Stability and Carrying Capacity of the Steel Tubes

The paper presents information about one part of the theoretical research oriented to determine the impact of loss the stability of rectangular concrete-filled steel tubes in terms of their resistance. This part deals with the theoretical analysis of the influence of imperfections on the local buckling and carrying capacity of short axially compressed cold-formed rectangular steel tubes. The numerical models of the mentioned above structures in software ABAQUS were presented in the work. The different support conditions of loaded edges of the steel section were considered in the models. The results of modelling were compared with the results of calculation of the carrying capacity of such structures according to standard Eurocode 3.