A post-inserted type slow-bonding uplift pile steel strand system and construction method

Abstract

The application discloses a post-insertion type slow-bonding anti-pulling pile steel strand system and a construction method, which comprises a vibrating sleeve, which is cylindrically arranged and symmetrically provided with a pair of operation holes at the upper end; a centering support, which is equidistantly arranged on the outer wall of the vibrating sleeve and used for abutting against the inner wall of a pile hole; a main reinforcement, which comprises a taper head, a steel strand bundle and a limiting plate, wherein the taper head is arranged at the lower end of the vibrating sleeve, the steel strand bundle is arranged on the taper head, and the limiting plate is arranged on the outer wall of the steel strand bundle in a sleeving manner at intervals; and a binding steel wire, which is fixed at the lower end of the steel strand bundle and fixed at the outer wall of the upper end of the vibrating sleeve after penetrating through the operation hole. The vibrating sleeve temporarily contains and restricts the steel strand bundle, so that the flexible steel strand bundle can be integrally lowered along the rigid vibrating sleeve, the risk of bending, winding or deviation of the steel strand bundle in the post-insertion process is reduced, and meanwhile, the equidistantly arranged centering support abuts against the inner wall of the pile hole, so that the vibrating sleeve and the steel strand bundle can be kept centered during the lowering process.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a post-insertion type slow-bonding anti-uplift pile steel strand system and construction method. Background Technology

[0002] With the expansion of underground space development, the requirements for anti-buoyancy of underground structures are constantly increasing. As a commonly used anti-buoyancy component, anti-uplift piles have been widely used in basements, underground complexes, municipal engineering, and foundations of tall buildings.

[0003] Slow-bonded prestressed pull-out piles can improve the stress state of the pile body, reduce the development of concrete cracks, and improve pull-out bearing capacity and durability by using slow-bonded steel strands. In the construction of post-insertion slow-bonded steel strand pull-out piles, the slow-bonded steel strands are usually inserted into the pile body concrete after the pile hole is formed and concrete is poured.

[0004] The existing technical problem is that during the post-insertion construction process, the loosely bonded steel strands are highly flexible and long. When inserted, they are easily affected by factors such as concrete resistance, lowering posture, and construction disturbances, making it difficult to continuously ensure the centering accuracy of the steel strands throughout the process. This leads to local deviation of the steel strand bundle, affecting the bearing capacity and long-term durability of the pull-out pile, and needs to be improved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a post-insertion type slow-bonding anti-extraction pile steel strand system. The technical problem to be solved is that the flexible steel strand bundle is prone to displacement and difficult to maintain centering during the lowering process of traditional post-insertion type slow-bonding steel strand in the pile hole.

[0006] The above-mentioned technical objective of this invention is achieved through the following technical solution: a post-insertion type slow-bonding anti-uplift pile steel strand system, comprising: The vibratory sleeve is cylindrical and is used to insert into the pile hole. A pair of operating holes are symmetrically arranged at the upper end of the vibratory sleeve. The centering support is equidistantly arranged on the outer wall of the vibratory sleeve and is used to abut against the inner wall of the pile hole; The main reinforcement includes a cone head, a steel strand bundle, and a limiting plate. The cone head is disposed at the lower end of the vibrating sleeve, the steel strand bundle is disposed on the cone head and extends to the upper end of the vibrating sleeve, and the limiting plate is spaced and sleeved on the outer wall of the steel strand bundle. The lower end of the binding wire is fixed to the steel strand bundle, and the upper end is fixed to the outer wall of the upper end of the vibrating sleeve after passing through the operating hole.

