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http://dx.doi.org/10.12814/jkgss.2014.13.3.039

Dynamic behavior of Track/Roadbed with Loading Frequency in Concrete Track through Full Scale Model Test  

Choi, Chanyong (High Speeed Railway Research Division, Korea Railroad Research Institute)
Kim, Hunki (High Speeed Railway Research Division, Korea Railroad Research Institute)
Eum, Kiyoung (High Speeed Railway Research Division, Korea Railroad Research Institute)
Kang, Yunsuk (High Speeed Railway Research Division, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Geosynthetics Society / v.13, no.3, 2014 , pp. 39-47 More about this Journal
Abstract
In this study, the full scale model tests were performed with track-roadbed system such as Ho-nam high speed railway. The measured data gives good similar a roadbed pressure with equivalent depth to the Odemark's theory. In the case of earth pressures have a under 50 kPa at upper-subgrade applying 330 kN static loading. Results of cyclic loading tests did not differ significantly from those of static loading test. The elastic displacement at HSB layer has a level of 1/100 compared to the 1 mm that it was evaluation criteria for speed up of High Speed Railway. Elastic displacement at subgrade layer was measured a level of 1/175. The dynamic characteristics of track-roadbed with loading frequency level were linearly increased under 35 Hz, while the wheel loading, displacement and acceleration of roadbed were decreased loading frequency above 35 Hz.
Keywords
Track roadbed; Full scale model; Loading frequency; Odemark's theory; Concrete track;
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1 Choi C.Y., Lee S.H., Eum K.Y. (2010), "A comparison of behavior of the roadbed of ballasted & Concrete track with Cyclic loading, Journal of the Korean Geosynthetics Society, Vol.9, Issue.3, 2010, pp.1-8.
2 Eisenmann J., Leykauf G., (2000), "Feste Fahrbahn Fur Schienenhahnen" Sonderdruck aus, Beton Kalender.
3 Eisenmann J., Leykauf G., (2001), "Beton-Fahrbahnen", 2nd Edition, Ernst&Sohn a Wiley Company.
4 Korea Railroad Research Institute (2011), Study on design standards of track system for the HSR at 400km/h, R&D/10PRTD-B056522-01.
5 Korea Rail Network authority (2008), A study on performance improvement of Interface for concrete track(Final report), 102 611H09-501-001.
6 PCA (1984), Thickness Design for Concrete Highway and Street Pavement, Portland Cement Association.
7 Selig, E.T. and Waters, J.M. (1996), Track Geotechnology and Substructure Management, Telford, England.