Prestressed concrete pipe pile and manufacturing method

Abstract

The invention relates to the technical field of pipe piles, in particular to a prestressed concrete pipe pile and a manufacturing method.The prestressed concrete pipe pile comprises a prestressed concrete pipe pile body, a plurality of embedded steel bars are inserted into the surface of the prestressed concrete pipe pile body, the two ends of the prestressed concrete pipe pile body are each sleeved with a metal retaining ring, and the embedded steel bars penetrate through the metal retaining rings; splicing grooves are formed in the surfaces of the metal retaining rings, the number of the prestressed concrete pipe pile bodies is two, and after the two prestressed concrete pipe pile bodies are stacked, two plug plates are inserted into the two splicing grooves between the metal retaining rings at the ends of the two prestressed concrete pipe pile bodies; the prestressed concrete pipe pile has the advantages that the metal retaining rings are arranged at the two ends of the prestressed concrete pipe pile body in a sleeving mode, collision damage to the ends of the pipe pile in the transportation, stacking and construction process is effectively prevented, and the overall structural strength and the bearing capacity of the pipe pile are improved. And the metal retaining rings are tightly matched with the pipe pile body, so that the durability and the stability of the protection effect are ensured.

Description

Technical Field

[0001] The invention relates to the field of pipe piles, in particular to a prestressed concrete pipe pile and a manufacturing method thereof. Background Art

[0002] In the field of construction engineering, prestressed concrete pipe piles are widely used in various types of infrastructure as an efficient and economical pile foundation material. However, the ends of traditional prestressed concrete pipe piles are easily bumped and damaged during transportation, stacking and construction, which not only affects the aesthetics of the pipe piles, but more importantly reduces their structural strength and bearing capacity. In addition, when multiple prestressed concrete pipe piles need to be stacked to save space or for continuous construction, how to ensure a stable connection between the pipe piles to prevent collapse or damage caused by improper stacking has always been a technical problem in the industry.

[0003] In order to solve the above problems, various improvement schemes have emerged in the prior art. For example, by adding protective sleeves or reinforcing ribs to the ends of the pipe piles to enhance the impact resistance of the ends, but these methods often have problems such as complex installation, high cost or limited protection effect. At the same time, welding, bolt connection and other methods are usually used for the connection and fixation of the pipe piles after stacking, but these methods may have disadvantages such as insufficient connection strength, low construction efficiency or difficult maintenance in actual application. Summary of the invention

[0004] The object of the present invention is to provide a prestressed concrete pipe pile and a manufacturing method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prestressed concrete pipe pile, comprising a prestressed concrete pipe pile body, a plurality of embedded steel bars are inserted on the surface of the prestressed concrete pipe pile body, both ends of the prestressed concrete pipe pile body are sleeved with metal buckles, the embedded steel bars pass through the metal buckles, and an assembly groove is opened on the surface of the metal buckles. The prestressed concrete pipe pile body is provided with two. After the two prestressed concrete pipe pile bodies are stacked, two plug plates are inserted in the two assembly grooves between the metal buckles at the ends of the two prestressed concrete pipe pile bodies, the plug plates are integrally formed on the inner ring surface of the hoop plate, the inner ring surface of the hoop plate is integrally formed with a clamping plate, the clamping plate is inserted on the outer ring surface of the metal buckle, and the ends of the two hoop plates are connected by anti-detachment clamps.

[0006] Preferably, both ends of the prestressed concrete pipe pile body are provided with an inner ring groove and an outer ring groove, which are respectively distributed on the inner ring surface and the outer ring surface of the prestressed concrete pipe pile body, and the metal buckle is a ring plate structure with a "U"-shaped cross-section, and the two side plates of the metal buckle are respectively inserted into the inner ring groove and the outer ring groove.

[0007] Preferably, a clamping ring 1 is integrally formed at the bottom end of the inner ring plate of the metal buckle ring, and the clamping ring 1 is inserted into a clamping groove 1. The clamping groove 1 is arranged on the surface of the inner ring groove, and the clamping groove 1 is an annular groove.

[0008] Preferably, a second clamping ring is integrally formed at the bottom end of the outer ring plate of the metal buckle ring. The second clamping ring is inserted into a second clamping groove. The second clamping groove is an annular groove and is arranged on the surface of the outer ring groove.

[0009] Preferably, the assembly groove is an annular groove, the end of the embedded steel bar is exposed in the assembly groove, and the end face of the embedded steel bar and the end face of the metal buckle are coplanar.

