Stably-connected special-shaped uplift square pile
By coordinating and connecting the upper tension pile, the lower tension pile, and the grouting components, and utilizing the solidification of concrete grout, the problem of easy separation at the connection of the tension precast piles is solved, achieving efficient and stable pile foundation connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-27
AI Technical Summary
During the driving process, the joints of existing precast anti-tension piles are prone to detachment, resulting in insufficient pile strength and construction efficiency.
The method of connecting upper tension piles, lower tension piles and grouting components is adopted. Through the design of connecting steel bars, insertion pipes and grouting pipes, stable connection is achieved by using concrete grout solidification.
It improves the splicing strength and construction efficiency of precast piles with tensile strength, and enhances the stability and reliability of the connection.
Smart Images
Figure CN224048122U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of pile foundation construction, in particular to a special-shaped anti-pulling square pile with stable connection. BACKGROUND
[0002] In building pile foundation engineering, the anti-pulling pile is widely used in underground space development engineering as a commonly used pile type. With the development of underground space being deeper and deeper, the requirement for anti-pulling bearing capacity is higher and higher. The special-shaped pile is changed in cross-sectional shape on the basis of the structure of a traditional pile body, and can effectively increase the anti-pulling force of the pile foundation.
[0003] At present, the pile connection process of the prefabricated pile mainly includes sulfur cement, welding method, flange connection method, meshing type, buckle type and hoop type, and the pile connection method of the anti-pulling pile is mainly the welding method. The end of the prefabricated pile is provided with a pile end steel plate, and when two adjacent prefabricated piles are connected, the two pile end steel plates can be welded together, so that the pile connection operation of the prefabricated pile is realized.
[0004] According to the related technology in the above, the inventor considers that the anti-pulling prefabricated pile in the above has the possibility of disconnection at the connection position under the action of the pile driving force during the pile driving process. After the anti-pulling prefabricated pile is driven into the soil layer, the welded position of the two adjacent anti-pulling prefabricated piles is also prone to disconnection under the action of the pulling force. CONTENT OF THE UTILITY MODEL
[0005] In order to improve the pile connection strength and construction efficiency of the anti-pulling prefabricated pile, the application provides a special-shaped anti-pulling square pile with stable connection.
[0006] The special-shaped anti-pulling square pile with stable connection provided by the application adopts the following technical scheme:
[0007] The application discloses a stable connecting special-shaped anti-pulling square pile, which comprises an upper anti-pulling pile, a lower anti-pulling pile and a grouting assembly, the upper anti-pulling pile is arranged in line and vertically above the lower anti-pulling pile, a connecting steel bar is arranged in the lower anti-pulling pile along the length direction of the lower anti-pulling pile, the top end of the connecting steel bar extends out of the top end of the lower anti-pulling pile, the grouting assembly comprises a grouting pipe, a slurry outlet pipe, a plug-in pipe and a first communication pipe, the grouting pipe and the slurry outlet pipe are arranged in the upper anti-pulling pile along the length direction of the upper anti-pulling pile, the top ends of the grouting pipe and the slurry outlet pipe are flush with the top end of the upper anti-pulling pile, one plug-in pipe is arranged in communication with the bottom end of the grouting pipe and the slurry outlet pipe, the plug-in pipes are arranged in parallel with respect to the length direction of the upper anti-pulling pile, one end of the plug-in pipe extends to the bottom end of the upper anti-pulling pile, the first communication pipe is arranged in communication between the bottom ends of two plug-in pipes, the plug-in pipes are arranged in correspondence with the connecting steel bar in the vertical direction, the inner diameter of the plug-in pipe is greater than the diameter of the connecting steel bar, and the bottom end of the plug-in pipe is provided with a plug-in hole for inserting the connecting steel bar.
[0008] By adopting the above technical scheme, in the process of piling and splicing the anti-pulling pile, part of the lower anti-pulling pile is punched into the foundation, and a certain length is reserved on the ground. The upper anti-pulling pile is placed above the lower anti-pulling pile, and the top end of the connecting steel bar is inserted into the corresponding plug-in pipe through the plug-in hole. Mud is used to preliminarily connect the contact positions of the upper anti-pulling pile and the lower anti-pulling pile. Then, the grouting pipe is used to inject concrete slurry, the slurry flows through the two plug-in pipes and finally overflows through the slurry outlet pipe, so that the slurry fully fills the entire pipeline, the concrete in the plug-in pipe is solidified, and stable connection between the top end of the connecting steel bar and the upper anti-pulling pile is realized. Through the cooperation of the upper anti-pulling pile, the lower anti-pulling pile and the grouting assembly, stable and rapid connection of the upper anti-pulling pile and the lower anti-pulling pile is realized, and the effects of improving the splicing strength and construction efficiency of the anti-pulling precast pile are achieved.
