Anchor rod pile structure
By using a three-section steel pipe pile structure and plug-in components, the friction and constraint effect between the anchor pile and the soil are enhanced, solving the problem of insufficient bearing capacity of a single steel pipe pile in the existing technology and improving the stability of the foundation.
Patent Information
- Application Number
- CN202423106313.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-16
AI Technical Summary
In existing technologies, the friction between anchor piles and soil is limited, resulting in insufficient bearing capacity of a single steel pipe pile and making it difficult to effectively improve the stability of the foundation.
The structure adopts a three-section steel pipe pile structure. The third steel pipe pile section has a larger diameter and a smaller angle between the guide surface and the horizontal plane. Combined with the plug-in assembly and the limiting ring, the plug-in rod is inserted into the soil and fixed by concrete pouring to enhance the soil constraint effect.
It increases the bearing capacity of a single anchor pile, reduces soil compression and diffusion, enhances the support effect of the foundation, and improves the stability of the foundation.
Smart Images
Figure CN223548552U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building foundation engineering technology, and in particular to an anchor pile structure. Background Technology
[0002] Anchor piles are a type of structure used to reinforce building foundations in order to reduce uneven settlement of the foundation.
[0003] A pile driver is a construction device that drives anchor piles into the soil. It consists of a pile driving reaction frame and jacks. Workers use anchor rods fixed in the foundation to anchor the pile driving reaction frame to the existing building structure foundation or the newly added reaction beam. Then, the jacks drive precast steel pipe piles or reinforced concrete piles into the soil. Finally, the anchor piles are fixedly connected to the existing foundation. This allows the anchor piles to bear part of the building load, achieving the purpose of reinforcing the foundation, improving its stability, and reducing uneven settlement.
[0004] In existing technologies, the main method of bearing the load from the superstructure is through the friction between the anchor pile and the soil, thus achieving the effect of foundation reinforcement. However, the limited friction between the steel pipe pile and the soil restricts the bearing capacity of a single steel pipe pile. Utility Model Content
[0005] To improve the bearing capacity of a single anchor pile, this application provides an anchor pile structure.
[0006] This application provides an anchor pile structure, which adopts the following technical solution:
[0007] An anchor pile structure, wherein the anchor pile is pressed into the foundation by a pile driver, and the tail of the anchor pile is fixedly connected to the foundation of the existing building.
[0008] Along the vertically upward direction, the anchor pile includes a first steel pipe pile segment, a second steel pipe pile segment, and a third steel pipe pile segment that are welded and fixed in sequence. The first, second, and third steel pipe pile segments are coaxially arranged. The first steel pipe pile segment has a first guide surface on the side away from the second steel pipe pile segment. Along the vertically downward direction, the distance from the first guide surface to the central axis of the first steel pipe pile segment decreases. The outer diameter of the second steel pipe pile segment is the same as the outer diameter of the first steel pipe pile segment. The outer diameter of the third steel pipe pile segment is larger than the diameter of the second steel pipe pile segment. The second steel pipe pile segment has a third guide surface on the side closer to the second steel pipe pile segment. Along the vertically downward direction, the distance from the third guide surface to the central axis of the first steel pipe pile segment decreases, and the angle between the third guide surface and the horizontal plane is smaller than the angle between the first guide surface and the horizontal plane.
[0009] By adopting the above technical solution, the diameter of the third steel pipe pile segment is larger, enabling it to exert a greater influence on the soil in the foundation. Simultaneously, the angle between the third guide surface of the third steel pipe pile segment and the horizontal plane is smaller, reducing the outward squeezing effect of the third guide surface on the soil, thereby improving the foundation's support effect on the third steel pipe pile segment, and thus increasing the bearing capacity of a single anchor pile.
[0010] Optionally, the anchor pile further includes a plug-in assembly, which is disposed within the first steel pipe pile segment and is bonded and fixed to the first steel pipe pile segment; the plug-in assembly includes a fixing plate and plug-in rods, and a plurality of plug-in rods are provided, which are fixed at intervals on the side of the fixing plate away from the second steel pipe pile segment; the first guide surface is provided with a plurality of first through holes, and the plug-in rods are inserted through the first through holes to be inserted into the soil.
