Abstract
Analysis of mechanical behavior of ballast shoulder of railway track reinforced by polyurethane binding agent has been performed by the method of finite-element simulation Limitation of the model of linear-elastic properties of geocomposite has been displayed. Dependence of elasticity modulus of geocomposite on deformation value has been suggested. Influence of penetration depth of polyurethane binding agent on behavior of railway track construction under different train loads has been studied.
Highlights
In the conditions of organizing the traffic of heavy freight and passenger high-speed trains, the level of force impact on the railway track inevitably increases
The computer simulation of mechanical behavior of the railway ballast shoulder containing the geocomposite was performed in Comsol Multiphysics software
The analysis of the mechanical behavior of the shoulder of the ballast prism of the railway track reinforced with polyurethane binding agent is carried out by the method of finite element modeling
Summary
In the conditions of organizing the traffic of heavy freight and passenger high-speed trains, the level of force impact on the railway track inevitably increases. A possible solution to the problem of increasing the lateral resistance to the movement of sleepers under the impact of the train load is to strengthen the ballast shoulders. Various technical solutions are used to provide the required indicators of stability and reliability of the railway track These include the optimization of the friction properties of the permanent way by changes in its geometric dimensions, such as thickness and width along the top, as well as the shape of the ballast shoulder itself [4, 5]. It is found that the formation of the geocomposite from the strengthened by the polymer ballast leads to a significant increase in the contribution of the ballast shoulder to resistance to transverse shear due to the formation of the geocomposite beam. Influence of penetration depth of binding agent on mechanical behavior of railway track construction under different train loads is being studied
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