Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Evaluation Method of Frost Heave for Unsaturated Soils

불포화 지반의 동결 팽창율 예측을 위한 기법 연구

  • Kang, Jae-Mo (Geotechnical Engineering Research Division, SOC Research Institute, Korea Institute of Construction Technology) ;
  • Kim, YoungSeok (Geotechnical Engineering Research Division, SOC Research Institute, Korea Institute of Construction Technology) ;
  • Lee, Jangguen (Geotechnical Engineering Research Division, SOC Research Institute, Korea Institute of Construction Technology)
  • Received : 2013.03.12
  • Accepted : 2013.03.25
  • Published : 2013.03.30
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Abstract

Frost heave occurs when ground temperature decreases under $0^{\circ}C$ and soil volume expands, which causes roadway and buried pipe line failure due to differential heaving. There are several models to predict volumetric strain caused by frost heave, but they requires expertises who have professional background and experience related to numerical analysis. This study presents an evaluation method to predict volumetric strain caused by frost heave with fundamental physical properties of soils. The evaluation method is assessed with experimental results.

동결 지반에서 발생하는 동상(frost heave)은 지반의 부등융기를 야기하고, 이때 발생하는 동결하중에 의해 동절기 도로 및 기초 구조물에 피해를 가져온다. 이러한 동결 피해를 방지하기 위해 동상 예측이 필요하다. 대부분의 동상 예측 방법은 경험과 지식을 갖춘 전문가의 수치해석에 의존하고 있어 현장에서 활용성이 낮다. 본 논문에서는 동결지반 피해의 주요 원인인 지반의 동상량을 예측하기 위해 기본적인 지반 물성 데이터를 이용해 동상량을 계산할 수 있는 방안을 제시하였으며, 실내 동상 실험결과와의 비교 분석을 통해 제안된 계산식의 신뢰성을 검토하였다.

Keywords

References

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Cited by

  1. The Frost Heaving Susceptibility Evaluation of Subgrade Soils Using Laboratory Freezing System vol.12, pp.2, 2013, https://doi.org/10.12814/jkgss.2013.12.2.013
  2. Effects of Freezing a Backfill Material under Undrained Condition on a Buried Pipe vol.30, pp.8, 2014, https://doi.org/10.7843/kgs.2014.30.8.39
  3. 동상민감성 판정 기준 신뢰성에 관한 연구 vol.18, pp.12, 2017, https://doi.org/10.14481/jkges.2017.18.12.37