A Multi-model Approach to Analyse Railway Track-Ground Dynamics and Soil Nonlinearity

C. Charoenwong, D. P. Connolly, K. Dong, P. Alves Costa, P. J. Soares, P. K. Woodward

Resultado de pesquisarevisão de pares

1 Citação (Scopus)

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 originalInglês
Título da publicação do anfitriãoAdvances in Transportation Geotechnics IV - Proceedings of the 4th International Conference on Transportation Geotechnics
EditoresErol Tutumluer, Soheil Nazarian, Imad Al-Qadi, Issam I. A. Qamhia
EditoraSpringer Science and Business Media Deutschland GmbH
Páginas37-48
Número de páginas12
ISBN (impresso)9783030772338
DOIs
Estado da publicaçãoPublicadas - 2022
Publicado externamenteSim
Evento4th International Conference on Transportation Geotechnics, ICTG 2021 - Chicago
Duração: 23 mai. 202126 mai. 2021

Série de publicação

NomeLecture Notes in Civil Engineering
Volume165
ISSN (impresso)2366-2557
ISSN (eletrónico)2366-2565

Conferência

Conferência4th International Conference on Transportation Geotechnics, ICTG 2021
País/TerritórioUnited States
CidadeChicago
Período23/05/2126/05/21

Nota bibliográfica

Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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