Fixing device for connecting prestressed pipe pile in pile planting construction and using method of fixing device

Abstract

The invention relates to the technical field of pipe pile connection, aims to solve the problems of long pile connection time, low positioning precision and low efficiency in the prior art, and provides a fixing device for connecting a prestressed pipe pile in pile planting construction and a use method thereof. A hoop is arranged at the top of the bearing plate and detachably located at the top of the bearing plate. A next section of prestressed pipe pile used for fixing is arranged in the hoop, and the outer wall of the next section of prestressed pipe pile is connected with the inner wall of the hoop in a fastened mode. The device has the beneficial effects of being simple in structure, short in pile splicing time, high in positioning precision and high in construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe pile connection, and more specifically, to a fixing device for connecting prestressed pipe piles in pile planting construction and its using method. Background Art

[0002] Currently, in the case where the length of a single-section precast pipe pile is insufficient after rotary drilling, pile connection is required at the position of the rotary drilled hole. However, a single-section precast pile is generally heavy. The common pile connection method is to hoist the upper and lower sections of precast pipe piles separately with steel wires, and multiple people assist in welding the pile connection. This results in a long pile connection time, low positioning accuracy, and slow efficiency. Summary of the Invention

[0003] The present invention aims to provide a fixing device for connecting prestressed pipe piles in pile planting construction and its using method to solve the problems of long pile connection time, low positioning accuracy, and slow efficiency in the prior art.

[0004] The embodiments of the present invention are implemented as follows:

[0005] The embodiment of the present invention provides a fixing device for connecting prestressed pipe piles in pile planting construction, which includes a bearing plate;

[0006] A hoop is provided on the top of the bearing plate, and the hoop is detachably located on the top of the bearing plate;

[0007] The inner part of the hoop is provided with a lower-section prestressed pipe pile for fixing, and the outer wall of the lower-section prestressed pipe pile is tightly connected with the inner wall of the hoop.

[0008] A fixing device for connecting prestressed pipe piles in pile planting construction disclosed in this embodiment, by using the detachable hoop to clamp the lower-section prestressed pipe pile, makes the lower-section prestressed pipe pile suspended and not sink for the time being, which is convenient for welding another pipe pile on the lower-section prestressed pipe pile to realize the extension of the lower-section prestressed pipe pile. Furthermore, a fixing device for connecting prestressed pipe piles in pile planting construction has the beneficial effects of simple structure, short pile connection time, high positioning accuracy, and fast construction efficiency.

[0009] Optionally: The hoop has a first arc-shaped hoop and a second arc-shaped hoop, and the first arc-shaped hoop and the second arc-shaped hoop are symmetrically distributed.

[0010] With such a setting, it is convenient for the hoop to detachably surround the lower-section prestressed pipe pile, facilitating clamping the lower-section prestressed pipe pile for fixing. At the same time, it is convenient to disassemble the hoop to facilitate the further sinking of the lower-section prestressed pipe pile.

[0011] Optionally: The two ends of the first arc-shaped hoop respectively have a first wing plate and a second wing plate, and the two ends of the second arc-shaped hoop respectively have a third wing plate and a fourth wing plate;

[0012] The above-mentioned first wing plate and the above-mentioned third wing plate are mutually attached, and the above-mentioned second wing plate and the above-mentioned fourth wing plate are mutually attached;

[0013] The above-mentioned first wing plate and the above-mentioned third wing plate are mutually bolted, and the above-mentioned second wing plate and the above-mentioned fourth wing plate are mutually bolted.

[0014] With such a setting, it makes the above-mentioned first arc-shaped hoop and the above-mentioned second arc-shaped hoop convenient for fastening the next section of prestressed pipe pile. The above-mentioned first wing plate, the above-mentioned second wing plate, the above-mentioned third wing plate and the above-mentioned fourth wing plate are convenient for bolt connection, ensuring the firmness of the mutual clamping of the above-mentioned first arc-shaped hoop and the above-mentioned second arc-shaped hoop, and preventing the above-mentioned first arc-shaped hoop and the above-mentioned second arc-shaped hoop from loosening the next section of prestressed pipe pile.

