Friction pile and friction pile mold
By setting dense protruding and recessed groove structures on the sides of the friction pile, the problem of insufficient pull-up capacity of the friction pile is solved, and a production effect of greater friction and lower cost is achieved.
Patent Information
- Application Number
- CN202422756461.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The friction between the pile body and the soil layer of the existing friction piles is insufficient, the pull-up resistance is weak, and the existing structure is difficult to further improve the friction, and the production cost and efficiency are difficult to balance.
A dense protruding portion and a recessed groove structure are provided on the side of the pile body of the friction pile. The protruding portion and the recessed groove are parallel to each other. The recessed grooves are trapezoidal or rectangular in the vertical direction, increasing the contact area with the soil layer.
The friction pile resistance is improved, the friction force is increased, and the production efficiency is maintained and the processing cost of the mold is reduced.
Smart Images
Figure CN223293027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of civil engineering materials, and in particular to a friction pile and a friction pile mould. Background Art
[0002] Friction piles are a common material in civil engineering. They are suitable for use in soils with poor geological conditions and shallow bearing layers. The pile base is located in softer soil layers, and the axial load is supported by frictional resistance against the pile side and the reaction force of the soil at the base. The principle of friction piles relies primarily on the friction between the pile body and the surrounding soil. When the load of the superstructure acts on the top of the friction pile, the pile body moves downward and compresses the surrounding soil, generating friction to resist the load.
[0003] Friction pile designs often use pipe piles or bamboo piles. These pipe piles include round, square, or polygonal shapes. These piles have a relatively smooth surface and a less tight bond with the soil, resulting in less friction and insufficient pullout resistance. Bamboo piles, on the other hand, offer greater friction and pullout resistance than pipe piles of the same diameter. However, the distance between the two raised bamboo sections in a bamboo pile structure is still very large, and the number of bamboo sections that can be formed on a single bamboo pile is limited, making it difficult to further increase friction between the friction pile and the soil. Utility Model Content
[0004] The utility model aims to provide a new friction pile structure and a corresponding friction pile mold, which can reduce the intervals between protrusions generating friction force without affecting the production efficiency and cost of the friction pile.
[0005] In order to achieve the above-mentioned purpose, the technical solution of this utility model is:
[0006] A friction pile comprises a pile body, which is a polygonal pile; and a protrusion, which is protrudingly arranged on at least one side of the pile body; the protrusion is provided with a plurality of recessed grooves at a certain distance in the vertical direction, and the recessed grooves are parallel to each other.
[0007] In a preferred embodiment of the present invention, the recessed groove is trapezoidal in the vertical direction, and the shorter upper base of the trapezoid faces the pile body.
[0008] In a preferred embodiment of the present invention, the protrusion is rectangular in the axial direction of the pile body.
[0009] In a preferred embodiment of the present invention, the protrusion is trapezoidal in the axial direction of the pile body, with the lower base of the trapezoid facing the pile body, and two waists of the trapezoid being integrally connected to the polygonal side of the pile body.
[0010] In a preferred embodiment of the present invention, the upper edge and the lower edge of the recessed groove are parallel to each other.
[0011] In a preferred embodiment of the present invention, the upper edge and the lower edge of the recessed groove form an angle of 0° to 60° with the upper and lower end surfaces of the pile body.
[0012] In a preferred embodiment of the present invention, the depth of the recessed groove is less than or equal to the height of the protruding portion protruding from the pile body.
[0013] In a preferred embodiment of the present invention, the pile body is an octagonal pile.
[0014] In a preferred embodiment of the present invention, a through hole is provided in the center of the pile body from the top surface to the bottom surface.
[0015] The utility model also relates to a friction pile mold, which is used for manufacturing the above-mentioned friction pile. The shape of the friction pile mold is consistent with the contour shape of the friction pile.
[0016] Compared to existing pipe piles or bamboo piles, the friction piles of this invention have denser recesses, a larger contact area with the soil, greater friction, and better pullout resistance. Furthermore, the production process is simple, the shape is regular, and the mold making cost is lower.
[0017] In order to make the above features and advantages of the utility model more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the friction pile in Example 1 of the present utility model.
[0019] Figure 2 This is a side view of the friction pile of Example 1 of the present invention.
