Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Influence of Soil Nailing Angle on Slope Reinforcement Effect by Finite Difference Analysis

유한차분해석을 통한 쏘일네일링 설치각도가 사면 보강효과에 미치는 영향

  • 유광호 (수원대학교 토목공학과) ;
  • 민경선 (수원대학교 토목공학과)
  • Received : 2013.01.04
  • Accepted : 2013.08.20
  • Published : 2013.08.31
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Abstract

LEM (Limit Equilibrium Method) based programs are commonly used for the designs of soil nailing as a slope reinforcement. However, there is a drawback that the interaction between ground and soil nailing is not properly reflected in those programs, which needs to be solved. For economical constructions and designs, research is also required on the support pattern of soil nailing. In this study, therefore, reinforcement effects of soil nailing were compared and analyzed by performing finite difference analyses which could properly consider the interaction between ground and soil nailing. As a result, when the angle from slope to nail is $90^{\circ}$, failure slip surface becomes the largest and thus the factor of safety becomes maximum.

사면보강을 위한 쏘일네일링 설계 시 한계평형법을 기초로 하는 프로그램이 주로 사용되고 있다. 하지만 사용 프로그램들은 지반과 쏘일네일링의 상호작용을 제대로 반영하지 못하는 단점을 가지고 있어 이를 보완할 필요가 있다. 또한 경제적인 시공 및 설계를 위해 쏘일네일링 보강패턴에 대한 연구가 요구된다. 본 연구에서는 지반과 쏘일네일링의 상호작용이 고려되는 유한차분해석을 실시하여, 쏘일네일링의 보강효과를 비교 분석하였다. 그 결과 사면으로부터 네일까지의 각도가 $90^{\circ}$가 될 때 활동면이 최대로 커짐에 따라 최대안전율을 보였다.

Keywords

References

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  1. 유한차분해석과 한계평형해석의 비교를 통한 평면파괴 사면 쏘일네일링 보강효과 연구 vol.30, pp.11, 2013, https://doi.org/10.7843/kgs.2014.30.11.5