한국지반공학회지:지반 (Geotechnical Engineering)

한국지반공학회 (Korean Geotechnical Society)
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지구통계학적 기법을 이용한 콘저항치의 공간적 변화의 평가

Estimations of Spatial Variability of Cone Resistance Using Geostatistical Method

  • 윤길림 (회원, 현대진설(주)기술연구소) ;
  • ;
  • Michael, W. O'Neill (Professor, Department of Civil and Environmental Engineering. University of Houston, Houston TX 77204-4791.)
  • 발행 : 1997.02.01
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초록

과압밀된 점토현장에서 수행한 콘관입시헙 자료를 지구통계학 방법으로 분석하였다. 임의로 위치한 28개의 콘 사운딩 자료(A현장)와 일관되게 위치한 38개치 콘 사운딩 자료(B현장)분석에 이용되었다. 크리깅기법을 이용하여 두 현장의 콘 저항에 대한 베리어그램을 개발했다. 개발된 배리오그램은 현장에서와 수직적 상관거리 및 수평적 상관거리를 규명하는데 이용되었으며 이의 결과는 두 시험결과를 상호비교하려면 샘플링이 수평상관지리 이내에서 수행되어야하는 최적샘 플링설계로 이용된다. 베리오그램의 분석결과는 두 현장의 지질학적 형성이 수직적 및 수평적으로 큰 차이가 없음을 확인할 수 있었다. A현장에서의 크리깅한 콘 저항치를 3차원적으로 나타낸 표면은 콘 저항치의 공간적 변동을 이해하는데 도움을 주며 또한 지구통계학적으로 분식된 3차원적 표면은 분석된 현장의 어느위치에서나 최적의 콘 저항치를 나타낼 수 있다는 것을 의미한다.

Applications of geostatistical method to cone penetrometer data have been performed at the overconsolidated clay site. Randomlylocated 28 electronic CPT soundings (Location A) and consistently-located 38 CPT soundings(Location B) are investigated geostatistically. Variograms for Locations A and B have been developed for q, from the CPT data by using "kriging" principles, which establish the horizontal and vertical correlation distrances at this site. These vertical and horizontal correlation distances can be used to optimal sampling design, where, if one needs to compare two test results, sampling must be made within these vertical and horizontal correlation distances. Analysis of the variograms indicated that the geological formation between two locations are not very different in both vertical direction and horizontal direction.direction.

키워드

참고문헌

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