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http://dx.doi.org/10.12652/Ksce.2015.35.2.0515

Assessing Distribution of Degree of Saturation for Track Transition Zone Using Soil Water Characteristic Curve  

Choi, Chanyong (Korea Railroad Research Institute)
Lee, Jungmin (Korea National University of Transportation)
Kwon, Hyeok Min (Korea National University of Transportation)
Oh, Jeongho (Korea National University of Transportation)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.35, no.2, 2015 , pp. 515-524 More about this Journal
Abstract
The number of occurrence of differential settlement and track irregularity at track transition zone recently comes to increase, which leads to frequent maintenance activities that have an impact on train operation. Such track transition zone damages are attributed to the change of mechanical properties of fill materials due to environmental factors such as rainfall and freeze, and thaw. Consequently, this study attempts to establish the soil water characteristic curve (SWCC) of fill materials, and conduct seepage analysis to assess the distribution of degree of saturation (DOS) for track transition zone in case of rainfall. The SWCC of fill materials was successfully obtained using filter paper test method. The results of seepage analysis revealed that rainfall intensity, the slope of backfill, backfill condition (fill or cut), and SWCC are significantly influential in controlling the distribution of DOS.
Keywords
Track transition zone; Soil water characteristic curve; Seepage analysis; Degree of saturation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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