Precast pile and angle steel tower connecting structure

Abstract

The utility model relates to a precast pile and angle steel tower connecting structure which comprises a pile top steel ring fixedly connected with the upper end of a precast pile, an annular top plate fixedly connected with the top of the pile top steel ring and a movable blind plate connected with the bottom of a tower bottom plate of an angle steel tower, and the movable blind plate and the top plate are vertically distributed and fixedly connected. A plurality of leveling gaskets are placed between the movable blind plate and the top plate and are of an arc-shaped structure, the arc radius of the leveling gaskets is the same as the annular radius of the top plate, and the circumferential length of the leveling gaskets is smaller than half of the annular perimeter of the top plate. The leveling gasket is arranged on the relatively low side above the top plate, and the length of the leveling gasket is smaller than half of the perimeter of the top plate, so that the leveling gasket can fill the gap in the included angle gap, and the upper surface of the movable blind plate is kept horizontal. The gap is filled through the leveling gasket, the connection contact area of the top plate and the movable blind plate is increased, and the connection strength and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, and is mainly applied to the underground foundation of electric power poles and towers. Specifically, it refers to a connecting structure between a precast pile and an angle steel tower. Background Technique

[0002] With the popularization and application of precast concrete pile foundations in the electric power industry, precast piles have the advantages of fast construction period, less environmental pollution, and small floor area compared with traditional cast-in-place piles and stepped foundations. They have received unanimous praise from customers during the application process, can create value for customers, and save costs.

[0003] However, when the precast concrete pile foundation is applied to the angle steel tower line, there is a deficiency. After the underground pile driving of the precast concrete pile is completed, there is a deviation in the pile verticality, resulting in the inclination and non-leveling of the pile top. When the pile top is not level, there will be a gap between the tower bottom plate and the pile top when connecting with the tower bottom plate of the angle steel tower, thus resulting in the problem of insufficient contact area between the tower bottom plate and the pile top, which is not convenient for connection and has low connection strength. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a connecting structure between a precast pile and an angle steel tower, which can effectively solve the problem of less contact area between the pile top and the tower bottom plate of the angle steel tower and improve the connection strength.

[0005] The utility model is realized by the following technical scheme. A connecting structure between a precast pile and an angle steel tower includes a pile top steel ring fixedly connected to the upper end of the precast pile. A circular top plate is fixedly connected to the top of the pile top steel ring, and a movable blind plate connected to the bottom of the tower bottom plate of the angle steel tower. The movable blind plate and the top plate are fixedly connected up and down. A plurality of leveling gaskets are placed between the movable blind plate and the top plate. The leveling gaskets are of an arc structure. The arc radius of the leveling gaskets is the same as the circular radius of the top plate, and the circumferential length of the leveling gaskets is less than half of the circumferential perimeter of the top plate.

[0006] In this scheme, a top plate is arranged on the pile top of the precast pile, and a movable blind plate is arranged below the tower bottom plate. When the precast pile is inclined during pile driving and the top plate is not level, an included angle gap will be generated between the movable blind plate and the top plate after they are connected. By padding the leveling gasket on the relatively lower side above the top plate, since the length of the leveling gasket is less than half of the perimeter of the top plate, the leveling gasket can be placed in the included angle gap to fill the gap, so that the upper surface of the movable blind plate remains level. Filling the gap with the leveling gasket increases the connection contact area between the top plate and the movable blind plate, and improves the connection strength and stability.

[0007] As an optimization, the length of the leveling shim is 1 / 3 to 5 / 12 of the circumferential perimeter of the top plate. This optimization scheme limits the length of the leveling shim. If the length is too large, the leveling shim cannot fill the gap to make the movable blind plate horizontal. If the length is too small, the gap filling area will be reduced, and the connection contact area between the top plate and the movable blind plate will be decreased.

[0008] As an optimization, the movable blind plate, the leveling shim, and the top plate are connected by a number of first bolts, and the number of first bolts is evenly distributed along the circumference. The movable blind plate, the leveling shim, and the top plate are provided with first screw holes for the first bolts to pass through. This optimization scheme facilitates the installation and fixation of the movable blind plate, the leveling shim, and the top plate.

[0009] As an optimization, stiffening plates are fixedly connected between adjacent first screw holes at the bottom of the top plate, and the stiffening plates are fixedly connected to the inner wall of the pile top steel ring. This optimization scheme improves the structural strength of the top plate.

[0010] As an optimization, the movable blind plate and the tower bottom plate are connected by a number of second bolts, and the number of second bolts is evenly distributed circumferentially at the center of the movable blind plate. The movable blind plate and the tower bottom plate are provided with second screw holes for the second bolts to pass through. This optimization scheme facilitates the installation and fixation of the movable blind plate and the tower bottom plate.

