Triangular concrete hollow pile

Abstract

The utility model provides a triangular concrete hollow pile. The triangular concrete hollow pile comprises a triangular pile body, a triangular reinforcement cage and a plurality of connecting structures. The triangular reinforcement cage is arranged in the triangular pile body, and a cavity structure is arranged in the center of the triangular reinforcement cage. The triangular reinforcement cage comprises stirrups, a plurality of steel strands and a plurality of steel bars, the multiple steel strands and the multiple steel bars form a triangular prism structure, the steel strands and the steel bars are arranged at intervals, and the stirrups surround the outer sides of the steel strands and the outer sides of the steel bars. According to the triangular concrete hollow pile, the problem that a precast pile is unevenly stressed in soil due to the fact that the precast pile is single in shape in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the prefabricated pile technical field especially, it relates to a triangular concrete hollow pile. BACKGROUND

[0002] In the ground foundation reinforcement and infrastructure, the commonly used prefabricated pile mainly includes solid pile and hollow pile of circular section. These pile bodies have good bearing capacity and durability, but due to the single shape of prefabricated pile in the related technology, the prefabricated pile unevenly exists in the stress in the soil, and the deflection condition is easy to produce, which affects the construction quality and efficiency. In addition, with the acceleration of urbanization, the requirement for construction efficiency is higher and higher, and the traditional pile type can not completely meet the demand of modern construction. In recent years, researchers begin to explore prefabricated piles of different shapes to improve these problems, such as rectangle, oval and the like, but there is still certain limitation, especially in improving construction speed. SUMMARY

[0003] Therefore, the utility model aims at at least one of the related technical problems to some extent.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A triangular concrete hollow pile, comprising a triangular pile body, a triangular reinforcement cage and a plurality of connecting structures;

[0006] The triangular reinforcement cage is arranged in the interior of the triangular pile body, and a cavity structure is arranged at the center position of the triangular reinforcement cage;

[0007] The triangular reinforcement cage comprises a stirrup and a plurality of steel strands, the plurality of steel strands form a triangular prism structure, and the stirrup is arranged on the outer side of the steel strands;

[0008] One connecting structure is arranged at the front end and the rear end of each steel strand, and the connecting structure is used for connecting other prefabricated piles.

[0009] Further, three edge structures are arranged on the exterior of the triangular pile body, and the edge structures are planar.

[0010] Further, the triangular reinforcement cage (3) further comprises a plurality of steels (5), the steel strands (4) and the steels (5) are arranged at intervals, the three edge positions of the triangular reinforcement cage are all steel strands, two steel strands are uniformly arranged on each side end surface of the triangular reinforcement cage, and one steel is arranged between the adjacent two steel strands.

[0011] Further, the connecting structure comprises a first sleeve, a second sleeve, an inner nut, a plug rod, a gasket, a rubber ring, two limiting blocks and a plurality of locking pieces, the two limiting blocks are symmetrically arranged at the front and rear ends of the steel strand, the first sleeve and the second sleeve are connected with the steel strand through one limiting block at the inner end, the end of the plug rod is provided with a threaded structure, the threaded structure is connected with the first sleeve, the plurality of locking pieces are evenly distributed in the inner side of the rubber ring, the rubber ring is arranged in the inner side of the second sleeve, the inner nut is threadedly connected with the second sleeve, the locking pieces are located between the limiting blocks and the inner nut, the inner nut is provided with a through hole capable of passing through the plug rod at the middle part, the end of the plug rod is provided with a protruding structure, the locking pieces are used for locking and fixing the protruding structure, and the gasket is arranged between the locking pieces and the limiting blocks.

[0012] Further, the cavity structure is a cylinder, and the pile body is formed by pouring concrete.

[0013] Further, the edge structure is a circular arc, the corner is easy to be formed in the forming of the pile body, and the construction pile forming rate can be effectively improved.

[0014] Further, the steel strand is a prestressed steel strand, and the steel bar is a non-prestressed steel bar.

