CN216515539U - Precession formula PC tubular pile - Google Patents
Precession formula PC tubular pile Download PDFInfo
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- CN216515539U CN216515539U CN202123306069.1U CN202123306069U CN216515539U CN 216515539 U CN216515539 U CN 216515539U CN 202123306069 U CN202123306069 U CN 202123306069U CN 216515539 U CN216515539 U CN 216515539U
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Abstract
The utility model relates to a precession type PC (polycarbonate) pipe pile, in particular to a precession type PC pipe pile for manufacturing prestressed reinforced concrete in a factory, and belongs to the field of civil engineering. A precession type PC pipe pile comprises a pile body and a rotor wing; one end of the pile body is provided with a connecting part for connecting with a mechanical precession power device, the other end of the pile body is provided with an installation part for installing an axis torsion bar socket joint connector or a pile head, the pile head is used as the end part of a tubular pile precession soil layer, and when a plurality of tubular piles are arranged, the axis torsion bar socket joint connector is used for connecting adjacent tubular piles; the rotor wing spirally surrounds the outer surface of the pile body and extends along the length direction of the pile body; the rotor and the pile body are made of concrete materials and are prefabricated and molded at one time. The utility model has the following advantages: 1. the outer wall of the tubular pile is provided with the rotor wing, so that the side resistance of the foundation pile is increased; 2. the propelling efficiency of the rotary downward is improved; 3. the screwing torque force of the upper section pile is effectively transmitted to the lower section pile; 4. reducing pile end resistance; 5. the tubular pile is of a hollow structure, so that resources are saved.
Description
Technical Field
The utility model relates to a precession type PC (polycarbonate) pipe pile, in particular to a precession type PC pipe pile for manufacturing prestressed reinforced concrete in a factory, and belongs to the field of civil engineering.
Background
The engineering pile is divided into a cast-in-place concrete pile body and an engineering precast concrete pile body according to the process. There are also two types of differentiation according to the form of pile feeding: precession and hammer or dead-load plunge. Pile body on site: usually, the screw pile is a metal long screw rod leading hole, the pressure tank is filled with concrete for forming, and the defect of the screw pile is that no spiral line exists and the spiral line disappears after the concrete is added. Prefabricating a pile body: the other is a pipe pile with smooth outer wall, which is formed in factory and vertically fed by static pressure or hammer base, and has the disadvantages of high noise and smooth side of pile which is not favorable for pulling resistance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provides a precession type PC tubular pile which does not need to lead a hole and can be used for precessing the pile in place at one time.
In order to achieve the purpose, the utility model adopts the following technical scheme: a precession type PC pipe pile comprises a pile body and a rotor wing; one end of the pile body is provided with a connecting part for connecting with a mechanical precession power device, the other end is provided with an installation part for installing an axis torsion bar socket joint or a pile head, the pile head is used as the end part of a tubular pile precession soil layer, and when the number of the tubular piles is multiple, the axis torsion bar socket joint is used for connecting adjacent tubular piles; the rotor wing spirally surrounds the outer surface of the pile body and extends along the length direction of the pile body; the rotor and the pile body concrete material are in the same body and are prefabricated and molded at one time.
Preferably, the end part of the shaft center torsion bar socket joint is of a polygonal stepped structure, and the outer diameter of the shaft center torsion bar socket joint is gradually reduced from the shaft center to the two end parts and is matched with the stepped hole in the mounting part.
Preferably, asymmetric holes are arranged at corresponding positions of the shaft center torsion bar socket joint and the mounting part, and the upper and lower sections of tubular piles are fixed through steel pins matched with the asymmetric holes.
Preferably, the surface of pile head is provided with the rotor, and the rotor is the heliciform around the pile head surface, and its length direction along the pile head extends, and with the rotor syntropy of tubular pile.
Preferably, the pile head is a precast concrete pile head; and the pile head is conical.
Preferably, the tip that the tubular pile was kept away from to the pile head is provided with the stake point, and the stake point is including location stake point and rotatory stake point, and location stake point plays the positioning action, and rotatory stake point is used for the gyration to break ground for the tubular pile cuts into the soil layer downwards.
