Water-stopping steel sleeve static pressure concrete segmental square pile and construction method

Abstract

The present application relates to the field of building construction technology, specifically to a water-stop steel sleeve static pressure concrete segment square pile and construction method, comprising: a water-stop steel sleeve, a cushion layer and a concrete pile, the lower end of the water-stop steel sleeve is fixed on the upper end of the cushion layer through a connecting strip and expansion bolts, the lower end port of the water-stop steel sleeve is larger than the upper end port, the outer end of the water-stop steel sleeve is fixedly welded with a water-stop belt one, and the inner side of the upper end is provided with a water-stop belt two; the upper end of the cushion layer is symmetrically provided with two anchor rods on the left and right sides, and a hanger is installed through the anchor rods, the upper end of the two hangers is provided with a mounting plate, and the inner end of the mounting plate is provided with an electric hoist; the beneficial effects are that the construction machine is light and flexible, the operation is simple, the working surface is small, there is no vibration, noise and pollution, the pile body quality is reliable, and the construction speed is relatively fast. However, for the projects with high underground water level and high underground waterproof requirements, it is a crucial link to solve the leakage problem after foundation reinforcement.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a water-stop steel sleeve static pressure concrete segmental square pile and its construction method. Background Technology

[0002] With the rapid development of urban construction in China, buildings are subject to modifications to their superstructure or changes in their function, resulting in increased loads and insufficient bearing capacity of the existing pile foundations. Therefore, it is necessary to reinforce the pile foundations during the construction of the superstructure.

[0003] In existing technologies, for pile foundations that have been constructed but have insufficient bearing capacity, conventional methods such as pile foundation supplementation and deep grouting reinforcement of the foundation are used. These methods are costly, time-consuming, labor-intensive, and inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide a water-stop steel sleeve static pressure concrete segmental square pile and a construction method thereof, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a water-stop steel sleeve static pressure concrete segmental square pile, comprising: a water-stop steel sleeve, a cushion layer and a concrete pile, wherein the lower end of the water-stop steel sleeve is fixed to the upper end of the cushion layer by a connecting strip and an expansion bolt, wherein the lower port of the water-stop steel sleeve is larger than the upper port, a water-stop strip one is fixedly welded to the outer end of the water-stop steel sleeve, and a water-stop strip two is installed on the inner side of the upper end;

[0006] Two anchor rods are symmetrically fixed on the left and right sides of the upper end of the cushion layer, and hangers are installed through the anchor rods. A top plate is installed on the upper end of the two hangers, and an electric hoist is installed on the inner end of the top plate.

[0007] One of the hangers has a rotating plate fixedly installed on one side. The upper end of the rotating plate is rotatably connected to a rotating structure via a rotating shaft. A hydraulic cylinder is installed at one end of the rotating structure, and a push plate is fixedly installed at the output end of the hydraulic cylinder.

[0008] Preferably, both the first and second waterstops are welded from angle steel. The upper end of the second waterstop is fixedly welded with connecting plates on all four sides. The second waterstop is inserted upward from the lower end of the waterstop steel sleeve until it contacts the inner wall of the waterstop steel sleeve. At this time, the upper end of the connecting plate contacts the upper inner wall of the waterstop steel sleeve, and the connecting plate is welded to the inner wall of the waterstop steel sleeve 2.

[0009] Preferably, a waterproof layer is provided on the upper end of the cushion layer, and a concrete layer is poured on the upper end of the waterproof layer. A base plate is installed on the upper end of the concrete layer by bolts and anchors. The lower end of the hanger is welded to the upper end of the base plate, and several fixing holes are evenly opened on the side wall of the hanger.

[0010] Preferably, the top plate has U-shaped left and right ends, and the left and right ends of the top plate are respectively snapped onto the upper ends of two hangers and fixed to the upper ends of the hangers with bolts. A hanging rod is provided at the lower end of the top plate, and the electric hoist is hung on the hanging rod by a hook.

[0011] Preferably, the rotating structure includes a rotating rod, which is L-shaped. A rotating cylinder is fixedly installed at one end of the rotating rod, and a mounting plate is fixedly installed at the other end. The rotating cylinder is rotatably sleeved on the rotating shaft. A nut is threadedly connected to the upper end of the rotating shaft, and the lower end of the nut does not contact the upper end of the rotating cylinder.