[0015] Optionally: A first high-strength bolt and a second high-strength bolt are connected between the above-mentioned first wing plate and the above-mentioned third wing plate, and a third high-strength bolt and a fourth high-strength bolt are connected between the above-mentioned second wing plate and the above-mentioned fourth wing plate.

[0016] With such a setting, the connection or disassembly between the above-mentioned first arc-shaped hoop and the above-mentioned second arc-shaped hoop is realized through the above-mentioned first high-strength bolt, the above-mentioned second high-strength bolt, the above-mentioned third high-strength bolt and the above-mentioned fourth high-strength bolt, which not only ensures the connection strength but also is convenient for disassembly and assembly, and is beneficial to the continuous fixation and welding elongation of the pipe pile.

[0017] Optionally: A number of first stiffening plates are fixedly connected at the angle between the above-mentioned first wing plate and the above-mentioned first arc-shaped hoop, and a number of the above-mentioned first stiffening plates are evenly distributed along the axial direction of the hoop at the angle between the above-mentioned first wing plate and the above-mentioned first arc-shaped hoop;

[0018] A number of second stiffening plates are fixedly connected at the angle between the above-mentioned second wing plate and the above-mentioned first arc-shaped hoop, and a number of the above-mentioned second stiffening plates are evenly distributed along the axial direction of the hoop at the angle between the above-mentioned second wing plate and the above-mentioned first arc-shaped hoop;

[0019] A number of third stiffening plates are fixedly connected at the angle between the above-mentioned third wing plate and the above-mentioned second arc-shaped hoop, and a number of the above-mentioned third stiffening plates are evenly distributed along the axial direction of the hoop at the angle between the above-mentioned third wing plate and the above-mentioned second arc-shaped hoop;

[0020] A number of fourth stiffening plates are fixedly connected at the angle between the above-mentioned fourth wing plate and the above-mentioned second arc-shaped hoop, and a number of the above-mentioned fourth stiffening plates are evenly distributed along the axial direction of the hoop at the angle between the above-mentioned fourth wing plate and the above-mentioned second arc-shaped hoop.

[0021] With such an arrangement, a number of the above-mentioned first stiffening plates, a number of the above-mentioned second stiffening plates, a number of the above-mentioned third stiffening plates, and a number of the above-mentioned fourth stiffening plates can improve the structural strength of the above-mentioned hoop, enabling the above-mentioned hoop to firmly clamp on the above-mentioned lower-section prestressed pipe pile, which is beneficial to fixing the above-mentioned lower-section prestressed pipe pile.

[0022] Optionally: A first I-beam and a second I-beam are provided between the above-mentioned hoop and the above-mentioned bearing plate. The first I-beam and the second I-beam are parallel to each other and spaced apart. One side of the first I-beam and the second I-beam close to the above-mentioned bearing plate is welded to the above-mentioned bearing plate, and one end of the above-mentioned hoop close to the above-mentioned bearing plate abuts against one side of the first I-beam and the second I-beam close to the above-mentioned hoop.

[0023] The gap between the first I-beam and the second I-beam is smaller than the diameter of the above-mentioned hoop.

[0024] With such an arrangement, the first I-beam and the second I-beam raise the above-mentioned hoop, preventing the above-mentioned hoop from contacting the above-mentioned bearing plate or the ground, and preventing the first I-beam and the second I-beam from being corroded. The diameter of the above-mentioned hoop being greater than the gap between the first I-beam and the second I-beam facilitates the above-mentioned hoop to be erected on the tops of the first I-beam and the second I-beam. At the same time, when water is drained during the sinking process of the above-mentioned lower-section prestressed pipe pile, the arrangement of the first I-beam and the second I-beam facilitates drainage.

[0025] Optionally: An upper-section prestressed pipe pile is provided at the top end of the above-mentioned lower-section prestressed pipe pile, and a lifting device is provided on the ground on one side of the above-mentioned upper-section prestressed pipe pile, and the above-mentioned upper-section prestressed pipe pile is suspended on the above-mentioned lifting device.