Preferably, the positioning pile tip is positioned in the center of the pile head, and the height of the positioning pile tip is greater than that of the rotating pile tip; the rotary pile tips are two and are distributed on two sides of the positioning pile tip.
Preferably, the tubular pile is of a hollow structure, and an inner hole of the tubular pile is a polygonal cross section with a full length; the connecting part is a polygonal rod piece inserted in the inner hole of the tubular pile, one end of the connecting part is connected with the mechanical precession power device, and the other end of the connecting part is used as an installation part to be inserted into the pile head.
Preferably, the end of the pile head inserted into the mounting part is provided with a polygonal section insertion hole, and the rod piece is inserted into the polygonal section insertion hole.
Preferably, the tubular pile and the shaft center torsion bar socket joint are of solid structures, and the connecting part and the mounting part are inserted holes with polygonal cross sections; the end part of the pile head close to the installation part is inserted into the polygonal section insertion hole, an asymmetric hole is arranged at the corresponding position of the installation part and the end part of the pile head, and the tubular pile and the pile head are fixed through a steel pin matched with the asymmetric hole.
The design principle is as follows: the rotor and the tubular pile are made of concrete materials and are prefabricated and molded at one time in a factory, so that the rotor part and soil form a shearing relationship after the pile is formed, and the side resistance of the foundation pile is increased; the shaft center torsion bar socket joint with the polygonal cross section is effectively connected with an upper tubular pile and a lower tubular pile, and the screwing-in torsion of the upper section of pile is transmitted to the lower section of pile; in addition, an upper asymmetric hole and a lower asymmetric hole are formed in the shaft center torsion bar bearing and inserting head, a steel pin is driven into the asymmetric holes to fix the upper section of tubular pile and the lower section of tubular pile, and simultaneously, the pulling resistance effect is also achieved, and the pulling resistance force of the upper section of tubular pile can be conducted downwards; when the tubular pile is hollow, the rod piece can be recovered.
Compared with the prior art, the utility model has the following advantages:
1. the outer wall of the pipe pile is provided with a rotor wing, so that the rotor wing part forms a shearing relation with a soil layer after the pipe pile is formed, and the side resistance of the foundation pile is increased;
2. the pipe pile is provided with the inner inserting hole with the polygonal section, so that the shaft center torsion bar socket joint in the inserting hole forms a multi-point multi-surface torque surface, and the downward propelling efficiency of rotation is improved;
3. the shaft center torsion bar socket joint with the polygonal cross section effectively transmits the screwing-in torsion of the upper section pile to the lower section pile, plays a role in resisting pulling and can transmit the pulling resistance of the upper section pipe pile downwards;
4. the precast concrete pile head is conical, so that the rotor wing can cut into a soil layer downwards, and the pile end resistance is reduced;
5. the tubular pile is of a hollow structure, and the rod piece inserted into the tubular pile can be recycled after the tubular pile is formed, so that resources are saved.
Drawings
Fig. 1 is a view showing an initial state of a tubular pile in accordance with example 1 of the present invention;
FIG. 2 is a diagram of a pile side drag model according to embodiment 1 of the present invention;
fig. 3 is a schematic structural view of the pile cap at the end of the tubular pile and the pile joint before connection according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure of the tubular pile end part of FIG. 3 after the pile cap is connected with the pile joint and a view from B to B;
FIG. 5 is a schematic view of a pile head structure according to example 1 of the present invention;
FIG. 6 is a cross-sectional view of FIG. 5;
FIG. 7 is a schematic structural view and an A-A view in accordance with embodiment 2 of the present invention;
FIG. 8 is a state diagram of the embodiment 2 of the utility model after the tubular pile full length drill rod is recovered;
FIG. 9 is a partial sectional view of the pipe pile, through-length drill rod and pile head before installation in accordance with example 2 of the present invention;
FIG. 10 is a cross-sectional view of the installation of FIG. 9;
FIG. 11 is a schematic structural view of a tubular pile, a through-length drill rod and a pile head after installation in embodiment 2 of the utility model;
FIG. 12 is a schematic view of the pile head structure of FIG. 11;
FIG. 13 is a perspective view of FIG. 12;
in fig. 1-6, 1, a mechanical precession power plant; 2. a tubular pile; 2-1, a rotor wing; 2-2, pile body; 2-3, pile cap; 3. pile joints; 4. pile head; 4-1, positioning a pile tip; 4-2, rotating the pile tip; 4-3, rotor wing; 5. a soil layer; 6. a bolt;
in fig. 7-13, 1, a mechanical precession power plant; 2. a tubular pile; 2-1 rotor wing; 2-2, pile body; 2-3, pile end steel plates; 3. passing through a long drill rod; 4. pile head; 4-1, positioning a pile tip; 4-2, rotating the pile tip; 4-3, rotor wing; 4-4, pile head steel plate.
