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Shallow foundation building protection structure close to deep foundation pit engineering and construction method

A technology for protecting structures and construction methods, applied in infrastructure engineering, construction, protection devices, etc., can solve problems such as building disturbance, building settlement, deformation, etc., to reduce groundwater level fluctuations, reduce deformation and water level changes, and improve stability. sexual effect

Pending Publication Date: 2021-09-24
CHINA CONSTR FIFTH ENG DIV CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the continuous development of the city, the land resources are becoming more and more tense, some municipal projects and construction projects in the city will inevitably be constructed next to the existing buildings, and some new projects are very close or even not far from the existing buildings. to 2 meters, resulting in unavoidable disturbance to the original buildings
[0003] In view of the related technologies mentioned above, the inventor believes that many buildings built in cities before 2000 are shallow foundation structures, which are extremely sensitive to soil deformation / groundwater level fluctuations, and deep foundation pit engineering is carried out next to these shallow foundation buildings During construction, it is extremely easy to cause building settlement, deformation, cracking and other consequences

Method used

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  • Shallow foundation building protection structure close to deep foundation pit engineering and construction method
  • Shallow foundation building protection structure close to deep foundation pit engineering and construction method
  • Shallow foundation building protection structure close to deep foundation pit engineering and construction method

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Embodiment Construction

[0034] The following is attached Figure 1-3 The application is described in further detail.

[0035] The embodiment of the present application discloses a construction method of a deep foundation pit next to a shallow foundation building, referring to Figure 1-3 , including the following steps:

[0036] Step 1, add deep pile foundation 3:

[0037] Step 1.1: Set up detection control points for the original shallow foundation building 1, and collect initial values. The initial values ​​are the position, elevation and real-time displacement parameters of the original shallow foundation building.

[0038] Step 1.2: Construction of the deep pile foundation 3. The construction of the deep pile foundation 3 is carried out along the three sides of the original shallow foundation building 1 close to the new deep foundation pit 4. The process flow is as follows: leveling the site → setting out the pile position → excavating the slurry pool and slurry trench →casing burial→drilling ...

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Abstract

The invention relates to a shallow foundation building protection structure close to deep foundation pit engineering and a construction method. The shallow foundation building protection structure close to the deep foundation pit engineering comprises deep pile foundations close to an original shallow foundation building, the upper ends of the multiple deep pile foundations are connected with a connecting beam, and the connecting beam is connected with a ring beam of the original shallow foundation building; and a soil body between the deep pile foundations and a newly-built deep foundation pit support structure is subjected to grouting reinforcement to form a grouting reinforcement layer, sleeve valve pipes are pre-buried at the bottom of the original shallow foundation building, and meanwhile the working procedure of backward mode first and forward mode second is adopted for deep foundation pit engineering construction. According to the shallow foundation building protection structure close to deep foundation pit engineering and the construction method, disturbance of deep foundation pit engineering to the adjacent original shallow foundation building is greatly reduced through an active and passive protection thought, and the effect of improving the stability of the original shallow foundation building is achieved.

Description

technical field [0001] The application relates to the field of construction engineering, in particular to a protection structure and a construction method for a shallow foundation building adjacent to a deep foundation pit project. Background technique [0002] With the continuous development of the city, the land resources are becoming more and more tense, some municipal projects and construction projects in the city will inevitably be constructed next to the existing buildings, and some new projects are very close or even not far from the existing buildings. to 2 meters, resulting in unavoidable disturbance to the original buildings. [0003] In view of the related technologies mentioned above, the inventor believes that many buildings built in cities before 2000 are shallow foundation structures, which are extremely sensitive to soil deformation / groundwater level fluctuations, and deep foundation pit engineering is carried out next to these shallow foundation buildings D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/00E02D27/12E02D3/12
CPCE02D31/00E02D27/12E02D3/12
Inventor 许宁黄文杰李水生邓洋郑东
Owner CHINA CONSTR FIFTH ENG DIV CORP LTD
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