CN112112156A - Tubular pile connecting device and connecting method - Google Patents
Tubular pile connecting device and connecting method Download PDFInfo
- Publication number
- CN112112156A CN112112156A CN202010922197.XA CN202010922197A CN112112156A CN 112112156 A CN112112156 A CN 112112156A CN 202010922197 A CN202010922197 A CN 202010922197A CN 112112156 A CN112112156 A CN 112112156A
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- tubular pile
- end plate
- tubular
- pile end
- sleeve
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010862 gear shaping Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- 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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- 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 tubular pile connecting device and a connecting method, the tubular pile connecting device comprises a first tubular pile and a second tubular pile, and also comprises a first tubular pile end plate, a second tubular pile end plate and a connecting piece, wherein the first tubular pile end plate is provided with a nut, the second tubular pile end plate is provided with a sleeve, the sleeve is provided with a first occluding tooth, the connecting piece is provided with a threaded connector and an inserted bar, the inserted bar is provided with a second occluding tooth, the threaded connector is connected with the nut, the inserted bar is connected with the sleeve, the first occluding tooth and the second occluding tooth are occluded with each other, the tubular pile connecting method is characterized in that the threaded connector of the connecting piece is screwed into the nut of the first tubular pile end plate, the inserted bar is inserted into the sleeve of the second tubular pile end, the first occluding tooth and the second occluding tooth are occluded with each other, so that the first tubular pile end plate is butted with the second tubular pile end plate, the tubular pile connected by the connecting device has, the tubular pile mounting device is high in tubular pile mounting efficiency and is used in the field of tubular piles.
Description
Technical Field
The invention is used in the field of tubular piles, and particularly relates to a tubular pile connecting device and a tubular pile connecting method.
Background
At present, various projects such as large basements, high-rise buildings, chemical plants, offshore wharf platforms, large suspension bridges and cable-stayed bridges are increased day by day, the using amount of the precast tubular piles is increased continuously, the requirement on the length of the tubular piles is increased more and more, the higher requirement on the joint performance of the precast tubular piles in pile foundations is provided, and the problems that the pile splicing quality is difficult to guarantee, the pile splicing efficiency is low and the like exist in the conventional precast tubular piles.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides a tubular pile connecting device and a tubular pile connecting method, which can improve pile splicing efficiency and pile splicing quality.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a tubular pile connecting device, includes first tubular pile and second tubular pile, still includes:
the first tubular pile end plate is connected with the end face of the first tubular pile, and a nut is arranged on the first tubular pile end plate;
the second tubular pile end plate is connected with the end face of the second tubular pile, a sleeve is arranged on the second tubular pile end plate, and first meshing teeth are arranged on the sleeve;
the connecting piece, the connecting piece has threaded connection head and inserted bar, threaded connection head with the inserted bar is connected, be equipped with second interlock tooth on the inserted bar, the connecting piece passes through threaded connection head with on the first tubular pile end plate the nut is connected, the connecting piece passes through the inserted bar with on the second tubular pile end plate the sleeve cooperation is connected, first interlock tooth with the mutual interlock of second interlock tooth.
The technical scheme at least has the following advantages or beneficial effects: in the connection process, the threaded connector of the connecting piece is connected with the nut on the first tubular pile end plate, the inserted bar is inserted into the sleeve on the second tubular pile end plate, so that the first occlusion tooth is occluded and connected with the second occlusion tooth, the first tubular pile and the second tubular pile are connected, the tubular pile connected by the connecting device has better anti-pulling performance, the connection quality of the tubular pile connector is higher, and the pile connecting efficiency of the tubular pile is higher.
Further as an improvement of the technical scheme of the invention, the inserted bar comprises a plurality of inserted teeth, and the inserted teeth are annularly arranged at intervals.
Further as an improvement of the technical scheme of the invention, the end parts of the gear shaping teeth are bent inwards, so that the pipe pile can be centered quickly during connection.