[0026] With such an arrangement, the above-mentioned upper-section prestressed pipe pile is lifted by the above-mentioned lifting device, which facilitates the welding of the above-mentioned upper-section prestressed pipe pile to the above-mentioned lower-section prestressed pipe pile, saving time and effort.

[0027] Optionally: A through hole is opened at the center position of the above-mentioned bearing plate, the above-mentioned lower-section prestressed pipe pile penetrates through the through hole, a rotary drilling hole is opened at the bottom surface corresponding to the through hole, and the above-mentioned lower-section prestressed pipe pile is located inside the rotary drilling hole.

[0028] With such an arrangement, the above-mentioned bearing plate can disperse the pressure transmitted from above, preventing the above-mentioned hoop from sinking into the bottom surface, and at the same time, it does not affect the sinking of the above-mentioned lower-section prestressed pipe pile into the inside of the rotary drilling hole.

[0029] Optionally: The size of the above-mentioned bearing plate is 1.5m×1.5m, and the height of the above-mentioned hoop is 500mm.

[0030] With such settings, the size of the above-mentioned bearing plate can ensure that the fixing device will not sink to the bottom surface after being stressed, and has the effect of dispersing force. The size of the above-mentioned hoop ensures that the above-mentioned hoop has enough friction surface to contact with the next prestressed pipe pile, so that the above-mentioned hoop is clamped on the outer wall of the next prestressed pipe pile.

[0031] In an implementation manner of this embodiment: A method for using a fixing device for connecting prestressed pipe piles in pile planting construction is also provided. First, the above-mentioned hoop clamps the next prestressed pipe pile, and the first high-strength bolt, the second high-strength bolt, the third high-strength bolt, and the fourth high-strength bolt are used to clamp the first arc-shaped hoop and the second arc-shaped hoop on the outer wall of the next prestressed pipe pile. The structural strength of the above-mentioned hoop is strengthened by a number of the above-mentioned first stiffening plates, a number of the above-mentioned second stiffening plates, a number of the above-mentioned third stiffening plates, and a number of the above-mentioned fourth stiffening plates. After the above-mentioned hoop clamps the next prestressed pipe pile, the above-mentioned hoop is placed on the first I-beam and the second I-beam, and the first I-beam and the second I-beam are welded to the above-mentioned bearing plate;

[0032] Secondly, after the next prestressed pipe pile is fixed firmly, the above-mentioned upper prestressed pipe pile is hoisted to the top of the next prestressed pipe pile and aligned by using the steel wire rope on the above-mentioned lifting tool. After alignment, the plane position and verticality of the above-mentioned upper prestressed pipe pile are adjusted;

[0033] Then, spot welding is performed at the connection between the next prestressed pipe pile and the above-mentioned upper prestressed pipe pile;

[0034] Finally, the next prestressed pipe pile and the above-mentioned upper prestressed pipe pile are welded and fixed together.

[0035] Based on the above description, a fixing device for connecting prestressed pipe piles in pile planting construction and its using method disclosed by the present invention have the beneficial effects of simple structure, short pile connection time, high positioning accuracy, and fast construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is the front view of a fixing device for connecting prestressed pipe piles in pile planting construction in an embodiment of the present invention;

[0038] Figure 2The side view of a fixing device for connecting prestressed pipe piles in pile planting construction in an embodiment of the present invention;

[0039] Figure 3 The top view of a fixing device for connecting prestressed pipe piles in pile planting construction in an embodiment of the present invention;

[0040] Figure 4 The engineering structure diagram of a fixing device for connecting prestressed pipe piles in pile planting construction in an embodiment of the present invention.