[0010] Preferably, the hoop plate is a semicircular ring plate, two clamping plates are provided, the two clamping plates are distributed up and down on the inner ring surface of the hoop plate, and the clamping plate is a semicircular ring plate, and the clamping groove is a circular groove. Preferably, the side groove is a circular groove, the height of the side groove is equal to the height of the hoop plate, the plug plate is a semicircular ring plate, the assembly groove is between the two clamping plates, and the end of the assembly groove is sleeved and fixed with a rubber clamping plate, and the rubber clamping plate is a semicircular ring plate with a "U"-shaped cross section.

[0011] Preferably, the anti-slip clamp includes a reserved groove, a screw, a connecting plate and a nut. Reserved grooves are provided at both ends of the hoop plate. The reserved grooves are arc-shaped grooves. A screw is fixed to the bottom surface of the reserved groove. The height of the screw is less than half the height of the reserved groove. The screw passes through a hole. The hole is provided on the surface of the connecting plate. The two ends of the connecting plate extend into the reserved grooves at the ends of the two hoop plates respectively. The height of the connecting plate is less than the height of the screw. After the end of the screw passes through the connecting plate, the nut is sleeved and threaded on the end of the screw.

[0012] A method for manufacturing a prestressed concrete pipe pile, the method comprising the following steps:

[0013] A prestressed concrete pipe pile body is manufactured, and a plurality of embedded steel bars are inserted on the surface of the prestressed concrete pipe pile body; an inner ring groove and an outer ring groove are respectively provided at both ends of the prestressed concrete pipe pile body; a metal buckle ring with a ring plate structure having a "U"-shaped cross section is manufactured, and a clamp ring 1 is integrally formed at the bottom end of the inner ring plate of the metal buckle ring, and a clamp ring 2 is integrally formed at the bottom end of the outer ring plate of the metal buckle ring; two side plates of the metal buckle ring are respectively inserted into the inner ring groove and the outer ring groove,

[0014] Insert the first clamp ring into the first clamping slot, and insert the second clamp ring into the second clamping slot;

[0015] If stacking is required, stack the two prestressed concrete pipe pile bodies, insert the plug plate into the assembly groove between the metal buckles at the ends of the two prestressed concrete pipe pile bodies, and the plug plate is realized by the hoop plate and its clamping plate;

[0016] Welding the embedded steel bars at the ends of two prestressed concrete pipe pile bodies, and welding the metal buckles at the ends of two prestressed concrete pipe pile bodies;

[0017] Push the connecting plate into the reserved grooves at the ends of the two hoop plates, align and push the connecting plate downward along the screw to the bottom surface of the reserved groove; screw the nut on the end of the screw to achieve the connection limit of the connecting plate and the screw to the two hoop plates.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The prestressed concrete pipe pile and manufacturing method proposed in the present invention, by sleeved metal buckles at both ends of the prestressed concrete pipe pile body, not only effectively prevents the end of the pipe pile from being damaged by collision during transportation, stacking and construction, but also improves the overall structural strength and bearing capacity of the pipe pile. The close fit between the metal buckle and the pipe pile body ensures the durability and stability of the protective effect. An assembly groove is provided on the surface of the metal buckle. When two pipe piles are stacked, the assembly groove provides a gap for welding, which is convenient for welding the embedded steel bars and metal buckles at the ends of the two pipe piles together, thereby realizing a stable connection after the pipe piles are stacked. This connection method is not only simple and fast, but also has high connection strength, which can effectively prevent collapse or damage caused by improper stacking. By adding hoop plates and anti-slip clamps at the connection of the metal buckles, the connection firmness between the metal buckles is further enhanced. The clamping plate on the hoop plate is inserted into the clamping groove of the metal buckle, realizing the traction effect on the metal buckle, thereby improving the tensile strength after the two metal buckles are connected. This design not only improves the overall stability of the pipe piles after stacking, but also provides a strong guarantee for safety during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of two prestressed concrete pipe pile bodies after being stacked and connected in the present invention;

[0021] Figure 2 for Figure 1 Top view of the structure;

[0022] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 5 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0025] Figure 6 This is a schematic diagram of the connection structure between the prestressed concrete pipe pile body and the metal buckle ring of the present invention;

[0026] Figure 7 This is a schematic diagram of the metal buckle structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure after two hoop plates of the present invention are connected;

[0028] Fig. 9 It is a schematic diagram of the hoop plate structure of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the prestressed concrete pipe pile body of the present invention.

