High-strength fiber concrete pipe pile

Abstract

The utility model belongs to the technical field of concrete pipe piles, and particularly relates to a high-strength fiber concrete pipe pile which comprises a concrete pipe pile body, a fiber tensile layer is fixedly connected to the outer arc surface of the concrete pipe pile body, and a wear-resistant waterproof layer is fixedly connected to the outer arc surface of the fiber tensile layer. A strength supporting mechanism is arranged in the concrete pipe pile body. According to the high-strength fiber concrete pipe pile body, by arranging the fiber tensile layer, the anti-cracking performance of the concrete pipe pile body can be effectively improved, meanwhile, the concrete pipe pile body can be protected against corrosion of soil, and by arranging the wear-resistant waterproof layer, the fiber tensile layer can be protected and prevented from being worn; and meanwhile, water in soil can be prevented from influencing the fiber tensile layer, the arranged strength supporting mechanism provides support for the inner side wall of the concrete pipe pile body, and the strength of the concrete pipe pile body is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete pipe pile technology, and in particular to a high-strength fiber-reinforced concrete pipe pile. Background Technology

[0002] Concrete pipe piles are a type of precast engineering pile used as foundation materials for buildings. Under specific geological conditions, they are driven into the ground by a pile driver and play a role in bearing the load in buildings and structures. The main uses of pipe piles are twofold: one is to transfer the weight of the building above to the lower soil layer with high bearing capacity, thereby improving the stability of the building; the other is to compact soft soil layers, thereby improving the bearing capacity of the foundation soil. Using pipe piles can significantly reduce the cost of foundations, and the strength is also sufficient. Therefore, they are widely used in the foundation fields of railways, highways and bridges, ports, docks, water conservancy, municipal engineering, buildings and large equipment.

[0003] Existing concrete pipe pile materials are relatively simple and do not have good reinforcement functions. During the driving process, cracks are easily formed due to the inherent strength of the concrete pipe pile, which affects the service life of the concrete pipe pile. At the same time, since the bottom of the concrete pipe pile is in direct contact with the soil, it will accelerate the corrosion of the outer surface of the bottom of the concrete pipe pile, affecting the connection strength of the bottom of the concrete pipe pile. Utility Model Content

[0004] Based on the technical problems of existing concrete pipe piles being prone to cracking and accelerated corrosion of the bottom outer surface of the concrete pipe pile upon contact with soil, this utility model proposes a high-strength fiber-reinforced concrete pipe pile.

[0005] This utility model proposes a high-strength fiber-reinforced concrete pipe pile, including a concrete pipe pile body, a fiber tensile layer fixedly connected to the outer arc surface of the concrete pipe pile body, an anti-wear and waterproof layer fixedly connected to the outer arc surface of the fiber tensile layer, and a strength support mechanism provided inside the concrete pipe pile body.

[0006] Preferably, the fiber tensile layer is made of carbon fiber and is bonded to the outer surface of the concrete pipe pile body by a high-strength adhesive.

[0007] Preferably, the abrasion-resistant and waterproof layer is made of EPDM rubber waterproof membrane, and the abrasion-resistant and waterproof layer is bonded to the outer surface of the fiber tensile layer by a high-strength adhesive.

[0008] Preferably, the strength support mechanism includes an upper fixed shell, the inner top surface of which is in extrusive contact with the upper surface of the concrete pipe pile body, a fixing bolt threadedly connected to the upper surface of the upper fixed shell, the threaded end of the fixing bolt penetrating and extending to the lower part of the upper fixed shell, the threaded end of the fixing bolt also being threadedly connected to the upper part of the concrete pipe pile body, the inner sidewall of the upper fixed shell in extrusive contact with the wear-resistant and waterproof layer, the lower outer sidewall of the wear-resistant and waterproof layer in extrusive contact with a lower fixed shell, and the inner bottom surface of the lower fixed shell in extrusive contact with the lower surface of the concrete pipe pile body through the fixing bolt.

[0009] Preferably, the opposing surfaces of the upper fixed shell and the lower fixed shell are rotatably connected by a bidirectional screw via ball bearings. The upper end of the bidirectional screw passes through and extends out of the upper end of the upper fixed shell. A rotating nut is fixedly connected to the upper end of the bidirectional screw. A limit bolt is threadedly connected to the upper surface of the rotating nut. The lower threaded end of the limit bolt is also threadedly connected to the upper fixed shell.

