scholarly journals Investigation of the influence of the state of the railway track in terms of softness and safety of trains

2017 ◽  
Vol 0 (14) ◽  
Author(s):  
M. B. Kurhan ◽  
D. Kurhan ◽  
S. Baidak ◽  
N. Khmelevska
Keyword(s):  
The State ◽  
Railway Track

The problem of sand drifts on railways

Innotrans ◽  
2021 ◽  
pp. 32-36
Author(s):  
Mahamajon M. Mirakhmedov ◽  
Keyword(s):  
Negative Impact ◽  
The State ◽  
Railway Track ◽  
Limit States ◽  
Protective Measures ◽  
Visual Monitoring ◽  
Sand Drift ◽  
Train Safety

The sand drift of the railway track and the blowing of the roadbed negatively affect the elements of the track infrastructure to such an extent that they reach the limit states at which it becomes impossible for them to continue functioning. This leads to a violation of train safety. To assess the negative impact of sand and determine the necessary protective measures, a method of visual monitoring of the state of the track is proposed.

scholarly journals The determination of the repairs of railway track considering the reliability and risk level

2020 ◽  
Vol 157 ◽  
pp. 06031
Author(s):  
Nikolai Kovalenko ◽  
Elena Grin ◽  
Nina Kovalenko
Keyword(s):  
Life Cycle ◽  
Service Life ◽  
Life Cycle Cost ◽  
The State ◽  
Railway Track ◽  
Main Element ◽  
Risk Level ◽  
Standard Service

The method of predictive calculations of the state of the rails as the main element of assessing the state of the track when planning major repairs of the track is given. With a standard service life of 600 to 700 million tons gross, it is necessary to predict the number of defective rails on the track when increasing the service life to 1100 million tons gross (considering local rail replacement during intermediate repairs). The polygon for assigning repairs is determined by the number of “Windows” that can be provided per week on the section. The projected increase in the work of the track causes the need to increase life cycle cost depreciation charges for the formation of the repair Fund for capital repairs by 30-35%.

Modeling the State of a Railway Track Foundation by Seismic Methods

2018 ◽  
Vol 54 (6) ◽  
pp. 682-690 ◽  
Author(s):  
N. K. Kapustian ◽  
G. N. Antonovskaya ◽  
I. M. Basakina ◽  
A. V. Danilov
Keyword(s):  
The State ◽  
Railway Track ◽  
Seismic Methods

Technique for Construction of the Cap Beam of the Door-Shape Piers of an Overpass Transversal to the Contact Wire of an Existing Railway

2012 ◽  
Vol 178-181 ◽  
pp. 1596-1600
Author(s):  
Xin Min Xie
Keyword(s):  
Intellectual Property ◽  
Construction Method ◽  
The State ◽  
Railway Track ◽  
Normal Operation ◽  
Steel Beams ◽  
Steel Beam ◽  
Contact Wire ◽  
Type Steel ◽  
Electric Railway

In the construction of an overpass transversal to an existing electric railway, when the overpass pier is door-shaped, and, when the clearance height from the bottom of the door-shaped pier cap beam to the contact wire electrified body is too small to use steel beam or I-beam for holding the formwork and meet the safety need prescribed by the Ministry of Railways, an innovative construction method was employed, in which D-type steel beams, originally used for railway track reinforcement, was lifted to get across the contact wire and the catenary from above with a gap more than 33.8cm, resting on the top surface of temporary buttress, and letting stocky horizontal beams hold the formwork of cap beam, so as not to affect the normal operation of the existing electric railway. This innovative technique has been granted patent for invention by the State Intellectual Property Office.

scholarly journals Prognostics and Health Management for an Overhead Contact Line System - A Review

2020 ◽  
Vol 8 (3) ◽  
Author(s):  
Mehdi Brahimi ◽  
Kamal Medjaher ◽  
Mohammed Leouatni ◽  
Noureddine Zerhouni
Keyword(s):  
Contact Line ◽  
Health Management ◽  
The State ◽  
Railway Track ◽  
Prognostics And Health Management ◽  
Line System ◽  
Detection Algorithms ◽  
System A ◽  
Railway Industry ◽  
Geographically Distributed

