Prestressed pipe pile plugging protection device

Abstract

The utility model discloses a prestressed pipe pile plugging protection device which comprises a prestressed pipe pile body, a conical sealing head is arranged at the bottom of the prestressed pipe pile body, a plugging steel plate is arranged at the end, away from the conical sealing head, of the prestressed pipe pile body, and a sealing edge is fixedly connected to one side of the plugging steel plate. And one end of the sealing edge extends into the prestressed pipe pile body. The plugging steel plate is arranged at the pile hole in the top of the prestressed pipe pile body in a spot welding mode, the sealing performance after spot welding is improved through the sealing edge and other structures, soil, stone and other sundries cannot enter the prestressed pipe pile body in the later period, the sealing protection effect on the interior of the prestressed pipe pile body is achieved, the previous hole cleaning procedure can be omitted, and the construction cost is reduced. The construction efficiency of underground structure engineering can be improved, meanwhile, the pile hole can be protected and prevented from being polluted through the arrangement of the blocking steel plate, and therefore the quality in the hole is improved, and the quality of follow-up core grouting operation can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a prestressed pipe pile blocking and protection device. Background Art

[0002] Pile foundation construction refers to a construction method in which prestressed pipe piles are buried in the soil to form a foundation by drilling, piling or pouring in a building project. After the construction of the prestressed pipe piles is completed, the pile holes are exposed in the soil layer, and the upper soil, stones, etc. mixed with rainwater and groundwater scatter into the pile holes, blocking the pile core. After the excavation is completed, the blocked pile core needs to be manually cleaned so that concrete can be used for core pouring.

[0003] After the excavation of the existing prestressed pipe piles is completed, the pile core is often seriously blocked, the manual hole cleaning efficiency is low, and it consumes a lot of human resources. In addition, the hole cleaning quality is poor, and it is difficult to clean the mud on the hole wall. In practice, the hole cleaning quality does not meet the expected effect, which will bring certain quality risks to the subsequent construction. In order to solve the above problems, we propose a prestressed pipe pile blocking and protection device. Utility Model Content

[0004] The utility model aims to provide a prestressed pipe pile blocking and protection device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed pipe pile plugging and protection device, comprising a prestressed pipe pile body, a conical closing head is arranged at the bottom of the prestressed pipe pile body, a sealing steel plate is arranged at one end of the prestressed pipe pile body away from the conical closing head, a sealing edge is fixedly connected to one side of the sealing steel plate, and one end of the sealing edge extends to the interior of the prestressed pipe pile body.

[0006] As a further preferred embodiment of the present technical solution, two positioning holes are provided at one end of the prestressed pipe pile body close to the sealing steel plate, and two positioning rods are fixedly connected to one side of the sealing steel plate. One end of the two positioning rods respectively extends to the inside of the two positioning holes. By providing the positioning rods, the positioning and fixation of the sealing steel plate before spot welding is facilitated to avoid displacement during the spot welding process.

[0007] As a further preferred embodiment of the present technical solution, the prestressed pipe pile body and the conical closing head are connected by a weld, which is beneficial to improving the integrity between the prestressed pipe pile body and the conical closing head, so that the prestressed pipe pile body can be more conveniently inserted into the soil layer.

[0008] As a further preferred embodiment of the present technical solution, the prestressed pipe pile body and the sealing steel plate are spot-welded, which makes it convenient to remove the sealing steel plate using external removal machinery after the excavation is completed, thereby facilitating the subsequent core filling process.

[0009] As a further preferred embodiment of the present technical solution, the outer side of the conical closing head and the weld joint are coated with anti-rust paint, and the thickness of the anti-rust paint shall not be less than 260 μm. The anti-rust paint can effectively prevent the weld from rusting due to external influences, thereby improving the integrity and strength between the prestressed pipe pile body and the conical closing head.

[0010] As a further preferred embodiment of the present technical solution, the outer side of the prestressed pipe pile body is coated with an epoxy asphalt coating, and the thickness of the epoxy asphalt coating shall not be less than 500 μm. The epoxy asphalt coating can provide anti-corrosion protection, reduce friction resistance, improve bonding properties, improve waterproof function and prevent microbial erosion, thereby ensuring the use strength and service life of the prestressed pipe pile body.

