Abstract
Railway freight services can be added to lines that have previously only be used for passenger services, with the aim of increasing network capacity. Freight trains have larger axle loads and thus can have a negative effect on track longevity, particularly on ballasted lines supported by sub-optimal ground conditions. This is because larger subgrade strains are generated, which can result in non-linear behavior. Therefore it is important to be able to determine the effect of the new rolling stock on track behavior before operation. This is challenging to do because non-linear soil behavior is challenging to simulate. As a solution, this paper presents an equivalent non-linear, thin layer element soil model, coupled to an analytical track model. It is capable of quickly and accurately computing the response of non-linear track behavior. The model is used to investigate the effect of introducing freight wagons on an existing ballasted passenger line with poor ground conditions.
Original language | English |
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Title of host publication | Numerical methods in geotechnical engineering IX |
Editors | António S. Cardoso, José L. Borges, Pedro A. Costa, António T. Gomes, José C. Marques, Castorina S. Vieira |
Publisher | CRC Press/Balkema |
Chapter | 68 |
Pages | 1445-1449 |
Number of pages | 5 |
Volume | 2 |
ISBN (Electronic) | 9780429446924 |
ISBN (Print) | 9781138332034 |
DOIs | |
Publication status | Published - 2018 |
Event | 9th European Conference on Numerical Methods in Geotechnical Engineering 2018 - Porto, Portugal Duration: 25 Jun 2018 → 27 Jun 2018 |
Conference
Conference | 9th European Conference on Numerical Methods in Geotechnical Engineering 2018 |
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Abbreviated title | NUMGE 2018 |
Country/Territory | Portugal |
City | Porto |
Period | 25/06/18 → 27/06/18 |
ASJC Scopus subject areas
- Numerical Analysis
- Geotechnical Engineering and Engineering Geology