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Cement fly-ash gravel (CFG) pile composite foundation construction process

A composite foundation and construction technology technology, which is applied in basic structure engineering, sheet pile wall, soil protection and other directions, can solve problems such as low construction efficiency, and achieve the effect of speeding up construction efficiency, high support strength, and increasing strength

Active Publication Date: 2020-09-29
中能建西北城市建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Cement fly-ash gravel (CFG) pile composite foundation construction process
  • Cement fly-ash gravel (CFG) pile composite foundation construction process

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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

The invention relates to a cement fly-ash gravel (CFG) pile composite foundation construction process. The process comprises the steps of site excavation; pile point marking; drilling operation; pouring pile forming; and pile top composite treatment, wherein the step of pile point marking comprises the sub-steps that the position of a pile is determined and positioned; and drilling is performed bymeans of a pile point positioning tool, and white ash is poured into a drilled hole so as to mark the pile point position. The CFG pile composite foundation construction process provided by the invention has the effects that the situation that white ash is directly paved and spread on a soil layer and is prone to being washed away by rainwater or a marked pile point fails to be found after soil above a marked pile point is removed, and the pile point position needs to be re-positioned is improved, and the construction efficiency is greatly improved.

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 Applications(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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