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Hydraulic reclamation soft area foundation treatment method

It is a foundation treatment and weak technology, which is applied in the direction of infrastructure engineering, soil protection, building components, etc. It can solve the problems of vertical drainage plate deformation, vacuum degree loss, bending, etc., so as to achieve uniform distribution of bearing capacity and ensure construction safety , The effect of reducing material input

Active Publication Date: 2021-02-26
CHINA HARBOUR ENGINEERING
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  • Abstract
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Problems solved by technology

[0003] At present, the use of vacuum preloading method to treat the foundation in the weak area of ​​dredging fill has the problems of serious loss of vacuum degree and poor drainage and consolidation effect inside the soil; at the same time, the large settlement of the dredged fill soil will also cause vertical drainage The problem of plate deformation or even bending will further affect the effect of foundation reinforcement
Moreover, for the foundation in the weak area of ​​dredging filling with a large depth, the current foundation treatment method will have the problems that the surface of the foundation is hard and the inside is soft, the deep soil reinforcement is not enough, and the distribution of the bearing capacity of the entire foundation is extremely uneven, which will affect the quality of civil engineering and construction safety

Method used

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  • Hydraulic reclamation soft area foundation treatment method
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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0033] It should be noted that in the description of the present invention, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the invention.

[0034] like Figure 1~4 As shown, the present invention provides a kind of ground treatment method for filling weak areas by dredging, comprising the following steps:

[0035] Step 1. Set up a cofferdam 1 around the area to be filled, and then fill the soft soil ...

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Abstract

The invention discloses a hydraulic reclamation soft area foundation treatment method. The method comprises the following steps that S1, hydraulic reclamation is carried out on soft soil to form a first hydraulic reclamation soil layer; S2, vacuum preloading treatment is carried out; S3, a plurality of first steel pipes are arranged in the first hydraulic reclamation soil layer; S4, first geobagsare filled with gravels; S5, a horizontal plate is arranged, and a plurality of first gravel piles are formed through grouting; S6, a plurality of second steel pipes are arranged at intervals, and hydraulic reclamation is carried out on soft soil to form a second hydraulic reclamation soil layer; S7, any second steel pipe is filled with gravels, and vacuum preloading treatment is conducted; S8, third steel pipes sleeve the second steel pipes, and and hydraulic reclamation is carried out on soft soil to form a third hydraulic reclamation soil layer; S9, the steps S7-S8 are repeated to form an Nth hydraulic reclamation soil layer to reach a set height; S10, vacuum preloading treatment is carried out; and S11, high-pressure grouting is conducted to form a plurality of second gravel piles. Themethod has the beneficial effects of being good in reinforcing effect, high in foundation bearing capacity and uniform in bearing capacity distribution.

Description

technical field [0001] The invention relates to the technical field of ground treatment. More specifically, the invention relates to a foundation treatment method for dredging and filling weak areas. Background technique [0002] With the rapid development of the economy, a large number of projects need to be carried out in the soft soil areas of the coast and along the river, but the foundations in these areas are generally difficult to meet the needs of civil engineering construction. Therefore, it is necessary to treat the foundation to make the bearing capacity meet the requirements. very important process. There are many methods for foundation treatment. Among them, the vacuum preloading method is widely used in foundation reinforcement projects in soft soil areas such as ports, sea reclamation and land reclamation, and is one of the most effective methods for treating dredged fill. [0003] At present, the vacuum preloading method is used to treat the foundation in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B2/00E02D3/00E02D3/08E02D3/10
CPCE04B2/00E02D3/00E02D3/08E02D3/10
Inventor 杨佳岩
Owner CHINA HARBOUR ENGINEERING
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