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2026 Vol.27, Issue 4 Preview Page
Stability Analysis of Cut Slopes Considering Panel Retaining Wall Connection Types and Rainfall Conditions

판넬식옹벽 체결 방식과 강우조건을 고려한 절토사면의 안정성 분석

Heesu Kim1
,
Sangyun Kim2
,
Jongdeuk Lim2
,
Byounghun Kim3
,
Hoki Ban4*
김 희수1
,
김 상윤2
,
임 종득2
,
김 병훈3
,
반 호기4*
1Post-Doctoral Researcher, Dept, of Civil Engineering, Kangwon National University
2Ph. D. Student, Dept. of Civil Engineering, Kangwon National University
3Master Student, Dept. of Civil Engineering, Kangwon National University
4Professor, Dept, of Civil Engineering, Kangwon National University
*Corresponding Author
1 April 2026. pp. 65-72
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Abstract

With the increase in road and railway construction projects, large-scale cut slopes are becoming more common, making slope stability an important issue. In this study, numerical analysis using Plaxis 2D and the strength reduction method was applied to evaluate the stability of cut slopes. Four analysis cases were established considering panel connection conditions (Free and Fixed) and rainfall conditions (Dry and Rainfall), and the variations in safety factor and deformation behavior were analyzed according to construction stages and elapsed time. The results show that higher safety factors were obtained under the Fixed condition, while larger displacements occurred compared to the Free condition. In addition, under rainfall conditions, the safety factor decreased and displacement increased due to the rise in groundwater level. Therefore, both panel connection conditions and rainfall effects should be considered in evaluating cut slope stability.

Keywords
Panel retaining wall
Cut slope
Connection type
Rainfall condition
Numerical analysis

최근 도로 및 철도 건설 사업의 증가로 대규모 절토공사가 확대됨에 따라 절토사면의 안정성 확보가 중요해지고 있다. 본 연구에서는 절토사면의 안정성을 평가하기 위해 Plaxis 2D를 이용한 수치해석과 강도감소법을 적용하였다. 판넬식 옹벽의 체결 조건(Free, Fixed)과 강우 조건(Dry, Rainfall)을 변수로 총 4개 Case를 구성하였으며, 시공 단계 및 시간 경과에 따른 안전율과 변형 거동을 분석하였다. 해석 결과, Fixed 조건에서 더 높은 안전율이 나타났으며, 변위는 Free 조건에 비해 크게 발생하였다. 또한 강우 조건에서는 지하수위 상승의 영향으로 안전율이 감소하고 변위가 증가하는 경향을 보였다. 따라서 절토사면의 안정성 평가 시 판넬 체결 방식과 강우 조건을 함께 고려할 필요가 있다.

키워드
판넬식옹벽
절토사면
체결방식
강우조건
수치해석
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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 : 27
  • No :4
  • Pages :65-72
  • Received Date : 2026-03-17
  • Revised Date : 2026-03-17
  • Accepted Date : 2026-03-25
  • DOI :https://doi.org/10.14481/jkges.2026.27.4.65
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