[0015] Further, the length of the side of the cross section of the cavity structure is 10%-20% of the length of the side of the cross section of the triangular pile body, the cavity structure penetrates the triangular pile body, and the pile body is formed by centrifugal forming of concrete.

[0016] Further, the front and rear end faces of the triangular pile body are provided with end plates.

[0017] Further, the steel strand is externally provided with a corrosion-resistant coating.

[0018] Compared with the prior art, the triangular concrete hollow pile has the following advantages:

[0019] 1、The three edges of the triangular reinforcement cage are arranged with steel strands, forming a three-edged prism structure that not only improves the overall stability of the pile body but also significantly enhances the bending and torsional resistance. Steel strands, with their high strength and good ductility, are distributed along the edges and sides of the triangular pile body, helping to evenly distribute external forces. Especially when subjected to longitudinal pressure and transverse shear, they can effectively avoid stress concentration, thereby improving the load-bearing performance of the pile body. As a prestressed component, steel strands have a relatively small diameter but higher strength, reducing the use of ordinary steel bars. While ensuring safety and reliability, it effectively saves material costs. The reasonable interval arrangement of steel strands and steel bars forms a stable support system that tightly combines with the concrete after pouring, thereby improving the overall stiffness and durability of the pile body. Steel strands distributed in key positions of the triangular reinforcement cage can provide superior seismic resistance. Under seismic or other dynamic loads, their high strength and good flexibility can effectively absorb energy and reduce the damage the structure may suffer.

[0020] 2、The flat edges can better provide support force, with a larger contact area when under stress, which can evenly distribute external forces and improve the compressive capacity and stability of the pile body. During transportation, storage, or temporary stacking at the construction site, flat edge structures can provide better adhesion, preventing pile rolling or sliding, thereby improving the safety and stability of stacking. Flat edges do not require complex mold design and construction technology during manufacturing, reducing production and construction costs and making the process more efficient. In underground construction, flat edges can easily form a tight contact surface with the surrounding soil and concrete, improving the friction and embedding effect of the pile body with the surrounding medium, thereby improving the overall load-bearing capacity.

[0021] 3、The circular arc edges can effectively alleviate the stress concentration phenomenon caused by excessively sharp corners, especially under bending, torsion, or uneven loads, reducing the risk of cracks in the pile body and improving the durability of the structure. The circular arc design can better disperse external impact forces, making the pile body more flexible when subjected to instantaneous impact or dynamic loads, thereby protecting the concrete structure from breaking.

[0022] 4、The threaded structure of the end of the inserted rod can quickly cooperate with the sleeve, and the assembly is simple and efficient, reducing the complexity and workload of construction, especially greatly improving the construction efficiency in large-scale projects. The design of the inner nut, locking plate and other components makes the connection operation more flexible, which can quickly complete the connection and also facilitate disassembly when needed, realizing modular construction. The gasket is arranged at the insertion position to form a good sealing effect, which can effectively prevent external moisture, silt and other substances from penetrating into the pile body, thereby enhancing the durability and corrosion resistance of the connection part, especially suitable for construction in underwater or humid environments. The pile and the pile are connected mechanically, and the end plate at both ends of the pile body is omitted, thereby greatly reducing the cost, avoiding quality problems caused by manual welding of the pile joint part, saving the cooling time after welding, avoiding corrosion of the steel end plate exposed in the soil, and preventing the connection between the piles from breaking, thereby disconnecting the connected piles. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 A schematic diagram of a triangular concrete hollow pile according to an embodiment of the present application;

[0025] Figure 2 A perspective view of a triangular concrete hollow pile according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a first sleeve and inserted rod structure according to an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a second sleeve, locking plate and inner nut combination structure according to an embodiment of the present application;

[0028] Figure 5 A schematic diagram of an inserted rod and locking plate locking and fixing structure according to an embodiment of the present application;

[0029] Figure 6 A schematic diagram of a flat edge structure according to an embodiment of the present application;

[0030] Figure 7 A schematic diagram of a steel strand distribution structure of a triangular reinforcing steel according to an embodiment of the present application;

[0031] Figure 8 A schematic diagram of a cylindrical cavity structure according to an embodiment of the present application.

