Prefabricated PHC pipe pile suitable for island construction

Abstract

The utility model discloses a prefabricated PHC tubular pile suitable for island construction, and relates to the technical field of PHC tubular piles, the prefabricated PHC tubular pile comprises a plurality of groups of foundation piles which are integrally assembled, pile tips are mounted at the bottom ends of pile bodies of the foundation piles, and pile heads are mounted at the top ends of the pile bodies of the foundation piles; welding steel belts for wrapping tool bolts are arranged at the butt joint ends of the upper and lower adjacent groups of foundation piles, the foundation piles and the pile tips as well as the foundation piles and the pile heads. According to the PHC pipe pile, the foundation pile, the pile tip and the pile head are combined and arranged to be in a mutual butt-joint assembly mode, and under integral assembly of the tool bolts, on one hand, the PHC pipe pile has flexible field assembly use performance and better field assembly adaptability, on the other hand, the PHC pipe pile has firm integral assembly performance, and a stable integral pipe pile structure can be formed; and when the piles are sequentially assembled and piled, the sheaths at the assembling ends of the piles are welded by using the welding steel belts, so that a tight seam-closing wrapping effect can be formed on the exposed assembling ends of the piles, and the corrosion influence of external soil and seawater is avoided.

Description

Technical Field

[0001] The utility model relates to the field of PHC pipe piles, in particular to a precast PHC pipe pile suitable for island construction. Background Technique

[0002] PHC pipe piles have various functions in construction projects, mainly including improving the bearing capacity of buildings, shortening the construction period, reducing the impact on the surrounding environment, and adapting to various geological conditions. Especially for coastal construction facilities such as ports and islands, PHC pipe piles can play an important role in deep support. They are essential building bases in various coastal construction facilities. As shown in a PHC pipe pile for ports (publication number CN221760667U) disclosed on the Chinese Patent Network, for this type of PHC pipe pile, when the upper and lower adjacent pipe piles are integrally installed, through the combination of magnetic blocks, limit rods, protective shells, mounting plates, first springs, mounting bolts, and sliders, the sliders are spliced with the docking grooves on the mounting blocks, and under the elastic force of the springs, the clamping plates limit the up and down positions of the protective shells, and then the protective shells are finally fixed with mounting bolts, reducing the corrosion rate of the installation part of the device by soil and seawater and improving the service life of the device.

[0003] However, for the PHC pipe piles in the above-mentioned public patents and the existing market, there are still some deficiencies: The existing method uses the elastic force of springs as the driving component to push the buckle component to lock, so that the protective shell fixes the upper and lower pipe piles, and uses mounting bolts to further strengthen the fixation of the protective shell. Its fixed connection stability is poor, and the overall sealing performance of the protective shell is insufficient. It is extremely easy to squeeze soil and seawater into the interior of the shell under pressure, corrode its internal connection components, resulting in loosening or even falling off of the connection between the upper and lower pipe piles, and the long-term safety and usability are insufficient. Therefore, technical personnel in this field have provided a precast PHC pipe pile suitable for island construction to solve the problems raised in the above background technique. Summary of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a precast PHC pipe pile suitable for island construction, which solves the problem that the connection stability of the upper and lower pipe piles of the existing PHC pipe piles for coastal construction is poor as mentioned in the above background technique.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A precast PHC pipe pile suitable for island construction includes multiple groups of base piles assembled integrally;

[0006] A pile tip is installed at the bottom end of the pile body of the base pile, and a pile head is installed at the top end of the pile body of the base pile;

[0007] The two upper and lower adjacent groups of foundation piles, the foundation piles and the pile tips, and the foundation piles and the pile heads are fastened by multiple groups of tooling bolts arranged along their circumferences;

[0008] The two upper and lower adjacent groups of foundation piles, the matching ends of the foundation piles and the pile tips, and the matching ends of the foundation piles and the pile heads are all provided with welded steel strips wrapped with tooling bolts.

[0009] As a further technical solution of the present invention: the foundation pile includes a pile body, a first steel sleeve is provided at the bottom of the pile body, a plurality of groups of first docking blocks are arranged along the circumference of the bottom sleeve of the first steel sleeve, and a first matching hole is provided on the block surface of each group of first docking blocks, a first steel seat is provided on the top of the pile body, a plurality of groups of first docking slots are arranged along the circumference of the upper support of the first steel seat, and a first positioning hole is provided on the slot surface of each group of first docking slots.

