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The study deals with a shunting impact of 13-4085 wagon platform to a TK25 tank container. In order to define the loads acting on the containers carrying structures, 3D computer models of the 1СС size container structures were designed, both version – for liquid and dry material transport. The virtual model consider a longitudinal force from the wagon automatic coupling, vertical and horizontal forces from the wagon – containers interaction and also vertical forces of the container fittings. For checking adequacy of the designed models, the container acceleration values was obtained in two scenarios - when fittings do not move relative to the fitting spots of a wagon, and also if their relative displacement is possible. Mathematical models of dynamic loads on these structures were solved in MathCad. Differential equations were solved by the Runge – Kutta method. Adequacy of the designed models was checked with an F-test. The calculation conducted made it possible to conclude that the hypothesis on the adequacy of the models was not rejected.