Soft groundsill fastening method based on vacuum electroosmosis composite preloading method

A technology of vacuum preloading and soft soil foundation, which is applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of long construction period, low strength of soft soil on site, short effective vacuuming time, etc. The effect of improving the knot index, improving the reinforcement effect, and prolonging the effective vacuuming time

Inactive Publication Date: 2008-08-20
张志铁
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the effective vacuuming time is short, the construction period is long, and the strength of the soft soil after reinforcement is not high when the exi

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  • Soft groundsill fastening method based on vacuum electroosmosis composite preloading method
  • Soft groundsill fastening method based on vacuum electroosmosis composite preloading method
  • Soft groundsill fastening method based on vacuum electroosmosis composite preloading method

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 , 2 , 3 shown.

[0025] A soft soil foundation reinforcement method based on vacuum electroosmosis composite preloading method, it comprises the following steps:

[0026] 1. Reinforce the soft soil of the site by vacuum preloading method

[0027] see figure 1 , first level the site 1, make the working surface 2 and the sealing ditch 11, lay a sand layer with a thickness of 0.4-0.6m 5, vertically insert the plastic drainage board 3, lay the vacuum horizontal pipe network 4, install the vacuum system 6, lay the sealing film 7 and The periphery of the membrane is tightly pressed into the sealing groove 11, the vacuum preloading starts, and the vacuum pressure is controlled to be not less than 80kPa. Installing the vacuum system 6 refers to laying horizontal main pipes and branch pipes on the working surface of the site, and the...

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Abstract

The invention relates to a reinforcing method of a soft soil ground based on a vacuum electro-osmotic compound preloading method, and aims at solving the problems that the effective vacuum-pumping time is short, the construction period is long and the intensity of the soft soil in a site is low after reinforced when using the existing vacuum preloading method to process the superfine soil particles into the soft soil ground of a main body; the method comprises the following steps: (1) the vacuum preloading method is adopted to reinforce the soft soil of the site once; (2) a secondary reinforcement is done for the soft soil of the site by adopting a vacuum preloading combined electro-osmosis method; (3) vibrating rolling and leveling of the site are carried out finally; the reinforcing method has the advantages of high consolidation index, good cost performance and short construction period.

Description

technical field [0001] The invention relates to a deep comprehensive reinforcement method for large-area ultra-soft foundations, in particular to a reinforcement method for flow mud, silt and silty soil foundations mainly composed of ultrafine particles and with a very small permeability coefficient k, specifically A soft soil foundation reinforcement method based on vacuum electroosmosis composite preloading method. Background technique [0002] Vacuum preloading method has been widely used in my country since the 1980s. It is a mature and effective soft soil foundation treatment method, but this method has the following disadvantages and shortcomings: The soft soil strength index of the site is low, and the bearing capacity of the site does not exceed 80kPa; (2) In order to make the dredged mud reach a sufficient consolidation index under the vacuum negative pressure of 80kPa, it will take a long time to vacuumize the site, and as a vertical The dredging mud composed of ult...

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Application Information

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IPC IPC(8): E02D3/02E02D3/10E02D3/11E02D3/046
Inventor 张志铁
Owner 张志铁
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