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Spiral soil squeezing recompaction cast-in-place concrete pile, pile forming drill bit and construction method

A concrete pile and concrete technology, which is applied in the directions of drill bit, earthwork drilling, sheet pile wall, etc., can solve the problems of affecting the bearing capacity of the pile and increasing the construction cost of the pile foundation.

Pending Publication Date: 2020-04-14
刘守进 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the construction of pile foundations with uneven compressibility of rock and soil layers within the pile depth range, the rock and soil around the pile with high compressibility will not be further compacted, which will affect the further improvement of the pile bearing capacity and increase the bearing capacity of the pile. Larger construction costs for pile foundations

Method used

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  • Spiral soil squeezing recompaction cast-in-place concrete pile, pile forming drill bit and construction method
  • Spiral soil squeezing recompaction cast-in-place concrete pile, pile forming drill bit and construction method
  • Spiral soil squeezing recompaction cast-in-place concrete pile, pile forming drill bit and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1 Spiral extruded soil re-extruded compacted concrete cast-in-place pile with drill bit (unscrewable spring type)

[0053] (1) The structure is as follows:

[0054] Such as Figure 1-Figure 7 As shown, the drill bit (unscrewable spring type) used for pile formation of spiral compacted soil and compacted concrete pouring piles includes joint head Ⅰ1, core pipe 2, spiral blade Ⅰ3, spiral blade Ⅱ4), drill tip device, variable diameter device and control device.

[0055] Such as figure 1 As shown, the drill bit for pile formation is composed of the upper part of the drill bit and the lower part of the drill bit, and its inner cavity forms a channel for the passage of concrete.

[0056] Such as figure 1 As shown, the core tube 2 is composed of an upper end portion 2-1 of the core tube and a lower end portion 2-2 of the core tube to form an integral structure. The upper end of the core tube 2-1 is concentrically formed with the coupling head I1 and then the ou...

Embodiment 2

[0074] Example 2 Spiral extruded soil and re-extruded concrete cast-in-place pile with drill bit (unscrewable hook type)

[0075] Such as Figure 8 As shown, the drill bit (unscrewable hook type) used for pile formation of spiral compacted soil and compacted concrete pouring piles includes coupling head Ⅰ1, core pipe 2, spiral blade Ⅰ3, spiral blade Ⅱ4, drill tip device, variable diameter device and control device.

[0076] Other structures are exactly the same as in Embodiment 1, the difference is that the locking mechanism adopted is different, and the locking mechanism of this embodiment adopts a hook-type locking mechanism. The hook-type locking mechanism, such as Figure 8 As shown, the blocking plate II9-3 is provided with a hook I9-8A corresponding to the hook II9-8B arranged at the bottom of the lower end of the core tube 2-2. -8B are connected together.

[0077] Preferably, the disposable low-strength binding is an elastic rubber ring or a rope. The hook I9-8A an...

Embodiment 3

[0079] Example 3 Screw-extruded soil and re-extruded concrete cast-in-place pile with drill bit (telescopic horizontal plate type)

[0080] Such as Figure 9-Figure 11 As shown, the drill bit (telescopic horizontal plate type) used for pile formation of spiral compacted soil and compacted concrete pouring piles includes joint head Ⅰ1, core pipe 2, helical blade Ⅰ3, helical blade Ⅱ4, drill tip device, variable diameter device, control device.

[0081] Such as Figure 9 As shown, the drill bit for pile formation is composed of the upper part of the drill bit and the lower part of the drill bit, and its inner cavity forms a channel for the passage of concrete.

[0082] Such as Figure 9 As shown, the core tube 2 is composed of an upper end portion 2-1 of the core tube and a lower end portion 2-2 of the core tube to form an integral structure. The upper end of the core tube 2-1 is concentrically formed with the coupling head I1 and then the outer edge is wound with the helical...

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Abstract

The invention relates to a spiral soil squeezing recompaction cast-in-place concrete pile, a pile forming drill bit and a construction method. According to the adopted technical scheme, the spiral soil squeezing recompaction cast-in-place concrete pile comprises a primary soil squeezing pile section and a plurality of recompaction sections, the primary soil squeezing pile section is a concrete pile I, concrete piles II arranged inside the recompaction sections, the outer diameter of the concrete piles II is larger than that of the concrete pile I, the concrete piles II are wrapped by a recompaction layer formed by mixing rock soil and concrete, and the concrete pile I and the concrete piles II are of an integrated structure. The spiral soil squeezing recompaction cast-in-place concrete pile can carry out strengthened compaction on a rock soil layer with the large compressibility in the pile depth range, the pile bearing capacity is further improved, and energy conservation and emissionreduction are achieved.

Description

technical field [0001] The invention belongs to the construction field of building construction foundation piles, and in particular relates to a screw-extruded soil-compacted compacted concrete cast-in-place pile, a drill bit for forming the pile, and a construction method. Background technique [0002] In the existing building pile foundation construction, the spiral squeezed soil pressure grouting pile has strong advantages. It has the characteristics of adapting to a wide range of strata, less residual soil discharge, strong pile bearing capacity, and good environmental protection. It is more and more widely used by construction development units. recognized. However, in the construction of pile foundations with uneven compressibility of rock and soil layers within the pile depth range, the rock and soil around the pile with high compressibility will not be further compacted, which will affect the further improvement of the pile bearing capacity and increase the bearing c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34E21B10/32E21B10/43
CPCE02D5/34E21B10/32E21B10/43
Inventor 赵世范鲁爽赵越张夏枭刘守进张喜才金光男杜啸李殊睿夏日光刘帅
Owner 刘守进
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