As a further improvement of the technical scheme of the invention, a first through hole is formed in the middle of the first tubular pile end plate, and the nut is aligned with the first through hole and is installed on one side of the first tubular pile end plate.
As a further improvement of the technical scheme of the invention, a second through hole is formed in the middle of the second tubular pile end plate, and the sleeve is aligned with the second through hole and mounted on one side of the second tubular pile end plate.
As a further improvement of the technical scheme of the invention, a plurality of slots are arranged on the sleeve at intervals in the circumferential direction, and the first engaging teeth are arranged in each slot.
As a further improvement of the technical scheme of the invention, a notch is formed in the middle of each gear shaping, each notch corresponds to each slot one by one, and the second engaging teeth are arranged on the slot edges of the notches.
A tubular pile connecting method comprises the following steps:
prefabricating a first tubular pile and a second tubular pile;
installing a first tubular pile end plate at the end face of a first tubular pile, and installing a second tubular pile end plate at the end face of a second tubular pile;
the threaded connector of the connecting piece is screwed into the nut of the first tubular pile end plate, after the first tubular pile and the second tubular pile are preliminarily positioned and butted, the inserted bar is inserted into the sleeve of the second tubular pile end, the first occlusion tooth and the second occlusion tooth are occluded with each other, so that the first tubular pile end plate is butted with the second tubular pile end plate, and the first tubular pile is butted with the second tubular pile.
Further as an improvement of the technical scheme of the invention, the butt joint of the first tubular pile end plate and the second tubular pile end plate is subjected to closed welding.
Further as an improvement of the technical scheme of the invention, when the first tubular pile is prefabricated, the first tubular pile end plate and the first tubular pile are formed into a pile together, and when the second tubular pile is prefabricated, the second tubular pile end plate and the second tubular pile are formed into a pile together.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is a schematic view of the embodiment of FIG. 1 in a disengaged state;
fig. 3 is a schematic view of the connection state of the first tubular pile end plate and the first tubular pile in the embodiment shown in fig. 1;
fig. 4 is a schematic view of the connection state of a second tubular pile end plate and a second tubular pile in the embodiment shown in fig. 1;
FIG. 5 is a schematic view of the construction of the connector in the embodiment of FIG. 1;
fig. 6 is a top view of a first tube pile end plate in the illustrated embodiment of the invention;
fig. 7 is a side cross-sectional view of a first tube pile end plate in the illustrated embodiment of the invention;
fig. 8 is a bottom view of a second tube pile end plate in the illustrated embodiment of the invention;
fig. 9 is a side cross-sectional view of a second tube pile end plate in the illustrated embodiment of the invention;
FIG. 10 is a schematic view of a rod construction according to an embodiment of the present invention;
FIG. 11 is a side view of the embodiment shown in FIG. 10;
fig. 12 is a sectional view taken along line a-a in the embodiment shown in fig. 10.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
Referring to fig. 1 to 12, an embodiment of the present invention provides a tubular pile connecting device, including a first tubular pile 1, a second tubular pile 2, a first tubular pile end plate 10, a second tubular pile end plate 20 and a connecting member 3, wherein first tubular pile end plate 10 is connected with the terminal surface of first tubular pile 1, be equipped with nut 11 on the first tubular pile end plate 10, second tubular pile end plate 20 is connected with the terminal surface of second tubular pile 2, be equipped with sleeve 21 on the second tubular pile end plate 20, be equipped with first interlock tooth 210 on the sleeve 21, connecting piece 3 has threaded connection head 30 and inserted bar, threaded connection head 30 and inserted bar interconnect, be equipped with second interlock tooth 310 on the inserted bar, connecting piece 3 is connected with nut 11 on the first tubular pile end plate 10 through threaded connection head 30, connecting piece 3 is connected through the cooperation of inserted bar and the sleeve 21 on the second tubular pile end plate 20, so that first interlock tooth 210 and the interlock of second interlock tooth 310 interlock each other.