[0007] In a preferred embodiment, the present invention can be further configured such that: the centering support includes a horizontal bar and a pair of diagonal bars, the horizontal bar is horizontally and vertically disposed on the outer wall of the vibrating sleeve, and the pair of diagonal bars are arranged in a V-shape, with the inner end disposed on the outer wall of the vibrating sleeve and the outer end disposed on the outer end of the horizontal bar.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the crossbar includes a sliding tube and a sliding rod, the sliding tube is fixed to the outer wall of the vibrating sleeve, the sliding rod is horizontally slidably connected to the sliding tube, a locking pin is transversely provided on the sliding tube, and a row of locking holes for the locking pin to pass through is provided on the sliding rod. The outer end of the inclined rod is rotatably connected to the sliding rod, and the inner end is rotatably connected to a slider, the slider being vertically slidably connected to the outer wall of the vibrating sleeve.

[0009] In a preferred embodiment, the present invention may be further configured such that: a pile top centering seat is provided at the upper end of the steel strand bundle, and the pile top centering seat abuts against the inner wall of the pile hole.

[0010] In a preferred embodiment, the present invention may be further configured such that: the pile top centering seat includes a positioning ring, a positioning plate, and a diagonal brace; the positioning ring is used to abut against the inner wall of the pile hole; the positioning plate is disposed below the positioning ring and for the steel strand bundle to pass through; and the diagonal brace is disposed between the positioning ring and the positioning plate.

[0011] In a preferred embodiment, the present invention may be further configured such that the positioning ring is provided with an anti-disengagement hook that hooks onto the outside of the pile hole.

[0012] In a preferred embodiment, the invention may further include a cutter disposed at the upper end of the vibratory sleeve and used to cut the binding wire.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the cutter includes a cantilever, a fixed blade, a sliding blade, a take-up reel, and a pull rope. The cantilever is horizontally disposed on the upper outer walls of both sides of the vibrating sleeve. The fixed blade is annularly disposed on the outer wall of the vibrating sleeve and located above the operating hole. The sliding blade is slidably connected to the outer wall of the vibrating sleeve and located below the fixed blade. The take-up reel is rotatably disposed on the cantilever. The pull rope is wound around the take-up reel and connected to the sliding blade.

[0014] In a preferred embodiment, the present invention can be further configured such that: a wireless pressure sensor is provided at the lower end of the cone, and a controller connected to the wireless pressure sensor is provided on the cantilever; the controller is connected to the drive source of the winding reel and is used to control the rotation of the winding reel.

[0015] In a preferred embodiment, the present invention can be further configured such that the vibratory sleeve comprises multiple pipe sections, and adjacent pipe sections are connected and fixed by flanges.

[0016] In view of the shortcomings of the existing technology, another objective of the present invention is to provide a construction method for a post-insertion type slow-bonding anti-extraction pile steel strand system. The technical problem to be solved is that the flexible steel strand bundle is prone to displacement, difficult to maintain centering, and inconvenient to release after vibration during the traditional post-insertion type slow-bonding steel strand lowering process in the pile hole.

