High-strength anti-corrosion pipe pile for foundation

Abstract

The utility model provides a high-strength anti-corrosion pipe pile for a foundation. The high-strength anti-corrosion pipe pile comprises a pile body, end plates and hoops. Two circles of reinforcement cages are embedded in the pile body, longitudinal reinforcements of the inner circle of reinforcement cage are prestressed reinforcements, and longitudinal reinforcements of the outer circle of reinforcement cage are non-prestressed reinforcements; end plates are arranged at the upper end and the lower end of the pile body, and waterproof anti-corrosion coatings are arranged on the outer walls of the pile body and the end plates; a circle of clamping groove is formed in the outer side face of the end plate. The hoop is of a detachable structure and is formed by butt joint of two semi-annular hoops. The upper end and the lower end of the inner side face of the semicircular clamp are provided with semicircular clamping blocks capable of being clamped into the clamping grooves, and an embedding groove is formed between the clamping blocks at the upper end and the lower end. A protective layer is embedded in the caulking groove and comprises a waterproof layer, a soft buffer layer and an anti-corrosion layer which are sequentially arranged in the radial direction to the circle center direction; and the hoop is clamped in the clamping grooves of the end plates of the upper and lower sections of pipe piles through the clamping blocks at the upper and lower ends. The high-strength anti-corrosion pipe pile for the foundation is high in vertical bearing capacity, high in horizontal bending resistance and shear resistance and good in anti-corrosion performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe piles, in particular to a high-strength anti-corrosion pipe pile for foundations. Background Art

[0002] Concrete pipe piles have the advantages of low production cost, ability to withstand large loads, durability, fast construction speed, simple construction, and low technical difficulty. They are widely used in the construction of buildings, roads, bridges, docks and other projects. During the construction process, it is often necessary to use welding or mechanical structure connection to connect multiple pipe piles in sequence. After the pipe piles are buried underground, the welds or mechanical component connections are exposed to the underground environment and are easily corroded and rusted. Therefore, anti-corrosion treatment is required. The existing anti-corrosion method is generally to apply a layer of anti-corrosion coating. Since the welds and mechanical component connections are porous and have many gaps, this method has limited anti-corrosion effect. At the same time, during the pile sinking process, the anti-corrosion coating is easily scratched and worn, which will also affect the anti-corrosion effect. In addition, the mechanical properties of pipe piles used as foundations also need to be further optimized and improved. Utility Model Content

[0003] In view of this, in order to solve the above technical problems, the utility model proposes a high-strength anti-corrosion pipe pile for foundation with strong vertical bearing capacity, high horizontal bending and shearing capacity, and good corrosion resistance.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A high-strength anti-corrosion pipe pile for foundation, comprising:

[0006] A pile body, wherein a steel cage is embedded inside the pile body, the steel cage comprising a plurality of longitudinal steel bars distributed at equal intervals along the circumference and a plurality of ring steel bars wound and welded around the longitudinal steel bars; the steel cage is provided with two layers, the longitudinal steel bars located in the inner ring are prestressed steel bars, and the longitudinal steel bars located in the outer ring are non-prestressed steel bars; the outer wall of the pile body is provided with a waterproof and anti-corrosion coating;

[0007] End plates are provided at both ends of the pile body, and the outer wall of the end plate is provided with a waterproof and anti-corrosion coating; the outer side surface of the end plate is provided with a circle of inwardly concave grooves;

[0008] The clamp is a detachable structure formed by connecting two semi-annular clamps; the upper and lower ends of the inner side surface of the semi-annular clamp are provided with semi-annular clamping blocks that can be clamped into the clamping groove, and a groove is formed between the clamping blocks at the upper and lower ends; a protective layer is embedded in the clamping groove, and the protective layer includes a waterproof layer, a soft buffer layer, and an anti-corrosion layer arranged in sequence along the radial direction toward the center of the circle; the clamp can be clamped into the clamping groove of the end plates of the upper and lower sections of the pipe pile through the clamping blocks at the upper and lower ends.

