Vacuum consolidation is a method of soft soil foundation treatment

 Vacuum consolidation is a method of soft soil foundation treatment.

The basic principle is to lay a sand cushion layer on the surface of the soft soil foundation that needs to be reinforced, then lay a vertical drainage body such as a plastic drainage board, and then lay an airtight sealing film on the sand cushion layer to isolate it from the atmosphere. The device extracts the air from the soil under the membrane, thereby forming an air pressure difference inside and outside the membrane. This air pressure difference is equivalent to applying a preload load to the foundation, prompting the water in the soil to be discharged, consolidating the foundation, and improving the strength. To achieve the purpose of strengthening the foundation.

Vacuum consolidation usually has the following significant effects:

advantage:

Accelerated consolidation: It can effectively accelerate the consolidation speed of soft soil foundation, allowing the foundation to achieve higher strength and stability in a shorter period of time.

Improve the bearing capacity: It can greatly improve the bearing capacity of the foundation to meet the requirements of subsequent project construction.

Reduce settlement: It can significantly reduce the later settlement of the foundation and ensure the long-term stability of the project.

Wide scope of application: It can be applied to many types of soft soil foundations, such as silt soil, silt, etc.

Vacuum consolidation is mainly suitable for the following ranges:

Silt, silty soil and other weak foundations: Such soft soil layers are widely found in coastal areas, around lakes and other places.

Large-area site reinforcement: such as large-area soft soil foundation treatment in port terminal yards, airport runways, etc.

Projects with higher requirements for deformation control: because it can effectively reduce settlement and uneven settlement.

Foundation treatment in the early stage of the filling project: Reinforce the soft foundation before carrying out the filling construction.

Foundations with higher groundwater levels: can effectively reduce groundwater levels and improve foundation conditions.