Method of constructing enlarged based composite foundation for stirring concrete filling pile

A technology of composite foundation and construction device, which is applied in basic structure engineering, sheet pile wall, earthwork drilling and mining, etc., can solve the problems of low pile bearing capacity, troublesome construction, poor ability to adapt to complex geological conditions, etc.

Inactive Publication Date: 2005-03-30
翟向滨
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the auger-drilled cast-in-place pile technology widely used at present, such as dry auger-drilled cast-in-place piles, drilled grouted piles, superfluid piles, CFG piles, pressed mortar piles, etc., the bottom of the piles generally cannot make full use of the soil. End bearing capacity
In order to solve this problem, many people are studying the composite foundation technology at the bottom of the...

Method used

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  • Method of constructing enlarged based composite foundation for stirring concrete filling pile

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specific Embodiment approach 1

[0005] Specific embodiment one: (referring to Fig. 1-Fig. 2) the construction method of the bottom expansion mixing composite foundation of the present embodiment is: when the drilling tool is drilled to the design depth, the mixing head on the side of the lower end of the drilling tool is stretched out and is driven by the drilling tool The grouting hole at the bottom sprays cement slurry or cement mortar to the bottom of the hole, and the drilling tool is lifted up while rotating, and the soil scraped off after the bottom of the hole is enlarged by the mixing head is stirred and mixed evenly with the cement slurry or cement mortar to form a bottom expansion mixing compound For the foundation, when the drilling tool is lifted to the design height (that is, the design thickness of the composite foundation), the mixing head is retracted into the drilling tool, and the bottom expansion and mixing composite foundation is obtained. The construction device for bottom expansion and m...

specific Embodiment approach 2

[0006] Specific embodiment two: (see Fig. 2) the difference between this embodiment and the bottom expanding and stirring composite foundation device in specific embodiment one is that a telescopic stirring head is added on the drill pipe 1 on the other side of the telescopic stirring head 11 11. Two telescopic mixing heads 11 are fixed on both sides of the drill pipe 1 in parallel. Other components and connections are the same as those of the bottom expansion and mixing composite foundation construction device in the first embodiment.

[0007] The invention can normally carry out pile type constructions such as grouting piles, superfluid piles, CFG piles, and mortar-pressing piles through the grouting hole at the bottom center of the drill pipe on the bottom-expanding and stirring composite foundation. If it is a pile type poured after the hole is completed, such as mud wall expansion, manual digging, etc., put the construction device into the formed hole, and extend the mixi...

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Abstract

The invention discloses a kind of construction method and its device of composite base of concrete filling pile enlarged base disturbing. It relates to the production method and the construction and device of the base. In the invention, the drilling tool is lifting with its circumrotation. The mixing head disturb the earth and cement slurry or cement mortar which comes from the spreading of the bottom hole and form composite base of concrete filling pile enlarged base disturbing. The slurry muzzle interconnected with the slurry channels is set under the drill pipe; the flex mixing head is set on the side of drill pipe. The construction method in the invention has advantages of easy construction technique, quick construction speed, and strong adaptability to the complex geology and many times increasing the under stress of individual pile. The construction device in the invention has advantages of easy structure, good disturbing effect, and no big noise and no pollution to the stratum and environment.

Description

Technical field: [0001] The invention relates to a construction method of concrete pouring pile bottom expansion and mixing composite foundation and construction equipment for bottom expansion and stirring composite foundation. Background technique: [0002] In the auger-drilled cast-in-place pile technology widely used at present, such as dry auger-drilled cast-in-place piles, drilled grouted piles, superfluid piles, CFG piles, pressed mortar piles, etc., the bottom of the piles generally cannot make full use of the soil. end bearing capacity. In order to solve this problem, many people are studying the composite foundation technology at the bottom of the pile, but most of these technologies adopt adding cushions at the bottom of the pile, such as gravel cushions, fiber cushions, etc., and compacting the pile bottom soil or The disadvantages of the above technologies are troublesome construction, high construction cost, poor ability to adapt to complex geological condition...

Claims

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Application Information

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IPC IPC(8): E02D5/44E21B11/00
Inventor 翟向滨
Owner 翟向滨
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