Adjustment of the longitudinal profile of the summit yard tracks based on the assessment of the cuts movement speed
https://doi.org/10.52170/1815-9265_2024_72_58
Abstract
The safety of train dissolution on hump yards plays an important role in the transportation process of railway transport and must certainly be ensured. One of the important conditions for the safe operation of hump yards is the collision of wagons in the sorting yard at a permissible speed.
When calculating the hump yards, the slopes of the tracks of the summit yard are assumed to be 0.6 ‰ for the entire length except for the last 100 m. Based on previous studies, it was found that the specific resistance to the movement of the cuts on the hump yard is significantly less than is accepted in regulatory documents. In a number of works it's proposed to revise the normative values of specific resistance to cuts movement. The article deals with the question of how this fact affects the movement of cuts in the sorting yard.
It was found that the slopes of the sorting yard tracks 0.6 ‰ can be accelerating for a number of cuts. This leads to the fact that there is a possibility of exceeding the collision speed of the cuts with wagons standing on the tracks of the yard, compared with the permissible values. This can happen even if the cuts are released from the yard braking position at a minimum speed.
To exclude such cases, it is proposed to design the sorting yard tracks on a horizontal platform. This will avoid exceeding the permissible collision speed for good runners. For the rest of the cuts, there will be no significant changes in the speed limit in the sorting yard. As an alternative option it’s proposed to design only the first 100 m of the sorting yard tracks on a gradient of 0.6 ‰.
About the Authors
S. A. Bessonenko
Siberian Transport University
Russian Federation
Russian Federation
Sergey A. Bessonenko – Professor of the Operational Management Department, Doctor of Engineering
Novosibirsk
A. A. Klimov
Siberian Transport University
Russian Federation
Russian Federation
Alexander A. Klimov – Associate Professor of the Railway Stations and Junctions Department, Candidate of Engineering
Novosibirsk
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Review
For citations:
Bessonenko S.A., Klimov A.A. Adjustment of the longitudinal profile of the summit yard tracks based on the assessment of the cuts movement speed. Bulletin of Siberian State University of Transport. 2024;(5):58-64. (In Russ.) https://doi.org/10.52170/1815-9265_2024_72_58
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