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학술저널
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대한토목학회 KSCE JOURNAL OF CIVIL ENGINEERING KSCE JOURNAL OF CIVIL ENGINEERING Vol.10 No.6
발행연도
2006.11
수록면
427 - 434 (8page)

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Vacuum consolidation is a soil improvement technique that accelerates consolidation of soft ground by using the action of the atmospheric pressure in combination with a ground pore-pressure relief system. Dredged and reclaimed soft clays form slurry state which is very high water content and very low shear strength, experience large self-weight consolidation with nonlinear compressibility and permeability phenomenon. Applying vacuum consolidation method with horizontal drain in order to improve reclaimed soft ground, non-linear finite consolidation phenomenon takes place. To analyze the non-linear finite consolidation of reclaimed ground, a material functions which represent nonlinear effective stress-void ratio-permeability relationship were obtained with slurry consolidation apparatus and numerical analysis program was developed. From the back analysis of pilot test, a material functions which fit to field condition were obtained. It shows reasonably good match to the observed settlement. Design parameter's effects with lateral vacuum method were analyzed.

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Abstract
1. Introduction
2. Horizontal Vacuum Consolidation Method
3. Governing Equation
4. Laboratory Test
5. Numerical Studies
6. Analysis of Consolidation Effect with Various Design Factors
7. Conclusions
References

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