[0030] In the figure: prestressed concrete pipe pile body 1, embedded reinforcement 2, inner ring groove 3, outer ring groove 4, metal buckle 5, clamp ring 1 6, clamping groove 1 7, clamp ring 2 8, clamping groove 2 9, side groove 10, clamping groove 3 11, hoop plate 12, clamping plate 13, rubber splint 14, reserved groove 15, screw 16, connecting plate 18, nut 19, plug plate 20, assembly groove 21. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figure 1-Figure 10 The present invention provides a technical solution: a prestressed concrete pipe pile, comprising a prestressed concrete pipe pile body 1, a plurality of embedded steel bars 2 are inserted on the surface of the prestressed concrete pipe pile body 1, both ends of the prestressed concrete pipe pile body 1 are sleeved with metal buckles 5, the embedded steel bars 2 pass through the metal buckles 5, both ends of the prestressed concrete pipe pile body 1 are provided with inner ring grooves 3 and outer ring grooves 4, the inner ring grooves 3 and the outer ring grooves 4 are respectively distributed on the inner ring surface and the outer ring surface of the prestressed concrete pipe pile body 1, The metal buckle ring 5 is a ring plate structure with a "U"-shaped cross-section, and the two side plates of the metal buckle ring 5 are respectively inserted into the inner ring groove 3 and the outer ring groove 4; the bottom end of the inner ring plate of the metal buckle ring 5 is integrally formed with a clamping ring 6, which is inserted into a clamping groove 7. The clamping groove 7 is arranged on the surface of the inner ring groove 3, and the clamping groove 7 is an annular groove; the bottom end of the outer ring plate of the metal buckle ring 5 is integrally formed with a clamping ring 2 8, which is inserted into a clamping groove 2 9. The clamping groove 2 9 is an annular groove, and the clamping groove 2 9 is arranged on the surface of the outer ring groove 4.

[0033] The reason why metal buckles 5 are installed at both ends of the prestressed concrete pipe pile body 1 is to protect the ends of the prestressed concrete pipe pile body 1 to prevent the ends of the prestressed concrete pipe pile body 1 from being bumped and damaged. After the metal buckles 5 are installed, when two prestressed concrete pipe pile bodies 1 are stacked, the two metal buckles 5 are welded together, thereby completing the connection and fixation of the two prestressed concrete pipe pile bodies 1 after stacking; and the clamp ring 1 6 at the inner ring of the metal buckle 5 is embedded in the inner ring surface of the prestressed concrete pipe pile body 1, and the clamp ring 2 8 at the outer ring of the metal buckle 5 is embedded in the outer ring surface of the prestressed concrete pipe pile body 1, thereby improving the connection firmness between the prestressed concrete pipe pile body 1 and the metal buckle 5.

[0034] The surface of the metal buckle 5 is provided with an assembly groove 21, and the prestressed concrete pipe pile body 1 is provided with two. After the two prestressed concrete pipe pile bodies 1 are stacked, two plug plates 20 are inserted into the two assembly grooves 21 between the metal buckles 5 at the ends of the two prestressed concrete pipe pile bodies 1. The plug plate 20 is integrally formed on the inner ring surface of the hoop plate 12, and the inner ring surface of the hoop plate 12 is integrally formed with a clamping plate 13, and the clamping plate 13 is inserted into the outer ring surface of the metal buckle 5. The assembly groove 21 is an annular groove, and the end of the planting bar 2 is exposed in the assembly groove 21. The end face of the rib 2 is coplanar with the end face of the metal buckle 5, the hoop plate 12 is a semicircular ring plate, and two clamping plates 13 are provided. The two clamping plates 13 are distributed up and down on the inner ring surface of the hoop plate 12, and the clamping plate 13 is a semicircular ring plate, and the clamping groove 11 is a circular groove; the side groove 10 is a circular groove, and the height of the side groove 10 is equal to the height of the hoop plate 12, the plug plate 20 is a semicircular ring plate, and the assembly groove 21 is between the two clamping plates 13, and the end of the assembly groove 21 is fixed with a rubber splint 14, and the rubber splint 14 is a semicircular ring plate with a "U"-shaped cross section.

[0035] The reason why the assembly groove 21 is opened at the end of the metal buckle 5 is that when two prestressed concrete pipe pile bodies 1 equipped with metal buckles 5 are stacked, the assembly groove 21 provides a welding gap, and at this time, a part of the embedded steel bars 2 at the ends of the two prestressed concrete pipe pile bodies 1 are exposed, the embedded steel bars 2 at the ends of the two prestressed concrete pipe pile bodies 1 are welded together, and the metal buckles 5 at the ends of the two prestressed concrete pipe pile bodies 1 are welded together, so as to improve the firmness of the two prestressed concrete pipe pile bodies 1 after being stacked; then the two hoop plates 12 are buckled on both sides of the side groove 10, and the two hoop plates 12 are connected together by anti-slip clamps, and the clamping plate 13 is inserted into the clamping groove three 11 to realize the traction of the two metal buckles 5 and improve the tensile strength of the two metal buckles 5 after being connected.