[0009] Optionally, the grouting assembly is arranged on the upper anti-pulling pile in several groups, the first communication pipes in the several groups of grouting assemblies do not interfere with each other on the bottom surface of the upper anti-pulling pile, and the connecting steel bars are arranged in the lower anti-pulling pile in several groups, and the plug-in pipes and the connecting steel bars are arranged in one-to-one correspondence in the vertical direction.
[0010] By adopting the above technical scheme, the arrangement of the several groups of grouting assemblies increases the connecting positions between the upper anti-pulling pile and the lower anti-pulling pile, which helps to further strengthen the connection strength between the upper anti-pulling pile and the lower anti-pulling pile.
[0011] Optionally, the top end of the lower uplift pile is provided with a square ring, the outer ring wall of the square ring is flush with the peripheral wall of the lower uplift pile, the outer ring wall of the bottom end of the upper uplift pile is provided with a square ring slot in the circumferential direction, the shape of the square ring slot corresponds to the shape of the square ring, and the square ring is inserted outside the square ring slot when the upper uplift pile is placed above the lower uplift pile.
[0012] By adopting the above technical scheme, the square ring is inserted outside the square ring slot in the connection, the angle between the upper and lower uplift piles is limited, the placement angle between the two is not deviated, the outer part of the connection between the two can still be flush after the connection of the upper and lower uplift piles is completed, and the resistance of the connection part during piling is reduced.
[0013] Optionally, the top end and the inner ring wall of the square ring are provided with a plurality of support strips, one end of the support strip extends to the peripheral wall edge of the square ring, and the support strip abuts against the side wall of the square ring slot.
[0014] By adopting the above technical scheme, the support strip is provided between the square ring and the square ring slot, the gap between the two is fixed, the cement is injected into the gap, and the preliminary connection between the upper and lower precast piles is realized.
[0015] Optionally, the lower uplift pile is provided with a connecting assembly, the connecting assembly comprises a positioning block and a connecting block, the positioning block is connected to the top end of the lower uplift pile, the bottom end of the upper uplift pile is provided with a positioning slot corresponding in shape and position to the positioning block, a sliding slot is formed in the vertical side wall of the positioning slot, one end of the connecting block is slidingly arranged in the sliding slot, an elastic member is arranged in the sliding slot, the elastic member is connected with the inner wall of the sliding slot and the connecting block, and in a natural state, one end of the connecting block extends out of the sliding slot under the action of the elastic member, and a connecting slot corresponding to the connecting block is formed in the vertical inner wall of the positioning slot.
[0016] By adopting the above technical scheme, the connecting block is pressed into the sliding slot before the upper and lower uplift piles are connected, the upper uplift pile is placed above the lower uplift pile, and the positioning block is inserted into the positioning slot. When the end of the connecting block corresponds to the position of the connecting slot, one end of the connecting block is elastically inserted into the connecting slot under the action of the elastic member, the stable connection of the upper and lower uplift piles is realized, and the connection strength between the two is improved.
[0017] Optionally, a sealing ring is arranged on the inner ring wall of the insertion hole, and the sealing ring is attached to the connecting steel bar.
[0018] By adopting the technical scheme, the sealing ring blocks the gap between the insertion hole and the connecting steel bar, reduces leakage of the concrete slurry from the gap, and thus causes the concrete slurry to be unable to be smoothly discharged through the slurry outlet pipe.
[0019] Optionally, the top end of the upper anti-pulling pile is provided with a pouring cylinder, the bottom end of the pouring cylinder is provided in an inverted frustum shape, and the bottom surface of the pouring cylinder is communicatively provided with a plurality of slurry conveying pipes, the plurality of slurry conveying pipes correspond to and are connected to the top ends of the plurality of grouting pipes one by one.
[0020] By adopting the technical scheme, the pouring cylinder and the plurality of slurry conveying pipes are used to simultaneously perform grouting on the plurality of grouting pipes, which helps to improve the connection efficiency between the upper anti-pulling pile and the lower anti-pulling pile.