[0009] A double-layer steel cage structure is used in the pile body to increase the reinforcement ratio, thereby improving the overall mechanical properties; prestressed steel bars are used in the inner ring to enhance the vertical bearing capacity of the pipe pile; non-prestressed steel bars are used in the outer ring to improve the horizontal bending and shearing capacity of the pipe pile; the pile body and the outer wall of the end plate are coated with a waterproof and anti-corrosion coating, and the gap at the joint of the two sections of the pipe pile is reinforced with a clamp. The clamp covers the joint and seals the joint to prevent the porous structure from being exposed to corrosion in the underground environment. At the same time, a protective layer is formed by multi-layer superposition of a waterproof layer, a soft buffer layer, and an anti-corrosion layer. During the jointing process of the two semi-annular clamps, the soft buffer layer is squeezed by the outside, which can make the protective layer tightly adhere to the joint of the pipe pile end plate, playing a good sealing role.

[0010] Furthermore, a sealing ring is provided in the card slot.

[0011] Furthermore, a docking plate is provided at the docking end of the semi-annular clamp, and a bolt hole is provided on the docking plate. The docking plates of the two semi-annular clamps are docked and fixed by inserting bolts into the bolt holes and then tightening them with nuts.

[0012] After the two semi-annular clamps are inserted into the clamping grooves, they are butted together to form a ring. The butt joint plates of the two semi-annular clamps correspond to each other. Bolts are inserted into the bolt holes and nuts are screwed in to make the butt joint plates of the two semi-annular clamps fit tightly.

[0013] Furthermore, the two semi-annular clamps are semi-annular clamp A and semi-annular clamp B respectively; the protective layer of the semi-annular clamp A is longer than its embedding groove, and both ends extend from its embedding groove; the protective layer of the semi-annular clamp B is shorter than its embedding groove; after the semi-annular clamp A and the semi-annular clamp B are docked, the two ends of the protective layer of the semi-annular clamp A are embedded in the two ends of the embedding groove of the semi-annular clamp B.

[0014] In order to avoid the existence of a gap at the joint of the two semi-annular clamps, the protective layers of the two semi-annular clamps are set to different lengths. The two ends of the protective layer of the semi-annular clamp A extend out and can be inserted into the embedding groove of the semi-annular clamp B after jointing, thereby solving the problem of the joint gap.

[0015] Furthermore, the waterproof layer is an asphalt waterproof layer, which plays the role of waterproofing and bonding; the soft buffer layer is a rubber buffer layer; and the anti-corrosion layer is a non-woven fabric layer immersed in petrolatum containing corrosion inhibitors.

[0016] Furthermore, the top and bottom of the clamp are provided with a resistance reducing member having a cone-shaped structure with a vertical cross-section of a right-angled triangle, which can reduce the resistance when the pipe pile is driven into the foundation.

[0017] Compared with the prior art, the high-strength anti-corrosion pipe piles for foundation described in the utility model have the following advantages:

[0018] The high-strength anti-corrosion pipe piles for foundation described in the utility model adopt a double-layer steel cage structure, which improves the reinforcement ratio. The inner ring adopts prestressed steel bars to enhance the vertical bearing capacity of the pipe piles. The outer ring adopts non-prestressed steel bars to improve the horizontal bending and shearing resistance of the pipe piles, thereby improving the overall mechanical properties of the pipe piles. At the same time, a waterproof and anti-corrosion coating is applied to the outer wall of the pile body and the end plate, and then the joints of the two sections of the pipe piles are strengthened with anti-corrosion treatment, and the joints are covered with clamps to prevent the porous structure from being exposed to corrosion in the underground environment. At the same time, a protective layer is formed by multi-layer superposition of a waterproof layer, a soft buffer layer, and an anti-corrosion layer, which effectively improves the corrosion resistance of the pipe piles and extends the service life of the pipe piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic structural diagram of the high-strength anti-corrosion pipe pile for foundation according to Example 1 of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of the pile body described in Example 1 of the present utility model;

[0022] Figure 3 This is a partial enlarged view of the clamp described in Example 1 of the present utility model;

[0023] Figure 4 This is a schematic diagram of the top view of the clamp described in Example 1 of the utility model;

[0024] Figure 5 This is a schematic diagram of the exploded structure of the clamp described in Example 1 of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the foundation after being connected with high-strength anti-corrosion pipe piles according to Example 1 of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure after the foundation described in Example 2 of the utility model is connected with high-strength anti-corrosion pipe piles.

