Threaded structure and threaded pipe pile

Abstract

The utility model provides a threaded structure and a threaded pipe pile, which are used for solving the problem that the mechanical occlusal force between the threaded pipe pile and soil is insufficient because the upper surface and the lower surface of the traditional threaded structure on the threaded pipe pile are smooth plane structures. The thread structure comprises a thread protrusion, a first concave surface portion and a second concave surface portion. The first concave surface part is arranged on the upper surface of the threaded protrusion, the second concave surface part is arranged on the lower surface of the threaded protrusion, the first concave surface part and the second concave surface part are used for improving the meshing force between the threaded protrusion and soil, and through the arrangement, the mechanical meshing force between the threaded pipe pile and the soil can be increased; and the long-term stability of the threaded pipe pile in the soil is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of precast concrete pipe piles, and in particular relates to a threaded structure and a threaded pipe pile. Background Technology

[0002] Against the backdrop of global energy transition, photovoltaic (PV) power generation, as a crucial component of clean and renewable energy, has seen its large-scale construction and efficient utilization become a core direction for industry development. In PV engineering practice, the stability of its support foundations and supporting facilities relies heavily on the support of foundation piles. Precast concrete threaded pipe piles, due to their excellent bearing capacity and pull-out resistance, are widely used in PV support foundation construction under soft soil conditions, effectively solving the problems of insufficient bearing capacity and poor pull-out resistance of traditional concrete pipe piles in soft soil foundations.

[0003] The utility model patent with publication number CN217399626U specifically discloses a photovoltaic pile for a tidal flat photovoltaic power station, including a pile body, which is a cylindrical hollow cylinder. The upper part of the pile body is a smooth circular section, and the lower part of the pile body is a spiral rib section. The upper end of the smooth circular section is exposed in the soil. The outer wall of the spiral rib section is provided with continuous spiral protrusions, and the spiral ribs extend along the axial direction of the pile body. Through the setting of the spiral ribs, during the construction process, the upper part of the pile body is clamped by a clamping device and a certain rotational force is applied, so the spiral ribs at the bottom of the pile body can achieve a similar effect to spiral drilling. However, the traditional thread cross section mostly adopts the triangular or isosceles trapezoidal design in the prior art. During the screwing of the pile body, the contact surface of the traditional thread is difficult to form an effective embedding with the soil, which leads to insufficient mechanical interlocking force between the pile and the soil, affecting the long-term stability of the photovoltaic support.

[0004] Therefore, the shortcomings of existing threaded pipe piles are that the upper and lower surfaces of the traditional threaded structure on the threaded pipe pile are smooth flat structures, resulting in insufficient mechanical interlocking force between the threaded pipe pile and the soil. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a threaded structure with concave surfaces on both the upper and lower surfaces of the threaded protrusion and a threaded pipe pile, so as to improve the interlocking effect between the threaded pipe pile and the soil and solve the problem of insufficient interlocking force between the threaded pipe pile and the soil in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a threaded structure, comprising a threaded protrusion, a first concave portion, and a second concave portion;

[0007] The upper surface of the threaded protrusion is provided with the first concave portion, and the lower surface of the threaded protrusion is provided with the second concave portion. The first and second concave portions are used to improve the interlocking force between the threaded protrusion and the soil.

[0008] As an optional solution, the front end of the first concave part extending along the spiral direction of the threaded protrusion is the head of the first concave part, and the intersection line of the head of the first concave part and the upper surface of the threaded protrusion is the first intersection line.

[0009] The tail end of the second concave part extending along the helical direction of the threaded protrusion is the tail of the second concave part, and the intersection line of the tail of the second concave part and the lower surface of the threaded protrusion is the second intersection line.

[0010] The first intersection line, the second intersection line, and the helical axis of the threaded protrusion are located in the same plane.

[0011] As an alternative, the first concave portion and the second concave portion are arranged in a plurality of arrays along the helical axis of the threaded protrusion.

[0012] As an option, the first concave surface and / or the second concave surface may be arc-shaped.