[0012] Preferably, a hydraulic rod is fixedly installed on the upper end of the mounting plate one, and a mounting plate two is fixedly installed on the output end of the hydraulic rod one. Telescopic rods one are fixedly installed on both the left and right sides between the mounting plate one and the mounting plate two, and the telescopic rods one are located on the left and right sides of the hydraulic rod one.

[0013] Preferably, an installation plate three is fixedly installed on the upper end of the installation plate two, a hydraulic rod two is fixedly installed on one end of the installation plate three, an installation plate four is fixedly installed on the output end of the hydraulic rod two, and telescopic rod two is fixedly installed on both the left and right sides between the installation plate four and the installation plate three, with the telescopic rod two located on the left and right sides of the hydraulic rod two.

[0014] Preferably, a horizontal plate is fixedly installed on the side wall of the mounting plate four. The length of the horizontal plate is less than the distance between the two hangers. Both the left and right ends of the horizontal plate are provided with overlapping groove one. Both the left and right sides of the horizontal plate are provided with fixing plates. One end of the fixing plate is provided with overlapping groove two, and the other end of the fixing plate is provided with bolt holes. A limiting groove is fixedly installed at the lower end of the horizontal plate. A limiting block is also slidably connected in the limiting groove. The limiting block is fixed in the limiting groove by bolts. The lower end of the limiting block is located outside the limiting groove and is fixedly connected to the upper end of the hydraulic cylinder through the mounting plate five.

[0015] Preferably, the concrete piles are provided in a plurality of form, and each concrete pile is provided with connecting bars at the upper and lower ends. The outer ends of the connecting bars are provided with external threads. A connecting sleeve is provided between two adjacent concrete piles. The upper and lower ends of the connecting sleeve are provided with connecting discs. The connecting discs are provided with through holes. The connecting bars pass through the through holes and are threaded with nuts.

[0016] A construction method for a water-stop steel sleeve static pressure concrete segmental square pile includes the following steps:

[0017] S1. Fabrication, installation, and waterproofing layer construction of water-stop steel sleeves. Before foundation construction, reserve pile driving holes and perform waterproofing treatment. The pile driving holes are made of steel sleeves with a wall thickness of 5mm.

[0018] S2. After the foundation reinforcement is tied, four anti-pull-out anchors are embedded on both sides of the pile hole.

[0019] S3. Install the hanger, lift the pile segment into place, and after the foundation construction is completed and the upper main structure is completed for two floors, clean the anchor bolts and fix the hanger to the pre-embedded anchor bolts on the foundation slab.

[0020] S4. Pile driving: Pile driving can only begin after the concrete of the two above-ground floor slabs has been poured and the foundation strength has reached 100%.

[0021] S5. For pile splicing and driving, the connection between each pile section is achieved using a connecting sleeve. Construction must strictly adhere to the design specifications. After the previous pile section is driven, to facilitate splicing and welding operations, the remaining height of the next pile section should generally be 1.0m.

[0022] S6. Final Driving Standard: The control standard for pile driving construction is based primarily on the designed final pile driving force, supplemented by the pile penetration depth.

[0023] S7. Pile foundation testing: For water-stop steel sleeve static pressure concrete square piles, the single pile bearing capacity and pile body integrity shall be tested in accordance with the requirements of the "Technical Specification for Testing of Building Foundation Pile" JGJ106-2014.

[0024] S8. Piling: Piling can only be sealed after random inspection confirms that it meets the design requirements and the design unit agrees. Before sealing, the debris in the pile hole must be cleaned, the water removed, and the laitance on the hole wall and pile surface cleaned.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The foundation reinforcement work can be carried out while the main structure is under normal construction, and the construction period of the main structure will not be affected.

[0027] 2. After the water-stop steel sleeve is fixed on the foundation cushion as a pile hole, the waterproof layer of the foundation slab is then constructed. Water-stop rings are provided on the lower, middle outer side and upper inner side of the steel sleeve, which has a good waterproof effect.