[0011] By adopting the above technical solution, when the pile driver presses the anchor pile into the soil, and then presses the plug-in assembly into the soil, the plug-in rod passes through the first through hole on the first guide surface and is inserted into the soil at the bottom of the first guide surface. Therefore, when the first guide surface transmits pressure to the soil, the plug-in rod has a restraining effect on the soil, reducing the degree of soil particle rearrangement and thus reducing the compression and expansion of the soil at the bottom of the first guide surface; that is, it improves the soil's support effect on the anchor pile and increases the bearing capacity of a single anchor pile.
[0012] Optionally, the plug-in assembly further includes a limiting ring, which is horizontally positioned and welded to the inner wall of the first steel pipe pile segment. When the limiting ring abuts against the fixing plate, the plug-in rod blocks the first through hole.
[0013] By adopting the above technical solution, the position of the plug-in component is constrained by the limiting ring, so that the plug-in rod blocks the first through hole during the process of the anchor pile being pressed into the soil; reducing the amount of soil entering the interior of the first steel pipe pile section, so as to facilitate the subsequent pressing of the plug-in rod into the soil.
[0014] Optionally, the anchor pile also includes a concrete body, which fills the bottom of the first steel pipe pile segment, and the limiting ring is embedded in the concrete body, which is in contact with the fixing plate.
[0015] By adopting the above technical solution, concrete is poured into the first steel pipe pile section, and the position of the plug-in component is fixed by the concrete and the limiting ring, thereby improving the constraint effect of the plug-in rod on the soil and reducing the spread of soil at the bottom of the first guide surface to the surrounding area.
[0016] Optionally, the fixing plate has several through holes for the concrete to pass through, and the fixing plate and the plug rod are embedded in the concrete body.
[0017] By adopting the above technical solution, through holes are made in the fixing plate, so that concrete fills the space between the fixing plate and the first guide surface, thereby improving the fixing effect of the concrete on the plug-in component.
[0018] Optionally, the plug-in rod includes a first rod and a second rod, the first rod and the second rod are integrally formed, the first rod is fixedly connected to the fixing plate, and the diameter of the first rod is smaller than the diameter of the first through hole.
[0019] By adopting the above technical solution, the diameter of the first member is smaller than the diameter of the first through hole. Thus, when the concrete is poured, the concrete slurry will penetrate through the gap between the first member and the first through hole into the soil at the bottom of the first guide surface. This utilizes the soil fixation effect of the solidified concrete slurry to reduce the degree of soil rearrangement after stress, thereby improving the support effect of the foundation on the anchor pile.
[0020] Optionally, along the length of the second steel pipe pile segment, a plurality of second through holes are spaced apart on the outer periphery of the second steel pipe pile segment.
[0021] By adopting the above technical solution, several second through holes are opened on the outer periphery of the second steel pipe pile segment to increase the friction between the second steel pipe pile segment and the soil, thereby increasing the bearing capacity of a single anchor pile.
[0022] Optionally, along the length of the third steel pipe pile segment, a plurality of friction protrusions are provided at intervals on the outer periphery of the third steel pipe pile segment, and the friction protrusions are welded and fixed to the third steel pipe pile segment.
[0023] By adopting the above technical solution, friction convex rings are set on the outer periphery of the third steel pipe pile segment to increase the friction between the third steel pipe pile segment and the soil, thereby increasing the bearing capacity of a single anchor pile.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] 1. The larger diameter of the third steel pipe pile segment allows it to exert a greater influence on the soil in the foundation. At the same time, the smaller angle between the third guide surface of the third steel pipe pile segment and the horizontal plane reduces the effect of the third guide surface squeezing the soil outward, thereby improving the support effect of the foundation on the third steel pipe pile segment, which in turn increases the bearing capacity of a single anchor pile.
[0026] 2. When the pile driver presses the anchor pile into the soil, the plug-in assembly is then pressed into the soil, so that the plug-in rod passes through the first through hole on the first guide surface and is inserted into the soil at the bottom of the first guide surface. Thus, when the first guide surface transmits pressure to the soil, the plug-in rod has a restraining effect on the soil, reducing the degree of soil particle rearrangement and minimizing the compression and expansion of the soil at the bottom of the first guide surface; that is, it improves the soil's support effect on the anchor pile and increases the bearing capacity of a single anchor pile.