[0011] The utility model provides a prestressed pipe pile blocking and protection device, which has the following beneficial effects:

[0012] (1) The utility model spot welds a sealing steel plate at the top pile hole of the prestressed pipe pile body, and utilizes a sealing edge and other structures to improve the sealing performance after spot welding, so that dirt, gravel and other debris cannot enter in the later stage, thereby playing a role of sealing and protecting the interior of the prestressed pipe pile body. In this way, the previous hole cleaning process can be omitted, which is helpful to improve the construction efficiency of underground structure engineering.

[0013] (2) The utility model protects the pile hole from being contaminated, thereby improving the quality of the hole and helping to improve the quality of subsequent core filling operations.

[0014] (3) The utility model uses a plugging steel plate that is about 5 cm larger than the maximum pile hole diameter of various commonly used pile types. After use, it can be recycled and reused through mechanical dismantling or heat treatment. Compared with the previous hole cleaning process, it does not increase the cost, thereby facilitating the construction of prestressed pipe piles.

[0015] (4) The utility model fixes two positioning rods on one side of the sealing steel plate to correspond to the positioning holes opened at the top of the prestressed pipe pile body 1, so as to facilitate the positioning and fixing of the sealing steel plate 3 during the spot welding process and prevent displacement during the spot welding process to affect the spot welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of a half-section structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the distribution structure of the epoxy asphalt coating of the utility model;

[0020] Figure 5 This is a schematic diagram of the anti-rust paint distribution structure of the utility model;

[0021] In the figure: 1. Prestressed pipe pile body; 2. Conical closing head; 3. Sealing steel plate; 4. Sealing edge; 5. Positioning rod; 6. Positioning hole; 7. Epoxy asphalt coating; 8. Anti-rust paint. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1-Figure 5 As shown, in this embodiment, a prestressed pipe pile plugging protection device includes a prestressed pipe pile body 1, a conical closing head 2 is arranged at the bottom of the prestressed pipe pile body 1, a sealing steel plate 3 is arranged at one end of the prestressed pipe pile body 1 away from the conical closing head 2, a sealing edge 4 is fixedly connected to one side of the sealing steel plate 3, one end of the sealing edge 4 extends to the interior of the prestressed pipe pile body 1, the prestressed pipe pile body 1 and the conical closing head 2 are welded, the prestressed pipe pile body 1 and the sealing steel plate 3 are spot-welded, the outer side of the conical closing head 2 and the weld connection are coated with anti-rust paint 8, the thickness of the anti-rust paint 8 shall not be less than 260μm, and the outer side of the prestressed pipe pile body 1 is coated with an epoxy asphalt coating 7, the thickness of the epoxy asphalt coating 7 shall not be less than 500μm.

[0024] During the pile foundation construction phase, the prestressed pipe pile body 1 is pressed into the soil layer with the conical closed head 2 downward by using lifting equipment and static pile driver equipment. During this period, multiple sections of the prestressed pipe pile body 1 can be spliced ​​by welding connection. The welds need to be coated with anti-rust paint 8 with a thickness of not less than 260μm. Before the last section of the prestressed pipe pile body 1 is pressed in, a circular sealing steel plate 3 is added to the top of the pile for finished product protection. By extending one end of the sealing edge 4 to the inside of the pile hole, the sealing between the sealing steel plate 3 and the prestressed pipe pile body 1 is improved, and then the sealing steel plate 3 and the prestressed pipe pile body are welded by spot welding equipment. 1 spot welding operation is performed to make the sealing steel plate 3 and the prestressed pipe pile body 1 spot welded and fixed together. After the earth excavation is completed, the sealing steel plate 3 can be opened by external mechanical removal or heat treatment to carry out the core filling process, which not only greatly saves the time of the hole cleaning process and shortens the construction period of the pile foundation, but also the removed sealing steel plate 3 can be recycled and reused in subsequent projects without cost increase. In this way, the prestressed pipe pile plugging protection device can not only effectively improve the efficiency of the pile foundation construction, but also recycle and reuse the sealing steel plate 3 to carry out the plugging work of the pile hole, thereby reducing the construction cost.

