Modeling of railway track alignment during operation

Abstract

   The railway track is an object of capital construction. After the railway track is put into operation, its spatial data and geometric parameters change over time. This is due to the effects caused, first of all, by rolling stock passing through it. During subsequent operation after certain repair periods and in compliance with the repair assignment criteria, work is carried out to restore the geometry of the track and, if necessary, the roadbed to a standard state. These works are associated with the displacement of the track in the longitudinal profile and plan to give the railway line a regulatory state.
   Taking into account the increase in cargo transportation and train speeds, the requirements for the maintenance of railway tracks become stricter. You need to increase the radii of the path portions of curves in plan view, extend the spiral lengths, and extend the straight inserts between adjacent curves.
   When designing repairs and, if necessary, reconstructions of railway lines, work must be carried out in accordance with regulatory requirements. This condition can be fulfilled by fixing the axes of the railway tracks in rectangular coordinate systems. The article proposes a program that allows you to generate the position of the path axis in plan in coordinate space with a given set of source data. The program provides for the ability to purposefully shift the coordinates of the points of the path axis from the correct geometric shape to simulate the behavior of the path during operation. At a given distance, sets of points is created corresponding to the transverse outline of the roadbed, along which a digital terrain model is built using specialized programs.