[0036] The ends of the two hoop plates 12 are connected by an anti-slip clamp; the anti-slip clamp includes a reserved groove 15, a screw 16, a connecting plate 18 and a nut 19. Reserved grooves 15 are provided at both ends of the hoop plate 12. The reserved grooves 15 are arc-shaped grooves. The bottom surface of the reserved grooves 15 is fixed with a screw 16. The height of the screw 16 is less than half the height of the reserved groove 15. The screw 16 passes through a through hole. The through hole is provided on the surface of the connecting plate 18. The two ends of the connecting plate 18 extend into the reserved grooves 15 at the ends of the two hoop plates 12 respectively. The height of the connecting plate 18 is less than the height of the screw 16. After the end of the screw 16 passes through the connecting plate 18, the nut 19 is sleeved and screwed on the end of the screw 16.

[0037] When the two embedded bars 2 are close together, push the connecting plate 18 into the reserved groove 15 at the ends of the two hoop plates 12, then align the perforations on the surface of the connecting plate 18 with the screw 16, push the connecting plate 18 downward along the screw 16 until the connecting plate 18 overlaps the bottom surface of the reserved groove 15, and then screw the nut 19 to the end of the screw 16, so that the connecting plate 18 cooperates with the screw 16 to limit the connection of the two hoop plates 12, and the two hoop plates 12 protect the welding points of the two metal buckles 5. Example 2: Based on Example 1, a method for manufacturing prestressed concrete pipe piles is proposed, and the method includes the following steps:

[0038] A prestressed concrete pipe pile body 1 is manufactured, and a plurality of embedded steel bars 2 are inserted on the surface of the prestressed concrete pipe pile body 1; an inner ring groove 3 and an outer ring groove 4 are respectively provided at both ends of the prestressed concrete pipe pile body 1;

[0039] A metal buckle ring 5 with a ring plate structure having a U-shaped cross section is manufactured, and a clamp ring 1 6 is integrally formed at the bottom end of the inner ring plate of the metal buckle ring 5, and a clamp ring 2 8 is integrally formed at the bottom end of the outer ring plate of the metal buckle ring 5; two side plates of the metal buckle ring 5 are respectively inserted into the inner ring groove 3 and the outer ring groove 4, so that the clamp ring 1 6 is plugged into the clamping groove 1 7, and the clamp ring 2 8 is plugged into the clamping groove 2 9; if stacking is required, two prestressed concrete pipe pile bodies 1 are stacked, so that a plug plate 20 is plugged into the assembly groove 21 between the metal buckles 5 at the ends of the two prestressed concrete pipe pile bodies 1, and the plug plate 20 is realized by the hoop plate 12 and its clamping plate 13;

[0040] Welding the embedded steel bars 2 at the ends of the two prestressed concrete pipe pile bodies 1, and welding the metal buckles 5 at the ends of the two prestressed concrete pipe pile bodies 1;

[0041] Push the connecting plate 18 into the reserved grooves 15 at the ends of the two hoop plates 12, align and push the connecting plate 18 downward along the screw 16 to the bottom surface of the reserved groove 15; screw the nut 19 to the end of the screw 16 to achieve the connection and positioning of the connecting plate 18 and the screw 16 to the two hoop plates 12.

[0042] 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 concrete pipe pile, comprising a prestressed concrete pipe pile body (1), characterized in that: A plurality of embedded steel bars (2) are inserted on the surface of the prestressed concrete pipe pile body (1), and metal buckles (5) are sleeved on both ends of the prestressed concrete pipe pile body (1), and the embedded steel bars (2) pass through the metal buckles (5). An assembly groove (21) is provided on the surface of the metal buckle (5), and two prestressed concrete pipe pile bodies (1) are provided. After the two prestressed concrete pipe pile bodies (1) are stacked, two plug plates (20) are inserted in the two assembly grooves (21) between the metal buckles (5) at the ends of the two prestressed concrete pipe pile bodies (1), and the plug plates (20) are integrally formed on the inner ring surface of the hoop plate (12), and the inner ring surface of the hoop plate (12) is integrally formed with a clamping plate (13), and the clamping plate (13) is inserted on the outer ring surface of the metal buckle (5), and the ends of the two hoop plates (12) are connected by an anti-detachment clamp.

