Woodward, P.K., Brennan, A., Laghrouche, O. et al. (3 more authors) (2022) Geotechnical Centrifuge and Full-Scale Laboratory Testing for Performance Evaluation of Conventional and High-Speed Railway Track Structures. In: Lecture Notes in Civil Engineering. 4th International Conference on Transportation Geotechnics, 23-26 May 2021, Chicago, United States. Lecture Notes in Civil Engineering, 165 . Springer International Publishing , Cham, Switzerland , pp. 957-968. ISBN 9783030772338
Abstract
The development of high-speed railways is progressing at a very rapid pace worldwide. For example, in the UK, the construction of Phase 1 (225 km) of the HS2 line has now begun, and it will have a maximum operational speed of 360 km/h. In this paper, the performance of a geosynthetic-reinforced soil retaining wall (GRS-RW) is presented for both ballasted track and concrete slab track using full-scale laboratory testing and geotechnical centrifuge modelling. In the full-scale testing, the geo-pavement and railways accelerated fatigue testing (GRAFT II) facility at Heriot-Watt University is used. It operates using six independent hydraulic actuators over three full-size sleepers to simulate the passage of a moving train. The tested GRS-RW structures consist of well-compacted subgrade and a frost protection layer designed to HS2 standards. Results are recorded in terms of deflections, accelerations, total settlement and transient stresses at various locations of the structure model. Whilst the full-scale GRAFT II testing elucidates behaviour of the track and wall, in order to study how the foundation subsoil may interact with the structure, a series of small-scale experiments were carried out in the geotechnical centrifuge by the University of Dundee. By creating small-scale physical models of the GRS-RW and foundation and by increasing gravity, the centrifuge was used to simulate the large induced stresses. Short- and long-term deformations of the wall and foundation were also monitored. Comparisons between the full-scale and centrifuge modelling are presented.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Feb 2024 15:09 |
Last Modified: | 15 Feb 2024 15:09 |
Published Version: | https://link.springer.com/chapter/10.1007/978-3-03... |
Status: | Published |
Publisher: | Springer International Publishing |
Series Name: | Lecture Notes in Civil Engineering |
Identification Number: | 10.1007/978-3-030-77234-5_78 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:209198 |