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CFG pile composite foundation construction technology

A technology of composite foundation and construction technology, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of low construction efficiency and achieve the effects of accelerating construction efficiency, high supporting strength, and increasing strength

Active Publication Date: 2021-09-21
中能建西北城市建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In view of the related technologies mentioned above, the inventor has repeatedly repeated the location of the positioning piles in the actual construction, and the construction efficiency is low.

Method used

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  • CFG pile composite foundation construction technology
  • CFG pile composite foundation construction technology

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Experimental program
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Embodiment Construction

[0052] The present application is described in further detail below.

[0053] A kind of CFG pile composite foundation construction technique, comprises the steps:

[0054] Step 1: Excavate the site. Excavate the site to a point 1.2m above the design elevation of the pile top, level and compact it.

[0055] Step 2: Pile point positioning: Determine the position of the positioning pile, according to the pile position, spacing, and vertical beam designed in the foundation treatment diagram, guide and place the pile point of each pile from the two determined axis control points, and use the pile The point positioning tool drills and pours lime into the hole to mark the position of the pile point. After marking the pile point with white ash, a positioning rod for aligning the drill pipe is inserted into the white ash. The positioning rod in this embodiment can be selected from bamboo. chopsticks.

[0056] Step 3: Drilling operation is carried out with a drilling rig. Mark 20m, 21...

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Abstract

This application relates to a CFG pile composite foundation construction process, which includes the steps of site excavation, pile point placement, drilling operation, pouring into piles and pile top composite treatment, wherein the pile point placement includes determining the position of the positioning pile, Drill a hole with a pile point positioning tool and pour lime into the hole to mark the pile point position. This application has the effect of improving the situation that directly spreading lime on the soil layer is easy to be washed away by rainwater or the marked pile point cannot be found after cleaning the soil above the marked pile point, and the construction efficiency is greatly accelerated.

Description

technical field [0001] The present application relates to the field of foundation engineering, in particular to a CFG pile composite foundation construction technology. Background technique [0002] CFG pile is the abbreviation of cement fly ash gravel pile, and its composite foundation is composed of three parts: pile, soil between piles and cushion layer. The mechanism of stress is that the cushion layer is deformed by the upper foundation load and distributes the load to the soil between the pile foundation piles in a certain proportion, so that the two bear the force together. At the same time, the soil is compacted by the piles to increase the bearing capacity, and the piles improve the mechanical performance due to the increase of the lateral stress of the surrounding soil. The two work together to form a composite foundation as a whole, which jointly bears the upper foundation. incoming load. [0003] The existing CFG pile composite foundation includes the following...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D13/06E02D3/12E02D5/46
CPCE02D3/12E02D5/46E02D13/06
Inventor 叶根龙杨栋秦松鹤陈波吴涛陈晨王云赵凤华曲江鹏孙斯超蔡金锁
Owner 中能建西北城市建设有限公司
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