[0041] Icon: 1 - bearing plate, 2 - hoop, 3 - lower section of prestressed pipe pile, 4 - first arc-shaped hoop, 5 - second arc-shaped hoop, 6 - first wing plate, 7 - second wing plate, 8 - third wing plate, 9 - fourth wing plate, 10 - first high-strength bolt, 11 - second high-strength bolt, 12 - third high-strength bolt, 13 - fourth high-strength bolt, 14 - first stiffening plate, 15 - second stiffening plate, 16 - third stiffening plate, 17 - fourth stiffening plate, 18 - first I-beam, 19 - second I-beam, 20 - upper section of prestressed pipe pile, 21 - lifting tool, 22 - through hole, 23 - rotary drilling hole. Detailed implementation manners

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] Embodiment

[0045] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , this embodiment proposes a fixing device for connecting prestressed pipe piles in pile planting construction, including a bearing plate 1;

[0046] A hoop 2 is provided on the top of the bearing plate 1, and the hoop 2 is detachably located on the top of the bearing plate 1;

[0047] The lower section of the prestressed pipe pile 3 for fixing is provided inside the hoop 2, and the outer wall of the lower section of the prestressed pipe pile 3 is tightly connected to the inner wall of the hoop 2.

[0048] In a prestressed pipe pile fixing device for pile planting construction disclosed in this implementation scheme, since a detachable hoop 2 is used to clamp the next section of prestressed pipe pile 3, the next section of prestressed pipe pile 3 is suspended and does not sink for the time being, which is convenient for welding another pipe pile to the next section of prestressed pipe pile 3, realizing the extension of the next section of prestressed pipe pile 3. Furthermore, the prestressed pipe pile fixing device for pile planting construction has the beneficial effects of simple structure, short pile connection time, high positioning accuracy and fast construction efficiency.

[0049] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in, the hoop 2 has a first arc-shaped hoop 4 and a second arc-shaped hoop 5. The first arc-shaped hoop 4 and the second arc-shaped hoop 5 are symmetrically distributed with each other, which is convenient for the hoop 2 to detachably surround the next section of prestressed pipe pile 3, facilitating the clamping of the next section of prestressed pipe pile 3 to achieve fixation. At the same time, it is convenient to disassemble the hoop 2, facilitating the continuous sinking of the next section of prestressed pipe pile 3.

[0050] Both ends of the first arc-shaped hoop 4 are respectively provided with a first wing plate 6 and a second wing plate 7; both ends of the second arc-shaped hoop 5 are respectively provided with a third wing plate 8 and a fourth wing plate 9; the first wing plate 6 and the third wing plate 8 are mutually attached; the second wing plate 7 and the fourth wing plate 9 are mutually attached; the first wing plate 6 and the third wing plate 8 are bolted to each other, and the second wing plate 7 and the fourth wing plate 9 are bolted to each other, which makes it convenient for the first arc-shaped hoop 4 and the second arc-shaped hoop 5 to fasten the next section of prestressed pipe pile 3. The first wing plate 6, the second wing plate 7, the third wing plate 8 and the fourth wing plate 9 are convenient for bolt connection, ensuring the firmness of the mutual clamping between the first arc-shaped hoop 4 and the second arc-shaped hoop 5, and preventing the first arc-shaped hoop 4 and the second arc-shaped hoop 5 from loosening the next section of prestressed pipe pile 3.

[0051] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in, a first high-strength bolt 10 and a second high-strength bolt 11 are connected between the first wing plate 6 and the third wing plate 8, and a third high-strength bolt 12 and a fourth high-strength bolt 13 are connected between the second wing plate 7 and the fourth wing plate 9. The connection or disassembly between the first arc-shaped hoop 4 and the second arc-shaped hoop 5 is realized through the first high-strength bolt 10, the second high-strength bolt 11, the third high-strength bolt 12 and the fourth high-strength bolt 13. This not only ensures the connection strength but also facilitates disassembly and assembly, which is beneficial to the continuous fixation and welding extension of the pipe pile.

[0052] A number of first stiffening plates 14 are fixedly connected at the included angle between the first wing plate 6 and the first arc-shaped hoop 4, and the number of first stiffening plates 14 are evenly distributed along the axial direction of the hoop 2 at the included angle between the first wing plate 6 and the first arc-shaped hoop 4;

[0053] A number of second stiffening plates 15 are fixedly connected at the angle between the second wing plate 7 and the first arc-shaped hoop 4, and the number of second stiffening plates 15 are evenly distributed along the axial direction of the hoop 2 at the angle between the second wing plate 7 and the first arc-shaped hoop 4;

