Concrete pipe pile steel bar connecting structure

Abstract

The utility model provides a concrete pipe pile reinforcing steel bar connecting structure, which relates to the field of concrete pipe piles and comprises an outer spiral reinforcing steel bar, a reinforcing steel bar ring, a connecting rod and a central pipe, an outer vertical reinforcing steel bar is welded between the outer spiral reinforcing steel bar and the reinforcing steel bar ring, and an inner vertical reinforcing steel bar is welded on the inner side of the reinforcing steel bar ring. And meanwhile, the connecting rods are welded between the inner vertical steel bars and the central pipe, the central pipe comprises a prefabricated cement pipe on the inner layer, the outer side of the prefabricated cement pipe is sleeved with a steel cylinder, and an anti-corrosion coating is arranged on the outer side of the steel cylinder. The utility model solves the problems that the internal radial supporting effect deviation still exists in the steel bar structure related to the existing concrete pipe pile, and the pouring forming process is troublesome.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pipe piles, in particular to a concrete pipe pile steel bar connection structure. Background Art

[0002] Prestressed concrete pipe piles are composed of a steel cage composed of main steel bars and stirrups, and concrete is poured outside the steel cage.

[0003] Existing concrete pipe piles are generally made into specific lengths. When pre-burying concrete pipe piles in deeper pile pits, multiple concrete pipe piles need to be welded together. During the welding process, if there is misalignment between the pipe piles, the welding between the pipe piles will be loose, affecting the use of the pipe piles and insufficient prestressing of the pipe piles. After searching, the prior art (application number: CN202021744164.2) records "a steel structure of a concrete pipe pile body, which relates to the technical field of concrete pipe piles, specifically a steel structure of a concrete pipe pile body, including a bottom plate, the top of which is fixedly connected with inner connecting steel bars and outer connecting steel bars, inner spiral steel bars are arranged between the inner connecting steel bars and the outer connecting steel bars, and outer spiral steel bars are arranged outside the outer connecting steel bars. The top ends of the inner connecting steel bars and the outer connecting steel bars are fixedly connected with a top mounting plate. By using the inner connecting steel bars and the outer connecting steel bars as the steel structure skeleton of the pipe pile, the inner connecting steel bars and the outer connecting steel bars play a dual supporting role, thereby improving the supporting strength of the pipe pile and preventing the pipe pile from being crushed. By using the inner spiral steel bars and the outer spiral steel bars in combination, the inner spiral steel bars and the outer spiral steel bars are used to increase the prestressing force of the pipe pile, thereby preventing the pipe pile from being broken due to the pressure from the side."

[0004] However, although the steel structure of the concrete pipe pile body in the prior art has achieved the enhancement of prestress, it still has some shortcomings; the steel structure involved in the existing concrete pipe pile is only spirally wound in the circumferential direction, and there is no relatively stable internal support structure in the center of the pipe pile, resulting in that when the pressure on the outside is large during deep burial operations, it will still cause a large lateral (radial) pressure on the pipe pile, resulting in deformation of the internal steel structure. Secondly, after the steel cage is manufactured, it needs to be loaded into a mold for cement pouring and molding, and then centrifugal rotation is used to form an internal hollow structure, which is a relatively troublesome process. Utility Model Content

[0005] In order to overcome the defects of the prior art, a concrete pipe pile steel bar connection structure is provided to solve the problems that the steel bar structure involved in the existing concrete pipe pile still has internal radial support effect deviation and the pouring molding process is relatively troublesome.

[0006] To achieve the above-mentioned purpose, a concrete pipe pile steel bar connection structure is provided, comprising: an outer spiral steel bar, a steel bar ring, a connecting rod and a central tube, wherein an outer vertical steel bar is welded between the outer spiral steel bar and the steel bar ring, and an inner vertical steel bar is welded on the inner side of the steel bar ring, and the connecting rod is welded between the inner vertical steel bar and the central tube, wherein the central tube comprises an inner layer of a prefabricated cement pipe, and a steel cylinder is sheathed on the outer side of the prefabricated cement pipe, and an anti-corrosion coating is provided on the outer side of the steel cylinder.

