Resumo
An increase in train speed generates amplified track deflection. With higher speed, larger strains are induced within the track and subgrade structures. This results in nonlinear behaviour of material properties, particularly the soil stiffness. In railway engineering, it is challenging to deal with these high levels of amplification because the deep wave propagation within the track and underlying soil structures is complicated. Therefore, this paper investigates the influential variables that cause a significant impact on the dynamic amplification of the railway. Four modelling strategies used to generate findings into the problems of railway track dynamics and track-soil nonlinearity. The four types of model are analytical, combined analytical–numerical, 2.5D finite element and 3D finite element. These four models are used to analyse the cases of homogenous half-space soils, homogenous soils above bedrock, layered soils, low-stiffness soil layers and track-soil nonlinearity. The analysis results provide a better understanding of wave propagation characteristics within the subgrade structures. This can be useful for consideration of the design or improvement of railway track structures and earthworks.
Idioma original | Inglês |
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Título da publicação do anfitrião | Advances in Transportation Geotechnics IV - Proceedings of the 4th International Conference on Transportation Geotechnics |
Editores | Erol Tutumluer, Soheil Nazarian, Imad Al-Qadi, Issam I. A. Qamhia |
Editora | Springer Science and Business Media Deutschland GmbH |
Páginas | 37-48 |
Número de páginas | 12 |
ISBN (impresso) | 9783030772338 |
DOIs | |
Estado da publicação | Publicadas - 2022 |
Publicado externamente | Sim |
Evento | 4th International Conference on Transportation Geotechnics, ICTG 2021 - Chicago Duração: 23 mai. 2021 → 26 mai. 2021 |
Série de publicação
Nome | Lecture Notes in Civil Engineering |
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Volume | 165 |
ISSN (impresso) | 2366-2557 |
ISSN (eletrónico) | 2366-2565 |
Conferência
Conferência | 4th International Conference on Transportation Geotechnics, ICTG 2021 |
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País/Território | United States |
Cidade | Chicago |
Período | 23/05/21 → 26/05/21 |
Nota bibliográfica
Publisher Copyright:© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.