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| Research on nonlinear large strain consolidation of dredger fill |
| HUANG Chaoxuan |
| (Zhejiang Design Institute of Water Conservancy and Hydroelectric Power，Hangzhou，Zhejiang 310002，China) |
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Abstract The problem of large-strain consolidation of saturated soft soil foundations is complex，such as material nonlinearity and geometrical nonlinearity，and it is generally difficult to get analytical solutions. Based on the relationship between the porosity and the effective stress and permeability coefficient of the soil，combined with the one-dimensional large-strain consolidation equation proposed by Gibson，the consolidation equation was implified. Then，the separates self-weight consolidation and normal consolidation problems were studied under the corresponding initial and boundary conditions. The analytical solution is verified by the calculation results of the CS2 model of the example in Fox，which calculated porosity ratio of double-sided with self-consolidation with the first layer，and single-sided drainage with the second layer(total 10 layers). The results revealed that the total consolidation degree curve of the analytical solution and the corresponding moment porosity are in good agreement with the calculation results of the CS2 model. Finally the theory has a certain value engineering in the comparative analysis of a reclamation project.
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2020, Vol. 39 