[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the friction pile in Example 2 of the present utility model.
[0021] Figure 4 This is a side view schematic diagram of the friction pile of Example 2 of the present utility model.
[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the friction pile in Example 3 of the present utility model.
[0023] Figure 6 This is a top view comparison diagram of Example 1 and Example 3.
[0024] Figure 7 This is a side view schematic diagram of the friction pile of Example 3 of the present utility model.
[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the friction pile in Example 4 of the present utility model.
[0026] Figure 9 It is a side view schematic diagram of the friction pile of Example 4 of the present utility model. DETAILED DESCRIPTION
[0027] In order to make the purpose and technical solution of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front, back, bottom, top, etc., are only reference to the directions of the attached drawings. Therefore, the directional terms used are for illustration, not for limitation of the present invention.
[0028] The utility model relates to a new friction pile structure, which improves the pull-out resistance of the friction pile by adding convex blocks and concave grooves arranged at intervals on the side of the friction pile.
[0029] Example 1
[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the friction pile of Example 1 of the present utility model. Figure 1 As shown, the friction pile 100 includes a pile body 110, which is a polygonal pile, and a protrusion 120, which is protruding from at least one side of the pile body 110. The protrusion 120 in Example 1 is rectangular in the axial direction of the pile body 110.
[0031] Figure 2 Schematic side view of the friction pile of Example 1 of the present utility model. Figure 2 As shown, the protrusion 120 is provided with a plurality of recessed grooves 121 spaced at a certain distance in the vertical direction, and the recessed grooves 121 are parallel to each other. The depth of the recessed grooves 121 is less than or equal to the height of the protrusion 120 protruding from the pile body 110.
[0032] In Example 1, the upper and lower edges of the recessed groove 121 are parallel to the upper and lower end surfaces of the pile body 110 .
[0033] like Figure 2As shown, the vertical height h1 of the recessed groove 121 is preferably 100-200 mm, more preferably 120 mm. The distance a1 between the outermost recessed groove 121 and the end of the friction pile 100 is preferably 0-1000 mm, more preferably 500 mm.
[0034] Preferably, the recessed groove 121 is trapezoidal in the vertical direction, with the shorter upper base of the trapezoid facing the pile body 110. When manufacturing the friction pile 100, such a configuration facilitates removing the friction pile 100 from the mold and prevents the friction pile 100 from being stuck in the mold.
[0035] The pile body 110 in Example 1 is preferably an octagonal pile. The pile body 110 is provided with a through hole 111 in the center from the top surface to the bottom surface, and the through hole 111 is preferably circular.
[0036] Example 2
[0037] Figure 3 This is a schematic diagram of the three-dimensional structure of the friction pile of Example 2 of the present utility model. Figure 3 As shown, the friction pile 200 includes a pile body 210, which is a polygonal pile, and a protrusion 220, which is protruding from at least one side of the pile body 210. The protrusion 220 in Example 2 is rectangular in the axial direction of the pile body 210.
[0038] Figure 4 This is a side view of the friction pile of Example 2 of the present utility model. Figure 4 As shown, the protrusion 220 is provided with a plurality of recessed grooves 221 spaced at a certain distance in the vertical direction, and the recessed grooves 221 are parallel to each other. The depth of the recessed grooves 221 is less than or equal to the height of the protrusion 220 protruding from the pile body 210.
[0039] The difference between Example 2 and Example 1 is that the upper and lower edges of the recessed groove 221 are parallel to each other but form a certain angle with the upper and lower end surfaces of the pile body 110. The angle θ2 between the upper and lower edges of the recessed groove 221 and the upper and lower end surfaces of the pile body 110 is preferably 0° to 60°, with the angle θ2 preferably being 45°. The angle θ2 of 0° is consistent with the design of Example 1.
[0040] like Figure 4As shown, the vertical height h2 of the recessed groove 221 is preferably 100-200 mm, more preferably 120 mm. The vertical distance b2 between the highest and lowest points of a single recessed groove 221 is preferably 100-1000 mm, more preferably 500 mm. The distance a2 between the outermost recessed groove 221 and the end of the friction pile 200 is preferably 0-1000 mm, more preferably 500 mm.