[0017] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a construction method for a post-insertion type slow-bonding anti-uplift pile steel strand system, comprising the following steps: S1. Pile Hole Pretreatment: Complete the pile hole drilling construction, clean the pile hole wall and bottom residue and debris, and check the pile hole diameter, verticality and depth to ensure that the pile hole construction accuracy meets the design requirements. S2. System pre-assembly: The assembly of the vibratory sleeve is completed in advance. The steel strand bundle with spaced limiting plates is extended into the vibratory sleeve and the cone head covers and touches the lower end of the vibratory sleeve. Then the lower end of the binding wire is fixed to the steel strand bundle, and the upper end is tied to the outer wall of the upper end of the vibratory sleeve after passing through the symmetrically set operation holes at the upper end of the vibratory sleeve. At the same time, the extension length of the centering support is adjusted according to the pile hole diameter to complete the overall shaping of the centering support. S3. Overall hoisting and positioning: Before the pile concrete has solidified, the upper end of the vibratory sleeve is fixed to the bottom of the vibratory hammer through the flange. The vibratory hammer is used to hoist the overall steel strand system into the pile hole. During the hoisting process, the centering supports that are equidistantly arranged on the outer wall of the vibratory sleeve contact the inner wall of the pile hole to achieve the centering of the overall steel strand system. S4. Real-time pressure monitoring: The wireless pressure sensor installed at the lower end of the cone head collects the internal pressure data of the pile hole in real time and transmits the data to the controller. The controller monitors the positioning pressure and the bottom of the hole in real time to determine whether the system has been lowered into place. S5. Automatic cutting of binding steel wire: After the system is accurately positioned and the pressure data meets the standard, the pull rope is driven by the control of the winding reel to pull the sliding blade to slide upward along the outer wall of the vibrating sleeve, and the binding steel wire is cut in conjunction with the fixed blade to release the fixed constraint between the steel strand bundle and the vibrating sleeve. S6. Vibration and molding: The slow-bonding grout in the pile hole is vibrated and compacted through the vibration sleeve. After vibration is completed, the vibration sleeve is pulled out, leaving the centrally arranged steel strand bundle. This completes the installation of the steel strand system for the plug-in slow-bonding anti-tension pile. S7, Steel strand bundle fixing: Before the initial setting of the pile body concrete, the upper end of the steel strand bundle is positioned at the pile top centering position by the positioning ring, positioning plate and diagonal bracing structure of the pile top centering seat, to ensure the coaxiality of the steel strand bundle with the pile hole, and at the same time ensure the centering layout.

[0018] In summary, the present invention has the following beneficial effects: 1. The vibratory sleeve temporarily accommodates and constrains the steel strand bundle, allowing the flexible steel strand bundle to be lowered as a whole with the rigid vibratory sleeve, reducing the risk of bending, tangling or misalignment of the steel strand bundle during the subsequent insertion process. At the same time, the equidistantly arranged centering supports abut against the inner wall of the pile hole, keeping the vibratory sleeve and steel strand bundle centered during the lowering process. 2. By setting up telescopic centering supports, it can adapt to pile holes of different diameters, improving the practicality and adaptability of the entire system; 3. Temporary fixation of the steel strand bundle and the vibratory sleeve is achieved by binding steel wire, and the binding steel wire is cut after positioning with a cutter, so that the vibratory sleeve can be pulled out after vibration is completed while the steel strand bundle remains in the pile hole. 4. By positioning the upper end of the steel strand bundle through the centering seat at the top of the pile, a full-process positioning system is formed, which improves the construction quality and long-term stress reliability of the post-insertion type slow-bonding anti-tension pile. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is a schematic diagram of the main reinforcement bars in Example 1; Figure 3 This is a schematic diagram of the centering bracket in Example 1; Figure 4 This is a schematic diagram of the pile top centering seat in Example 1; Figure 5 This is a schematic diagram of the structure of Example 2.

[0020] Reference numerals: 1. Vibratory sleeve; 11. Operating hole; 12. Pipe body; 2. Centering support; 21. Horizontal bar; 22. Diagonal bar; 23. Sliding tube; 24. Sliding rod; 25. Locking pin; 26. Locking hole; 27. Sliding block; 3. Main reinforcement; 31. Conical head; 32. Steel strand bundle; 33. Limiting plate; 4. Binding wire; 5. Pile top centering seat; 51. Positioning ring; 52. Positioning plate; 53. Diagonal brace; 54. Anti-disengagement hook; 6. Cutter; 61. Cantilever; 62. Fixed blade; 63. Sliding blade; 64. Reel; 65. Pull rope; 66. Wireless pressure sensor; 67. Controller. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings. Example 1

[0022] like Figure 1 , Figure 2 , Figure 3As shown, a post-insertion type slow-bonding anti-extraction pile steel strand system includes a vibratory sleeve 1, a centering support 2, a main reinforcement 3, and binding steel wires 4.

