Improving the Methodology for Calculating the Parameters of Hump Yards
https://doi.org/10.30932/1992-3252-2019-17-4-90-97
Abstract
The paper presents a new approach to selection of design standards in design of hump yards, which are among the most important elements of railway stations. The height of gravity hump is a key parameter to ensure succesful and safe operations of separating railway cars at stations. Estimations of the gravity hump’s height are influenced mostly by the path length and the value of the main specific resistance to movement of the estimated free axles.
Following currently changing structure of the processed car flow at stations, it is necessary to update the current methods. The objective of the study is to update the existing method of choosing of estimated free axle and estimated point while calculating the estimated height of marshalling gravity humps.
Following the results of the study that used statistical and mathematical analysis the weight of the estimated free axle is proposed to be determined by the average value of the total car flow processed at the hump yard, and that calculations of estimated path length and estimated point should take into account the useful length and slopes of the sorting tracks.
The application of the proposed changes in the methodology for determining the required height of gravity humps will help to increase the efficiency and safety of their operation. The methodology of the study, while its conclusions in the form of calculated values are intended for Russian railways, can be applied for conducting similar analysis at any railway
Following currently changing structure of the processed car flow at stations, it is necessary to update the current methods. The objective of the study is to update the existing method of choosing of estimated free axle and estimated point while calculating the estimated height of marshalling gravity humps.
Following the results of the study that used statistical and mathematical analysis the weight of the estimated free axle is proposed to be determined by the average value of the total car flow processed at the hump yard, and that calculations of estimated path length and estimated point should take into account the useful length and slopes of the sorting tracks.
The application of the proposed changes in the methodology for determining the required height of gravity humps will help to increase the efficiency and safety of their operation. The methodology of the study, while its conclusions in the form of calculated values are intended for Russian railways, can be applied for conducting similar analysis at any railway
About the Authors
I. P. Starshov
Russian University of Transport
Russian Federation
Russian Federation
Starshov, Ivan P. – Ph.D. (Eng), associate professor of the department of railway stations and transport junctions
Moscow
V. A. Kobzev
Infrastructure Design and Development Bureau – a branch of JSC Russian Railways
Russian Federation
Kobzev, Valery A. – D.Sc. (Eng), professor, leading technologist
Russian Federation
Kobzev, Valery A. – D.Sc. (Eng), professor, leading technologist
E. I. Sychyov
Russian University of Transport
Russian Federation
Sychyov, Evgeny I. – Ph.D. (Eng), associate professor of the department of railway stations and transport junctions
Russian Federation
Sychyov, Evgeny I. – Ph.D. (Eng), associate professor of the department of railway stations and transport junctions
References
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Review
For citations:
Starshov I.P., Kobzev V.A., Sychyov E.I. Improving the Methodology for Calculating the Parameters of Hump Yards. World of Transport and Transportation. 2019;17(4):90-97. https://doi.org/10.30932/1992-3252-2019-17-4-90-97
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