Application of a Crust Layer for Improving Dredge with Vacuum Pressure

Abstract:

When the vacuum preloading method is applied to improve dredge fill, adequate bearing capacity has be provided for the PVD installation equipment. It is found that filling the dredge surface with a certain think of silt sand can provide enough bearing capacity to support the PVD installation performance. A small scale model test is carried out, which can intuitively demonstrate the effect of this technique. Finite element analysis is performed in which the developing of the plastic zones and the displace vectors can be predicted. The calculated bearing capacity is compared with the conventional analytical solutions achieved by Vesic. The bearing characteristics of the soft soil foundation with a crust layer is discussed, which can provide the technique with a solid theoretical background.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1277-1280
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1277
• Online since: May 2012
• Authors: Shu Wang Yan, Bing Chuan Guo, Li Qiang Sun, Wei Li
• Keywords: Bearing Capacity, Crust, Dredge Fill, Finite Element, PVD Installation, Vacuum Preloading

References

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