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A foundation pit support structure and construction method

A technology of foundation pit support and construction method, which is applied in basic structure engineering, excavation, construction, etc., can solve problems such as unsafety, anchor bar detachment, etc., and achieve the effect of high support capacity

Active Publication Date: 2019-12-17
GUANGZHOU HUALEI BUILDING FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the muddy soil or clay with high water content in the above-mentioned prior art, because the soil is relatively soft, the anchor bar is easy to detach from the slope of the foundation pit, and this method is relatively unsafe

Method used

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  • A foundation pit support structure and construction method
  • A foundation pit support structure and construction method

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Experimental program
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Effect test

Embodiment 1

[0046] This embodiment provides a foundation pit support structure, the foundation pit support structure includes a slope protection unit 100 arranged on the inner wall of the foundation pit, and at least Two groups of anchoring units 200, and several load-bearing units 300 connected to the slope protection unit 100 and the anchoring unit 200 in turn; each group of anchoring units 200 is a ring structure arranged around the foundation pit, and multiple groups of anchoring units 200 are arranged at intervals to form A number of annular rings surrounding the foundation pit;

[0047]The slope protection unit 100 includes a soil nail wall 101 attached to the inner wall of the foundation pit, the anchor unit 200 includes a poured concrete structure arranged in the soil body along the vertical direction, and the bearing unit 300 includes a bearing unit 301 for bearing tensile stress And a pressure bearing unit 302 for bearing compressive stress.

[0048] The principle of the presen...

Embodiment 2

[0054] This embodiment provides a construction method of a foundation pit support structure in Embodiment 1, see figure 1 and figure 2 , the method includes the following steps:

[0055] S100. Excavate anchor pits, and excavate at least two sets of anchor pits sequentially along the foundation pit to the direction away from the foundation pit; the distance between the anchor pits depends on the fluidity of the soil. Generally, the soil flows The greater the resistance, the greater the distance between the anchoring pits, and the greater the number of anchoring pits, the larger the area surrounded by the outermost anchoring pits as a whole.

[0056] S200, setting the load-bearing unit 300, drilling horizontally arranged accommodating holes for piercing the pressure-bearing unit 302 and the tension-bearing unit 301 respectively along the foundation pit to the direction away from the foundation pit, for piercing the pressure-bearing unit 302 The aperture of the accommodating h...

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Abstract

The invention discloses a foundation pit supporting and protecting structure and a construction method. The problems that in the prior art, for sludge soil or clay or the like high in water content, because the soil is soft, anchoring bars can easily disengage from the interior of a foundation pit side slope, and the method is relatively not safe are solved. According to the technical scheme o thefoundation pit supporting and protecting structure, the foundation pit supporting and protecting structure is characterized by comprising a protecting slope unit arranged on the inner side wall of afoundation pit, at least two sets of anchoring units arranged in the foundation pit side slope and sequentially arranged in the direction from the foundation pit to the position away from the foundation pit, and a plurality of force bearing units sequentially connected with the protecting slope unit and the anchoring units; the protecting slope unit comprises a soil nailing wall attached to the inner side wall of the foundation pit; each anchoring unit comprises a casting type concrete structure arranged in a soil body in the vertical direction; and each force bearing unit comprises a pullingbearing unit used for bearing pulling stress and a pressure bearing unit used for bearing pressure stress. The beneficial effect that high supporting and protecting capacity is still achieved for thesludge soil or the clay high in water content is achieved.

Description

technical field [0001] The invention relates to the technical field of building construction, more specifically, it relates to a foundation pit support structure and a construction method. Background technique [0002] There are many forms of foundation pit support, and the support form should be selected according to the surrounding environment and geological conditions of the project during the construction process. [0003] For example, the Chinese invention patent with the publication number CN102587389A discloses a composite soil-nailed wall structure combined with micro piles, including the slope of the foundation pit. , the surface concrete layer has a built-in soil nail wall reinforcement mesh, and the side wall of the foundation pit slope is also provided with a number of anchor bars extending into the foundation pit slope; the inside of the foundation pit slope is vertically provided with micro-steel pipe piles. [0004] In the above-mentioned prior art, for muddy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E02D5/76E02D19/18
CPCE02D5/76E02D17/04E02D19/18
Inventor 陈孝轩廖辉辉赵学文王伟伟刘君远郭慧亮熊伟谢君璇陈德毅
Owner GUANGZHOU HUALEI BUILDING FOUND ENG
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