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Foundation pit with firm structure and earthwork excavation method of foundation pit

An earthwork excavation and foundation pit technology, which is applied in excavation, infrastructure engineering, construction, etc., can solve the problems of prone to collapse and reduced safety factor, and achieve the effect of avoiding collapse, improving stability and enhancing structural strength.

Active Publication Date: 2019-06-11
温州开源建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing foundation pit is excavated, it is prone to collapse during the excavation process, resulting in a decrease in the safety factor

Method used

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  • Foundation pit with firm structure and earthwork excavation method of foundation pit
  • Foundation pit with firm structure and earthwork excavation method of foundation pit
  • Foundation pit with firm structure and earthwork excavation method of foundation pit

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] refer to figure 1 and figure 2 , is a foundation pit with firm structure disclosed by the present invention, comprising a square foundation pit body 1, a number of support piles 2 are arranged on the side wall of the foundation pit body 1, and a steel mesh arranged obliquely is connected to the inner wall of the support pile 2 3. The upper end of the reinforcement mesh 3 is connected to the upper end of the support pile 2, and the lower end of the reinforcement mesh 3 is connected to the bottom surface of the foundation pit, and the reinforcement mesh 3, the bottom surface of the foundation pit and the side wall of the foundation pit enclose a direct triangular space, The enclosed space is filled with stones 4, and reinforced beams 5 are connected between adjacent supporting piles 2; the supporting piles 2 are used as the foundation support of the foundation pit, and can play the role of supporting the skeleton to prevent soil around the foundation pit from The layer ...

Embodiment 2

[0049] refer to figure 2 and image 3 , is a method for excavating foundation pit earthwork with firm structure disclosed by the present invention, comprising the following steps: S1, surveying marking lines, surveying the geology, drawing a square contour line of the foundation pit on the ground, and dividing the contour line equally , and mark a number of split points; S2, drive the support pile 2 downward at the position of the split point through the pile driver, and the piling depth is 5-7 meters deeper than the foundation pit; S3, use the excavator to move along the support pile 2 toward the center of the foundation pit A ring-shaped prefabricated groove is dug out on the inner wall of the foundation pit, and the height of the prefabricated groove is equal to the depth of the foundation pit; S4, the reinforcement mesh 3 is installed, and the lower end of the reinforcement mesh 3 is first fixed on the ground of the prefabricated groove away from the support pile 2 throug...

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Abstract

The invention discloses a foundation pit with a firm structure and an earthwork excavation method of the foundation pit, and relates to the technical field of building construction. The problem that the structure of a traditional foundation pit is not firm is solved. According to the technical scheme of the foundation pit with the firm structure and the earthwork excavation method of the foundation pit, the foundation pit with the firm structure comprises a foundation pit body, support piles and bar-mat reinforcement, wherein the support piles are distributed on the side wall of the foundationpit body in an annulus mode, the bar-mat reinforcement is connected to the inner walls of the support piles and arranged in an inclined mode, the upper end of the bar-mat reinforcement is connected to the inner walls of the support piles, the lower end of the bar-mat reinforcement is connected to the ground, a side wall formed by the bar-mat reinforcement and the support piles is filled with stone blocks, and strengthening beams are connected between the adjacent support piles. The technical scheme of the foundation pit with the firm structure and the earthwork excavation method of the foundation pit have the advantages that excavation is convenient, and the structure is firm.

Description

technical field [0001] The invention relates to the technical field of building foundation pits, in particular to a foundation pit with firm structure and an earth excavation method thereof. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base elevation and foundation plane size. Before excavation, the excavation plan should be determined according to the geological and hydrological data and the conditions of the buildings on site, and the waterproof and drainage work should be done well. If the excavation is not deep, you can use the method of setting the side slope to stabilize the soil slope. The slope size is determined according to the relevant engineering regulations; Large-scale foundation pits even adopt methods such as underground diaphragm wall and column-type bored pile interlocking. [0003] When the existing foundation pit is excavated, the problem of collapse is prone to occur during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02E02D17/04
Inventor 孙翔胡明杰张宏伟董彩云
Owner 温州开源建设集团有限公司
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