[0010] As a further technical solution of the present invention: the first docking card block and the first docking card slot are matched with each other one by one, and after the first docking card block and the first docking card slot are matched, the first matching holes and the first positioning holes thereof are overlapped and aligned with each other.

[0011] As a further technical solution of the present invention: the pile tip includes a second steel seat, the bottom of the support of the second steel seat is provided with multiple groups of conical teeth arranged along its circumference, and the upper end of the support of the second steel seat is provided with multiple groups of second docking grooves that are compatible with the bottom of the foundation pile, and the groove surface of each group of the second docking grooves is provided with a second positioning hole.

[0012] As a further technical solution of the present invention: the pile head includes a second steel sleeve, the upper sleeve of the second steel sleeve is provided with multiple groups of external holes arranged along its circumference, and the bottom sleeve of the second steel sleeve is provided with multiple groups of second docking blocks adapted to the top of the foundation pile, and each group of the second docking blocks has a second matching hole on its block surface.

[0013] As a further technical solution of the present invention, the mating ends of the two upper and lower adjacent groups of foundation piles, the foundation piles and the pile tips, and the foundation piles and the pile heads are all provided with paving grooves adapted to the welded steel strips.

[0014] The utility model provides a prefabricated PHC pipe pile suitable for island construction, which has the following advantages compared with the existing technology:

[0015] The PHC pipe pile of this design has the combination of the base pile, pile tip, and pile head set in a form of mutual alignment and assembly. With the integrated assembly of the tooling bolts, on the one hand, it has flexible on-site assembly and use performance, and better on-site assembly adaptability. On the other hand, it has firm integrated assembly performance, can form a stable integrated pipe pile structure, and while successively assembling and driving the piles, by using a welding steel strip to wrap and weld the assembly end, it can form a tightly fitting and seamless wrapping effect on the exposed assembly end, avoiding the corrosion effects of the external soil and seawater. Its integrated assembly is more firm while the safe use is more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a precast PHC pipe pile applicable to island construction;

[0017] Figure 2 It is a first unfolded schematic diagram of a precast PHC pipe pile applicable to island construction;

[0018] Figure 3 It is a second unfolded schematic diagram of a precast PHC pipe pile applicable to island construction;

[0019] Figure 4 It is a schematic structural diagram of the base pile in a precast PHC pipe pile applicable to island construction;

[0020] Figure 5 It is a schematic structural diagram of the pile tip in a precast PHC pipe pile applicable to island construction;

[0021] Figure 6 It is a schematic structural diagram of the pile head in a precast PHC pipe pile applicable to island construction.

[0022] In the figure: 1. Base pile; 11. Pile body; 12. First steel sleeve; 13. First docking block; 14. First alignment hole; 15. First steel seat; 16. First docking slot; 17. First positioning hole; 2. Pile tip; 21. Second steel seat; 22. Conical teeth; 23. Second docking slot; 24. Second positioning hole; 3. Pile head; 31. Second steel sleeve; 32. External discharge holes; 33. Second docking block; 34. Second alignment hole; 4. Welding steel strip; 5. Tooling bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-6 , the utility model provides a technical solution of a precast PHC pipe pile applicable to island construction: a precast PHC pipe pile applicable to island construction, including multiple groups of base piles 1 assembled integrally. The base pile 1 includes a pile body 11. A first steel sleeve 12 is arranged at the bottom of the pile body 11. Multiple groups of first docking blocks 13 are arranged along the circumferential direction of the bottom socket of the first steel sleeve 12. And a first mating hole 14 is opened on the block surface of each group of first docking blocks 13. A first steel seat 15 is arranged at the top of the pile body 11. Multiple groups of first docking slots 16 are opened along the circumferential direction of the upper support of the first steel seat 15. And a first positioning hole 17 is opened on the slot surface of each group of first docking slots 16. The first docking blocks 13 and the first docking slots 16 are mated one by one. And after mating, for the first docking blocks 13 and the first docking slots 16, the first mating holes 14 and the first positioning holes 17 coincide and align with each other. When driving the base piles 1 in sequence, when the base pile 1 is driven to a height of about one meter from the ground, align the next group of base piles 1 with the current base pile 1. Utilize the mating of the lower first steel sleeve 12 and the upper first steel seat 15, and under the mating of the first docking blocks 13 and the first docking slots 16, mate and assemble the upper and lower opposite base piles 1. Then use the tooling bolts 5 to tighten the bolts of the first mating holes 14 and the first positioning holes 17, and integrally fix and install the upper and lower opposite base piles 1. Then, in this way, carry out continuous integral assembly and deep driving operations on the base piles 1.

