CN219315704U

CN219315704U - Precast concrete pile with mixed reinforcement

Info

Publication number: CN219315704U
Application number: CN202320704981.2U
Authority: CN
Inventors: 张耀文; 郭冬冬; 李龙
Original assignee: Guangdong Sanhe Pile Co Ltd
Current assignee: Guangdong Sanhe Pile Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-07-07
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a precast concrete pile with mixed reinforcement, which comprises a pile body made of concrete, wherein prestressed reinforcement and non-prestressed reinforcement are embedded in the pile body, and at least one end of the pile body is fixed with an end plate; the non-prestressed reinforcement is connected with the end plate, one end of the non-prestressed reinforcement, which is close to the end plate, is provided with a sleeve, one end of the sleeve is connected with the end plate, the non-prestressed reinforcement is inserted into the sleeve from the other end of the sleeve, and cementing materials are filled in the sleeve. The utility model can improve the connection stability of the non-prestressed reinforcement and the end plate.

Description

Precast concrete pile with mixed reinforcement

Technical Field

The utility model relates to the technical field of concrete piles, in particular to a precast concrete pile with mixed reinforcement.

Background

Along with the rapid development of urban construction in China, the mixed reinforcement prestressed concrete pile is widely applied in the key fields of basic construction of industrial and civil buildings, municipal bridges, highways and the like due to the characteristics of high bending strength, industrial production, energy conservation, environmental protection, wide application range and the like. The mixed reinforcement prestressed concrete pile is characterized in that: the common screw thread steel is added on the basis of the prestressed reinforcement to serve as a non-prestressed reinforcement, the non-prestressed reinforcement cannot be stretched in the production process of the precast pile, the prestress is not provided, and the ductility and toughness of the prestressed pile can be further improved, so that when the pile body is subjected to a stronger bending moment, the pile body cannot be subjected to brittle failure even if cracking occurs.

The Chinese patent publication No. CN113846628A discloses a mixed reinforcement precast pile and a production method thereof, wherein non-prestressed reinforcement is connected with a pile end anchoring plate through a connecting piece, and the connecting piece comprises a connecting rod, a sleeve and a connecting cylinder; one end of the connecting rod is connected with the pile end anchoring plate, the other end of the connecting rod is axially and slidably connected with one end of the sleeve, the other end of the sleeve is connected with the end part of the non-prestressed reinforcement, the opening of the sleeve is provided with a clamping table, the non-prestressed reinforcement is limited in the sleeve through the clamping table, when the precast pile tensioning process is carried out, the elastic back-off is contacted with the clamping table, although the back-off has certain elasticity and can slightly elastically deform, the non-prestressed reinforcement still can be subjected to tensioning force generated by the elastic connection of the back-off and the clamping table, and the ductility of the pile body can be reduced. In addition, after the precast pile is formed, the non-prestressed reinforcement and the end plate are only in elastic lap joint through the sleeve and are not rigidly fixedly connected, so that the connection between the non-prestressed reinforcement and the end plate is not rigidly connected, and the pile body is poor in integrity.

Disclosure of Invention

The utility model provides a precast concrete pile with mixed reinforcement, which can improve the connection stability of non-prestressed reinforcement and an end plate.

In order to solve the problems, the utility model adopts the following technical scheme:

the embodiment of the utility model provides a precast concrete pile with mixed reinforcement, which comprises a pile body made of concrete, wherein prestressed reinforcement and non-prestressed reinforcement are embedded in the pile body, and at least one end of the pile body is fixed with an end plate; the non-prestressed reinforcement is connected with the end plate, one end of the non-prestressed reinforcement, which is close to the end plate, is provided with a sleeve, one end of the sleeve is connected with the end plate, the non-prestressed reinforcement is inserted into the sleeve from the other end of the sleeve, and cementing materials are filled in the sleeve.

In some embodiments, the inner wall of the sleeve is provided with a plurality of protrusions.

In some embodiments, the projection surrounds an inner wall of the sleeve.

In some embodiments, the protrusions are threads; alternatively, the cross section of the protrusion is triangular or circular arc.

In some embodiments, the cementitious material comprises concrete, sulphur cement, a resin material, or grouting cement.

In some embodiments, the sleeve is welded to the end plate.