[0027] Description of reference numerals:

[0028] 1-pile body, 2-end plate, 3-clamp, 4-ring steel bar, 5-prestressed steel bar, 6-non-prestressed steel bar, 7-slot, 8-sealing ring, 9-butt plate, 10-block, 11-pipe pile, 12-groove, 13-protective layer, 14-semi-annular clamp A, 15-semi-annular clamp B, 16-waterproof layer, 17-soft buffer layer, 18-anti-corrosion layer, 19-resistance reduction component. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] Example 1

[0034] like Figures 1 to 6 As shown, a high-strength anti-corrosion pipe pile for foundation includes a pile body 1, an end plate 2, and a clamp 3;

[0035] The pile body 1 is a concrete pile body with a steel cage embedded inside. The steel cage includes a plurality of longitudinal steel bars distributed at equal intervals along the circumference and a plurality of ring steel bars 4 wound and welded around the longitudinal steel bars. The steel cage is provided with two layers. The longitudinal steel bars located in the inner ring are prestressed steel bars 5, and the longitudinal steel bars located in the outer ring are non-prestressed steel bars 6. The outer wall of the pile body 1 is provided with a waterproof and anti-corrosion coating.

[0036] The upper and lower ends of the pile body 1 are provided with end plates 2, and the outer wall of the end plate 2 is provided with a waterproof and anti-corrosion coating; the outer side surface of the end plate 2 is provided with a circle of inwardly concave grooves 7, and a sealing ring 8 is provided in the groove 7;

[0037] The clamp 3 is a detachable structure, which is formed by the butt joint of two semi-annular clamps. The butt joint end of the semi-annular clamp is provided with a butt joint plate 9, and a bolt hole is provided on the butt joint plate 9. The butt joint plates 9 of the two semi-annular clamps are fixed by inserting bolts into the bolt holes and then tightening them with nuts; the upper and lower ends of the inner side of the semi-annular clamp are provided with semi-annular clamping blocks 10 that can be inserted into the clamping groove 7. The clamp 3 can be clamped into the clamping groove 3 of the end plate 2 of the upper and lower sections of the pipe pile 11 through the clamping blocks 10 at the upper and lower ends; an embedding groove 12 is formed between the clamping blocks 10 at the upper and lower ends, and a protective layer 13 is embedded in the embedding groove 12; the two semi-annular clamps are semi-annular clamp A14 and semi-annular clamp A15. Annular clamp B15; the protective layer 13 of the semi-annular clamp A14 is longer than its embedding groove 12, and both ends extend from its embedding groove 12; the protective layer 13 of the semi-annular clamp B15 is shorter than its embedding groove 12; after the semi-annular clamp A14 and the semi-annular clamp B are docked, the two ends of the protective layer of the semi-annular clamp A are embedded in the two ends of the embedding groove of the semi-annular clamp B; the protective layer 13 includes a waterproof layer 16, a soft buffer layer 17, and an anti-corrosion layer 18 arranged in sequence along the radial direction toward the center of the circle, the waterproof layer 16 is an asphalt waterproof layer, the soft buffer layer 17 is a rubber buffer layer, and the anti-corrosion layer 18 is a non-woven fabric layer immersed in petrolatum containing corrosion inhibitors.

