TY - GEN
T1 - Influence of train composition on crack propagation at structural components of welded railway bridges
AU - Siebert, Dorina
AU - Radlbeck, Christina
AU - Mensinger, Martin
N1 - Publisher Copyright:
© 2023 IABSE. Published by American Chemical Society.
PY - 2023
Y1 - 2023
N2 - The application of fracture mechanics allows a detailed assessment of structural details of existing railway bridges. By using crack propagation calculations, the residual service life and respective safe inspection intervals can be determined. For this purpose, cyclic loading due to train passings is needed as an input parameter. Furthermore, an initial crack length and material parameters need to be assumed. In this paper, the focus lies on the loadings generated by each passing train. The influence of single trains as well as the composition of trains and their order on crack propagation is investigated. Train models in the Eurocode [1] are considered and the effects are analysed in the frame of linear elastic fracture mechanics. Combined with the span length, the influence of service trains is varying and an impact of train composition is present. Sequence effects are if at all only slightly visible and therefore may be neglected within the considered calculations.
AB - The application of fracture mechanics allows a detailed assessment of structural details of existing railway bridges. By using crack propagation calculations, the residual service life and respective safe inspection intervals can be determined. For this purpose, cyclic loading due to train passings is needed as an input parameter. Furthermore, an initial crack length and material parameters need to be assumed. In this paper, the focus lies on the loadings generated by each passing train. The influence of single trains as well as the composition of trains and their order on crack propagation is investigated. Train models in the Eurocode [1] are considered and the effects are analysed in the frame of linear elastic fracture mechanics. Combined with the span length, the influence of service trains is varying and an impact of train composition is present. Sequence effects are if at all only slightly visible and therefore may be neglected within the considered calculations.
KW - Paris' law
KW - assessment of existing bridges
KW - crack propagation calculations
KW - linear elastic fracture mechanics (LEFM)
KW - load sequence effects
KW - train composition
KW - welded railway bridges
UR - http://www.scopus.com/inward/record.url?scp=85182591443&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85182591443
T3 - IABSE Congress, New Delhi 2023: Engineering for Sustainable Development, Report
SP - 227
EP - 235
BT - IABSE Congress, New Delhi 2023
PB - International Association for Bridge and Structural Engineering (IABSE)
T2 - 23rd IABSE Congress New Delhi 2023: Engineering for Sustainable Development
Y2 - 20 September 2023 through 22 September 2023
ER -