Composite pile tip and tubular pile structure

Abstract

This utility model relates to the field of building technology and discloses a composite pile tip and pipe pile structure. The composite pile tip includes a base and an arc-shaped wing plate. The base includes a first end face and a second end face. The first end face is used for fixed connection with the pipe body of the pipe pile structure. The root of the arc-shaped wing plate is fixedly connected to the second end face of the base. The arc-shaped wing plate includes an outer surface, which is curved along the insertion direction of the arc-shaped wing plate. The arc-shaped wing plate gradually decreases in size from the root to the top. This utility model solves the problems of single conical pile tips and cross-shaped pile tips by setting an arc-shaped wing plate on the base. The outer surface is curved along the insertion direction of the arc-shaped wing plate, which allows sand and gravel to be discharged along the surface of the outer surface, improving the soil discharge efficiency of the pile head. It can also counteract the lateral compression of the soil and avoid the pile head from deflecting during penetration. The larger size can avoid the possibility of breakage, providing a composite pile tip with excellent comprehensive performance.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a composite pile tip and pipe pile structure. Background Technology

[0002] In the construction of pipe piles, the pile tip, as the core component for the pipe pile to penetrate the strata, directly affects construction efficiency and pile quality. In existing technologies, conical pile tips can concentrate penetration force to penetrate hard strata, but they lack lateral guiding structures, making them prone to deviation in soft soil or fluid strata. Furthermore, their soil removal capacity is weak, and during construction, sand and gravel easily accumulate, forming a hard shell layer that leads to a significant increase in resistance. Cross-shaped pile tips are prone to fatigue fracture under high-frequency impact, and the resistance increases sharply when the flanges are in direct contact with hard strata, resulting in low penetration efficiency. Therefore, there is an urgent need for a pile tip with excellent comprehensive performance, combining the advantages of both conical and cross-shaped pile tips to meet the challenges of complex construction environments. Summary of the Invention

[0003] In view of the above problems, this utility model provides a composite pile tip and pipe pile structure to solve the technical problem of poor comprehensive performance in the existing single pile tip design.

[0004] According to one aspect of the present invention, a composite pile tip is provided, the composite pile tip comprising: a base, including a first end face and a second end face, the first end face being fixedly connected to the pipe body of a pipe pile structure; an arc-shaped wing plate, the root of the arc-shaped wing plate being fixedly connected to the second end face of the base, the arc-shaped wing plate including an outer side surface, the outer side surface being curved along the insertion direction of the arc-shaped wing plate;

[0005] The arc-shaped wing plate gradually decreases in size along the direction from the root to the top.

[0006] In one alternative embodiment, the arcuate wing further includes a first side and a second side, the first side and the second side being adjacent to the outer side;

[0007] Furthermore, the first side and the second side are curved along the insertion direction of the pipe pile structure.

[0008] In one alternative embodiment, the first end face is provided with at least two reinforcing ribs.

[0009] In one alternative embodiment, the end of the reinforcing rib near the inner wall of the tube is connected to the inner wall of the tube.

[0010] In one alternative embodiment, the pile tip further includes a columnar reinforcing member that extends along the insertion direction of the pipe pile structure, and the central axis of the reinforcing member coincides with the central axis of the base.

[0011] In one alternative embodiment, the arcuate wing is connected to the reinforcement on the side near the central axis of the reinforcement.

[0012] In one alternative embodiment, the cross-section of the reinforcing member perpendicular to the central axis is radial.

[0013] In one alternative embodiment, the cross-sectional shape of the reinforcing member perpendicular to the central axis includes a star shape.

[0014] According to another aspect of the present invention, a pipe pile structure is provided, comprising: a composite pile tip as described in any of the first aspects above, and a pipe body connected to the composite pile tip.