[0028] 3. Precast concrete piles are assembled from several sections, which facilitates transportation and construction. They do not require large machinery and equipment, have reliable pile quality, and allow for faster construction. They also result in less additional settlement of the building during reinforcement construction.

[0029] 4. The construction equipment is lightweight and flexible, easy to operate, has a small working area, and produces no vibration, noise, or pollution. It is suitable for pile driving operations in basements with limited space and height on construction sites. Solving the problem of water leakage after foundation reinforcement is a crucial step. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the water-stop steel sleeve of the present invention installed on the padding layer;

[0031] Figure 2 This is a right view of the hydraulic cylinder of the present invention mounted on a hanger;

[0032] Figure 3 This is a left view of the hydraulic cylinder of the present invention mounted on a hanger;

[0033] Figure 4 This is a schematic diagram showing the hydraulic cylinder of the present invention located on one side of the hanger;

[0034] Figure 5 This is a top view of the rotating structure of the present invention;

[0035] Figure 6 This is a bottom view of the rotating structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the concrete pile structure of the present invention;

[0037] Figure 8 For the present invention Figure 7 Enlarged view of the structure of region A in the middle;

[0038] Figure 9 This is a top view of the present invention during pile sealing;

[0039] Figure 10 This is a cross-sectional view of the water-stop steel sleeve after installation of the present invention.

[0040] In the diagram: 1. Subbase; 2. Waterstop steel sleeve; 3. Waterproof layer; 4. Concrete layer; 5. C35 micro-expansion concrete; 6. Leveling layer; 7. Waterstop strip one; 8. Waterstop strip two; 9. Connecting plate; 10. C40 micro-expansion concrete; 11. Anchor rod; 12. Base plate; 13. Hanger; 14. Rotating plate; 15. Rotating shaft; 16. Fixing hole; 17. Top plate; 18. Electric hoist; 19. Rotating rod; 20. Rotating cylinder; 21. Mounting plate one; 2 2. Hydraulic rod one; 23. Telescopic rod one; 24. Mounting plate two; 25. Mounting plate three; 26. Hydraulic rod two; 27. Telescopic rod two; 28. Mounting plate four; 29. ​​Horizontal plate; 30. Overlap groove one; 31. Fixing plate; 32. Overlap groove two; 33. Shaft pin; 34. Limiting groove; 35. Limiting block; 36. Mounting plate five; 37. Hydraulic cylinder; 38. Push plate; 39. Concrete pile; 40. Connecting bar; 41. Connecting sleeve; 42. Threaded steel bar. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0045] Please see Figures 1 to 10This invention provides a technical solution: a water-stop steel sleeve static pressure concrete segmental square pile, comprising: a water-stop steel sleeve 2, a cushion layer 1, and a concrete pile 39. The cushion layer 1 is a concrete pouring layer. The lower end of the water-stop steel sleeve 2 is fixed to the upper end of the cushion layer 1 by connecting strips and expansion bolts. The lower end of the water-stop steel sleeve 2 is larger than the upper end and is inverted conical. A water-stop strip 7 is fixedly welded to the outer end of the water-stop steel sleeve 2, and a water-stop strip 8 is installed on the inner side of the upper end. Both the water-stop strip 7 and the water-stop strip 8 are welded from angle steel. Connecting plates 9 are fixedly welded to the four sides of the upper end of the water-stop strip 8. The water-stop strip 8 is inserted upward from the lower end of the water-stop steel sleeve 2 until it contacts the inner wall of the water-stop steel sleeve 2. At this time, the upper end of the connecting plate 9 contacts the inner wall of the upper end of the water-stop steel sleeve 2, and the connecting plate 9 is welded to the inner wall of the water-stop steel sleeve 2.