[0038] The working principle of the high-strength anti-corrosion pipe pile for foundation described in this embodiment is:

[0039] Insert the two semi-annular clamps into the clamping grooves 7 of the end plates 2 at the joint of the two sections of pipe piles 11, and the docking plates 9 of the two semi-annular clamps correspond. At this time, insert the bolts into the bolt holes and screw in the nuts. In the process of tightening the nuts, the two semi-annular clamps are compressed, and the corresponding docking plates 9 fit tightly to complete the assembly of the clamps 3; due to the presence of the soft buffer layer 17 in the protective layer 13, the protective layer 13 is tightly attached to the docking gap of the two sections of pipe piles 11, which plays a good sealing role, and at the same time cooperates with the waterproof layer 16 and the anti-corrosion layer 18 to enhance the corrosion resistance of the gap; in addition, the outer walls of the pile body 1 and the end plate 2 are coated with a waterproof and anti-corrosion coating to achieve overall anti-corrosion protection.

[0040] Example 2

[0041] like Figure 7 As shown, based on Example 1, the difference from Example 1 is that the top and bottom of the clamp 3 are provided with a ring-conical structure resistance reducing member 19 with a vertical cross-section of a right-angled triangle, which can reduce the resistance during the process of driving the pipe pile into the foundation.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-strength anti-corrosion pipe pile for foundation, characterized in that ,include: A pile body, wherein a steel cage is embedded inside the pile body, the steel cage comprising a plurality of longitudinal steel bars distributed at equal intervals along the circumference and a plurality of ring steel bars wound and welded around the longitudinal steel bars; the steel cage is provided with two layers, the longitudinal steel bars located in the inner ring are prestressed steel bars, and the longitudinal steel bars located in the outer ring are non-prestressed steel bars; the outer wall of the pile body is provided with a waterproof and anti-corrosion coating; End plates are provided at both ends of the pile body, and the outer wall of the end plate is provided with a waterproof and anti-corrosion coating; the outer side surface of the end plate is provided with a circle of inwardly concave grooves; The clamp is a detachable structure formed by connecting two semi-annular clamps; the upper and lower ends of the inner side surface of the semi-annular clamp are provided with semi-annular clamping blocks that can be clamped into the clamping groove, and a groove is formed between the clamping blocks at the upper and lower ends; a protective layer is embedded in the clamping groove, and the protective layer includes a waterproof layer, a soft buffer layer, and an anti-corrosion layer arranged in sequence along the radial direction toward the center of the circle; the clamp can be clamped into the clamping groove of the end plates of the upper and lower sections of the pipe pile through the clamping blocks at the upper and lower ends.

2. The high-strength anti-corrosion pipe pile for foundation according to claim 1, characterized in that: A sealing ring is provided in the card slot.

3. The high-strength anti-corrosion pipe pile for foundation according to claim 1, characterized in that: The butt joint ends of the semi-annular clamps are provided with butt joint plates, which are provided with bolt holes. The butt joint plates of the two semi-annular clamps are butt-jointed and fixed by inserting bolts into the bolt holes and then tightening them with nuts.

4. The high-strength anti-corrosion pipe pile for foundation according to claim 1, characterized in that: The two semi-annular clamps are semi-annular clamp A and semi-annular clamp B. The protective layer of the semi-annular clamp A is longer than its embedding groove, and both ends extend from its embedding groove; the protective layer of the semi-annular clamp B is shorter than its embedding groove. After the semi-annular clamp A and the semi-annular clamp B are butt-jointed, the two ends of the protective layer of the semi-annular clamp A are embedded into the two ends of the embedding groove of the semi-annular clamp B.

5. The high-strength anti-corrosion pipe pile for foundation according to claim 1, characterized in that: The waterproof layer is an asphalt waterproof layer; the soft buffer layer is a rubber buffer layer; and the anti-corrosion layer is a non-woven fabric layer immersed in petrolatum containing a corrosion inhibitor.

6. The high-strength anti-corrosion pipe pile for foundation according to any one of claims 1 to 5, characterized in that: The top and bottom of the clamp are provided with a resistance reducing member having a ring-cone structure with a vertical cross section being a right-angled triangle.

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