[0015] This utility model provides a composite pile tip and pipe pile structure. By setting an arc-shaped wing plate on the base, it solves the problems of the single conical and cross-shaped pile tips in the prior art. The outer surface of the arc-shaped wing plate is continuously curved along the insertion direction of the arc-shaped wing plate, so that when the pile tip penetrates into the sand and gravel, the sand and gravel can be discharged along the surface of the outer surface, improving the soil discharge efficiency of the pile head. At the same time, the radial component force generated by the curved surface of the outer surface can offset the lateral compression of the soil and prevent the pile head from deflecting during penetration. Its overall structure gradually decreases from the root to the top, so that the top can be concentrated for penetration and has strong penetration force. At the same time, the relatively thick root of the arc-shaped wing plate can avoid the possibility of fracture and improve the fatigue resistance of the arc-shaped wing plate. In soft soil, the curved surface of the outer surface and the gradual decrease in size from the root to the top make the area of ​​the outer surface larger than that of a general wing plate, which expands the contact surface between the soft soil and the arc-shaped wing plate to enhance the stability of the guide. In summary, this utility model provides a composite pile tip with high efficiency penetration, stable guidance, strong soil removal capacity and fatigue resistance, solving the technical problems existing in the conical pile tip and cross-shaped pile tip in the prior art.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1A perspective view of the composite pile tip provided in Embodiment 1 of the present invention is shown.

[0019] Figure 2 A top view of the composite pile tip provided in Embodiment 1 of the present invention is shown.

[0020] Figure 3 A perspective view of the composite pile tip provided in Embodiment 1 of the present invention is shown.

[0021] Figure 4 A perspective view of the composite pile tip provided in Embodiment 1 of the present invention is shown.

[0022] Figure 5 A top view of the composite pile tip provided in Embodiment 1 of the present invention is shown.

[0023] Figure 6 A perspective view of the composite pile tip provided in Embodiment 1 of the present invention is shown.

[0024] Figure 7 The diagram shows a bottom view of the composite pile tip provided in Embodiment 1 of the present invention.

[0025] Figure 8 A cross-sectional view of the connection between the composite pile tip and the pipe body provided in Embodiment 1 of the present invention is shown.

[0026] Figure 9 The diagram shows a top view of the composite pile tip reinforcement member with a star-shaped structure provided in Embodiment 1 of the present invention.

[0027] Figure 10 A perspective view of the composite pile tip reinforcement provided in Embodiment 1 of the present invention is shown.

[0028] Figure 11 A schematic diagram of the pipe pile structure provided in Embodiment 2 of the present invention is shown.

[0029] The reference numerals in the detailed embodiments are as follows:

[0030] 100. Pipe body; 200. Composite pile tip; 21. Matrix; 211. First end face; 212. Second end face; 213. Reinforcing rib; 22. Arc-shaped wing plate; 221. Root; 222. Top; 223. Outer side; 224. First side; 225. Second side; 23. Reinforcing member; 231. Extension end. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. Example 1

[0032] Please see Figures 1-3 This embodiment provides a composite pile tip 200 to solve the technical problems existing in the use of conical pile tips and cross-shaped pile tips in the prior art. The composite pile tip 200 includes: a base 21 and at least two arc-shaped wing plates 22. The base 21 includes a first end face 211 and a second end face 212. The first end face 211 is used to fixally connect with the pipe body 100 of the pipe pile structure. The root 221 of the arc-shaped wing plate 22 is fixedly connected to the second end face 212 of the base 21. The arc-shaped wing plate 22 includes an outer surface 223, which is curved along the insertion direction of the arc-shaped wing plate 22. The arc-shaped wing plate 22 gradually decreases in size along the extension direction from the root 221 to the top 222.

[0033] Specifically, the substrate is a disc-shaped structure with a certain thickness. The first end face 211 is connected to the tube body 100, and the second end face 212 is used to support and fix the arc-shaped wing plate 22. The connection between the second end face 212 and the arc-shaped wing plate 22 includes welding, or the substrate 21 and the arc-shaped wing plate 22 are cast in one piece.

[0034] like Figure 8 As shown, the tube body 100 is hollow, and one end of the tube body 100 is connected to the first end face 211 by welding. At least two reinforcing ribs 213 are provided on the first end face 211. When two reinforcing ribs 213 are provided, the length direction of the two reinforcing members 23 is along the radius of the base body 21, and the included angle between the two reinforcing members 23 is 180°. When three reinforcing ribs 213 are provided, the included angle between two adjacent reinforcing ribs 213 is 120°. When four reinforcing ribs 213 are provided, the included angle between two adjacent reinforcing ribs 213 is 90°, and so on. The included angle between two adjacent reinforcing ribs 213 is the same, so as to avoid the base body 21 from being deformed by stress during construction when the tube body 100 is inserted.