[0046] A waterproof layer 3 is installed on the upper end of the foundation layer 1. The waterproof layer 3 turns up 150mm when it encounters the steel sleeve. The upper edge of the waterproof layer 3 is firmly bonded to the steel sleeve plate. Two anchor rods 11 are symmetrically fixed on the left and right sides of the upper end of the foundation layer 1. A concrete layer 4 is poured on the upper end of the waterproof layer 3. A base plate 12 is installed on the upper end of the concrete layer 4 by bolts and anchor rods 11. The lower end of the hanger 13 is welded to the upper end of the base plate 12. Several fixed supports are evenly distributed on the side wall of the hanger 13. The top plate 17 is installed on the upper end of the two hangers 13 in the fixed hole 16. The electric hoist 18 is installed on the inner end of the top plate 17. The left and right ends of the top plate 17 are U-shaped. The left and right ends of the top plate 17 are respectively clamped to the upper end of the two hangers 13 and fixed to the upper end of the hangers 13 with bolts. The lower end of the top plate 17 is provided with a hanging rod. The electric hoist 18 is hung on the hanging rod by a hook. The concrete pile 39 can be lifted and inserted into the water-stop steel sleeve 2 by the electric hoist 18.

[0047] A rotating plate 14 is fixedly installed on one side of one of the hangers 13. The upper end of the rotating plate 14 is rotatably connected to a rotating structure via a rotating shaft 15. The rotating structure includes a rotating rod 19, which is L-shaped. A rotating cylinder 20 is fixedly installed at one end of the rotating rod 19, and a mounting plate 21 is fixedly installed at the other end. The rotating cylinder 20 is rotatably sleeved on the rotating shaft 15. A nut is threadedly connected to the upper end of the rotating shaft 15. The lower end of the nut does not contact the upper end of the rotating cylinder 20. By pushing the rotating rod 19, the rotating rod 19 can rotate on one side of the hanger 13. A hydraulic rod 22 is fixedly installed on the upper end of the mounting plate 20, and a mounting plate is fixedly installed at the output end of the hydraulic rod 22. Mounting plate 24 and mounting plate 21 are fixedly installed on both the left and right sides. Telescopic rod 23 is located on the left and right sides of hydraulic rod 22. Hydraulic rod 22 allows mounting plate 24 to move vertically. Mounting plate 3 is fixedly installed on the upper end of mounting plate 24. Hydraulic rod 26 is fixedly installed on one end of mounting plate 3. Mounting plate 4 is fixedly installed on the output end of hydraulic rod 26. Telescopic rod 27 is fixedly installed on both the left and right sides between mounting plate 4.28 and mounting plate 3.25. Telescopic rod 27 is located on the left and right sides of hydraulic rod 26. Hydraulic rod 26 allows mounting plate 3.25 to move horizontally.

[0048] A horizontal plate 29 is fixedly installed on the side wall of mounting plate 28. The length of the horizontal plate 29 is less than the distance between the two hangers 13. Overlap grooves 30 are provided at both ends of the horizontal plate 29. Fixing plates 31 are provided on both sides of the horizontal plate 29. One end of the fixing plate 31 has an overlap groove 32, and the other end has a bolt hole. A limiting groove 34 is fixedly installed at the lower end of the horizontal plate 29. A limiting block 35 is slidably connected within the limiting groove 34. The limiting block 35 is fixed within the limiting groove 34 by bolts. The lower end of the limiting block 35 is located outside the limiting groove 34 and is fixedly connected to the upper end of mounting plate 36 and hydraulic cylinder 37. The output end of the hydraulic cylinder 37 is fixedly equipped with a push plate 38. By activating the hydraulic rod 1 22 and the hydraulic rod 26, the hydraulic cylinder 37 can be moved between the two lifting rods 13 and can move in the vertical direction between the two lifting rods 13. After moving to the appropriate position, the fixing plate 31 is inserted on the left and right sides of the horizontal plate 29, so that the overlapping groove 1 30 and the overlapping groove 2 32 interlock with each other. Then, one end of the shaft pin 33 is passed through one of the fixing holes 16 and the bolt hole to fix the horizontal plate 29 and the hydraulic cylinder 37. At this time, the push plate 38 is located directly above the water-stop steel sleeve 2, and the hydraulic cylinder 37 presses the concrete pile 39 down through the push plate 38.

