Pipe pile splicing positioning device

Abstract

The utility model provides a pipe pile splicing positioning device which comprises a sleeve arranged on the outer side of a pipe pile head and an inter-pipe positioning mechanism, the inter-pipe positioning mechanism comprises a positioning platform, an outer supporting piece and an inner supporting piece, and the outer supporting piece is movably arranged on the positioning platform and can move in the direction close to or away from the sleeve so as to abut against the inner wall of the sleeve; the inner supporting piece is movably arranged on the positioning platform and can move in the direction close to or away from the pipe pile head so as to abut against the outer wall of the pipe pile head. By arranging the positioning platform, the inner supporting piece and the outer supporting piece, a force transmission system of the casing pipe, the outer supporting piece, the positioning platform, the inner supporting piece and the pipe pile head is formed, the overall force transmission path is simple, clear and reasonable, enough support can be provided for the casing pipe to resist the lateral pressure of the outer side soil body borne by the casing pipe, and the construction efficiency is improved. The sleeve is prevented from deviating or inclining, and the construction quality of pile splicing is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of construction technology of building pile foundation engineering, and in particular relates to a pipe pile splicing and positioning device. Background Technology

[0002] Precast pipe piles are widely used in pile foundation construction due to their high strength, good driveability, certain penetration power, high bearing capacity, and fast construction progress. However, due to complex geology and large variations in the depth of the bearing stratum, over-pile delivery is prone to occur during pipe pile construction, necessitating pile splicing. When splicing using cast-in-place piles, the soil at the location of the pipe pile must first be excavated to expose the pile head. Then, the center of the casing used for shaping the cast-in-place pile is aligned with the center of the pipe pile, followed by backfilling and compaction to embed the casing into the soil. However, it is difficult to ensure uniform stress around the casing during this process, leading to casing displacement or tilting, and ultimately, the splice position and verticality may not meet the requirements. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a pipe pile splicing positioning device, which solves the problem that the casing is prone to displacement or tilting during the backfilling and compaction of earthwork.

[0004] The technical solution adopted by this utility model is: a pipe pile splicing positioning device, including a sleeve disposed on the outside of the pipe pile head, the sleeve being coaxially disposed with the pipe pile head, and further including an inter-pipe positioning mechanism for positioning the sleeve, the inter-pipe positioning mechanism comprising:

[0005] A positioning platform is used to be placed on the upper part of the pile head of the pipe pile;

[0006] An external support member is movably mounted on the positioning platform and can move toward or away from the sleeve to abut against the inner wall of the sleeve.

[0007] The inner support member is movably mounted on the positioning platform and can move towards or away from the pile head to abut against the outer wall of the pile head.

[0008] Furthermore, the positioning platform has a positioning center, and the plurality of external support members and / or the plurality of external support members are capable of radial movement relative to the positioning center.

[0009] Furthermore, the inner support and the outer support are evenly and alternately arranged on the positioning platform.

[0010] Furthermore, the positioning platform includes a plurality of positioning limbs arranged radially relative to the positioning center, and the outer support and the inner support are respectively disposed on different positioning limbs.

[0011] Furthermore, the external support includes a fixing part and a limiting part. The fixing part is movably disposed on the positioning limb and can move along the length direction of the positioning limb. One end of the fixing part protrudes from the positioning limb, and the limiting part is connected to the protruding end of the fixing part.

[0012] Furthermore, the limiting portion extends axially along the pile head of the pipe pile.

[0013] Furthermore, the fixing part is fixed to the upper end face of the positioning limb by at least one fastener. The fastener includes a collar with an opening and a wrench disposed at the opening of the collar. The collar is sleeved on the fixing part, and the wrench is used to adjust the tightness of the collar and lock the collar.

[0014] Furthermore, the inner support member includes a sleeve, a locking member disposed at the opening of the sleeve, and a stop block disposed at the opposite end of the locking member. The opening of the sleeve is sleeved onto the limb plate with the opening facing upward, so that the stop block abuts against the outer wall of the pile head below the positioning platform.

[0015] Furthermore, the positioning limb has a square cross-sectional shape, and the sleeve has an inner cavity that matches the existing cross-section.

