Processing method for reinforcing soft clay ground through vacuum preloading in combination with electro-osmosis method

A vacuum preloading method and treatment method technology, which is applied in the fields of soil protection, infrastructure engineering, construction, etc., can solve problems such as low efficiency, uneven reinforcement of soil, silting of plastic drainage boards, etc., and achieve the goal of improving treatment efficiency Effect

Active Publication Date: 2013-01-30
SHANGHAI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The present invention can improve the efficiency of vacuum transfer and utilization when the first stage of vacuum preloading is used alone, and improve the drainage effect of deep soil. It can effectively improve the unevenness of soil reinforcement when vacuum preloading method and electroosmosis method work alone, the blockage of plastic drainage boards when vacuum preloading works alone, and the high energy consumption and low efficiency of traditional vacuum preloading method combined with electroosmosis method. problems, significantly improve the uniformity of soil treatment, improve the overall reinforcement effect of the soil, and realize the rapid, efficient and energy-saving joint reinforcement construction

Method used

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  • Processing method for reinforcing soft clay ground through vacuum preloading in combination with electro-osmosis method
  • Processing method for reinforcing soft clay ground through vacuum preloading in combination with electro-osmosis method
  • Processing method for reinforcing soft clay ground through vacuum preloading in combination with electro-osmosis method

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Effect test

Embodiment 1

[0034] see Figure 1 to Figure 4 , a treatment method for vacuum preloading combined with electroosmosis to strengthen soft clay foundations, comprising the following steps:

[0035] ① Arrangement of three-dimensional closed vacuum preloading system:

[0036] The vacuum preloading method used in the joint reinforcement of vacuum preloading and electroosmotic method is a three-dimensional airtight independent vacuum preloading method, and its construction layout process is as follows:

[0037] a. After the first geotextile is laid on the site that needs to be treated, the plastic drainage boards 5 in the soil are laid in rows, and the plastic drainage boards 5 in the soil are connected to the airtight sealed steel wire water pipe 4 through the sealing joint 7 of the plastic drainage board in the soil. Then each sealed steel wire water pipe 4 is connected to the airtight sealed steel wire main pipe 10 respectively through the tee joint 9 to form a plastic drainage board draina...

Embodiment 2

[0045] This embodiment is basically the same as Embodiment 1, especially in that:

[0046] In this embodiment, the drainage system of the plastic drainage board in the soil and the drainage system of the plastic drainage board on the surface of the soil independently perform switch control and vacuum adjustment to realize the independent manual regulation of the vacuum in the soil and the vacuum under the membrane, and according to the vacuum preloading According to the actual needs of the implementation stage, adjust the optimal ratio of the vacuum degree in the soil to the vacuum degree under the membrane, greatly improve the vacuum degree transmission and the treatment effect of deep soil, the construction is fast, efficient and energy-saving, and intelligent control can be realized.

Embodiment 3

[0048] This embodiment is basically the same as the previous embodiment, and the special features are:

[0049] In this embodiment, the electroosmotic electrode adopts ordinary light round steel bar, and the diameter of the steel bar used as the electroosmotic cathode 11 is smaller than the diameter of the steel bar used as the electroosmotic anode 12, no special design is required for the electrode structure, and the selection and production costs of the electrode are low .

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Abstract

The invention discloses a processing method for reinforcing a soft clay ground through vacuum preloading in combination with electro osmosis. According to the method, solid airtight separate vacuum preloading in combination with electric osmosis in which reinforcing steel bars are taken as the electro osmosis electrodes are adopted for reinforcing the ground. During the arrangement of vacuum preloading systems, by using a separate seal joint, a sealed water pipe, a sealed main pipe and a vacuumizing device, plastic water drainage plates which are inserted into the soil and plastic water drainage plates which are paved on the surface of the soil form two sets of separate airtight vacuum systems which can be separately controlled to turn on or off, and the vacuum degrees of the two vacuum systems can be separately regulated. After the vacuum systems are arranged, rebar electrodes are inserted in rows in the gaps between the plastic water drainage plates inserted in the soil, and then the perforations between the rebar electrodes and the vacuum preloading airtight systems are sealed. With the processing method, the vacuum transfer and utilization efficiency is improved, the water drainage effect of deep-layer soil is improved, the soil processing uniformity is remarkably improved, the overall soil reinforcing effect is improved, and fast, efficient and energy-saving hybrid reinforcement construction is realized.

Description

technical field [0001] The invention relates to a foundation reinforcement method in the field of geotechnical engineering, in particular to a foundation reinforcement treatment method combined with vacuum preloading and electroosmosis method, which is mainly suitable for drainage treatment of soft soil, ultra-soft soil foundation or sludge. Background technique [0002] In the early 19th century, Russian scholar Reuss discovered electroosmosis in clay. In the 1930s, Leo Casagrande realized that electroosmosis treatment plays an important role in improving the shear strength and stability of fine-grained soil, and applied electroosmosis technology to soft soil reinforcement in geotechnical engineering. After that, scholars from various countries have carried out a lot of research work on it, and it has also been successfully applied in engineering. The electroosmosis method has the advantages of fast reinforcement speed, good reinforcement effect on fine-grained and low-per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/11
Inventor 刘飞禹张乐王军蔡袁强
Owner SHANGHAI UNIV
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