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http://dx.doi.org/10.7782/JKSR.2011.14.3.262

A Study on the Evaluation of Track Support Stiffness on the Various Track Type in Urban Transit  

Lee, Dong-Wook (서울과학기술대학교 철도전문대학원 철도건설공학과)
Park, Yong-Gul (서울과학기술대학교 철도전문대학원 철도건설공학과)
Choi, Jung-Youl (베를린공과대학교 철도.궤도공학과)
Publication Information
Journal of the Korean Society for Railway / v.14, no.3, 2011 , pp. 262-270 More about this Journal
Abstract
Track support stiffness which affected track maintenance and riding comfort had a big effect on the track and train. Also, track support stiffness of the track design which was based on theory differs from track support stiffness of the track generated on the field. Track support stiffness was generated by several factors such as dynamic wheel loads, vertical displacement of track, and stress at rail bottom on the field test. With the results of the field test was compared with theoretical value. This paper analyzed that track support stiffness of ballast depended on condition of ballast, and support stiffness of concrete track also depended on the characteristic of track structures such as, normal elastic fastening system, rail floating system and sleeper floating system. However, on the ballast and concrete track, the designed track support stiffness was underestimated less than the measured track support stiffness. When the track condition was estimated on service line, it would not consider the track condition on the field. Therefore, this study proposed the various track type and the range of track support stiffness based on the experimental test.
Keywords
Track type; Field test; Track support stiffness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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