CN114482032A - Combined prestressed concrete thin-wall pipe pile - Google Patents
Combined prestressed concrete thin-wall pipe pile Download PDFInfo
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- CN114482032A CN114482032A CN202111414543.4A CN202111414543A CN114482032A CN 114482032 A CN114482032 A CN 114482032A CN 202111414543 A CN202111414543 A CN 202111414543A CN 114482032 A CN114482032 A CN 114482032A
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 84
- 230000002787 reinforcement Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a combined type prestressed concrete thin-wall tubular pile, which comprises a concrete thin-wall tubular pile body, a reinforcement cage and a connecting device, wherein the reinforcement cage and the connecting device are arranged in the concrete thin-wall tubular pile body, a screw rod device and a screw sleeve device are circumferentially arranged in the concrete thin-wall tubular pile body, the screw rod device and the screw sleeve device are fixedly connected with the reinforcement cage, an inner groove is formed in the screw rod device, a threaded rod is arranged in the inner groove, and the threaded rod is rotatably connected with the inner groove through threads. The concrete thin-wall tubular pile has the advantages that the two concrete thin-wall tubular pile bodies can be fixed together through the screw rod device and the screw sleeve device, the fixing effect between the two concrete thin-wall tubular pile bodies is further improved on the basis of welding of the reinforcement cage, the combined concrete thin-wall tubular pile bodies are guaranteed to have good anti-pulling performance, the whole device is simple in structure, the manufacturing of the concrete thin-wall tubular pile bodies is not influenced, and the concrete thin-wall tubular pile is convenient for workers to use.
Description
Technical Field
The invention relates to the technical field of concrete tubular piles, in particular to a combined prestressed concrete thin-wall tubular pile.
Background
The prestressed concrete pipe pile is an important basic member in the field of building engineering and can be divided into post-tensioning prestressed pipe pile and pre-tensioning prestressed pipe pile. A pretensioned prestressing pipe pile is a hollow cylinder body slender concrete prefabricated component which is manufactured by adopting a pretensioned prestressing process and a centrifugal forming method and mainly comprises a cylinder-shaped pile body, an end plate, a steel ferrule and the like. And the post-tensioning method is to apply prestress through holes reserved in the pipe pile after the concrete in the pipe pile is initially set. The code of the prestressed concrete pipe pile is a PC pile, the code of the prestressed high-strength concrete pipe pile is a PHC pile, and the code of the thin-wall pipe pile is a PTC pile.
The anti-pulling performance of the prestressed concrete pipe pile can not be reliably guaranteed all the time, and the reason is as follows: the existing method for connecting the pile body of the prestressed concrete pipe pile directly adopts welding of the end plate of the pile body, and the method has the defects that the end plate supplied on the market usually adopts recycled steel due to the reason of manufacturing cost, brittle fracture easily occurs after the end plate is welded, and meanwhile, pile pressing is started when the cooling is insufficient in the construction process, so that the connection joint of the pile body becomes a weak point, a plurality of sections of the pile body cannot be effectively integrated, the pulling resistance of the prestressed concrete pipe pile is seriously influenced, and in the prior art, the combined device for the concrete pipe pile is complex, and special requirements on the concrete pipe pile are required, so that the concrete pipe pile is inconvenient to manufacture.
Therefore, a combined prestressed concrete thin-wall tubular pile is provided to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems that the combined concrete pipe pile in the prior art is poor in pulling resistance and the like, and provides a combined prestressed concrete thin-wall pipe pile.
In order to achieve the purpose, the invention adopts the following technical scheme:
a combined prestressed concrete thin-wall tubular pile comprises a concrete thin-wall tubular pile body, a reinforcement cage and a connecting device, wherein the reinforcement cage and the connecting device are arranged in the concrete thin-wall tubular pile body, a screw device and a screw sleeve device are circumferentially arranged in the concrete thin-wall tubular pile body, the screw device and the screw sleeve device are fixedly connected with the reinforcement cage, an inner groove is formed in the screw device, a threaded rod is arranged in the inner groove, the threaded rod is rotatably connected with the inner groove through threads, a first bevel gear is rotatably connected in the inner groove through a fixing ring, a polygonal groove is formed in the first bevel gear, a polygonal rod is rotatably connected in the inner groove and penetrates through the polygonal groove, a strip-shaped groove is formed in the part of the threaded rod, which extends into the inner groove, the strip-shaped groove is matched with the polygonal rod, the polygonal rod is slidably connected with the inner groove, and a second bevel gear meshed with the first bevel gear is rotatably connected in the inner groove, the outer side wall of the screw device is provided with a branch pipe, one end, far away from the bevel gear I, of the bevel gear II is fixedly connected with a rotating groove, and the rotating groove penetrates through the inner groove, extends into the branch pipe and is connected with the branch pipe in a rotating mode.
