Vacuum and dynamic compaction synchronization method

A simultaneous method and vacuum technology, applied in soil protection, construction, infrastructure engineering, etc., can solve problems such as failure to reach overload level, limited pressure of drainage consolidation method, engineering failure, etc., to eliminate post-construction settlement and settlement. poor, improving drainage conditions, increasing the effect of permeability

Inactive Publication Date: 2010-11-17
GUANGZHOU SHENGZHOU FOUND ENG
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Problems solved by technology

[0003] Among them, due to the limited pressure provided by the drainage consolidation method, the ideal overload level cannot be achieved. The treated foundation often cannot meet the bearing capacity and deformation requirements of buildings and structures, and the construction period is long.
[0004] The dynamic compaction method is not suitable for strengthening soft soil foundations, especially saturated soft soil foundations. Under the action of strong impact force, not only is it easy to cause buried hammers or surrounding uplifts, but the high-pressure pore water formed cannot be discharged in a short time, thus Causes "rubbery soil", leading to project failure
In addition, the dynamic compaction method cannot strengthen the deep soil. When there is a soft soil l

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  • Vacuum and dynamic compaction synchronization method

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Embodiment Construction

[0026] Such as figure 1 , figure 2 and image 3 Shown, the detailed construction steps of the vacuum dynamic compaction synchronous method of the present invention:

[0027] (1) Arrangement of drainage plate piles, which can be arranged in square and plum blossoms, with a spacing of 0.8-1.4m, determined according to the project situation;

[0028] (2) Determine the depth of the drainage board and the sealing length of the drainage board through exploration. Tanmo takes a square grid as a unit, and the unit width depends on the complexity of the geological conditions of the site. The average value of the thickness of the permeable and air-permeable soil layer 3 at the four corners of the square grid is used as the thickness of the permeable and air-permeable soil layer of the unit. The depth of drainage board 1 is generally set to the bottom of soft soil layer 4. When there is a permeable layer at the lower part of the soft soil layer, there must be a distance of 1m between...

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Abstract

The invention discloses a vacuum and dynamic compaction synchronization method, which comprises the following steps of: a, measuring the thickness of a permeable ventilated soil layer of the surface layer of a treatment field; b, inserting vertical drainage boards into the treatment field according to a square or a quincuncial pile type, and sealing the drainage boards which are positioned in the permeable ventilated soil layer and exposed by using a sealing paint in advance according to the inserting depth and the thickness of the permeable ventilated soil layer before inserting; c, connecting the external ends of the drainage boards to a vacuumizing device for vacuumized construction, performing dynamic compaction on the soft soil foundation in the vacuumizing process synchronously, and assisting information construction simultaneously; and d, meeting the unloading requirement and unloading the vacuum load. By performing vacuum pre-pressing and dynamic compaction synchronously, the method can greatly shorten the construction period, reduce the cost, and create better quality.

Description

technical field [0001] The invention belongs to the technical field of soft ground treatment, and in particular relates to a large-area soft ground treatment method. Background technique: [0002] The existing soft soil foundation treatment techniques commonly used include drainage consolidation method, dynamic compaction method, composite foundation method, etc. [0003] Among them, due to the limited pressure provided by the drainage consolidation method, the ideal overload level cannot be achieved. The treated foundation often cannot meet the bearing capacity and deformation requirements of buildings and structures, and the construction period is long. [0004] The dynamic compaction method is not suitable for strengthening soft soil foundations, especially saturated soft soil foundations. Under the action of strong impact force, not only is it easy to cause buried hammers or surrounding uplifts, but the high-pressure pore water formed cannot be discharged in a short time...

Claims

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Application Information

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IPC IPC(8): E02D3/046E02D3/10
Inventor 梁永根梁恒丰
Owner GUANGZHOU SHENGZHOU FOUND ENG
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