Ground deformation of dredging clay reclaimed land by vacuum consolidation method and its finite element analysis

Abstract

In this paper, field observation result in dredging clay reclaimed land where the vacuum consolidation method was applied is reported. In addition, the prediction accuracy of soil-water coupled finite element analysis for ground de-formation behavior by the vacuum consolidation method and the stress state of improved ground was examined. In this analysis, the modified Cam-clay model considering the anisotropy which authors proposed as a constitutive equation was applied and it was compared with the original modified Cam-clay model. By the application of the proposed model, it was shown that the principle of the vacuum consolidation method could be examined from the ef-fective stress pass and that settlement and horizontal displacement in the improvement area could be predicted at the sufficient accuracy.