Pre-stressed pipe pile bottom floating fixing and sealing device

Abstract

The utility model relates to the technical field of prestressed pipe piles, and discloses a prestressed pipe pile bottom floating fixing and sealing device which comprises a pipe pile, pipe pile connecting pieces are fixedly installed at the upper end and the lower end of the pipe pile respectively, an anti-floating component is arranged at the bottom of the pipe pile, and the anti-floating component comprises a first anti-floating assembly arranged at the bottom of the pipe pile and a second anti-floating assembly arranged at the bottom of the pipe pile. The first anti-floating assembly is composed of a bottom plate and a first welding piece, the first welding piece is fixedly installed at the top of the bottom plate, the first welding piece is installed at the bottom of a pipe pile connecting piece at the lower end of a pipe pile in a welded mode, an expansion groove is formed in the bottom plate, and an expansion piece is movably installed in the expansion groove; by installing the pipe piles, the bottom plate, the expansion grooves, the expansion pieces, the empty grooves, the protruding blocks, the rotating rods and the like, the anti-floating capacity is high, the floating possibility caused by the influence of surrounding piles during pile group driving is reduced, and the floating amplitude of the piles is reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed pipe piles, in particular to a prestressed pipe pile bottom floating and sealing device. Background Art

[0002] Prestressed concrete piles, also known as prestressed concrete pipe piles, are a type of precast concrete pile. They feature high single-pile bearing capacity, low unit bearing capacity cost, fast construction speed, and reliable pile quality. They are generally suitable for soft soil, clay, silt, sandy soil, and fully weathered rock formations, and are widely used in construction, railways, highways, bridges, ports, docks, and other projects.

[0003] Precast piles are a commonly used pile foundation, but during the construction process, precast piles sometimes float up. Especially when piles are driven in groups, due to the large number of surrounding piles, adjacent piles may float up significantly. The floating of pipe piles will affect the bearing capacity of the pile foundation, increase the risk of settlement, and may even cause structural safety problems. Existing pipe piles are usually controlled to float up by static pressure and hammering methods after floating. However, these methods have the problems of high construction cost and long time consumption, and it is difficult to ensure the construction quality. Therefore, there is an urgent need to improve the anti-floating ability of existing prestressed pipe piles.

[0004] Therefore, a prestressed pipe pile bottom floating sealing device is specially proposed. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the utility model provides a prestressed pipe pile bottom floating and sealing device with strong anti-floating ability, reducing the possibility of floating due to the influence of surrounding piles when the pile group is installed, and greatly reducing the floating amplitude of the piles, thus solving the problem that prestressed pipe piles are easily affected by the surrounding piles when they are installed and float significantly.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a prestressed pipe pile bottom floating and sealing device, comprising a pipe pile, wherein pipe pile connectors are fixedly mounted at the upper and lower ends of the pipe pile, and an anti-floating component is provided at the bottom of the pipe pile, wherein the anti-floating component includes a first anti-floating assembly provided at the bottom of the pipe pile;

[0007] The first anti-floating component consists of a base plate and a first welding piece, the first welding piece is fixedly installed on the top of the base plate, and the first welding piece is welded to the bottom of the pipe pile joint at the lower end of the pipe pile. An expansion slot is opened inside the base plate, and an expansion piece is movably installed inside the expansion slot. An empty slot is opened on the surface of the expansion piece, and a protrusion is movably installed inside the expansion slot. The top of the protrusion is fixedly connected to a rotating rod.

[0008] Preferably, a second pouring hole is provided on the surface of the first welding plate, the second pouring hole passes through the bottom plate below the first welding plate and extends into the expansion slot, the surfaces of the pipe pile connecting pieces installed at the upper and lower ends of the pipe pile are both provided with a first pouring hole, and the first pouring hole passes through the pipe pile, and the first pouring hole is aligned with the second pouring hole.

[0009] Preferably, the protrusion is located in the empty groove, and the rotating rod on the top of the protrusion passes through the second pouring hole and the first pouring hole above.

