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AuthorAlabbasi, Yahia
AuthorHussein, Mohammed
Available date2020-04-30T12:59:30Z
Publication Date2020
Publication NameProceedings of the International Conference on Civil Infrastructure and Construction
CitationAlabbasi Y., Hussein M., Comparison of the Mechanical Behavior of Railroad Ballast in a Box Test under Sinusoidal and Realistic Train Loadings using Discrete Element Method, International Conference on Civil Infrastructure and Construction (CIC 2020), Doha, Qatar, 2-5 February 2020, DOI: https://doi.org/10.29117/cic.2020.0039
ISSN2958-3128
IdentifierP. O. Box: 2713 Doha-Qatar, Email: qupress@qu.edu.qa
URIwww.cic.qa
URIhttp://dx.doi.org/10.29117/cic.2020.0039
URIhttp://hdl.handle.net/10576/14725
AbstractA ballasted track is a popular type of railway track and its use is increasing all over the world. A ballasted track consists of different structural elements like rails, fasteners, sleepers, ballast layer, sub-ballast layer and subgrade. A ballast layer is considered as the main structural element of ballasted tracks; it has a significant contribution to track stability and alignment. After service, periodical maintenance of ballast layer is required to maintain its functionality. Ballast maintenance is a cost and time expensive operation. Better understanding of ballast mechanical behavior leads to better ballast design and efficient maintenance. Discrete Element Method has been used extensively in the literature to understand the mechanical behavior of railroad ballast in a box test. Nevertheless, in the literature most of the studies simulate train loading as pure continuous sinusoidal loading unlike the real train loading. This paper aims to investigate the influence of the simulated train loading on the mechanical behavior of railroad ballast after 1000 loading cycles. There are two simulated train-loading cases used in this study for comparison purposes; continuous sinusoidal loading and a more realistic train loading utilizing the Beam on Elastic Foundation theory. The results show a difference of ballast vertical settlement up to 14% between the two simulated train-loading cases.
Languageen
PublisherQatar Univesrity Press
SubjectDiscrete element method
DEM
Railroad ballast
Ballasted track
Box test
TitleComparison of the Mechanical Behavior of Railroad Ballast in a Box Test under Sinusoidal and Realistic Train Loadings Using Discrete Element Method
TypeConference Paper
Pagination308-315
ESSN2958-3136
dc.accessType Open Access


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