[0021] Optionally, an inverted corner is arranged on the inner wall of the top end of the insertion square ring along the circumference.
[0022] By adopting the technical scheme, the inverted corner facilitates insertion of the upper anti-pulling pile into the insertion square ring, and reduces the possibility of damage to the inner wall of the insertion square ring during the insertion process.
[0023] In summary, the present application has at least one of the following beneficial technical effects:
[0024] 1. By cooperation of the upper anti-pulling pile, the lower anti-pulling pile, and the grouting assembly, stable and rapid connection of the upper anti-pulling pile and the lower anti-pulling pile is achieved, which improves the pile connection strength and construction efficiency of the anti-pulling precast pile.
[0025] 2. The connection assembly facilitates stable connection of the upper anti-pulling pile and the lower anti-pulling pile, and improves the connection strength therebetween.
[0026] 3. The inverted corner facilitates insertion of the upper anti-pulling pile into the insertion square ring, and reduces the possibility of damage to the inner wall of the insertion square ring during the insertion process. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a structural schematic view of a connection stable special-shaped anti-pulling square pile according to an embodiment of the present application.
[0028] Figure 2 is a partial sectional view of a grouting assembly according to an embodiment of the present application.
[0029] Figure 3 is Figure 2 is an enlarged view of part A in FIG. 6.
[0030] Figure 4 is a structural schematic view of a support strip according to an embodiment of the present application.
[0031] Figure 5is Figure 2 Enlarged view of middle B part.
[0032] BRIEF DESCRIPTION OF DRAWINGS 1, upper anti-pulling pile; 101, plug-in ring groove; 102, alignment groove; 103, connecting groove; 2, lower anti-pulling pile; 21, connecting steel bar; 3, grouting assembly; 31, grouting pipe; 32, grout outlet pipe; 33, first communication pipe; 34, plug-in pipe; 341, plug-in hole; 35, second communication pipe; 4, connecting assembly; 41, alignment block; 411, sliding groove; 42, connecting block; 421, contact inclined surface; 43, connecting spring; 5, sealing ring; 6, plug-in square ring; 61, placement chamfer; 7, support strip; 8, cement; 9, pouring cylinder; 10, grout conveying pipe; 11, support frame. DETAILED DESCRIPTION
[0033] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The present application is further described in detail. The embodiment of the present application provides a stable connecting special-shaped anti-pulling square pile, which has the effect of improving the pile connecting strength and construction efficiency of the anti-pulling precast pile.
[0034] Referring to Figure 1 and Figure 2 A stable connecting special-shaped anti-pulling square pile includes an upper anti-pulling pile 1, a lower anti-pulling pile 2, a grouting assembly 3, and a connecting assembly 4. The upper anti-pulling pile 1 and the lower anti-pulling pile 2 are square piles, and the upper anti-pulling pile 1 and the lower anti-pulling pile 2 are both vertically arranged, with the upper anti-pulling pile 1 arranged at the top end of the lower anti-pulling pile 2. The lower anti-pulling pile 2 is provided with a plurality of connecting steel bars 21 inside along the length direction thereof, with the top end of the connecting steel bar 21 extending out of the top end of the lower anti-pulling pile 2.
[0035] Referring to Figures 1 to 3The grouting assembly 3 is arranged on the upper anti-pulling pile 1, and a plurality of groups of grouting assemblies 3 are arranged on the upper anti-pulling pile 1. The grouting assembly 3 comprises a grouting pipe 31, a slurry outlet pipe 32, a first communication pipe 33, a plug-in pipe 34 and a second communication pipe 35. The grouting pipe 31 and the slurry outlet pipe 32 are arranged inside the upper anti-pulling pile 1 along the length direction of the upper anti-pulling pile 1, and the top ends of the grouting pipe 31 and the slurry outlet pipe 32 are flush with the top end of the upper anti-pulling pile 1. The second communication pipe 35 is horizontally communicated with the bottom ends of the grouting pipe 31 and the slurry outlet pipe 32, and a plurality of second communication pipes 35 are located in the same horizontal plane. The plug-in pipe 34 is communicated with each second communication pipe 35, and the plug-in pipe 34 is arranged along the length direction of the upper anti-pulling pile 1. The plug-in pipes 34 in the plurality of grouting assemblies 3 are arranged in one-to-one correspondence with the connecting steels 21 in the vertical direction. The bottom end of the plug-in pipe 34 extends to the bottom end of the upper anti-pulling pile 1, and the first communication pipe 33 is connected between the bottom ends of the corresponding plug-in pipes 34. The first communication pipe 33 is arranged at the bottom end of the upper anti-pulling pile 1, and the first communication pipes 33 in the plurality of grouting assemblies 3 do not interfere with each other on the bottom surface of the upper anti-pulling pile 1. The bottom end of the plug-in pipe 34 is provided with a plug-in hole 341, and the inner wall of the plug-in hole 341 is connected with a sealing ring 5.