[0016] The advantages and positive effects of this utility model are:

[0017] (1) The pipe positioning mechanism proposed in this application forms a force transmission system of casing-outer support-positioning platform-inner support-pile head by setting up a positioning platform, inner support and outer support. The overall force transmission path is simple, clear and reasonable, so that the pipe positioning mechanism can provide sufficient support to the casing to resist the lateral pressure of the outer soil on the casing, and avoid the casing from shifting or tilting during the backfilling and compaction of soil outside the casing, thus ensuring the construction quality of the pile splicing.

[0018] (2) By setting multiple inner support members and / or multiple outer support members to move radially relative to the positioning center of the positioning platform, the positions of the inner support members and outer support members can be easily adjusted so that they abut against the outer wall of the pipe pile head and the inner wall of the casing respectively. This is applicable to different pipe pile head diameters and different casing diameters, which improves the applicability of the device and reduces construction costs.

[0019] (3) By setting positioning limbs and inner and outer support components evenly and alternately on the positioning platform, the circumferential force of the casing is more balanced and the load can be evenly transferred to the pile head, thus ensuring the overall stability of the device.

[0020] (4) The pipe pile splicing positioning method proposed in this application can quickly and conveniently locate the position of the casing. The overall structure is stable and easy to operate and control. It can effectively prevent the casing from shifting and tilting during the backfilling and compaction of the soil, and keep the verticality of the casing the same as that of the pipe pile head, thereby ensuring the verticality of the splicing and improving the construction quality of the splicing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the inter-pipe positioning mechanism according to a specific embodiment of the present invention;

[0023] Figure 3 This is a front view of a pipe positioning mechanism according to a specific embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a fastener structure according to a specific embodiment of the present invention;

[0025] Figure 5 This is a front view of the inner support member according to a specific embodiment of this utility model;

[0026] Figure 6 This is a side view of the inner support member according to a specific embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of a positioning method according to a specific embodiment of the present invention.

[0028] In the picture:

[0029] 1. Positioning platform; 11. Positioning limb; 2. Fastener; 21. Collar; 22. Wrench; 23. Pin and nut; 24. Washer; 25. Washer ring; 3. External support; 31. Fixing part; 32. Limiting part; 4. Internal support; 41. Hoop; 42. Locking part; 43. Stop block; 5. Pipe pile head; 6. Sleeve. Detailed Implementation

[0030] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0031] like Figures 1 to 3 As shown, this utility model proposes a pipe pile splicing positioning device, including a sleeve 6 disposed on the outside of the pipe pile head 5, the sleeve 6 being coaxially disposed with the pipe pile head 5, and also including a pipe positioning mechanism for positioning the sleeve 6, the pipe positioning mechanism including:

[0032] Positioning platform 1 is used to place on the upper part of the pile head 5 of the pipe pile;

[0033] The outer support 3 is movably mounted on the positioning platform 1 and can move toward or away from the sleeve 6 to abut against the inner wall of the sleeve 6.

[0034] The inner support 4 is movably mounted on the positioning platform 1 and can move toward or away from the pile head 5 to abut against the outer wall of the pile head 5.

[0035] In this embodiment, a splice needs to be installed on the upper part of the pile head 5. The sleeve 6 serves as a template for the splice concrete. The pipe positioning mechanism is used to fix the sleeve 6 at a set position on the outside of the pile head 5. The positioning platform 1 in this application provides the foundation for the inner support 4 and the outer support 3. By adjusting the position of the inner support 4, the inner support 4 can abut against the outer wall of the pile head 5, so that the positioning platform 1 can be stably placed on the upper part of the pile head 5. By adjusting the position of the outer support 3, the outer support 3 can abut against the inner wall of the sleeve 6. Through the cooperation of the positioning platform 1, the inner support 4, and the outer support 3, the sleeve 6 can be positioned relative to the positioning platform. 1. The casing is fixed to the pile head 5. When backfilling and compacting are carried out on the outside of the casing 6, the outer wall of the casing 6 is subjected to the lateral pressure of the soil, and the pressure is transmitted in sequence to the outer support 3, the positioning platform 1 and the inner support 4, and finally to the pile head 5. The overall force transmission path is simple, clear and reasonable, so that the positioning mechanism between the casings can provide sufficient support to the casing 6 to resist the lateral pressure of the soil on the outside of the casing 6, so that its axis is always aligned with the axis of the pile head 5. This avoids the casing 6 from shifting or tilting during the backfilling and compaction process on the outside of the casing 6, which would cause the pile splice position to shift or the verticality to not meet the requirements, thus ensuring the construction quality of the pile splice.

