TY  - JOUR
PY  - 2019//
TI  - Train running safety on non-ballasted bridges
JO  - International journal of rail transportation
A1  - Arvidsson, Therese
A1  - Andersson, Andreas
A1  - Karoumi, Raid
SP  - 1
EP  - 22
VL  - 7
IS  - 1
N2  - 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/s² 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/s². 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.<p />  <p>Language: en</p>
LA  - en
SN  - 2324-8378
UR  - http://dx.doi.org/10.1080/23248378.2018.1503975
ID  - ref1
ER  -