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Estimating Empirical Equation for Train Movement Using Operational Data


Affiliations
1 Department of Civil Engineering, Higher Technology Institute (HTI), 6 October City, Giza, Egypt
2 Department of Civil Engineering, Ain Shams University, Cairo, Egypt
 

Train safety and operational efficiency are enhanced by the ability to understand the behavior of trains under varying conditions. The aim of the research is to describe a method to develop empirical formula to calculate four railway dynamic concepts: Rolling and air resistance, Curve resistance, Coefficient of friction between wheel and rail, and coefficient of friction between wheel and braking shoes using operational data.

To realize this goal, field survey and data were collected for track profile, rolling stock characteristics, train composition and the download of Automatic Train Control disc for some trips for different lines at different train types (passenger – empty and loaded freight) during the four seasons (summer , fall , winter and spring).

In the present paper, investigation of passenger train runs on Cairo- Alexandria Railway line were applied as a case study, using operational data from trains in regular service.


Keywords

Railway Dynamic, Rolling Stock, Rolling and Air Resistance Curve Resistance, Grade Resistance, Coefficient of Adhesion, Coefficient of Friction, Automatic Train Control(ATC).
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  • Estimating Empirical Equation for Train Movement Using Operational Data

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Authors

Shymaa M. Elbakry
Department of Civil Engineering, Higher Technology Institute (HTI), 6 October City, Giza, Egypt
Haytham N. Zohny
Department of Civil Engineering, Ain Shams University, Cairo, Egypt
Hany S. Riad
Department of Civil Engineering, Ain Shams University, Cairo, Egypt

Abstract


Train safety and operational efficiency are enhanced by the ability to understand the behavior of trains under varying conditions. The aim of the research is to describe a method to develop empirical formula to calculate four railway dynamic concepts: Rolling and air resistance, Curve resistance, Coefficient of friction between wheel and rail, and coefficient of friction between wheel and braking shoes using operational data.

To realize this goal, field survey and data were collected for track profile, rolling stock characteristics, train composition and the download of Automatic Train Control disc for some trips for different lines at different train types (passenger – empty and loaded freight) during the four seasons (summer , fall , winter and spring).

In the present paper, investigation of passenger train runs on Cairo- Alexandria Railway line were applied as a case study, using operational data from trains in regular service.


Keywords


Railway Dynamic, Rolling Stock, Rolling and Air Resistance Curve Resistance, Grade Resistance, Coefficient of Adhesion, Coefficient of Friction, Automatic Train Control(ATC).

References