[0036] In this embodiment, the positioning platform 1 is disposed on the upper part of the pile head 5, and its lower end face is in contact with the top end face of the pile head 5. To ensure the stability of the positioning platform 1, the lower end face of the positioning platform 1 is designed as a planar structure. The size of the positioning platform 1 is preferably larger than the inner diameter of the pile head 5, and it has enough space for the inner support 4 and the outer support 3 to move, so as to meet the need to adjust the position of the inner support 4 and the outer support 3. Its specific shape is not required here.

[0037] In a preferred embodiment of this application, the positioning platform 1 has a positioning center, and multiple inner support members 4 and / or multiple outer support members 3 can move radially relative to the positioning center. Since the cross-sectional shape of the pipe pile head 5 and the casing 6 is annular, by setting the positioning center and the moving direction of the inner support members 4 and / or the outer support members 3, it is convenient for the operator to align the positioning center of the positioning platform 1 with the positioning center of the pipe pile head 5, so as to ensure that the positioning center of the positioning platform 1, the pipe pile head 5 and the casing 6 are aligned. Moreover, this arrangement makes the multiple inner support members 4 abutting against the outer wall of the pipe pile head 5 and the multiple outer support members 3 abutting against the inner wall of the casing 6 all arranged around the positioning center, which improves the balance of force on the positioning platform 1 and is conducive to improving the stability of the overall structure.

[0038] Furthermore, based on the above embodiments, the inner support member 4 and the outer support member 3 are uniformly and alternately arranged on the positioning platform 1; that is, the inner support member 4 and the outer support member 3 are uniformly arranged circumferentially relative to the positioning center of the positioning platform 1, and the inner support member 4 and the outer support member 3 are alternately arranged in sequence. Preferably, there is the same spacing between adjacent inner support members 4 and outer support members 3. Through the above technical solution, it can be ensured that all parts of the casing 6 are evenly supported by the outer support member 3 in the circumferential direction, and the load can be evenly transferred to the pile head 5 of the pipe pile through the positioning platform 1 and the inner support member 4, which further improves the stress balance and stability of the overall structure. At the same time, the positions of the inner support member 4 and the outer support member 3 are staggered to ensure that they can move radially relative to the positioning center, which improves the possibility of process implementation and the convenience of processing and manufacturing.

[0039] In the embodiments of this application, such as Figure 1 As shown, the positioning platform 1 includes several positioning limbs 11 arranged radially relative to the positioning center. Outer support members 3 and inner support members 4 are respectively disposed on different positioning limbs 11, and the number of both is the same. The number of positioning limbs 11 is the same as the sum of the number of outer support members 3 and inner support members 4. Each positioning limb 11 is provided with one outer support member 3 or one inner support member 4. To ensure that the inner support members 4 and outer support members 3 are evenly distributed, the number of positioning limbs 11 is even. Preferably, the number of positioning limbs 11 is four or more, and the specific number can be set as needed, without limitation here. By setting the positioning limbs 11, the outer support members 3 and inner support members 4 can be easily installed, and their positions can be adjusted and observed more conveniently.

[0040] In one specific embodiment, the positioning platform 1 includes six positioning limbs 11 arranged radially relative to the positioning center. The six positioning limbs 11 are centrally symmetrical with respect to the positioning center. Three of the positioning limbs 11 are provided with inner support members 4, and the other three positioning limbs 11 are provided with outer support members 3. The inner support members 4 and the outer support members 3 are alternately arranged. The centers of the inner support members 4 and the outer support members 3 are set to be aligned with the centerline of the positioning limbs 11 to ensure that the inner support members 4 and the outer support members 3 are evenly arranged with respect to the positioning center.

[0041] Furthermore, in the embodiments of this application, such as Figures 1 to 4 As shown, the outer support 3 includes a fixing part 31 and a limiting part 32. The fixing part 31 is movably disposed on the positioning limb 11 and can move along the length direction of the positioning limb 11. One end of the fixing part 31 protrudes from the positioning limb 11, and the limiting part 32 is connected to the protruding end of the fixing part 31. In this application, the fixing part 31 is used to connect with the positioning limb 11. Preferably, the length direction of the fixing part 31 is arranged in the same direction as the length direction of the positioning limb 11, and the centerline of the fixing part 31 is aligned with the centerline of the positioning limb 11. The fixing part 31 can move along the length direction of the positioning limb 11 and drive the limiting part 32 connected to the protruding end of the fixing part 31 to move closer to or further away from the positioning limb 11. With this technical solution, the length of the fixing part protruding from the positioning limb 11 can be adjusted by adjusting the position of the fixing part 31 on the positioning limb 11, thereby adjusting the position of the limiting part 32 to ensure that the limiting part 32 abuts against the inner wall of the sleeve 6.

