GEOTECHNICAL CHARACTERISTIC VALUES FOR KOREAN MARINE CLAY

초록

Current methods of estimating geotechnical characteristic value for Korean marine clay were discussed within the framework of characteristic value which has globally argued during the processing of development of Eurocode 7. Estimation of geotechnical characteristic value, an issue of this dispute, affects not only the determination of design value applied directly to design of geotechnical structures, but also the economic feasibility and stability following results of geotechnical design. In this paper, the characteristic values of main marine clays of Korea were calculated and compared with those using some methods proposed. As the results, it was appeared that most of the computed values were close to mean value and less conservative in the order of Student/Ovesen, Schneider and EN 1990. In case of EN 1990 approach, however, it showed an inappropriate to assess geotechnical design value being calculated less than zero with statistical variability. Also, it was found that current methods have trends of estimating more conservative characteristic values when larger in soil variability.