A hollow pile

Abstract

The utility model relates to the field of hollow piles, and specifically discloses a hollow pile, including a pile body, a hollow groove is provided at the center of the pile body, a prestressed steel bar is installed on the outside of the hollow groove and located inside the pile body, non-prestressed steel bars are provided at intervals between the prestressed steel bars, stirrups are sleeved on the outside of the prestressed steel bars and the non-prestressed steel bars, an anti-slip thread is provided on the inner wall of the hollow groove, and a pile body groove is provided on the side surface of the pile body. The provision of the anti-slip thread can effectively improve the pull-out bearing capacity of the pile body and the foundation connection structure, can reduce the length of the core filling inside the hollow groove to a certain extent, and will not cause the core filling inside to be pulled out and fall off, and when the pile body is arranged as a whole inside the foundation, the pile body grooves of the array increase the contact friction with the foundation, and prevent the pile body from settling and falling off under tension.

Description

Technical Field

[0001] The utility model relates to the field of hollow piles, in particular to a hollow pile. Background Art

[0002] Prestressed square piles are hollow cylindrical slender concrete prefabricated components made by prestressed technology and centrifugal forming. They are mainly composed of a square pile body, an end plate and a steel sleeve. The China Patent Network has published the authorization announcement number of "Hollow Piles for Civil Engineering and Construction" (CN203411973 U). The hollow piles for civil engineering and construction of the utility model utilize the middle plate made of nylon inside the column and the pile pipe on the middle plate, which greatly improves the strength and arch force of the hollow piles. The hollow piles for civil engineering and construction have a simple structure, reliable strength and strong practicality.

[0003] However, the hollow piles in the above application have a smooth body and lack good friction when being laid out, and do not have good adhesion after being laid out and installed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a hollow pile to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: a hollow pile comprises a pile body, a hollow groove is provided at the center of the pile body, prestressed steel bars are installed on the outside of the hollow groove and located inside the pile body, non-prestressed steel bars are provided at intervals between the prestressed steel bars, stirrups are sleeved on the outsides of the prestressed steel bars and the non-prestressed steel bars, anti-slip threads are installed on the inner side wall of the hollow groove, and a pile body groove is provided on the side surface of the pile body.

[0006] As a further solution of the utility model: the pile body is provided with side grooves on both sides away from the pile body groove, and end plates are provided at both ends of the pile body.

[0007] As a further solution of the utility model: the interior of the hollow groove is filled with a concrete core, and a threaded steel cage is arranged inside the concrete core.

[0008] As a further solution of the utility model: the anti-slip thread is fixedly arranged on the inner wall of the hollow groove.

[0009] As a further solution of the utility model: the end plates are fixedly installed at both ends of the pile body.

[0010] As a further solution of the utility model: the prestressed steel bars and the non-prestressed steel bars are both fixedly arranged inside the pile body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The setting of anti-slip thread can effectively improve the pull-out bearing capacity of the connection structure between the pile body and the cap, and can reduce the length of the filling core inside the hollow groove to a certain extent, and will not cause the internal filling core to fall off due to pull-out.

[0013] 2. After the pile body is arranged as a whole inside the foundation, the pile body grooves of the array increase the contact friction with the foundation to prevent the pile body from settling and falling off due to tension.

[0014] 3. The end plates set on both sides of the pile body can effectively limit the development of surface cracks on the pile body end, enhance the crack resistance of the concrete at the pile body end, and increase the bearing capacity of the connection between the core filling inside the hollow groove and the pile body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a hollow pile;

[0016] Figure 2 This is a diagram of the internal structure of a hollow pile.

[0017] Figure 3 It is a partial cross-sectional view of a hollow pile.

[0018] In the figure: 1. Pile body; 2. Side groove; 3. End plate; 4. Hollow groove; 5. Prestressed steel bar; 6. Non-prestressed steel bar; 7. Pile body groove; 8. Stirrups; 401. Anti-slip thread. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-3As shown, the present embodiment provides a hollow pile, comprising a pile body 1, a hollow groove 4 is provided at the center of the pile body 1, the interior of the hollow groove 4 is filled with a concrete core, a threaded steel cage is provided inside the concrete core, the outer side of the hollow groove 4 is located inside the pile body 1 and prestressed steel bars 5 are installed, non-prestressed steel bars 6 are provided at intervals between the prestressed steel bars 5, the prestressed steel bars 5 and the non-prestressed steel bars 6 are fixedly arranged inside the pile body 1, the outer sides of the prestressed steel bars 5 and the non-prestressed steel bars 6 are sleeved with stirrups 8, an inner side wall of the hollow groove 4 is provided with an anti-slip thread 401, and the anti-slip thread 401 is fixedly arranged on the inner side wall of the hollow groove 4, a pile body groove 7 is provided on the side surface of the pile body 1, side grooves 2 are provided on both sides of the pile body 1 away from the pile body groove 7, and end plates 3 are provided at both ends of the pile body 1, and the end plates 3 are fixedly installed at both ends of the pile body 1.

[0021] The working principle of the utility model is as follows: by opening a pile body groove 7 on the outer side of the pile body 1, after the pile body 1 is arranged as a whole inside the foundation, the pile body groove 7 of the array increases the contact friction with the foundation to prevent the pile body 1 from settling and falling off due to tension, an anti-skid thread 401 is arranged on the inner side wall of the hollow groove 4, and when the concrete core is filled into the hollow groove 4, the concrete core will contact the anti-skid thread 401, and the friction with the concrete core is increased under the action of the anti-skid thread 401, so when the pile body 1 as a whole receives a pulling force, the internal core will not be pulled off, and the setting of the anti-skid thread 401 can effectively improve the pull-out bearing capacity of the connection structure between the pile body 1 and the foundation, and can reduce the length of the core inside the hollow groove 4 to a certain extent. At the same time, the end plates 3 arranged on both sides of the pile body 1 can effectively limit the development of cracks on the end surface of the pile body 1, enhance the crack resistance of the concrete at the end of the pile body 1, and increase the connection bearing capacity between the core inside the hollow groove 4 and the pile body 1.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0023] 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 hollow pile, comprising a pile body (1), characterized in that: A hollow groove (4) is provided at the center of the pile body (1); prestressed steel bars (5) are installed on the outside of the hollow groove (4) and inside the pile body (1); non-prestressed steel bars (6) are provided at intervals between the prestressed steel bars (5); stirrups (8) are sleeved on the outsides of the prestressed steel bars (5) and the non-prestressed steel bars (6); an anti-slip thread (401) is installed on the inner side wall of the hollow groove (4); and a pile body groove (7) is provided on the side surface of the pile body (1).

2. A hollow pile according to claim 1, characterized in that: The pile body (1) is provided with side grooves (2) on both sides away from the pile body groove (7), and both ends of the pile body (1) are provided with end plates (3).

3. A hollow pile according to claim 1, characterized in that: The interior of the hollow groove (4) is filled with a concrete core, and a threaded steel bar cage is arranged inside the concrete core.

4. A hollow pile according to claim 1, characterized in that: The anti-slip thread (401) is fixedly arranged on the inner side wall of the hollow groove (4).

5. A hollow pile according to claim 2, characterized in that: The end plates (3) are fixedly mounted on both ends of the pile body (1).

6. A hollow pile according to claim 1, characterized in that: The prestressed steel bars (5) and the non-prestressed steel bars (6) are both fixedly arranged inside the pile body (1).

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