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Method for quickly processing heavy layer soft soil foundation

A soft soil foundation and fast technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as inability to backfill, rigidity and integrity that cannot meet construction requirements, and meet construction settlement requirements and bearing capacity requirements , low project cost, and no pollution to the environment

Inactive Publication Date: 2008-11-12
张伯谦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Insufficiency of traditional soft soil foundation treatment methods
The traditional reinforcement material used in soft soil foundation treatment is polymer geogrid, whose rigidity and integrity cannot meet the construction requirements, and it is even impossible to perform operations such as backfilling in the fluid-plastic silt

Method used

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  • Method for quickly processing heavy layer soft soil foundation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Refer to Figure 1. Be 8m in thickness, on the silt layer 1 that surface water content is 38%, lay bamboo grid 2, described bamboo grid 2 is the grid that is 0.5cm in thickness, the width is 1.8cm, and the length is 2.5m bamboo strips criss-cross to form woven body, the horizontal length of the grid is 10cm, and the vertical length is 10cm. The interlaced connection of the bamboo strips on the bamboo grid is fixed by the drilling holes arranged on it with connecting bolts. The unit weight of the bamboo grid 2 is 5kg / m 2 . After completing the laying of the bamboo grid 2, a medium-coarse sand layer 4 with a thickness of 0.8m is artificially laid thereon immediately, and the thickness needs to be kept uniform during laying.

[0033] There are several vertically penetrating plastic drainage boards 5 arranged in the mud layer 1 , and the upper ends of the plastic drainage boards 5 enter into the medium-coarse sand layer 4 .

[0034] Buried water collection wells 6 at inter...

Embodiment 2

[0041] Refer to Figure 1. The difference with embodiment 1 is: be 12m in thickness, be that 300g / m is laid on the silt layer 1 that surface water content is 50% 2 One layer of knitted geotextile, and then lay bamboo grid 2 on it, and the bamboo grid 2 is a grid-like weaving body formed by criss-crossing bamboo strips with a thickness of 0.8cm, a width of 2.0cm, and a length of 3.0m. The horizontal length of the grid is 12cm, and the vertical length is 12cm. The interlaced connection parts of the bamboo strips on the bamboo grid are fixed by connecting bolts through the drill holes arranged on it. The unit weight of the bamboo grid 2 is 5kg / m 2 . After the laying of the geotextile and the bamboo grid 2 is completed, a medium-coarse sand layer 4 with a thickness of 1.0 m is artificially laid on it immediately, and the thickness needs to be kept uniform during laying.

[0042] All the other steps are the same as in Example 1.

[0043] After testing, the silt soil layer treated...

Embodiment 3

[0045] Refer to Figure 1. The difference with embodiment 1 is: be 15m in thickness, on the silt layer 1 that surface layer water content is 80%, laying one deck specific gravity earlier is that 300g / m 2 Knitted geotextile, and then pave bamboo grid 2 on it, described bamboo grid 2 is a grid-like weaving body formed by criss-crossing bamboo strips with a thickness of 1.0cm, a width of 2.5cm, and a length of 4.0m. The horizontal length is 15cm, and the vertical length is 15cm. The interlaced joints of the bamboo strips on the bamboo grid are fixed by connecting bolts through the drill holes arranged on it. The unit weight of the bamboo grid 2 is 5kg / m 2 . After the laying of the geotextile and the bamboo grid 2 is completed, a medium-coarse sand layer 4 with a thickness of 1.5m is artificially laid on it immediately, and the thickness needs to be kept uniform during laying.

[0046] All the other steps are the same as in Example 1.

[0047] After testing, the silt soil layer ...

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Abstract

The invention discloses to a method for quickly treating thick soft earth foundation. The method for quickly treating thick soft earth foundation does not need to wait for the curing of sludge surface before the subsequent construction processes with manual effort or mechanical equipment by utilizing bamboo grids, and the characteristics of comparatively small specific gravity and certain strength of bamboo grids, and the method also can synchronously impose pre-pressing load and dynamic load to prevent the formation of hard and thin shell layer of the earth layer to be treated in a short time during the pre-pressing process, thus guaranteeing that the pre-pressing load and the dynamic load can be effectively transmitted to the soft earth layer in the lower part to finally form a flaky super-solid hard shell layer. Meanwhile, the close combination of the hard shell layer and the bamboo grid increases the rigidness of a bottom board and the stress dispersion effect of the hard shell layer, thereby ensuring that the processing of the soft earth foundation can meet the requirements on construction settlement and loading in a short time.

Description

technical field [0001] The invention relates to the field of foundation treatment of geotechnical engineering, in particular to a method for foundation treatment of thick-layer soft soil. Background technique [0002] 1. Thick-layer soft soil foundation treatment has broad application prospects [0003] With the rapid development of my country's construction industry and the increasing shortage of land resources, more and more construction projects are selected on the silt soft soil foundations along the coast, along the river, and along the lake, and the land reclamation projects are also increasing rapidly. Utilize high-water-content thick-layer soft soil along the coast, rivers, and rivers to fill land and build land with a construction area of ​​more than 1 million m 2 The construction site of the project can also be seen everywhere. The soft soil foundation of this kind of project site has the characteristics of high water content, high compressibility, poor permeabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/02E02D3/10E02D3/046
Inventor 张伯谦
Owner 张伯谦
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