[0027] 3. By pouring concrete into the first steel pipe pile segment, the position of the plug assembly is fixed by the concrete and the limiting ring, which improves the constraint effect of the plug rod on the soil, reduces the spread of soil at the bottom of the first guide surface, and further improves the bearing capacity of a single anchor pile. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the anchor pile structure in Example 1.
[0029] Figure 2 This is a schematic diagram of the anchor pile structure in Example 2.
[0030] Figure 3 This is a schematic diagram of the first state of the anchor pile structure in Example 3.
[0031] Figure 4 yes Figure 3 Enlarged view of point A in the middle.
[0032] Figure 5 This is a schematic diagram of the second state of the anchor pile structure in Example 3.
[0033] Figure 6 This is a schematic diagram of the anchor pile structure in Example 4.
[0034] Explanation of reference numerals in the attached drawings: 1. First steel pipe pile segment; 11. First guide surface; 111. First through hole; 2. Second steel pipe pile segment; 21. Second through hole; 3. Third steel pipe pile segment; 31. Third guide surface; 32. Friction convex ring; 4. Insertion assembly; 41. Fixing plate; 411. Through hole; 42. Insertion rod; 421. First rod; 422. Second rod; 5. Limiting ring; 6. Concrete body; 7. Foundation; 8. Substructure. Detailed Implementation
[0035] The following is in conjunction with the appendix Figure 1 Section 6 provides further details regarding this application.
[0036] Example 1
[0037] This application discloses an anchor pile structure. (Refer to...) Figure 1The anchor piles are driven into the foundation 7 by a pile driver, and the tail of the anchor pile is fixedly connected to the foundation 8 of the original building.
[0038] The pile driver includes a pile driving reaction frame and jacks. Workers use anchor rods fixed in the foundation 8 to anchor the pile driving reaction frame to the existing building structure foundation 8 or the newly added reaction beam. Subsequently, the jacks press the precast anchor piles into the soil. Finally, the anchor piles are fixedly connected to the existing foundation 8. The construction technology of the anchor piles is existing technology and will not be described in detail in this application.
[0039] Reference Figure 1 Along the vertical upward direction, the anchor pile includes a first steel pipe pile segment 1, a second steel pipe pile segment 2, and a third steel pipe pile segment 3 that are welded and fixed in sequence. The first steel pipe pile segment 1, the second steel pipe pile segment 2, and the third steel pipe pile segment 3 are arranged coaxially.
[0040] Reference Figure 1 A first guide surface 11 is provided on the side of the first steel pipe pile segment 1 away from the second steel pipe pile segment 2. The distance from the first guide surface 11 to the central axis of the first steel pipe pile segment 1 decreases along the vertically downward direction. The outer diameter of the second steel pipe pile segment 2 is the same as the outer diameter of the first steel pipe pile segment 1. The outer diameter of the third steel pipe pile segment 3 is larger than the diameter of the second steel pipe pile segment 2. A third guide surface 31 is provided on the side of the second steel pipe pile segment 2 closer to the second steel pipe pile segment 2. The distance from the third guide surface 31 to the central axis of the first steel pipe pile segment 1 decreases along the vertically downward direction. In this embodiment, the angle between the third guide surface 31 and the horizontal plane is smaller than the angle between the first guide surface 11 and the horizontal plane.
[0041] The implementation principle of an anchor pile structure disclosed in this application is as follows:
[0042] Reference Figure 1 The larger diameter of the third steel pipe pile segment 3 allows it to exert a greater influence on the soil within the foundation 7. Simultaneously, the smaller angle between the third guide surface 31 of the third steel pipe pile segment 3 and the horizontal plane reduces the outward squeezing effect of the guide surface 31 on the soil, thereby improving the support effect of the foundation 7 on the third steel pipe pile segment 3, and thus increasing the bearing capacity of a single anchor pile.
[0043] Example 2
[0044] The difference between Example 2 and Example 1 is as follows:
[0045] Reference Figure 2 Along the length of the second steel pipe pile segment 2, a number of second through holes 21 are spaced apart on the outer periphery of the second steel pipe pile segment 2. By opening a number of second through holes 21 on the outer periphery of the second steel pipe pile segment 2, the friction between the second steel pipe pile segment 2 and the soil is increased, thereby improving the bearing capacity of a single anchor pile.