[0023] like Figure 1 As shown, the vibratory sleeve 1 is cylindrical and is used to insert into the pile hole when the pile body concrete or slow-setting bonding grout is in an uncured state after the pile hole is formed. The vibratory sleeve 1 includes multiple pipe sections 12, which are connected and fixed by flanges to achieve free assembly of the length of the vibratory sleeve 1 to meet different usage requirements.

[0024] like Figure 1 , Figure 3 As shown, the centering supports 2 are equidistantly arranged on the outer wall of the vibratory sleeve 1 and are used to abut against the inner wall of the pile hole. When multiple centering supports 2 are arranged at intervals along the axial direction of the vibratory sleeve 1, radial support points can be formed at different height positions of the vibratory sleeve 1, making it less likely for the vibratory sleeve 1 to tilt relative to the pile hole during the lowering process.

[0025] like Figure 1 , Figure 2 As shown, the main reinforcement 3 includes a cone head 31, a steel strand bundle 32, and a limiting plate 33. The cone head 31 is located at the lower end of the vibrating sleeve 1, and the steel strand bundle 32 is located on the cone head 31 and extends upward to the upper end of the vibrating sleeve 1.

[0026] The cone 31 is used to guide the vibratory sleeve 1 and the steel strand bundle 32 into the material inside the pile hole during the lowering process, reduce the insertion resistance at the end, and reduce the possibility of bending when the end of the steel strand bundle 32 directly pushes against the concrete or grout.

[0027] like Figure 1 , Figure 2 As shown, limiting plates 33 are spaced out and sleeved on the outer wall of the steel strand bundle 32, and the limiting plates 33 have through holes. After multiple limiting plates 33 are spaced out along the length of the steel strand bundle 32, they can keep the steel strands in the steel strand bundle 32 relatively stable in the radial direction, reduce the local convergence or twisting between the steel strands, and thus form a more uniform stress arrangement when they are subsequently retained in the pile hole.

[0028] like Figure 1 , Figure 3 As shown, a pair of operating holes 11 are symmetrically arranged at the upper end of the vibrating sleeve 1, and the operating holes 11 are arranged radially through the vibrating sleeve 1. The lower end of the binding steel wire 4 is fixed to the steel strand bundle 32, and the upper end passes through the operating hole 11 and is tied or locked to the outer wall of the upper end of the vibrating sleeve 1.

[0029] Therefore, the steel strand bundle 32 can be temporarily fixed inside the vibratory sleeve 1 before being inserted into the pile hole, and will not come apart prematurely during hoisting, transportation or lowering due to its own high flexibility.

[0030] like Figure 3 As shown, the centering support 2 includes a horizontal bar 21 and a pair of diagonal bars 22. The horizontal bar 21 is horizontally and vertically arranged on the outer wall of the vibrating sleeve 1. The pair of diagonal bars 22 are arranged in a V shape, with the inner end arranged on the outer wall of the vibrating sleeve 1 and the outer end arranged on the outer end of the horizontal bar 21.

[0031] The outer end of the horizontal bar 21 is used to approach or abut against the inner wall of the pile hole, while the diagonal bar 22 forms an oblique support between the horizontal bar 21 and the vibratory sleeve 1. Since the pair of diagonal bars 22 are arranged in a V-shape, when the horizontal bar 21 is subjected to the reaction force of the hole wall, the reaction force can be distributed and transmitted to the outer wall of the vibratory sleeve 1 through the diagonal bar 22, reducing the swaying caused by the single-point cantilever force on the horizontal bar 21.

[0032] like Figure 3 As shown, the crossbar 21 includes a sliding tube 23 and a sliding rod 24. The sliding tube 23 is fixed to the outer wall of the vibrating sleeve 1, and the sliding rod 24 is horizontally slidably connected to the sliding tube 23. A locking pin 25 is provided horizontally through the sliding tube 23, and a row of locking holes 26 for the locking pin 25 to pass through is provided on the sliding rod 24.

