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An auger drilled cast-in-place pile structure for cfg piles

A spiral drilling and pile-forming technology, which is applied in the direction of foundation structure engineering, drill pipe, drill pipe, etc., can solve the problems that the valve cannot be opened quickly, drilled into the groundwater layer, and affect the quality of CFG pile piles, etc.

Active Publication Date: 2022-04-19
郑州大学建设工程质量研究检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned related technologies, when the drilling tool is drilled in some areas, it will inevitably drill into the groundwater layer, so when the drilling tool is pulled out upwards and grouted into the drilled hole through the grouting hole, the groundwater will And the mud will generate an upward thrust on the valve, so that the valve cannot be opened quickly, resulting in the concrete slurry not being able to fully fill the bottom of the drilled hole, thus affecting the pile quality of the CFG pile

Method used

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  • An auger drilled cast-in-place pile structure for cfg piles
  • An auger drilled cast-in-place pile structure for cfg piles
  • An auger drilled cast-in-place pile structure for cfg piles

Examples

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Effect test

Embodiment 1

[0041] refer to figure 1 and figure 2, the auger drilled pile structure for CFG piles includes a drill rod 1, a blade 2 fixed on the drill rod 1, an end cap assembly 3 installed on the drill rod 1, and a control mechanism 4, wherein the drill rod 1 is A cylindrical long rod and a cylindrical pouring hole 11 is provided inside the drill pipe 1. The pouring hole 11 is coaxially arranged with the drill pipe 1 and both ends pass through the drill pipe 1. The pouring hole 11 is used for pouring concrete, and the blade 2 is used for breaking the soil. And transport the soil to the ground, the end cap assembly 3 is arranged on an end face of the drill rod 1, and is used to close the opening of the perfusion hole 11 on the end face of the drill rod 1, during the process of drilling the drill rod 1 downward , the end cap assembly 3 is subjected to the upward reaction force of the soil or groundwater, and can always abut against the end face of the drill pipe 1, so that the pouring ho...

Embodiment 2

[0049] refer to Figure 5 , The difference between this embodiment and Embodiment 1 is that the end cover assembly 3 only includes a mounting base 31 and a connecting assembly 33 for hinged mounting base 31 on the drill pipe 1, and the connecting assembly 33 is the same as the connecting assembly in Embodiment 1. 33; the control assembly 4 only includes a hydraulic cylinder 49 installed in the housing chamber 12, the cylinder barrel of the hydraulic cylinder 49 is fixed on the inner wall of the housing chamber 12, and the piston rod of the hydraulic cylinder 49 protrudes from the housing chamber 12 and abuts against the On the surface of the mounting seat 31 facing the drill pipe 1; in addition, a drill point 316 is fixedly arranged on the downward surface of the mounting seat 31, the drill point 316 is a tapered structure and the tip is downward, and a connecting channel 13 is also opened in the drill pipe 1 , the connecting channel 13 is a hollow structure with a cylindrical...

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Abstract

This application relates to an auger-drilled pouring pile structure for CFG piles, which belongs to the technical field of bored pile-filling equipment. The hole is provided with an opening at the end of the drill rod, and the end of the drill rod is provided with an end cap assembly; The mounting seat also includes a cover plate rotatably supported on the mounting seat. A pressure balance hole is provided on the mounting seat and a pressure balance hole is provided on the cover plate. holes, and the matching holes run through the cover plate; the drill rod is equipped with a control mechanism capable of driving the cover plate to rotate. When the drilling rod of the present application is rising, the cover can be opened quickly to allow the concrete to be sprayed out.

Description

technical field [0001] The present application relates to the technical field of bored pile filling equipment, in particular to an auger bored pile filling structure for CFG piles. Background technique [0002] CFG pile is a kind of low-strength concrete pile, which can make full use of the bearing capacity of the soil between the piles and transfer the load to the deep foundation, and has good technical performance and economic effect. During the construction of CFG piles, the pile holes are firstly drilled by drilling machines, and then concrete is poured into the holes to make piles. [0003] At present, the patent document whose authorization notification number is CN210289661U discloses a kind of drilling tool for CFG pile construction of composite foundation. Drilling section, soil dumping section, compacting section, and rotary extrusion section are provided in turn. The drilling section includes a drill bit. The drill bit includes a triangular head arranged at the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/46E02D3/12E21B4/04E21B10/42E21B17/22E21B17/04
CPCE02D5/46E02D3/126E21B4/04E21B10/42E21B17/22E21B17/04
Inventor 杜思义王素华李民生郑仪杜峥朱东博云源浩高金川付巾涛秦状陈一汉张磊
Owner 郑州大学建设工程质量研究检测有限公司