[0041] Preferably, the recessed groove 221 is trapezoidal in the vertical direction, with the shorter upper base of the trapezoid facing the pile body 210. When manufacturing the friction pile 200, such a configuration facilitates removing the friction pile 200 from the mold and prevents the friction pile 200 from being stuck in the mold.
[0042] The pile body 210 in Example 2 is preferably an octagonal pile. The pile body 210 is provided with a through hole 211 from the top surface to the center of the bottom surface. The through hole 211 is preferably circular.
[0043] Example 3
[0044] Figure 5 This is a schematic diagram of the three-dimensional structure of the friction pile of Example 3 of the present utility model. Figure 4 As shown, the friction pile 300 includes a pile body 310 , which is a polygonal pile; and a protrusion 320 , which is protruding from at least one side of the pile body 310 .
[0045] Figure 6 This is a top view comparison diagram of Example 1 and Example 3. Figure 6 As shown, Figure 6 Part (a) is a top view of Example 1. Figure 6 Part (b) is a top view of Example 3. Figure 6 In the embodiment 3, the dotted line separates the pile body and the protrusion. The difference between embodiment 1 and embodiment 3 is that the protrusion 320 is trapezoidal in the axial direction of the pile body 310, with the lower base of the trapezoid facing the pile body 310, and the two waists of the trapezoid are connected to the polygonal side of the pile body 310. Figure 6 In the figure, the dotted line represents the difference between Example 1 and Example 3. In Example 3, based on Example 1, the two first right angles 122 on the outer sides of the protrusion 120 in Example 1 are removed to form the first waist 322 in Example 3. The two first waists 322 are respectively parallel to the adjacent side edges of the pile body 310 and are connected as one.
[0046] When manufacturing the friction pile 300 , the modification of the shape of the protrusion 320 in Example 3 makes it easier to remove the friction pile 300 from the mold, and the mold processing process is also simpler, which can more effectively reduce production costs.
[0047] Figure 7 This is a side view of a friction pile according to Example 3 of the present invention. Figure 7 As shown, the protrusion 320 is provided with a plurality of recessed grooves 321 spaced at a certain distance in the vertical direction, and the recessed grooves 321 are parallel to each other. The depth of the recessed grooves 321 is less than or equal to the height of the protrusion 320 protruding from the pile body 310.
[0048] In the third embodiment, the upper and lower edges of the recessed groove 321 are parallel to the upper and lower end surfaces of the pile body 310 .
[0049] like Figure 7 As shown, the vertical height h3 of the recessed groove 321 is preferably 100-200 mm, more preferably 120 mm. The distance a3 between the outermost recessed groove 321 and the end of the friction pile 300 is preferably 0-1000 mm, more preferably 500 mm.
[0050] Preferably, the recessed groove 321 is trapezoidal in the vertical direction, with the shorter upper base of the trapezoid facing the pile body 310. When manufacturing the friction pile 300, such a configuration facilitates removing the friction pile 300 from the mold and prevents the friction pile 300 from being stuck in the mold.
[0051] The pile body 310 in Example 3 is preferably an octagonal pile. The pile body 310 is provided with a through hole 311 in the center from the top surface to the bottom surface. The through hole 311 is preferably circular.
[0052] Example 4
[0053] Figure 8 This is a schematic diagram of the three-dimensional structure of the friction pile of Example 4 of the present utility model. Figure 8 As shown, the friction pile 400 includes a pile body 410, which is a polygonal pile; and a protrusion 420, which is protruding from at least one side of the pile body 410. The protrusion 420 is trapezoidal in the axial direction of the pile body 410, with the lower base of the trapezoid facing the pile body 410, and the two sides of the trapezoid connected to the polygonal side of the pile body 410. The top view of Example 4 is consistent with Example 3, and can be referred to Figure 6 The shape of the protrusion 420 in Example 4 is clarified by the top view comparison diagram.
[0054] Figure 9This is a side view of a friction pile according to Example 4 of the present invention. Figure 9 As shown, the protrusion 420 is provided with a plurality of recessed grooves 421 spaced at a certain distance in the vertical direction, and the recessed grooves 421 are parallel to each other. The depth of the recessed grooves 421 is less than or equal to the height of the protrusion 420 protruding from the pile body 410.