[0033] Therefore, before construction, the sliding rod 24 can be pulled out according to the designed diameter of the pile hole or the actual measured diameter on site, so that the outer end of the sliding rod 24 forms a suitable contact or guide gap with the inner wall of the pile hole. Then, the locking pin 25 is inserted into the corresponding locking hole 26 to fix the extension length of the sliding rod 24.

[0034] like Figure 3 As shown, the outer end of the inclined rod 22 is rotatably connected to the sliding rod 24, and the inner end of the inclined rod 22 is rotatably connected to the slider 27. The slider 27 is vertically slidably connected to the outer wall of the vibrating sleeve 1.

[0035] Therefore, when the sliding rod 24 extends outward relative to the sliding tube 23, the inclination angle of the inclined rod 22 changes accordingly. The inner end of the inclined rod 22 can drive the slider 27 to move vertically along the outer wall of the vibrating sleeve 1, thereby compensating for the positional difference of the inclined rod 22 caused by the change in the length of the horizontal rod 21.

[0036] like Figure 1 , Figure 4 As shown, a pile top centering seat 5 is provided at the upper end of the steel strand bundle 32, and the pile top centering seat 5 abuts against the inner wall of the pile hole. The pile top centering seat 5 is used to continue to restrict the position of the upper end of the steel strand bundle 32 after the vibrating sleeve 1 is pulled out, so that the steel strand bundle 32 will not deviate from the center of the pile hole due to free swing of the upper end, construction disturbance or concrete backflow.

[0037] like Figure 4As shown, the pile top centering seat 5 includes a positioning ring 51, a positioning plate 52, and a diagonal brace 53. The positioning ring 51 is used to abut against the inner wall of the pile hole, and the positioning ring 51 is provided with an anti-disengagement hook 54 to hook onto the outside of the pile hole to prevent the entire pile top centering seat 5 from falling off during use. The positioning plate 52 is located below the positioning ring 51 and allows the steel strand bundle 32 to pass through. The diagonal brace 53 is located between the positioning ring 51 and the positioning plate 52.

[0038] The working principle of the pile top centering seat 5 is as follows: the positioning ring 51 uses the inner wall of the pile hole as a positioning reference to determine the outer peripheral position of the pile top centering seat 5, and the positioning plate 52 uses the positioning ring 51 as a reference to determine the center position of the steel strand bundle 32. After the steel strand bundle 32 passes through the positioning plate 52, the position of the upper end of the steel strand bundle 32 is restricted to the central area of ​​the pile hole. With the cooperation of the lower cone head 31 and the travel limit plate 33, the steel strand bundle 32 can maintain a good centering state from the bottom of the pile to the top of the pile. Example 2

[0039] like Figure 5 As shown, a post-insertion type slow-bonding anti-extraction pile steel strand system also includes a cutter 6, which is set at the upper end of the vibratory sleeve 1 and is used to cut the binding steel wire 4.

[0040] like Figure 5 As shown, the cutter 6 includes a cantilever 61, a fixed blade 62, a sliding blade 63, a winding reel 64, and a pull rope 65.

[0041] The cantilever 61 is horizontally mounted on the upper outer walls of both sides of the vibrating sleeve 1. The fixed blade 62 is annularly mounted on the outer wall of the vibrating sleeve 1 and located above the operating hole 11. The sliding blade 63 is slidably connected to the outer wall of the vibrating sleeve 1 and located below the fixed blade 62. The winding reel 64 is rotatably mounted on the cantilever 61, and the pull rope 65 is wound around the winding reel 64 and connected to the sliding blade 63.

