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Shallow mud foundation treatment method

A technology of silt foundation and treatment method, which is applied in the direction of basic structure engineering, soil protection, construction, etc., can solve the problems of long construction period, large deformation of drainage board, and large use of sea sand, etc., and achieves convenient laying, reduced deformation, and convenient construction. The effect of mechanized construction

Inactive Publication Date: 2015-03-18
OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the existing vacuum preloading method, such as long construction period, the need to use a large amount of sea sand, and large deformation of the drainage board.

Method used

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  • Shallow mud foundation treatment method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with example

[0021] Such as figure 1 and figure 2 Shown, the present invention, concrete implementation method step is as follows:

[0022] Step (1) build floating bridge: construct floating bridge 8 with bamboo pole, steel pipe in conjunction with lightweight material, floating bridge can be used as construction access road, can place vacuum equipment simultaneously.

[0023] Step (2) Zoning: Use color steel plates for division along the periphery of the pontoon bridge, and lay plastic films inside the color steel plates to form water storage enclosures.

[0024] Step (3) Construction of the sealing wall 11 (seal ditch 9).

[0025] Step (4) Water storage at the site: inject water into the divided area with a water pump, and the water depth should be such that the floating raft can float and move during construction.

[0026] Step (5) laying the drainage board: Utilize the floating raft to lay t...

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Abstract

The invention discloses a shallow mud foundation treatment method. The method includes: zoning a site to be treated; laying drain boards in a soft soil layer from top to bottom by a floating raft; connecting the ends and middle of the drain boards to a tube drainage system through tube plate connectors; connecting the upper end of the tube drainage system to a vacuum unit; laying woven fabric, geogrid, nonwoven geotextile and seal film on a mud surface from top to bottom; performing vacuum preloading and unloading after requirements are met. The shallow mud foundation treatment method has the advantages that construction period is shortened greatly, vacuum transmission is effective, using sand cushions is avoided, and deformation of the drain boards is reduced greatly.

Description

technical field [0001] The invention belongs to the technical field of foundation treatment such as construction engineering, port engineering, water conservancy engineering, etc., and in particular relates to a shallow mud foundation treatment method. Background technique [0002] At present, combined with the dredging and dredging projects of the channel and the harbor basin, the dredged silt becomes the filler for land reclamation. Due to the high water content, high compressibility, and extremely low bearing capacity of the dredged fill silt, even in a flowing state, it cannot bear the weight of people and simple construction equipment, and cannot be used for the construction of drainage sand cushions, plastic drainage boards or bagged sand wells. The traditional treatment methods for soft soil foundations include: (1) natural drying; (2) laying woven cloth, thorns and geogrids on the soft soil, and then backfilling with sand; (3) laying drainage boards and laying sealin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
Inventor 戴林伟姚炎明朱明栋陈磊许旺
Owner OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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