[0049] Several concrete piles 39 are provided. Each concrete pile 39 has connecting bars 40 at both the upper and lower ends. The outer end of the connecting bar 40 has external threads. The inner end of the connecting bar 40 is fixedly connected to the steel cage inside the concrete pile 39. A connecting sleeve 41 is provided between two adjacent concrete piles 39. The upper and lower ends of the connecting sleeve 41 are provided with connecting discs. The connecting discs have through holes. The connecting bar 40 passes through the through holes and is threaded with a nut, which facilitates the quick connection of two concrete piles 39 together.

[0050] A construction method for a water-stop steel sleeve static pressure concrete segmental square pile, characterized by the following steps:

[0051] S1, Water-stop steel sleeve 2 fabrication, installation, and waterproof layer 3 construction: Before foundation construction, reserve pile driving holes and do a good job of waterproofing. The pile driving holes are made of steel plates with a wall thickness of 5mm to form steel sleeves. The outer side of the steel sleeve is equipped with a waterproof strip of 50*5 angle steel 7 around the top and bottom, and a waterproof strip 8 is installed inside for fixing to the cushion layer 1. The upper opening of the steel sleeve is 100mm larger than the cross-sectional size of the precast pile, and the lower opening is 150mm larger than the cross-sectional size of the precast pile, and it is inverted cone shape.

[0052] After the foundation layer 1 is completed, use M14*100mm expansion bolts to fix the water-stop steel sleeve 2 to the foundation layer 1. After the water-stop steel sleeve 2 is installed, break the foundation layer inside the steel sleeve plate to ensure that the pile tip can be driven into the soil smoothly, vertically, without cracking or breaking in the later stage.

[0053] S2. After the foundation reinforcement is tied, four anti-pull-out anchor rods 11 are embedded on both sides of the pile hole. The diameter of the anchor rod 11 is 30mm and the length is 720mm. The anchor rod 11 protrudes 120mm from the foundation raft surface and is positioned to correspond to the anchor rod fixing position set on the hanger 13. The foundation reinforcement is inspected, the steel sleeve is sealed, and the concrete is poured.

[0054] S3. Install the hanger 13, lift the pile segment into place, and after the foundation construction is completed, clean the anchor bolts after the upper main structure is completed for two floors. Fix the hanger 13 to the pre-embedded anchor bolts 11 on the foundation plate. The hanger 13 should be kept vertical during installation. Tighten the nuts to prevent the hanger 13 from shaking. The electric hoist 18 is lifted into place, and the pile driving construction begins.

[0055] S4. Pile driving: Pile driving can only begin after the concrete of the two above-ground floor slabs has been poured and the foundation strength has reached 100%.

[0056] The length of each concrete pile 39 is determined based on the building's interior clear height and the structural height of the pile driving force transmission frame. The hydraulic cylinder 37 required for pile driving is selected according to the magnitude of the pile driving force. During the pile driving process, monitoring should be strengthened to control the pile driving rate. At the same time, concentrated local construction should be avoided during pile driving to prevent the foundation from lifting.

[0057] Because static pressure pile driving has a compacting effect on the surrounding soil, it must be carried out in a certain order. Otherwise, it will affect the adjacent pile positions, resulting in compaction to one side and the piles not being able to be driven. Therefore, the pile driving sequence should be determined according to the density of the piles during the construction process. Generally, it is carried out symmetrically from the middle to both directions.

[0058] During pile driving, the pile body should be kept vertical, and the verticality deviation should not exceed 1.0% of the pile segment length. The pile driving process should not be interrupted midway and should be driven to the design elevation and pressure value in one go.

[0059] During the pile driving construction, settlement monitoring was conducted 1 to 2 times a day, using leveling with two-order precision closed traverses, and tilt measurement of the building was performed using a theodolite;

[0060] S5. Pile splicing and driving: The connection of each pile section is made by connecting sleeve 41. Construction should be carried out in strict accordance with the design requirements of the specification. After the previous pile section is driven, in order to facilitate the splicing and welding operation, the remaining height of the next pile section should generally be 1.0m.

[0061] S6. Final pressure standard: The control standard for pile driving construction is mainly based on the final designed pile driving force value, and secondarily controlled by the pile penetration depth.

[0062] S7. Pile foundation testing: For static pressure concrete square piles with water-stop steel sleeves, the single pile bearing capacity and pile integrity shall be tested in accordance with the requirements of the "Technical Specification for Testing of Building Foundation Pile" JGJ106-2014.

