CN114482032B - Combined prestressed concrete thin-wall pipe pile - Google Patents
Combined prestressed concrete thin-wall pipe pile Download PDFInfo
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- CN114482032B CN114482032B CN202111414543.4A CN202111414543A CN114482032B CN 114482032 B CN114482032 B CN 114482032B CN 202111414543 A CN202111414543 A CN 202111414543A CN 114482032 B CN114482032 B CN 114482032B
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- pipe pile
- wall pipe
- concrete thin
- screw
- groove
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 22
- 239000004567 concrete Substances 0.000 claims abstract description 77
- 230000002787 reinforcement Effects 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect 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
- 238000005516 engineering process Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
Landscapes
- 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 prestressed concrete thin-wall pipe pile which comprises a concrete thin-wall pipe pile body, a reinforcement cage and a connecting device, wherein the reinforcement cage and the connecting device are arranged in the concrete thin-wall pipe pile body, a screw device and a screw sleeve device are circumferentially arranged in the concrete thin-wall pipe pile body, the screw device is fixedly connected with the screw sleeve device and the reinforcement cage, an inner groove is formed in the screw device, a threaded rod is arranged in the inner groove, and the threaded rod is in rotary connection with the inner groove through threads. The invention has the advantages that the two concrete thin-wall pipe pile bodies can be fixed together through the screw device and the screw sleeve device, the fixing effect between the two concrete thin-wall pipe pile bodies is further improved on the basis of welding a reinforcement cage, the combined concrete thin-wall pipe pile bodies are ensured to have good anti-pulling performance, the whole device has simple structure, the manufacture of the concrete thin-wall pipe pile bodies is not influenced, and the concrete thin-wall pipe pile is convenient for workers to use.
Description
Technical Field
The invention relates to the technical field of concrete pipe piles, in particular to a combined prestressed concrete thin-wall pipe pile.
Background
The prestressed concrete pipe pile is an important basic component in the field of constructional engineering and can be divided into a post-tensioning prestressed pipe pile and a pretensioned prestressed pipe pile. The pretensioned prestressed pipe pile is one kind of slender hollow cylinder concrete prefabricated part produced with pretensioned prestressing process and centrifugal forming process and consists of cylindrical pile body, end plate, steel hoop, etc. And the post tensioning rule is to apply prestress through the reserved holes after the initial setting of the concrete in the pipe pile. The prestressed concrete pipe pile is PC pile, the prestressed high-strength concrete pipe pile is PHC pile, and the thin-wall pipe pile is PTC pile.
The pulling resistance of the prestressed concrete pipe pile can not be guaranteed by reliable technology, and the reason is: the existing prestressed concrete pipe pile body connecting method directly adopts a welded pile body end plate, the defect of the connecting method is that the end plate supplied in the market is often made of recycled steel due to the cost, brittle fracture easily occurs after the end plate is welded, meanwhile, pile pressing starts due to insufficient cooling in the construction process, the pile body connecting joint becomes a weak point as a result, a plurality of sections of pile bodies cannot be integrated effectively, the pulling resistance of the prestressed concrete pipe pile is seriously affected, and the combined device of the prestressed concrete pipe pile in the prior art is complex, special requirements on the concrete pipe pile are needed, so that the production of the concrete pipe pile is inconvenient.