[0032] BRIEF DESCRIPTION OF DRAWINGS:

[0033] 1, triangle pile body; 2, cavity structure; 3, triangle reinforcement cage; 4, steel strand; 5, steel bar; 6, stirrup; 71, first sleeve; 72, second sleeve; 8, inserting rod; 9, inner nut; 10, locking plate; 11, gasket; 12, rubber ring; 13, sealing material; 14, edge structure. DETAILED DESCRIPTION

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0036] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] A kind of triangle concrete hollow pile, as shown in figure Figure 1 The center position of triangle reinforcement cage 3 is provided with cavity structure 2;In the present embodiment, triangle reinforcement cage 3 includes stirrup 6, multiple steel strands 4 and multiple steel bars 5, multiple steel strands 4 and multiple steel bars 5 form three prism structure, steel strand 4 and steel bar 5 are arranged at intervals, and stirrup 6 is wrapped outside steel strand 4 and steel bar 5;As shown inFigure 8 As shown, the cavity structure 2 is a cylinder, and the pile body is formed by pouring concrete. The steel strand 4 is a prestressed steel strand 4, and the steel bar 5 is a non-prestressed steel bar 5. The stirrup 6 is in the form of mechanical roll welding and surrounds the outside of the prestressed steel strand 4 and the non-prestressed steel bar 5.

[0039] The steel reinforcement cage framework uses prestressed steel strands as prestressed main reinforcement. Compared with prestressed steel rods for concrete, the prestressed steel strands have high strength, good ductility, and good toughness, which can greatly improve the bending and shear resistance of the precast concrete pile. The mixed reinforcement of prestressed steel strands and non-prestressed steel bars greatly improves the performance of the pile body of the triangular pile. Compared with ordinary pipe piles, the crack bending moment, ultimate crack bending moment, pile body vertical bearing capacity, and ductility of the pile body are greatly improved. Under the same working conditions, the crack width can be reduced by 50%, the failure mode of the pile body is plastic failure, and the safety is also greater than the brittle failure of the pipe pile.

[0040] The steel reinforcement cage structure of the triangular concrete hollow pile is stable. Under the condition that the peripheral area is the same as that of the pipe pile and the square pile, the bending resistance, shear resistance, and pile body bearing capacity are greatly improved, the use amount of concrete is greatly reduced, the performance is more excellent, the cost performance is more outstanding, and the triangular concrete hollow pile has a very broad application prospect.

[0041] A connecting structure is arranged at the front and rear ends of each steel strand 4, and the connecting structure is used to connect other precast piles. The triangular pile body 1 is externally provided with three edge structures 14, and the edge structures 14 are planar. The front and rear end faces of the triangular pile body 1 are provided with end plates. The steel strand 4 is externally provided with a corrosion-resistant coating. The planar edge can better provide support force, has a larger contact area when stressed, can uniformly disperse external force, and improves the compression resistance and stability of the pile body. When the pile body is transported, stored, or temporarily stacked at the construction site, the planar edge can provide better adhesion, avoid rolling or sliding of the pile body, and thus improve the safety and stability of the stacking. The planar edge does not require complex mold design and construction process during the manufacturing process, reduces the production and construction cost, and makes the processing process more efficient. The planar edge can easily form a close contact surface with the surrounding soil and concrete during underground construction, improve the friction force and embedding effect of the pile body and the surrounding medium, and thus improve the overall bearing capacity.

