High vacuum system combined compaction method foundation treatment method and device

Abstract

The invention relates to the technical field of geotechnical engineering, in particular to a high vacuum system combined compaction method foundation treatment method and a device. The high vacuum system combined compaction method foundation treatment method comprises the steps that a water stop wall is arranged on the periphery of a foundation; a first pipeline and a second pipeline are inserted into the foundation, and the surface of the foundation is covered with a waterproof film; a jet pump is connected with a first pipe body for jet flow and used for pushing water in the foundation to flow downwards, and a vacuum pump is connected with a second pipe body for vacuumizing and used for pumping out the water in the foundation; then a first tamping point on the surface layer of the foundation is tamped, a second tamping point spaced from the first tamping point is tamped, and then the first tamping point is tamped again; and then the first pipe body and the second pipe body are dismantled, and the foundation after the first pipe body and the second pipe body are dismantled is fully tamped, so that the foundation can be reinforced more firmly, and the problems of post-construction settlement and damage to a road structure layer are avoided.

Description

technical field [0001] The disclosure relates to the technical field of geotechnical engineering, in particular to a ground treatment method and device of a high-vacuum system combined with densification. Background technique [0002] Traditional foundation treatment methods include cement mixing pile method and shallow replacement. The construction of the cement mixing pile method can meet the requirements of road construction as a whole, but due to the limitation of the construction level, the quality of the deep mixing pile is difficult to control, the uniformity of the treated foundation is poor, and the shear strength of the cement mixing pile is low. The construction of shallow layer replacement and filling method belongs to shallow layer reinforcement, which can only increase the bearing capacity of the surface layer of the subgrade, and the weak soil layer below the replacement layer cannot be reinforced, and there will be a large post-construction settlement during ...

AI Technical Summary

Problems solved by technology

The construction of the cement mixing pile method can meet the requirements of road construction as a whole, but due to the limitation of the construction level, the quality of the deep mixing pile is difficult to control, the uniformity of the ground after treatment is poor, and the shear strength of the cement mixing pile is low

The construction of shallow layer replacement and filling method belongs to shallow layer reinforcement, which can only increase the bearing capacity of the surface layer of the subgrade, and the weak soil layer below the replacement layer cannot be reinforced, and there will be a large post-construction settlement during the use process, which will affect the road structure layer. cause damage

Especially for areas located in the sedimentary belt of the Yangtze River Basin, where the soil layer within the construction area is silty clay and clay, and the upper layer is rich in stagnant water and confined water, it is more prone to post-construction settlement and damage to the road structure layer.

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