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Foundation pit bottom freezing reinforcing structure and construction method thereof

A technology for strengthening structures and construction methods, which is applied in basic structure engineering, construction, soil protection, etc., and can solve problems such as difficulty in guaranteeing reinforcement effect and quality, uneven distribution of soil strength, etc.

Pending Publication Date: 2019-07-09
HAINAN UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of foundation pit to solve the problem that the reinforcement effect and quality are difficult to guarantee and the strength distribution of the soil after reinforcement is ubiquitous in the existing conventional method of reinforcing the soil at the bottom of the foundation pit. Bottom freezing reinforced structure and its construction method

Method used

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  • Foundation pit bottom freezing reinforcing structure and construction method thereof
  • Foundation pit bottom freezing reinforcing structure and construction method thereof
  • Foundation pit bottom freezing reinforcing structure and construction method thereof

Examples

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Embodiment Construction

[0166] see Figure 1 to Figure 7 Shown:

[0167] In the foundation pit bottom freezing reinforcement structure provided by the present invention, a freezing reinforcement structure 1 is arranged on the foundation pit bottom.

[0168] The freezing reinforcement structure 1 is a full hall type or a grid type or a skirt type or a drawer type. The freezing reinforcement structure 1 is formed by freezing the vertical freezing pipe 2 or the horizontal freezing pipe 3. When the horizontal freezing pipe 3 is used for freezing, the horizontal The freezing tube 3 is U-shaped, the diameter of the vertical freezing tube 2 or the horizontal freezing tube 3 is 108-127mm, the tube spacing of the vertical freezing tube 2 or the horizontal freezing tube 3 is 800mm, and the row spacing is 800mm, the vertical freezing tube 2 or the horizontal The material of the freezing pipe 3 is seamless low carbon steel pipe or PVC pipe or PPR pipe or ABS pipe or PE pipe, and the section of vertical freezing...

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Abstract

The invention discloses a foundation pit bottom freezing reinforcing structure and a construction method thereof. The foundation pit bottom freezing reinforcing structure is formed by arranging a freezing reinforcing structure at a foundation pit bottom. The freezing reinforcing structure is of a full hall type or a grating type or a skirt edge type or a drawing strip type, and the freezing reinforcing structure is formed by freezing through a vertical freezing pipe or a horizontal freezing pipe. The construction method comprises the steps that 1, construction preparation is conducted; 2, a foundation pit support structure is constructed; 3, drilling construction and freezing system installation are conducted; 4, positive freezing is conducted to form the foundation pit bottom freezing reinforcing structure; 5, the freezing pipe is pulled out; and 6, a foundation pit is excavated to the bottom, and a bottom plate is poured. The invention has the beneficial effects that the foundation pit bottom freezing reinforcing structure has the advantages of being high in construction practicability, convenient for controlling construction quality, good in reinforcing effect, especially waterstop effect, safe, reliable and the like, and has large application and popularization value.

Description

technical field [0001] The invention relates to a freezing reinforcement structure and a construction method thereof, in particular to a foundation pit bottom freezing reinforcement structure and a construction method thereof. Background technique [0002] At present, the scale of foundation pits in my country's urban construction is getting larger and larger, and the excavation of earthwork is getting deeper and deeper, which has an increasing impact on the stability of foundation pits and the safety of the surrounding environment, especially in foundation pit projects in soft soil areas. The mechanical indicators such as internal friction angle and cohesion of soft soil are very low, and the soft soil is mostly in a soft plastic or semi-fluid plastic state. If the foundation pit is not designed properly, it is easy to cause excessive lateral displacement of the enclosure structure, surrounding ground settlement and pits. The bottom uplift will affect the stability of the fou...

Claims

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Application Information

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IPC IPC(8): E02D3/115
CPCE02D3/115
Inventor 胡俊潘玉涛姚凯傅勇王志鑫覃长兵佳琳
Owner HAINAN UNIVERSITY
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