Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation

A silt foundation and joint reinforcement technology, which is applied in soil protection, infrastructure engineering, construction, etc., can solve the problems that the bearing capacity of the foundation is difficult to exceed, the consumption of electricity and electrodes is large, and the effect of soil reinforcement is not satisfactory, so as to improve the reinforcement Effect, effect of reinforcement effect improvement

Inactive Publication Date: 2012-10-03
南京科冠工程技术有限公司
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Problems solved by technology

[0005] However, engineering practice has shown that although the vacuum preloading technology of sandless cushion is an economical and effective soft ground treatment method, because the vacuum degree decays rapidly along the plastic drainage board with depth, in ultra-soft silt with a small permeability coefficient, The effect of treatment at deeper depths is poor, that is, except for the hard crust with a thickness of 1m~3m on the surface, the rei

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  • Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation
  • Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation
  • Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation

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[0030] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0031] Such as Figure 1~6 As shown, the present invention provides a sandless cushion vacuum preloading-electroosmosis combined method and device thereof for strengthening ultra-soft silt foundation. It is achieved through the following steps:

[0032] Step 1. Preparations before vacuum preloading

[0033] 1) Lay woven cloth: Lay a layer of woven cloth on the surface of the area to be reinforced, and the woven cloth mainly plays the role of separating silt or mud.

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Abstract

The invention discloses a vacuum pre-compaction and electro-osmosis combined reinforcing device and a method for a muck foundation. Sand-free cushion vacuum pre-compaction and electro-osmosis are combined to remove pore water and air under the super-soft musk foundation. Through the vacuum pre-compaction effect at the earlier stage, most of free water in the soil is removed, and part of the free water and weak bound water which cannot be removed by the vacuum pre-compaction can be further removed via the electro-osmosis, thus the reinforcing effect can be greatly improved, the manufacturing cost is increased a little on the basis of the vacuum pre-compaction, and the economical efficiency is remarkable.

Description

[0001] technical field [0002] The invention relates to a method for reinforcing a large-area ultra-soft silt foundation, which is suitable for the treatment of the ultra-soft silt foundation or dredging filling foundation, and belongs to the technical field of civil engineering. Background technique [0003] Sandless cushion vacuum preloading technology, vacuum preloading was proposed by Swedish scientist W.Kjellman in 1952, and was first applied to the foundation treatment project in the expansion of the airstrip in 1958 at the Philadelphia Airport in the United States. Our country began to study and apply this method in the 1980s, and a lot of work has been done in construction technology and reinforcement theory. It has been widely used in the treatment of soft ground in the fields of civil engineering, port engineering and traffic engineering. [0004] Electroosmotic precipitation technology, Reuss first discovered the phenomenon of electroosmosis in clay in 1809, and...

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Application Information

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IPC IPC(8): E02D3/10
Inventor 彭劼熊雄宋恩润洪雷何钜苏波张文彬姬文广
Owner 南京科冠工程技术有限公司
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