PHC type perforated pipe pile for deep soft foundation treatment

Abstract

The utility model discloses a PHC type perforated pipe pile for deep soft foundation treatment, and belongs to the technical field of PHC type pipe piles, a pipe pile body comprises a concrete pipe body, a reinforcement cage is fixedly connected in the concrete pipe body, the reinforcement cage is formed by welding longitudinal reinforcements and annular reinforcements, the surface of the reinforcement cage is fixedly connected with a reinforcing mechanism, and the reinforcing mechanism is fixedly connected with the inner side of the concrete pipe body. According to the PHC type perforated pipe pile for deep soft foundation treatment, through the arranged reinforcing arms, the connection firmness of the profile steel body and the steel reinforcement cage can be improved, meanwhile, a pile body hole can be reserved, and the pile body can be firmly connected with the steel reinforcement cage through the reinforcing arms; the pipe pile does not need to be punched after being demolded, the production efficiency is greatly improved, the arranged reinforcing arms are made of metal, the strength of the pipe pile can be improved, the strength of the pipe pile cannot be reduced through the reserved pile body hole, and meanwhile the pile body hole is high in abrasion resistance and extrusion resistance.

Description

Technical Field

[0001] This utility model relates to the field of PHC type pipe pile technology, and more specifically, to a PHC type perforated pipe pile for deep soft soil treatment. Background Technology

[0002] During construction, PHC type pipe piles are used to treat deep soft soil foundations. PHC type pipe piles are short for prestressed high-strength concrete pipe piles, which are hollow cylindrical precast concrete components made through a special process.

[0003] Currently, commonly used PHC composite pipe piles are drilled after demolding to increase the air permeability and water permeability of the pipe pile. However, this reduces production efficiency and also reduces the strength of the pipe pile. For example, a PHC steel-concrete composite foundation pile disclosed in publication number CN217537033U includes a PHC pipe pile, steel profile, and concrete. The PHC pipe pile has a central cavity in the middle, the concrete is placed in the cavity, and the steel profile is placed in the central cavity and laid along the extension direction.

[0004] As can be seen from the above-mentioned publicly available scheme, the connection strength between the steel and the concrete may be insufficient. Moreover, when it is necessary to increase the air permeability and water permeability of the pipe pile, it is necessary to drill holes in the pile body after the pipe pile is demolded, which increases the production process and reduces the production efficiency of the pipe pile. At the same time, drilling holes on the surface of the pipe pile will reduce the strength of the pipe pile, and the wear resistance and extrusion resistance of the drilled concrete pile body holes may not be high. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a PHC-type perforated pipe pile for deep soft soil treatment. This PHC-type perforated pipe pile for deep soft soil treatment not only increases the connection between the steel body and the reinforcing cage through the setting of the reinforcing arm, but also allows for the pre-reservation of the pile body hole, so that the pipe pile does not need to be drilled after demolding, which greatly improves the production efficiency. Moreover, the setting of the reinforcing arm is made of metal, which not only improves the strength of the pipe pile, but also the pre-reserved pile body hole does not reduce the strength of the pipe pile. At the same time, the pile body hole has high wear resistance and extrusion resistance.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A PHC-type perforated pipe pile for deep soft soil treatment includes a pipe pile body comprising a concrete pipe body. A reinforcing cage is fixedly connected inside the concrete pipe body. The reinforcing cage is welded from longitudinal and annular reinforcing bars. A reinforcing mechanism is fixedly connected to the surface of the reinforcing cage. A steel section body is provided at one end of the reinforcing mechanism. A central hole is provided at the center of the steel section body. A pile head is fixedly connected to one end of the concrete pipe body. A through hole is pre-drilled at the center of the pile head. The inner wall of the through hole is movably connected to the surface of the steel section body. This PHC-type perforated pipe pile for deep soft soil treatment, through the reinforcing arm, not only increases the connection strength between the steel section body and the reinforcing cage, but also allows for the pre-drilling of the pile body hole, eliminating the need for drilling after demolding, greatly improving production efficiency. Furthermore, the reinforcing arm is made of metal, which not only increases the strength of the pipe pile, but also ensures that the pre-drilled pile body hole does not reduce the strength of the pipe pile. The pile body hole also exhibits high wear and extrusion resistance.

[0008] Furthermore, the strengthening mechanism includes several reinforcing arms, one end of which is fixedly sleeved to the surface of the steel body. The reinforcing arms are made of metal, and one end of each reinforcing arm has a pre-set pile hole. After the reinforcing arms are fixedly welded to the reinforcing cage, the connection between the steel body and the concrete pipe body can be strengthened, thereby increasing the strength of the pipe pile.