[0054] A number of third stiffening plates 16 are fixedly connected at the angle between the third wing plate 8 and the second arc-shaped hoop 5, and the number of third stiffening plates 16 are evenly distributed along the axial direction of the hoop 2 at the angle between the third wing plate 8 and the second arc-shaped hoop 5;

[0055] A number of fourth stiffening plates 17 are fixedly connected at the angle between the fourth wing plate 9 and the second arc-shaped hoop 5, and the number of fourth stiffening plates 17 are evenly distributed along the axial direction of the hoop 2 at the angle between the fourth wing plate 9 and the second arc-shaped hoop 5. The number of first stiffening plates 14, the number of second stiffening plates 15, the number of third stiffening plates 16 and the number of fourth stiffening plates 17 can improve the structural strength of the hoop 2, enable the hoop 2 to firmly clamp the next prestressed pipe pile 3, and are beneficial to fixing the next prestressed pipe pile 3.

[0056] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in, between the hoop 2 and the bearing plate 1, there are a first I-beam 18 and a second I-beam 19. The first I-beam 18 and the second I-beam 19 are parallel to each other and spaced apart. The sides of the first I-beam 18 and the second I-beam 19 close to the bearing plate 1 are welded to the bearing plate 1, and one end of the hoop 2 close to the bearing plate 1 abuts against the sides of the first I-beam 18 and the second I-beam 19 close to the hoop 2; the gap between the first I-beam 18 and the second I-beam 19 is smaller than the diameter of the hoop 2. The first I-beam 18 and the second I-beam 19 raise the hoop 2 to avoid the hoop 2 contacting the bearing plate 1 or the ground and avoid corrosion of the first I-beam 18 and the second I-beam 19. The diameter of the hoop 2 being greater than the gap between the first I-beam 18 and the second I-beam 19 facilitates the hoop 2 to be erected on the tops of the first I-beam 18 and the second I-beam 19. At the same time, during the sinking process of the next prestressed pipe pile 3, if there is water drainage, the arrangement of the first I-beam 18 and the second I-beam 19 facilitates drainage.

[0057] At the top end of the next prestressed pipe pile 3, there is an upper prestressed pipe pile 20. On the ground on one side of the upper prestressed pipe pile 20, there is a lifting tool 21. The upper prestressed pipe pile 20 is suspended on the lifting tool 21. By lifting the upper prestressed pipe pile 20 with the lifting tool 21, it is convenient to weld the upper prestressed pipe pile 20 to the next prestressed pipe pile 3, saving time and effort.

[0058] A through hole 22 is provided at the center of the bearing plate 1. The next section of prestressed pipe pile 3 passes through the through hole 22. A rotary drilling hole 23 is provided at the bottom surface corresponding to the through hole 22. The next section of prestressed pipe pile 3 is located inside the rotary drilling hole 23. The bearing plate 1 can disperse the pressure transmitted from the upper part, preventing the hoop 2 from sinking into the bottom surface. At the same time, it does not affect the sinking of the next section of prestressed pipe pile 3 into the rotary drilling hole 23.

[0059] The size of the bearing plate 1 is 1.5m × 1.5m, and the height of the hoop 2 is 500mm. The size of the bearing plate 1 can ensure that the fixing device will not sink into the bottom surface after being stressed and has the function of dispersing force. The size of the hoop 2 ensures that the hoop 2 has enough friction surface to contact the next section of prestressed pipe pile 3, so that the hoop 2 is clamped on the outer wall of the next section of prestressed pipe pile 3.

[0060] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In this embodiment, the next section of prestressed pipe pile 3 is fixed by using the fixing device. The upper section of prestressed pipe pile 20 is hoisted by the steel wire rope of the lifting tool 21. The upper section of prestressed pipe pile 20 is manually fine-tuned to align the next section of prestressed pipe pile 3 and the upper section of prestressed pipe pile 20, so as to improve the efficiency and concentric positioning accuracy. The hoop 2 is fixed by the first high-strength bolt 10, the second high-strength bolt 11, the third high-strength bolt 12 and the fourth high-strength bolt 13. The hoop 2 clamps the next section of prestressed pipe pile 3 and is placed on the first I-beam 18 and the second I-beam 19, and then placed on the bearing plate 1 on the ground.

