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Device and method used for reinforcing by combining vacuum preloading and circular electro-osmosis

A combined cycle and reinforcement device technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of reducing the conductivity of soil and unsatisfactory reinforcement effect, and achieve the goal of maintaining concentration, avoiding loss of positive and negative ions, and compactness. improved effect

Inactive Publication Date: 2015-07-22
HOHAI UNIV
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Problems solved by technology

[0004] In order to solve the above existing problems, the present invention discloses a strengthening device for vacuum preloading combined with electroosmosis. Cathode discharge greatly reduces the electrical conductivity of the soil; while the invention can maintain the electrical conductivity of the soil, it simplifies the construction process

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Embodiment Construction

[0039] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention but not to limit the scope of the present invention.

[0040] figure 1It is a structural schematic diagram of the present invention. It can be seen from the figure that the reinforcement device of the vacuum preloading combined cycle electroosmosis is used to reinforce the foundation with low bearing capacity, including a jet pump 7, a power supply and two outer pipes 4, the two outer pipes 4 are respectively inserted with an inner tube 6 and an electrode rod 8, wherein the electrode rod 8 in one outer tube 4 is connected to the positive pole of the power supply through a wire 11, and the electrode rod 8 in the other outer tube 4 is connected to the negative pole of the power supply through a wire 11 , the two inner pipes 6 are conne...

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Abstract

The invention relates to a device and method used for reinforcing by combining vacuum preloading and circular electro-osmosis. The device comprises two outer tubes, an inner tube and an electrode bar are inserted in each outer tube, the two electrode bars are connected with the positive pole and the negative pole of a power supply, the two inner tube are connected with a jet pump, the surfaces of the two inner tubes are each wrapped by a reverse osmosis membrane, the two outer tubes are inserted into soft soil, and top openings of the two outer tubes are located above the soft soil. The method includes the following steps that firstly, holes are drilled in the soft soil; secondly, the outer tubes are fixed; thirdly, the electrode bars are powered on; fourthly, water is sucked; fifthly, the poles of the power supply are exchanged; sixthly, the jet pump is stopped and the power supply is switched off; seventhly, concrete is injected. The reverse osmosis membranes effectively prevent positive and negative ions in the soil from entering the inner tubes, and loss of the positive and negative ions in the soil is prevented; the positive and negative poles, connected with the electrode bars, of the power supply are exchanged, so that the moving directions of the positive and negative ions in the soil are changed, and the soil is reinforced again in the movement process of the positive and negative ions.

Description

technical field [0001] The invention relates to a strengthening device and method of vacuum preloading combined cycle electroosmosis, which is mainly applied to the reinforcement of foundations with low bearing capacity such as soft soil and super soft soil, and belongs to the technology of vacuum preloading combined with electroosmosis strengthening soft soil foundation engineering field. Background technique [0002] Since Professor Reuss discovered the phenomenon of electroosmosis in clay at the beginning of the 19th century, electroosmosis treatment of soft soil technology has been widely used in engineering practice, such as strengthening slopes, embankments, and dams; improving the axial resistance of piles and reducing negative friction of piles resistance; improve the pullout resistance of ground anchors in the test; improve the resistance of highly sensitive soft soil to cyclic loads, etc. The principle of electroosmotic reinforcement is to use the negative char...

Claims

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Application Information

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IPC IPC(8): E02D3/11
CPCE02D3/11
Inventor 叶汉明彭劼何想谢高强胡建斌
Owner HOHAI UNIV
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