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Train running safety on non-ballasted bridges
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0003-2372-5234
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Swedish Transport Adm Trafikverket, Solna, Sweden..ORCID iD: 0000-0002-8926-2140
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
2019 (English)In: International Journal of Rail transportation, ISSN 2324-8378, E-ISSN 2324-8386, Vol. 7, no 1, p. 1-22Article in journal (Refereed) Published
Abstract [en]

The train running safety on non-ballasted bridges is studied based on safety indices from the vertical wheel-rail forces. A 2D train- track-bridge interaction model that allows for wheel-rail contact loss is adopted for a comprehensive parametric study on high-speed passenger trains. The relation between bridge response and vehicle response is studied for more than 200 theoretical bridges in 1-3 spans. The bridge's influence on running safety and passenger comfort is differentiated from the influence of the track irregularities. The Eurocode bridge deck acceleration limit for non-ballasted bridges is 5 m/s(2) based on the assumed derailment risk at 1 g from wheel-rail contact loss. This study shows that the running safety indices are not compromised for bridge accelerations up to 30 m/s(2). Thus, accelerations at 1 g do not in itself lead to contact loss and there is potential to enhance the Eurocode safety limits for non-ballasted bridges.

Place, publisher, year, edition, pages
Taylor & Francis, 2019. Vol. 7, no 1, p. 1-22
Keywords [en]
Railway bridge, slab track, deck acceleration, train-track-bridge interaction, wheel-rail force, running safety
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-254133DOI: 10.1080/23248378.2018.1503975ISI: 000469852200001Scopus ID: 2-s2.0-85052582924OAI: oai:DiVA.org:kth-254133DiVA, id: diva2:1327938
Note

QC 20190620

Available from: 2019-06-20 Created: 2019-06-20 Last updated: 2019-06-20Bibliographically approved

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Arvidsson, ThereseAndersson, AndreasKaroumi, Raid

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