[0042] When the binding wire 4 passes through the operating hole 11 and is fixed to the upper outer wall of the vibratory sleeve 1, its exposed portion is located near the shearing path of the fixed blade 62 and the sliding blade 63. After the system is lowered to the predetermined depth, the winding reel 64 rotates the winding rope 65, which pulls the sliding blade 63 upward along the outer wall of the vibratory sleeve 1, causing the sliding blade 63 to approach the fixed blade 62 and shear the binding wire 4. After the binding wire 4 is cut, the temporary fixation between the steel strand bundle 32 and the vibratory sleeve 1 is released, and the steel strand bundle 32 can remain in its original position in the pile hole, while the vibratory sleeve 1 can continue to perform vibration and be pulled out after vibration.

[0043] As shown in Figure 2, Figure 5As shown, a wireless pressure sensor 66 is provided at the lower end of the cone head 31, and a controller 67 connected to the wireless pressure sensor 66 is provided on the cantilever 61. The controller 67 is connected to the drive source of the winding reel 64 and is used to control the rotation of the winding reel 64.

[0044] The wireless pressure sensor 66 can detect the pressure change after the lower end of the cone 31 comes into contact with the material inside the pile hole, and wirelessly transmit the pressure data to the controller 67. When the controller 67 determines that the pressure has reached the preset range or the pressure change trend meets the positioning conditions, it means that the cone 31 has reached the predetermined insertion position or formed a stable contact with the bottom area of ​​the hole. At this time, the controller 67 drives the winding reel 64 to automatically cut the binding wire 4.

[0045] The wireless pressure sensor 66 and controller 67 can reduce errors caused by relying solely on hoisting depth or manual experience. Especially when the pile hole is deep and the fluidity of concrete or grout varies greatly, the actual stress state at the lower end of the system may not be completely consistent with the theoretical lowering height. Pressure monitoring can more intuitively determine whether the cone 31 has been inserted in place, thereby improving the reliability of subsequent cutting, release, and vibration molding. Example 3

[0046] A construction method for a post-insertion type slow-bonding anti-uplift pile steel strand system includes the following steps: S1. Pile Hole Pretreatment: Complete the pile hole drilling construction, clean the pile hole wall and bottom residue and debris, and check the pile hole diameter, verticality and depth to ensure that the pile hole construction accuracy meets the design requirements.

[0047] S2. System pre-assembly: The assembly of the vibratory sleeve 1 is completed in advance. The steel strand bundle 32 with spaced limiting plates 33 is extended into the vibratory sleeve 1, and the cone head 31 covers and touches the lower end of the vibratory sleeve 1. Then, the lower end of the binding steel wire 4 is fixed to the steel strand bundle 32, and the upper end passes through the operation holes 11 symmetrically arranged at the upper end of the vibratory sleeve 1 and is tied and fixed to the upper outer wall of the vibratory sleeve 1. At the same time, the extension length of the centering support 2 is adjusted according to the pile hole diameter to complete the overall shaping of the centering support 2.

[0048] S3. Overall hoisting and positioning: Before the pile concrete has solidified, the upper end of the vibratory sleeve 1 is fixed to the bottom of the vibratory hammer through the flange. The vibratory hammer is used to hoist the overall steel strand system into the pile hole. During the hoisting process, the centering brackets 2, which are equidistantly arranged on the outer wall of the vibratory sleeve 1, abut against the inner wall of the pile hole to achieve the centering of the overall steel strand system.

[0049] S4. Real-time pressure monitoring: The wireless pressure sensor 66 installed at the lower end of the cone head 31 collects the internal pressure data of the pile hole in real time and transmits the data to the controller 67. The controller 67 monitors the positioning pressure and the bottom of the hole in real time to determine whether the system has been lowered into place.

[0050] S5. Automatic cutting of binding steel wire 4: After the system is accurately positioned and the pressure data meets the standard, the winding reel 64 drives the pull rope 65 to pull the sliding blade 63 to slide upward along the outer wall of the vibrating sleeve 1, and the fixed blade 62 cuts the binding steel wire 4, releasing the fixed constraint between the steel strand bundle 32 and the vibrating sleeve 1.

