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연직배수재가 부분관입된 대심도 연약지반에 대한 압밀해석
정성교,제호경,진현식 東亞大學校 建設技術硏究所 1999 硏究論文集 Vol.23 No.1
The flat area in the estuary of Nakdong river is broadly covered with soft clay deposit of 20 to 60 meters in thickness. For the ground improvement, most of vertical drains used are partially penetrated up to about 25 meters in depth, because the soft ground is very thick. And then, the untreated zone exists at this reclamation site. However, it is very difficult for such a case to predict successfully the settlement and its elapsed time. In this paper, a finite element analysis was performed to investigate the consolidation behaviour for the case. The analysed result was compared with those of different consolidation theories and the observational procedures. As the compared result, because of the effects of stage construction and various ground conditions at different depths, the consolidation theories lead to the underestimated for predicting its consolidation rate. And the sooner is the time analyzed by the observational procedures, the smaller is predicted the final consolidation settlement.