Modeling of long-term train loads impacts on subgrade soils: a review

Yavna, V. A.; Shapovalov, Vladimir; Okost, Maksim; Morozov, A. M.; Ermolov, Yakov; Kochur, Andrei

doi:10.1016/j.ijtst.2022.06.005

Cited by 6 publications

(1 citation statement)

References 136 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It plays the role of draining water completely from the track to avoid track ballast pollution and other deformations of the ballast bed on the track. While the ballast plays a major role in keeping the track system healthy and functioning, the sub-ballast layer plays an even more important role as a construction component of the railroad track [18]. Specifically, it prevents the mixing and penetration of ballast and subgrade, mitigates subgrade attrition by the ballast, reduces subgrade stress, etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of vibration on sub-ballast layer induced by loading application on a fouled track ballast

Onwube,

Mashros,

Yusoff

et al. 2024

Nig. J. Tech.

View full text Add to dashboard Cite

The railway track’s sub-ballast layer is important, but it is often neglected, leading to the contamination and blockage of voids, as well as track deformation and degradation. These issues occur when fouling materials infiltrate the subballast due to load-induced vibration. The purposes of this paper are to investigate the influence of vibration on the sub-ballast layer when loads are applied to a fouled ballast and to determine whether sub-ballast saturation should be ignored. A ballast box was fabricated to represent actual railway conditions and filled with 100 kg of ballast aggregates containing fouling materials (crushed ballast, sand, clay, and coal) proportional to the ballast weight. In addition, a vibratory compactor plate machine was used to simulate load on the fouled ballast, inducing vibrations that caused fouling materials to migrate into the sub-ballast. The results indicate that 18% of crushed ballast, 20% of sand, 20.7% of clay, and 15% of coal infiltrated the sub-ballast due to loading-induced vibration, and fouling infiltration percentages rose as vibration from loading increased. These percentages exceeded the standard 10% weight of fouling infiltration into the sub-ballast, indicating an unfavourable subballast condition and showing that sub-ballast saturation should not be ignored. These findings have significant implications for maintenance engineers, as they underscore the need for continuous monitoring and upkeep to ensure optimal sub- ballast performance.

show abstract

Section: Introductionmentioning

confidence: 99%