[0010] Preferably, when the expansion piece is retracted in the expansion slot, the protrusion of the protrusion faces the center of the bottom plate.

[0011] Preferably, the anti-floating component also includes a second anti-floating assembly fixedly installed on the bottom of the base plate, the second anti-floating assembly consists of a bucket-shaped block and a bottom column, the bucket-shaped block is fixedly installed on the bottom of the base plate, a first leakage hole is opened on the ring side of the bucket-shaped block, and a first soil shielding plate is fixedly installed at the bottom edge of the base plate.

[0012] Preferably, the bottom column is fixedly mounted on the bottom of the bucket-shaped block, a second leakage hole is opened on the annular side of the bottom column, a spacer is fixedly mounted on the annular side of the bottom column, and a second soil shielding plate is fixedly mounted on the bottom edge of the spacer.

[0013] Preferably, the second anti-floating component is conical as a whole, two groups of spacers are provided, the diameter of the upper spacer is larger than that of the lower spacer, the second leakage hole is located below the spacer, and the bottom column and the bucket-shaped block are hollow and communicate with the interior of the bottom plate.

[0014] Preferably, reinforcing plates are fixedly installed between the two groups of spacers and between the upper spacer and the bottom plate, and the first soil-covering plate and the second soil-covering plate installed at the lower ends of the bottom plate and the spacers are both buckled inwards.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This prestressed pipe pile bottom floating and sealing device has a strong anti-floating ability by installing pipe piles, bottom plates, expansion slots, expansion pieces, empty slots, protrusions, rotating rods and other devices, reducing the possibility of floating due to the influence of surrounding piles during pile driving and greatly reducing the floating amplitude of the piles.

[0017] 2. This prestressed pipe pile bottom floating and sealing device, by installing a bucket-shaped block, a first leakage hole, a first soil cover, a bottom column, a second leakage hole, a spacer, a second soil cover and other devices, can make the concrete take a stepped shape after solidification, thereby expanding the overall volume of the second anti-floating component. The stepped concrete blocks are used to improve the floating resistance, further enhance the grip of the anti-floating component, and further prevent the pipe pile from being affected by the installation of surrounding pipe piles and causing floating problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the prestressed pipe pile of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the anti-floating component of the utility model;

[0021] Figure 3 This is a schematic diagram of the partial cross-sectional structure of the anti-floating component of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal planar structure of the bottom plate of the utility model;

[0023] Figure 5 This is a schematic diagram of the expansion piece structure of the utility model.

[0024] Description of reference numerals:

[0025] 1. Pipe pile; 11. Pipe pile joint; 12. First pouring hole; 2. Anti-floating component; 21. First anti-floating assembly; 211. Bottom plate; 212. First welding piece; 213. Second pouring hole; 214. Extension slot; 215. Extension piece; 216. Empty slot; 217. Protrusion; 218. Rotating rod; 22. Second anti-floating assembly; 221. Bucket block; 222. First leakage hole; 223. First earth shielding plate; 224. Bottom column; 225. Second leakage hole; 226. Spacer; 227. Second earth shielding plate; 228. Reinforcement plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 5 , the utility model provides a technical solution:

[0028] A prestressed pipe pile bottom floating sealing device includes a pipe pile 1, wherein pipe pile connectors 11 are fixedly installed at the upper and lower ends of the pipe pile 1, and an anti-floating component 2 is provided at the bottom of the pipe pile 1. The anti-floating component 2 includes a first anti-floating component 21 provided at the bottom of the pipe pile 1, and the first anti-floating component 21 is composed of a bottom plate 211 and a first welding piece 212. The first welding piece 212 is fixedly installed on the top of the bottom plate 211, and the first welding piece 212 is welded to the bottom of the pipe pile connector 11 at the lower end of the pipe pile 1. An expansion slot 214 is provided inside the bottom plate 211, and an expansion piece 215 is movably installed inside the expansion slot 214. An empty slot 216 is provided on the surface of the expansion piece 215, and a protrusion 217 is movably installed inside the expansion slot 214. The top of the protrusion 217 is fixedly connected to a rotating rod 218.