In some embodiments, end plates are fixed at two ends of the pile body, and two ends of the prestressed reinforcement are respectively connected with the two end plates; the two ends of the non-prestressed reinforcement are respectively provided with the sleeves, the two sleeves are respectively connected with the two end plates, the two ends of the non-prestressed reinforcement are respectively inserted into the two sleeves, and the two sleeves are filled with cementing materials.

In some embodiments, spiral stirrups are further buried in the pile body, and the spiral stirrups are wound on the prestressed reinforcement and the non-prestressed reinforcement.

The utility model has at least the following beneficial effects: according to the utility model, the cementing material is filled in the sleeve, and before the cementing material is solidified, the non-prestressed reinforcement can move along the axial direction of the sleeve, so that the non-prestressed reinforcement cannot be subjected to a tensile force when the prestressed reinforcement is tensioned, and the toughness and the ductility of the pile body are improved; after the cementing material is solidified, the solidified cementing material can seamlessly and rigidly fasten the sleeve and the non-prestressed reinforcement together, so that the stability of the connection of the non-prestressed reinforcement and the end plate is effectively improved.

Drawings

FIG. 1 is a schematic cross-sectional view of a precast concrete pile with mixed reinforcement according to one embodiment of the present utility model;

fig. 2 is a schematic cross-sectional view of an end plate, sleeve and non-prestressed reinforcement according to one embodiment of the present utility model.

Wherein, the reference numerals are as follows:

pile body 100, prestressed reinforcement 110, non-prestressed reinforcement 120, spiral stirrup 130;

end plate 200, sleeve 300, protrusions 310, cement 400.

Detailed Description

The disclosure provides a thorough understanding of various embodiments of the disclosure as defined by the claims and their equivalents, with reference to the following description of the drawings. The description includes various specific details to aid in understanding, but these details should be regarded as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of the functions and constructions of the disclosed embodiments may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to literal meanings, but are only used by the inventors to enable a clear and consistent understanding of the disclosure. Thus, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present disclosure are provided for illustration only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.

The terms "having," "can have," "including," or "can include" as used in various embodiments of the present disclosure indicate the presence of a corresponding function, operation, element or the like disclosed, but are not limited to additional one or more functions, operations, elements or the like. Furthermore, it should be understood that the terms "comprises" or "comprising," when used in various embodiments of the present disclosure, are intended to specify the presence of stated features, integers, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, or groups thereof.

It will be understood that when an element (e.g., a first element) is "connected" to another element (e.g., a second element), the element can be directly connected to the other element, or there can be an intervening element (e.g., a third element) between the element and the other element.

The embodiment of the utility model provides a precast concrete pile with mixed reinforcement, as shown in fig. 1 and 2, which comprises a pile body 100 made of concrete, wherein prestressed reinforcement 110 and non-prestressed reinforcement 120 are embedded in the pile body 100, a plurality of prestressed reinforcement 110 and non-prestressed reinforcement 120 are arranged, and the prestressed reinforcement 110 and the non-prestressed reinforcement 120 can extend along the length direction of the pile body 100. An end plate 200 is fixed on at least one end surface of the pile body 100 in the length direction, the prestressed reinforcement 110 is connected with the end plate 200, specifically, an anchoring hole can be formed on the end plate 200, the end part of the prestressed reinforcement 110 extends out of the pile body 100 and can form an upsetting head, and the upsetting head is clamped and fixed in the anchoring hole.

The non-prestressed reinforcement 120 is provided with a sleeve 300 near one end of the end plate 200, one end of the sleeve 300 is connected with the end plate 200, the non-prestressed reinforcement 120 is inserted into the sleeve 300 from the other end of the sleeve 300, and the sleeve 300 is filled with a cementing material 400. The non-prestressed reinforcement 120 may move in the axial direction of the sleeve 300 before the cement 400 is set, and thus, the non-prestressed reinforcement 120 is not subjected to a tensile force when the prestressed reinforcement 110 is tensioned. After the cement 400 is solidified, the solidified cement 400 may fasten the sleeve 300 and the non-prestressed reinforcement 120 together, which effectively improves the stability of the connection of the non-prestressed reinforcement 120 with the end plate 200. The integrity of the whole precast concrete pile is ensured, and the shearing resistance and the bending resistance of the pile end of the single pile and the pile connecting positions of the two piles can be kept relatively consistent with the middle part of the pile body.

In some embodiments, the inner wall of sleeve 300 is provided with a plurality of protrusions 310, which corresponds to increasing the contact area of cement 400 with the inner wall of sleeve 300, while increasing the resistance to cement 400 moving axially out of sleeve 300 along sleeve 300, so that cement 400 can further secure sleeve 300 and non-prestressed reinforcement 120 together.