[0007] Furthermore, the outer spiral steel bar is configured as a spiral structure, and the outer vertical steel bars are welded and arranged along the inner circle of the outer spiral steel bar in a ring-shaped matrix structure.

[0008] Furthermore, the outer diameter of the inner vertical steel bars is greater than that of the outer vertical steel bars, and the number of the inner vertical steel bars is less than that of the outer vertical steel bars.

[0009] Furthermore, the steel bar rings are arranged at equal intervals in the vertical direction, and the steel bar rings have a flat ring structure, and the thickness of the steel bar rings in the vertical direction is greater than the outer diameter of the inner vertical steel bar.

[0010] Furthermore, the connecting rod comprises a first rod sleeve and a second rod sleeve at both ends, and a telescopic rod is slidably inserted between the first rod sleeve and the second rod sleeve, and the outer ends of the first rod sleeve and the second rod sleeve are both configured as arc structures.

[0011] Furthermore, the outer sides of the first rod sleeve and the second rod sleeve are both screwed with positioning bolts, and the outer wall of the telescopic rod is provided with a positioning hole, and the telescopic rod is configured as a quadrangular column structure.

[0012] Furthermore, reinforcing ribs are embedded inside the prefabricated cement pipe, and the reinforcing ribs are arranged in a ring matrix in the circumferential direction of the prefabricated cement pipe.

[0013] The beneficial effects of the utility model are:

[0014] 1. The steel bar ring is placed between the outer vertical steel bar and the inner vertical steel bar to increase the connection strength between the inner and outer vertical steel bars. At the same time, the inner side of the steel bar ring is connected to the central tube through a connecting rod, so that a connection radiating outward is formed on the outer side of the central tube to perform an internal support structure, thereby strengthening the prestressing effect on the radial pressure on the outer side of the steel bar ring. Compared with the hollow structure inside the existing pipe pile steel cage, the compression effect is further enhanced when the concrete pipe pile is deeply buried, thereby extending the service life of the pipe pile;

[0015] 2. The prefabricated cement pipe included in the central tube and the internal reinforcement ribs are used to strengthen the structural strength of the prefabricated cement pipe. At the same time, the anti-corrosion coating on the outside of the steel tube enhances the anti-corrosion effect during deep burial. At the same time, the steel tube is conveniently fixed to the connecting rod by welding. The overall structure of the central tube allows a concrete ring structure to be naturally formed on the outside of the central tube when the concrete is poured into the mold, and all the steel structures on the outside of the central tube are wrapped. Due to the hollow structure of the central tube itself, the hollow structure of the pipe pile can be formed after the concrete is solidified. There is no need to centrifugally rotate the mold through rotating equipment, thereby reducing the processing process and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the axial cross-sectional structure of an embodiment of the utility model.

[0017] Figure 2 This is a schematic diagram of the connection structure between the outer spiral steel bar and the outer vertical steel bar in an embodiment of the utility model.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the inner side structure of the steel bar ring according to an embodiment of the utility model.

[0019] Figure 4 This is a schematic diagram of the connecting rod structure of an embodiment of the utility model.

[0020] Figure 5 It is a schematic diagram of the axial cross-sectional structure of the central tube of an embodiment of the utility model.