[0029] A second pouring hole 213 is provided on the surface of the first welding piece 212, and the second pouring hole 213 passes through the bottom plate 211 below the first welding piece 212 and extends into the expansion slot 214. The surfaces of the pipe pile connectors 11 installed at the upper and lower ends of the pipe pile 1 are both provided with first pouring holes 12, and the first pouring holes 12 pass through the pipe pile 1. The first pouring holes 12 are aligned with the second pouring holes 213, and the protrusion 217 is located in the empty slot 216. The rotating rod 218 on the top of the protrusion 217 passes through the second pouring hole 213 and the first pouring hole 12 above. When the expansion piece 215 is retracted in the expansion slot 214, the protrusion of the protrusion 217 faces the center of the bottom plate 211.

[0030] By adopting the above technical solution, when in use, first weld the first welding piece 212 to the pipe pile connecting piece 11 at the bottom of the pipe pile 1. When welding the first welding piece 212, it is necessary to pay attention to aligning the second pouring hole 213 opened on the surface of the first welding piece 212 with the first pouring hole 12, and insert the rotating rod 218 extending from the second pouring hole 213 into the first pouring hole 12. After welding is completed, the top of the rotating rod 218 extends out of the first pouring hole 12. When piling is carried out, the excess part of the rotating rod 218 extending from the surface of the first pouring hole 12 can be cut off so that it does not affect the subsequent piling work, and it is ensured that the rotating rod 218 in the first pouring hole 12 can be clamped with the help of a tool. After the pipe pile 1 is driven into the soil, the anti-floating component 2 is completely immersed in the ground. At this time, the rotating rod 218 is clamped with the help of a tool and rotated. When the rotating rod 218 is rotated, the rotating rod 218 drives the protrusion 217 in the bottom empty groove 216 to rotate. When the protrusion 217 is not rotated, the expansion piece 21 5 is received in the expansion slot 214, and the protrusion of the protrusion 217 is directed toward the center of the bottom plate 211. The protrusion 217 is rotated to change the protrusion of the protrusion 217, and the expansion piece 215 is pushed out from the expansion slot 214 in conjunction with the empty slot 216. At this time, the expansion piece 215 extends out of the expansion slot 214. The expansion slot 214 is connected to the interior of the bottom plate 211. Concrete is poured from the first pouring hole 12 and flows into the expansion slot 214. Then, the concrete passes through the expansion slot 214 and the expansion piece 215. 15, and after the concrete solidifies, the expansion piece 215 is fixed and fixed to the surrounding soil, thereby improving the stability of the bottom of the pipe pile 1 after it goes deep into the ground. Since the expansion piece 215 extends from the expansion groove 214 and is inserted into the soil, and is then fixed by concrete, its grip is improved and the difficulty of the bottom plate 211 floating upward is improved, thereby reducing the impact on the surrounding pipe piles 1 during the pile group driving, and can effectively reduce the floating amplitude of the pipe pile 1 affected by the driving of the surrounding pipe piles 1.

[0031] Specifically, such as Figures 2 to 3As shown, the anti-floating component 2 also includes a second anti-floating component 22 fixedly mounted on the bottom of the bottom plate 211. The second anti-floating component 22 consists of a bucket-shaped block 221 and a bottom column 224. The bucket-shaped block 221 is fixedly mounted on the bottom of the bottom plate 211. A first leakage hole 222 is opened on the ring side of the bucket-shaped block 221. A first soil shielding plate 223 is fixedly mounted on the bottom edge of the bottom plate 211. The bottom column 224 is fixedly mounted on the bottom of the bucket-shaped block 221. A second leakage hole 225 is opened on the ring side of the bottom column 224. A spacer 226 is fixedly mounted on the ring side of the bottom column 224. The bottom of the spacer 226 A second soil shielding plate 227 is fixedly installed at the edge. The second anti-floating component 22 is conical as a whole. Two groups of spacers 226 are provided. The diameter of the upper spacer 226 is larger than that of the lower spacer 226. The second leakage hole 225 is located below the spacer 226. The bottom column 224 and the bucket-shaped block 221 are hollow and communicate with the interior of the bottom plate 211. Reinforcing plates 228 are fixedly installed between the two groups of spacers 226 and between the upper spacer 226 and the bottom plate 211. The first soil shielding plate 223 and the second soil shielding plate 227 installed at the lower ends of the bottom plate 211 and the spacer 226 are both buckled inward.

