Abstract

The conventional vacuum prepressing method is to reinforce the soft soil foundation. The process is to lay a certain height of horizontal sand cushion layer on the surface to form a horizontal drainage channel, and then set up a plastic drainage plate and connect it with a pumping pipe to form a vertical drainage channel. This paper analysed the conventional vacuum preloading method with in-site test method, and the foundation reinforce effect was evaluated by monitoring the surface settlement, variation of pore pressure and layered settlement.

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