Prestressed pipe pile concrete filling core leakage-free slurry device

Abstract

The utility model discloses a prestressed pipe pile concrete filling core free leakage mortar device, include: pipe pile main part, free leakage mortar subassembly is fixedly arranged in the inside of pipe pile main part, and the concrete filling core is poured between pipe pile main part inner wall and free leakage mortar subassembly top, steel reinforcement cage structure is fixedly arranged at the top of free leakage mortar subassembly, and the steel reinforcement cage structure sets up in the inside of concrete filling core, fixed mechanism is set up at the top of steel reinforcement cage structure, and fixed mechanism swing setting is in the top of pipe pile main part, free leakage mortar subassembly includes: water-swelling waterstop, auxiliary groove and steel backing plate, water-swelling waterstop swing setting is in the inside of pipe pile main part, and water-swelling waterstop outer surface is attached with pipe pile main part inner wall, and auxiliary groove is set up in the inside of water-swelling waterstop, and steel backing plate is inlaid in the inside of auxiliary groove. The device of the utility model can eliminate the gap between steel backing plate and pipe pile main part, and effectively prevent the leakage of concrete filling core in the pouring process.

Description

Technical Field

[0001] This utility model belongs to the field of prestressed pipe pile technology, and more specifically, it relates to a prestressed pipe pile concrete core filling leakage prevention device. Background Technology

[0002] In the foundation construction of high-rise buildings, industrial and civil buildings, prestressed concrete pipe piles are widely used because of their high-strength concrete, which can penetrate dense sand layers and strongly weathered layers, providing a wide range of single pile bearing capacity. During the construction of prestressed concrete pipe piles, in order to enhance the bond and friction between the pile head and the inner hole of the pipe pile, improve the bearing capacity and stability of the pile, and prevent leakage, it is usually necessary to carry out concrete core filling within a certain height range of the pipe pile.

[0003] In traditional prestressed concrete pipe pile filling construction, steel support plates are installed inside the pipe pile to control the concrete elevation and prevent concrete leakage. If a steel support plate with the same inner diameter as the pipe pile is used, uneven concrete distribution due to vibration during the prestressed pipe pile fabrication process may affect the roundness of the pipe pile, making it difficult to smoothly insert the steel support plate. This necessitates frequent cutting of the obstructing parts, which not only increases labor costs but also affects the construction progress. If a steel support plate with a diameter 20-40mm smaller than the inner diameter of the pipe pile is used, although the insertion problem can be solved, gaps will exist between the steel support plate and the inner wall of the pipe pile. This can lead to aggregate loss and grout leakage during the concrete filling process, affecting the density of the concrete, thereby reducing the pile's bearing capacity and stability, and posing a risk of leakage. Utility Model Content

[0004] The purpose of this utility model is to provide a prestressed concrete core filling device to prevent grout leakage, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a prestressed concrete core-filling grout-free device for pipe piles, comprising: a pipe pile body; a grout-free component, which is fixedly installed inside the pipe pile body, and a concrete core is poured between the inner wall of the pipe pile body and the top of the grout-free component; a reinforcing cage structure, which is fixedly installed on the top of the grout-free component and is located inside the concrete core; and a fixing mechanism, which is located on the top of the reinforcing cage structure and is movably installed on the top of the pipe pile body; wherein, the grout-free component includes: a water-swellable sealing ring, an auxiliary groove, and a steel support plate, the water-swellable sealing ring being movably installed inside the pipe pile body, and the outer surface of the water-swellable sealing ring being in contact with the inner wall of the pipe pile body, the auxiliary groove being opened inside the water-swellable sealing ring, and the steel support plate being embedded inside the auxiliary groove.

[0006] In a preferred embodiment, the reinforcing cage structure includes: vertical reinforcing bars and reinforcing rings. The vertical reinforcing bars are welded to the top of the steel support plate and are arranged in a ring with uniform intervals. The reinforcing rings are welded between the vertical reinforcing bars and are arranged in a vertical direction with uniform intervals. The bottom reinforcing ring is welded to the top of the steel support plate.

[0007] In a preferred embodiment, the grout-free assembly further includes a reinforcing ring, which is welded to the top of the steel support plate and is fully welded to the vertical reinforcing bar.

[0008] In a preferred embodiment, the steel cage structure further includes reinforcing bars, which are welded between the outer sides of the vertical reinforcing bars and are arranged in a spiral shape.