[0025] By coating the epoxy asphalt coating 7 on the outer side of the prestressed pipe pile body 1, the prestressed pipe pile body 1 can be effectively protected from corrosion, friction resistance can be reduced, bonding performance can be improved, waterproof function can be improved, and microbial erosion can be prevented.

[0026] like Figure 1-Figure 5 As shown, the prestressed pipe pile body 1 has two positioning holes 6 at one end close to the blocking steel plate 3 , and one side of the blocking steel plate 3 is fixedly connected to two positioning rods 5 , one end of the two positioning rods 5 respectively extends to the inside of the two positioning holes 6 .

[0027] By extending the positioning rod 5 into the positioning hole 6, the positioning rod 5 cooperates with the sealing edge 4 to position and fix the sealing steel plate 3 at the pile hole at the top of the prestressed pipe pile body 1, thereby facilitating the workers to spot weld it and avoiding displacement during the spot welding process, thereby improving the spot welding efficiency and facilitating the rapid progress of pile foundation construction.

[0028] The utility model provides a prestressed pipe pile plugging protection device, and the specific working principle is as follows: in the pile foundation construction stage, the prestressed pipe pile body 1 is pressed into the soil layer in a downward manner with a conical closing head 2 by using lifting equipment and static pressure pile driver equipment, and multiple sections of prestressed pipe pile bodies 1 can be spliced ​​by welding connection. The welds are all required to be coated with anti-rust paint 8 with a thickness of not less than 260μm. Before the last section of the prestressed pipe pile body 1 is pressed in, a circular plugging steel plate 3 is added to the pile top for finished product protection. By extending one end of the sealing edge 4 to the inside of the pile hole, the positioning rod 5 is extended. To the positioning hole 6, the positioning rod 5 and the sealing edge 4 cooperate to fix the blocking steel plate 3 at the pile hole at the top of the prestressed pipe pile body 1, thereby improving the sealing between the blocking steel plate 3 and the prestressed pipe pile body 1 while facilitating the positioning and fixing of the blocking steel plate 3 to prevent the blocking steel plate 3 from moving, and then use spot welding equipment to spot weld the blocking steel plate 3 and the prestressed pipe pile body 1, so that the blocking steel plate 3 and the prestressed pipe pile body 1 are spot welded and fixed together. After the excavation is completed, the blocking steel plate 3 is opened by external mechanical removal or heat treatment to carry out the core filling process.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prestressed pipe pile plugging and protection device, comprising a prestressed pipe pile body (1), characterized in that: A conical closing head (2) is arranged at the bottom of the prestressed pipe pile body (1), and a sealing steel plate (3) is arranged at one end of the prestressed pipe pile body (1) away from the conical closing head (2). A sealing edge (4) is fixedly connected to one side of the sealing steel plate (3), and one end of the sealing edge (4) extends to the interior of the prestressed pipe pile body (1).

2. A prestressed pipe pile plugging and protection device according to claim 1, characterized in that: Two positioning holes (6) are provided at one end of the prestressed pipe pile body (1) close to the blocking steel plate (3); two positioning rods (5) are fixedly connected to one side of the blocking steel plate (3); one end of the two positioning rods (5) respectively extends to the inside of the two positioning holes (6).

3. The prestressed pipe pile blocking and protection device according to claim 1 is characterized in that: The prestressed pipe pile body (1) and the conical closing head (2) are connected by a weld.

4. The prestressed pipe pile plugging and protection device according to claim 1 is characterized in that: The prestressed pipe pile body (1) and the sealing steel plate (3) are connected by spot welding.

5. The prestressed pipe pile plugging and protection device according to claim 3 is characterized in that: The outer side of the conical closing head (2) and the weld joint are coated with anti-rust paint (8), and the thickness of the anti-rust paint (8) shall not be less than 260 μm.

6. The prestressed pipe pile plugging and protection device according to claim 1 is characterized by: The outer side of the prestressed pipe pile body (1) is coated with an epoxy asphalt coating (7), and the thickness of the epoxy asphalt coating (7) shall not be less than 500 μm.

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