[0009] Furthermore, the surface of the pile head is provided with countersunk grooves, which are distributed in a ring at equal intervals with the through hole as the center. The inner wall of the countersunk grooves is provided with internal threads. The countersunk grooves can be fastened to the end cap of the pipe pile mold by means of screws, which facilitates the sealing and mold closing of the mold end face.

[0010] Furthermore, the bottom of the countersunk groove has a butt hole, the inner wall of which is slidably connected to the surface of the longitudinal reinforcing bar. One end of the longitudinal reinforcing bar is provided with a screw. The butt hole can limit the spacing between the longitudinal reinforcing bars and improve the production quality of the pipe pile.

[0011] Furthermore, a nut is threaded onto the surface of the screw, and the bottom of the nut is movably connected to the bottom of the countersunk groove. The thickness of the nut is less than the depth of the countersunk groove. The screw is fastened to the pile head by the nut, which facilitates the positioning of the pile head.

[0012] Furthermore, the pile hole is funnel-shaped, with one end connected to the central hole. The pile hole is a metal hole, which not only increases the air permeability and water permeability of the pipe pile, but also has high wear resistance and compression resistance.

[0013] Furthermore, a limiting block is fixedly connected to the bottom of the steel body, and the bottom of the limiting block is movably connected to the surface of the reinforcing arm. The limiting block has a limiting function, so that the pile head and the end face of the steel body are on the same plane.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) The reinforcing arm in this scheme can not only increase the connection between the steel body and the steel cage, but also reserve the pile hole, so that the pipe pile does not need to be drilled after demolding, which greatly improves the production efficiency.

[0016] (2) The reinforcing arm set in this scheme is made of metal, which can not only improve the strength of the pipe pile, but also ensure that the reserved pile hole will not reduce the strength of the pipe pile. At the same time, the pile hole has high wear resistance and extrusion resistance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the reinforcing cage and the steel body of this utility model;

[0019] Figure 3 for Figure 2 A cross-sectional view of the reinforcing arm structure;

[0020] Figure 4 This is a schematic diagram of the pile head structure of this utility model;

[0021] Figure 5 for Figure 4 A cross-sectional view of the pile head structure.

[0022] Explanation of the labels in the diagram:

[0023] 1. Pipe pile body; 2. Concrete pipe body; 3. Reinforcing cage; 31. Longitudinal reinforcement; 32. Ring reinforcement; 4. Steel body; 41. Central hole; 42. Reinforcing arm; 43. Pile body hole; 5. Pile head; 51. Through hole; 52. Limiting block; 53. Butt joint hole; 54. Countersunk groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1-5A PHC-type perforated pipe pile for deep soft soil treatment includes a pipe pile body 1. The shape and dimensions of the pipe pile body 1 are existing technologies and will not be described in detail here. The pipe pile body 1 includes a concrete pipe body 2, which is cast from concrete. A reinforcing cage 3 is fixedly connected inside the concrete pipe body 2. The reinforcing cage 3 is welded from longitudinal reinforcing bars 31 and annular reinforcing bars 32. A reinforcing mechanism is fixedly connected to the surface of the reinforcing cage 3. The reinforcing mechanism includes several reinforcing arms 42. One end of the reinforcing arm 42 is fixedly sleeved to the surface of the steel body 4. The reinforcing arms 42 are made of metal. One end of the reinforcing arm 42 has a pre-set pile hole 43. The shape of the hole 43 is trumpet-shaped. One end of the pile body hole 43 is connected to the central hole 41. The pile body hole 43 is a metal hole, which can not only increase the air permeability and water permeability of the pipe pile, but also has high wear resistance and extrusion resistance. After the reinforcing arm 42 is fixedly welded to the steel cage 3, it can increase the connection between the steel body 4 and the concrete pipe body 2, thereby increasing the strength of the pipe pile. One end of the reinforcing mechanism is provided with the steel body 4. The center hole 41 is provided at the center of the steel body 4. One end of the concrete pipe body 2 is fixedly connected to the pile head 5. A through hole 51 is reserved in the middle of the pile head 5. The inner wall of the through hole 51 is movably connected to the surface of the steel body 4.

[0027] The surface of the pile head 5 has countersunk grooves 54, which are distributed in a ring at equal intervals with the through hole 51 as the center. The inner wall of the countersunk grooves 54 has internal threads. The countersunk grooves 54 can be fastened to the end cap of the pipe pile mold by the screw, which facilitates the sealing and closing of the mold end face. The bottom of the countersunk grooves 54 has a butt hole 53. The inner wall of the butt hole 53 is slidably connected to the surface of the longitudinal reinforcement 31. One end of the longitudinal reinforcement 31 is provided with a screw. The butt hole 53 can limit the spacing between the longitudinal reinforcements 31 and improve the production quality of the pipe pile.

