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2023 Vol.24, Issue 9 Preview Page
Numerical Model with Segregation Potential on Frost Heave and Reliability Assessment for Silty Soils

Segregation Potential 기반 동상 예측 모델 및 실트질 토양을 이용한 동상해석 신뢰성 평가

Jangguen Lee1*
,
Zheng Gong2
,
Hyunwoo Jin3
,
Byunghyun Ryu4
이 장근1*
,
공 정2
,
진 현우3
,
유 병현4
1Research Fellow, Department of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology
2Graduate Student, Department of Civil and Environmental Engineering, University of Science and Technology
3Senior Researcher, Department of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology
4Research Specialist, Department of Future & Smart Construction Research, Korea Institute of Civil Engineering and Building Technology
*Corresponding Author
1 September 2023. pp. 41-46
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Abstract

Numerical analysis of frost heave is challenging due to the influence of soil and environmental factors. Thermo-hydro- mechanical coupled analysis relies heavily on excessive input variables and primarily focuses on validating clayey soils, so it is limited to frost susceptible silty soils. An empirical approach based on thermodynamics offers relatively simple frost heave analysis and the advantage of linking constitutive equations with frost heave to enable geomechanical interpretations. In this paper, we introduce an empirical numerical model using the Segregation Potential (SP) and evaluate reliability through comparative analysis with experimental results of frost susceptible silty soils. While the SP model enables frost heave analysis for the given silty soils, further investigation on various silty soils is necessary to gather data on key input variables.

Keywords
Frost heave
Numerical analysis
Frost susceptible
Segregation potential
Experimental
Silt

동상은 토양과 외부 환경적 영향으로 인해 수치해석적 평가에 어려움이 있다. 열-수리-역학 연계 해석은 입력변수가 과도하고 주로 점토성 토양에 대한 검증에 국한되어 실제 동상에 민감한 실트질 토양에 적용하기에는 한계가 있다. 열역학 관점의 경험적 접근 방법은 비교적 간단하게 동상 해석이 가능하고, 구성방정식과 동상 해석 결과를 연계하여 역학적 해석도 가능하다는 장점을 보유하고 있다. 본 논문에서는 Segregation Potential(SP)을 이용한 동상 해석 모델을 소개하고 실트질 함유량에 따른 동상 실험 결과와 비교·분석을 통해 신뢰성을 평가하고 있다. SP 모델은 본 연구에서 검토된 실트질 토양의 동상 해석이 가능하지만, 다양한 실트질 토양에 대한 추가적인 검토를 통해 핵심 입력변수에 대한 자료수집이 필요하다.

키워드
동상
수치해석
동상민감성
Segregation Potential
실험
실트
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Information
  • Publisher :Korean Geo-Environmental Society
  • Publisher(Ko) :한국지반환경공학회
  • Journal Title :Journal of the Korean Geo-Environmental Society
  • Journal Title(Ko) :한국지반환경공학회 논문집
  • Volume : 24
  • No :9
  • Pages :41-46
  • Received Date : 2023-08-11
  • Revised Date : 2023-08-14
  • Accepted Date : 2023-08-24
  • DOI :https://doi.org/10.14481/jkges.2023.24.9.41
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