[0061] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In this embodiment, the outer diameters of the next section of prestressed pipe pile 3 and the upper section of prestressed pipe pile 20 are 600mm, the rotary drilling hole 23 on the ground is 700mm, the first I-beam 18 and the second I-beam 19 are No. 20 I-beams, the thicknesses of the first wing plate 6, the second wing plate 7, the third wing plate 8 and the fourth wing plate 9 are all 1cm, and the first high-strength bolt 10, the second high-strength bolt 11, the third high-strength bolt 12 and the fourth high-strength bolt 13 are all 8.8-grade bolts.

[0062] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4, in an implementation manner of this embodiment: A method for using a fixing device for connecting prestressed pipe piles in pile driving construction is further provided. First, the hoop 2 clamps the lower section of the prestressed pipe pile 3, and the first arc-shaped hoop 4 and the second arc-shaped hoop 5 are clamped on the outer wall of the lower section of the prestressed pipe pile 3 through the first high-strength bolt 10, the second high-strength bolt 11, the third high-strength bolt 12, and the fourth high-strength bolt 13. The structural strength of the hoop 2 is strengthened by a number of first stiffening plates 14, a number of second stiffening plates 15, a number of third stiffening plates 16, and a number of fourth stiffening plates 17. After the hoop 2 clamps the lower section of the prestressed pipe pile 3, the hoop 2 is placed on the first I-beam 18 and the second I-beam 19, and the first I-beam 18 and the second I-beam 19 are welded to the bearing plate 1;

[0063] Secondly, after the lower section of the prestressed pipe pile 3 is fixed firmly, the upper section of the prestressed pipe pile 20 is hoisted by the steel wire rope on the lifting appliance 21 to the top of the lower section of the prestressed pipe pile 3 and aligned. After alignment, the plane position and verticality of the upper section of the prestressed pipe pile 20 are adjusted;

[0064] Then, spot welding is performed at the connection between the lower section of the prestressed pipe pile 3 and the upper section of the prestressed pipe pile 20;

[0065] Finally, the lower section of the prestressed pipe pile 3 and the upper section of the prestressed pipe pile 20 are welded and fixed together.

[0066] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for fixing prestressed pipe piles for pile construction, characterized in that: It comprises a pressure plate (1); A hoop (2) is provided on the top of the pressure-bearing plate (1), and the hoop (2) is detachably located on the top of the pressure-bearing plate (1); The inside of the hoop (2) is provided with a next section of prestressed pipe pile (3) for fixing, and the outer wall of the next section of prestressed pipe pile (3) and the inner wall of the hoop (2) are tightly connected to each other.

2. The device for fixing prestressed pipe piles for pile construction according to claim 1 is characterized in that: The hoop (2) comprises a first arc-shaped hoop (4) and a second arc-shaped hoop (5), and the first arc-shaped hoop (4) and the second arc-shaped hoop (5) are symmetrically distributed with respect to each other.

3. The device for fixing prestressed pipe piles during pile construction according to claim 2 is characterized in that: The first arc-shaped hoop (4) has a first wing plate (6) and a second wing plate (7) at both ends, and the second arc-shaped hoop (5) has a third wing plate (8) and a fourth wing plate (9) at both ends; The first wing panel (6) and the third wing panel (8) are in contact with each other, and the second wing panel (7) and the fourth wing panel (9) are in contact with each other; The first wing panel (6) and the third wing panel (8) are bolted to each other, and the second wing panel (7) and the fourth wing panel (9) are bolted to each other.

4. The device for fixing prestressed pipe piles during pile construction according to claim 3 is characterized in that: A first high-strength bolt (10) and a second high-strength bolt (11) are connected between the first wing plate (6) and the third wing plate (8), and a third high-strength bolt (12) and a fourth high-strength bolt (13) are connected between the second wing plate (7) and the fourth wing plate (9).