[0013] As an option, the first concave surface and / or the second concave surface can be formed by splicing together multiple surfaces.

[0014] A threaded pipe pile, the threaded pipe pile including the aforementioned threaded structure, the threaded pipe pile further including a pile body, the threaded structure being disposed on the outer wall of the pile body, and the axis of the threaded structure coinciding with the axis along the pipe pile.

[0015] As an optional solution, the number of threaded structures is one segment, and the helical length of the threaded protrusion of the threaded structure is equal to the length of the pipe pile.

[0016] As an optional solution, the number of threaded structures is one segment, and the helical length of the threaded protrusions of the threaded structure is less than the length of the pipe pile.

[0017] As an optional solution, the number of threaded structures is multiple segments, and the interval between adjacent threaded structures is greater than 0.

[0018] As described above, the threaded structure and threaded pipe pile of this utility model have at least the following beneficial effects:

[0019] 1. This application increases the surface area between the threaded protrusion and the soil by setting a first concave part and a second concave part, thereby enhancing the interlocking force between the threaded pipe pile and the soil;

[0020] 2. By setting a first concave surface and a second concave surface, the cutting edge formed between the first concave surface and the second concave surface effectively reduces soil resistance and can actively guide soil particles to flow into the concave surface during the process of rotating threaded pipe piles being driven into the soil, thereby reducing the rotation resistance.

[0021] 3. By setting a first concave part and a second concave part, the thread structure of this application forms a larger draft angle through the first concave part and the second concave part compared with the traditional thread structure. This not only makes it easier for the threaded pipe pile to be pulled out of the mold during the demolding process, but also protects the thread protrusion of the threaded pipe pile and the integrity of the mold. Attached Figure Description

[0022] Figure 1 The diagram shows a threaded pipe pile with the first concave surface and the second concave surface being arc-shaped.

[0023] Figure 2 The diagram shown is a structural schematic of the threaded pipe pile of this utility model buried in the soil.

[0024] Figure 3 Displayed as Figure 1 Enlarged view of point A in the middle;

[0025] Figure 4 The diagram shows a threaded pipe pile with multiple surfaces spliced ​​together in the first and second concave sections.

[0026] Figure 5 Displayed as Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 The diagram shows a threaded pipe pile with a helix length equal to the length of the pipe pile, where the helix length of the threaded protrusion is equal to the length of the pipe pile.

[0028] In the diagram: 1. Threaded protrusion, 2. First concave part, 3. Second concave part, 4. Pile body. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0030] Please see Figures 1 to 6It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0031] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0032] In this embodiment, please refer to Figure 1 and Figure 4 This utility model provides a threaded structure, which includes: a threaded protrusion 1, a first concave portion 2, and a second concave portion 3;

[0033] The upper surface of the threaded protrusion 1 is provided with the first concave portion 2, and the lower surface of the threaded protrusion 1 is provided with the second concave portion 3. The first concave portion 2 and the second concave portion 3 are used to improve the interlocking force between the threaded protrusion 1 and the soil.

[0034] The front end of the first concave part 2 extending along the spiral direction of the threaded protrusion 1 is the head of the first concave part 2, and the intersection line of the head of the first concave part 2 and the upper surface of the threaded protrusion 1 is the first intersection line.

[0035] The tail end of the second concave part 3 extending along the spiral direction of the threaded protrusion 1 is the tail of the second concave part 3, and the intersection line of the tail of the second concave part 3 and the lower surface of the threaded protrusion 1 is the second intersection line.

[0036] The first intersection line, the second intersection line, and the helical axis of the threaded protrusion 1 are located in the same plane;

[0037] Here, the first concave portion 2 and the second concave portion 3 form continuous cutting edges on the spiral protrusion. During the rotation of the threaded pipe pile, the continuous cutting edges reduce the resistance to cutting the soil while guiding soil particles to flow into the concave surface. When the pile body 4 is under load, the soil in the first concave portion 2 and the second concave portion 3 will cause the soil particles to squeeze and embed themselves under pressure, thus forming soil wedges that are embedded in the first concave portion 2 and the second concave portion 3, enhancing the interlocking force between the threaded pipe pile and the soil. This reduces the gap between the soil and the threaded structure, thereby improving the embedding effect of the threaded pipe pile.