Detailed Description
It should be noted that, in the present embodiment, the terms "upper", "lower", and the like are described according to the drawings, and do not limit the present invention.
Example 1
The utility model is described in further detail below with reference to the accompanying figures 1-6: a precession type PC pipe pile is shown in figure 2, wherein a pipe pile 2 comprises a pile body 2-2 and a rotor wing 2-1; the rotor wing 2-1 spirally surrounds the outer wall of the pile body 2-2 and extends along the length direction of the pile body 2-2; the rotor 2-1 and the pile body 2-2 are made of concrete materials and are prefabricated and formed at one time, so that the rotor part and the soil layer form a shearing relation after the pile is formed, and the side resistance of the pipe pile is increased. One end of the pile body 2-2 is provided with a connecting part for connecting with the mechanical precession power device 1, the other end is provided with an installation part for installing a pile joint 3 or a pile head 4, and the pile head 4 is used as the end part of the tubular pile 2 which is screwed into the soil layer 5.
In the application of the screw-in PC pipe pile, in this embodiment, the pipe pile 2 is a solid structure. As shown in fig. 1, the number of the pipe piles 2 is multiple, and may not be limited to two as shown in the figure, the pile joints 3 are used for connecting adjacent pipe piles 2, and the pile heads 4 are installed at the end parts of the pipe piles 2 close to the soil layer 5.
As shown in fig. 3-4, pile caps 2-3 are arranged at two ends of the tubular pile 2, the pile caps 2-3 are inner insertion holes with polygonal cross sections, and the inner insertion holes with polygonal cross sections are stepped along the length direction; the end part of the pile joint 3 is of a polygonal stepped structure, the outer diameter of the pile joint is gradually reduced from the axis to the two end parts, and the outer diameter of the pile joint is matched with an inner inserting hole in the polygonal section; when the pile connector 3 is inserted into the polygonal section inserting hole, the boss of the pile cap 2-3 can limit the pile connector 3 to further move along the length direction of the tubular pile; in order to effectively connect the upper and lower sections of tubular piles, two pairs of asymmetric semicircular holes are respectively arranged at the corresponding positions of the pile connector 3 and the pile bearing head 2-3, when the semicircular holes of the pile connector 3 and the pile bearing head 2-3 are butted, a circular hole is formed, and the upper and lower sections of tubular piles 2 are fixed through a bolt 6 inserted into the circular hole.
As shown in fig. 5-6, the outer surface of the pile head 4 is also provided with a rotor 4-3 made of reinforced concrete material, and the rotor spirally surrounds the outer wall of the pile head 4, extends along the length direction of the pile head, and is in the same direction as the rotor 2-1 of the tubular pile 2. In order to reduce the resistance of the pile end, the ratio of the top surface to the bottom surface of the rotor wing of the pile head 4 is smaller than the ratio of the top surface to the bottom surface of the rotor wing 2-1 of the tubular pile; and the maximum outer diameter of the pile head is not less than the maximum outer diameter of the tubular pile 2. The end part far away from the tubular pile 2 is provided with a pile tip, the pile tip comprises a positioning pile tip 4-1 and a rotating pile tip 4-2, the positioning pile tip 4-1 plays a positioning role, and the rotating pile tip 4-2 is used for rotating and breaking soil, so that the tubular pile cuts into a soil layer downwards.
