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Pile forming method for filling pile of compact-making hole and its drill rod

A cast-in-situ pile and hole-forming technology, which is applied to earthwork drilling, drilling equipment and methods, sheet pile walls, etc., to achieve the effects of saving earthwork transportation costs, increasing frictional resistance, and improving the bearing capacity of single piles

Inactive Publication Date: 2007-07-11
万军
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  • Claims
  • Application Information

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Problems solved by technology

These pile foundation construction methods have their own advantages and disadvantages, and the advantages and disadvantages are obvious.

Method used

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  • Pile forming method for filling pile of compact-making hole and its drill rod
  • Pile forming method for filling pile of compact-making hole and its drill rod
  • Pile forming method for filling pile of compact-making hole and its drill rod

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Experimental program
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Effect test

Embodiment

[0029] Embodiment: The pile-forming method of the soil-squeezing hole-forming cast-in-place pile that this embodiment provides comprises the following steps:

[0030] A casing 1 is arranged at the opening, and the inner diameter of the casing 1 is larger than the pile diameter (as shown in Figure 1);

[0031] (2) Rotate, feed, and extrude to a specified depth with a hollow extruded hole-forming drill pipe, and rotate twice without pressurization to compact a small amount of empty soil at the bottom (as shown in Figure 2 shown);

[0032] (3) While rotating and lifting the drill pipe 2, the pile material is poured through the hollow drill pipe 2 at the same time (as shown in Figure 3). The loading capacity shall be controlled up to the design elevation.

[0033] (4) drill pipe 2 is put out of aperture (as shown in Figure 4);

[0034] (5) Insert reinforcement cage 3 to the elevation (as shown in Figure 5) in the poured pile-forming material;

[0035] (6) Use the conduit for s...

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Abstract

The invention discloses a pile construction for soil compaction pore-forming pouring pile, comprising following procedures that (1) hollow extrusion pore-forming drill rod rotates, feeds and extrudes to the setting depth at the same time; (2) the drill rod rotates and arises at the same time, and pile formation material is jetted into the hollow drill rod; (3) the drill rod is lifted to the port; (4) steel reinforcement cage is set into the jetted pile formation material to the level. The drill rod in pile formation method comprises drill bit connected with inner drill rod; outer drill rod mated out of the inner drill rod, which is connected with drill bit reelingly; slurry discharge hole is set on outer wall of drill bit; non-return valve plate is set on the outer cover of slurry discharge hole, of which the upper end is fixed with drill bit by pin connection on the radial direction. The invention extrudes the soil to form hole and it can not be out of soil. Not only there is no pollution but also large transporting cost for soil can be saved.

Description

technical field [0001] The invention relates to a method for forming a pile by squeezing soil to form a hole and a drilling rod thereof. Background technique [0002] At present, the construction types of commonly used piles at home and abroad can be divided into three categories: non-squeezed soil piles, partially squeezed soil piles and soil-squeezed piles. Each of these pile foundation construction methods has advantages and disadvantages, and the advantages and disadvantages are obvious. The obvious disadvantages of non-squeeze piles are: soil discharge, mud pollution, and low load resistance of single piles; its advantages are: small vibration, low noise, simple equipment, convenient construction, and short construction period. The obvious disadvantages of squeezed soil piles are: large vibration, high noise, difficulty in forming piles in sand layers with N>30, large equipment, and high cost; the advantages are: easy control of construction quality, high bearing ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34E21B7/00E02D5/38
Inventor 万军
Owner 万军
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