Long spiral drilling and pressure grouting concrete pile and construction method and device thereof
A technology of long auger drilling and pouring concrete, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of limited bearing capacity, high cost, and difficult maintenance of pile foundations, and achieve increased bearing capacity, low cost, The effect of simple equipment
Pending Publication Date: 2022-02-08
刘录怀
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Problems solved by technology
[0006] The purpose of the present invention is to address the above problems, to provide a long helical drilled press-grown concrete pile and its construction method and construction device, which adopts an external high-pressure water pipe and uses high-pressure water to complete diameter expansion, which solves the problems of maintenance difficulties, high costs, Problems such as limited bearing capacity of pile foundation
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Embodiment Construction
[0026] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0027] like figure 1 As shown, the embodiment of the construction device of the middle and long helical drilled concrete piles of the present invention comprises a drill rod 1, a soil squeezer 2 and a drill bit 3 successively from top to bottom, and the drill rod 1 and the drill bit 3 are uniform hollow cylinders, and the soil squeezer 2 is a small hollow cone with a large upper part and a lower part. Continuous helical blades 4 are arranged on the outer circumference of the drill pipe 1, the soil squeezer 2 and the drill bit 3. Edge diameter, soil extruder 2 small end diameters are identical with the diameter of drill bit 3, and drill bit 3 lower end is provided with conical valve 5, and conical valve 5 is hinged with drill bit 3 lower ends.
[0028] On the outer wall of the drill pipe 1, the earth squeezer 2 and the drill bit 3, a group of high-pressu...
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The invention discloses a long spiral drilling and pressure grouting concrete pile and a construction method and device thereof, and belongs to the technical field of civil engineering. The long spiral drilling and pressure grouting concrete pile comprises a pile body and a reinforcement cage in the pile body, wherein a plurality of expanding bodies are arranged on the pile body. The invention further discloses a construction device and a construction method of the concrete pile. According to the construction device, high-pressure water pipes laid on a drill rod, a soil squeezing device and a drill bit are used for transverse diameter expansion. The invention is suitable for various pile foundation construction projects, and is particularly suitable for occasions where the pile foundation bearing capacity cannot meet the building requirements due to the limitation of the diameter and depth of mechanical hole forming.
Description
technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a long auger-drilled concrete pile and its construction method and construction device. Background technique [0002] With the continuous development and application of pile foundation construction technology, the technology of long auger drilled concrete piles has been widely promoted and applied. [0003] The traditional device for constructing long auger bored grouting piles is a drill pipe, which includes a hollow core tube and a valve. The valve is a cone-shaped body. Valve connection. The valve of cone tip body, a section of core tube at the bottom and a circle of helical blades at the bottom constitute the drill bit. When the drill bit is lowered, the valve seals the core tube, and when concrete needs to be poured, the upper end of the core tube is connected with the concrete pump, and the concrete is injected into the core tube. Under the pressure ...
Claims
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IPC IPC(8): E02D5/34E02D15/04E02D5/56E02D5/44E02D27/12
CPCE02D5/34E02D15/04E02D5/56E02D5/44E02D27/12
Inventor刘录怀
Owner刘录怀