한국지반신소재학회논문집 (Journal of the Korean Geosynthetics Society)

  • 제18권4호
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  • Pages.287-297
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  • 2019
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  • 2508-2876(pISSN)
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  • 2287-9528(eISSN)
한국지반신소재학회 (Korean Geosynthetics Society)
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포장층 두께와 교통하중 크기를 고려한 공동 발생 지반의 안정성 분석에 관한 수치해석

A Numerical Analysis on Stability Analysis of Cavity Ground considering Pavement Thickness and Traffic Load

  • You, Seung-Kyong (Dept. of Civil Engineering, Myongji College) ;
  • Ahn, Heechul (School of Civil and Environmental Engineering, Chung-Ang Univ.) ;
  • Kim, Young-Ho (School of Civil and Environmental Engineering, Chung-Ang Univ.) ;
  • Han, Jung-Geun (School of Civil and Environmental Engineering, Urban Design and Study, Chung-Ang Univ.) ;
  • Hong, Gigwon (Institute of Technology Research and Development, Korea Engineering & Construction) ;
  • Park, Jeong-Jun (Incheon Disaster Prevention Research Center, Incheon National University)
  • 투고 : 2019.12.04
  • 심사 : 2019.12.24
  • 발행 : 2019.12.30
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초록

본 연구에서는 공동 발생 지반에 대한 안정성 분석을 목적으로 포장층 두께와 교통하중 크기를 고려한 일련의 유한요소 수치해석을 수행하였다. 본 수치해석 방법의 타당성 검증을 위해 선행된 수치해석 연구를 활용하여 공동 발생 지반의 역학적 거동을 모사하였으며, 기존의 현장계측 결과와 비교·분석하였다. 또한, 수치해석 결과로부터 지반의 간극비, 지표침하, 전단응력의 변화를 확인함으로써 전반적인 지반의 역학 거동을 확인할 수 있었으며, 본 연구에서 산정한 응력비 및 비파괴심도와 지표침하량의 관계를 이용하여 공동 발생 지반의 안전성을 분석하였다. 그 결과, 포장층 두께가 감소하고 교통하중 크기가 증가할수록 지표침하량의 증가와 함께 비파괴심도 및 지반의 전반적인 안정성은 감소함을 알 수 있었다.

In this study, a series of finite element numerical analyzes were performed considering the pavement thickness and traffic load for the purpose of stability analysis on the cavity ground. In order to verify the validity of this numerical method, the previous numerical analysis was used to simulate the mechanical behavior of cavity ground, and the results were compared and analyzed. Also, from the numerical results, it was possible to confirm the dynamic behavior of the ground by confirming the change of ground void ratio, surface settlement, and shear stress, and using the relationship between stress ratio, non-destructive depth and surface settlement, the safety of the was analyzed. As a result, as the pavement thickness decreased and the traffic load increased, the non-destructive depth and the overall stability of the ground decreased with the increase of surface settlement.

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참고문헌

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