[0042] In the above embodiment, one end of the positioning limb 11 is connected to the positioning center, and the other end extends to the outer side of the outer wall of the pipe pile. There is a set distance between its end and the inner wall of the sleeve 6 to accommodate the movement of the limiting part 32 within the distance. This setting not only makes it convenient for the operator to adjust the position of the limiting part to ensure that the limiting part 32 can press against the inner wall of the sleeve 6 and effectively support the sleeve 6, but also makes the outer support 3 able to support sleeves 6 of different diameters, thus expanding the applicability of this device.

[0043] Furthermore, in a preferred embodiment, such as Figure 1 , Figure 7As shown, the limiting part 32 extends along the axial direction of the pile head 5; that is, the limiting part 32 has a set length along the axial direction of the pile head 5. When the limiting part 32 abuts against the inner wall of the casing 6, there is a sufficient contact area between the limiting part 32 and the inner wall of the casing 6 in the length direction, so that the limiting part 32 can form effective support for the inner wall of the casing 6. On the other hand, this setting can also be used as a basis for judging the verticality of the casing 6. Since the pile head 5 is set in the vertical direction, the length direction of the limiting part 32 is set to be the same as that of the pile head 5. The verticality and tilt direction or offset direction of the casing 6 can be judged by the contact situation between different parts of the limiting part 32 in the length direction and the inner wall of the casing 6.

[0044] In one specific embodiment, the fixing part 31 and the limiting part 32 are made of round steel tubes to form a T-shaped structure, and the fixing part 31 is vertically connected to the middle of the limiting part 32.

[0045] In the above embodiment, the fixing part 31 is fixed to the upper end face of the positioning limb 11 by at least one fastener 2. The fastener 2 includes a collar 21 with an opening and a wrench 22 disposed at the opening of the collar 21. The collar 21 is sleeved on the fixing part 31, and the wrench 22 is used to adjust the tightness of the collar 21 and lock the collar 21. Preferably, the fixing part 31 has a circular cross-section, and the shape and size of the sleeve 6 match the fixing part 31. One end of the sleeve 6 is fixed to the upper end face of the positioning limb 11. The opening position of the collar 21 can face any direction that allows the operator to adjust the wrench 22. By adjusting the wrench 22, the tightness of the collar 21 and the fixing part 31 can be adjusted, so that the position of the fixing part 31 can be adjusted by loosening the fastener 2, so that the limiting part 32 abuts against the inner wall of the sleeve 6, and the fixing part 31 is fixed to the positioning limb 11 by tightening the fastener 2. The wrench 22 also has a locking function, which can ensure the stable connection between the fixing part 31 and the positioning limb 11.

[0046] In one possible technical solution of this embodiment, such as Figure 4 As shown, the fastener 2 adopts a quick-locking clamp form, specifically including a collar 21, a pin nut 23, a washer 24, a washer 25, a rotating shaft, and a wrench 22. Locking lugs are provided on both sides of the opening of the collar 21, and through holes are provided on the locking lugs. One end of the wrench 22 is equipped with a screw, which passes through the through holes of the two locking lugs. The pin nut 23 is installed on the other end of the screw, which is connected to the wrench 22 via a rotating shaft. Washers 24 and 25 are installed between the wrench 22 and the locking lugs to reduce friction. The wrench 22 has a contact surface that matches the shape of the outer wall of the sleeve 6. Rotating the wrench 22 can drive the screw to rotate, thus tightening or loosening the collar 21. Moving the wrench 22 can rotate its contact surface to the vicinity of the outer wall of the collar 21, thus locking the collar 21.

[0047] Furthermore, in the embodiments of this application, such as Figures 5 to 6 As shown, the inner support member 4 includes a sleeve 41, a locking member 42 disposed at the opening of the sleeve 41, and a stop block 43 disposed at the opposite end of the opening. The sleeve 41 is sleeved on the limb plate with the opening facing upward, so that the stop block 43 abuts against the outer wall of the pile head 5 below the positioning platform 1.

