Numerical analysis of geogrid contribution to railway track reinforcement
In this work, influence of geogrids on overall stabilization of railway tracks is studied numerically. It is expected that by geogrids implementation significant reduction in the downward propagation of stresses will be obtained, which consequently should assure more resilient long-term performance....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201821112006 |
| _version_ | 1819162859450400768 |
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| author | Lanca António Dimitrovová Zuzana Barroso Madalena Fontul Simona |
| author_facet | Lanca António Dimitrovová Zuzana Barroso Madalena Fontul Simona |
| author_sort | Lanca António |
| collection | DOAJ |
| description | In this work, influence of geogrids on overall stabilization of railway tracks is studied numerically. It is expected that by geogrids implementation significant reduction in the downward propagation of stresses will be obtained, which consequently should assure more resilient long-term performance. In this first approach, however, only added value to the confinement level of the ballast layer is analysed, by evaluation of lateral deformations. A case study is related to a part of the Portuguese railway network. The track and the passing vehicle are modelled in commercial explicit dynamics software LS-DYNA. Firstly, the model is validated by comparison with experimental data. Then a fictitious scenario of the same track with a deteriorated region which is further rehabilitated by the geogrid placement is analysed. Different situations are compared in terms of lateral and vertical displacements at several levels, but for simplicity only rail deflections are shown here. |
| first_indexed | 2024-12-22T17:34:56Z |
| format | Article |
| id | doaj.art-8ac5caab6eae474db595f6c3346b4c71 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-22T17:34:56Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-8ac5caab6eae474db595f6c3346b4c712022-12-21T18:18:31ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-012111200610.1051/matecconf/201821112006matecconf_vetomacxiv2018_12006Numerical analysis of geogrid contribution to railway track reinforcementLanca AntónioDimitrovová ZuzanaBarroso MadalenaFontul SimonaIn this work, influence of geogrids on overall stabilization of railway tracks is studied numerically. It is expected that by geogrids implementation significant reduction in the downward propagation of stresses will be obtained, which consequently should assure more resilient long-term performance. In this first approach, however, only added value to the confinement level of the ballast layer is analysed, by evaluation of lateral deformations. A case study is related to a part of the Portuguese railway network. The track and the passing vehicle are modelled in commercial explicit dynamics software LS-DYNA. Firstly, the model is validated by comparison with experimental data. Then a fictitious scenario of the same track with a deteriorated region which is further rehabilitated by the geogrid placement is analysed. Different situations are compared in terms of lateral and vertical displacements at several levels, but for simplicity only rail deflections are shown here.https://doi.org/10.1051/matecconf/201821112006 |
| spellingShingle | Lanca António Dimitrovová Zuzana Barroso Madalena Fontul Simona Numerical analysis of geogrid contribution to railway track reinforcement MATEC Web of Conferences |
| title | Numerical analysis of geogrid contribution to railway track reinforcement |
| title_full | Numerical analysis of geogrid contribution to railway track reinforcement |
| title_fullStr | Numerical analysis of geogrid contribution to railway track reinforcement |
| title_full_unstemmed | Numerical analysis of geogrid contribution to railway track reinforcement |
| title_short | Numerical analysis of geogrid contribution to railway track reinforcement |
| title_sort | numerical analysis of geogrid contribution to railway track reinforcement |
| url | https://doi.org/10.1051/matecconf/201821112006 |
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