Influence of long irregularities of the longitudinal profile on traffic safety under conditions of intensification of the transportation process

Abstract

The key directions of intensification of the transportation process are described and their influence on the infrastructure is indicated. The concept of long irregularities of the longitudinal profile is defined and a method is proposed that allows one to study the geometric parameters and the growth rate of long irregularities. An assessment of the influence of long irregularities on energy consumption during the traction of trains is given.In the article, much attention is paid to the influence of long irregularities of the longitudinal profile on traffic safety. The article presents the results of the state analysis of the railway track section, where there was a derailment of the freight cars. The results of calculations of the level of forces arising in the automatic coupling and the coefficients of the vertical dynamics of the first stage of suspension for cars in a train when moving uphill along long irregularities are presented. Based on the results of the research, the main conclusions are formulated and the direction of further research is proposed.

Assessment of the intensity of accumulation of residual deformations of the main platform of the roadbed in the areas of circulation of heavy and long-component trains

“…На уровень силового воздействия влияет множество факторов, одним из которых является наличие неровностей на пути, которые формируют соответствующие силы инерции от подвижного состава. Неровности на пути формируются за счет деформаций верхнего строения пути (подрельсовые прокладки и балласт) и основной площадки земляного полотна [2].…”

Indicators of the force interaction of the track and rolling stock when a freight car runs on long irregularities, taking into account the action of longitudinal forces

“…Сегодня проводятся исследования по влиянию длинных неровностей продольного профиля на динамику движения поездов [4], при этом наиболее интересной задачей является рассмотрение влияния продольных сил, возникающих в грузовых тяжеловесных поездах, на показатели силового взаимодействия пути и подвижного состава при движении грузовых вагонов по длинным неровностям [5].…”