[0028] The surface of the screw is connected to a nut by a thread. The bottom of the nut is movably connected to the bottom of the countersunk groove 54. The thickness of the nut is less than the depth of the countersunk groove 54. The screw is fastened to the pile head 5 by the nut, which facilitates the positioning of the pile head 5. The bottom of the steel body 4 is fixedly connected to a limiting block 52. The bottom of the limiting block 52 is movably connected to the surface of the reinforcing arm 42. The limiting block 52 has a limiting function, so that the end faces of the pile head 5 and the steel body 4 are on the same plane.

[0029] During the production of this deep soft soil treatment PHC type perforated pipe pile, the annular reinforcing bars 32 and longitudinal reinforcing bars 31 are first woven around the outside of the steel body 4, then welded together. Next, the pile head 5 is fitted onto one end of the reinforcing cage 3, allowing the threaded portion of the longitudinal reinforcing bars 31 to insert into the mating hole 53. Then, the nuts are tightened to fix the pile head 5. The welded steel body 4 with the reinforcing cage 3 is then hoisted into the pipe pile mold. The mold end face template is then tightened to the pile head 5 using threaded rods, sealing the end face of the steel body 4 and thus sealing one end of the pile hole 43. At this point, the end face of the reinforcing arm 42 and the mold... The inner wall contact compression seals the other end of the pile hole 43, preventing concrete slurry from entering. Then, concrete pouring can proceed. After the concrete pouring is completed, the mold is lifted away, and the internal concrete is allowed to solidify before demolding. The reinforcing arm 42 not only increases the connection between the steel body 4 and the reinforcing cage 3, but also allows for the pre-reserved pile hole 43, eliminating the need for drilling after demolding, greatly improving production efficiency. Furthermore, the reinforcing arm 42 is made of metal, which not only increases the strength of the pipe pile, but also ensures that the pre-reserved pile hole 43 does not reduce the strength of the pipe pile. At the same time, the pile hole 43 has high wear resistance and extrusion resistance.

[0030] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A PHC-type perforated pipe pile for deep soft soil foundation treatment, comprising a pipe pile body (1), characterized in that: The pipe pile body (1) includes a concrete pipe body (2), and a steel cage (3) is fixedly connected inside the concrete pipe body (2). The steel cage (3) is welded from longitudinal steel bars (31) and ring steel bars (32). A reinforcing mechanism is fixedly connected to the surface of the steel cage (3). A steel body (4) is provided at one end of the reinforcing mechanism. A central hole (41) is provided at the center of the steel body (4). A pile head (5) is fixedly connected to one end of the concrete pipe body (2). A through hole (51) is reserved in the middle of the pile head (5). The inner wall of the through hole (51) is movably connected to the surface of the steel body (4).

2. The PHC-type perforated pipe pile for deep soft soil foundation treatment according to claim 1, characterized in that: The strengthening mechanism includes several strengthening arms (42), one end of which is fixedly sleeved to the surface of the steel body (4). The strengthening arms (42) are made of metal, and one end of the strengthening arms (42) is pre-set with a pile hole (43).

3. The PHC-type perforated pipe pile for deep soft soil foundation treatment according to claim 1, characterized in that: The surface of the pile head (5) has a countersunk groove (54), which is distributed in a ring with equal spacing around the through hole (51). The inner wall of the countersunk groove (54) has an internal thread.

4. The PHC-type perforated pipe pile for deep soft soil foundation treatment according to claim 3, characterized in that: The bottom of the countersunk groove (54) has a butt hole (53), the inner wall of the butt hole (53) is slidably connected to the surface of the longitudinal steel bar (31), and one end of the longitudinal steel bar (31) is provided with a screw.

5. The PHC-type perforated pipe pile for deep soft soil foundation treatment according to claim 4, characterized in that: The surface of the screw is connected to a nut by a thread, and the bottom of the nut is movably connected to the bottom of the countersunk groove (54). The thickness of the nut is less than the depth of the countersunk groove (54).

6. The PHC-type perforated pipe pile for deep soft soil foundation treatment according to claim 2, characterized in that: The pile hole (43) is trumpet-shaped, and one end of the pile hole (43) is connected to the central hole (41).

7. The PHC-type perforated pipe pile for deep soft soil foundation treatment according to claim 2, characterized in that: A limiting block (52) is fixedly connected to the bottom of the steel body (4), and the bottom of the limiting block (52) is movably connected to the surface of the reinforcing arm (42).

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