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- Title
Analysis of Dynamic Characteristics of Deformed Concrete Slab Track on Transition Zone in High-Speed Train Line According to Train Speeds.
- Authors
Park, Sungbum; Kim, Ja Yeon; Kim, Jongwon; Lee, Sehee; Cho, Kook-Hwan
- Abstract
Featured Application: Authors are encouraged to provide a concise description of the specific application or a potential application of the work. This section is not mandatory. A concrete track, such as Rheda 2000 is commonly used in high-speed railways in Korea, Germany, China, etc., to enhance the operational safety of trains and to reduce the maintenance costs. However, when settlement of embankment or a crack in the concrete slab track occurs, the durability of the concrete track deteriorates significantly. Transition zones are considered to be vulnerable and are often deformed in railway embankments. The characteristics of track support stiffness and stresses on the rail in a deformed section are different from those in an undeformed section. In this study, a field measurement and numerical analysis were carried out to identify the dynamic response on transition zones where the track is deformed. A numerical analysis model was built to simulate the deformed concrete slab track, and it was compared with measured data from field tests for verification. The field tests to measure the stresses on the rail were performed in a train speed range from 280 to 300 km/h. According to the numerical analysis, the dynamic characteristics of the track varied with train speeds, which were then compared with the allowable stresses of the concrete slab track.
- Subjects
SOUTH Korea; CONCRETE slabs; HIGH speed trains; AUTOMATIC train control; CONCRETE durability; CRACKING of concrete; CONSTRUCTION slabs; NUMERICAL analysis; CONCRETE pavements
- Publication
Applied Sciences (2076-3417), 2020, Vol 10, Issue 20, p7174
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app10207174