[0010] Preferably, movable blocks are threadedly connected to the threaded surfaces on both sides of the bidirectional screw, and fixed blocks are fixedly connected to the lower surface of the upper fixed shell and the upper surface of the lower fixed shell, respectively. The outer surfaces of the two fixed blocks are rotatably connected to the arc surfaces at both ends of the bidirectional screw via ball bearings. Mounting blocks are fixedly connected to the opposite surfaces of the movable blocks and the fixed blocks, and mounting shafts are rotatably connected to the opposite surfaces of every two mounting blocks via ball bearings. A support rod is fixedly connected to the arc surface of the mounting shaft, and a support shaft is fixedly connected to the end of the support rod away from the mounting shaft. The two ends of the support shaft pass through and extend out from both sides of the support rod, and support blocks are rotatably connected to the two ends of the support shaft extending out from both sides of the support rod via ball bearings. A pressing block is fixedly connected to one side surface of every four support blocks, and one side surface of the pressing block is in pressing contact with the inner wall of the concrete pipe pile body.

[0011] The beneficial effects of this utility model are as follows:

[0012] By setting a fiber tensile layer, the crack resistance of the concrete pipe pile body can be effectively improved, and the concrete pipe pile body can be protected from soil corrosion. Setting an anti-wear and waterproof layer can protect the fiber tensile layer and prevent it from being worn, while also preventing water in the soil from affecting the fiber tensile layer. The set strength support mechanism provides support for the inner wall of the concrete pipe pile body, thereby improving the strength of the concrete pipe pile body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a high-strength fiber-reinforced concrete pipe pile proposed in this utility model;

[0014] Figure 2 This is a three-dimensional view of the fiber tensile layer structure of a high-strength fiber-reinforced concrete pipe pile proposed in this utility model;

[0015] Figure 3 This is a three-dimensional view of a bidirectional screw structure for a high-strength fiber-reinforced concrete pipe pile proposed in this utility model.

[0016] In the diagram: 1. Concrete pipe pile body; 2. Fiber tensile layer; 3. Wear-resistant and waterproof layer; 4. Upper fixing shell; 5. Fixing bolt; 6. Lower fixing shell; 7. Bidirectional screw; 8. Rotating nut; 9. Limiting bolt; 10. Moving block; 11. Fixing block; 12. Mounting block; 13. Mounting shaft; 14. Support rod; 15. Support shaft; 16. Support block; 17. Extrusion block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figures 1-3 A high-strength fiber reinforced concrete pipe pile includes a concrete pipe pile body 1, a fiber tensile layer 2 fixedly connected to the outer arc surface of the concrete pipe pile body 1, an anti-wear and waterproof layer 3 fixedly connected to the outer arc surface of the fiber tensile layer 2, and a strength support mechanism provided inside the concrete pipe pile body 1.

[0019] The fiber tensile layer 2, which is designed to improve the tensile properties of the concrete pipe pile body, is made of carbon fiber and is bonded to the outer surface of the concrete pipe pile body 1 with a high-strength adhesive.

[0020] By bonding carbon fiber cloth to the outer surface of the concrete pipe pile body 1, its strength is extremely high, reaching over 1600MPa, while its density is only 1 / 4 that of steel, giving it a significant lightweight advantage. It also has excellent corrosion resistance, remaining stable in harsh environments such as acids, alkalis, and salts. In terms of flexibility and ease of construction, the carbon fiber cloth is soft and easy to cut and fit to complex structural surfaces, making construction simple. It can effectively improve the crack resistance of the concrete pipe pile body 1 and protect it from soil corrosion.

[0021] To improve the corrosion resistance of the concrete pipe pile body, the wear-resistant and waterproof layer 3 is made of EPDM rubber waterproof membrane. The wear-resistant and waterproof layer 3 is bonded to the outer surface of the fiber tensile layer 2 with a high-strength adhesive.

[0022] By selecting EPDM rubber waterproof membrane for the abrasion-resistant waterproof layer 3, it has excellent weather resistance, high elasticity, aging resistance, and good abrasion resistance. It can maintain stable performance under various climatic conditions, is not easy to age, and has good resistance to chemicals such as acids, alkalis, and salts. It is suitable for a variety of complex environments, can adapt to the deformation of the base layer, reduce the damage to the waterproof layer caused by structural expansion or cracking, protect the fiber tensile layer 2, prevent its wear, and prevent water in the soil from affecting the fiber tensile layer 2.