[0046] Reference Figure 2 Furthermore, along the length of the third steel pipe pile segment 3, several friction protrusions 32 are spaced apart on the outer periphery of the third steel pipe pile segment 3. The friction protrusions 32 are welded and fixed to the third steel pipe pile segment 3. The friction protrusions 32 can increase the friction between the third steel pipe pile segment 3 and the soil, thereby increasing the bearing capacity of a single anchor pile.
[0047] Example 3
[0048] The difference between Example 3 and Example 2 is as follows:
[0049] Reference Figure 3 and Figure 4 The anchor pile also includes a plug-in component 4, which is installed inside the first steel pipe pile section 1 and is bonded and fixed to the first steel pipe pile section 1.
[0050] Reference Figure 3 and Figure 4 The plug-in assembly 4 includes a fixing plate 41 and plug-in rods 42. Several plug-in rods 42 are provided, and the several plug-in rods 42 are fixed at intervals on the side of the fixing plate 41 away from the second steel pipe pile segment 2. The several plug-in rods 42 are arranged in a ring. The first guide surface 11 has several first through holes 111, and the plug-in rods 42 pass through the first through holes 111 to be inserted into the soil.
[0051] Reference Figure 4 and Figure 5 In addition, the anchor pile also includes a limiting ring 5 and a concrete body 6. The limiting ring 5 is horizontally set and welded to the inner wall of the first steel pipe pile segment 1. When the limiting ring 5 abuts against the fixing plate 41, the insertion rod 42 blocks the first through hole 111. The worker first places the insertion assembly 4 inside the first steel pipe pile segment 1, so that the insertion rod 42 blocks the first through hole 111; then, the worker can use adhesive to spot-bond the fixing plate 41, the insertion rod 42 and the first steel pipe pile segment 1. Recently, the worker welded and fixed the limiting ring 5 to the inside of the first steel pipe pile segment 1, and the limiting ring 5 was bonded and fixed to the fixing plate 41.
[0052] Reference Figure 4 and Figure 5 After the pile driver presses the anchor pile into the soil of the foundation 7, a small-diameter extrusion steel pipe is placed inside the anchor pile. The end of the extrusion steel pipe abuts against the fixing plate 41. The pile driver uses the extrusion steel pipe to press the insertion assembly 4 downward, thereby inserting the insertion rod 42 into the soil at the bottom of the first guide surface 11.
[0053] Reference Figure 4 and Figure 5In this embodiment, the fixing plate 41 has several through holes 411 for concrete to pass through. The concrete body 6 is filled at the bottom of the first steel pipe pile section 1, and the limiting ring 5, the fixing plate 41 and the plug rod 42 are embedded in the concrete body 6.
[0054] The implementation principle of an anchor pile structure disclosed in this application is as follows:
[0055] Reference Figure 4 and Figure 5 When the pile driver presses the anchor pile into the soil, the insertion assembly 4 is then pressed into the soil, so that the insertion rod 42 passes through the first through hole 111 on the first guide surface 11 and is inserted into the soil at the bottom of the first guide surface 11. Thus, when the first guide surface 11 transmits pressure to the soil, the insertion rod 42 has a restraining effect on the soil, which can reduce the degree of rearrangement of soil particles, thereby reducing the compression and outward expansion of the soil at the bottom of the first guide surface 11; that is, it improves the support effect of the soil on the anchor pile and increases the bearing capacity of a single anchor pile.
[0056] The limiting ring 5 constrains the position of the plug assembly 4, so that during the process of the anchor pile being pressed into the soil, the plug rod 42 blocks the first through hole 111; reducing the amount of soil entering the interior of the first steel pipe pile segment 1, so as to facilitate the subsequent pressing of the plug rod 42 into the soil.
[0057] Reference Figure 4 and Figure 5 The concrete body 6, the limiting ring 5, and the fixing plate 41 are fixedly connected, thereby fixing the position of the plug assembly 4, improving the constraint effect of the plug rod 42 on the soil, reducing the spread of soil at the bottom of the first guide surface 11 to the surrounding area, and improving the bearing capacity of a single anchor pile.
