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http://dx.doi.org/10.7843/kgs.2010.26.5.57

Comparative Studies of Kriging Methods for Estimation of Geo-Layer Distribution of Songdo International City in Incheon  

Kim, Dong-Hee (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Ryu, Dong-Woo (KIGAM)
Lee, Ju-Hyoung (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Choi, In-Gul (Yooshin Engineering Corporation)
Kim, Jong-Kook (Incheon Office, SGS-Korea Construction Quality Test & Analysis Co., Ltd.)
Lee, Woo-Jin (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.5, 2010 , pp. 57-64 More about this Journal
Abstract
Kriging techniques have been used to estimate the spatial distribution of soil layers and soil properties in the geotechnical engineering area. Since the selected kriging technique may provide different values of estimation, the selection of method is important in the geotechnical estimation. In this paper, the spatial distribution of the thickness of consolidation layer of Songdo International City is estimated using simple, ordinary, and universal kriging techniques, and the reliability of estimated results is analyzed. It is shown that the consolidation layer thickness estimated by the simple kriging technique is larger than those by other kriging techniques when the location of estimation is far from the locations where the measured data exist. In this case, the reliability of the simple kriging technique is observed to be lower than those of other techniques. Universal kriging gives a negative value for thickness of consolidation layer in some locations away from the data. It is concluded that the ordinary kriging is the most optimized estimation technique because the reliability of ordinary kriging technique is higher than those of other ones and the consolidation layer thickness estimated by the ordinary kriging locates within the reasonable range.
Keywords
Kriging with a trend; Ordinary kriging; Simple kriging; Variogram;
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Times Cited By KSCI : 4  (Citation Analysis)
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