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A foundation pit excavation support structure and technology in collapsible loess area

A technology for collapsible loess and supporting structure, which is applied in basic structure engineering, excavation, construction, etc., can solve the problems of slow construction and long construction period, and achieve the effect of strengthening support, saving construction period, and strengthening the degree of tightness. Effect

Active Publication Date: 2022-06-28
CHINA FIRST HIGHWAY ENG CO LTD +1
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  • Abstract
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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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  • A foundation pit excavation support structure and technology in collapsible loess area
  • A foundation pit excavation support structure and technology in collapsible loess area
  • A foundation pit excavation support structure and technology in collapsible loess area

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Embodiment Construction

[0043] Attached to the following Figure 1-5This application will be 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. All the bored piles 1 are enclosed in a foundation pit excavation area. Each bored pile 1 is fixedly provided with a corbel 2. The legs 2 are provided with profiled steels 3, and a support assembly 4 is provided between the profiled steels 3 on the two opposite pit walls of the foundation pit. Press the profiled steel 3 located on the two opposite sides of the foundation pit, so that the purlin formed by the profiled steel 3 replaces the cement concrete purlin to support and protect the foundation pit, there is no curing time, and the foundation pit support structure is fast. Construction, saving construction period.

[0046] refer to f...

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Abstract

This application relates to a foundation pit excavation and support structure in a collapsible loess area and its technology, which belongs to the technical field of foundation pit excavation and support. There are multiple piles, all bored piles enclose the excavation area of ​​the foundation pit, each bored pile is fixed with a corbel, adjacent corbels are erected with shaped steel, and the shaped steel is in contact with the top surface of the corbel. At the same time, it is in contact with the outer wall of the bored pile. A positioning block is slid on the section steel. The positioning block is located on the side wall of the section steel away from the inner wall of the foundation pit. The positioning block slides along the length direction of the section steel. The positioning block is in contact with the outer wall of the bored pile. All the shaped steels are arranged for a circle along the inner wall of the foundation pit, and support components are installed between the shaped steels on the two opposite side walls of the foundation pit respectively. It has the effect of fast construction of foundation pit support structure and saving construction period.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 徐厚庆倪晗王晓魁张雅欣
Owner CHINA FIRST HIGHWAY ENG CO LTD
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