[0048] In the above embodiment, one end of the positioning limb 11 is connected to the positioning center, and the other end extends to the outer side of the outer wall of the pipe pile. There is a set distance between its end and the outer wall of the pipe pile head 5 to accommodate the movement of the stop block 43 within the distance. This setting not only makes it convenient for the operator to adjust the position of the stop block 43 to ensure that the stop block 43 can press against the outer wall of the pipe pile head 5, so that the positioning platform 1 is firmly fixed on the pipe pile head 5; it also makes the inner support member 4 able to be used to abut against pipe pile heads 5 of different diameters, thus expanding the applicability of this device.

[0049] Specifically, in the above embodiment, the positioning limb 11 has a square cross-sectional shape, and the sleeve 41 has an inner cavity that matches the cross-section. In use, the sleeve 41 is fitted onto the positioning limb 11 from its end, with the opening of the sleeve 41 facing upwards and the stop block 43 positioned below the positioning platform 1. By adjusting the position of the sleeve 41 along the length of the positioning limb 11, the stop block 43 can be moved closer to or further away from the outer wall of the pile head 5, allowing the stop block 43 to press firmly against the outer wall of the pile head 5, forming a... The close contact between the outer wall of the pipe pile head 5 and the pipe pile head 5 enables the transfer of load to the pipe pile head 5; the locking member 42 can be fixed in the set position of the positioning limb 11 by locking the opening with the sleeve 41; preferably, the contact surface between the stop block 43 and the pipe pile head 5 has a length along the axial direction of the pipe pile head 5, so that the length direction of the stop block 43 fits against the outer wall of the pipe pile head 5, so as to ensure that the verticality of the whole device is consistent with the pipe pile head 5, so as to further control the verticality of the limiting part 32 and the sleeve 6.

[0050] In one specific embodiment, the stop 43 is designed as a triangular structure, with its end face facing the positioning center perpendicular to the lower surface of the positioning platform 1.

[0051] The positioning method of the pipe pile splicing positioning device proposed in this application, such as Figure 7 As shown, it includes the following steps:

[0052] S1. Excavate the pile head 5 of the pipe pile and level the ground around the pile head 5 of the pipe pile.

[0053] Specifically, a pile hole capable of accommodating the casing 6 is excavated around the pile head 5 of the pipe pile. The pile hole is excavated with the pile head 5 of the pipe pile as the center, and the pile head 5 of the pipe pile is exposed above the ground for a set length. This length is set according to the design connection length between the pipe pile and the splice. Then, the soil at the bottom of the pile hole is leveled so that its flatness meets the set requirements.

[0054] S2. Place the sleeve 6 outside the pile head 5 of the pipe pile, so that the sleeve 6 is aligned with the axis of the pile head 5.

[0055] Specifically, the casing 6 is hoisted into the excavated pile hole using hoisting equipment, and the casing 6 is fitted onto the outside of the pile head 5. The position of the casing 6 is adjusted so that the casing 6 is aligned with the axis of the pile head 5.

[0056] S3. Place the positioning platform 1 on the upper part of the pile head 5, so that the center of the positioning platform 1 is aligned with the center of the pile head 5.

[0057] Specifically, before placing the positioning platform 1 on the top of the pipe pile head 5, the inner support 4 is adjusted to one end of the positioning limb 11 so that the space between the inner support 4 is sufficient to surround the pipe pile head 5 inside it, and the position of the positioning platform 1 is adjusted so that the center of the positioning platform 1 is aligned with the center of the pipe pile head 5.

[0058] S4. Adjust the position of the inner support 4 so that its limiting part 32 abuts against the inner wall of the sleeve 6, and fix the inner support 4.

[0059] Specifically, after adjusting the position of the positioning platform 1 so that its center is aligned with the center of the pipe pile head 5, the inner support member 4 is moved towards the pipe pile head 5. When one end of the stop block 43 abuts against the outer wall of the pipe pile head 5, the inner support member 4 is locked and fixed by the locking member 42. The position of the inner support member 4 is adjusted one by one according to the above method until all the inner support members 4 abut against the outer wall of the pipe pile head 5, and the positioning platform 1 is firmly fixed on the pipe pile head 5.