[0063] The static load test of bearing capacity is controlled by anchor pile driving. The anchor pile driving equipment is used and the driving force is controlled. The bearing capacity test must be carried out after the rest period (28 days). Low strain test should be carried out on the test pile before the bearing capacity test to ensure the integrity of the pile body.

[0064] To prevent eccentric loading, the resultant force center of the jack should coincide with the center of gravity of the force transmission device and the centroid of the pile cross-section, and the direction of the resultant force should be perpendicular to the top surface of the pile.

[0065] S8. Piling: Piling can only be sealed after random inspection confirms that it meets the design requirements and the design unit agrees. Before sealing, the debris in the pile hole must be cleaned, the water must be drained, and the laitance on the hole wall and pile surface must be cleaned.

[0066] Two 18# threaded steel bars (42mm diameter) were welded to four anchor rods at an intersection, and C40 micro-expansion concrete was poured and compacted by vibration. The pile sealing work should be carried out symmetrically and evenly.

[0067] During construction, continuous drainage is adopted. After the superstructure construction is completed, the soil covering is completed, and the concrete for sealing the piles is completed, the dewatering measures must not be stopped 28 days before the concrete curing. Then, C35 micro-expansion concrete 5 is poured on the upper end of the water-stop steel sleeve 2, and finally the leveling layer 6 is laid on the ground.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-stopping steel sleeve static pressure concrete segmental square pile, comprising: Water-stop steel sleeve (2), cushion layer (1) and concrete pile (39), the lower end of the water-stop steel sleeve (2) is fixed to the upper end of the cushion layer (1) by connecting strip and expansion bolt, characterized in that: the lower end of the water-stop steel sleeve (2) is larger than the upper end, the outer end of the water-stop steel sleeve (2) is fixedly welded with a water-stop belt one (7), and the inner side of the upper end is equipped with a water-stop belt two (8); Two anchor rods (11) are symmetrically fixed on the upper left and right sides of the cushion layer (1), and hangers (13) are installed through the anchor rods (11). A top plate (17) is installed on the upper end of the two hangers (13), and an electric hoist (18) is installed on the inner end of the top plate (17). One of the hangers (13) has a rotating plate (14) fixedly installed on one side. The upper end of the rotating plate (14) is rotatably connected to a rotating structure via a rotating shaft (15). A hydraulic cylinder (37) is installed at one end of the rotating structure. A push plate (38) is fixedly installed at the output end of the hydraulic cylinder (37). The rotating structure includes a rotating rod (19), which is L-shaped. A rotating cylinder (20) is fixedly installed at one end of the rotating rod (19), and a mounting plate (21) is fixedly installed at the other end. The rotating cylinder (20) is rotatably sleeved on the rotating shaft (15). The upper end of the rotating shaft (15) is threaded with a nut, and the lower end of the nut does not contact the upper end of the rotating cylinder (20); the upper end of the mounting plate one (21) is fixedly mounted with a hydraulic rod one (22), and the output end of the hydraulic rod one (22) is fixedly mounted with a mounting plate two (24). Telescopic rod one (23) is fixedly mounted on both the left and right sides between the mounting plate one (21) and the mounting plate two (24), and the telescopic rod one (23) is located on the left and right sides of the hydraulic rod one (22); the upper end of the mounting plate two (24) is fixedly mounted with a mounting plate three (25), which is installed... A hydraulic rod 2 (26) is fixedly installed at one end of plate 3 (25), and a mounting plate 4 (28) is fixedly installed at the output end of the hydraulic rod 2 (26). Telescopic rods 2 (27) are fixedly installed on both the left and right sides between mounting plate 4 (28) and mounting plate 3 (25), and telescopic rods 2 (27) are located on the left and right sides of hydraulic rod 2 (26). A horizontal plate (29) is fixedly installed on the side wall of mounting plate 4 (28). The length of the horizontal plate (29) is less than the distance between the two hangers (13). An overlap groove 1 is opened at both the left and right ends of the horizontal plate (29). 30) Fixing plates (31) are provided on both the left and right sides of the horizontal plate (29). One end of the fixing plate (31) is provided with an overlapping groove (32), and the other end of the fixing plate (31) is provided with a bolt hole. A limiting groove (34) is fixedly installed at the lower end of the horizontal plate (29). A limiting block (35) is also slidably connected in the limiting groove (34). The limiting block (35) is fixed in the limiting groove (34) by bolts. The lower end of the limiting block (35) is located outside the limiting groove (34) and is fixedly connected to the upper end of the mounting plate (36) and the hydraulic cylinder (37).