[0025] A pile tip 2 is installed at the bottom end of the pile body of the base pile 1. The pile tip 2 includes a second steel seat 21. Multiple groups of conical teeth 22 are arranged along the circumferential direction of the bottom of the support of the second steel seat 21. And multiple groups of second docking slots 23 adapted to the bottom of the base pile 1 are arranged at the upper end of the support of the second steel seat 21. A second positioning hole 24 is opened on the slot surface of each group of second docking slots 23. By utilizing the mating of the second steel seat 21 on the pile tip 2 and the first steel sleeve 12 at the bottom of the base pile 1, and under the mating of the second docking slots 23 and the first docking blocks 13, assemble the pile tip 2 with any group of base piles 1. Then, under the tightening of the tooling bolts 5 on the bolts of the first mating holes 14 and the second positioning holes 24, use the combination of the base pile 1 and the pile tip 2 as the first group of pipe piles. Utilize the soil-breaking effect of the conical teeth 22 on the pile tip 2 to drive the pipe pile deeply and break the soil quickly.

[0026] A pile head 3 is installed at the top of the pile body of the foundation pile 1. The pile head 3 includes a second steel sleeve 31. The upper sleeve of the second steel sleeve 31 is provided with multiple groups of external holes 32 arranged along its circumference, and the bottom sleeve of the second steel sleeve 31 is provided with multiple groups of second docking blocks 33 that are compatible with the top of the foundation pile 1. The block surface of each group of second docking blocks 33 is provided with second matching holes 34. After the foundation pile 1 is installed, the pile head 3 is assembled with the uppermost foundation pile 1 by utilizing the alignment of the second steel sleeve 31 on the pile head 3 with the first steel seat 15 at the top of the foundation pile 1, and under the alignment of the second docking block 33 with the first docking groove 16. Then, when the tool bolts 5 are tightened to the first positioning holes 17 and the second matching holes 34, the combination of the foundation pile 1 and the pile head 3 is used as a pipe pile head to be connected to subsequent building support components.

[0027] The two upper and lower adjacent groups of foundation piles 1, the foundation piles 1 and the pile tips 2, and the foundation piles 1 and the pile heads 3 are fastened by multiple groups of tooling bolts 5 arranged along their circumferences, and the two upper and lower adjacent groups of foundation piles 1, the foundation piles 1 and the pile tips 2, and the foundation piles 1 and the pile heads 3 are provided with welded steel strips 4 that wrap the tooling bolts 5 at their mating ends. The two upper and lower adjacent groups of foundation piles 1, the foundation piles 1 and the pile tips 2, and the foundation piles 1 and the pile heads 3 are provided with recessed grooves that match the welded steel strips 4. By using the welded steel strips 4 to wrap the mating ends of the pipe piles, their assembly nodes can be sealed to form a tight protective belt to isolate the assembly nodes from corrosion by external soil and seawater. On the one hand, it helps to improve the integrity of the connection, and on the other hand, it can improve the safety and durability of the pipe piles.

[0028] The working principle of the utility model is as follows: when constructing PHC pipe piles for island buildings, first, the second steel seat 21 on the pile tip 2 is matched with the first steel sleeve 12 at the bottom of the foundation pile 1 to assemble the pile tip 2 with any group of foundation piles 1, and then, when the tool bolts 5 are fastened to the first matching holes 14 and the second positioning holes 24, the combination of the foundation pile 1 and the pile tip 2 is used as the first group of pipe piles, and the pipe piles are driven deep into the ground by the ground-breaking effect of the conical teeth 22 on the pile tip 2, so that the piles are quickly driven into the ground;

[0029] When the first group of foundation piles 1 is driven to a height of about one meter from the ground, the foundation piles 1 of the next group are aligned with the current foundation piles 1. By using the first steel sleeve 12 at the lower end and the first steel seat 15 at the upper end, and by tightening the tool bolts 5 in the first matching holes 14 and the first positioning holes 17, the upper and lower foundation piles 1 are fixed and installed as a whole. Then, in this way, the foundation piles 1 are continuously assembled as a whole and the piling process is carried out.