Further, the protrusions 310 surround the inner wall of the sleeve 300, which may have a ring shape or a spiral shape, which may further increase the contact area of the cement 400 with the inner wall of the sleeve 300, and the bonding force of the cement 400 with the sleeve 300 is relatively uniform throughout the circumference of the inner wall of the sleeve 300.

Further, the protrusion 310 may be a thread, extending helically within the sleeve 300; alternatively, the protrusion 310 has a circular ring shape, and the cross-sectional shape of the protrusion 310 is a triangle or a circular arc shape, which makes the inner diameter of the sleeve 300 different in size.

In some embodiments, the cementitious material 400 includes, but is not limited to, concrete, sulphur cement, resin material, and grouting cement, which have fluidity before being set, and thus do not affect the movement of the non-prestressed reinforcement 120 along the sleeve 300 during tensioning. The above materials may be injected into the sleeve 300 before the pile body 100 is formed by the mold, wherein the concrete material may be injected into the sleeve 300 in advance, or a portion of the concrete for forming the pile body 100 may be filled into the sleeve 300 due to a compaction by vibration or a centrifugal forming process during the process of forming the pile body 100 by the mold.

In some embodiments, sleeve 300 is welded to end plate 200, the welding process is easier to operate and the connection of sleeve 300 to end plate 200 is more secure than other securing means.

In some embodiments, the pile body 100 is fixed with end plates 200 at both ends, and the prestressed reinforcement 110 is connected with two end plates 200 at both ends, respectively. The two ends of the non-prestressed reinforcement 120 are respectively provided with a sleeve 300, the two sleeves 300 are respectively connected with the two end plates 200, the two ends of the non-prestressed reinforcement 120 are respectively inserted into the two sleeves 300, and the two sleeves 300 are filled with the cementing material 400. Thus, the end plates 200, the sleeve 300 and the non-prestressed reinforcement 120 at both ends of the pile body 100 are all connected together to form a series-connected whole, the integrity of the precast concrete pile is greatly improved, and the shearing resistance and the bending resistance are also greatly enhanced.

In some embodiments, the pile body 100 further has embedded therein spiral stirrups 130, the spiral stirrups 130 being wrapped around the pre-stressed rebars 110 and the non-pre-stressed rebars 120 to form a reinforcement cage.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the utility model.

Claims

1. The utility model provides a mix precast concrete stake of arrangement of reinforcement which characterized in that: the pile comprises a pile body made of concrete, wherein prestressed steel bars and non-prestressed steel bars are embedded in the pile body, and at least one end of the pile body is fixed with an end plate; the non-prestressed reinforcement is connected with the end plate, one end of the non-prestressed reinforcement, which is close to the end plate, is provided with a sleeve, one end of the sleeve is connected with the end plate, the non-prestressed reinforcement is inserted into the sleeve from the other end of the sleeve, and cementing materials are filled in the sleeve.

2. The hybrid reinforced precast concrete pile of claim 1, wherein: the inner wall of the sleeve is provided with a plurality of bulges.

3. The hybrid reinforced precast concrete pile of claim 2, wherein: the projection surrounds the inner wall of the sleeve.

4. A precast concrete pile of mixed reinforcement according to claim 3, characterized in that: the protrusions are threads; alternatively, the cross section of the protrusion is triangular or circular arc.

5. The hybrid reinforced precast concrete pile of claim 1, wherein: the cementing material comprises concrete, sulfur cement, a resin material or grouting cement.

6. The hybrid reinforced precast concrete pile of claim 1, wherein: the sleeve is welded and fixed with the end plate.

7. A precast concrete pile with mixed reinforcement according to any one of claims 1 to 6, characterized in that: end plates are fixed at two ends of the pile body, and two ends of the prestressed reinforcement are respectively connected with the two end plates; the two ends of the non-prestressed reinforcement are respectively provided with the sleeves, the two sleeves are respectively connected with the two end plates, the two ends of the non-prestressed reinforcement are respectively inserted into the two sleeves, and the two sleeves are filled with cementing materials.

8. A precast concrete pile with mixed reinforcement according to any one of claims 1 to 6, characterized in that: spiral stirrups are buried in the pile body, and the spiral stirrups are wound on the prestressed reinforcement and the non-prestressed reinforcement.