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Collapsible loess area foundation pit excavation supporting structure and process thereof

A technology for collapsible loess and support structures, which can be used in infrastructure engineering, excavation, construction, etc., to solve the problems of slow construction and long construction period, and to achieve enhanced support effects, construction period savings, and enhanced tightness Effect

Active Publication Date: 2021-07-16
CHINA FIRST HIGHWAY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the reinforced concrete purlins need curing time, and there are defects such as long construction period and slow construction

Method used

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  • Collapsible loess area foundation pit excavation supporting structure and process thereof
  • Collapsible loess area foundation pit excavation supporting structure and process thereof
  • Collapsible loess area foundation pit excavation supporting structure and process thereof

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Embodiment Construction

[0043] The following is attached Figure 1-5The application is described in further detail.

[0044] The embodiment of the present application discloses a foundation pit excavation support structure in a collapsible loess area.

[0045] refer to figure 1 , the ground is filled with bored piles 1, and there are multiple bored piles 1 poured, all the bored piles 1 enclose the excavation area of ​​the foundation pit, and each bored pile 1 is fixedly equipped with a corbel 2, and the adjacent bollards The legs 2 are equipped with profiled steel 3, and a support assembly 4 is provided between the profiled steels 3 on the two walls of the foundation pit. Press the section steel 3 located on the two opposite sides of the foundation pit, so that the purlin formed by the section steel 3 can replace the cement concrete purlin to support and protect the foundation pit. There is no maintenance time, and the support structure of the foundation pit can be achieved quickly. Construction, ...

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Abstract

The invention relates to a collapsible loess area foundation pit excavation supporting structure and a process thereof, and belongs to the technical field of foundation pit excavation supporting. The structure comprises a plurality of drilling piles; the drilling piles are embedded and fixed in the ground; a foundation pit excavation area is defined by the drilling piles; each drilling pile is fixedly provided with a bracket; section steel is erected on the adjacent brackets; the section steel abuts against the top faces of the brackets and meanwhile abuts against the outer walls of the drilling piles; positioning blocks are arranged on the section steel in a sliding mode; the positioning blocks are located on the side walls, away from the inner wall of a foundation pit, of the section steel; the positioning blocks slide in the length direction of the section steel; the positioning blocks abut against the outer walls of the drilling piles; all the section steel is arranged by a circle along the inner wall of the foundation pit; supporting assemblies are arranged between the section steel located on the two opposite side walls of the foundation pit correspondingly; and the ends of the supporting assemblies are fixedly connected with the corresponding close section steel and abut against the top faces of the brackets. The collapsible loess area foundation pit excavation supporting structure has the effects of being rapid in construction and shortening the construction period.

Description

technical field [0001] The present application relates to the technical field of foundation pit excavation support, in particular to a foundation pit excavation support structure and technology in a collapsible loess area. Background technique [0002] Collapsible loess refers to the soil that undergoes significant additional deformation due to the structural damage of the soil after flooding under the action of the self-weight stress of the overlying soil layer, or under the joint action of the self-weight stress and additional stress, and belongs to special soil. Some miscellaneous fills are also collapsible. Loess widely distributed in parts of Northeast, Northwest, Central and East China is collapsible. [0003] In the existing foundation pit support structure, the inner support structure usually uses the purlin structure. The purlin refers to the beam set on the upper part of the support pile, which is mainly used to keep the formwork in the assembled plane shape and c...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 徐厚庆倪晗王晓魁张雅欣
Owner CHINA FIRST HIGHWAY ENG
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