Design of Railway Tracks in the Zone of Subgrade Adjoint to Strengthened Bridge Abutments

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Design of Railway Tracks in the Zone of Subgrade Adjoint to Strengthened Bridge Abutments

Lanis, Aleksey / Usov, Dmitriy / Razuvaev, Denis / Grebennikov, Ivan

Development of railway transport implies increased traffic intensity. A greatest impact due to this increase will be exerted on barrier regions, including the zone of subgrade adjoint to bridge abutments. In the zone of adjoint, there arises characteristic track unevenness primarily related with the drop of track stiffness at the junction between the reinforced concrete abutment and the subgrade and presenting a problem in ensuring track reliability. For solving this problem, in the present study specific features of railway-track designing in the zone of subgrade adjoint to bridge abutments were identified by modeling the deformation process at increased traffic intensity. For performing such modeling, a three-dimensional model of an operated high fill with a set of boundary conditions summarized in a situation matrix was proposed. Based on numerical modeling results, graphs of track subsidence with distance from the reinforced concrete abutment were plotted. An analysis of such graphs has allowed us to identify the deformation zones and the need for using variable-stiffness structures with locally increased and decreased track rigidity. The calculation by situations has revealed an insignificant impact of stiffness on the amount of actual track unevenness at a constant train speed, with the length of the unevenness more than two times exceeding the transition-zone length as specified in regulatory and technical documentation. The analysis of the graphs and the selection of optimal structures have made it possible to apply an integrated approach to the design of railway tracks in the zone of subgrade adjoint to bridge abutments.

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Dokumentinformationen

Titel :

Design of Railway Tracks in the Zone of Subgrade Adjoint to Strengthened Bridge Abutments

Weitere Titelangaben:

Lect. Notes in Networks, Syst.

Beteiligte:

Manakov, Aleksey (Herausgeber:in) / Edigarian, Arkadii (Herausgeber:in) / Lanis, Aleksey (Autor:in) / Usov, Dmitriy (Autor:in) / Razuvaev, Denis (Autor:in) / Grebennikov, Ivan (Autor:in)

Kongress:

International Scientific Siberian Transport Forum ; 2021 May 11, 2021 - May 14, 2021

Erschienen in:

International Scientific Siberian Transport Forum TransSiberia - 2021 ; Kapitel : 113 ; 1035-1043

Lecture Notes in Networks and Systems ; 402

Erscheinungsdatum :

2022-03-19

Format / Umfang :

9 pages

ISBN :

978-3-030-96380-4 , 978-3-030-96379-8

ISSN :