In the connection process, the threaded connector 30 of the connecting piece 3 is screwed into the nut 11 on the first tubular pile end plate 10, the inserted bar is inserted into the sleeve 21 on the second tubular pile end plate 20, so that the first occlusion tooth 210 and the second occlusion tooth 310 are occluded and connected, and the first tubular pile 1 and the second tubular pile 2 are connected.
Referring to fig. 5, 7 and 9, in some embodiments, a first through hole 100 is formed in the middle of the first tubular pile end plate 10, a nut 11 is installed on one side of the first tubular pile end plate 10 in alignment with the first through hole 100, specifically, the nut 11 is vertically welded on the edge of the first through hole 100, the nut 11 can extend into the first tubular pile 1, and one side of the first tubular pile end plate 10 is in fit connection with the end face of the first tubular pile 1; a second through hole 200 is formed in the middle of the second tubular pile end plate 20, the sleeve 21 and the second through hole 200 are arranged on one side of the second tubular pile end plate 20 in an aligned mode, specifically, the sleeve 21 is vertically welded on the edge of the second through hole 200, the sleeve 21 can extend into the second tubular pile 2, and one side of the second tubular pile end plate 20 is connected with the end face of the second tubular pile 2 in an attached mode; connecting piece 3 is hollow structure, and during the connection, the threaded connection head 30 of connecting piece 3 passes first through-hole 100 and is connected with nut 11, and the inserted bar of connecting piece 3 passes second through-hole 200 and inserts inside sleeve 21 for first interlock tooth 210 is connected with the interlock of second interlock tooth 310, makes connecting piece 3 hide inside like this, makes first tubular pile end plate 10 closely laminate with second tubular pile end plate 20 and is connected.
Referring to fig. 5 and 7, it should be noted that the threaded connector 30 and the inserted link are connected into a whole through a hexagon nut 32, the threaded connector 30 is connected to the upper side of the hexagon nut 32, the inserted link is connected to the lower side of the hexagon nut 32, the threaded connector 30 is in an external thread structure, and the nut 11 on the first tubular pile end plate 10 is in an internal thread structure.
Referring to fig. 5, in some embodiments, the rod includes a plurality of teeth 31, each tooth 31 is circumferentially spaced, specifically, each tooth 31 is circumferentially disposed on the lower side of the hexagon nut 32, and each tooth 31 is spaced from each other, so that each tooth 31 has elasticity, during the connection process, the first engaging tooth 210 and the second engaging tooth 310 are pressed against each other, the pressure applied to the second engaging tooth 310 is transmitted to the tooth 31, so that the tooth 31 is expanded and deformed to both sides, and after the connection is completed, the tooth 31 is restored to its original shape, so that the tooth 31 is more easily inserted into the sleeve 21.
Referring to fig. 5, in some embodiments, the ends of the gear teeth 31 are bent inward to form relief ramps that guide the gear teeth 31 as the gear teeth 31 are assembled into the sleeve 21, further facilitating insertion of the gear teeth 31 into the sleeve 21.
Referring to fig. 8 to 12, in some embodiments, the sleeve 21 is provided with a plurality of slots 220, each slot 220 is arranged on the sleeve 21 at intervals, the first engaging teeth 210 are arranged in the slots 220, specifically, the first engaging teeth 210 are arranged on a rod 4, the first engaging teeth 210 are arranged on one side of the rod 4, so that one half of the rod 4 is provided with the first engaging teeth 210, the other half of the rod 4 is not provided with the first engaging teeth 210, the rod 4 is inserted into the slots 220, so that one side of the rod 4 provided with the first engaging teeth 210 is positioned inside the sleeve 21, and one side of the rod 4 not provided with the first engaging teeth 210 is positioned outside the sleeve 21 and welded on the outer wall of the sleeve 21.