[0036] With reference to Figure 2 and Figure 4 The top end of the lower anti-pulling pile 2 is fixedly connected with a plug-in square ring 6, the outer peripheral wall of the plug-in square ring 6 is flush with the outer wall of the lower anti-pulling pile 2, and the inner wall of the top end of the plug-in square ring 6 is provided with a placement chamfer 61 along the circumference. A plurality of support bars 7 are connected in parallel on the top end and the inner peripheral wall of the plug-in square ring 6, and one end of the support bar 7 extends to the edge of the outer peripheral wall of the plug-in square ring 6. The edge of the bottom end of the upper anti-pulling pile 1 is provided with a plug-in ring groove 101 along the circumference, and the shape of the plug-in ring groove 101 corresponds to the plug-in square ring 6. When the plug-in square ring 6 is inserted outside the plug-in ring groove 101, the plug-in square ring 6 and the side wall of the plug-in ring groove 101 are filled with cement 8 for connection.
[0037] With reference to Figure 2 and Figure 5The connecting assembly 4 is arranged on the lower anti-pulling pile 2, and the connecting assembly 4 comprises a positioning block 41, a connecting block 42 and a connecting spring 43. The positioning block 41 is fixedly connected to the top end of the lower anti-pulling pile 2, and the positioning block 41 is a square column-shaped block. A sliding groove 411 is formed in each vertical side wall of the positioning block 41, and the connecting block 42 is slidingly arranged in each sliding groove 411. The connecting spring 43 is arranged in the sliding groove 411, one end of the connecting spring 43 is connected to the inner bottom wall of the sliding groove 411, and the other end of the connecting spring 43 is connected to the connecting block 42. In a natural state, one end of the connecting block 42 extends out of the sliding groove 411 under the action of the connecting spring 43. The top end of the connecting block 42 is provided with a contact inclined surface 421, and the longitudinal cross-sectional area of the connecting block 42 gradually decreases in a direction away from the side wall of the positioning block 41. The bottom end of the upper anti-pulling pile 1 is provided with a positioning groove 102, and the shape and position of the positioning groove 102 correspond to the positioning block 41. A connecting groove 103 corresponding to the connecting block 42 is formed in the vertical inner wall of the positioning groove 102.
[0038] With reference to Figure 1 and Figure 2 The top end of the upper anti-pulling pile 1 is provided with a pouring cylinder 9, and the pouring cylinder 9 is arranged on the top end of the upper anti-pulling pile 1 through a support frame 11. The bottom end of the pouring cylinder 9 is arranged in an inverted truncated cone shape, and the bottom end of the pouring cylinder 9 is connected and provided with a plurality of slurry conveying pipes 10, and the plurality of slurry conveying pipes 10 are threadedly connected with the plurality of grouting pipes 31 one by one.
[0039] With reference to Figures 2 to 4 During construction of the anti-pulling pile, the bottom end of the lower anti-pulling pile 2 is first vertically driven into the foundation, and the upper anti-pulling pile 1 is left with a certain length on the ground. The upper anti-pulling pile 1 is vertically placed on the top end of the lower anti-pulling pile 2, the bottom end of the upper anti-pulling pile 1 is inserted into the insertion square ring 6, and the support strip 7 on the insertion square ring 6 abuts against the inner wall of the insertion ring groove 101. The top end of the connecting steel bar 21 is arranged in the corresponding insertion pipe 34 through the insertion hole 341, and the sealing ring 5 seals the gap between the connecting steel bar 21 and the insertion hole 341, thereby reducing the possibility of leakage of the concrete slurry from the gap.