[0051] S6. Vibration and compaction: The slow-bonding grout in the pile hole is vibrated and compacted through the vibrating sleeve 1. After vibration is completed, the vibrating sleeve 1 is pulled out, and the steel strand bundle 32 is retained in the center. After completion, the installation of the insert-type slow-bonding anti-pull-out pile steel strand system is completed.

[0052] S7, Steel strand bundle 32 fixing: Before the initial setting of the pile body concrete, the upper end of the steel strand bundle 32 is positioned at the pile top centering position through the positioning ring 51, positioning plate 52 and diagonal brace 53 structure of the pile top centering seat 5, to ensure the coaxiality of the steel strand bundle 32 with the pile hole, and at the same time ensure the centering arrangement.

[0053] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A post-insertion type slow-bonding anti-extraction pile steel strand system, characterized in that: include: The vibratory sleeve (1) is cylindrical and is used to insert into the pile hole. A pair of operating holes (11) are symmetrically arranged at the upper end of the vibratory sleeve (1). The centering support (2) is equidistantly arranged on the outer wall of the vibrating sleeve (1) and is used to abut against the inner wall of the pile hole; The main reinforcement (3) includes a cone head (31), a steel strand bundle (32), and a limiting plate (33). The cone head (31) is located at the lower end of the vibrating sleeve (1). The steel strand bundle (32) is located on the cone head (31) and extends to the upper end of the vibrating sleeve (1). The limiting plate (33) is spaced and sleeved on the outer wall of the steel strand bundle (32). The binding wire (4) is fixed at the lower end to the steel strand bundle (32) and at the upper end through the operating hole (11) and then fixed to the upper outer wall of the vibrating sleeve (1).

2. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 1, characterized in that: The centering support (2) includes a horizontal bar (21) and a pair of diagonal bars (22). The horizontal bar (21) is horizontally and vertically arranged on the outer wall of the vibrating sleeve (1). The pair of diagonal bars (22) are arranged in a V shape, with the inner end arranged on the outer wall of the vibrating sleeve (1) and the outer end arranged on the outer end of the horizontal bar (21).

3. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 2, characterized in that: The crossbar (21) includes a sliding tube (23) and a sliding rod (24). The sliding tube (23) is fixed to the outer wall of the vibrating sleeve (1). The sliding rod (24) is horizontally slidably connected to the sliding tube (23). A locking pin (25) is horizontally arranged on the sliding tube (23). A row of locking holes (26) for the locking pin (25) to pass through is provided on the sliding rod (24). The outer end of the inclined rod (22) is rotatably connected to the sliding rod (24), and the inner end is rotatably connected to a slider (27). The slider (27) is vertically slidably connected to the outer wall of the vibrating sleeve (1).

4. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 1, characterized in that: The upper end of the steel strand bundle (32) is provided with a pile top centering seat (5), which abuts against the inner wall of the pile hole.

5. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 4, characterized in that: The pile top centering seat (5) includes a positioning ring (51), a positioning plate (52), and a diagonal brace (53). The positioning ring (51) is used to abut against the inner wall of the pile hole. The positioning plate (52) is located below the positioning ring (51) and is used for the steel strand bundle (32) to pass through. The diagonal brace (53) is located between the positioning ring (51) and the positioning plate (52).

6. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 5, characterized in that: The positioning ring (51) is provided with an anti-disengagement hook (54) that hooks onto the outside of the pile hole.

7. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 1, characterized in that: It also includes a cutter (6), which is located at the upper end of the vibrating sleeve (1) and is used to cut the binding wire (4).

