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Method for dredging soft foundation by dredger fill and reinforcement

A processing method and technology for soft soil foundation, applied in the field of building foundation, can solve the problems of difficult allocation of resources, difficult to adapt to clay content dredging soft soil, and low cost, so as to shorten the growth time, the treatment effect is remarkable, and the guarantee Effective and smooth effect

Active Publication Date: 2012-12-12
BAOSTEEL ENG & TECH GRP
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AI Technical Summary

Problems solved by technology

The foundation treatment methods mainly include drainage consolidation methods, such as surcharge preloading method, vacuum preloading method and related variants, such as low-level vacuum preloading method, vacuum preloading method without sand cushion, etc., but these technologies usually require It can only be used when construction machinery can enter the site, and the cost and construction period are not advantageous. Specifically, the traditional drainage consolidation technology has the following shortcomings: 1. Construction machinery cannot enter the site. Due to the weak site, It is difficult for people to enter, and no matter how good the foundation treatment method is, it is useless; 2. The construction period is long, usually it takes more than 1 year to dry, plus the construction period during the construction period, usually at least 2 years, it is difficult to reach the owner Urgent demand for land use; 3. The cost is relatively expensive, usually up to 300 yuan / m 2 Above; 4. It is difficult to allocate resources. Generally, the drainage consolidation method requires a sand cushion, but usually in the dredged silt area, the sand resources are very precious, and it is difficult to meet the construction requirements, and the effect of natural treatment is greatly reduced.
[0004] At present, new methods such as high-vacuum compaction method have come out. Although it is also effective in dredging and filling soil, it is still difficult to adapt to dredged soft soil with excessive clay content.

Method used

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  • Method for dredging soft foundation by dredger fill and reinforcement

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Embodiment 1

[0039] A treatment method for dredged soft soil foundation that combines dredging, filling and reinforcement, including: a. filling subdivisions, b. forming a primary drainage system, and c. three steps that are carried out in sequence, the specific steps are as follows Said:

[0040] a. Blow filling partition: such as figure 1 As shown, the blow-fill area 1 is divided into several blow-fill units 11, and the area of ​​each blow-fill unit 11 is 20,000 meters 2 ~100,000 meters 2 ,Such as figure 2 As shown, a separation embankment 22 is built between each dredging filling unit 11 to separate, and the separation embankment 22 is formed by bulldozing and filling, and the soil body of the separation embankment 22 is made up of materials with poor water permeability as much as possible. The inner side and the outer side of the earth embankment 22 are respectively wrapped with a layer of water-retaining film 221. The initial height of the separation earth embankment 22 is 1.5m to...

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Abstract

The invention relates to the field of building foundations, in particular to a method for dredging a soft foundation by dredger fill and reinforcement. The method includes: a, zoning for dredger fill; b, forming a primary drainage system; and c, performing layered and zonal filling and reinforcement. The method is characterized in that in zoning for dredger fill, each filling unit (11) is 20000m<2>-50000m<2> in area; in formation of the primary drainage system, digging crisscross blind ditches (31) on the surface of the filling unit (11), and laying corrugated filter pipes (32) and drain boards (33) on the surface for the filling unit (11); and in layered zonal filling and reinforcement, filling the filling area (1) level by level, and reinforcing with all levels of drainage networks. The method is convenient in construction, short in construction period, effective in foundation treatment and low in construction cost.

Description

technical field [0001] The invention relates to the field of building foundations, in particular to a method for treating dredged soft soil foundations in which dredging, filling and reinforcement are simultaneously carried out. Background technique [0002] The use of dredged soil for land reclamation can dredge waterways on the one hand, and can be used as land-making materials on the other hand. Therefore, more and more projects use dredged soft soil for land reclamation, but dredging soft soil for land reclamation will inevitably encounter problems. Go to the foundation to solve the problem. [0003] The current treatment process for newly dredged soft soil with high water content and almost zero strength is: after the completion of dredging and filling, it should be aired for a period of time (usually more than 1 year) to make the surface layer of the dredged silt form a certain amount. After the strength has been improved, then pave basil to form a construction cushio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 曾四平孙绪东徐营营祝云琪孟庆玲郭宏宇
Owner BAOSTEEL ENG & TECH GRP
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