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Title |
Assessment on Consolidation Material Function and Initial Stress for Soft Ground by Hydraulic Fill the at Southern Coast of Korea
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Keywords |
압밀 ; 해성점토 ; 압밀특성치 ; 물질함수 ; 원지반 초기응력 ; Consolidation ; Marine clay ; Consolidation properties ; Material function ; In-situ initial stress |
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Abstract |
For a massive project related to building national industrial complexes on a soft ground applied to PVD after dredging and hydraulic fill, labarotory tests were carried out using undistrubed sample taken from various depth. Piezocone penetration and dissipation tests were carried out to assess horizontal coefficient of consolidation and initial stress in field. The ground consists of upper dredged fill and lower original clay layer having both similar marine clays. It should be, however, considered as multi-layered soft ground having different initial void ratio, initial water content, initial effective stress, and permeability and compressibility with directions. To assess initial stress of those soft layers in which have different stress history related to consolidation, CPTu test results, especially excess pore water pressure, were analyzed. It allows to find out distribution of excess pore water pressure and initial stress inner original clay layer.
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