Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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A Comparative and Parametric Study of Slope Stability Using a Probability-based Method in Railway Slope

철도 사면에서 확률론적 기법을 이용한 사면안정성 매개변수 비교연구

  • Choi, Chan-Yong (High Speed Railway Infrastructure System Research Center) ;
  • Kim, Ju-Yong (High Speed Railway Infrastructure System Research Center) ;
  • Eum, Ki-Young (High Speed Railway Infrastructure System Research Center)
  • Received : 2012.10.23
  • Accepted : 2012.12.15
  • Published : 2012.12.30
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Abstract

In this study, it was carried out reliability analysis and slope stability analysis in a standard cross-sectional embankment on high speed railway. It was confirmed that changing tendency of safety factor with various parameter of each soil materials properties and trends of the probability of failure according to the reliability index. The results have shown that a safety factor were relatively large affected an cohesions and internal friction angle of soil compared to the unit weight of soil. Also, most of the standard cross-sectional embankment in high speed railway was generally evaluated the level of below average (below average) by the reliability analysis according to criterion in US. Army but the 12m height of dry embankment case was shown bad condition as Poor.

본 논문에서는 고속철도 표준사면에 대해 안전율 평가와 확률론적 방법에 의한 신뢰성 해석을 수행하였다. 원지반과 흙 쌓기재료의 지반정수에 따른 안전율 변화경향과 신뢰도 지수 및 파괴확률의 분포경향을 확인하였다. 철도표준 성토사면에 대한 사면안정 해석결과 점착력과 내부마찰각은 단위중량에 비하여 안정성에 상대적으로 큰 영향을 미치는 것으로 나타났다. 또한 국내 철도 표준성토단면에 대한 신뢰성 해석결과 미공병단 기준에 의거하여 대체적으로 "평균이하(Below average)"의 수준이며, 건기 시 성토높이 12.0m에서는 "나쁨(Poor)"으로 나타났다.

Keywords

References

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