[0035] The end of the reinforcing rib 213 near the inner wall of the pipe body 100 is connected to the inner wall of the pipe body 100. For example... Figure 7 As shown, multiple reinforcing ribs 213 are radially distributed on the first end face 211, with one end pointing towards the central axis of the base body 21 and the other end connected to the inner wall of the pipe body 100. This reduces the peak value of local stress during welding of the base body 21 and the pipe body 100, thereby reducing the risk of weld cracking. Simultaneously, the connection between the reinforcing ribs 213 and the inner wall of the pipe body 100 can, to a certain extent, reduce the energy of high-frequency impact vibrations on the pipe body 100, protecting the integrity of the concrete surface of the pipe body 100.

[0036] like Figure 2As shown, the root 221 of the arc-shaped wing plate 22 has a larger size, which ensures the stability of the connection between the root 221 and the base 21 when it is fixedly connected to the second end face 212, thus preventing the arc-shaped wing plate 22 from breaking when subjected to a large impact force. Figure 3 As shown, the overall size gradually decreases from the root 221 to the top 222, so that when the arc-shaped wing plate 22 cuts sand and gravel, the width of the outer side 223 that first contacts the sand and gravel gradually decreases, avoiding the problem in the prior art where the wing plate has insufficient hardness to support the cutting edge during the cutting process due to the uniform thickness of the wing plate.

[0037] During construction, the outer surface 223 first contacts and cuts the sand and gravel. As the pile tip continues to penetrate, the curved surface of the outer surface 223 guides the flow and discharge of sand and gravel, allowing the sand and gravel to move relative to the outer surface 223 along the curved surface, thus achieving rapid discharge of sand and gravel and avoiding affecting the installation of the pipe pile structure. At the same time, the curve of the outer surface 223 and the structural design that gradually decreases from the root 221 to the top 222 of the arc-shaped wing plate 22 make the area guiding the sand and gravel on the outer surface 223 tend to increase along the direction of soil discharge. This not only effectively guides the sand and gravel to be discharged to the outside, reducing the penetration resistance of the pile tip, but also allows the pile tip to quickly penetrate the sand and gravel, achieving rapid pile tip penetration and installation.

[0038] In one embodiment of this invention, the composite pile tip 200 includes two arc-shaped wing plates 22, which are installed on the same diameter of the base 21 and symmetrically distributed along this diameter. When the pile tip penetrates the ground, it generates a balanced radial force, significantly improving the verticality control of the pile. The two arc-shaped wing plates 22 are integrated to achieve connection, improving their bending resistance and ensuring they maintain their original shape during construction. By using two opposing outer surfaces 223 on the symmetrically arranged arc-shaped wing plates 22, sand and soil can be discharged along the curved surfaces of the two outer surfaces 223 when the pile tip penetrates.

[0039] In another embodiment of this utility model, the composite pile tip 200 includes three arc-shaped wing plates 22 (not shown in the figure), which are respectively disposed on the second end face 212 along the radius of the base 21. On this composite pile tip 200, the included angle between two adjacent arc-shaped wing plates 22 is the same. By uniformly distributing the three arc-shaped wing plates 22 on the second end face 212 of the base 21, the resulting balanced radial force helps maintain the verticality of the pile body, effectively improving the stability of the pile tip during penetration and preventing the pile tip from deflecting during penetration. The three arc-shaped wing plates 22 are connected through an integrated design, forming a robust integral structure, which greatly improves the bending resistance of the composite pile tip 200, ensuring that it maintains its original shape and function in complex construction environments.