[0040] With reference to Figure 5 When the upper anti-pulling pile 1 is placed downward, the edge of the positioning groove 102 of the upper anti-pulling pile 1 abuts against the contact inclined surface 421 of the top surface of the connecting block 42, the connecting block 42 is gradually pushed into the sliding groove 411 along with the downward movement of the upper anti-pulling pile 1, and the connecting spring 43 is compressed to accumulate elastic potential energy. When the connecting groove 103 is in position corresponding to the connecting block 42, one end of the connecting block 42 is elastically inserted into the connecting groove 103 under the action of the connecting spring 43, thereby realizing stable and rapid connection between the upper anti-pulling pile 1 and the lower anti-pulling pile 2, and helping to improve the connection stability between the two.
[0041] With reference to Figure 2 and Figure 4The support strip 7 is supported between the plug-in square ring 6 and the inner wall of the plug-in ring groove 101, so that there is a gap between the upper anti-pulling pile 1 and the lower anti-pulling pile 2, facilitating the operator to inject the cement 8 into the gap, and realizing the preliminary connection between the upper anti-pulling pile 1 and the lower anti-pulling pile 2. The arrangement of the plug-in square ring 6 and the plug-in ring groove 101 realizes the angle limitation between the upper anti-pulling pile 1 and the lower anti-pulling pile 2, so that the two can be accurately positioned. Meanwhile, it also avoids the protrusion at the connection between the upper anti-pulling pile 1 and the lower anti-pulling pile 2, so that the pile can be more smoothly driven. The arrangement of the chamfer 61 facilitates the insertion of the upper anti-pulling pile 1, and reduces the possibility of damage to the inner ring wall of the plug-in square ring 6 and the bottom end of the upper anti-pulling pile 1 during the insertion process.
[0042] Referring to Figures 1 to 3 After the upper anti-pulling pile 1 is placed, the concrete slurry is poured into the pouring cylinder 9, and the concrete slurry simultaneously fills the plurality of grouting pipes 31 through the plurality of slurry pipes 10. The concrete slurry sequentially passes through the grouting pipe 31, one of the second communication pipes 35, one of the plug-in pipes 34, the first communication pipe 33, the other plug-in pipe 34, and the other second communication pipe 35. When the concrete slurry overflows through the slurry outlet pipe 32, it proves that the entire pipeline is filled with concrete slurry. As the concrete slurry solidifies, the concrete in the plug-in pipe 34 is stably connected with the connecting steel bar 21, realizing the stable connection between the upper anti-pulling pile 1 and the lower anti-pulling pile 2. The arrangement of the plurality of grouting assemblies 3 increases the connection points between the upper anti-pulling pile 1 and the lower anti-pulling pile 2, further increasing the connection strength therebetween.
[0043] The implementation principle of the present application is that: when the anti-pulling pile is constructed, the bottom end of the lower anti-pulling pile 2 is vertically driven into the foundation, and the upper anti-pulling pile 1 is left with a certain length on the ground. The upper anti-pulling pile 1 is vertically placed on the top end of the lower anti-pulling pile 2, and the bottom end of the upper anti-pulling pile 1 is inserted into the plug-in square ring 6. The top end of the connecting steel bar 21 is arranged in the corresponding plug-in pipe 34 through the plug-in hole 341. When the upper anti-pulling pile 1 is placed downward, the connecting block 42 is gradually pushed into the sliding groove 411 as the lower part of the upper anti-pulling pile 1, and when the connecting groove 103 corresponds to the position of the connecting block 42, one end of the connecting block 42 is popped into the connecting groove 103 under the action of the connecting spring 43, realizing the stable and rapid connection between the upper anti-pulling pile 1 and the lower anti-pulling pile 2.
[0044] After the upper anti-pulling pile 1 is placed, the plurality of grouting pipes 31 are filled. As the concrete slurry solidifies, the concrete in the plug-in pipe 34 is stably connected with the connecting steel bar 21, realizing the stable connection between the upper anti-pulling pile 1 and the lower anti-pulling pile 2.
[0045] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.