[0038] By setting the first concave part 2 and the second concave part 3, the contact area between the threaded protrusion 1 and the soil is increased, thereby increasing the biting force between the threaded pipe pile and the soil.

[0039] By setting the first concave part 2 and the second concave part 3, the threaded structure forms a larger demolding angle through the first concave part 2 and the second concave part 3, which not only makes it easier for the threaded pipe pile to be pulled out of the mold during the demolding process, but also protects the integrity of the threaded protrusion 1 of the threaded pipe pile and the mold.

[0040] In this embodiment, please refer to Figure 1 and Figure 4 The first concave portion 2 and the second concave portion 3 are arranged in a plurality of arrays along the helical axis of the threaded protrusion 1.

[0041] With this configuration, multiple first concave surfaces 2 and second concave surfaces 3 are arranged in an array to increase the surface area between the threaded protrusions 1 and the soil, thereby increasing the interlocking force between the threaded pipe pile and the soil.

[0042] In this embodiment, please refer to Figure 1 and Figure 3 The first concave surface 2 and / or the second concave surface 3 are arc-shaped surfaces;

[0043] In this embodiment, please refer to Figure 4 and Figure 5 The first concave surface 2 and / or the second concave surface 3 are composed of multiple surfaces joined together;

[0044] Here, the first concave surface 2 can be formed by splicing multiple planes, splicing multiple arc surfaces, or splicing planes and arc surfaces together;

[0045] Here, the second concave surface 3 can be formed by splicing multiple planes, splicing multiple arc surfaces, or splicing planes and arc surfaces together;

[0046] Here, the first concave portion 2 and the second concave portion 3 can be the same size or different.

[0047] This configuration, with its first concave portion 2 and second concave portion 3, increases the contact area between the threaded protrusion 1 and the soil, and enhances the complexity of the interlocking interface. When the pile 4 is under stress, the first concave portion 2 and second concave portion 3 ensure that soil particles contact the threaded protrusion 1 not only horizontally but also vertically. This results in multiple soil blocks that become lodged within the first and second concave portions 2 and 3, significantly improving the interlocking force between the pile and the soil.

[0048] In this embodiment, please refer to Figure 1 and Figure 2 This utility model provides a threaded pipe pile, which includes the threaded structure described above, and also includes a pile body 4. The threaded structure is disposed on the outer wall of the pile body 4, and the axis of the threaded structure coincides with the axis along the pile body 4.

[0049] Here, the threaded structure is integrally cast with the pile body 4;

[0050] Here, the pile body 4 can be a solid cylinder, or it can be a hollow tubular structure.

[0051] In this embodiment, please refer to Figure 6 The number of the threaded structures is one segment, and the helical length of the threaded protrusion 1 of the threaded structure is equal to the length of the pile body 4;

[0052] Here, as Figure 6 Taking the illustrated embodiment as an example, the starting end of the threaded protrusion 1 is located at one end of the pile body 4, and the other end of the threaded protrusion 1 is located at the other end of the pile body 4, forming a fully threaded pile body 4 structure.

[0053] In this embodiment, please refer to Figure 1 and Figure 4 The number of the threaded structures is one segment, and the helical length of the threaded protrusion 1 of the threaded structure is less than the length of the pile body 4;

[0054] Here, as Figure 1 As shown in the example, the starting end of the threaded protrusion 1 is located at one end of the pile body 4, and the other end of the threaded protrusion 1 is located in the middle of the pile body 4. The threaded pipe pile has a smooth cylindrical section in the upper half and a threaded section in the lower half.

[0055] Here, the starting end of the threaded protrusion 1 can also be located in the middle of the pile body 4, and the other end of the threaded protrusion 1 is located in the middle of the pile body 4, forming a threaded pipe pile with smooth upper and lower cylindrical sections and a threaded section in the middle.

