Large space structures are carried into space orbits in a folded densely packed position, whereas putting them into working position refers to the process of structure deployment. The ground-based deployment tryout appears to be extremely expensive, therefore, when developing deployable structures, methods that combine the ground-based tests of physical models of the structure and carrying out of mathematical experiments using designed models for calculation, which appropriately show how the structure behaves during the tests, have their special place. Simulation of such structures deployment during the ground-based tests is performed using as an example a physical model of the circle load-bearing folding frame with diameter of 4 m. A comparison of the results of calculations and the relevant ground-based tests findings helps clarify characteristics of the stops, which are used in the designed models for calculation. Using the designed models for calculation and the clarified stops characteristics, simulation of deployment of the physical model of the structure in the outer space environment is performed.