Therefore, we propose a combined prestressed concrete thin-wall pipe pile to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems of poor pulling resistance and the like of a combined concrete pipe pile in the prior art, and provides a combined prestressed concrete thin-wall pipe pile.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a modular prestressed concrete thin wall tubular pile, includes the concrete thin wall tubular pile body, arranges reinforcement cage and connecting device in the concrete thin wall tubular pile body in, this internal circumference of concrete thin wall tubular pile is equipped with screw rod device and swivel nut device, screw rod device with screw rod device and reinforcement cage fixed connection, the inside groove has been seted up to the screw rod device, be equipped with the threaded rod in the inside groove, the threaded rod passes through the screw thread rotation with the inside groove and is connected, the inside groove is connected with bevel gear one through solid fixed ring rotation, offered the polygon groove on the bevel gear one, the inside groove internal rotation is connected with the polygon pole, the polygon pole runs through the polygon groove, the bar groove has been seted up to the part that the threaded rod stretches into the inside groove, bar and polygon pole phase-match, polygon pole passes through bar groove sliding connection with the threaded rod, still rotate in the inside groove and be connected with bevel gear two with the meshing of bevel gear one, the outside wall of screw rod device is equipped with the branch pipe in the inside groove, the one end fixedly connected with of keeping away from the bevel gear one rotates the groove, the groove runs through and stretches into in the branch pipe and rotates the branch pipe and is connected with the branch pipe.
Preferably, the connecting device comprises two semicircular cylinders, the two semicircular cylinders are fixedly connected through bolts, the side wall of each semicircular cylinder is fixedly connected with an annular wall, a plurality of annular walls are propped against the concrete thin-wall pipe pile body, and the cylinders formed by combining the two semicircular cylinders are matched with the concrete thin-wall pipe pile body.
Preferably, a plurality of threaded sleeves meshed with the threaded rods are circumferentially arranged on each semicircular cylinder, sealing gaskets are arranged on the opposite side walls of each semicircular cylinder, and a feeding hole is formed in one semicircular cylinder.
Preferably, a thread groove meshed with the threaded rod is formed in the threaded sleeve device, and a plurality of threaded rod devices on different concrete thin-wall tubular pile bodies are opposite to the threaded sleeve device.
Preferably, the side wall of each screw rod device and the side wall of each screw sleeve device are fixedly connected with a plurality of fixing rods, each fixing rod is provided with a fixing block, and the reinforcement cage is fixedly connected with the plurality of fixing rods through the fixing blocks.
Preferably, a plurality of reinforcement cages on the different concrete thin-wall pipe pile bodies are fixedly connected, and a plurality of thread sleeves do not prop against the reinforcement cages.
Preferably, each branch pipe is connected with a plugging block matched with the branch pipe in a clamping way, and a plurality of threaded sleeves are opposite to a plurality of threaded rods.
Preferably, a half sealing ring is arranged on the inner side wall of each half cylinder, and two half sealing rings form a sealing ring.
Compared with the prior art, the invention has the beneficial effects that:
1. the screw device and the screw sleeve device can be used for fixing the two concrete thin-wall pipe pile bodies together, the fixing effect between the two concrete thin-wall pipe pile bodies is further improved on the basis of welding of the reinforcement cage, the combined concrete thin-wall pipe pile bodies are guaranteed to have good anti-pulling performance, the whole device is simple in structure, manufacturing of the concrete thin-wall pipe pile bodies is not affected, and the combined concrete thin-wall pipe pile is convenient for workers to use;
2. when the concrete thin-wall pipe pile bodies are fixed, the concrete thin-wall pipe pile bodies can be fixed outside through the connecting device, and after the concrete thin-wall pipe pile bodies are fixed, the concrete thin-wall pipe pile bodies can be meshed with the threaded sleeve through the threaded rod and other structures, so that an integral body is formed between the two concrete thin-wall pipe pile bodies and the connecting device, the fixing effect between the two concrete thin-wall pipe pile bodies is further improved, and the pulling-resistant effect of the integral combination is improved;
3. the fixing rod and other structures are fixedly connected with the reinforcement cage, so that the concrete thin-wall pipe pile body and the threaded sleeve device are better fixed with the threaded rod device when the concrete thin-wall pipe pile body is manufactured, the integral connection is more stable, the threaded rod is opposite to the threaded sleeve, the threaded rod is meshed with the threaded sleeve conveniently, and the reinforcement cage and the fixing rod can be conveniently connected and welded by the fixing block.
