Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Long-Term Slope Stability Considering Strength Degradation of Soil

지반의 열화에 따른 사면의 장기 안정성 검토

  • Jaemo Kang (Department of Geotechinical Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Hoki Ban (Dept. of Civil Engrg., Kangwon National Univ.)
  • Received : 2024.10.08
  • Accepted : 2024.10.23
  • Published : 2024.11.01
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Abstract

The strength of ground tends to weaken as time goes, and experimental observation and measured data indicate that this reduction in strength follows an exponential degradation trend. Therefore, this study presents a degradation model in which the ground strength parameters degraded according the history of time. Using the proposed model, the long-term stability of slope is predicted through numerical analysis, and the results are presented. Based on the these results, it is possible to predict the long-term behavior of slope and provide a basis for determining when the maintenance or reinforcement might be necessary.

지반의 강도는 시간의 경과에 따라 그 정도가 감소한다. 이러한 강도의 감소는 실험이나 실측 데이터의 관측에 의하면 지수함 수형태의 감소경향을 확인할 수 있다. 따라서 본 연구에서는 지반의 강도정수가 시간의 이력에 따라 감소하는 열화모델을 제시하였다. 제시된 모델을 이용하여 사면의 장기거동을 수치해석적인 방법을 이용하여 예측하고, 그 결과 값을 보여주었다. 이 결과를 바탕으로 사면의 장기적인 거동을 예측할 수 있으며, 예측된 결과를 바탕으로 사면의 보수/보강 시기를 결정할 수 있는 근거를 제시하였다.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부 한국건설기술연구원 연구개발적립금 자체사업으로 수행되었습니다(과제번호 20240306-001, 지하 생활기반시설 입체적 위험평가를 위한 재해·재난 DB구축(1/1)). 이에 깊이 감사드립니다.

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