[0011] As an optimization, an operation cavity is provided inside the pile top steel ring, and a manhole is opened on the side wall of the pile top steel ring. The manhole, the first screw hole, and the second screw hole are all communicated with the operation cavity. This optimization scheme facilitates the installation of the first bolt and the second bolt by setting a manhole inside the operation cavity.

[0012] As an optimization, a slurry retaining plate is fixedly connected to the top of the precast pile, and the operation cavity is formed between the slurry retaining plate and the top plate. This optimization scheme facilitates the sealing of the casting cavity of the precast pile.

[0013] As an optimization, lifting lugs are symmetrically and fixedly provided on the outside of the pile top steel ring. This optimization scheme facilitates the hoisting of the precast pile.

[0014] The beneficial effects of the present utility model are as follows: A top plate is provided on the top of the precast pile, and a movable blind plate is provided below the tower bottom plate. When the precast pile is inclined during pile sinking and the top plate is not horizontal, an angular gap will be generated between the movable blind plate and the top plate after they are connected. By padding a leveling shim on the relatively lower side above the top plate, since the length of the leveling shim is less than half of the perimeter of the top plate, the leveling shim can be placed in the angular gap to fill the gap, so that the upper surface of the movable blind plate remains horizontal. Filling the gap with the leveling shim increases the connection contact area between the top plate and the movable blind plate, thereby improving the connection strength and stability between the precast pile and the angle steel tower. By providing a manhole inside the pile top steel ring, it is convenient for the connection and installation of the first bolt and the second bolt. Description of the Drawings

[0015] Figure 1 This is a cross-sectional view of the utility model.

[0016] Figure 2 This is a top view of the top plate.

[0017] Figure 3 This is a top view of the leveling shim.

[0018] Figure 4 This is a top view of the movable blind plate.

[0019] As shown in the figure:

[0020] 1. Prefabricated pile, 2. Pile top steel ring, 3. Rib plate, 4. Top plate, 5. Leveling shim, 6. Movable blind plate, 7. Grout retaining plate, 8. Lifting lug, 9. Manhole, 10. First screw hole, 11. Second screw hole. Specific embodiments

[0021] To clearly illustrate the technical features of this solution, the following describes this solution through specific embodiments.

[0022] As Figures 1 to 4 shown, a connection structure between a prefabricated pile and an angle steel tower includes a pile top steel ring fixedly connected to the upper end of the prefabricated pile 1, a circular top plate 4 fixedly connected to the top of the pile top steel ring 2, and a movable blind plate 6 connected to the bottom of the tower bottom plate (not shown in the figure) of the angle steel tower. A grout retaining plate 7 is fixedly connected to the top of the prefabricated pile 1. The grout retaining plate 7 is located inside the pile top steel ring 2, and an operation cavity is formed between the grout retaining plate 7 and the top plate 4.

[0023] Specifically, the prefabricated pile 1 is a precast concrete pile. During the production of the prefabricated pile, when pouring concrete, the pile top steel ring 2, the grout retaining plate 7 and the prefabricated pile 1 are integrally cast. The circular top plate 4 is welded and fixed to the top of the pile top steel ring 2, and lifting lugs 8 are also symmetrically welded and fixed to the outside of the pile top steel ring 2.

[0024] In this embodiment, the movable blind plate 6 is circular, and the outer diameter of the movable blind plate 6 is the same as the outer diameter of the top plate 4. The movable blind plate 6 and the tower bottom plate are fixedly connected by a plurality of second bolts. The plurality of second bolts are evenly distributed circumferentially at the center of the movable blind plate 6. Second screw holes 11 for the second bolts to pass through are provided on the movable blind plate 6 and the tower bottom plate. In this embodiment, four second screw holes 11 are provided at the center of the movable blind plate 6 and the tower bottom plate, and the movable blind plate is connected to the tower bottom plate by four second bolts.

[0025] The movable blind plate 6 and the top plate 4 are fixedly connected in an up-and-down distribution. A number of leveling gaskets 5 are placed between the movable blind plate 6 and the top plate 4. The leveling gasket 5 is of an arc structure. The arc radius of the leveling gasket 5 is the same as the annular radius of the top plate 4, and the circumferential length of the leveling gasket 5 is less than half of the annular circumference of the top plate 4. Specifically, the length of the leveling gasket 5 is 1 / 3 to 5 / 12 of the annular circumference of the top plate 4.