Drawings
Fig. 1 is a schematic structural diagram of a combined prestressed concrete thin-wall pipe pile according to the present invention;
fig. 2 is a schematic structural view of a threaded rod, a branch pipe and other structures in a combined prestressed concrete thin-wall pipe pile according to the present invention;
fig. 3 is a schematic structural view of a structure of a screw groove, a fixing rod, etc. in a combined prestressed concrete thin-wall pipe pile according to the present invention;
fig. 4 is a schematic structural view of a concrete thin-wall pipe pile body and a connecting device in a combined prestressed concrete thin-wall pipe pile according to the present invention;
fig. 5 is a schematic structural view of a threaded sleeve, an annular wall and other structures in a combined prestressed concrete thin-wall pipe pile according to the present invention.
In the figure: the concrete thin-wall pipe pile comprises a concrete thin-wall pipe pile body, a 2 screw device, a 3 screw sleeve device, a 4 reinforcement cage, a 5 inner groove, a 6 bevel gear I, a 7 polygonal rod, an 8 threaded rod, a 9-bar groove, a 10 bevel gear II, an 11 branch pipe, a 12 rotating groove, a 13 threaded groove, a 14 fixing rod, a 15 fixing block, a 16 connecting device, a 17 semi-cylinder, 18 bolts, a 19 threaded sleeve, a 20 annular wall, a 21 semi-sealing ring, a 22 sealing gasket, a 23 sealing block and a 24 feeding hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, 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, wherein the reinforcement cage 4 and the connecting device 16 are arranged in the concrete thin-wall pipe pile body 1, a screw device 2 and a screw sleeve device 3 are circumferentially arranged in the concrete thin-wall pipe pile body 1, 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 rotationally connected with the inner groove 5 through threads, a bevel gear I6 is rotationally connected with the inner groove 5 through a fixed ring, a polygonal groove is formed in the bevel gear I6, a polygonal rod 7 is rotationally connected with the inner groove 5, a part of the threaded rod 8 extending into the inner groove 5 is provided with a strip-shaped groove 9, the strip-shaped groove 9 is matched with the polygonal rod 7, the polygonal rod 7 is slidingly connected with the threaded rod 8 through the strip-shaped groove 9, a bevel gear II 10 meshed with the bevel gear I6 is rotationally connected with the outer side wall of the screw device 2, a rotary groove 11 is fixedly connected with one end of the bevel gear II 10 far from the bevel gear I6 through the rotary groove 12, and the rotary groove 12 extends into the branch pipe 11 and is rotationally connected with the bevel gear I11;
the two concrete thin-wall pipe 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 pipe pile bodies 1 is further improved on the basis of welding of the reinforcement cage 4, the combined concrete thin-wall pipe pile bodies 1 are guaranteed to have good anti-pulling performance, the whole device is simple in structure, the manufacturing of the concrete thin-wall pipe pile bodies 1 is not affected, and the concrete thin-wall pipe pile is convenient for workers to use;
the connecting device 16 comprises two semicircular cylinders 17, the two semicircular cylinders 17 are fixedly connected through bolts 18, the side walls of the semicircular cylinders 17 are fixedly connected with annular walls 20, a plurality of annular walls 20 are propped against the concrete thin-wall pipe pile body 1, the cylinders formed by combining the two semicircular cylinders 17 are matched with the concrete thin-wall pipe pile body 1, each semicircular cylinder 17 is circumferentially provided with a plurality of threaded sleeves 19 meshed with the threaded rods 8, the opposite side walls of each semicircular cylinder 17 are provided with sealing gaskets 22, one semicircular cylinder 17 is provided with a feed port 24, the threaded sleeve device 3 is internally provided with a threaded groove 13 meshed with the threaded rods 8, a plurality of screw devices 2 and threaded sleeve devices 3 on different concrete thin-wall pipe pile bodies 1 are opposite, when the concrete thin-wall pipe pile bodies 1 are fixed, the concrete thin-wall pipe pile bodies 1 can be fixed outside through the connecting device 16, after the concrete thin-wall pipe pile bodies are fixed, the two concrete thin-wall pipe pile bodies 1 and the connecting device 16 can be meshed with the threaded sleeves 19 through the threaded rods 8 and other structures, so that an integral whole is formed between the two concrete thin-wall pipe pile bodies 1 and the connecting device 16, the integral effect of the fixing effect between the two concrete thin-wall pipe pile bodies is further improved;
