Reconstruction of a section of the railway in order to increase the speed of trains

Abstract

The development of the growing freight turnover necessitates an increase in the carrying capacity of railway lines. Defined as the difference between the required and available carrying capacity, this can be achieved through organizational, technical and reconstruction measures. Organizational and technical measures include those aimed at using the reserves of carrying capacity and therefore not requiring significant costs. As a result, the mass and speed of train movement increases, station intervals decrease, the processing of trains is accelerated with their parking time at stations is reduced. Reconstruction activities are associated with the use of new equipment and construction work, which requires significant capital expenditures. Reconstruction of railways is carried out by stages in the most appropriate order, which reduces capital and transportation costs. To ensure the required throughput of the railway line, the most rational organizational, technical and reconstruction measures are selected on the basis of a technical and economic comparison of options. When developing a project design for the reconstruction of an existing railway, the following tasks are solved: optimization of the route position in plan and profile; choice of the technical equipment elements of the line, in particular; outlining the ways to increase the carrying capacity of the railway. In order to solve these and other problems of the design of railways, algorithmic methods are used to determine the mass of a train with a known longitudinal profile and a given locomotive, the speed and travel time of the train, the consumption of electrical energy for electric traction or diesel fuel for diesel traction. Such methods are called by general name of traction calculations, which are based on the general provisions of the train traction science.