[0040] In another embodiment of this utility model, such as Figure 2 As shown, the composite pile tip 200 includes four arc-shaped flanges 22, which are evenly distributed around the base 21. The included angle between adjacent arc-shaped flanges 22 on the composite pile tip 200 is the same. The use of four arc-shaped flanges 22 allows the pile tip to penetrate various soil types more smoothly during insertion, and the four curved outer surfaces 223 effectively discharge the penetrated soil, reducing penetration resistance and improving construction efficiency. The composite pile tip 200, formed by the integrated design of the four arc-shaped flanges 22, effectively prevents deformation or damage caused by external pressure when facing large axial and radial loads, ensuring construction quality and safety. The balanced radial force generated by the even distribution of the four arc-shaped flanges 22 helps maintain the verticality of the pipe pile structure, making it particularly suitable for complex geological conditions and effectively preventing pile tip deflection.

[0041] In this embodiment, as Figure 4 and Figure 5 As shown, the arc-shaped wing plate 22 also includes a first side surface 224 and a second side surface 225, which are adjacent to the outer side surface 223; wherein, as Figure 6As shown, the first side surface 224 and the second side surface 225 are curved along the insertion direction of the pipe pile structure. Specifically, the first side surface 224 and the second side surface 225 on the same arc-shaped wing plate 22 are symmetrically arranged on both sides of the radius of the base 21. When the outer side surface 223 cuts through the sand and gravel soil, the sand and gravel soil can flow smoothly out along the curved surfaces of the first side surface 224, the second side surface 225, and the outer side surface 223, realizing the diversion of sand and gravel soil and other materials, further enhancing the guiding effect of the arc-shaped wing plate 22 on the sand and gravel soil, and preventing sand and gravel from getting stuck between two adjacent arc-shaped wing plates 22, affecting the installation of the pile tip. At the same time, when the pipe pile structure tends to deviate due to uneven soil conditions, the symmetrical arrangement of the curved first side surface 224 and the second side surface 225 on both sides of the radius of the base 21 can automatically correct the verticality of the pipe pile structure, further enhancing the anti-deflection ability of the pipe pile structure.

[0042] In one implementation of this embodiment, such as Figure 1 As shown, the pile tip also includes a columnar reinforcing member 23, which extends along the insertion direction of the pipe pile structure, and the central axis of the reinforcing member 23 coincides with the central axis of the base 21. By providing a columnar reinforcing member 23 along the central axis of the base 21, the axial strength of the pile tip can be further enhanced. The curved flange 22 is connected to the reinforcing member 23 on the side near the central axis of the reinforcing member 23. To ensure the smooth penetration of the pile tip into the ground, the top 222 of the curved flange 22 on the pile tip is smaller than the root 221. The reinforcement member 23 enhances the strength of the curved flange 22 in the direction of pile tip penetration, improves the quality of the pile tip, and makes it suitable for hard and complex environments.

[0043] The reinforcing member 23 has a radial cross-section perpendicular to the central axis, meaning that multiple extension ends 231 extend outward from the outer surface of the reinforcing member 23. The number of extension ends 231 of the reinforcing member 23 can be set according to the number of arc-shaped wing plates 22. One side of an arc-shaped wing plate 22 parallel to the central axis is connected to one extension end 231, meaning that multiple arc-shaped wing plates 22 are arranged around the reinforcing member 23 and fixedly connected to the reinforcing member 23. When the composite pile tip 200 includes two arc-shaped wing plates 22, the reinforcing member 23 has two extension ends 231; when the composite pile tip 200 includes three arc-shaped wing plates 22, the reinforcing member 23 has three extension ends 231; when the composite pile tip 200 includes four arc-shaped wing plates 22, the reinforcing member 23 has four extension ends 231. During construction, the reinforcing member 23 can directly bear most of the impact load, protecting the arc-shaped wing plates 22 and the base 21, thereby improving the overall strength of the pile tip in the direction of the central axis.

[0044] The number of extension ends 231 of the reinforcing member 23 can be specifically selected according to the construction environment, for example, Figure 4As shown, when the composite pile tip 200 includes four arc-shaped flanges 22, the reinforcing member 23 needs to have four extension ends 231 connected to the four arc-shaped flanges 22. Simultaneously, to give the composite pile tip 200 greater strength to withstand more complex construction environments, such as... Figure 9 As shown, a cross-sectional reinforcing member 23 with a cross-sectional shape of X can be used to ensure the fixed connection of the arc-shaped wing plate 22, while further increasing the strength of the pile tip by increasing the number of extension ends 231.

