Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Full-Scale Laboratory Testing Of A Geosynthetically Reinforced Soil Railway Structure

Esen, AF, Woodward, PK, Laghrouche, O, Cebasek, TM, Brennan, AJ, Robinson, S and Connolly, DP (2021) Full-Scale Laboratory Testing Of A Geosynthetically Reinforced Soil Railway Structure. Transportation Geotechnics, 28. ISSN 2214-3912

[img]
Preview
Text
FULL-SCALE LABORATORY TESTING - Revised.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (2MB) | Preview

Abstract

Railway lines typically use traditional sloping embankments as the principal means of track support. However, the use of Geosynthetically Reinforced Soil (GRS) systems have gained popularity as alternatives to conventional embankments, particularly for high-speed lines in Japan. This system requires less ground stabilization/improvement and less land take than conventional embankments due to its smaller base area. This research investigates the immediate and long-term settlement behaviour of a Geosynthetically Reinforced Soil with Retaining Wall (GRS-RW) system subject to cyclic loading for two track forms: a concrete slab track and a ballasted track. First, a three-sleeper concrete slab section is constructed at full scale under controlled laboratory conditions, followed by a ballasted track. Both are supported on a 1.2m deep subgrade and a frost protection layer in accordance with railway design standards. Two different axle load magnitudes are applied statically, and then cyclically/dynamically, using 6 actuators to replicate moving train axle loads. It is observed that the slab track performs significantly better in terms of elastic and plastic deformation under both static and cyclic loading. Overall, the amplitude of the rail displacement under an individual cycle loading was approximately 25% lower for the slab track and the amplitude of the sleeper displacement on the ballasted track was approximately 6-7 times higher.

Item Type: Article
Uncontrolled Keywords: 0905 Civil Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Civil Engineering & Built Environment
Publisher: Elsevier BV
Date Deposited: 15 Mar 2021 12:03
Last Modified: 01 Mar 2022 00:50
DOI or ID number: 10.1016/j.trgeo.2021.100526
URI: https://researchonline.ljmu.ac.uk/id/eprint/14609
View Item View Item