Monitoring and modeling of railway structures of the high-speed line BPL with asphalt concrete underlayment
| Autor: | Khairallah, Diana, Chupin, Olivier, BLANC, Juliette, Hornych, Pierre, Piau, Jean Michel, Ramirez Cardona, Diego, DUCREAU, Alain, SAVIN, Frédéric |
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| Přispěvatelé: | Laboratoire Auscultation, Modélisation, Expérimentation des infrastructures de transport (MAST-LAMES ), Université Gustave Eiffel, Groupe Eiffage, SNCF Réseau [La Plaine st Denis], Setec ferroviaire Group, parent |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
BETON BITUMINEUX
RAIL PAYS DE LA LOIRE MODELISATION BALLASTED RAILWAYS [SPI.MAT]Engineering Sciences [physics]/Materials BALLAST ASPHALT CONCRETE [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering ENROBE SURVEILLANCE RAILWAYS MODELING VOIE FERREE MONITORING CHEMIN DE FER (VOIE) CONTROLE BRETAGNE |
| Zdroj: | Transportation Research Record Transportation Research Record, SAGE Journal, 2020, 2674 (12), pp. 600-607. ⟨10.1177/0361198120960472⟩ |
| ISSN: | 0361-1981 2169-4052 |
| Popis: | High-speed railway lines design and durability constitute major challenges in the railway transportation field. In France, a 40-year feedback on field behaviour of ballasted tracks led to improvement of the design rules. Settlement and wear of ballast, caused by dynamic stresses at high frequency, however remains a major problem on high-speed tracks leading to high maintenance costs. Studies have shown that these settlements were linked to the high accelerations produced in the ballast layer by high-speed trains traveling on the track, disrupting the granular assembly. The high-speed line "Bretagne - Pays de la Loire" (BPL HSL), with varied subgrade conditions, represents the first large-scale application of asphalt concrete (GB) as ballast sublayer. This line includes 77 km of conventional track with a granular sub-layer (UGM) and 105 km of track with an asphalt concrete sub-layer under the ballast. Four track sections were instrumented during construction using, among others, accelerometers, anchored deflection sensors and strain gages. This paper presents the instrumentation as well as the acquisition system installed on the track. Data processing is explained first, and followed by a presentation of the ViscoRail software, developed for modelling railway tracks. The bituminous section's behavior and response is modelled using a multi-layer dynamic response model, implemented in the ViscoRail software. A good match between experimental and calculated results is highlighted. |
| Databáze: | OpenAIRE |
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