Numerical studies on the influence of column reinforcements with soil-binders on railway tracks

A. Francisco, A. Paixão, Eduardo Fortunato, J. N. Varandas

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

Abstract

The reinforcement of railway track foundations, through injection of binders, without the need of removal of track components (i.e. rails, sleepers and ballast) has many advantages compared to traditional approaches, which normally are more complex, costly and strongly affect train operations. To contribute to a deeper understanding of issues associated with soil-binder column reinforcements, numerical studies were developed to analyse and compare different column layouts and to assess the effect of such reinforcements on the dynamic train-track interaction. To that aim, two three-dimensional numerical programs were used. Aspects of the train-track interaction and values of stresses and displacements on the track and trackbed layers are analysed and discussed. The results suggest that in similar problems of track platforms with uneven track stiffness, it is important to take into account the non-linear elastic behaviour of the ballast to obtain a more accurate three-dimensional load distribution.

Original languageEnglish
Title of host publicationNumerical methods in geotechnical engineering IX
EditorsAntónio S. Cardoso, José L. Borges, Pedro A. Costa, António T. Gomes, José C. Marques, Castorina S. Vieira
PublisherCRC Press/Balkema
Pages1431-1438
Number of pages8
Volume2
ISBN (Print)9781138544468
Publication statusPublished - 2018
Event9th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2018 - Porto, Portugal
Duration: 25 Jun 201827 Jun 2018

Conference

Conference9th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2018
CountryPortugal
CityPorto
Period25/06/1827/06/18

Fingerprint Dive into the research topics of 'Numerical studies on the influence of column reinforcements with soil-binders on railway tracks'. Together they form a unique fingerprint.

  • Cite this

    Francisco, A., Paixão, A., Fortunato, E., & Varandas, J. N. (2018). Numerical studies on the influence of column reinforcements with soil-binders on railway tracks. In A. S. Cardoso, J. L. Borges, P. A. Costa, A. T. Gomes, J. C. Marques, & C. S. Vieira (Eds.), Numerical methods in geotechnical engineering IX (Vol. 2, pp. 1431-1438). CRC Press/Balkema.