[0042] As shown in FIG. 1, the triangular pile body 1 is externally provided with three edge structures 14, and the edge structures 14 are planar. The front and rear end faces of the triangular pile body 1 are provided with end plates. The steel strand 4 is externally provided with a corrosion-resistant coating. Figure 7As shown, the three edges of the triangular reinforcement cage 3 are all located at the steel strands 4, and two steel strands 4 are evenly distributed on each side of the triangular reinforcement cage 3, and one steel bar 5 is arranged between the two adjacent steel strands 4. The three edges of the triangular reinforcement cage 3 are all arranged with steel strands 4, so that the overall structure forms a triangular prism, which not only improves the overall stability of the pile body, but also significantly enhances the bending and torsional resistance. The steel strands 4 have high strength and good ductility, and are distributed on the edges and sides of the triangular pile body 1, which helps to uniformly disperse external forces. Especially when subjected to longitudinal pressure and transverse shear force, stress concentration can be effectively avoided, thereby improving the load-bearing performance of the pile body. The steel strands 4 are prestressed components with relatively small diameter but high strength, which can reduce the amount of ordinary steel bars 5. While ensuring safety and reliability, material costs are effectively saved. The steel strands 4 and the steel bars 5 are arranged at intervals and designed reasonably, which can form a stable support system and combine closely with the concrete after pouring, thereby improving the overall stiffness and durability of the pile body. The steel strands 4 are distributed at key positions of the triangular reinforcement cage 3, which can provide superior seismic resistance. Under earthquakes or other dynamic loads, its high strength and good flexibility can effectively absorb energy and reduce the damage that the structure may suffer.

[0043] As Figures 3-5As shown, the connecting structure includes a first sleeve 71, a second sleeve 72, an inner nut 9, a plug rod 8, a gasket 11, a rubber ring 12, two limiting blocks and a plurality of locking pieces 10. The two limiting blocks are symmetrically arranged at the front and rear ends of the steel strand 4. The inner side ends of the first sleeve 71 and the second sleeve 72 are connected with the steel strand 4 through a limiting block. The end of the plug rod 8 is provided with a threaded structure, which is connected with the first sleeve 71. The plurality of locking pieces 10 are uniformly distributed on the rubber ring 12, which is used for positioning the locking pieces 10. The rubber ring 12 is arranged inside the second sleeve 72. The inner nut 9 is threadedly connected with the second sleeve 72. The rubber ring 12 is located between the limiting block and the inner nut 9. The inner nut 9 is provided with a through hole through which the plug rod 8 can pass. The end of the plug rod 8 is provided with a protruding structure. The locking pieces 10 are used for locking and fixing the protruding structure. The gasket 11 is arranged between the locking piece 10 and the limiting block. The threaded structure at the end of the plug rod 8 can be quickly matched with the sleeve, which is simple and efficient in assembly, reduces the complexity and workload of construction, and greatly improves the construction efficiency, especially in large projects. The design of the inner nut 9, the locking piece 10 and other components makes the connecting operation more flexible, which can quickly complete the connection and also can be easily disassembled when needed, realizing modular construction. The setting of the gasket 11 forms a good sealing effect at the plug-in part, which can effectively prevent external moisture, sand and other substances from penetrating into the pile body, thereby enhancing the durability and corrosion resistance of the connecting part, especially suitable for construction in underwater or humid environment. The pile and the pile are connected by mechanical connection, which saves the end plate at both ends of the pile body, greatly reduces the cost, avoids the quality problems caused by manual welding of the pile joint part, saves the cooling time after welding, avoids the corrosion of the steel end plate exposed in the soil, and prevents the connection between the piles from being broken, thereby disconnecting the connected piles.

[0044] Working mode of the present example

[0045] As Figure 3 and 4 is a schematic diagram of the mechanical connection of the invention. The pile and the pile are connected by mechanical connection. Before pouring concrete to form the pile body, the first sleeve and the second sleeve are pre-buried at both ends of the pile body. Then, the first sleeve 71 and the second sleeve 72 lock the prestressed steel strand 4, and the concrete pile body is formed. When it is necessary to connect the upper and lower piles at the construction site, the inner nut 9, the locking piece 10, the gasket 11 and the rubber ring 12 are placed in the second sleeve 72. The plug rod 8 with a threaded structure is screwed into the first sleeve 71. Then, the sealing material 13 is applied to the end surface of the upper and lower piles. The plug rod 8 is inserted into the second sleeve 72. The sealing material 13 penetrates into the position of the locking piece 10, thereby forming the connection between the upper and lower piles, as Figure 5 is a schematic diagram of the mechanical connection of the invention. The pile and the pile are connected by mechanical connection. Before pouring concrete to form the pile body, the first sleeve and the second sleeve are pre-buried at both ends of the pile body. Then, the first sleeve 71 and the second sleeve 72 lock the prestressed steel strand 4, and the concrete pile body is formed. When it is necessary to connect the upper and lower piles at the construction site, the inner nut 9, the locking piece 10, the gasket 11 and the rubber ring 12 are placed in the second sleeve 72. The plug rod 8 with a threaded structure is screwed into the first sleeve 71. Then, the sealing material 13 is applied to the end surface of the upper and lower piles. The plug rod 8 is inserted into the second sleeve 72. The sealing material 13 penetrates into the position of the locking piece 10, thereby forming the connection between the upper and lower piles, as

