Deep foundation pit underground space structure and construction method thereof

A technology of space structure and construction method, which is applied in basic structure engineering, underwater structures, excavation, etc., can solve the problems of many consumables and high cost, and achieve the effect of less consumables and low cost

Inactive Publication Date: 2017-11-03
JIANGXI JIYE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the prior art, the retaining wall structure in which the pile body is inserted below the soil at the bottom of the foundation pit is a retaining wall structure with many consumables and high cost.

Method used

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  • Deep foundation pit underground space structure and construction method thereof
  • Deep foundation pit underground space structure and construction method thereof
  • Deep foundation pit underground space structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, a deep foundation pit underground space structure includes: a foundation pit 1, the foundation pit is in the shape of a barrel; several piles 2 are arranged circularly along the pit wall of the foundation pit 1, and are interlocked together , forming a circumferentially closed retaining wall 3; the internal support structure 4 is arranged circularly along the inner wall of the retaining wall 3, and the retaining wall 3 is supported by the inner side of the retaining wall 3 toward the soil A; the pile body The bottom end of 2 is located on the bottom surface of the foundation pit 1.

[0042] The deep foundation pit underground space structure of this embodiment preferably includes: the inner support structure 4 includes at least one inner support ring beam, and the at least one inner support ring beam is arranged annularly along the inner wall of the retaining wall 3 .

[0043] The deep foundation pit underground space structure of this embodi...

Embodiment 2

[0051] This embodiment discloses a construction method for an underground space structure of a deep foundation pit, comprising the following steps: a. setting interlocking pile positions on the leveled construction site, wherein the pile positions are arranged in a circle; b. .Drill holes on the pile site to form pile holes, pour concrete or cement soil into the pile holes to form several pile bodies interlocking with each other, and the pile bodies are arranged in a ring to form a circumferentially closed retaining wall c. Excavating the soil surrounded by the retaining wall to the design depth, and circularly arranging the inner support structure along the inner wall of the retaining wall, wherein, the inner support structure is directed from the inner side of the retaining wall to the soil forming support for the retaining wall, and the design depth is above the bottom of the pile; d. Excavating the soil surrounded by the retaining wall above the bottom of the pile to form a...

Embodiment 3

[0058] This embodiment also discloses a construction method for the underground space structure of a deep foundation pit, which includes the following steps: a. Setting interlocking pile positions on the leveled construction site, wherein the pile positions are arranged in a circle; b. Insert several prefabricated piles with an interlocking structure on the pile position, the prefabricated piles are interlocked together through the interlocking structure, and the prefabricated piles are arranged in a ring to form a closed retaining wall; c. The soil surrounded by the retaining wall is excavated to the design depth, and the inner support structure is arranged circularly along the inner wall of the retaining wall, wherein the inner support structure is formed by the inner side of the retaining wall towards the retaining wall Support, wherein, the design depth is above the bottom of the pile body; d. Excavate the soil surrounded by the retaining wall above the bottom end of the pi...

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Abstract

The invention relates to a deep foundation pit underground space structure. The deep foundation pit underground space structure comprises a foundation pit which is in the shape of a barrel, a plurality of pile bodies which are annularly arranged along the pit wall of the foundation pit and are mutually engaged with one another to form a retaining wall which is closed in the peripheral direction, and an inner supporting structure which is annularly arranged along the inner wall of the retaining wall and supports the retaining wall from the interior of the foundation pit to soil, and the bottom ends of the pile bodies are supported on the bottom face of the foundation pit. Due to the adoption of the design, the pile bodies only serve as media of retaining bodies, the pile bodies do not generate reactive force by means of soil anchored below the bottom face of the foundation pit to absorb the side pressure applied to the pile bodies by soil on the periphery of piles, the side pressure is transmitted to inner supporting ring beams, the inner supporting structure bears more side pressure, and the effect of 'strong supporting and weak piles' is achieved. By additionally arranging the inner supporting ring beams to absorb the side pressure of the soil, needed materials are far less than material needed when the pile bodies are inserted into the foundation part.

Description

technical field [0001] The invention relates to a foundation pit support structure and a construction method, in particular to an underground space structure of a deep foundation pit and a construction method thereof. Background technique [0002] At present, with the development of society, urban land resources are becoming more and more scarce. When the buildings above the ground cannot meet people's needs, it will lead to more and more demands for the use of underground space. The current underground space wants to expand the utilization rate. It can only expand its own area horizontally, or increase the depth of underground space vertically. In modern cities, it is obviously impossible to expand the area of ​​underground space horizontally, and it will affect other urban buildings, which makes it difficult to increase the depth of underground space vertically. Depth has been paid more and more attention by architects. At present, most of the deep foundation pits are des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D29/02
CPCE02D17/04E02D29/02
Inventor 刘献刚胡保根屈峰
Owner JIANGXI JIYE SCI & TECH
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