CN219508554U

CN219508554U - Pile extension structure of steel pipe pile

Info

Publication number: CN219508554U
Application number: CN202320661752.7U
Authority: CN
Inventors: 吴君雄; 谢远亮; 黎文全; 黄玉婷
Original assignee: China Coal Jiangnan Construction Development Group Co ltd
Current assignee: China Coal Jiangnan Construction Development Group Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-11
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a pile extension structure of a steel pipe pile, and relates to the building construction technology. A steel sheet comprising at least three; all the steel plates are uniformly arranged on the periphery of the joint of the two steel pipes and are tightly attached to the outer wall of the steel pipe; both ends of the steel plate extend from the joint of the two steel pipes to the tail end of the steel pipe, and the steel plate is welded with the steel pipe; and a cross-shaped reinforcing structure is fixedly arranged between two adjacent steel plates. The utility model has the advantages of convenient construction, lower manufacturing cost and strong feasibility, improves the integrity and reliability of the connection position of the steel pipe pile, and improves the safety of the steel pipe pile as a foundation pit supporting pile.

Description

Pile extension structure of steel pipe pile

Technical Field

The utility model relates to a building construction technology, in particular to a pile splicing structure of a steel pipe pile.

Background

The existing steel pipe pile has been widely used as foundation pit support because of the advantages of low cost and simple construction. Part of foundation pit supporting steel pipe piles need to be subjected to pile extension treatment, the treatment of joint stress weak positions is particularly important, the former general adoption adopts the form of steel bar welding at the upper and lower steel pipe joint positions, but steel bars with large diameters are generally screw-thread steel, so that the contact area between the steel bars and the steel pipes is small, and the quality after welding is difficult to ensure. As another example, a steel pipe pile disclosed in publication No. CN110952536a, the joint, the limiting plate, the reinforcing block, the stud ball bolt and the supporting structure form an internal and external limiting fixation for the joint of the steel pipes, so as to connect two steel pipes. However, it has the following problems:

the connecting structure of the first steel pipe pile and the steel pipe pile adopts more parts, and the cost of the connecting structure is much higher than that of the traditional steel bar welding;

secondly, in actual operation, it takes much time to install the support structure in the pipe due to the large dead weight of the steel pipe. In addition, two steel pipe junction installation connecting rods, because it is intraductal and two pipe butt joint back operations, its operation difficulty is great, and on-the-spot construction needs to spend more time, influences the progress of whole engineering.

Disclosure of Invention

The utility model aims to solve the technical problems that the quality is difficult to guarantee or the cost is high and the installation time is long after the welding of the existing steel pipe butt joint mode.

The pile extension structure of the steel pipe pile comprises at least three steel plates; all the steel plates are uniformly arranged on the periphery of the joint of the two steel pipes and are tightly attached to the outer wall of the steel pipe; both ends of the steel plate extend from the joint of the two steel pipes to the tail end of the steel pipe, and the steel plate is welded with the steel pipe; and a cross-shaped reinforcing structure is fixedly arranged between two adjacent steel plates.

The steel plate is a square plate with the thickness of at least 3 mm.

The depth of the welding seam between the steel plate and the steel pipe is at least 5mm.

And the joint of the two steel pipes is welded and connected.

The crossed reinforcing structure consists of a first reinforcing rod and a second reinforcing rod; two ends of the first reinforcing rod and two ends of the second reinforcing rod are respectively welded with two adjacent steel plates, and the first reinforcing rod and the second reinforcing rod are arranged in a crossing way; the first reinforcing rod and the second reinforcing rod are attached to the outer wall of the steel pipe and are connected with the steel pipe in a welded mode.

An upper cutting groove is formed in the upper position of the middle of the first reinforcing rod, and a lower cutting groove is formed in the lower position of the middle of the second reinforcing rod; the upper and lower slots are matched.

Advantageous effects

The utility model has the advantages that:

1. by adopting the reinforcing treatment measure of steel plate welding at the joint of the two steel pipes, the integrity and the reliability of the joint of the steel pipe piles are improved, and the safety of the steel pipe piles as foundation pit supporting piles is improved. The connecting structure is convenient to construct, low in manufacturing cost and high in feasibility.

2. Through the cross-shaped reinforcing structure welded between two adjacent steel plates, a triangle structure with good stability can be formed between the steel plates, and the reliability of the joint of the two steel pipes can be further enhanced.

Drawings

Fig. 1 is a schematic view of a front structure of a steel pipe pile according to the present utility model;

FIG. 2 is a schematic cross-sectional structure of the steel pipe of the present utility model after welding a steel plate;

fig. 3 is a schematic top view of a steel pipe pile according to the present utility model;

FIG. 4 is a schematic front view of the second reinforcing bar of the present utility model after being entirely straightened;

fig. 5 is a schematic top view of the second reinforcing rod of the present utility model after being integrally straightened.

Wherein: 1-steel pipe, 2-steel plate, 3-cross-shaped reinforcing structure, 4-first reinforcing rod, 5-second reinforcing rod, 6-weld joint, 7-end angle cutting groove and 8-undercut groove.

Detailed Description

The utility model is further described below in connection with the examples, which are not to be construed as limiting the utility model in any way, but rather as falling within the scope of the claims.