[0009] In a preferred embodiment, the fixing mechanism includes: a fixing frame, a sliding seat, a round hole, a hook, and a locking nut. The fixing frame is movably disposed on the top of the pipe pile body and is cross-shaped. The sliding seat is slidably disposed inside the fixing frame through a dovetail groove. The round hole is through-hole disposed inside the sliding seat. The hook is movably disposed inside the round hole and is movably disposed outside the topmost reinforcing bar ring. The locking nut is threadedly disposed on the outside of the top of the hook and the bottom of the locking nut is in contact with the top of the sliding seat.

[0010] In a preferred embodiment, the fixing mechanism further includes: a control seat, a threaded cylinder, and a limiting bolt. The control seat is fixedly disposed on the top of the sliding seat and is slidably disposed on the outside of the fixing frame through a dovetail groove. The threaded cylinder is fixedly disposed inside the control seat. The limiting bolt is disposed inside the threaded cylinder through a threaded connection, and the bottom end of the limiting bolt is tightly fitted with the top of the fixing frame. A knob is fixedly disposed on the top end of the limiting bolt.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, by setting up a grout-free component, ensures that the water-swellable sealing ring is relatively small in size before it absorbs water and expands. This allows the steel support plate and the water-swellable sealing ring to be easily placed in a designated position inside the pipe pile body. As the water-swellable sealing ring absorbs water and expands, its volume gradually increases, allowing the outer surface of the water-swellable sealing ring to fit tightly against the inner wall of the pipe pile body. This not only ensures that the steel support plate can be easily placed inside the pipe pile body, but also eliminates any gaps that may exist between the steel support plate and the pipe pile body, effectively preventing grout leakage during the concrete filling process.

[0012] 2. This utility model increases the connection strength and reliability between the steel cage structure and the steel support plate by setting a reinforcing ring, which is welded to the top of the steel support plate and is firmly connected to the vertical steel bars by full welding. The full welding process can ensure that the connection part can withstand greater tensile and shear forces, avoid breakage during long-term use, and ensure the service life of the pipe pile and the concrete core.

[0013] 3. By setting a sliding seat, a locking nut, and a hanging hook, this utility model can fix the steel ring between the sliding seat and the hanging hook. In this way, the fixing mechanism can hang the grout-free component and the steel cage structure inside the pipe pile body, effectively preventing the grout-free component from shifting during construction and ensuring the stability of the grout-free component. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of the leak-proof grout assembly of this utility model.

[0016] Figure 3 This is a structural schematic diagram of the steel cage structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the lower surface structure of the fixing frame of this utility model.

[0018] Figure 5 This is a schematic diagram of the upper surface structure of the sliding seat of this utility model.

[0019] Figure 6 This is a schematic diagram of the sliding seat and hanging hook of this utility model.

[0020] Explanation of reference numerals in the attached figures: 1. Pipe pile body; 2. Leak-proof grouting component; 201. Water-swellable sealing ring; 202. Auxiliary groove; 203. Steel support plate; 204. Reinforcing ring; 3. Concrete core filler; 4. Reinforcing cage structure; 401. Vertical reinforcing bar; 402. Reinforcing bar ring; 403. Reinforcing bar; 5. Fixing mechanism; 501. Fixing frame; 502. Sliding seat; 503. Round hole; 504. Hanging hook; 505. Locking nut; 506. Control seat; 507. Threaded cylinder; 508. Limit bolt. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Example 1: As attached Figure 1 To be continued Figure 6As shown, the prestressed pipe pile concrete core filling leakage prevention device of this utility model includes a pipe pile body 1, a leakage prevention component 2, a concrete core 3, a steel cage structure 4, and a fixing mechanism 5. The leakage prevention component 2 is fixedly installed inside the pipe pile body 1, and a concrete core 3 is poured between the inner wall of the pipe pile body 1 and the top of the leakage prevention component 2. The steel cage structure 4 is fixedly installed on the top of the leakage prevention component 2, and the steel cage structure 4 is installed inside the concrete core 3. The fixing mechanism 5 is installed on the top of the steel cage structure 4, and the fixing mechanism 5 is movably installed on the top of the pipe pile body 1.

