Simple reinforcing method of vacuum electroosmosis combined prepressing soft soil foundation

A combined preloading and soft soil foundation technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of short effective vacuum preloading time, low soft soil strength, and long construction period, so as to shorten the construction period, The effect of reducing the consolidation time and improving the reinforcement effect

Active Publication Date: 2012-12-12
WENZHOU UNIVERSITY
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the traditional vacuum preloading treatment method, such as using a large amount of medium-coarse sand as a cushion, consuming a lot of resources, damaging the environment, short effective vacuum preloading time, long construction period, and low strength of soft soil after reinforcement. , providing a simple reinforcement method of vacuum electroosmosis combined with preloading soft soil foundation

Method used

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  • Simple reinforcing method of vacuum electroosmosis combined prepressing soft soil foundation
  • Simple reinforcing method of vacuum electroosmosis combined prepressing soft soil foundation

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Experimental program
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Effect test

Embodiment Construction

[0016] 1. The vacuum preloading method is used for the first reinforcement treatment of the soft soil site

[0017] 1) The site is leveled by machinery, and the levelness reaches 5‰.

[0018] 2) Lay a layer of woven fabric; if dealing with ultra-soft ground, you can lay out 300-400g geotextile. The foam wrapped by the filter membrane is used as an artificial enclosure.

[0019] 3) Carry out the construction of the new vertical drainage board (1), and calculate and determine the spacing, depth and specification of the new vertical drainage board (1) with alternate lengths and shorts according to the geological conditions. The hole diameter of the drainage board is generally 80-120 μm, and the larger hole diameter can be selected appropriately. The exposed length of the drainage board is determined according to the spacing, generally 40-60 cm, and the width of the carbon fiber cloth is 20-30 cm. Smooth and aligned, no mud entering.

[0020] 4) The setting of the horizontal dr...

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Abstract

The invention discloses a simple reinforcing method of a vacuum electroosmosis combined prepressing soft soil foundation, and the method is used for overcoming the poor characteristics of high water content, high compressibility and low shearing strength of a sludge soft clay foundation. The simple reinforcing method comprises the following steps of: firstly, laying a geotechnical cloth or knitted mesh on the surface of a foundation to be processed; then arranging novel longitudinal drainage boards with different lengths, setting a transverse closed drainage system, hermetically connecting longitudinal and transverse systems, lapping conduction wire systems; laying a vacuum sealing film to ensure that the system does not leak air, and pumping water and gas passing through the novel longitudinal drainage boards and the transverse drainage system by using a vacuum pump; connecting the conduction wire systems to the positive pole and negative pole of a power supply, and pumping the water and the gas passing through the novel longitudinal drainage systems and the transverse drainage system by adopting a vacuum electroosmosis combined method; and finally, removing the sealing film, recovering the transverse drainage system and the conduction wire systems, and rolling and leveling ground.

Description

technical field [0001] The invention relates to a ground treatment technology, which is mainly applicable to soft ground and belongs to the field of geotechnical engineering. Background technique [0002] In the southeast coastal area of ​​my country, there are extensive muddy soft soil layers, which bring many difficulties to engineering practice because of their unique characteristics such as high water content, high compressibility, and low shear strength. Therefore, various methods have been adopted in the project to accelerate the discharge of pore water in soft soil, such as surcharge preloading method, vacuum preloading method, etc. After practical application, it has been found that although conventional vacuum preloading technology is an effective soft ground treatment technology , but there are still major limitations. For the ultra-soft foundation that has just been filled by dredging, the reinforcement treatment needs to consume a large amount of dredged sand an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/11
Inventor 王军蔡袁强符洪涛孙林柱丁光亚张乐胡秀青王鹏
Owner WENZHOU UNIVERSITY
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