The use of multiple models to analyse railway track ground dynamics

P. Chumyen, D. P. Connolly, K. Dong, P. A. Costa, P. J. Soares, P. K. Woodward

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With the increases in train speed in recent decades, it is important to define the track-ground critical velocity to prevent high track dynamic amplification. This is affected by wave propagation in the soil layers and track supporting the moving load. Therefore, this paper investigates the important variables that influence the critical velocity and dynamic amplification based on three case studies of track-ground dynamic problems, which are: the presence of low stiffness soil layer, track shakedown and soil improvement. Three modelling strategies (analytical, hybrid analytical-numerical and 2.5D numerical) are used to analyse the different track-soil problems. The findings provide a better understanding of critical velocity and dynamic amplification. These are useful when considering a new track-ground design or improving the existing railway lines.

Original languageEnglish
Title of host publicationEURODYN 2020
Subtitle of host publicationProceedings of the XI International Conference on Structural Dynamics
EditorsManolis Papadrakakis, Michalis Fragiadakis, Costas Papadimitriou
PublisherEuropean Association for Structural Dynamics
Pages2718-2728
Number of pages11
Volume2
ISBN (Print)9786188507227, 9786188507210
DOIs
Publication statusPublished - 2020
Event11th International Conference on Structural Dynamics 2020 - Virtual, Athens, Greece
Duration: 23 Nov 202026 Nov 2020

Conference

Conference11th International Conference on Structural Dynamics 2020
Abbreviated titleEURODYN 2020
Country/TerritoryGreece
CityVirtual, Athens
Period23/11/2026/11/20

Keywords

  • Analytical modelling
  • Critical Velocity
  • High-speed railway
  • Numerical Modelling
  • Track-ground dynamics behaviour

ASJC Scopus subject areas

  • Building and Construction
  • Architecture
  • Civil and Structural Engineering

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