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Circular pipe-jacking working pit deep foundation pit supporting technology construction method

A technology of deep foundation pit support and construction method, which is applied in the field of deep foundation pit support technology construction of circular pipe jacking work pits, and can solve problems such as support and support

Inactive Publication Date: 2018-05-01
SHANGHAI BAOYE GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at overcoming the defects of the prior art, providing a construction method of deep foundation pit support technology for circular pipe jacking work pits, and solving the problem of support and support in deep foundation pits of circular work pits

Method used

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  • Circular pipe-jacking working pit deep foundation pit supporting technology construction method
  • Circular pipe-jacking working pit deep foundation pit supporting technology construction method
  • Circular pipe-jacking working pit deep foundation pit supporting technology construction method

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Embodiment Construction

[0025] Such as figure 1 , 2 Shown: a construction method of deep foundation pit support technology for a circular pipe jacking pit. The vertical enclosure system of a circular pipe jacking pit foundation pit is composed of cast-in-place piles 1 and double-row jet-grouting piles 2, which pass the inspection of reinforced concrete. The shaft wall 3 and bottom plate of the well are used as the horizontal support system of the deep foundation pit, and the horizontal support system is completed through the following steps:

[0026] Such as image 3 Shown: Step 1: Reinforce the foundation pit enclosure piles and pit bottom. After the maintenance is completed, excavate the first layer of earthwork to the bottom elevation of crown beam 4 (+3.200);

[0027] Such as Figure 4 Shown: Step 2: Carry out crown beam structural reinforcement, formwork installation and concrete pouring work, and maintain;

[0028] Such as Figure 5 Shown: Step 3: After the concrete strength of the crown b...

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Abstract

The invention relates to a circular pipe-jacking working pit deep foundation pit supporting technology construction method. A circular pipe-jacking working pit foundation pit vertical enclosure systemis composed of a cast-in-place pile and double rows of jet grouting piles, the well wall of a reinforced concrete inspection well and a bottom plate serve as a horizontal supporting system of a deepfoundation pit, the horizontal supporting system takes the well wall of the lining reinforced concrete inspection well in the working pit as a support, the well wall of the lining well is subjected tosectionalized inversed construction from top to bottom by combining with earth excavation, finally construction of the bottom plate of the lining well is conducted, and the bottom plate of the liningwell and a well wall structure form a whole body to serve as the horizontal supporting system of the circular pipe-jacking working pit. According to the circular pipe-jacking working pit deep foundation pit supporting technology construction method, the supporting system is reliable, stable, and high in safety, and has certain economic benefits and social benefits.

Description

technical field [0001] The invention relates to a construction method for deep foundation pit support, in particular to a technical construction method for deep foundation pit support of circular pipe jacking work pits. Background technique [0002] At present, there is no application of construction methods similar to the foundation pit support technology of circular pipe jacking pits. Contents of the invention [0003] The invention aims at overcoming the defects of the prior art, providing a construction method of deep foundation pit support technology for circular pipe jacking working pits, and solving the problem of support and support in deep foundation pits of circular working pits. [0004] In order to solve the problems of the technologies described above, the present invention is achieved in that: [0005] A construction method for deep foundation pit support technology of a circular pipe jacking pit, characterized in that: the vertical enclosure system of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 项广政庞伟
Owner SHANGHAI BAOYE GRP CORP
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