Preferably, connecting device includes two semicircles, through bolt fixed connection between two semicircles, the lateral wall fixedly connected with annular wall of semicircles, it is a plurality of the annular wall offsets with concrete thin wall tubular pile body, and the drum that two semicircles merge the formation matches with concrete thin wall tubular pile body.
Preferably, each semi-cylinder circumference is equipped with a plurality of thread bush with threaded rod meshing, every the relative lateral wall of semi-cylinder is equipped with sealed the pad, one the feed inlet has been seted up to the semi-cylinder.
Preferably, threaded grooves meshed with the threaded rods are formed in the thread sleeve devices, and the plurality of screw rod devices on different concrete thin-wall tubular pile bodies are opposite to the thread sleeve devices.
Preferably, a plurality of fixing rods are fixedly connected to the side walls of each screw device and each thread sleeve device, a fixing block is arranged on each fixing rod, and the steel reinforcement cage is fixedly connected with the fixing rods through the fixing blocks.
Preferably, fixed connection is between a plurality of steel reinforcement cages on the different concrete thin wall tubular pile body, and is a plurality of the thread bush does not offset with the steel reinforcement cage.
Preferably, a blocking block matched with the branch pipe is connected in each branch pipe in a clamping mode, and the threaded sleeves are opposite to the threaded rods.
Preferably, each semi-cylinder's inside wall is equipped with half sealing washer, two half sealing washer forms the sealing ring.
Compared with the prior art, the invention has the beneficial effects that:
1. the two concrete thin-wall tubular pile bodies can be fixed together through the screw rod device and the screw sleeve device, the fixing effect between the two concrete thin-wall tubular pile bodies is further improved on the basis of welding of the reinforcement cage, the combined concrete thin-wall tubular pile bodies are ensured to have good anti-pulling performance, the whole device is simple in structure, the manufacturing of the concrete thin-wall tubular pile bodies is not influenced, and the use of workers is facilitated;
2. when a plurality of concrete thin-wall tubular pile bodies are fixed, the concrete thin-wall tubular pile bodies can be fixed outside through the connecting device, and after the concrete thin-wall tubular pile bodies are fixed, the concrete thin-wall tubular pile bodies can be meshed with the threaded sleeves through structures such as threaded rods, so that two concrete thin-wall tubular pile bodies and the connecting device form a whole, the fixing effect between the two concrete thin-wall tubular pile bodies is further improved, and the anti-pulling effect of the combined whole is improved;
3. through the fixed rod isostructure and the steel reinforcement cage fixed connection, the concrete thin-wall tubular pile body can be better fixed with the screw sleeve device and the screw rod device when the concrete thin-wall tubular pile body is manufactured, so that the integral connection is more stable, the threaded rod is opposite to the screw sleeve, the threaded rod is convenient to be meshed with the screw sleeve, and the fixed block can be used for facilitating the connection and welding between the steel reinforcement cage and the fixed rod.
Drawings
FIG. 1 is a schematic structural view of a combined prestressed concrete thin-wall tubular pile according to the present invention;
FIG. 2 is a schematic structural view of a threaded rod and a branch pipe in a combined prestressed concrete thin-wall tubular pile according to the present invention;
fig. 3 is a schematic structural view of structures such as a thread groove and a fixing rod in a combined prestressed concrete thin-wall pipe pile provided by the invention;
fig. 4 is a schematic structural diagram of the structures of a concrete thin-wall tubular pile body, a connecting device and the like in the combined prestressed concrete thin-wall tubular pile provided by the invention;
fig. 5 is a schematic structural view of the structures of the threaded sleeve, the annular wall and the like in the combined prestressed concrete thin-wall pipe pile provided by the invention.