[0030] After the driving of the last group of foundation piles 1 is completed, the second steel sleeve 31 on the pile head 3 is aligned with the first steel seat 15 at the top of the foundation pile 1, and under the bolt fastening of the tooling bolts 5 to the first positioning hole 17 and the second alignment hole 34, the combination of the foundation pile 1 and the pile head 3 is used as the pipe pile head to be connected to the subsequent building support components as the connection end;

[0031] And after the combinations of the foundation pile 1, the pile tip 2, and the pile head 3 are successively bolted and tightened, it is necessary to synchronously wrap and weld the steel belt 4 at their mating ends. By using the steel belt 4 to wrap and weld the mating ends of the pipe piles, the assembly joints are sealed and wrapped to form a tightly jointed protective belt, isolating the corrosion of the external soil and seawater on the assembly joints, maximizing the anti-corrosion protection of the assembly joint components, and improving the safe service performance of the overall structure of the pipe piles.

[0032] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model are implemented according to the conventional means in this field without special instructions and limitations.

Claims

1. A precast PHC pipe pile applicable to island construction, characterized in that, Including multiple groups of foundation piles (1) assembled integrally; A pile tip (2) is installed at the bottom end of the pile body of the foundation pile (1), and a pile head (3) is installed at the top end of the pile body of the foundation pile (1); Between two adjacent upper and lower groups of the foundation piles (1), between the foundation pile (1) and the pile tip (2), and between the foundation pile (1) and the pile head (3), they are all bolted tightly by multiple groups of tooling bolts (5) arranged along their circumferences; At the mating ends between two adjacent upper and lower groups of the foundation piles (1), between the foundation pile (1) and the pile tip (2), and between the foundation pile (1) and the pile head (3), there are welding steel strips (4) covering the tooling bolts (5).

2. The precast PHC pipe pile applicable to island construction according to claim 1, wherein The foundation pile (1) includes a pile body (11), a first steel sleeve (12) is arranged at the bottom of the pile body (11), multiple groups of first docking blocks (13) are arranged along the circumference of the bottom socket of the first steel sleeve (12), and a first mating hole (14) is opened on the surface of each group of first docking blocks (13). A first steel seat (15) is arranged at the top of the pile body (11), multiple groups of first docking slots (16) are opened along the circumference of the upper support of the first steel seat (15), and a first positioning hole (17) is opened on the surface of each group of first docking slots (16).

3. The precast PHC pipe pile applicable to island construction according to claim 2, wherein The first docking blocks (13) and the first docking slots (16) are mated with each other one by one. After mating, for the first docking blocks (13) and the first docking slots (16), the first mating holes (14) and the first positioning holes (17) coincide and align with each other.

4. A precast PHC pipe pile applicable to island construction according to claim 1, characterized in that, The pile tip (2) includes a second steel seat (21), multiple groups of conical teeth (22) are arranged along the circumference of the bottom of the support of the second steel seat (21), and multiple groups of second docking slots (23) adapted to the bottom of the foundation pile (1) are opened at the upper end of the support of the second steel seat (21). A second positioning hole (24) is opened on the surface of each group of second docking slots (23).

5. The precast PHC pipe pile applicable to island construction according to claim 1, characterized in that, The pile head (3) includes a second steel sleeve (31), multiple groups of external connection holes (32) are opened along the circumference of the upper socket of the second steel sleeve (31), and multiple groups of second docking blocks (33) adapted to the top of the foundation pile (1) are arranged at the bottom socket of the second steel sleeve (31). A second mating hole (34) is opened on the surface of each group of second docking blocks (33).

6. The precast PHC pipe pile applicable to island construction according to claim 1, wherein, At the mating ends between two adjacent upper and lower groups of the foundation piles (1), between the foundation pile (1) and the pile tip (2), and between the foundation pile (1) and the pile head (3), there are relief grooves adapted to the welding steel strip (4).

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