[0021] In the figure: 1. External spiral steel bar; 2. External vertical steel bar; 3. Steel bar ring; 4. Internal vertical steel bar; 5. Connecting rod; 51. First rod sleeve; 52. Telescopic rod; 53. Positioning hole; 54. Second rod sleeve; 55. Positioning bolt; 6. Center tube; 61. Prefabricated cement pipe; 62. Steel cylinder; 63. Anti-corrosion coating; 64. Reinforcement ribs. DETAILED DESCRIPTION

[0022] Reference Figures 1 to 5 As shown, the utility model provides a concrete pipe pile steel bar connection structure, including: an outer spiral steel bar 1, a steel bar ring 3, a connecting rod 5 and a central tube 6, an outer vertical steel bar 2 is welded between the outer spiral steel bar 1 and the steel bar ring 3, and an inner vertical steel bar 4 is welded on the inner side of the steel bar ring 3, and the connecting rod 5 is welded between the inner vertical steel bar 4 and the central tube 6, the central tube 6 includes an inner prefabricated cement pipe 61, and a steel cylinder 62 is sleeved on the outer side of the prefabricated cement pipe 61, and an anti-corrosion coating 63 is provided on the outer side of the steel cylinder 62, and a reinforcing rib 64 is embedded in the interior of the prefabricated cement pipe 61, and the reinforcing rib 64 is arranged in a ring matrix in the circumferential direction of the prefabricated cement pipe 61.

[0023] In this embodiment, the outer spiral steel bars 1, the outer vertical steel bars 2, the steel bar rings 3, the inner vertical steel bars 4, the connecting rods 5 and the central tube 6 constitute the concrete pipe pile steel bar connection structure involved in this application.

[0024] Specifically, the prefabricated cement pipe 61 is a prefabricated part, and its size can be pre-customized according to the outer diameter of the concrete pipe pile and the thickness of the filling layer (the wall thickness of the concrete pipe pile); the steel cylinder 62 strengthens the strength of the outer side of the prefabricated cement pipe 61 on the one hand, and is convenient for welding connection with the connecting rod 5, and the thickness of the steel cylinder 62 is about half the thickness of the prefabricated cement pipe 61; by setting the reinforcing ribs 64, it is convenient to strengthen the internal structural strength of the prefabricated cement pipe 61.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the outer spiral steel bar 1 is set to a spiral structure, and the outer vertical steel bars 2 are welded and arranged along the inner circle of the outer spiral steel bar 1 in a ring matrix structure, the outer diameter of the inner vertical steel bars 4 is larger than the outer vertical steel bars 2, and the number of the inner vertical steel bars 4 is less than the outer vertical steel bars 2, the steel bar rings 3 are arranged at equal intervals in the vertical direction, and the steel bar rings 3 are flat ring structures, and the thickness of the steel bar rings 3 in the vertical direction is greater than the outer diameter of the inner vertical steel bars 4.

[0026] As a preferred embodiment, by arranging steel bar rings 3 equidistantly in the upper and lower parts, the use of inner spiral steel bars is reduced compared with the prior art, thereby reducing costs. In addition, the steel bar rings 3 with a flat ring structure facilitate increasing the contact area with the outer vertical steel bars 2 and the inner vertical steel bars 4 during welding, thereby enhancing the welding firmness.

[0027] like Figure 4 As shown, the connecting rod 5 includes a first rod sleeve 51 and a second rod sleeve 54 at both ends, and a telescopic rod 52 is slidably inserted between the first rod sleeve 51 and the second rod sleeve 54. At the same time, the outer ends of the first rod sleeve 51 and the second rod sleeve 54 are both configured as arc structures, and the outer sides of the first rod sleeve 51 and the second rod sleeve 54 are both screwed with positioning bolts 55, and the outer wall of the telescopic rod 52 is provided with a positioning hole 53, and the telescopic rod 52 is configured as a quadrangular prism structure.

[0028] As a preferred embodiment, by providing a first rod sleeve 51, a second rod sleeve 54 and a telescopic rod 52, it is convenient to flexibly adjust the length of the connecting rod 5, thereby facilitating flexible welding between the central tube 6 and the inner vertical steel bar 4. At the same time, by setting the outer end of the rod sleeve to an arc structure, the welding contact area is increased.

