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Radial Consolidation Theories And Numerical Analysis Of Soft Soil Stabilisation Via Prefabricated Vertical Drains, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Rohan T. Walker

Buddhima Indraratna

In this paper, an analytical solution based on actual radial soil permeability and compressibility is proposed considering the impact of parabolic variation of permeability in smear zone. The use of the spectral method for multilayered soil consolidation is introduced and verified. The Cavity Expansion Theory is employed to predict the extent of soil disturbance (smear zone) caused by the installation of mandrel driven vertical drains. The smear zone prediction is then compared to the data obtained from large-scale radial consolidation tests. Furthermore, the advantages and limitations of vacuum application through vertical drains are discussed using the proposed solutions. The applied …