8. The post-insertion type slow-bonding anti-uplift pile steel strand system according to claim 7, characterized in that: The cutter (6) includes a cantilever (61), a fixed blade (62), a sliding blade (63), a winding reel (64), and a pull rope (65). The cantilever (61) is horizontally arranged on the upper outer wall of both sides of the vibrating sleeve (1). The fixed blade (62) is arranged in a ring on the outer wall of the vibrating sleeve (1) and is located above the operating hole (11). The sliding blade (63) is slidably connected to the outer wall of the vibrating sleeve (1) and is located below the fixed blade (62). The winding reel (64) is rotatably arranged on the cantilever (61). The pull rope (65) is wound on the winding reel (64) and connected to the sliding blade (63).

9. A post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 8, characterized in that: A wireless pressure sensor (66) is provided at the lower end of the cone (31), and a controller (67) connected to the wireless pressure sensor (66) is provided on the cantilever (61). The controller (67) is connected to the drive source of the winding reel (64) and is used to control the rotation of the winding reel (64).

10. The post-insertion type slow-bonding anti-extraction pile steel strand system according to claim 1, characterized in that: The vibratory sleeve (1) includes multiple pipe sections (12), and adjacent pipe sections (12) are connected and fixed by flanges.

11. A construction method for a post-insertion type slow-bonding anti-uplift pile steel strand system, applied to the post-insertion type slow-bonding anti-uplift pile steel strand system as described in any one of claims 1-10, characterized in that: Includes the following steps: S1. Pile Hole Pretreatment: Complete the pile hole drilling construction, clean the pile hole wall and bottom residue and debris, and check the pile hole diameter, verticality and depth to ensure that the pile hole construction accuracy meets the design requirements. S2, System pre-assembly: The assembly of the vibratory sleeve (1) is completed in advance. The steel strand bundle (32) with spaced limit plates (33) is extended into the vibratory sleeve (1), and the cone (31) covers and touches the lower end of the vibratory sleeve (1). Then the lower end of the binding wire (4) is fixed to the steel strand bundle (32), and the upper end passes through the symmetrically arranged operation holes (11) at the upper end of the vibratory sleeve (1) and is tied and fixed to the upper outer wall of the vibratory sleeve (1). At the same time, the extension length of the centering support (2) is adjusted according to the pile hole diameter to complete the overall shaping of the centering support (2). S3. Overall hoisting and positioning: When the concrete of the pile body has not solidified, the upper end of the vibrating sleeve (1) is fixed to the bottom of the vibrating hammer through the flange. The vibrating hammer is used to hoist the overall steel strand system into the pile hole. During the hoisting process, the centering brackets (2) arranged at equal intervals on the outer wall of the vibrating sleeve (1) abut against the inner wall of the pile hole to achieve the centering of the overall steel strand system. S4. Real-time pressure monitoring: The wireless pressure sensor (66) installed at the lower end of the cone (31) collects the internal pressure data of the pile hole in real time and transmits the data to the controller (67). The controller (67) monitors the positioning pressure and the bottom of the hole in real time to determine whether the system is properly positioned. S5. Automatic cutting of binding steel wire (4): After the system is accurately positioned and the pressure data meets the standard, the pull rope (65) is driven by the control of the winding reel (64) to pull the sliding blade (63) to slide upward along the outer wall of the vibrating sleeve (1), and the binding steel wire (4) is cut off in conjunction with the fixed blade (62), thereby releasing the fixed constraint between the steel strand bundle (32) and the vibrating sleeve (1); S6. Vibration and molding: The slow-bonding grout in the pile hole is vibrated and compacted by the vibration sleeve (1). After vibration is completed, the vibration sleeve (1) is pulled out, and the steel strand bundle (32) is retained in the center. After the installation of the steel strand system of the plug-in slow-bonding anti-pull pile is completed. S7, Steel strand bundle (32) fixing: Before the initial setting of the pile body concrete, the upper end of the steel strand bundle (32) is positioned at the top of the pile by the positioning ring (51), positioning plate (52) and diagonal brace (53) structure of the pile top centering seat (5), to ensure the coaxiality of the steel strand bundle (32) with the pile hole, and at the same time ensure the centering arrangement.

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