[0029] When in use, the steel bar ring is used between the outer vertical steel bars and the inner vertical steel bars to increase the connection strength between the inner and outer vertical steel bars. At the same time, the inner side of the steel bar ring is connected to the central tube through a connecting rod, so that a connection radiating outward is formed on the outer side of the central tube to perform an internal support structure, thereby strengthening the prestressing effect on the radial pressure on the outer side of the steel bar ring. The overall structure of the central tube allows a concrete ring structure to be naturally formed on the outer side of the central tube when concrete is poured into the mold, and all the steel bar structures on the outer side of the central tube are wrapped. Due to the hollow structure of the central tube itself, the hollow structure of the pipe pile can be formed after the concrete is solidified, and there is no need to centrifugally rotate the mold through a rotating device, thereby reducing the processing process and improving the processing efficiency.

[0030] The concrete pipe pile steel bar connection structure of the utility model can effectively solve the problems that the steel bar structure involved in the existing concrete pipe piles still has deviation in the internal radial support effect and the pouring and molding process is relatively troublesome. It further enhances the internal radial support effect of the concrete pipe pile on the basis of the existing concrete pipe pile steel bar connection structure technology, thereby enhancing the compression effect on the outside when used in deep burial conditions, while reducing the pouring and molding process, reducing the cost of processing equipment and improving processing efficiency.

Claims

1. A concrete pipe pile steel bar connection structure, comprising: An outer spiral steel bar (1), a steel bar ring (3), a connecting rod (5) and a central tube (6), characterized in that an outer vertical steel bar (2) is welded between the outer spiral steel bar (1) and the steel bar ring (3), and an inner vertical steel bar (4) is welded on the inner side of the steel bar ring (3), and at the same time, the connecting rod (5) is welded between the inner vertical steel bar (4) and the central tube (6), and the central tube (6) includes an inner prefabricated cement pipe (61), and a steel cylinder (62) is sleeved on the outer side of the prefabricated cement pipe (61), and an anti-corrosion coating (63) is provided on the outer side of the steel cylinder (62).

2. A concrete pipe pile steel bar connection structure according to claim 1, characterized in that: The outer spiral steel bar (1) is configured as a spiral structure, and the outer vertical steel bars (2) are arranged in a ring-shaped matrix structure by welding along the inner circle of the outer spiral steel bar (1).

3. The concrete pipe pile steel bar connection structure according to claim 1, characterized in that: The outer diameter of the inner vertical steel bars (4) is greater than that of the outer vertical steel bars (2), and the number of the inner vertical steel bars (4) is less than that of the outer vertical steel bars (2).

4. A concrete pipe pile steel bar connection structure according to claim 1, characterized in that: The steel bar rings (3) are arranged at equal intervals in the vertical direction, and the steel bar rings (3) are flat ring structures, and the thickness of the steel bar rings (3) in the vertical direction is greater than the outer diameter of the inner vertical steel bar (4).

5. The concrete pipe pile steel bar connection structure according to claim 1, characterized in that: The connecting rod (5) comprises a first rod sleeve (51) and a second rod sleeve (54) at two ends, and a telescopic rod (52) is slidably inserted between the first rod sleeve (51) and the second rod sleeve (54), and the outer ends of the first rod sleeve (51) and the second rod sleeve (54) are both configured as arc structures.

6. A concrete pipe pile steel bar connection structure according to claim 5, characterized in that: The outer sides of the first rod sleeve (51) and the second rod sleeve (54) are both screwed with positioning bolts (55), and the outer wall of the telescopic rod (52) is provided with a positioning hole (53), and the telescopic rod (52) is configured as a quadrangular prism structure.

7. The concrete pipe pile steel bar connection structure according to claim 1, characterized in that: The prefabricated cement pipe (61) is embedded with reinforcing ribs (64) inside, and the reinforcing ribs (64) are arranged in a ring matrix in the circumferential direction of the prefabricated cement pipe (61).

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