Short soil-binder columns in railway track reinforcement: three-dimensional numerical studies considering the train-track interaction

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Francisco, A (Author) Other; Paixao, A (Author) FEUP; Varandas, JN (Author) Other; Fortunato, E (Author) Other

Journal

Title: Computers and Geotechnics

Vol. 98

Pages: 8-16

ISSN: 0266-352X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00N-TWV

DOI: 10.1016/j.compgeo.2018.02.001

Abstract (EN): The authors present a numerical study on railway track subgrade reinforcement using short soil-binder columns through injection, below the ballast layer. A 3D FEM program developed in MATLAB that considers the dynamic train-track interaction and the non-linear elastic behaviour of the ballast is used to study the response of the train-track-substructure system and assess stresses in the subgrade. Results suggest that reinforcements have limited impact on the train-track interaction and reduce deviatoric stresses between columns, at the top of the foundation. This method may be particularly relevant in the rehabilitation of old single railway tracks.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9