Quincunx cement soil mixing high-strength bearing pile and forming method

Abstract

The invention relates to a quincunx cement soil mixing high-strength bearing pile and a forming method. The quincunx cement soil mixing high-strength bearing pile is good in perpendicularity and inclination-resisting capability and has the full-load bearing capacity. The quincunx cement soil mixing high-strength bearing pile comprises a cement soil mixing pile. The two end faces and the pile body of the cement soil mixing pile are formed by connecting a plurality of quincunx petals together. One or more concrete cement piles are arranged in the pile body of the quincunx cement soil mixing high-strength bearing pile. The quincunx cement soil mixing high-strength bearing pile has the advantages that firstly, due to the fact that the bearing area of a pile foundation of the multiangular-distribution quincunx cement soil pile is large, and bearing supporting points are distributed in a quincunx mode, the stability of the pile foundation is good; secondly, when the pile body composed of the multiangular quincunx petals is in a soft soil foundation, the pile body which is composed of the quincunx petals with equal included angles acts on the wall of the soft soil foundation like a three-column protruding jack column, and it can be ensured that the cement soil pile does not incline and is perpendicularly erected in the soft soil foundation; thirdly, due to the fact that a drill bit of a multi-axis drill pipe sinks while stirring and guniting along a guide frame, and the direction of sinking is opposite to the direction of stirring, cement paste and soil can be fully and evenly integrated, and it can be ensured that the strength of the pile body of the formed cement soil pile is high.

Description

technical field [0001] The invention relates to a plum-blossom-shaped cement-soil mixing high-strength load-bearing pile with good verticality, good tilt resistance and full load bearing capacity and a forming method, belonging to the field of cement bored pile manufacturing. Background technique [0002] CN1632233 A. Name "Pile forming operation method of two-way mixing pile", a: leveling the site; b: positioning of the two-way mixing pile machine: the crane suspends the mixer to the designated pile position and aligns it; c: stirring and sinking: start the two-way mixing Pile driver, make the two-way mixing pile driver drill pipe cut soil down along the guide frame, turn on the slurry pump, spray cement slurry to the soil, and the forward and reverse rotating blades on the two-way mixing pile driver drill pipe rotate simultaneously to stir the cement soil; d: The drill pipe of the two-way mixing pile driver continues to sink and stir the cement and soil until it reaches th...

AI Technical Summary

Problems solved by technology

Its weak point: the one, the pile that background technology forms is still single-column cement-soil pile, and the single-column cement-soil pile that is in the soft soil foundation is because the area of ​​pile foundation is small, and the soil quality around the pile is thin and soft, and the vertical support force is not enough to support the single-column cement-soil pile. The column cement-soil pile remains vertical, so it is very easy to cause the formed single-column cement-soil pile to tilt and be scrapped; second, because the cement slurry and soil in the single-column cement-soil pile are stirred in the same direction, it is impossible to make the cement slurry and soil The mixing between them cannot be uniform, which will inevitably lead to the low strength of the formed single-column cement-soil pile.

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