In the figure: the concrete thin-wall pipe pile comprises a concrete thin-wall pipe pile body 1, a screw rod device 2, a screw sleeve device 3, a steel reinforcement cage 4, an internal groove 5, a bevel gear I6, a polygonal rod 7, a threaded rod 8, a strip-shaped groove 9, a bevel gear II 10, a branch pipe 11, a rotating groove 12, a thread groove 13, a fixing rod 14, a fixing block 15, a connecting device 16, a semi-cylinder 17, a bolt 18, a thread sleeve 19, an annular wall 20, a semi-sealing ring 21, a sealing gasket 22, a sealing block 23 and a feed inlet 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a combined prestressed concrete thin-wall tubular pile comprises a concrete thin-wall tubular pile body 1, a reinforcement cage 4 and a connecting device 16, wherein the reinforcement cage 4 and the connecting device 16 are arranged in the concrete thin-wall tubular pile body 1, a screw device 2 and a screw sleeve device 3 are arranged in the concrete thin-wall tubular pile body 1 in the circumferential direction, the screw device 2 and the screw sleeve device 3 are fixedly connected with the reinforcement cage 4, an inner groove 5 is formed in the screw device 2, a threaded rod 8 is arranged in the inner groove 5, the threaded rod 8 is rotatably connected with the inner groove 5 through threads, a bevel gear 6 is rotatably connected in the inner groove 5 through a fixing ring, a polygonal groove is formed in the bevel gear 6, a polygonal rod 7 is rotatably connected in the inner groove 5, the polygonal rod 7 penetrates through the polygonal groove, a strip-shaped groove 9 is formed in a part of the threaded rod 8 extending into the inner groove 5, the strip-shaped groove 9 is matched with the polygonal rod 7, and the polygonal rod 7 is slidably connected with the threaded rod 8 through the strip-shaped groove 9, a bevel gear II 10 meshed with the bevel gear I6 is further rotatably connected in the inner groove 5, a branch pipe 11 is arranged on the outer side wall of the screw device 2, a rotating groove 12 is fixedly connected to one end, far away from the bevel gear I6, of the bevel gear II 10, and the rotating groove 12 penetrates through the inner groove 5, extends into the branch pipe 11 and is rotatably connected with the branch pipe 11;
the two concrete thin-wall tubular pile bodies 1 can be fixed together through the screw device 2 and the screw sleeve device 3, the fixing effect between the two concrete thin-wall tubular pile bodies 1 is further improved on the basis of welding the reinforcement cage 4, the combined concrete thin-wall tubular pile bodies 1 are ensured to have good anti-pulling performance, the whole device is simple in structure, the manufacturing of the concrete thin-wall tubular pile bodies 1 is not influenced, and the device is convenient for workers to use;
the connecting device 16 comprises two half cylinders 17, the two half cylinders 17 are fixedly connected through bolts 18, the side walls of the half cylinders 17 are fixedly connected with annular walls 20, the annular walls 20 are abutted against the concrete thin-wall tubular pile body 1, a cylinder formed by combining the two half cylinders 17 is matched with the concrete thin-wall tubular pile body 1, each half cylinder 17 is circumferentially provided with a plurality of thread sleeves 19 meshed with the threaded rods 8, the side wall opposite to each half cylinder 17 is provided with a sealing gasket 22, one half cylinder 17 is provided with a feeding port 24, a thread groove 13 meshed with the threaded rods 8 is formed in the thread sleeve device 3, a plurality of screw devices 2 on different concrete thin-wall tubular pile bodies 1 are opposite to the thread sleeve device 3, when the concrete thin-wall tubular pile bodies 1 are fixed, the concrete thin-wall tubular pile body 1 can be fixed outside through the connecting device 16, and after the concrete thin-wall tubular pile bodies are fixed, the threaded rod 8 and other structures can be meshed with the threaded sleeve 19, so that the two concrete thin-wall tubular pile bodies 1 and the connecting device 16 form a whole, the fixing effect between the two concrete thin-wall tubular pile bodies 1 is further improved, and the anti-pulling effect of the combined whole is improved;
the side walls of each screw device 2 and the screw sleeve device 3 are fixedly connected with a plurality of fixing rods 14, each fixing rod 14 is provided with a fixing block 15, the steel reinforcement cage 4 is fixedly connected with the fixing rods 14 through the fixing block 15, the steel reinforcement cages 4 on different concrete thin-wall tubular pile bodies 1 are fixedly connected with each other, a plurality of thread sleeves 19 are not abutted against the steel reinforcement cages 4, a plugging block 23 matched with the branch pipe 11 is connected in each branch pipe 11 in a clamping manner, the thread sleeves 19 are opposite to a plurality of threaded rods 8, the fixing rod 14 and other structures are fixedly connected with the steel reinforcement cages 4, so that the concrete thin-wall tubular pile bodies 1, the screw sleeve devices 3 and the screw devices 2 can be better fixed when the concrete thin-wall tubular pile bodies 1 are manufactured, the integral connection is more stable, the threaded rods 8 are opposite to the thread sleeves 19, the threaded rods 8 are convenient to be meshed with the thread sleeves 19, and the fixing block 15 can be convenient for the bearing welding between the steel reinforcement cages 4 and the fixing rods 14, the inner side wall of each semi-cylinder 17 is provided with a semi-seal ring 21, the two semi-seal rings 21 form a seal ring, and a seal space can be formed between the connecting device 16 and the two concrete thin-wall tubular pile bodies 1 through the seal ring formed by the two semi-seal rings 21, so that the subsequent concrete pouring is facilitated.