[0056] With this setup, during construction, the upper part of the pile body 4 is clamped by a clamping device to hold the smooth cylindrical section of the threaded pipe pile. The smooth surface of the upper cylindrical section has a uniform contact area with the clamping device, avoiding wear on the clamping device caused by the threaded structure and facilitating stable gripping by the clamping device. The clamping device clamps the smooth cylindrical section and applies a certain rotational force, allowing the spiral protrusion at the lower part of the pile body 4 to achieve an effect similar to spiral drilling. During the sinking process of the pile body 4, the spiral protrusion can cut through soft soil, resulting in higher construction efficiency.

[0057] In this embodiment, the number of threaded structures is multiple segments, and the interval between adjacent threaded structures is greater than 0.

[0058] Here, the threaded structure at the bottom of the pile body 4 is the first threaded structure, the threaded structure at the top of the pile body 4 is the second threaded structure, and the threaded structure in the middle of the pile body 4 is the middle threaded structure; the number of the middle threaded structures can be greater than or equal to 0.

[0059] Here, the starting end of the first threaded structure can be connected to the lower end of the pile body 4, or the starting end of the first threaded structure can be not connected to the lower end of the pile body 4.

[0060] Here, the starting end of the second threaded structure can be connected to the upper end of the pile body 4, or the starting end of the second threaded structure can be not connected to the upper end of the pile body 4.

[0061] Here, the thread structure and thread length of the first thread structure, the second thread structure, and the intermediate thread structure can be the same or different;

[0062] This setup allows for the combination of multiple threaded structures, increasing the applicability of threaded pipe piles in various scenarios.

[0063] In summary, by providing a first concave surface 2 and a second concave surface 3, this utility model effectively reduces soil resistance and actively guides soil particles to flow into the concave surface during the process of rotating the threaded pipe pile into the soil, thereby reducing the rotation resistance. During the long-term service stage of the threaded pipe pile, the first concave surface 2 and the second concave surface 3 increase the surface area between the threaded protrusion 1 and the soil, thereby enhancing the interlocking force between the threaded pipe pile and the soil.

[0064] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A thread structure, characterized by The thread structure comprises a thread protrusion, a first concave part and a second concave part. The upper surface of the thread protrusion is provided with the first concave part, and the lower surface of the thread protrusion is provided with the second concave part, so as to improve the engagement force between the thread protrusion and the soil.

2. A thread structure according to claim 1, wherein The front end of the first concave part extending along the spiral direction of the thread protrusion is the head of the first concave part, and the intersection line between the head of the first concave part and the upper surface of the thread protrusion is the first intersection line. The tail end of the second concave part extending along the spiral direction of the thread protrusion is the tail of the second concave part, and the intersection line between the tail of the second concave part and the lower surface of the thread protrusion is the second intersection line. The first intersection line, the second intersection line and the spiral axis of the thread protrusion are located in the same plane.

3. The thread structure according to claim 1, wherein The first concave part and the second concave part are arranged in an array along the spiral axis of the thread protrusion.

4. The thread structure according to claim 1, wherein The first concave part and / or the second concave part is an arc surface.

5. The thread structure according to claim 1, wherein The first concave part and / or the second concave part is composed of a plurality of surfaces.

6. A threaded pipe pile, characterized in that The thread pipe pile comprises the thread structure according to any one of claims 1-5, further comprises a pile body, the thread structure is arranged on the outer wall of the pile body, and the axis of the thread structure coincides with the axis along the pile body.

7. A threaded tubular pile according to claim 6, characterized in that The number of the thread structures is one segment, and the spiral length of the thread protrusion of the thread structure is equal to the length of the pile body.

8. The threaded pipe pile according to claim 6, wherein, The number of the thread structures is one segment, and the spiral length of the thread protrusion of the thread structure is less than the length of the pile body.

9. The threaded pipe pile according to claim 6, wherein, The number of the thread structures is multiple segments, and the interval between adjacent thread structures is greater than 0.

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