As a preferable scheme of the embodiment, the positioning pile tip 4-1 is positioned at the center of the pile head 4, and the height of the positioning pile tip is greater than that of the rotating pile tip 4-2; the number of the rotary pile tips 4-2 is two, and the rotary pile tips are distributed on two sides of the positioning pile tip 4-1.
Example 2
In this embodiment, the tube pile 2 has a hollow structure, and the number of the tube piles is one.
The utility model is described in further detail below with reference to figures 7-13: a precession type PC tubular pile, tubular pile 2 is a hollow structure, including pile body 2-2 and rotor 2-1 (can see embodiment 1 figure 2); the rotor wing 2-1 spirally surrounds the outer wall of the pile body 2-2 and extends along the length direction of the pile body 2-2; the rotor 2-1 and the pile body 2-2 are made of concrete materials and are prefabricated and formed at one time, so that the rotor part and a soil layer form a shearing relation after the pile is formed, and the side resistance of the pipe pile is increased; the inner hole of the tubular pile 2 is a polygonal section with a full length.
The application of the precession type PC tubular pile is that as shown in figures 8-11, a through-length drill rod 3 is inserted along the axis of a tubular pile 2, the cross section of the through-length drill rod 3 is polygonal, and the shape of the cross section of the through-length drill rod is the same as that of the inner hole of the tubular pile; in the present embodiment, one end of the through drill rod 3 is connected to the mechanical precession power unit 1 as a connection portion, and the other end is inserted into the pile head 4 as an installation portion.
As shown in fig. 10, a pile end steel plate 2-3 is fixed at one end of the tubular pile 2 close to the pile head 4, and a through hole consistent with the inner hole of the tubular pile 2 is formed in the axis of the pile end steel plate 2-3; a pile head steel plate 4-4 is fixed at one end of the pile head 4 close to the tubular pile 2, a blind hole with the same outer diameter as the through-length drill rod 3 is arranged at the axis of the pile head steel plate 4-4, and the end part of the through-length drill rod 3 is inserted into the blind hole; the pile end steel plate 2-3 is welded with the pile end steel plate 4-4, so that the tubular pile 2 and the pile head 4 are connected and fixed.
As shown in fig. 12-13, the outer surface of the pile head 4 is also provided with a rotor 4-3 made of reinforced concrete material, and the rotor spirally surrounds the outer wall of the pile head 4, extends along the length direction of the pile head, and is in the same direction as the rotor 2-1 of the tubular pile 2. In order to reduce the resistance of the pile end, the ratio of the top surface to the bottom surface of the rotor wing of the pile head 4 is smaller than the ratio of the top surface to the bottom surface of the rotor wing 2-1 of the tubular pile; and the maximum outer diameter of the pile head is not less than the maximum outer diameter of the tubular pile 2. One end of the pile head 4, which is far away from the tubular pile 2, is provided with a pile tip, the pile tip comprises a positioning pile tip 4-1 and a rotating pile tip 4-2, the positioning pile tip 4-1 plays a positioning role, and the rotating pile tip 4-2 is used for rotating and breaking soil, so that the tubular pile cuts into a soil layer downwards, and the resistance of the pile tip is reduced.
As a preferable scheme of the embodiment, the positioning pile tip 4-1 is positioned at the center of the pile head 4, and the height of the positioning pile tip is greater than that of the rotating pile tip 4-2; the number of the rotary pile tips 4-2 is two, and the rotary pile tips are distributed on two sides of the positioning pile tip 4-1.
In the embodiment, the through long drill rod 3 can be recycled after the pile is formed, so that resources are saved.
The above examples are merely preferred embodiments of the present invention and are not to be construed as limiting the utility model. When the tubular pile is of a hollow structure, the tubular pile and the full-length drill rod are not limited to one in embodiment 2, and a plurality of the tubular pile and the full-length drill rod can be connected and fixed as required, so long as the full-length drill rod can be recycled after the tubular pile is formed. Any extensions, modifications, etc. of ordinary skill in the art without departing from the principles of the present invention should be considered within the scope of the present invention.