[0055] The difference between Example 4 and Example 3 is that the upper and lower edges of the recessed groove 421 are parallel to each other, but form a certain angle with the upper and lower end surfaces of the pile body 410. The angle θ4 between the upper and lower edges of the recessed groove 421 and the upper and lower end surfaces of the pile body 410 is preferably 0° to 60°, and the angle θ4 is preferably 45°. The case where the angle θ4 is 0° is consistent with the design of Example 3.
[0056] like Figure 9 As shown, the vertical height h4 of the recessed groove 421 is preferably 100-200 mm, more preferably 120 mm. The vertical distance b4 between the highest and lowest points of a single recessed groove 421 is preferably 100-1000 mm, more preferably 500 mm. The distance a4 between the outermost recessed groove 421 and the end of the friction pile 400 is preferably 0-1000 mm, more preferably 500 mm.
[0057] Preferably, the recessed groove 421 is trapezoidal in the vertical direction, with the shorter upper base of the trapezoid facing the pile body 410. When manufacturing the friction pile 400, such a configuration facilitates removing the friction pile 400 from the mold and prevents the friction pile 400 from being stuck in the mold.
[0058] The pile body 410 in Example 4 is preferably an octagonal pile. The pile body 410 is provided with a through hole 411 in the center from the top surface to the bottom surface. The through hole 411 is preferably circular.
[0059] The friction piles in the above embodiments are all produced using molds that conform to their outer contours. Once the molds are prepared, concrete is poured into the molds and the molds are axially adjusted to evenly distribute the concrete along the mold walls. The resulting piles will have the aforementioned protrusions and recesses.
[0060] The friction piles of this utility model are provided with protrusions and recessed grooves on the pile wall. When the pile is engaged with the soil layer, the soil is filled into the recessed groove under pressure, further enhancing the pile's pullout resistance. The angled recessed grooves of Examples 2 and 4 facilitate soil entry into the recessed grooves when pressed into the soil layer, making construction more convenient than the solutions of Examples 1 and 3. Furthermore, due to the angle of the recessed grooves, when the friction pile is subjected to a pulling force, the angled recessed grooves squeeze the soil, making it more difficult to pull out, further enhancing the pile's pullout resistance.
[0061] In summary, compared to existing pipe piles or bamboo piles, the friction piles of this utility model have denser grooves, a larger contact area with the soil layer, greater friction, and better pullout resistance. Furthermore, the production process is simple, the shape is regular, and the mold making cost is also lower.
[0062] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Anyone with ordinary skill in the art may make slight modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended patent applications.
Claims
1. A friction pile, characterized in that: include, a pile body, wherein the pile body is a polygonal pile; and a protrusion, the protrusion being protrudingly provided on at least one side of the pile body; A plurality of concave grooves are arranged at a certain distance in the vertical direction of the protruding portion, and the concave grooves are parallel to each other.
2. The friction pile according to claim 1, characterized in that The recessed groove is trapezoidal in the vertical direction, and the shorter upper base of the trapezoid faces the pile body.
3. The friction pile according to claim 1, characterized in that The protrusion is rectangular in the axial direction of the pile body.
4. The friction pile according to claim 1, wherein: The protrusion is trapezoidal in the axial direction of the pile body, with the lower base of the trapezoid facing the pile body, and two waists of the trapezoid being integrally connected with the polygonal side edges of the pile body.
5. The friction pile according to claim 1, wherein: The upper edge and the lower edge of the concave groove are parallel to each other.
6. The friction pile according to claim 5, characterized in that The upper edge and the lower edge of the recessed groove form an angle of 0° to 60° with the upper and lower end surfaces of the pile body.
7. The friction pile according to claim 1, wherein: The depth of the recessed groove is less than or equal to the height of the protruding portion protruding from the pile body.
8. The friction pile according to claim 1, wherein: The pile body is an octagonal pile.
9. The friction pile according to claim 1, wherein: The pile body is provided with a through hole from the top surface to the center of the bottom surface.
10. A friction pile mold, characterized in that: Used for manufacturing the friction pile according to any one of claims 1 to 9, the shape of the friction pile mold is consistent with the contour shape of the friction pile.