Vacuum infiltration adsorption reinforcing method for soft soil foundation

A soft soil foundation and vacuum infiltration technology, which is applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of long construction processing time, expensive sand cushion materials, and increased construction costs, so as to avoid the limitation of a single area Effects of restricting, reducing construction costs and improving work efficiency

Inactive Publication Date: 2007-09-26
李杰
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AI Technical Summary

Problems solved by technology

[0016] 1) The vacuum degree must rely on the sand cushion and be transmitted to the deep part through the drainage board, which has low efficiency and large energy loss;
[0017] 2) The sand cushion must be laid, which wastes the natural resources of sand, and at the same time, the construction cost is increased because the sand cushion material is more expensive;
[0019] 4) The construction process takes a long time and delays the construction progress
[0020] 5) A single reinforcement area is limited by the construction process and cannot be adapted to a large area (reinforcement area greater than 28,000 m 2 ) needs

Method used

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  • Vacuum infiltration adsorption reinforcing method for soft soil foundation
  • Vacuum infiltration adsorption reinforcing method for soft soil foundation
  • Vacuum infiltration adsorption reinforcing method for soft soil foundation

Examples

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Embodiment Construction

[0047] As shown in Figure 1 and Figure 2, the steps used in this embodiment are as follows:

[0048] 1) Set multiple vertical drainage and exhaust channels 1 vertically and horizontally in the soft soil foundation; the vertical drainage and exhaust channels 1 use plastic drainage boards with a cross-sectional size of (100*4mm), outsourcing non-woven geotextiles, specifications ≥90g / cm 2 ;The spacing of drainage boards is 1.0m;

[0049] 2) On the surface of the soft soil foundation, lay a plurality of interconnected horizontal drainage and exhaust channels 2 in a network structure; the horizontal drainage and exhaust channels 2 use φ60 plastic corrugated pipes with holes, and the layout size is 1.6 *15m 2 ;

[0050] 3) Directly connect the unearthed part of the vertical drainage and exhaust channel 1 with the horizontal drainage and exhaust channel 2, and each plastic drainage plate needs to be wound with the horizontal bellows for more than two turns, and tied together with...

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Abstract

The invention discloses a vacuum penetrate adsorption strengthen method on soft foundation, belonging to construction technique, which arranges vertical discharge and exhaust tubes in the foundation, and lays communicated network horizontal discharge and exhaust tubes on the surface of the foundation, and connects the two kinds of tubes, arranges injection vacuum device at the ends of the horizontal tubes, lays geotechnical fabric and 2-3 layers of geotechnical films at the upper part of the horizontal tubes, while the circumference of geotechnical film is pressed 50cmm into waterproof foundation, and uses injection vacuum device to vacuum the discharge and exhaust systems of solid network, to discharge the free water and gas in soil, when the ground sink speed is 2mm / d in continuous five days, stops the injection vacuum device, to complete the strengthening on the soft foundation. The invention has deeper vacuum transmission, short construction period, saved sand resource and reduced cost on unit area than traditional vacuum pre-press method.

Description

1. Technical field [0001] The invention belongs to the field of engineering construction, and in particular relates to a vacuum infiltration and adsorption reinforcement method for soft soil foundations, especially muddy soil foundations along coasts and rivers. 2. Background technology [0002] There are many accidents and defects caused by soft soil foundation in engineering. To reduce the hazards of soft soil foundation, engineering and technical personnel must be familiar with the characteristics of local soft soil. The so-called soft soil is the saturated weak cohesive soil formed by biochemical action deposited in still water or slow flowing water environment. The "Engineering Geology Handbook" published by China Construction Industry Press calls soft soil as "soft soil refers to a kind of cohesive soil from soft plastic to flow plastic state with high natural water content, high compressibility and low bearing capacity, such as silt and silt. textured soil and other ...

Claims

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Application Information

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IPC IPC(8): E02D3/10
Inventor 李杰
Owner 李杰
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