When the concrete thin-wall tubular pile body 1 is manufactured, the screw device 2 and the screw sleeve device 3 are circumferentially welded and fixed on the reinforcement cage 4 through structures such as the fixed rod 14 and the fixed block 15, the blocking block 23 is blocked and blocked with the branch pipe 11, then concrete is poured to manufacture the concrete thin-wall tubular pile body 1, therefore, after the concrete thin-wall tubular pile body 1 is manufactured, the screw device 2 and the screw sleeve device 3 are firmly fixed together, no special requirement on the concrete thin-wall tubular pile body 1 is needed, the manufacturing of the concrete thin-wall tubular pile body 1 is convenient, when the two concrete thin-wall tubular pile bodies 1 are connected, the screw device 2 and the screw sleeve device 3 on different concrete thin-wall tubular pile bodies 1 are opposite, and then the reinforcement cages 4 on the two concrete thin-wall tubular pile bodies 1 are welded together;
after welding, the two half cylinders 17 are clamped with the two concrete thin-wall tubular pile bodies 1, so that the thread sleeves 19 on the half cylinders 17 are opposite to the threaded rods 8, after clamping, the two half cylinders 17 are fastened together through a plurality of bolts 18, the sealing effect between the two half cylinders 17 can be ensured through the sealing gaskets 22 on the half cylinders 17, the sealing blocks 23 are taken out after the two half cylinders 17 are fixed, the rotating grooves 12 are rotated through a tool, the rotating grooves 12 drive the bevel gears two 10 to rotate, the bevel gears two 10 drive the bevel gears one 6 to rotate, the bevel gears one 6 drive the polygonal rods 7 to rotate, so that the polygonal rods 7 drive the threaded rods 8 to rotate, the threaded rods 8 can rotate relative to the threads in the inner grooves 5 when rotating, therefore, the threaded rods 8 can spirally move outwards, so that the threaded rods 8 are kept to move outwards to enable the threaded rods 8 to be meshed with the thread sleeves 19, and the fixing effect of the concrete thin-wall tubular pile bodies 1 and the connecting devices 16 is improved, threaded rod 8 runs through behind the thread bush 19 and continues spiral rotation forward, until threaded rod 8 and thread groove 13 meshing, consequently can guarantee that the fixed effect between connecting device 16 and two concrete thin-walled tubular pile bodies 1 is better, after connecting device 16 is fixed with two concrete thin-walled tubular pile bodies 1, pour into the space between two concrete thin-walled tubular pile bodies 1 with the concrete from feed inlet 24 department, with this with two concrete thin-walled tubular pile bodies 1 fixed, the fixed effectual of whole device, moreover, the steam generator is simple in structure, can not improve the cost of manufacture of concrete thin-walled tubular pile body 1, be convenient for fixed between a plurality of concrete thin-walled tubular pile bodies 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A combined prestressed concrete thin-wall pipe pile comprises a concrete thin-wall pipe pile body (1), a reinforcement cage (4) and a connecting device (16) which are arranged in the concrete thin-wall pipe pile body (1), and is characterized in that a screw device (2) and a threaded sleeve device (3) are arranged in the concrete thin-wall pipe pile body (1) in the circumferential direction, the screw device (2) and the threaded sleeve device (3) are fixedly connected with the reinforcement cage (4), an inner groove (5) is formed in the screw device (2), a threaded rod (8) is arranged in the inner groove (5), the threaded rod (8) is rotatably connected with the inner groove (5) through threads, a bevel gear I (6) is rotatably connected in the inner groove (5) through a fixing ring, a polygonal groove is formed in the bevel gear I (6), and a polygonal rod (7) is rotatably connected in the inner groove (5), polygonal rod (7) run through the polygonal groove, bar groove (9) have been seted up to the part that threaded rod (8) stretched into inside groove (5), bar groove (9) and polygonal rod (7) phase-match, polygonal rod (7) pass through bar groove (9) sliding connection with threaded rod (8), still rotate in inside groove (5) and be connected with bevel gear two (10) with bevel gear (6) meshing, the lateral wall of screw means (2) is equipped with branch pipe (11), bevel gear two (10) keep away from the one end fixedly connected with who bevel gear (6) and rotate groove (12), rotate groove (12) run through inside groove (5) and stretch into in branch pipe (11) and rotate with branch pipe (11) and be connected.
