Permissible frost heaving of the sleeper base, taking into account the spring thawing of the track during the modernization of the eastern polygon
https://doi.org/10.52170/1815-9265_2022_60_21
Abstract
Increasing the load-bearing capacity of the sleeper base of the track in the difficult engineering and geological conditions of Siberia is one of the main tasks in the modernization of the eastern polygon. The issue of permissible frost heaving is relevant for the design of anti-spring structures during the construction of new railways, as well as their elimination on existing lines. The existing gradation of permissible frost heaving should be further detailed, taking into account the variety of engineering and geological features of the eastern region.
Spring thawing is the most dangerous period of the year. As the path thaws, frost heaving decreases. Thawing of frozen soils is accompanied by a decrease in their bearing capacity and the formation of subsidence of the base. As a result, seasonal deformations cause considerable damage to the road infrastructure in Siberia and hinder the smooth and safe movement of trains at set speeds. Therefore, when determining the permissible frost heaving, it is necessary to take into account the spring thawing of the sleeper base.
About the Author
G. K. Shchepotin
Siberian Transport University
Russian Federation
Russian Federation
George K. Shchepotin – Doctor of Engineering, Professor of the Department of Track and Track Facilities
Novosibirsk
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Review
For citations:
Shchepotin G.K. Permissible frost heaving of the sleeper base, taking into account the spring thawing of the track during the modernization of the eastern polygon. Bulletin of Siberian State University of Transport. 2022;(1):21-28. (In Russ.) https://doi.org/10.52170/1815-9265_2022_60_21
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