the side wall of each screw rod device 2 and the side wall of each threaded 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 reinforcement cage 4 is fixedly connected with the plurality of fixing rods 14 through the fixing blocks 15, the plurality of reinforcement cages 4 on different concrete thin-wall pipe pile bodies 1 are fixedly connected, the plurality of thread sleeves 19 are not propped against the reinforcement cage 4, each branch pipe 11 is internally clamped and connected with a plugging block 23 matched with the branch pipe 11, the plurality of thread sleeves 19 are opposite to the plurality of threaded rods 8, the concrete thin-wall pipe pile bodies 1 and the threaded sleeve devices 3 can be better fixed with the screw rod devices 2 when the concrete thin-wall pipe pile bodies 1 are manufactured through the fixing rods 14 and the like, so that 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, welding between the reinforcement cage 4 and the fixing rods 14 can be facilitated by utilizing the fixing blocks 15, the inner side wall of each semicircular cylinder 17 is provided with a half sealing ring 21, the two half sealing rings 21 form sealing rings, and the connecting device 16 can be formed between the two thin-wall pipe pile bodies and the concrete thin-wall pile bodies can be conveniently poured, and the space between the two half sealing ring bodies can be conveniently formed.
According to the invention, when the concrete thin-wall pipe pile body 1 is manufactured, the screw device 2 and the screw sleeve device 3 are circumferentially welded and fixed on the steel reinforcement cage 4 through the structures such as the fixed rod 14, the fixed block 15 and the like, the blocking block 23 is blocked and plugged with the branch pipe 11, and then concrete is poured to manufacture the concrete thin-wall pipe pile body 1, so that the screw device 2 and the screw sleeve device 3 are firmly fixed together after the concrete thin-wall pipe pile body 1 is manufactured, special requirements on the concrete thin-wall pipe pile body 1 are not needed, the manufacture of the concrete thin-wall pipe pile body 1 is facilitated, when the two concrete thin-wall pipe pile bodies 1 are connected, the screw devices 2 and the screw sleeve devices 3 on different concrete thin-wall pipe pile bodies 1 are opposite, and then the steel reinforcement cages 4 on the two concrete thin-wall pipe pile bodies 1 are welded together;
after welding, the two semicircular drums 17 are clamped with the two concrete thin-wall pipe pile bodies 1, the threaded sleeves 19 are opposite to the threaded rods 8, the two semicircular drums 17 are fastened together through the bolts 18 after the clamping is finished, the sealing effect between the two semicircular drums 17 can be guaranteed through the sealing gaskets 22 on the semicircular drums 17, the sealing blocks 23 are taken out after the two semicircular drums 17 are fixed, the rotating grooves 12 are rotated through the tool, the rotating grooves 12 drive the bevel gears 10 to rotate, the bevel gears 10 drive the bevel gears 6 to rotate, the bevel gears 6 drive the polygonal rods 7 to rotate, 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 during rotation, and therefore the threaded rods 8 can move outwards in a spiral mode, the threaded rods 8 can be meshed with the threaded sleeves 19, the fixing effect of the concrete thin-wall pipe pile bodies 1 and the connecting device 16 is improved, the threaded rods 8 continue to rotate forwards in a spiral mode after penetrating through the threaded sleeves 19 until the threaded rods 8 are meshed with the threaded grooves 13, the fixing effect of the connecting device 16 and the two thin-wall pipe pile bodies 1 can be guaranteed, the fixing effect of the pipe pile bodies 1 can be better, and the pipe pile bodies 1 can be fixed between the two thin-wall pipe pile bodies can be manufactured, and the thin-wall pipe pile bodies can be fixed, and the fixing effect of the pipe pile bodies 1 can be better, and the fixing effect of the pipe pile bodies can be better can be achieved, and the fixing effect of the pipe pile bodies can be better can be fixed between the pipe pile bodies 