[0023] In this embodiment, the leak-proof component 2 includes: a water-swellable sealing ring 201, an auxiliary groove 202, and a steel support plate 203. The water-swellable sealing ring 201 is movably disposed inside the pipe pile body 1, and its outer surface is in contact with the inner wall of the pipe pile body 1. The water-swellable sealing ring 201 is made of water-swellable rubber. The auxiliary groove 202 is formed inside the water-swellable sealing ring 201, and the steel support plate 203 is embedded inside the auxiliary groove 202. The outer diameter of the steel support plate 203 is 40mm smaller than the inner diameter of the pipe pile body 1. When the water-swellable sealing ring 201 has not yet absorbed water and expanded, its size is relatively small, allowing the steel support plate 203 and the water-swellable sealing ring 201 to be conveniently placed in a designated position inside the pipe pile body 1. When the water-swellable sealing ring 201 absorbs water and expands, its volume gradually increases, which allows the outer surface of the water-swellable sealing ring 201 to fit tightly against the inner wall of the pipe pile body 1. This ensures that the steel support plate 203 can be easily placed inside the pipe pile body 1, while also eliminating any gaps that may exist between the steel support plate 203 and the pipe pile body 1. This effectively prevents grout leakage during the pouring of the concrete core 3.

[0024] Example 2: As attached Figure 2 With appendix Figure 3 As shown, based on Embodiment 1, the reinforcing cage structure 4 includes: vertical reinforcing bars 401 and reinforcing rings 402. The vertical reinforcing bars 401 are welded to the top of the steel support plate 203 and are arranged in a ring with uniform intervals. The reinforcing rings 402 are welded between the vertical reinforcing bars 401 and are arranged in a vertical direction with uniform intervals, and the bottommost reinforcing ring 402 is welded to the top of the steel support plate 203. The grout-free component 2 also includes: a reinforcing ring 204, which is welded to the top of the steel support plate 203 and is securely connected to the vertical reinforcing bars 401 using a full welding process. The reinforcing cage structure 4 also includes: reinforcing bars 403, which are welded between the outer sides of the vertical reinforcing bars 401 and are arranged in a spiral shape. The reinforcing rings 204 are welded to the top of the steel support plate 203 and are securely connected to the vertical reinforcing bars 401 using a full welding process, increasing the connection strength and reliability between the reinforcing cage structure 4 and the steel support plate 203.

[0025] Example 3: As attached Figure 4 To be continued Figure 6 As shown: Based on Embodiments 1 and 2, the fixing mechanism 5 includes: a fixing frame 501, a sliding seat 502, a circular hole 503, a hanging hook 504, a locking nut 505, a control seat 506, a threaded cylinder 507, and a limiting bolt 508. The fixing frame 501 is movably disposed on the top of the pipe pile body 1, and the fixing frame 501 is configured in a cross shape. The sliding seat 502 is slidably disposed inside the fixing frame 501 through a dovetail groove. The circular hole 503 is opened through the sliding seat 502. The hanging hook 504 is movably disposed inside the circular hole 503 and is movably disposed outside the topmost reinforcing bar ring 402. The locking nut 505 is disposed on the outside of the top of the hanging hook 504 through a threaded connection, and the bottom of the locking nut 505 is in contact with the top of the sliding seat 502. The control seat 506 is fixedly mounted on the top of the sliding seat 502, and the control seat 506 is slidably mounted on the outside of the fixing frame 501 via a dovetail groove. Both the control seat 506 and the sliding seat 502 are arranged in four sets at even intervals in a ring. The threaded cylinder 507 is fixedly mounted inside the control seat 506. The limiting bolt 508 is threadedly connected inside the threaded cylinder 507, with its bottom end tightly fitted to the top of the fixing frame 501. A knob is fixedly mounted on the top of the limiting bolt 508. By providing the sliding seat 502, the locking nut 505, and the hanging hook 504, the reinforcing bar ring 402 can be fixed between the sliding seat 502 and the hanging hook 504. Furthermore, the fixing mechanism 5 can be used to hang the leak-proof component 2 and the reinforcing cage structure 4 inside the pipe pile body 1.