[0046] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A triangular concrete hollow pile, characterized by: The triangular pile body (1), the triangular reinforcement cage (3) and a plurality of connecting structures are included. The triangular reinforcement cage (3) is arranged inside the triangular pile body (1), and a cavity structure (2) is arranged at the center position of the triangular reinforcement cage (3). The triangular reinforcement cage (3) includes a stirrup (6) and a plurality of steel strands (4), the plurality of steel strands (4) form a triangular prism structure, and the stirrup (6) is arranged outside the steel strands (4). One connecting structure is arranged at the front end and the rear end of each steel strand (4), and the connecting structure is used for connecting other prefabricated piles.

2. A triangular concrete hollow pile according to claim 1, characterized in that: Three edge structures (14) are arranged outside the triangular pile body (1), and the edge structures (14) are planar.

3. A triangular concrete hollow pile according to claim 1, characterized in that: The triangular reinforcement cage (3) further includes a plurality of steels (5), the steel strands (4) and the steels (5) are arranged at intervals, three edge positions of the triangular reinforcement cage (3) are the steel strands (4), and two steel strands (4) are uniformly arranged at each side end surface of the triangular reinforcement cage (3), and one steel (5) is arranged between the two adjacent steel strands (4).

4. A triangular concrete hollow pile according to any one of claims 2-3, characterized in that: The connecting structure includes a first sleeve (71), a second sleeve (72), an inner nut (9), a plug rod (8), a gasket (11), a rubber ring (12), two limiting blocks and a plurality of locking pieces (10), the two limiting blocks are symmetrically arranged at the front end and the rear end of the steel strand (4), the inner end portions of the first sleeve (71) and the second sleeve (72) are connected with the steel strand (4) through one limiting block, the end portion of the plug rod (8) is provided with a threaded structure, the threaded structure is connected with the first sleeve (71), the plurality of locking pieces (10) are uniformly arranged inside the rubber ring (12), the rubber ring (12) is arranged inside the second sleeve (72), the inner nut (9) is threadedly connected with the second sleeve (72), the locking piece (10) is located between the limiting block and the inner nut (9), a through hole capable of passing through the plug rod (8) is arranged in the middle portion of the inner nut (9), a protruding structure is arranged at the end portion of the plug rod (8), the locking piece (10) is used for locking and fixing the protruding structure, and the gasket (11) is arranged between the locking piece (10) and the limiting block.

5. A triangular concrete hollow pile according to claim 4, characterized in that: The cavity structure (2) is a cylinder.

6. A triangular concrete hollow pile according to claim 2, characterized in that: The edge structure (14) is a circular arc.

7. A triangular concrete hollow pile according to claim 4, characterized in that: The steel strand (4) is a prestressed steel strand (4), and the steel (5) is a non-prestressed steel (5).

8. A triangular concrete hollow pile according to claim 4, characterized in that: The length of the side of the cross section of the cavity structure (2) is 10%-20% of the length of the side of the cross section of the triangular pile body (1), and the cavity structure (2) penetrates the triangular pile body (1).

9. A triangular concrete hollow pile according to claim 4, characterized in that: End plates are arranged at the front end surface and the rear end surface of the triangular pile body (1).

10. A triangular concrete hollow pile according to claim 4, characterized in that: A corrosion-resistant coating is arranged outside the steel strand (4).

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