Claims (10)
1. The utility model provides a precession formula PC tubular pile which characterized in that: the tubular pile comprises a pile body and a rotor wing; one end of the pile body is provided with a connecting part for connecting with a mechanical precession power device, the other end of the pile body is provided with an installation part for installing an axis torsion bar socket joint connector or a pile head, the pile head is used as the end part of a tubular pile precession soil layer, and when a plurality of tubular piles are arranged, the axis torsion bar socket joint connector is used for connecting adjacent tubular piles; the rotor wing spirally surrounds the outer surface of the pile body and extends along the length direction of the pile body; the spiral wing and the pile body concrete material are in the same body and are prefabricated and molded at one time.
2. The precession type PC pipe pile of claim 1, wherein: the end part of the shaft center torsion bar socket joint is of a polygonal stepped structure, the outer diameter of the shaft center torsion bar socket joint is gradually reduced from the shaft center to the two end parts, and the shaft center torsion bar socket joint is matched with the stepped hole in the installation part.
3. The precession type PC pipe pile of claim 2, wherein: asymmetric holes are arranged at the corresponding positions of the shaft center torsion bar socket joint and the mounting part, and the upper and lower sections of tubular piles are fixed through steel pins matched with the asymmetric holes.
4. The precession type PC pipe pile of claim 1, wherein: the surface of pile head is provided with the rotor, and the rotor is the heliciform around pile head surface, and its length direction along the pile head extends, and with the rotor syntropy of tubular pile.
5. The precession type PC pipe pile of claim 1, wherein: the pile head is a precast concrete pile head; and the pile head is conical.
6. The precession type PC pipe pile of claim 1, wherein: the tip that the tubular pile was kept away from to the pile head is provided with the stake point, and the stake point is pointed including location stake point and rotatory stake, and location stake point plays the positioning action, and rotatory stake point is used for the gyration to break ground for the tubular pile cuts into the soil layer downwards.
7. The precession type PC tube pile of claim 6, wherein: the positioning pile tip is positioned in the center of the pile head, and the height of the positioning pile tip is greater than that of the rotating pile tip; the rotary pile tips are two and are distributed on two sides of the positioning pile tip.
8. The precession PC tube stake of any one of claims 1-7, wherein: the tubular pile is of a hollow structure, and an inner hole of the tubular pile is a polygonal cross section with a through length; the connecting part is a polygonal rod piece inserted in the inner hole of the tubular pile, one end of the connecting part is connected with the mechanical precession power device, and the other end of the connecting part is used as an installation part to be inserted into the pile head.
9. The precession type PC pipe pile of claim 8, wherein: the end part of the pile head inserted into the installation part is provided with a polygonal section inner inserting hole, and the rod piece is inserted into the polygonal section inner inserting hole.
10. The precession PC tube stake of any one of claims 1-7, wherein: the tubular pile and the axis torsion bar socket joint are of solid structures, and the connecting part and the mounting part are inserted holes with polygonal cross sections; the end part of the pile head close to the installation part is inserted into the polygonal section interpolation hole, an asymmetric hole is arranged at the corresponding position of the installation part and the end part of the pile head, and the tubular pile and the pile head are fixed through a steel pin adaptive to the asymmetric hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123306069.1U CN216515539U (en) | 2021-12-27 | 2021-12-27 | Precession formula PC tubular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123306069.1U CN216515539U (en) | 2021-12-27 | 2021-12-27 | Precession formula PC tubular pile |
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| Publication Number | Publication Date |
|---|---|
| CN216515539U true CN216515539U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123306069.1U Active CN216515539U (en) | 2021-12-27 | 2021-12-27 | Precession formula PC tubular pile |
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|---|---|
| CN (1) | CN216515539U (en) |
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2021
- 2021-12-27 CN CN202123306069.1U patent/CN216515539U/en active Active
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