[0026] The specific construction process of this embodiment is described below: In use, firstly, the vertical reinforcing bars 401, the reinforcing rings 402, and the reinforcing bars 403 are welded and fixed to form a reinforcing cage structure 4. Then, the annularly spaced vertical reinforcing bars 401 are welded and fixed to the steel support plate 203. The reinforcing ring 204 is then welded to the annularly spaced vertical reinforcing bars 401 using a full welding process. At the same time, the bottom reinforcing ring 402 is welded and fixed to the steel support plate 203. Then, the water-swellable sealing ring 201 is placed on the outside of the steel support plate 203 using the auxiliary groove 202. Next, the hanging hook 504 is placed inside the round hole 503, and the sliding seat 502 is pushed to move the hanging hook 504 to the outside of the top reinforcing ring 402. Then, the locking nut 505 is turned to move the hanging hook 504 upward, so that the top reinforcing ring 402 is fixed between the sliding seat 502 and the hanging hook 504. Then, rotate the limiting bolt 508 to make the bottom end of the limiting bolt 508 fit tightly against the top of the fixing frame 501, so that the sliding seat 502 is fixed in the designated position inside the fixing frame 501, and the reinforcing cage structure 4 and the grout-proof component 2 are fixed to the bottom of the fixing frame 501. Then, place the reinforcing cage structure 4 and the grout-proof component 2 inside the pipe pile body 1. The reinforcing cage structure 4 and the grout-proof component 2 are limited and hung by the fixing frame 501. Water is injected into the water-swellable sealing ring 201, so that the water-swellable sealing ring 201 absorbs water and expands, so that the outer surface of the water-swellable sealing ring 201 fits tightly against the inner wall of the pipe pile body 1, completely eliminating any gaps that may exist between the steel support plate 203 and the pipe pile body 1, and effectively preventing grout leakage of the concrete core 3 during the pouring process. Finally, concrete is injected into the pipe pile body 1 to form the concrete core 3. After the concrete core 3 is poured, rotate the locking nut 505 to remove the fixing mechanism 5.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prestressed concrete core filling device for pipe piles to prevent grout leakage, characterized in that, include: Pipe pile body (1); The grout-free component (2) is fixedly installed inside the pipe pile body (1), and a concrete core (3) is poured between the inner wall of the pipe pile body (1) and the top of the grout-free component (2). The steel cage structure (4) is fixedly installed on the top of the non-grouting component (2) and is installed inside the concrete core (3); Fixing mechanism (5), the fixing mechanism (5) is set on the top of the steel cage structure (4), and the fixing mechanism (5) is movably set on the top of the pipe pile body (1); The leak-proof component (2) includes: a water-swellable sealing ring (201), an auxiliary groove (202), and a steel support plate (203). The water-swellable sealing ring (201) is movably installed inside the pipe pile body (1), and the outer surface of the water-swellable sealing ring (201) is in contact with the inner wall of the pipe pile body (1). The auxiliary groove (202) is opened inside the water-swellable sealing ring (201), and the steel support plate (203) is embedded inside the auxiliary groove (202).

2. The prestressed concrete core filling device for prestressed pipe piles without leakage as described in claim 1, characterized in that: The steel cage structure (4) includes: vertical steel bars (401) and steel rings (402). The vertical steel bars (401) are welded to the top of the steel support plate (203) and are arranged in a ring with uniform intervals. The steel rings (402) are welded between the vertical steel bars (401) and are arranged in a vertical direction with uniform intervals. The bottom steel ring (402) is welded to the top of the steel support plate (203).

3. The prestressed concrete core filling device for prestressed pipe piles without leakage as described in claim 2, characterized in that: The leak-proof component (2) further includes a reinforcing ring (204), which is welded to the top of the steel support plate (203) and is fully welded to the vertical reinforcing bar (401).

4. The prestressed concrete core filling device for prestressed pipe piles without leakage as described in claim 3, characterized in that: The steel cage structure (4) further includes: reinforcing steel bars (403), which are welded to the outside of the vertical steel bars (401) and are arranged in a spiral shape.

5. The prestressed concrete core filling device for prestressed pipe piles without leakage as described in claim 2, characterized in that: The fixing mechanism (5) includes: a fixing frame (501), a sliding seat (502), a round hole (503), a hook (504), and a locking nut (505). The fixing frame (501) is movably installed on the top of the pipe pile body (1) and is cross-shaped. The sliding seat (502) is slidably installed inside the fixing frame (501) through a dovetail groove. The round hole (503) is through-hole installed inside the sliding seat (502). The hook (504) is movably installed inside the round hole (503) and is movably installed outside the top steel ring (402). The locking nut (505) is threadedly installed on the outside of the top of the hook (504) and the bottom of the locking nut (505) is in contact with the top of the sliding seat (502).

6. The prestressed concrete core filling device for prestressed pipe piles without leakage as described in claim 5, characterized in that: The fixing mechanism (5) further includes: a control seat (506), a threaded cylinder (507), and a limiting bolt (508). The control seat (506) is fixedly installed on the top of the sliding seat (502), and the control seat (506) is slidably installed on the outside of the fixing frame (501) through a dovetail groove. The threaded cylinder (507) is fixedly installed inside the control seat (506). The limiting bolt (508) is installed inside the threaded cylinder (507) through a threaded connection, and the bottom end of the limiting bolt (508) is tightly fitted with the top of the fixing frame (501). A knob is fixedly installed on the top end of the limiting bolt (508).

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