The vacuum consolidation method is to lay a sand cushion on the ground within the soft clay foundation that needs to be reinforced, and then set up a plastic drainage board. The horizontal water filter pipe and vacuum equipment are connected through the plastic drainage board, and an airtight sealing film is covered on it to make the soft soil Isolated from the atmosphere, use a vacuum device to evacuate the air inside the membrane, thus creating an air pressure difference inside and outside the membrane. This part of the air pressure difference becomes a load acting on the foundation. The foundation solidifies as the isotropic stress increases. Knot.
Vacuum consolidation technology is suitable for the reinforcement of soft soil foundations. There are widespread soft clay layers deposited in marine, lake and river phases. This kind of soil is characterized by high water content, high compressibility and low strength. , poor water permeability. Weak clay foundations can undergo considerable deformation or differential deformation under building loads. For weak clay foundations, especially when large-area treatment is required, such as building docks, airports, etc. on soft clay foundations, vacuum preloading method and vacuum stacking combined preloading method are one of the more effective methods for treating such weak clay foundations.
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