5. The device for fixing prestressed pipe piles during pile construction according to claim 3 is characterized in that: A plurality of first stiffening plates (14) are fixedly connected at the angle between the first wing plate (6) and the first arc-shaped hoop (4), and the plurality of first stiffening plates (14) are evenly distributed at the angle between the first wing plate (6) and the first arc-shaped hoop (4) along the axial direction of the hoop (2); A plurality of second stiffening plates (15) are fixedly connected at the angle between the second wing plate (7) and the first arc-shaped hoop (4), and the plurality of second stiffening plates (15) are evenly distributed at the angle between the second wing plate (7) and the first arc-shaped hoop (4) along the axial direction of the hoop (2); A plurality of third stiffening plates (16) are fixedly connected at the angle between the third wing plate (8) and the second arc-shaped hoop (5), and the plurality of third stiffening plates (16) are evenly distributed at the angle between the third wing plate (8) and the second arc-shaped hoop (5) along the axial direction of the hoop (2); A plurality of fourth stiffening plates (17) are fixedly connected at the angle between the fourth wing plate (9) and the second arc-shaped hoop (5); the plurality of fourth stiffening plates (17) are evenly distributed at the angle between the fourth wing plate (9) and the second arc-shaped hoop (5) along the axial direction of the clamp (2).

6. The device for fixing prestressed pipe piles during pile construction according to claim 1 is characterized in that: A first I-beam (18) and a second I-beam (19) are provided between the hoop (2) and the pressure plate (1); the first I-beam (18) and the second I-beam (19) are parallel to and spaced from each other; the first I-beam (18) and the second I-beam (19) are welded to the pressure plate (1) at one side close to the pressure plate (1); and one end of the hoop (2) close to the pressure plate (1) abuts against one side of the first I-beam (18) and the second I-beam (19) close to the hoop (2); The gap between the first I-beam (18) and the second I-beam (19) is smaller than the diameter of the hoop (2).

7. The device for fixing prestressed pipe piles during pile construction according to claim 1 is characterized in that: A previous prestressed pipe pile (20) is arranged at the top of the next prestressed pipe pile (3), a hanger (21) is arranged on the ground at one side of the previous prestressed pipe pile (20), and the previous prestressed pipe pile (20) is suspended on the hanger (21).

8. The device for fixing prestressed pipe piles during pile construction according to claim 1 is characterized in that: A through hole (22) is provided at the center of the pressure plate (1), and the next section of prestressed pipe pile (3) passes through the through hole (22). A rotary hole (23) is provided on the bottom surface corresponding to the through hole (22), and the next section of prestressed pipe pile (3) is located inside the rotary hole (23).

9. The device for fixing prestressed pipe piles during pile construction according to claim 1 is characterized in that: The size of the pressure plate (1) is 1.5m×1.5m, and the height of the clamp (2) is 500mm.

10. A method for using a prestressed pipe pile fixing device for pile construction according to any one of claims 1 to 9, characterized in that: First, the hoop (2) clamps the next section of prestressed pipe pile (3), and the first arc hoop (4) and the second arc hoop (5) are clamped on the outer wall of the next section of prestressed pipe pile (3) by the first high-strength bolt (10), the second high-strength bolt (11), the third high-strength bolt (12) and the fourth high-strength bolt (13), and the structural strength of the hoop (2) is strengthened by a plurality of the first stiffening plates (14), a plurality of the second stiffening plates (15), a plurality of the third stiffening plates (16) and a plurality of the fourth stiffening plates (17). After the hoop (2) clamps the next section of prestressed pipe pile (3), the hoop (2) is placed on the first I-beam (18) and the second I-beam (19), and the first I-beam (18) and the second I-beam (19) are welded to the pressure plate (1); Secondly, after the next section of the prestressed pipe pile (3) is fixed firmly, the previous section of the prestressed pipe pile (20) is hoisted on the top of the next section of the prestressed pipe pile (3) using the steel wire rope on the hoist (21) and aligned. After alignment, the plane position and verticality of the previous section of the prestressed pipe pile (20) are adjusted; Then, spot welding is performed on the connection between the next section of prestressed pipe pile (3) and the previous section of prestressed pipe pile (20); Finally, the next section of prestressed pipe pile (3) and the previous section of prestressed pipe pile (20) are welded and fixed together.

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