인천 송도지역 지층분포 추정을 위한 크리깅과 역거리가중치법의 적용 한국지반공학회논문집 제26권 제1호인천 송도지역 지층분포 추정을 위한 크리깅과 역거리가중치법의 적용

Abstract

Geo-layer information is important to determine pile length and estimate residual settlement in the construction site. An overall spatial distribution of geo-layers in the entire construction site can be predicted using drill-log information. In this study, the geo-layer distribution at Song-do area was estimated by kriging and inverse distance weighting methods, and a cross validation was adopted to verify the reliability of estimation results. The analysis results indicate that the best fitted theoretical variogram model to the experimental variogram does not always provide the most reliable estimation in the kriging method. The proper value of inverse distance weighting method must be determined by types of geo-layer, because the value is affected by types of geo-layer. Results of the kriging method show more reliable results than those of inverse distance weighting method, and the structure of geo-layer distribution could be evaluated by variogram in the kriging method.