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Technique for quickly reinforcing soft soil foundation

A soft soil foundation and technical technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of time-consuming and high cost, and achieve the effects of shortening the construction period, lowering the groundwater level, and saving costs

Inactive Publication Date: 2008-10-01
CCCC FOURTH HARBOR ENG CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While more effective, it is costly and time consuming

Method used

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  • Technique for quickly reinforcing soft soil foundation
  • Technique for quickly reinforcing soft soil foundation
  • Technique for quickly reinforcing soft soil foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 As shown, the construction process of the air-permeable layer without sand inclusions on the soft soil foundation:

[0014] ①Clear and level the surface of the soft soil foundation.

[0015] ② Arrange horizontal and vertical drainage facilities on the reinforced site to form a three-dimensional drainage system, arrange sealing membranes, use pumps and vacuum pumps to pump water along the drainage system, and carry out vacuum preloading for about 30 days to promote the soft soil foundation to partially consolidate. Consolidation degree reaches more than 70%.

[0016] ③ Unloading, peel off the vacuum preloaded sealing film.

[0017] ④ Carry out strong compaction, heavy compaction or compaction construction.

[0018] Before dynamic compaction, heavy compaction or compaction reinforcement, a representative site should be selected for trial compaction to determine the construction technology and construction parameters of dynamic compaction, heavy compact...

Embodiment 2

[0021] Such as figure 2 As shown, the construction process of the air-permeable layer with sand inclusions on the soft soil foundation:

[0022] ①Clear and level the surface of the soft soil foundation.

[0023] ②At the boundary of the reinforced site, for the sections with permeable and air layers within 10 meters underground, continuously lap the silt mixing piles and insert plastic sealing films to form a sealing wall for sealing.

[0024] ③ Arrange horizontal and vertical drainage facilities to form a three-dimensional drainage system, arrange sealing membranes, use pumps and vacuum pumps to pump water along the drainage system, and carry out vacuum preloading for about 30 days to promote the soft soil foundation to achieve partial consolidation. The degree reaches more than 70%.

[0025] ④ Unloading, peel off the vacuum preloaded sealing film.

[0026] ⑤ In order to ensure that the groundwater level will not rise during the process of dynamic compaction, heavy compact...

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Abstract

The invention relates to a soft ground quick solidifying method, which comprises following steps: 1, vacuum pre-compress discharging water and solidifying the soft ground for 30 days to reach more than 70% of solidify degree;, b, removing the vacuum pre-compress sealing film, to process power solidifying treatment as compressing, etc. the invention combines the vacuum pre-compress water discharge solidifying method and the power solidify method, to improve the efficiency, reduce the cost and time as 1 / 3-3 / 2 reduced time of before. It can be used in non-sand ventilating layer of soft ground and the sand-interlayer ventilating layer.

Description

technical field [0001] The invention relates to a soft soil foundation rapid reinforcement construction technology. Background technique [0002] The existing rapid reinforcement methods for soft soil foundations are mainly drainage consolidation methods, including vacuum preloading, surcharge preloading, or vacuum combined surcharge preloading, etc. While effective, it is costly and time consuming. Due to the high initial water content in the soft soil foundation, rapid reinforcement methods such as dynamic compaction, heavy compaction or compaction cannot be directly implemented. Contents of the invention [0003] The purpose of the present invention is to solve the difficult problem of rapid reinforcement of soft soil foundations, and provide a construction technology for rapid reinforcement of soft soil foundations while reducing costs and shortening construction time. [0004] In order to achieve the purpose of the above invention, the present invention adopts the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10E02D3/046E02D19/10
Inventor 董志良郑新亮张功新戚国庆李征
Owner CCCC FOURTH HARBOR ENG CO LTD
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