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Study on the Method of Determination of Vertical Stress Due to Extension of Embankment Width

성토폭의 확장에 의한 지중응력 결정법 연구

  • Lee, Seung-Hyun (Division of Architecture, Architectural Engineering and Civil Engineering, Sunmoon University) ;
  • Kim, Eung-Seok (Division of Architecture, Architectural Engineering and Civil Engineering, Sunmoon University)
  • 이승현 (선문대학교 건축사회환경학부) ;
  • 김응석 (선문대학교 건축사회환경학부)
  • Received : 2015.07.10
  • Accepted : 2015.10.08
  • Published : 2015.10.31

Abstract

In this study, equation of calculating vertical stress increment developing in underneath of the embankment due to the extension of embankment width was derived through the use of theory of elasticity. Concept of the origin of plane was adopted to simplify derivation procedure for obtaining the equation. Comparing the results of the equation for calculating vertical stress increment with those of the numerical analyses, differences in the magnitudes of vertical stress increments decrease as the depths below embankment increase. Comparing the vertical stress increments with horizontal distances which correspond to certain depth, vertical stress increments obtained from the derived equation were slightly greater than those of numerical analyses.

본 연구에서는 성토체의 확장에 의해 성토체 하부지반으로 전달되는 연직응력 증분량을 계산할 수 있는 식을 탄성론에 근거하여 유도하였다. 연직응력 증분량 산정식의 유도과정에서는 평면기점의 개념을 적용하여 유도과정을 단순화하였다. 연직응력 증분량 산정식에 의한 계산결과를 수치해석결과와 비교해 보았을 때 성토체 하부지반으로의 깊이가 커질수록 산정식과 수치해석결과 사이의 차이가 감소하였다. 수평방향 거리에 따른 연직응력 증분량을 수치해석결과와 산정식에 의한 결과를 통해 비교해 볼 때 대체적으로 산정식에 의해 예측된 연직응력 증분량이 수치해석에 의한 증분량보다 약간 커서 보수적인 결과를 보임을 알 수 있었다.

Keywords

References

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