2. The water-stopping steel sleeve static pressure concrete segmental square pile according to claim 1, characterized in that: Both the first waterstop (7) and the second waterstop (8) are made of angle steel. The upper end of the second waterstop (8) is fixedly welded with connecting plates (9) on all four sides. The second waterstop (8) is inserted upward from the lower end of the waterstop steel sleeve (2) until it contacts the inner wall of the waterstop steel sleeve (2). At this time, the upper end of the connecting plate (9) contacts the upper inner wall of the waterstop steel sleeve (2) and the connecting plate (9) is welded to the inner wall of the waterstop steel sleeve (2).

3. The water-stopping steel sleeve static pressure concrete segmental square pile according to claim 2, characterized in that: A waterproof layer (3) is provided on the upper end of the cushion layer (1), and a concrete layer (4) is poured on the upper end of the waterproof layer (3). A base plate (12) is installed on the upper end of the concrete layer (4) by bolts and anchor rods (11). The lower end of the hanger (13) is welded to the upper end of the base plate (12). Several fixing holes (16) are evenly opened on the side wall of the hanger (13).

4. The water-stopping steel sleeve static pressure concrete segmental square pile according to claim 3, characterized in that: The top plate (17) is U-shaped at both ends. The top plate (17) is respectively attached to the upper ends of two hangers (13) and fixed to the upper ends of the hangers (13) with bolts. A hanging rod is provided at the lower end of the top plate (17), and the electric hoist (18) is hung on the hanging rod by a hook.

5. A water-stopping steel sleeve static pressure concrete segmental square pile according to claim 4, characterized in that: The concrete pile (39) is provided in several pieces. Each concrete pile (39) is provided with connecting bars (40) at the upper and lower ends. The outer end of the connecting bar (40) is provided with external threads. A connecting sleeve (41) is provided between two adjacent concrete piles (39). The upper and lower ends of the connecting sleeve (41) are provided with connecting discs. A through hole is provided on the connecting disc. The connecting bar (40) passes through the through hole and is threaded with a nut.

6. The construction method of a water-stop steel sleeve static pressure concrete segmental square pile according to claim 5, characterized in that: Specifically, the steps include the following: S1, Water-stop steel sleeve (2) fabrication, installation, waterproof layer (3) construction, pre-reserve pile driving holes before foundation construction and do a good job of waterproofing treatment, the pile driving holes are made of steel sleeves with a wall thickness of 5mm. S2. After the foundation reinforcement is tied, four anti-pull anchor rods (11) are embedded on both sides of the pile hole. S3. Install the hanger (13), lift the pile segment into place, and after the foundation construction is completed, clean the anchor bolts after the upper main structure is completed for two layers, and fix the hanger (13) on the pre-embedded anchor bolt (11) on the foundation plate. S4. Pile driving: Pile driving can only begin after the concrete of the two above-ground floor slabs has been poured and the foundation strength has reached 100%. S5. Pile splicing and pile driving: The connection of each pile section is made by connecting sleeve (41). Construction is carried out strictly in accordance with the design requirements of the specification. After the previous pile section is driven, in order to facilitate the splicing and welding operation, the remaining height of the next pile section is 1.0m. S6. Final Driving Standard: The control standard for pile driving construction is based primarily on the designed final pile driving force, supplemented by the pile penetration depth. S7. Pile foundation testing, water-stop steel sleeve (2) Static pressure concrete square piles shall be tested for single pile bearing capacity and pile body integrity as required; S8. Piling: Piling can only be sealed after random inspection confirms that it meets the design requirements and the design unit agrees. Before sealing, the debris in the pile hole must be cleaned, the water removed, and the laitance on the hole wall and pile surface cleaned.

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