2. A prestressed concrete pipe pile according to claim 1, characterized in that: Both ends of the prestressed concrete pipe pile body (1) are provided with an inner ring groove (3) and an outer ring groove (4), the inner ring groove (3) and the outer ring groove (4) are respectively distributed on the inner ring surface and the outer ring surface of the prestressed concrete pipe pile body (1), the metal buckle (5) is a ring plate structure with a "U"-shaped cross section, and the two side plates of the metal buckle (5) are respectively inserted into the inner ring groove (3) and the outer ring groove (4).

3. A prestressed concrete pipe pile according to claim 2, characterized in that: A clamping ring (6) is integrally formed at the bottom end of the inner ring plate of the metal buckle ring (5). The clamping ring (6) is inserted into a clamping groove (7). The clamping groove (7) is arranged on the surface of the inner ring groove (3) and is an annular groove.

4. A prestressed concrete pipe pile according to claim 3, characterized in that: A second clamping ring (8) is integrally formed at the bottom end of the outer ring plate of the metal buckle ring (5). The second clamping ring (8) is inserted into a second clamping groove (9). The second clamping groove (9) is an annular groove and is arranged on the surface of the outer ring groove (4).

5. The prestressed concrete pipe pile according to claim 1, characterized in that: The assembly groove (21) is an annular groove, the end of the embedded reinforcement (2) is exposed in the assembly groove (21), and the end surface of the embedded reinforcement (2) and the end surface of the metal buckle (5) are coplanar.

6. The prestressed concrete pipe pile according to claim 1, characterized in that: The hoop plate (12) is a semicircular ring plate, and two clamping plates (13) are provided. The two clamping plates (13) are distributed up and down on the inner ring surface of the hoop plate (12), and the clamping plate (13) is a semicircular ring plate, and the clamping groove (11) is a circular ring groove.

7. The prestressed concrete pipe pile according to claim 1, characterized in that: The side groove (10) is a circular groove, the height of the side groove (10) is equal to the height of the hoop plate (12), the plug plate (20) is a semicircular ring plate, the assembly groove (21) is located between the two clamping plates (13), and a rubber clamping plate (14) is sleeved and fixed at the end of the assembly groove (21), and the rubber clamping plate (14) is a semicircular ring plate with a "U"-shaped cross section.

8. The prestressed concrete pipe pile according to claim 1, characterized in that: The anti-dropping clamp comprises a reserved groove (15), a screw (16), a connecting plate (18) and a nut (19). The two ends of the hoop plate (12) are provided with a reserved groove (15). The reserved groove (15) is an arc-shaped groove. The bottom surface of the reserved groove (15) is fixed with a screw (16). The height of the screw (16) is less than half the height of the reserved groove (15). The screw (16) passes through a through hole. The through hole is provided on the surface of the connecting plate (18). The two ends of the connecting plate (18) extend into the reserved grooves (15) at the ends of the two hoop plates (12) respectively. The height of the connecting plate (18) is less than the height of the screw (16). After the end of the screw (16) passes through the connecting plate (18), the nut (19) is sleeved and screwed on the end of the screw (16).

9. A method for manufacturing a prestressed concrete pipe pile according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: A prestressed concrete pipe pile body (1) is manufactured, and a plurality of embedded steel bars (2) are inserted into the surface of the prestressed concrete pipe pile body (1); an inner ring groove (3) and an outer ring groove (4) are respectively provided at both ends of the prestressed concrete pipe pile body (1); A metal buckle ring (5) with a ring plate structure having a "U"-shaped cross section is manufactured, a first clamp ring (6) is integrally formed at the bottom end of the inner ring plate of the metal buckle ring (5), and a second clamp ring (8) is integrally formed at the bottom end of the outer ring plate of the metal buckle ring (5); two side plates of the metal buckle ring (5) are respectively inserted into the inner ring groove (3) and the outer ring groove (4), Insert the first clamp ring (6) into the first clamp slot (7), and insert the second clamp ring (8) into the second clamp slot (9); If stacking is required, two prestressed concrete pipe pile bodies (1) are stacked, and a plug plate (20) is inserted into the assembly groove (21) between the metal buckles (5) at the ends of the two prestressed concrete pipe pile bodies (1), and the plug plate (20) is realized by a hoop plate (12) and a clamping plate (13); the embedded steel bars (2) at the ends of the two prestressed concrete pipe pile bodies (1) are welded, and the metal buckles (5) at the ends of the two prestressed concrete pipe pile bodies (1) are welded; The connecting plate (18) is pushed into the reserved grooves (15) at the ends of the two hoop plates (12), aligned and pushed downward along the screw rod (16) to the bottom surface of the reserved groove (15); a nut (19) is screwed onto the end of the screw rod (16), so that the connecting plate (18) cooperates with the screw rod (16) to limit the connection of the two hoop plates (12).

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