The railway industry in European countries is standing a significant competition from other modes of transportation, particularly in the field of freight transport. In this competitive context, railway stakeholders need to modernize their products and develop innovative solutions to manage their asset and reduce operational expenditures. As a result, activities such as condition-based and predictive maintenance became a major concern. Under those circumstances, there is a pressing need to implement prognostics and health management (PHM) solutions such as remote monitoring, fault diagnostics techniques, and prognostics technologies. Many studies in the PHM area for railway applications are focused on infrastructure systems such as railway track or turnouts. However, one of the key systems to ensure an efficient operability of the infrastructure is the overhead contact line (OCL). A defect or a failure of an OCL component may cause considerable delays, lead to important financial losses, or affect passengers safety. In addition maintaining this kind of geographically distributed systemsis costly and difficult to forecast. This article reviews the state of practice and the state of the art of PHM for overhead contact line system. Key sensors, monitoring parameters, state detection algorithms, diagnostics approaches and prognostics models are reviewed. Also, research challenges and technical needs are highlighted

Railway Track Irregularity Data Mining and Time Series Trend Forecasting Research

2014 ◽  
Vol 666 ◽  
pp. 272-275 ◽  
Author(s):  
Ge Zhou
Keyword(s):  
Data Mining ◽  
Mathematical Model ◽  
Time Series ◽  
Data Analysis ◽  
The State ◽  
Railway Track ◽  
Trend Forecasting ◽  
Track Irregularity ◽  
Research Analysis

Railway track ride is one of the important indicators of the state of the tracks,This article making railway track irregularity data mining,The paper railway track irregularity data mining,data analysis implied regularity and A mathematical model to predict the time-series trends in research,Analysis of the data implied regularity and Build mathematical model getting on time series trend forecasting research.

scholarly journals Factors Influencing Development of Longitudinal Profile Deformations of the Roadbed in the Permafrost Zone

2020 ◽  
Vol 18 (2) ◽  
pp. 82-101
Author(s):  
V. V. Shapran ◽  
Z. T. Fazilova
Keyword(s):  
Global Climate Change ◽  
Global Climate ◽  
Climatic Conditions ◽  
The State ◽  
Permafrost Zone ◽  
Longitudinal Profile ◽  
Railway Track ◽  
Factors Influencing ◽  
Number Of Factors ◽  
Railway Infrastructure

Up to 2025 operations at the network of the Northern Railway (a subsidiary of JSC Russian Railways) may increase according to forecasts by 28,4 %, which is associated with construction of the Northern latitudinal railway. At the same time, a significant part of the Northern Railway is characterized by difficult climatic conditions: permafrost, polygonal-vein ice, peat bog areas, sharp temperature drops, significant amounts of precipitation in the form of snow. In the context of the planned increase in cargo intensity, the diagnostics of the roadbed in the zone of distribution of soils with weak bearing capacity against the backdrop of global climate change is of key character. The article is devoted to survey of the roadbed located in the permafrost zone. The results of diagnostics of the state of the railway track make it possible to forecast the state of railway infrastructure facilities, to categorize subsidence of the roadbed according to the degree of danger, and to develop measures for its stabilization. The objective of the work is to study the factors affecting degradation of the roadbed located in the permafrost zone. The methods of the work are based on field examinations of «sick» places of the roadbed and statistical forms of analysis of longitudinal profile deformations (subsidence) of the track. The result of this work is the study of influence of a number of factors on dev elopment of deformations of the roadbed located in the permafrost zone. In the future, it is planned, based on the results of diagnostics of the state of the railway track, to forecast the permafrost state of railway infrastructure facilities, to categorize subsidence of the roadbed according to the degree of danger, and to develop measures to stabilize it.

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

2020 ◽  
Vol 79 (5) ◽  
pp. 271-275
Author(s):  
V. O. Pevzner ◽  
A. I. Chechel’nitskiy ◽  
K. V. Shapet’ko ◽  
E. A. Sidorova ◽  
A. Yu. Slastenin
Keyword(s):  
Growth Rate ◽  
Energy Consumption ◽  
Traffic Safety ◽  
The State ◽  
Geometric Parameters ◽  
Longitudinal Profile ◽  
Railway Track ◽  
Transportation Process ◽  
State Analysis

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.

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