[0032] By adopting the above technical solution, a second anti-floating component 22 is also installed at the bottom of the first anti-floating component 21. The second anti-floating component 22 is tapered as a whole, which is conducive to the driving of the pipe pile 1. When driving the pile, the bottom of the second anti-floating component 22 first contacts the ground and then penetrates into the soil. The second anti-floating component 22 is fixed to the bottom of the bottom plate 211 through the bucket-shaped block 221, and the bottom column 224 is fixed to the bottom of the bucket-shaped block 221. When the bottom column 224 penetrates into the soil, the second soil-shielding plate 227 at the bottom of the spacer 226 and the first soil-shielding plate 223 at the bottom of the bottom plate 211 are inwardly buckled because they face inward, which can break the soil and make the soil fill as little as possible into the gap between the two groups of spacers 226 and the gap between the spacer 226 and the bottom plate 211. Even if a large amount of soil is filled in the gap between the two groups of spacers 226 and the gap between the spacer 226 and the bottom plate 211, the first soil-shielding plate 223 and the second soil-shielding plate 227 The first leakage hole 222 and the second leakage hole 225 can also be blocked. After the pipe pile 1 is driven, concrete is injected through the first pouring hole 12. The concrete first flows into the expansion groove 214, then flows into the bucket-shaped block 221 and the bottom column 224 through the expansion groove 214, and finally flows out through the first leakage hole 222 and the second leakage hole 225, filling the two groups of spacers 226 and the gap between the spacers 226 and the bottom plate 211, and diffuses and mixes around the entire second anti-floating component 22. Because the second anti-floating component 22 is tapered as a whole, two groups of spacers 226 are installed on the surface of the bottom column 224, and a separate concrete outlet is provided. Due to the setting of the spacers 226, the concrete can be stepped after solidification, further improving the grip of the anti-floating component 2. At the same time, the reinforcing plate 228 can also improve the structural strength of the anti-floating component 2, further preventing the pipe pile 1 from floating due to the influence of the driving of the surrounding pipe piles 1.

[0033] Working principle: When in use, the anti-floating component 2 is first welded to the bottom of the pipe pile 1. When welding, the rotating rod 218 is first inserted into the first pouring hole 12. The excess part of the rotating rod 218 can be cut during installation, but it is necessary to ensure that the rotating rod 218 can be clamped when using tools. After the pipe pile 1 is driven into the soil, the anti-floating component 2 is completely immersed in the ground. At this time, the rotating rod 218 is clamped and rotated with the help of a tool. When the rotating rod 218 rotates, it drives the bottom protrusion 217 to rotate. When the protrusion 217 rotates, it pushes the expansion piece 215 out of the expansion groove 214 and inserts it into the surrounding soil. Then concrete is injected through the first pouring hole 12. The concrete flows into the expansion groove 214 through the pipe pile 1 and flows out through the gap between the expansion groove 214 and the expansion piece 215. Mixed with the surrounding soil, excess concrete flows into the bucket-shaped block 221 and the bottom column 224. When the space inside the bottom column 224 and the bucket-shaped block 221 is filled with concrete, the concrete flows out from the second leakage hole 225 and the first leakage hole 222 and mixes with the surrounding soil. After the concrete solidifies, the expansion piece 215 is fixed and solidifies the surrounding soil, thereby expanding the cross-section of the bottom plate 211, making it more difficult for the pipe pile 1 to float. The solidified concrete in the gap between the two sets of spacers 226 and the spacers 226 and the bottom plate 211 will also be stepped and solidify with the surrounding soil, further increasing the difficulty of the pipe pile 1 to float. With the help of the setting of the anti-floating component 2, the stability of the pipe pile 1 after installation is greatly improved, and the extent of the pipe pile 1 being affected and floating is greatly reduced.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prestressed pipe pile bottom floating sealing device, comprising a pipe pile (1), characterized in that: The upper and lower ends of the pipe pile (1) are both fixedly mounted with pipe pile connectors (11); the bottom of the pipe pile (1) is provided with an anti-floating component (2); the anti-floating component (2) comprises a first anti-floating component (21) provided at the bottom of the pipe pile (1); The first anti-floating component (21) is composed of a bottom plate (211) and a first welding piece (212). The first welding piece (212) is fixedly mounted on the top of the bottom plate (211). The first welding piece (212) is welded to the bottom of the pipe pile connector (11) at the lower end of the pipe pile (1). An expansion slot (214) is provided inside the bottom plate (211). An expansion piece (215) is movably mounted inside the expansion slot (214). An empty slot (216) is provided on the surface of the expansion piece (215). A protrusion (217) is movably mounted inside the expansion slot (214). A rotating rod (218) is fixedly connected to the top of the protrusion (217).

