in structures so that the structure can show more resistance against the above incidents. In this research, it has been tried by modeling samples with different parameters in the Abaqus finite element software, the effect of changing variables such as; Geometrical parameters, compressive strength of concrete and type of cross section of members; Determine the strength of composite columns against static load. After modeling the samples and analyzing and processing the results, it was found that; The use of square cross section in composite columns and also increasing the compressive strength of concrete used in these members will have a positive effect on the performance of composite members and these two items improve the resistance to static load by 19% and 10% respectively. to forgive Also, reducing the ratio of width to thickness (b/t) increases the strength and resistance of joints and improves the bearing capacity of the joint.