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Probabilistic risk analysis of flying ballast hazard on high-speed rail lines
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Deng, Jieyi. Probabilistic risk analysis of flying ballast hazard on high-speed rail lines. Retrieved from https://doi.org/doi:10.7282/T3ZS315H

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TitleProbabilistic risk analysis of flying ballast hazard on high-speed rail lines
NameDeng, Jieyi (author); Liu, Xiang (chair); WANG, HAO (internal member); Jin, Jing (internal member); Rutgers University; School of Graduate Studies
Date Created2018
Other Date2018-10 (degree)
SubjectCivil and Environmental Engineering, High speed trains—Risk assessment—Mathematical models, Railroad rails—Risk assessment—Mathematical models
Extent1 online resource (v, 43 pages : illustrations)
DescriptionFlying ballast is a significant safety concern for high-speed train operations on ballasted tracks. It is the phenomenon of a ballast particle displaced from the track, due to the aerodynamic force induced by a passing train traveling above a certain speed. Flying ballast can potentially damage tracks and rolling stock, thereby posing a risk to high-speed rail operations. This thesis develops a Probabilistic Risk Analysis (PRA) model based on the information available from the field and the literature. The model enables a quantitative assessment of the probability of ballast particle displacement at a particular position on the track, as well as the probabilistic distribution of the total number of ballast particles that are expected to move. The model accounts for various risk factors, such as train speed, ballast gradation, and track position. The model application is illustrated using a ballasted track on the Yellow River Bridge on the Beijing-Shanghai high-speed rail line in China. The analysis finds that flying ballast probability increases when train speed increases, in particular, the problem of flying ballast becomes more pronounced when train speed exceeds 350 km per hour (217 miles per hour). Flying ballast probability might be reduced when the ballast profile is lower, given all else being equal. In addition, flying ballast probability is expected to be higher at the center of the track than in other positions. The proposed risk model can be further developed and ultimately be used to evaluate route-specific flying ballast risk, enabling the identification, assessment, and comparison of risk mitigation strategies in order to support emerging high-speed rail operations.
NoteM.S.
NoteIncludes bibliographical references
Noteby Jieyi Deng
Genretheses, ETD graduate
Persistent URLhttps://doi.org/doi:10.7282/T3ZS315H
Languageeng
CollectionSchool of Graduate Studies Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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