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Spiral soil-squeezing pile hole drilling tool and construction method of cast-in-place pile

A construction method and technology for extruding soil piles, which are used in earth-moving drilling, drill pipes, drill pipes, etc., can solve the problems of difficult to remove virtual soil and slag, and the slag soil is easy to fall to the bottom of the pile, so as to achieve high overall structural strength. , The molding speed is fast, and the effect of ensuring continuity

Inactive Publication Date: 2019-06-21
安徽联开建设工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When using the traditional pile type, the drilling tools used include drill pipe and drill bit. The drill pipe is a rod that can be spliced ​​end to end or can be stretched. The drill bit is a rotary drilling bit. When measuring, it is necessary to lift the drill bit upwards to pour out the soil, and the muck generated during the process of taking soil to form a hole is easy to fall to the bottom of the pile, forming virtual soil and sediment that are difficult to remove

Method used

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  • Spiral soil-squeezing pile hole drilling tool and construction method of cast-in-place pile
  • Spiral soil-squeezing pile hole drilling tool and construction method of cast-in-place pile
  • Spiral soil-squeezing pile hole drilling tool and construction method of cast-in-place pile

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Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the present embodiment introduces a screw soil squeezing pile hole drilling tool, which includes a rotating connecting rod 2 and an auger rod 1. Driven by the driving part of the power head, the helical drill pipe 1 is detachably connected under the rotating connecting rod 2, and the axis of the rotating connecting rod 2 and the drilling pipe 1 is provided with a pouring channel 3, and the pouring channel 3 runs through the rotating connecting rod 2, and the pouring channel 3 communicates with the lowermost end of the drill pipe 1. As the connecting rod 2 is rotated to drive the drill pipe 1 to rotate, then the drill pipe 1 can be gradually moved down to perform the operation of drilling the pile hole on the ground. After the pile hole is drilled, the pouring channel 3 is used to directly pour concrete into the pile hole, and Lift the drill pipe 1 upward to ensure the internal and external pressure of the pile hole, reduce the possibility of ...

Embodiment 2

[0040] A construction method for cast-in-situ piles, comprising the following steps:

[0041] S1. Use a long-screw auger to drill holes on the ground. The drilling tools used in the long-screw auger are as in Embodiment 1.

[0042] S2. Rotate the drilling tool in the forward direction, and move the drilling tool downward, and use the auger drill rod 1 to form the pile hole at one time.

[0043] After adopting this step, the pile hole is formed by one-time drilling, and the drill pipe 1 will not be repeatedly lifted out and inserted into the pile hole. In this way, the pile hole is relatively continuous during the formation of the pile hole, and it is not easy to be damaged due to bumps and other reasons. There are more virtual soil and waste residue, and because the drill pipe 1 is an auger drill pipe, most of the soil will be squeezed out of the pile hole through the thread groove formed by the thread, and the remaining soil will be compacted in the thread groove, which is re...

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Abstract

The invention relates to a civil engineering pile body structure, especially to a spiral soil squeezing pile hole drilling tool, comprising a rotary connecting rod and a spiral drilling rod, the spiral drilling rod is coaxially connected to the lower portion of the rotary connecting rod in a threaded mode, the lower end of the drilling rod is a conical head, a pouring channel is formed in the axisof the drilling rod and the axis of the rotary connecting rod, the pouring channel penetrates through the rotary connecting rod, and the lower end of the pouring channel communicates with the conicalhead. When the type of drilling tool is used for drilling a pile hole, the rotary connecting rod is connected with a drilling machine, the rotary connecting rod is driven by the drilling machine to rotate, the spiral drill rod can be driven to rotate after the rotary connecting rod rotates, concrete can be directly poured into the pile hole through the pouring channel after the pile hole is drilled through the drill rod, and therefore concrete can be poured into the pile hole in the process of lifting the drill rod upwards.

Description

technical field [0001] The invention relates to a civil pile body structure, in particular to a construction method of a spiral soil squeezing pile hole drilling tool and a cast-in-situ pile. Background technique [0002] With the development of infrastructure, the requirements for the speed and quality of infrastructure are getting higher and higher. In the foundation construction process of the building, the first step is the pouring of the pile body. The construction steps of the conventional cast-in-situ pile are to drill the pile hole first, and inject mud during the drilling of the pile hole to form a mud retaining wall on the inner wall of the pile hole. , and then place the reinforcement cage, and finally pour concrete into the pile hole, and let it stand to form. [0003] When using the traditional pile type, the drilling tools used include drill pipe and drill bit. The drill pipe is a rod that can be spliced ​​end to end or can be stretched. The drill bit is a rot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/22E21B37/00E02D5/36
Inventor 邵兵
Owner 安徽联开建设工程有限责任公司
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