[0023] The strength support mechanism designed to improve the strength of the concrete pipe pile body includes an upper fixed shell 4. The inner top surface of the upper fixed shell 4 is in contact with the upper surface of the concrete pipe pile body 1. A fixing bolt 5 is threadedly connected to the upper surface of the upper fixed shell 4. The threaded end of the fixing bolt 5 passes through and extends to the lower part of the upper fixed shell 4. The threaded end of the fixing bolt 5 is also threadedly connected to the upper part of the concrete pipe pile body 1. The inner sidewall of the upper fixed shell 4 is in contact with the wear-resistant and waterproof layer 3. The lower outer sidewall of the wear-resistant and waterproof layer 3 is in contact with the lower fixed shell 6. The inner bottom surface of the lower fixed shell 6 is in contact with the lower surface of the concrete pipe pile body 1 through the fixing bolt 5.

[0024] By setting up an upper fixing shell 4 and a lower fixing shell 6, and fixing the upper fixing shell 4 and the lower fixing shell 6 to the upper and lower ends of the concrete pipe pile body 1 by fixing bolts 5, the lower end of the concrete pipe pile body 1 is prevented from directly contacting the soil, and corrosion of the bottom outer surface of the concrete pipe pile body 1 is prevented.

[0025] The upper fixed shell 4 and the lower fixed shell 6 are rotatably connected to each other by a double-ended screw 7 via ball bearings. The upper end of the double-ended screw 7 passes through and extends out of the upper end of the upper fixed shell 4. The upper end of the double-ended screw 7 is fixedly connected to a rotating nut 8. The upper surface of the rotating nut 8 is threadedly connected to a limit bolt 9. The lower threaded end of the limit bolt 9 is also threadedly connected to the upper fixed shell 4.

[0026] By setting up a bidirectional screw 7 and a rotating nut 8, the rotation of the rotating nut 8 can drive the bidirectional screw 7 to rotate. At the same time, the setting of the limiting bolt 9 can limit and fix the rotation of the rotating bolt. When it is necessary to lock the bidirectional screw 7, the rotating bolt can be used to fix the rotating nut 8.

[0027] The two sides of the bidirectional screw 7 are threaded with movable blocks 10 respectively. The lower surface of the upper fixed shell 4 and the upper surface of the lower fixed shell 6 are fixed with fixed blocks 11 respectively. The outer surfaces of the two fixed blocks 11 are rotatably connected to the arc surfaces of the two ends of the bidirectional screw 7 through ball bearings. The opposite surfaces of the movable blocks 10 and the fixed blocks 11 are fixed with mounting blocks 12 respectively. The opposite surfaces of every two mounting blocks 12 are rotatably connected with mounting shafts 13 through ball bearings. The arc surface of the mounting shaft 13 is fixed with a support rod 14. The end of the support rod 14 away from the mounting shaft 13 is fixed with a support shaft 15. The two ends of the support shaft 15 pass through and extend out of the two sides of the support rod 14 respectively. The two ends of the support shaft 15 extending out of the two sides of the support rod 14 are rotatably connected with support blocks 16 through ball bearings. The side surface of every four support blocks 16 is fixed with a pressing block 17. The side surface of the pressing block 17 is in pressing contact with the inner wall of the concrete pipe pile body 1.

[0028] The rotation of the bidirectional screw 7 causes the two moving blocks 10 to move toward the fixed block 11 respectively. The movement of the moving blocks 10 causes the support rod 14 on the same side to rotate around the mounting shaft 13 under force. This causes the support rod 14 to push the extrusion block 17 outward, so that the extrusion block 17 presses against the inner wall of the concrete pipe pile body 1. After rotating to the appropriate position, the bidirectional screw 7 is locked by the limit bolt 9, so that the extrusion block 17 continuously presses against the inner wall of the concrete pipe pile body 1, providing support for the concrete pipe pile body 1 and improving the strength of the concrete pipe pile body 1.