[0058] Example 4
[0059] The difference between Example 4 and Example 3 is as follows:
[0060] Reference Figure 6 The plug rod 42 includes a first rod 421 and a second rod 422. The first rod 421 and the second rod 422 are integrally formed. The first rod 421 is fixedly connected to the fixing plate 41. The diameter of the first rod 421 is smaller than the diameter of the first through hole 111.
[0061] The implementation principle of an anchor pile structure disclosed in this application is as follows:
[0062] The diameter of the first member 421 is smaller than the diameter of the first through hole 111. Therefore, when the concrete body 6 is poured, the concrete slurry will penetrate through the gap between the first member 421 and the first through hole 111 and seep into the soil at the bottom of the first guide surface 11. This utilizes the soil fixation effect of the concrete slurry after solidification to reduce the degree of soil rearrangement after stress, thereby improving the support effect of the foundation 7 on the anchor pile.
[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An anchor pile structure, wherein the anchor pile is driven into the foundation (7) by a pile driver, and the tail of the anchor pile is fixedly connected to the foundation (8) of the existing building; characterized in that: Along the vertically upward direction, the anchor pile includes a first steel pipe pile segment (1), a second steel pipe pile segment (2), and a third steel pipe pile segment (3) that are welded and fixed in sequence. The first steel pipe pile segment (1), the second steel pipe pile segment (2), and the third steel pipe pile segment (3) are coaxially arranged. A first guide surface (11) is provided on the side of the first steel pipe pile segment (1) away from the second steel pipe pile segment (2). Along the vertically downward direction, the distance from the first guide surface (11) to the central axis of the first steel pipe pile segment (1) decreases. The outer diameter of the pipe pile segment (2) is the same as that of the first steel pipe pile segment (1). The outer diameter of the third steel pipe pile segment (3) is larger than that of the second steel pipe pile segment (2). The second steel pipe pile segment (2) is provided with a third guide surface (31) on the side close to the second steel pipe pile segment (2). Along the vertical downward direction, the distance from the third guide surface (31) to the central axis of the first steel pipe pile segment (1) decreases, and the angle between the third guide surface (31) and the horizontal plane is smaller than the angle between the first guide surface (11) and the horizontal plane.
2. The anchor pile structure according to claim 1, characterized in that: The anchor pile also includes a plug-in assembly (4), which is disposed in the first steel pipe pile segment (1) and is bonded and fixed to the first steel pipe pile segment (1). The plug-in assembly (4) includes a fixing plate (41) and a plug-in rod (42). There are several plug-in rods (42), which are fixed at intervals on the side of the fixing plate (41) away from the second steel pipe pile segment (2). The first guide surface (11) has several first through holes (111), and the plug-in rods (42) pass through the first through holes (111) to be inserted into the soil.
3. The anchor pile structure according to claim 2, characterized in that: The plug-in assembly (4) also includes a limiting ring (5), which is horizontally set and welded to the inner wall of the first steel pipe pile segment (1). When the limiting ring (5) abuts against the fixing plate (41), the plug-in rod (42) blocks the first through hole (111).
4. The anchor pile structure according to claim 3, characterized in that: The anchor pile also includes a concrete body (6), which fills the bottom of the first steel pipe pile segment (1), and the limiting ring (5) is embedded in the concrete body (6), and the concrete body (6) is in contact with the fixing plate (41).
5. The anchor pile structure according to claim 4, characterized in that: The fixing plate (41) has several through holes (411) for concrete to pass through, and the fixing plate (41) and the plug rod (42) are embedded in the concrete body (6).
6. The anchor pile structure according to claim 5, characterized in that: The plug rod (42) includes a first rod (421) and a second rod (422). The first rod (421) and the second rod (422) are integrally formed. The first rod (421) is fixedly connected to the fixing plate (41). The diameter of the first rod (421) is smaller than the diameter of the first through hole (111).
7. The anchor pile structure according to claim 1, characterized in that: Along the length of the second steel pipe pile segment (2), a number of second through holes (21) are provided at intervals on the outer periphery of the second steel pipe pile segment (2).
8. The anchor pile structure according to claim 1, characterized in that: Along the length of the third steel pipe pile segment (3), a number of friction protrusions (32) are provided at intervals on the outer periphery of the third steel pipe pile segment (3), and the friction protrusions (32) are welded and fixed to the third steel pipe pile segment (3).