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Overloaded ground foundation structure of soft foundation seepage-proofing area and treatment method of overloaded ground foundation structure

A technology for weak foundations and areas, applied in foundation structure engineering, soil protection, sheet pile walls, etc., can solve the problems of insufficient foundation structure strength and bearing capacity, weak foundation deformation and creep control ability, and large pile foundation investment. , to achieve the effect of shortening the construction period of piles, reducing the number of piles, and reducing investment costs

Pending Publication Date: 2019-12-20
CHINA NERIN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, we usually use ordinary prestressed pipe piles, cement mixing piles, gravel piles, etc. for foundation reinforcement. This method still has insufficient foundation structural strength and bearing capacity, and weak foundation deformation and creep control capabilities. , large pile foundation investment and other disadvantages

Method used

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  • Overloaded ground foundation structure of soft foundation seepage-proofing area and treatment method of overloaded ground foundation structure
  • Overloaded ground foundation structure of soft foundation seepage-proofing area and treatment method of overloaded ground foundation structure
  • Overloaded ground foundation structure of soft foundation seepage-proofing area and treatment method of overloaded ground foundation structure

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Experimental program
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Effect test

Embodiment 1

[0038] A certain project is located at the mouth of the Yangtze River. It is a hazardous solid waste warehouse, and anti-seepage treatment is required in accordance with environmental protection requirements. The size of the warehouse is 33×285=9405m 2 , the ground load is 8t / m 2 consider. According to the engineering survey report, the soil layer distribution of this project is as follows:

[0039]

[0040] According to the above survey report, the prestressed thin-walled pipe pile 1 used in this project has a diameter of 400mm, a wall thickness of 60mm, a pile spacing of 1.8m, and a pile length of 12m. Other foundation structure settings and foundation treatment methods are as described above. This project uses prestressed thin-walled pipe piles as the vertical reinforcement in the composite foundation, which can ensure that the ground load requirements are met; at the same time, two layers of unidirectional polyester fibers are laid on the top surface of prestressed th...

Embodiment 2

[0042] A certain project is a hazardous solid waste warehouse, and anti-seepage treatment is required according to environmental protection requirements. The size of the warehouse is: 30×60=180m 2 , the ground load is 12t / m 2consider. The proposed site is flat and open, the ground elevation of the site varies from 3.70m to 4.61m, and the ground elevation of the orifice varies from 3.75m to 4.51m. According to the design requirements, the outdoor design leveling elevation of the proposed site is 5.15m~5.30m, so most of the proposed site still needs to be filled with about 0.70m~1.80m. The foundation soil layer of the proposed site is artificially filled sand on the surface, mainly siltation, alluvial origin and granite weathered rock formations. The basement rock of the site is granite formed in the late Yanshan period, and the original landform belongs to the coastal terrace landform unit. According to the engineering survey report, the specific distribution of soil layers ...

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Abstract

The invention discloses an overloaded ground foundation structure of a soft foundation seepage-proofing area and a treatment method of the overloaded ground foundation structure. The structure comprises a composite foundation, a plain soil layer, a gravel cushion layer, a sodium bentonite cushion, a seepage-proofing film, a civil composite drainage network, a plain concrete cushion layer and a reinforced concrete layer. The composite foundation comprises a vertical reinforcement body and a transverse reinforcement body. A prestressed thin-walled pipe pile serves as the vertical reinforcement body. Two layers of one-way polyester fiber beam concentration grids serve as the transverse reinforcement body. The transverse reinforcement body is arranged on the top face of the vertical reinforcement body. The plain soil layer is arranged at the top end of the vertical reinforcement body and on the bottom face of the transverse reinforcement body. The gravel cushion layer, the sodium bentonitecushion, the seepage-proofing film, the civil composite drainage network, the plain concrete cushion layer and the reinforced concrete layer are sequentially arranged on the top face of the transverse reinforcement layer. The treatment method of the overloaded ground foundation of the soft foundation seepage-proofing area is further provided. Pavement is carried out sequentially according to codes of practice. The structural strength and bearing capacity of the foundation can be reinforced, foundation deformation and creeping can be reduced, and the investment cost of a pile foundation can bereduced.

Description

technical field [0001] The invention belongs to the technical field of industrial civil structures, and in particular relates to a heavy-duty ground foundation structure in a weak foundation anti-seepage area and a processing method thereof. Background technique [0002] As the country's environmental protection requirements for engineering projects become more and more standardized and strict, the anti-seepage treatment of the heavy-duty ground of buildings has become an important part of industrial building design. At present, the main way of anti-seepage treatment is to lay anti-seepage membrane, and the anti-seepage membrane has strict requirements on the settlement of the foundation, that is, no large settlement and settlement difference are allowed. Furthermore, the foundation treatment in the anti-seepage area of ​​weak foundation must not only meet the requirements of ground load, but also meet the requirements of anti-seepage on differential settlement of the founda...

Claims

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Application Information

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IPC IPC(8): E02D3/00E02D3/10E02D5/58E02D3/046
CPCE02D3/00E02D3/10E02D5/58E02D3/005E02D3/046
Inventor 徐建李大浪袁昆
Owner CHINA NERIN ENG
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