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http://dx.doi.org/10.14481/jkges.2019.20.2.69

Estimation of Consolidation Characteristics of Soft Ground in Major River Mouth  

Lee, JunDae (Department of Civil Engineering, Semyung University)
Kwon, YoungChul (Department of Civil Engineering and Management, Tohoku Institute of Technology)
Bae, WooSeok (R&D Center, NANO-GEO ENC Co. Ltd.)
Publication Information
Journal of the Korean GEO-environmental Society / v.20, no.2, 2019 , pp. 69-79 More about this Journal
Abstract
The coastal area forms various sedimentary layers according to the environmental conditions such as the topography and geological features of the upper region of the river, ocean currents, and river mouth. Therefore, identifying the characteristics of the marine clay deposited in the coastal area plays a key role in the investigation of the formation of soft ground. In general, alluvial grounds are formed by a variety of factors such as changes in topography and natural environment, they have very diverse qualities depending on the deposited region or sedimentation conditions. The most important thing for the construction of social infrastructures in soft ground areas is economical and efficient treatment of soft ground. In this study, the author collected data from diverse laboratory and field tests on five areas in western and southern offshore with relatively high reliability, and then statistically analyzed them, thereby presenting standard constants for construction design. Correlation between design parameters such as over consolidation ratio, preconsolidation pressure was analyzed using linear and non-linear regression analyses. Also, proposed distribution characteristics of design parameters in consideration of each region's uncertainty through statistical analyses such as normality verification, outlier removal.
Keywords
River mouth; Uncertainty; Statistical methods; Preconsolidation pressure; Over consolidation ratio;
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