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Deformation control construction method for building close to foundation pit

A deformation control and construction method technology, applied in construction, infrastructure engineering, earthwork drilling, etc., can solve the problems of serious ground subsidence, water and sand gushing, and small reinforcement range, and achieves improved cutting performance, reduced stress transfer, Ease of use for promotion

Pending Publication Date: 2021-12-03
中铁二十局集团第五工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the surrounding environment is complex and the groundwater level is high, the conventional pit bottom reinforcement has shortcomings such as unguaranteed construction quality, small reinforcement range in the passive zone, and inability to form a complete support system. The emergence of disasters such as serious subsidence, water gushing and sand gushing in the pit

Method used

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  • Deformation control construction method for building close to foundation pit
  • Deformation control construction method for building close to foundation pit
  • Deformation control construction method for building close to foundation pit

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Embodiment Construction

[0051] Such as Figure 1 to Figure 10 Shown, a kind of foundation pit of the present invention is adjacent to building deformation control construction method, comprises the following steps:

[0052] Step 1. Deformation protection of adjacent buildings: use multiple cutting pipes 3 around the pile foundation 2 of the adjacent buildings to be pre-reinforced with double-liquid grouting for the valve pipes, and form the cutting pipes for grouting at the position of the cutting pipes 3 Reinforcement body 301, the grouting slurry adopts cement water glass double slurry with a mass ratio of 1:1, the reinforcement depth is from 2m below the adjacent building cap 1 to 3m at the bottom of the foundation pit, and the horizontal distance between two adjacent sleeve cutting pipes 3 is 1m , arrange two rows along the periphery of pile foundation 2 of the adjacent building, with a row spacing of 2m;

[0053] Then carry out the construction of the isolation pile 4, the isolation pile 4 adop...

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Abstract

The invention discloses a deformation control construction method for a building close to a foundation pit. The method comprises the steps: I, conducting deformation protection on the building close to the foundation pit; II, reinforcing isobathic groove walls of a diaphragm wall; III, enclosing the underground diaphragm wall and controlling deformation of adjacent buildings; and VI, reinforcing the pit bottom and the end. According to the construction method, deformation of adjacent buildings can be effectively reduced, safety and normal use of surrounding pipelines and adjacent buildings can be guaranteed, stability of groove walls and smooth construction are guaranteed in the enclosure structure construction process, perfection and smooth tunneling of a shield tunneling machine are guaranteed in the shield station-crossing process, stability of a foundation pit is guaranteed in the foundation pit excavation process, the diaphragm wall has no large deformation, and joints have no water seepage.

Description

technical field [0001] The invention belongs to the technical field of deformation control of buildings adjacent to foundation pits, and in particular relates to a construction method for deformation control of buildings adjacent to foundation pits. Background technique [0002] In recent years, with the rapid development of urban modernization, the use of underground rail transportation space has greatly eased the pressure on urban traffic. Among the tunnel construction methods, the shield method has gradually become the mainstream tunnel construction method due to the advantages of fast construction, no influence on the normal use of ground buildings and traffic, and the rapid update and iteration of shield construction machinery in recent years. In the conventional construction method of standing first and then tunneling, an originating shaft has to go through several shield sections before being hoisted out from the receiving shaft. However, due to the gradual shortage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D15/02E02D31/08E02D5/36E02D5/18E02D5/46E21D9/06
CPCE02D3/12E02D15/02E02D31/08E02D5/36E02D5/18E02D5/46E21D9/0607E02D2250/0023
Inventor 魏辉阮永芬张云飞乔文件吕岩张虔蔡龙闫明邱龙郭宇航潘继强丁仕强李朝成
Owner 中铁二十局集团第五工程有限公司
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