[0045] In another implementation of this embodiment, the reinforcing member 23 is a cylinder or a cone, such as... Figure 10 As shown, the reinforcing member 23 is a cylindrical structure, with the extension end 231 located on the side of the cylinder and fixedly connected to one end of the arc-shaped wing plate 22. By setting the reinforcing member 23 as a cylinder or a cone, the strength of the pile tip can be further enhanced.

[0046] This embodiment solves the problems of existing single conical or cross-shaped pile tips by setting an arc-shaped wing plate 22 on the base 21. The outer surface 223 of the arc-shaped wing plate 22 is continuously curved along the insertion direction of the arc-shaped wing plate 22, so that when the pile tip penetrates the sand and gravel, the sand and gravel can be discharged along the surface of the outer surface 223, improving the soil discharge efficiency of the pile head. At the same time, the radial component force generated by the curved surface of the outer surface 223 can counteract the lateral compression of the soil and prevent the pile head from deflecting during penetration. Its overall structure starts from the root 22 The diameter of the cone-shaped wing plate 22 gradually decreases from the top 222, allowing for concentrated penetration and strong penetrating power. Simultaneously, the relatively large root 221 of the cone-shaped wing plate 22 reduces the possibility of breakage, improving its fatigue resistance. In soft soil, the curved surface of the outer side 223 and the gradual decrease in size from the root 221 to the top 222 result in a larger area of ​​the outer side 223 compared to a typical wing plate, increasing the contact area between the soft soil and the cone-shaped wing plate 22 to enhance guiding stability. In summary, this invention provides a composite pile tip with high penetration efficiency, stable guidance, strong soil removal capacity, and fatigue resistance, solving the technical problems of existing conical and cross-shaped pile tips. Example 2

[0047] like Figure 11As shown, based on Embodiment 1, this embodiment provides a pipe pile structure, which includes a pipe body 100 and any of the composite pile tips 200 provided in Embodiment 1. The composite pile tip 200 is fixedly connected to the pipe body 100. By setting an arc-shaped wing plate 22 on the base 21, the problems existing in the prior art of single conical pile tips and cross-shaped pile tips are solved, providing a pipe pile structure with efficient penetration, stable guidance, strong soil removal capacity, and fatigue resistance. It should be noted that, unless otherwise stated, the technical or scientific terms used in this embodiment of the present invention should have the ordinary meaning understood by those skilled in the art to which this embodiment pertains.

[0048] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0049] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0050] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0051] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A composite point, characterized in that The composite pile tip includes: The base includes a first end face and a second end face, wherein the first end face is used for fixed connection with the pipe body of the pipe pile structure; An arc-shaped wing plate, the root of which is fixedly connected to the second end face of the base, the arc-shaped wing plate includes an outer surface, the outer surface being curved along the insertion direction of the arc-shaped wing plate; The arc-shaped wing plate gradually decreases in size along the direction from the root to the top.

2. The composite point of claim 1, wherein, The arc-shaped wing plate also includes a first side surface and a second side surface, which are adjacent to the outer side surface. Furthermore, the first side and the second side are curved along the insertion direction of the pipe pile structure.

3. The composite pile tip according to claim 1, characterized in that, The first end face is provided with at least two reinforcing ribs.

4. The composite point of claim 3, wherein, The end of the reinforcing rib near the inner wall of the tube is connected to the inner wall of the tube.

5. The composite point of claim 1, wherein, The pile tip also includes a columnar reinforcing member that extends along the insertion direction of the pipe pile structure, and the central axis of the reinforcing member coincides with the central axis of the base.

6. The composite point of claim 5, wherein, The arc-shaped wing plate is connected to the reinforcement on the side near the central axis of the reinforcement.

7. The composite point of claim 5, wherein, The cross-section of the reinforcing member perpendicular to the central axis is radial.

8. The composite point of claim 6, wherein, The cross-sectional shape of the reinforcing member perpendicular to the central axis includes a star shape.

9. A pipe pile structure, characterized by The pipe pile structure includes: a composite pile tip as described in any one of claims 1-8, and a pipe body connected to the composite pile tip.

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