Foundation pit reinforcement construction method for mucky soil layer

A construction method and silt-based technology, which can be used in foundation structure engineering, on-site foundation soil survey, excavation, etc., can solve problems such as poor foundation pit stability, foundation pit instability, water gushing and sand gushing at the bottom of the pit, and improve stability Effect

Pending Publication Date: 2022-03-01
CHINA RAILWAY SIXTH GROUP +1
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Problems solved by technology

[0003] Most of the existing foundation pits are constructed by the open-cut method. During the excavation of the foundation pit, excessive deformation and displacement of the pile body is prone to occur, resulting in intrusion into the structural limit, the gap between the ground and the wall, or water and sand gushing at the bottom of the pit, which is easy to cause Overall instability or collapse of the foundation pit
It can be seen that the existing foundation pit construction method has the problem of poor stability of the foundation pit

Method used

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  • Foundation pit reinforcement construction method for mucky soil layer
  • Foundation pit reinforcement construction method for mucky soil layer

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Embodiment Construction

[0033] An embodiment of the present invention provides a method for reinforcing a foundation pit in a muddy soil layer, which is used to improve the stability of the foundation pit during the construction of the foundation pit.

[0034] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the term "comprising" or "having" and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to those explicitly listed in...

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Abstract

The invention relates to the technical field of building construction, and discloses a foundation pit reinforcement construction method for a mucky soil layer, which is used for improving the stability of a foundation pit in a foundation pit construction process. The foundation pit reinforcing construction method for the mucky soil layer comprises the steps that firstly, cement mixing piles are constructed; step 2, constructing a cast-in-situ bored pile; step 3, underground diaphragm wall construction; step 4, precipitation well construction; and fifthly, the foundation pit is excavated. And foundation pit reinforcement construction is conducted through an enclosure structure formed by the cement mixing piles, the cast-in-situ bored piles and the underground continuous wall and a dewatering well drainage system.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for reinforcing a foundation pit in a silty soil layer. Background technique [0002] Foundation pit engineering is an important professional direction in civil engineering. With the continuous acceleration of urbanization and the development of urban underground space, deep and large foundation pit engineering is becoming more and more common. The silty soil layer has the characteristics of deep soft soil, high water content and poor permeability, and it is easy to deform the foundation pit during the excavation process of the foundation pit, which is the research focus of the foundation pit engineering. [0003] Most of the existing foundation pits are constructed by the open-cut method. During the excavation of the foundation pit, excessive deformation and displacement of the pile body is prone to occur, resulting in intrusion into the struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/46E02D5/34E02D19/10E02D5/18E02D1/00E02D33/00
CPCE02D17/04E02D5/46E02D5/34E02D19/10E02D5/18E02D1/00E02D33/00
Inventor 付增辉杨尚张靖文国通肖时光吴文港
Owner CHINA RAILWAY SIXTH GROUP
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