Influence of bulk cargo pressure on container stability during transportation by railroad ferry

Abstract

Efforts of bulk cargo expansion on the walls of the container during transportation as a part of a combined train by rail ferry are determined. The Coulomb method with Sinelnikov correction was used as the calculation. Studies have been conducted on a grain loaded 1C container. It is considered that the transportation of the container is carried out on the railway ferry "Heroes of Shipka", the waters of the Black Sea. Dynamic loading, which acts on the container during fluctuations of the railway ferry in the conditions of onboard swing, is taken into account in determining the forces of decomposition. At the same time three schemes of movements of the container placed on the wagon platform during fluctuations of the railway ferry are considered: absence of movements of the wagon platform and containers relative to the starting position during the fluctuations of the railway ferry (I scheme); the presence of displacements of the wagon-platform during the fluctuations of the railway ferry, taking into account the immobility of the containers relative to the frame of the wagon-platform (scheme II); the presence of displacement of the platform wagon relative to the deck and containers relative to the frame of the wagon platform (scheme III). The results obtained are taken into account in determining the stability of the container relative to the frame of the wagon platform. The angles of roll of the ferry at which the stability of the container relative to the frame of the wagon platform are determined. It is established that the stability of the container relative to the frame of the wagon platform is provided at the angles of roll of the ferry – up to 10° (I scheme), up to 8° – (II scheme), up to 6° (III scheme). This necessitates the improvement of the interaction scheme of the container with the wagon platform to ensure the safety of carriage by rail. The researches carried out will help to increase the safety of transportation of containers as part of combined trains by rail ferries.