Claims
1. A connection stable irregular anti-pulling square pile, characterized in that: The utility model provides an upper anti -pulling pile (1), lower anti -pulling pile (2) and grouting subassembly (3), upper anti -pulling pile (1) is collinear and vertically arranged in the upper of lower anti -pulling pile (2), the inside of lower anti -pulling pile (2) is provided with connecting reinforcement (21) along its length direction, the top end of connecting reinforcement (21) is protruding the top end of lower anti -pulling pile (2), grouting subassembly (3) includes grouting pipe (31), out of the pipe (32), plug pipe (34) and first communication pipe (33), grouting pipe (31) and out of the pipe (32) are arranged in upper anti -pulling pile (1) along the length direction of upper anti -pulling pile (1), the top end of grouting pipe (31) and out of the pipe (32) is flush with the top end of upper anti -pulling pile (1), plug pipe (34) is communicated and is provided with a root in the bottom of grouting pipe (31) and out of the pipe (32), plug pipe (34) is parallelly arranged about the length direction of upper anti -pulling pile (1), one end of plug pipe (34) extends to the bottom of upper anti -pulling pile (1), first communication pipe (33) is communicated and is provided between the bottom of corresponding two plug pipe (34), plug pipe (34) is vertically arranged with connecting reinforcement (21), the inner diameter of plug pipe (34) is greater than the diameter of connecting reinforcement (21), and the bottom of plug pipe (34) is provided with a plug hole (341) for inserting connecting reinforcement (21).
2. The profiled anti-pulling square pile with stable connection according to claim 1, characterized in that: The grouting subassembly (3) is provided with several groups on the upper anti -pulling pile (1), several first communication pipes (33) in several grouting subassemblies (3) do not interfere with each other on the bottom surface of the upper anti -pulling pile (1), and several connecting reinforcements (21) are arranged in the lower anti -pulling pile (2). Several plug pipes (34) and several connecting reinforcements (21) are vertically arranged one by one.
3. The profiled anti-pulling square pile with stable connection according to claim 1, characterized in that: The top end of the lower anti -pulling pile (2) is provided with a plug-in square ring (6), the outer ring wall of the plug-in square ring (6) is flush with the peripheral wall of the lower anti -pulling pile (2), the outer ring wall of the bottom of the upper anti -pulling pile (1) is provided with a plug-in ring groove (101) along the circumference, the shape of the plug-in ring groove (101) corresponds to the shape and position of the plug-in square ring (6), and when the upper anti -pulling pile (1) is placed above the lower anti -pulling pile (2), the plug-in square ring (6) is inserted outside the plug-in ring groove (101).
4. The profiled anti-pulling square pile with stable connection according to claim 3, characterized in that: The top end and inner ring wall of the plug-in square ring (6) are provided with a plurality of support bars (7), one end of the support bar (7) extends to the peripheral wall edge of the plug-in square ring (6), and the support bar (7) abuts against the side wall of the plug-in ring groove (101).
5. The profiled anti-pulling square pile with stable connection according to claim 4, characterized in that: The lower anti-pulling pile (2) is provided with a connecting assembly (4), the connecting assembly (4) comprises a locating block (41) and a connecting block (42), the locating block (41) is connected to the top end of the lower anti-pulling pile (2), the bottom end of the upper anti-pulling pile (1) is provided with a locating groove (102) corresponding to the shape and position of the locating block (41), a sliding groove (411) is formed in the vertical side wall of the locating groove (102), one end of the connecting block (42) is slidingly arranged in the sliding groove (411), an elastic member is arranged in the sliding groove (411), the elastic member is connected with the inner wall of the sliding groove (411) and the connecting block (42), and one end of the connecting block (42) is extended out of the sliding groove (411) under the action of the elastic member in the natural state, and a connecting groove (103) corresponding to the connecting block (42) is formed in the vertical inner wall of the locating groove (102).
6. The profiled anti-pulling square pile with stable connection according to claim 1, characterized in that: A sealing ring (5) is arranged on the inner ring wall of the plug hole (341), and the sealing ring (5) is attached to the connecting steel bar (21).
7. The profiled anti-pulling square pile with stable connection according to claim 2, characterized in that: The top end of the upper anti-pulling pile (1) is provided with a pouring cylinder (9), the bottom end of the pouring cylinder (9) is provided in an inverted conical frustum shape, the bottom surface of the pouring cylinder (9) is communicated with a plurality of slurry conveying pipes (10), and the plurality of slurry conveying pipes (10) are one-to-one corresponding and connected with the top ends of the plurality of grouting pipes (31).
8. The profiled anti-pulling square pile with stable connection according to claim 3, characterized in that: The inner wall of the top end of the plug-in square ring (6) is provided with a placing chamfer (61) along the circumference.