Plum-blossom-shaped cement soil mixing pile and forming method thereof

Abstract

The invention relates to a triangular plum-blossom-shaped cement soil mixing pile and a forming method thereof. The plum-blossom-shaped cement soil mixing pile is good in perpendicularity, incline resisting capability and full in full-load bearing capacity. The cement soil mixing pile comprises a cement soil mixing pile, and two end faces and a cement soil mixing pile body are formed by connection of three plum-blossom-shaped petals. The plum-blossom-shaped cement soil mixing pile has the advantages that a pile foundation distributed in multiple angles is large in bearing capacity, bearing and supporting points are triangularly distributed, and the pile foundation is good in stability; when the pile foundation formed by the plum-blossom-shaped petals is positioned in a soft soil foundation, a plurality of plum-blossom-shaped petals identical in inclined angles act on a wall of the soft soil foundation like three projected ejection posts, so that the cement soil pile is ensured not to incline but perpendicularly stand in the soft soil foundation; due to the fact that a multiple-axis drilling rod sinks along a guiding frame, stirs and sprays cement paste at the same time, and the sinking direction and the stirring direction are opposite, so that the cement paste and soil can be fully mixed integrally, and high strength of the cement soil pile is ensured.

Description

technical field [0001] The invention relates to a quincunx-shaped cement-soil mixing 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 the design depth; e: While stirri...

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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