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Technical method for reinforcing foundation by circulating bedding course drainage preloading

A cushion and foundation technology, applied in the field of circulating cushion drainage and preloading to strengthen the foundation, can solve the problems of increasing project cost and relatively expensive price

Inactive Publication Date: 2009-08-26
TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +1
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  • Abstract
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  • Application Information

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Problems solved by technology

This kind of high-quality medium-coarse sand is not only lacking, but also expensive, which increases the project cost.

Method used

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  • Technical method for reinforcing foundation by circulating bedding course drainage preloading
  • Technical method for reinforcing foundation by circulating bedding course drainage preloading

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Embodiment Construction

[0023] A technical method of circulating cushion drainage and preloading to strengthen the foundation, which uses a recyclable horizontal drainage cushion to replace the sand cushion, and uses vacuum pumping or other loading methods to discharge the pore water in the soft soil foundation to strengthen the foundation, so as to achieve the purpose of strengthening the soft foundation. soil purpose.

[0024] The recyclable horizontal drainage cushion is made of permeable materials, produced in a factory and assembled on site.

[0025] The material used for the recyclable horizontal drainage cushion can be geosynthetics or other recyclable water-permeable materials.

[0026] Holes can be reserved on the recirculating horizontal drainage cushion to provide space for the drainage board to be driven into. The drainage mat is outsourced with non-woven fabric or other permeable materials to improve the recovery rate of the drainage mat.

[0027] The thickness of the single-layer recy...

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Abstract

The invention relates to a technical method for reinforcing a foundation by circulating bedding course drainage preloading. The method comprises the following steps: paving a horizontal drainage bedding course, which is made of a circulating water permeable material and has a sealing film on the outer surface thereof, on the surface of a foundation; inserting a plastic drainage plate vertically into the foundation; connecting the upper end of the drainage plate with the inside of a horizontal drainage layer; and vacuumizing and draining the horizontal drainage layer by a vacuum pump to achieve the aim of reinforcing the foundation, wherein after the reinforcement, the horizontal drainage bedding course can be recycled. The horizontal drainage bedding course in the technique is made of the circulating water permeable material and can be reused for multiple times so as to reduce the manufacturing cost for the drainage preloading; when an ultra-soft soil foundation is reinforced, the prior drainage preloading needs to pave a large amount of wattle fences, geotextiles and the like as bearing stratums, but the assembled type horizontal drainage bedding course in the technique can be completely competent for the function and is safer and more reliable; the horizontal drainage layer made of permeable materials is produced by a factory and is assembled on site, and the quality thereof is easier to control compared with a bedding sand paved on site; and natural sandstone materials are not adopted, thus the method is more environment-friendly.

Description

technical field [0001] The invention belongs to a foundation reinforcement method of the foundation soil reinforcement technology of civil engineering. In particular, it relates to a technical method for circulating cushion drainage and preloading to strengthen foundations. Background technique [0002] Drain preloading method is reinforcement One of the most important methods for soft soil foundation, including vacuum preloading method, surcharge preloading method, vacuum combined surloading preloading method, etc. [0003] The method of vacuum preloading to strengthen soft soil foundation was started by China Communications Tianjin Harbor Engineering Research Institute Co., Ltd. in 1980. It was listed as a national "Sixth Five-Year" scientific and technological project in 1983. It has won national patents and Chinese patents. Excellent invention and creation Achievement Award, National "Sixth Five-Year" Scientific and Technological Research Excellence Award, National Fir...

Claims

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Application Information

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IPC IPC(8): E02D19/20E02D3/10
Inventor 李卫杨京方曹永华刘天韵郭述军刘爱民
Owner TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG
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