2. The combined prestressed concrete thin-wall tubular pile of claim 1, wherein the connecting device (16) comprises two half cylinders (17), the two half cylinders (17) are fixedly connected through bolts (18), the side wall of each half cylinder (17) is fixedly connected with an annular wall (20) which is a plurality of the annular wall (20) is abutted to the concrete thin-wall tubular pile body (1), and the two half cylinders (17) are combined to form a cylinder matched with the concrete thin-wall tubular pile body (1).
3. The combined prestressed concrete thin-wall tubular pile of claim 2, wherein each of the half cylinders (17) is circumferentially provided with a plurality of thread sleeves (19) engaged with the threaded rods (8), each of the opposite side walls of the half cylinders (17) is provided with a sealing gasket (22), and one of the half cylinders (17) is provided with a feeding hole (24).
4. A combined prestressed concrete thin-walled tubular pile according to claim 1, characterized in that the screw sleeve device (3) has a threaded groove (13) engaged with the threaded rod (8), and the plurality of screw rod devices (2) on different concrete thin-walled tubular pile bodies (1) are opposite to the screw sleeve device (3).
5. The combined prestressed concrete thin-wall tubular pile as claimed in claim 1, wherein a plurality of fixing rods (14) are fixedly connected to the side wall of each of the screw device (2) and the screw sleeve device (3), a fixing block (15) is arranged on each fixing rod (14), and the reinforcement cage (4) is fixedly connected with the plurality of fixing rods (14) through the fixing blocks (15).
6. A combined prestressed concrete thin-wall pipe pile according to claim 3, characterized in that a plurality of reinforcement cages (4) on different concrete thin-wall pipe pile bodies (1) are fixedly connected, and a plurality of said thread bushings (19) do not abut against the reinforcement cages (4).
7. A combined prestressed concrete thin-walled tubular pile according to claim 1, characterized in that a plurality of screw means (2) on different concrete thin-walled tubular pile bodies (1) are opposite to a plurality of screw sleeve means (3), and a plurality of said screw sleeves (19) are opposite to a plurality of threaded rods (8).
8. A combined prestressed concrete thin-wall pipe pile according to claim 3, characterized in that the inner side wall of each half cylinder (17) is provided with a half sealing ring (21), and two half sealing rings (21) form a sealing ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414543.4A CN114482032B (en) | 2021-11-25 | 2021-11-25 | Combined prestressed concrete thin-wall pipe pile |
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| CN202111414543.4A CN114482032B (en) | 2021-11-25 | 2021-11-25 | Combined prestressed concrete thin-wall pipe pile |
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| CN114482032A true CN114482032A (en) | 2022-05-13 |
| CN114482032B CN114482032B (en) | 2024-02-20 |
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| CN109183782A (en) * | 2018-09-10 | 2019-01-11 | 福建宝丰管桩有限公司 | The anti-splitting prefabricated concrete pipe pile of one kind and production method |
| CN210887193U (en) * | 2019-08-08 | 2020-06-30 | 汤始建华建材（上海）有限公司 | High-strength concrete pipe pile |
| CN110835910A (en) * | 2019-10-09 | 2020-02-25 | 福建宝丰管桩有限公司 | Precast pile and rapid manufacturing method |
| CN212104036U (en) * | 2020-02-21 | 2020-12-08 | 杜新明 | Height-adjustable building pile |
| CN212405130U (en) * | 2020-06-01 | 2021-01-26 | 六安市永固管桩建材有限公司 | Prestressed concrete pipe pile with steel core |
| CN212772325U (en) * | 2020-06-24 | 2021-03-23 | 嵊州华鼎管桩有限公司 | Stabilizing assembly for prestressed concrete pipe pile |
| CN212772318U (en) * | 2020-08-11 | 2021-03-23 | 江西中泰来混凝土管桩有限公司 | Concrete pipe pile quick joint |
| CN214219641U (en) * | 2020-10-15 | 2021-09-17 | 江苏硕泰建筑科技有限公司 | Concrete pipe pile extension device |
| CN214089829U (en) * | 2020-10-21 | 2021-08-31 | 刘雪婷 | Building pile for building |
| CN213926241U (en) * | 2020-12-04 | 2021-08-10 | 中煤江南建设发展集团有限公司 | Portable tubular pile connector |
| CN214530619U (en) * | 2020-12-25 | 2021-10-29 | 浙江雄宇混凝土构件有限公司 | Prestressed concrete tubular pile connecting device |
| CN113089733A (en) * | 2021-04-28 | 2021-07-09 | 东北农业大学 | Anti frozen swelling destroys elastic pile basis |
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