A study of geogrid-reinforced ballast using laboratory pull-out tests and discrete element modelling
This paper presents an evaluation of the behaviour of geogrid-reinforced railway ballast. Experimental large box pull-out tests were conducted to examine the key parameters influencing the interaction between ballast and the geogrid. The experimental results demonstrated that the triaxial geogrid ou...
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| Format: | Article |
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Taylor & Francis
2013
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| Online Access: | https://eprints.nottingham.ac.uk/2488/ |
| _version_ | 1848790797734903808 |
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| author | Chen, Cheng McDowell, Glenn R. Thom, N.H. |
| author_facet | Chen, Cheng McDowell, Glenn R. Thom, N.H. |
| author_sort | Chen, Cheng |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This paper presents an evaluation of the behaviour of geogrid-reinforced railway ballast. Experimental large box pull-out tests were conducted to examine the key parameters influencing the interaction between ballast and the geogrid. The experimental results demonstrated that the triaxial geogrid outperforms the biaxial geogrid and the geogrid aperture size is more influential than rib profile and junction profile. The discrete element method (DEM) has then been used to model the interaction between ballast and geogrid by simulating large box pull-out tests and comparing with experimental results. The DEM simulation results have been shown to provide good predictions of the pull-out resistance and reveal the distribution of contact forces in the geogrid-reinforced ballast system. Therefore, the calibrated geogrid model and the use of clumps to model ballast particles hold much promise for investigating the interaction between geogrids and ballast and therefore optimising performance. |
| first_indexed | 2025-11-14T18:18:20Z |
| format | Article |
| id | nottingham-2488 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:18:20Z |
| publishDate | 2013 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-24882020-05-04T16:37:08Z https://eprints.nottingham.ac.uk/2488/ A study of geogrid-reinforced ballast using laboratory pull-out tests and discrete element modelling Chen, Cheng McDowell, Glenn R. Thom, N.H. This paper presents an evaluation of the behaviour of geogrid-reinforced railway ballast. Experimental large box pull-out tests were conducted to examine the key parameters influencing the interaction between ballast and the geogrid. The experimental results demonstrated that the triaxial geogrid outperforms the biaxial geogrid and the geogrid aperture size is more influential than rib profile and junction profile. The discrete element method (DEM) has then been used to model the interaction between ballast and geogrid by simulating large box pull-out tests and comparing with experimental results. The DEM simulation results have been shown to provide good predictions of the pull-out resistance and reveal the distribution of contact forces in the geogrid-reinforced ballast system. Therefore, the calibrated geogrid model and the use of clumps to model ballast particles hold much promise for investigating the interaction between geogrids and ballast and therefore optimising performance. Taylor & Francis 2013-06-27 Article PeerReviewed Chen, Cheng, McDowell, Glenn R. and Thom, N.H. (2013) A study of geogrid-reinforced ballast using laboratory pull-out tests and discrete element modelling. Geomechanics and Geoengineering, 8 (4). pp. 244-253. ISSN 1748-6025 pull-out test ballast geogrid interlocking discrete element modelling http://www.tandfonline.com/doi/abs/10.1080/17486025.2013.805253 doi:10.1080/17486025.2013.805253 doi:10.1080/17486025.2013.805253 |
| spellingShingle | pull-out test ballast geogrid interlocking discrete element modelling Chen, Cheng McDowell, Glenn R. Thom, N.H. A study of geogrid-reinforced ballast using laboratory pull-out tests and discrete element modelling |
| title | A study of geogrid-reinforced ballast using laboratory
pull-out tests and discrete element modelling |
| title_full | A study of geogrid-reinforced ballast using laboratory
pull-out tests and discrete element modelling |
| title_fullStr | A study of geogrid-reinforced ballast using laboratory
pull-out tests and discrete element modelling |
| title_full_unstemmed | A study of geogrid-reinforced ballast using laboratory
pull-out tests and discrete element modelling |
| title_short | A study of geogrid-reinforced ballast using laboratory
pull-out tests and discrete element modelling |
| title_sort | study of geogrid-reinforced ballast using laboratory
pull-out tests and discrete element modelling |
| topic | pull-out test ballast geogrid interlocking discrete element modelling |
| url | https://eprints.nottingham.ac.uk/2488/ https://eprints.nottingham.ac.uk/2488/ https://eprints.nottingham.ac.uk/2488/ |