[0026] The movable blind plate 6, the leveling gasket 5 and the top plate 4 are fixedly connected by a number of first bolts. The number of first bolts is evenly distributed along the circumference. First screw holes 10 for the first bolts to pass through are provided on the movable blind plate 6, the leveling gasket 5 and the top plate 4. In this embodiment, there are twelve first bolts. There are twelve first screw holes 10 evenly distributed on the circumference of the movable blind plate 6 and the top plate 4. The length of the leveling gasket 5 is 5 / 12 of the annular circumference of the top plate 4, and there are five first screw holes 10 evenly distributed on the leveling gasket 5. Rib plates 3 are welded and fixed at the bottom of the top plate 4 between adjacent first screw holes 10.

[0027] A manhole 9 is opened on the side wall of the pile top steel ring 2. The manhole 9, the first screw hole 10 and the second screw hole 11 are all communicated with the operation cavity inside the pile top steel ring.

[0028] Working principle: The precast pile 1 is jacked into the ground. After the pile is jacked, the leveling gasket 5 is placed according to the inclination degree of the top plate 4. The leveling gasket 5 is placed on the side with a relatively lower position on the top plate 4, and then the movable blind plate 6 is installed. The number of leveling gaskets 5 needs to be padded until the upper surface of the movable blind plate 6 is horizontal according to the inclination degree. The operator reaches into the operation cavity through the manhole 9 of the pile top steel ring 2, and the first bolts are inserted into the first screw holes 10 of the top plate 4, the leveling gasket 5 and the movable blind plate 6, so as to bolt-connect the top plate 4, the leveling gasket 5 and the movable blind plate 6. Finally, inside the operation cavity, the movable blind plate 6 and the tower bottom plate are bolt-connected by inserting second bolts into the second screw holes 11 of the movable blind plate 6 and the tower bottom plate, thus completing the effective connection between the precast pile foundation and the tower bottom plate of the angle steel tower.

[0029] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted from the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the claims of the present invention.

Claims

1. A prefabricated pile and angle steel tower connection structure, characterized in that: The utility model comprises a pile top steel ring (2) fixedly connected to the upper end of a prefabricated pile (1), a circular top plate (4) being fixedly connected to the top of the pile top steel ring (2), and a movable blind plate (6) connected to the bottom of a tower bottom plate of an angle steel tower, the movable blind plate (6) and the top plate (4) being fixedly connected in an upper and lower distribution, a plurality of leveling gaskets (5) being placed between the movable blind plate and the top plate, the leveling gasket (5) being an arc-shaped structure, the arc radius of the leveling gasket being the same as the circular radius of the top plate (4), and the circumferential length of the leveling gasket being less than half of the circular circumference of the top plate (4).

2. The prefabricated pile and angle steel tower connection structure according to claim 1, characterized in that: The length of the leveling gasket (5) is 1 / 3 to 5 / 12 of the annular circumference of the top plate (4).

3. The prefabricated pile and angle steel tower connection structure according to claim 1, characterized in that: The movable blind plate (6), the leveling gasket (5) and the top plate (4) are connected by a plurality of first bolts, the plurality of first bolts being evenly distributed along the circumference, and the movable blind plate, the leveling gasket and the top plate are provided with first screw holes (10) for the first bolts to pass through.

4. The prefabricated pile and angle steel tower connection structure according to claim 3, characterized in that: The bottom of the top plate (4) is fixedly connected with a rib plate (3) between adjacent first screw holes (10), and the rib plate is fixedly connected to the inner wall of the pile top steel ring (2).

5. The prefabricated pile and angle steel tower connection structure according to claim 3, characterized in that: The movable blind plate (6) and the tower bottom plate are connected via a plurality of second bolts, the plurality of second bolts are located at the center of the movable blind plate and are evenly distributed in the circumferential direction, and the movable blind plate and the tower bottom plate are provided with second screw holes (11) for the second bolts to pass through.

6. The prefabricated pile and angle steel tower connection structure according to claim 5, characterized in that: An operating cavity is provided in the pile top steel ring (2), and a hand hole (9) is provided on the side wall of the pile top steel ring. The hand hole, the first screw hole (10), and the second screw hole (11) are all connected to the operating cavity.

7. The prefabricated pile and angle steel tower connection structure according to claim 6, characterized in that: A slurry retaining plate (7) is fixedly connected to the top of the prefabricated pile (1), and the operating cavity is formed between the slurry retaining plate and the top plate.

8. The prefabricated pile and angle steel tower connection structure according to claim 1, characterized in that: Lifting ears (8) are symmetrically fixedly arranged on the outer side of the pile top steel ring (2).

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