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http://dx.doi.org/10.12814/jkgss.2015.14.3.043

Slope Stability Analysis according to Repeated Freezing and Thawing of the Soil  

Shin, Eun Chul (Dept. of Civil and Environmental Enginnering, Incheon National University)
Shin, Hui Su (Dept. of Civil and Environmental Enginnering, Incheon National University)
Gyu, Jung Cheol (Dept. of Civil and Environmental Enginnering, Incheon National University)
Publication Information
Journal of the Korean Geosynthetics Society / v.14, no.3, 2015 , pp. 43-51 More about this Journal
Abstract
In seasonal frozen areas which have a temperature difference in the winter and spring season like south korea, if stiffness reduction by repeated freezing and thawing occurs to slopes adjacent to private facilities or mountain slopes, safety factor is insufficient to design criteria and landslide could be occurs due to rainfall or snowfall. It can lead to large damage of human life and property. In this study, in order to examine the safety changes of mountain slopes by repeated freezing and thawing, soil samples series of SP and SM by USCS distributed in surface soil of mountain slopes were collected for specimens. Through the direct shear test, the characterestics of frozen soil shear strength were analyzed and by utilizing numerical methods, chracteristics of strength reduction of weathered granite soil according to repeated action of freezing and thawing, changes in the stability of the slopes when applying freezing and thawing of the soil samples were examined. As a result, the maximum shear stress decreased approximately 10%, and slope stability analysis confirmed that required safety factor is less than compare with the non-frozen samples.
Keywords
Frost heave; Frost reduction effect; Slope stability analysis; Freezing and Thawing;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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