2. The prestressed pipe pile bottom floating sealing device according to claim 1, characterized in that: A second pouring hole (213) is provided on the surface of the first welding piece (212), and the second pouring hole (213) passes through the bottom plate (211) below the first welding piece (212) and extends into the expansion slot (214). The surfaces of the pipe pile connecting pieces (11) installed at the upper and lower ends of the pipe pile (1) are both provided with a first pouring hole (12), and the first pouring hole (12) passes through the pipe pile (1), and the first pouring hole (12) is aligned with the second pouring hole (213).

3. The prestressed pipe pile bottom floating and sealing device according to claim 1, characterized in that: The protrusion (217) is located in the empty groove (216), and the rotating rod (218) on the top of the protrusion (217) passes through the second pouring hole (213) and the first pouring hole (12) above.

4. The prestressed pipe pile bottom floating and sealing device according to claim 3, characterized in that: When the expansion piece (215) is retracted in the expansion slot (214), the protrusion of the projection (217) faces the center of the bottom plate (211).

5. The prestressed pipe pile bottom floating and sealing device according to claim 1, characterized in that: The anti-floating component (2) further comprises a second anti-floating assembly (22) fixedly mounted on the bottom of the bottom plate (211), the second anti-floating assembly (22) consisting of a bucket-shaped block (221) and a bottom column (224), the bucket-shaped block (221) being fixedly mounted on the bottom of the bottom plate (211), a first leakage hole (222) being provided on the annular side of the bucket-shaped block (221), and a first soil shielding plate (223) being fixedly mounted on the bottom edge of the bottom plate (211).

6. The prestressed pipe pile bottom floating and sealing device according to claim 5, characterized in that: The bottom column (224) is fixedly mounted on the bottom of the bucket-shaped block (221); a second leakage hole (225) is opened on the annular side of the bottom column (224); a spacer (226) is fixedly mounted on the annular side of the bottom column (224); and a second soil shielding plate (227) is fixedly mounted on the bottom edge of the spacer (226).

7. The prestressed pipe pile bottom floating and sealing device according to claim 6, characterized in that: The second anti-floating component (22) is tapered as a whole, and two groups of spacers (226) are provided. The diameter of the upper spacer (226) is larger than that of the lower spacer (226). The second leakage hole (225) is located below the spacer (226). The interiors of the bottom column (224) and the bucket-shaped block (221) are both hollow and communicate with the interior of the bottom plate (211).

8. The prestressed pipe pile bottom floating and sealing device according to claim 6, characterized in that: A reinforcing plate (228) is fixedly installed between the two groups of spacers (226) and between the upper spacer (226) and the bottom plate (211). The first soil shielding plate (223) and the second soil shielding plate (227) installed at the lower ends of the bottom plate (211) and the spacer (226) are both buckled inwards.

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