Assessing the role of longitudinal variability of vertical track stiffness in the long-term deterioration

I. Grossoni, A. R. Andrade, Y. Bezin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The longitudinal variation of support stiffness is believed to be a key driver for the differential settlement of the ballast. This paper presents an innovative approach to correlate these two variables. In order to overcome the lack of input data, a statistical model is applied and the spatial correlation of the input stiffness data is controlled to generate naturally occurring variations. A large set of simulations is run and the relationship between deterioration rate and support properties is then analysed using log-linear multiple regression models. The results show that it is not only its mean value that has an impact in the long term settlement behaviour, but it is also its longitudinal variability. Also, main results suggest that the speed effect might be more crucial in localized corrective maintenance needs than in preventive maintenance needs.

LanguageEnglish
Title of host publicationProceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015
Subtitle of host publicationThe Dynamics of Vehicles on Roads and Tracks
PublisherCRC Press/Balkema
Pages851-860
Number of pages10
ISBN (Print)9781138028852
Publication statusPublished - 3 May 2016
Event24th Symposium of the International Association for Vehicle System Dynamics - Graz, Austria
Duration: 17 Aug 201521 Aug 2015
Conference number: 24

Conference

Conference24th Symposium of the International Association for Vehicle System Dynamics
Abbreviated titleIAVSD 2015
CountryAustria
CityGraz
Period17/08/1521/08/15

Fingerprint

Deterioration
Stiffness
Preventive maintenance
Statistical Models

Cite this

Grossoni, I., Andrade, A. R., & Bezin, Y. (2016). Assessing the role of longitudinal variability of vertical track stiffness in the long-term deterioration. In Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015: The Dynamics of Vehicles on Roads and Tracks (pp. 851-860). CRC Press/Balkema.
Grossoni, I. ; Andrade, A. R. ; Bezin, Y. / Assessing the role of longitudinal variability of vertical track stiffness in the long-term deterioration. Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015: The Dynamics of Vehicles on Roads and Tracks. CRC Press/Balkema, 2016. pp. 851-860
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Grossoni, I, Andrade, AR & Bezin, Y 2016, Assessing the role of longitudinal variability of vertical track stiffness in the long-term deterioration. in Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015: The Dynamics of Vehicles on Roads and Tracks. CRC Press/Balkema, pp. 851-860, 24th Symposium of the International Association for Vehicle System Dynamics, Graz, Austria, 17/08/15.

Assessing the role of longitudinal variability of vertical track stiffness in the long-term deterioration. / Grossoni, I.; Andrade, A. R.; Bezin, Y.

Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015: The Dynamics of Vehicles on Roads and Tracks. CRC Press/Balkema, 2016. p. 851-860.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The longitudinal variation of support stiffness is believed to be a key driver for the differential settlement of the ballast. This paper presents an innovative approach to correlate these two variables. In order to overcome the lack of input data, a statistical model is applied and the spatial correlation of the input stiffness data is controlled to generate naturally occurring variations. A large set of simulations is run and the relationship between deterioration rate and support properties is then analysed using log-linear multiple regression models. The results show that it is not only its mean value that has an impact in the long term settlement behaviour, but it is also its longitudinal variability. Also, main results suggest that the speed effect might be more crucial in localized corrective maintenance needs than in preventive maintenance needs.

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Grossoni I, Andrade AR, Bezin Y. Assessing the role of longitudinal variability of vertical track stiffness in the long-term deterioration. In Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015: The Dynamics of Vehicles on Roads and Tracks. CRC Press/Balkema. 2016. p. 851-860