[0029] Working principle: First, carbon fiber cloth is bonded to the outside of the concrete pipe pile body 1 to form a fiber tensile layer 2 using adhesive. Then, EPDM rubber waterproof membrane is bonded to the outside of the fiber tensile layer 2 to form a wear-resistant and waterproof layer 3. Next, a lower fixing shell 6 is installed at the lower end of the concrete pipe pile body 1 using fixing bolts 5. Then, the lower end of the bidirectional screw 7 is rotatably connected to the lower fixing shell 6 via ball bearings. Then, the upper fixing shell 4 is fixedly installed on the upper part of the concrete pipe pile body 1 using fixing bolts 5. Finally, the rotating nut 8 is fixedly connected to the upper end of the bidirectional screw 7 extending from the upper fixing shell 4. Then, the rotating screw... The cap 8 drives the bidirectional screw 7 to rotate, causing the two moving blocks 10 to move toward the fixed block 11 respectively. The movement of the moving blocks 10 causes the support rod 14 on the same side to rotate around the mounting shaft 13 under force, causing the support rod 14 to push the extrusion block 17 to move outward, so that the extrusion block 17 presses against the inner wall of the concrete pipe pile body 1. Then, the limit bolt 9 is screwed in to lock the rotating cap 8, so that the bidirectional screw 7 stops rotating, and the extrusion block 17 continues to press against the inner wall of the concrete pipe pile body 1, providing support for the concrete pipe pile body 1 and improving the strength of the concrete pipe pile body 1. Then, the concrete pipe pile body 1 is inserted into the pile pit.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-strength fiber-reinforced concrete pipe pile, comprising a concrete pipe pile body (1), characterized in that: The outer arc surface of the concrete pipe pile body (1) is fixedly connected to a fiber tensile layer (2), and the outer arc surface of the fiber tensile layer (2) is fixedly connected to an anti-wear and waterproof layer (3). The concrete pipe pile body (1) is provided with a strength support mechanism inside. The strength support mechanism includes an upper fixed shell (4), the inner top surface of the upper fixed shell (4) is in extrusion contact with the upper surface of the concrete pipe pile body (1), the upper surface of the upper fixed shell (4) is threaded with a fixing bolt (5), the threaded end of the fixing bolt (5) penetrates and extends to the lower part of the upper fixed shell (4), the threaded end of the fixing bolt (5) is also threadedly connected to the upper part of the concrete pipe pile body (1), the inner side wall of the upper fixed shell (4) is in extrusion contact with the wear-resistant and waterproof layer (3), the lower outer side wall of the wear-resistant and waterproof layer (3) is in extrusion contact with a lower fixed shell (6), the inner bottom surface of the lower fixed shell (6) is in extrusion contact with the lower surface of the concrete pipe pile body (1) through the fixing bolt (5); The upper fixed shell (4) and the lower fixed shell (6) are rotatably connected to each other by a double-ended screw (7) via ball bearings. The upper end of the double-ended screw (7) passes through and extends out of the upper end of the upper fixed shell (4). The upper end of the double-ended screw (7) is fixedly connected to a rotating nut (8). The upper surface of the rotating nut (8) is threadedly connected to a limit bolt (9). The lower threaded end of the limit bolt (9) is also threadedly connected to the upper fixed shell (4). The two threaded surfaces of the bidirectional screw (7) are respectively threaded with movable blocks (10). The lower surface of the upper fixed shell (4) and the upper surface of the lower fixed shell (6) are respectively fixed with fixed blocks (11). The outer surfaces of the two fixed blocks (11) are respectively rotatably connected to the arc surfaces of the two ends of the bidirectional screw (7) through ball bearings. The opposite surfaces of the movable blocks (10) and the fixed blocks (11) are respectively fixed with mounting blocks (12). The opposite surfaces of every two mounting blocks (12) are rotatably connected with mounting shafts (13) through ball bearings. A support rod (14) is fixedly connected to the arc surface of the concrete pipe pile body (1). A support shaft (15) is fixedly connected to one end of the support rod (14) away from the mounting shaft (13). The two ends of the support shaft (15) pass through and extend out of the two sides of the support rod (14). The two ends of the support shaft (15) extending out of the two sides of the support rod (14) are respectively rotatably connected to support blocks (16) through ball bearings. An extrusion block (17) is fixedly connected to one side surface of every four support blocks (16). One side surface of the extrusion block (17) is in extrusion contact with the inner wall of the concrete pipe pile body (1).

2. The high-strength fiber-reinforced concrete pipe pile according to claim 1, characterized in that: The fiber tensile layer (2) is made of carbon fiber and is bonded to the outer surface of the concrete pipe pile body (1) by a high-strength adhesive.

3. The high-strength fiber-reinforced concrete pipe pile according to claim 1, characterized in that: The abrasion-resistant waterproof layer (3) is made of EPDM rubber waterproof membrane and is bonded to the outer surface of the fiber tensile layer (2) by a high-strength adhesive.

Images