Referring to fig. 1 to 5, a pile extension structure of a steel pipe pile according to the present utility model includes four steel plates 2. The four steel plates 2 have the same size, and are square plates with the length and width of 160mm multiplied by 60mm multiplied by 4 mm. The radian of the steel plate 2 is consistent with that of the steel pipe 1, so that the steel plate 2 can be tightly attached to the outer wall of the steel pipe 1. And four steel plates 2 are uniformly arranged on the periphery of the joint of the two steel pipes 1, and both ends of the steel plates 2 extend from the joint of the two steel pipes 1 to the tail end of the steel pipe 1 and are symmetrically arranged. Steel sheet 2 and steel pipe 1 welded connection, the junction welded connection of two steel pipes 1, and adopt the mode of girth welding around between steel sheet 2 and the steel pipe 1 and between two steel pipes 1 to the route with the junction is whole welded closure, with the reliability after improving two steel pipes 1 and connecting, has improved the security that the steel pipe pile was used as foundation ditch support stake.

Furthermore, the depth of the weld 6 between the steel plate 2 and the steel pipe 1 is 5mm to ensure the welding reliability of the welded portion.

In order to further enhance the reliability of the joint of two steel pipes 1, the utility model fixedly provides a cross-shaped reinforcing structure 3 between two adjacent steel plates 2.

Specifically, the cross-shaped reinforcing structure 3 is composed of a first reinforcing bar 4 and a second reinforcing bar 5. Both ends of the first reinforcing rod 4 and the second reinforcing rod 5 are respectively provided with an end angle cutting groove 7 matched with the thickness of the steel plate 2. When welding the reinforcing bars, the corner cut 7 is first aligned with the steel plates 2, and then the reinforcing bars are placed between the two steel plates 2 such that the corner portions of the steel plates 2 are located in the corresponding corner cut 7. After the reinforcing rod is placed, the first reinforcing rod 4 and the second reinforcing rod 5 are attached to the outer wall of the steel pipe 1, and the phenomenon that the reinforcing rod is spread due to the fact that impurities are easily embedded in gaps between the reinforcing rod and the steel pipe 1 can be effectively prevented. The reinforcing rod is welded to the steel plate 2, and the contact position of the reinforcing rod and the steel pipe 1 is fixed by welding. The welding of the reinforcing rod and the steel plate 2 and the welding of the joint of the reinforcing rod and the steel pipe 1 are also welded by adopting a girth welding mode. In the embodiment, two reinforcing rods which are arranged in a crossing way are adopted, so that a triangle structure with good stability can be formed between the steel plates 2, and the function of further reinforcing the joint of the two steel pipes 1 is achieved.

In addition, in order to ensure that the two reinforcing rods can be effectively attached to the steel pipe after crossing, an upper cutting groove is formed in the upper middle position of the first reinforcing rod 4, and a lower cutting groove 8 is formed in the lower middle position of the second reinforcing rod 5. The upper and lower slots 8 match each other and the depth of the slots is half the thickness of the reinforcing bars. When the two reinforcing rods are crossed, the upper cutting groove and the lower cutting groove are in butt joint, so that the radian of one side of the crossed reinforcing rod, which is close to the steel pipe 1, is consistent with the radian of the outer wall of the steel pipe 1.

The working principle of the utility model is as follows: after the two steel pipes 1 are butted, firstly, the joint of the two steel pipes 1 is fully welded, and then the welded joint is polished and leveled according to the outer wall surface of the steel pipe 1. Four steel plates 2 are then welded in sequence to the junction of the two steel pipes 1. After the steel plates 2 are welded, the first reinforcing rod 4 is welded between the two steel plates 2. Finally, the second reinforcing rod 5 and the first reinforcing rod 4 are placed in a crossing mode, and then welded firmly according to requirements.

While only the preferred embodiments of the present utility model have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these do not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims

1. A pile extension structure of a steel pipe pile, characterized by comprising at least three steel plates (2); all the steel plates (2) are uniformly arranged on the periphery of the joint of the two steel pipes (1) and are tightly attached to the outer wall of the steel pipe (1); both ends of the steel plate (2) extend from the joint of the two steel pipes (1) to the tail end of the steel pipe (1), and the steel plate (2) is welded with the steel pipe (1); and a cross-shaped reinforcing structure (3) is fixedly arranged between two adjacent steel plates (2).

2. Pile extension structure of steel pipe piles according to claim 1, characterised in that the steel plates (2) are square plates with a thickness of at least 3 mm.

3. Pile extension structure of a steel pipe pile according to claim 1, characterized in that the depth of the weld (6) between the steel plate (2) and the steel pipe (1) is at least 5mm.

4. Pile extension structure of a steel pipe pile according to claim 1, characterized in that the junction of two steel pipes (1) is welded.

5. Pile extension structure of steel pipe pile according to claim 1, characterized in that the cross-shaped reinforcement structure (3) consists of a first reinforcement bar (4) and a second reinforcement bar (5); two ends of the first reinforcing rod (4) and the second reinforcing rod (5) are respectively welded with two adjacent steel plates (2), and the first reinforcing rod (4) and the second reinforcing rod (5) are arranged in a crossing manner; the first reinforcing rod (4) and the second reinforcing rod (5) are attached to the outer wall of the steel pipe (1) and are connected with the steel pipe (1) in a welding mode.

6. The pile extension structure of the steel pipe pile according to claim 5, wherein an upper cutting groove is formed in the upper middle position of the first reinforcing rod (4), and a lower cutting groove (8) is formed in the lower middle position of the second reinforcing rod (5); the upper cutting groove is matched with the lower cutting groove (8).