[0060] S5. Adjust the position of the outer support 3 so that its stop 43 is pressed against the outer wall of the pile head 5 of the pipe pile, and fix the outer support 3.

[0061] Specifically, after fixing the positioning platform 1 with the inner support member 4, the wrench 22 used to fix the outer support member 3 is released, and the fixing part 31 is moved away from the center of the positioning platform 1. When the limiting part 32 abuts against the inner wall of the sleeve 6, the fixing part 31 is locked by the wrench 22. The position of the outer support member 3 is adjusted in sequence according to the above method until all the outer support members 3 abut against the inner wall of the sleeve 6, forming a stable support for the sleeve 6.

[0062] S6, the soil outside the backfill sleeve 6 is at the designed pile head elevation;

[0063] After backfilling is completed, the soil is compacted.

[0064] S7. Remove the pipe positioning mechanism and pour concrete;

[0065] Specifically, after the backfilling and compaction work is completed, the outer support 3 is loosened by wrench 22, and then the inner support 4 is loosened by adjusting the locking part 42. The positions of the outer support 3 and the inner support 4 are adjusted in sequence so that they are respectively away from the inner wall of the casing 6 and the outer wall of the pile head 5. Then the pipe positioning mechanism is removed, and the pile splicing concrete can be poured.

[0066] S8, Remove sleeve 6.

[0067] Once the splicing concrete reaches the design strength requirement, remove the sleeve 6. The sleeve 6 and the pipe positioning mechanism can then be moved to the next location where splicing construction is required.

[0068] The above-mentioned pipe pile splicing positioning method can quickly and conveniently locate the position of the casing. The overall structure is stable and easy to operate and control. It can effectively prevent the casing from shifting or tilting during the backfilling and compaction of the soil, and keep the verticality of the casing the same as that of the pipe pile head, thereby ensuring the verticality of the splicing and improving the construction quality of the splicing.

[0069] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A pipe pile splicing and positioning device, comprising a sleeve disposed on the outside of the pipe pile head, the sleeve being coaxially disposed with the pipe pile head, characterized in that: It also includes an inter-tube positioning mechanism for positioning the sleeve, the inter-tube positioning mechanism comprising: A positioning platform is used to be placed on the upper part of the pile head of the pipe pile; An external support member is movably mounted on the positioning platform and can move toward or away from the sleeve to abut against the inner wall of the sleeve. The inner support member is movably mounted on the positioning platform and can move towards or away from the pile head to abut against the outer wall of the pile head.

2. The pipe pile splicing and positioning device according to claim 1, characterized in that: The positioning platform has a positioning center, and the plurality of external support members and / or the plurality of external support members are capable of radial movement relative to the positioning center.

3. The pipe pile splicing and positioning device according to claim 2, characterized in that: The inner support and the outer support are evenly and alternately arranged on the positioning platform.

4. The pipe pile splicing and positioning device according to claim 2 or 3, characterized in that: The positioning platform includes a plurality of positioning limbs arranged radially relative to the positioning center, and the outer support and the inner support are respectively disposed on different positioning limbs.

5. The pipe pile splicing and positioning device according to claim 4, characterized in that: The external support includes a fixing part and a limiting part. The fixing part is movably disposed on the positioning limb and can move along the length direction of the positioning limb. One end of the fixing part protrudes from the positioning limb, and the limiting part is connected to the protruding end of the fixing part.

6. The pipe pile splicing and positioning device according to claim 5, characterized in that: The limiting part extends along the axial direction of the pile head.

7. The pipe pile splicing and positioning device according to claim 5 or 6, characterized in that: The fixing part is fixed to the upper end face of the positioning limb by at least one fastener. The fastener includes a collar with an opening and a wrench disposed at the opening of the collar. The collar is sleeved on the fixing part, and the wrench is used to adjust the tightness of the collar and lock the collar.

8. The pipe pile splicing and positioning device according to claim 4, characterized in that: The inner support member includes a sleeve, a locking member disposed at the opening of the sleeve, and a stop block disposed at the opposite end of the locking member. The opening of the sleeve is sleeved onto the positioning limb so that the stop block abuts against the outer wall of the pile head below the positioning platform.

9. The pipe pile splicing and positioning device according to claim 8, characterized in that: The positioning limb has a square cross-sectional shape, and the sleeve has an inner cavity that matches the cross-sectional shape.

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