1 and the thin-wall bodies can be fixed, and the thin-wall body can be the thin-wall pile bodies can be fixed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a modular prestressed concrete thin-wall pipe pile, includes concrete thin-wall pipe pile body (1), arranges steel reinforcement cage (4) and connecting device (16) in concrete thin-wall pipe pile body (1), its characterized in that, circumference is equipped with screw rod device (2) and swivel nut device (3) in concrete thin-wall pipe pile body (1), screw rod device (2) with swivel nut device (3) and steel reinforcement cage (4) fixed connection, interior groove (5) have been seted up in screw rod device (2), be equipped with threaded rod (8) in interior groove (5), threaded rod (8) and interior groove (5) pass through threaded rotation connection, be connected with bevel gear (6) through solid fixed ring rotation in interior groove (5), offer polygonal groove on bevel gear (6), polygonal rod (7) are connected with in interior groove (5) rotation, polygonal rod (7) run through polygonal groove, bar groove (9) have been seted up to the part that threaded rod (8) stretches into in interior groove (5), threaded rod (9) and polygonal rod (7) are connected with bevel gear (6) through threaded rod (10) rotation, bevel gear (5) are connected with two in the same bevel gear (6), the outer side wall of the screw device (2) is provided with a branch pipe (11), one end, far away from the bevel gear I (6), of the bevel gear II (10) is fixedly connected with a rotating groove (12), and the rotating groove (12) penetrates through the inner groove (5) to extend into the branch pipe (11) and is rotationally connected with the branch pipe (11);
the connecting device (16) comprises two semicircular cylinders (17), the two semicircular cylinders (17) are fixedly connected through bolts (18), the side walls of the semicircular cylinders (17) are fixedly connected with annular walls (20), a plurality of the annular walls (20) are propped against the concrete thin-wall pipe pile body (1), and a cylinder formed by combining the two semicircular cylinders (17) is matched with the concrete thin-wall pipe pile body (1);
a plurality of threaded sleeves (19) meshed with the threaded rods (8) are circumferentially arranged on each semicircular cylinder (17), sealing gaskets (22) are arranged on the opposite side walls of each semicircular cylinder (17), and a feed inlet (24) is formed in one semicircular cylinder (17);
a plurality of reinforcement cages (4) on different concrete thin-wall pipe pile bodies (1) are fixedly connected, and a plurality of thread sleeves (19) do not abut against the reinforcement cages (4);
a plurality of screw rod devices (2) on different concrete thin-wall pipe pile bodies (1) are opposite to a plurality of screw sleeve devices (3), and a plurality of screw sleeves (19) are opposite to a plurality of threaded rods (8);
the inner side wall of each semi-cylinder (17) is provided with a semi-sealing ring (21), and two semi-sealing rings (21) form a sealing ring.
2. A combined prestressed concrete thin-wall pipe pile according to claim 1, characterized in that the screw sleeve device (3) is internally provided with a thread groove (13) meshed with the threaded rod (8), and a plurality of screw devices (2) on different concrete thin-wall pipe pile bodies (1) are opposite to the screw sleeve device (3).
3. The combined prestressed concrete thin-wall pipe pile according to claim 1, wherein 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), and the reinforcement cage (4) is fixedly connected with the plurality of fixing rods (14) through the fixing blocks (15).
Priority Applications (1)
| 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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| 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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| Publication Number | Publication Date |
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| CN114482032A CN114482032A (en) | 2022-05-13 |
| CN114482032B true CN114482032B (en) | 2024-02-20 |
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| CN202111414543.4A Active CN114482032B (en) | 2021-11-25 | 2021-11-25 | Combined prestressed concrete thin-wall pipe pile |
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| 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 |
| 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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