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Pit-in-pit supporting structure and construction method of local flow-plastic muddy soil

A technology for supporting structures, silty soils, applied in the direction of foundation structure engineering, excavation, construction, etc.

Active Publication Date: 2017-06-30
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the defects existing in the prior art, a pit-in-pit support structure of local fluid-plastic muddy soil is now provided to solve the problem of forming a support structure in the local fluid-plastic muddy soil area of ​​the pit-in-pit , and further improve the overall construction efficiency and quality of the pit-in-pit

Method used

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  • Pit-in-pit supporting structure and construction method of local flow-plastic muddy soil
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  • Pit-in-pit supporting structure and construction method of local flow-plastic muddy soil

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Embodiment Construction

[0035] In order to facilitate the understanding of the structure of the present invention, the following description will be made in conjunction with the accompanying drawings and embodiments.

[0036] refer to figure 1 , is a schematic diagram of the overall planar structure of the pit supporting structure of the local fluid-plastic muddy soil mass of the present invention. like figure 1 As shown, the present invention provides a pit-in-pit support structure with local fluid-plastic muddy soil. There are ordinary soil areas and muddy soil areas in the pit-in-pit. The support structure includes the first A support structure 1 and a second support structure 2 supported in the muddy soil area, the first support structure 1 and the second support structure 2 are mutually enclosed and connected; wherein, the first support structure 1 includes: A plurality of steel sheet piles 10 are respectively arranged on the side of the common soil area; purlins 11 surround the inner side of ...

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Abstract

The invention provides a supporting structure for a pit-in-pit with local fluidal plastic sludge soil mass and a construction method of the supporting structure. A common soil mass region and a sludge soil mass region are arranged in the pit-in-pit. The supporting structure comprises a first supporting structure body for supporting the common soil mass region and a second supporting structure body for supporting the sludge soil mass region. The first supporting structure body and the second supporting structure body are connected in an encircled manner. The second supporting structure body comprises high-pressure jet grouting piles, structural steel and crown beams. The sides, encircling the sludge soil mass region, of the high-pressure jet grouting piles further form reinforcing regions. The structural steel is arranged in the reinforcing regions. The crow beams are arranged at the top ends of the high-pressure jet grouting piles. The supporting structure achieves the purpose that the supporting structure is formed in the local fluidal plastic sludge soil mass region of the pit-in-pit, and the overall construction efficiency and quality of the pit-in-pit are further improved.

Description

technical field [0001] The invention relates to a support structure, in particular to a pit-in-pit support structure and a construction method that is particularly suitable for local fluid-plastic muddy soil bodies. Background technique [0002] With the development of construction technology, there are more and more buildings with underground expansion space. As a result, in various deep foundation pit projects, foundation pits in the form of pits often appear. [0003] In coastal areas, the geology is mostly flow-plastic muddy soil, which is deep and poor in quality. Therefore, it is difficult to meet both schedule requirements and economic requirements with only a single support form. Further, in view of the fact that the pit-in-pit support construction of local fluid-plastic muddy soil has high requirements on the effect of support construction, how to reasonably design the support structure is the key to ensure the safety of the foundation pit in the case of complex geo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E02D17/02
Inventor 万利民李凯林文豪王彩明王敬喻小康梁思龙
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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