Referring to fig. 5, in some embodiments, a notch 320 is formed in a middle portion of each gear shaping 31, each notch 320 corresponds to a distribution position of each slot 220, the second engaging teeth 310 are disposed at groove edges of the notch 320, and specifically, the second engaging teeth 310 are disposed at groove edges at both sides of the notch 320.
The first engaging teeth 210 and the second engaging teeth 310 are both of a sawtooth structure, the tooth mouth direction of the second engaging teeth 310 is upward, the tooth mouth direction of the first engaging teeth 210 is downward, and the first engaging teeth 210 and the second engaging teeth 310 are engaged with each other step by step in the process of inserting the inserted bar into the slot 220.
A tubular pile connecting method comprises the following steps: install first tubular pile end plate 10 in the terminal surface department of first tubular pile 1, the terminal surface department at second tubular pile 2 is installed to second tubular pile end plate 20, screw in the threaded connection head 30 of connecting piece 3 inside the nut 11 of first tubular pile end plate 10 through rotatory hexagon nut 32, send second tubular pile 2 to the soil layer through the mode of hammering or static pressure, when the pile bolck of second tubular pile 2 leaves ground 0.5 meters ~ 1 meters, hoist first tubular pile 1, make the tip of inserted bar and the sleeve 21 on second tubular pile end plate 20 carry out the centering, utilize the dead weight or pile pressing of first tubular pile 1, impact force during the pile driving makes the inserted bar insert in the sleeve 21 of second tubular pile end plate 10 completely, so that first tubular pile end plate 10 docks smoothly with second tubular pile end plate 20.
In some embodiments, after the connecting member 3 connects the first tubular pile end plate 10 and the second tubular pile end plate 20, the periphery of the butt joint of the first tubular pile end plate 10 and the second tubular pile end plate 20 is welded in a closed manner, so that the connection is enhanced, and meanwhile, a certain corrosion protection effect can be generated at the joint of the first tubular pile 1 and the second tubular pile 2.
In other embodiments, in the process of prefabricating the first tubular pile 1, firstly welding the nut 11 on the first tubular pile end plate 10, binding and connecting the first tubular pile end plate 10 and the reinforcing steel bar in the first tubular pile 1 together, specifically, tensioning and tightly connecting the first tubular pile end plate 10 and the first tubular pile 1 with each other through the tensioned prestressed concrete steel bar, and then pouring concrete to form a pile together with the first tubular pile 1 by the first tubular pile end plate 10; in the process of prefabricating the second tubular pile 2, firstly, the rod piece 4 is welded in the slot 210 of the sleeve 21, then the sleeve 21 is welded on the second tubular pile end plate 20, the second tubular pile end plate 20 and the reinforcing steel bars of the second tubular pile 2 are bound together, concretely, the first tubular pile end plate 20 and the first tubular pile 2 are mutually tensioned and tightly connected through the prestressed concrete steel bars after tensioning, then concrete is poured to form a pile together by the second tubular pile end plate 20 and the second tubular pile 2, the tubular pile end plate does not need to be additionally installed after the tubular pile is manufactured, the tubular pile and the tubular pile end plate are directly and integrally formed, and the tubular pile end plate are more firmly connected.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. The utility model provides a tubular pile connecting device, includes first tubular pile and second tubular pile, its characterized in that still includes:
the first tubular pile end plate is connected with the end face of the first tubular pile, and a nut is arranged on the first tubular pile end plate;
the second tubular pile end plate is connected with the end face of the second tubular pile, a sleeve is arranged on the second tubular pile end plate, and first meshing teeth are arranged on the sleeve;
the connecting piece, the connecting piece has threaded connection head and inserted bar, threaded connection head with the inserted bar is connected, be equipped with second interlock tooth on the inserted bar, the connecting piece passes through threaded connection head with on the first tubular pile end plate the nut is connected, the connecting piece passes through the inserted bar with on the second tubular pile end plate the sleeve cooperation is connected, first interlock tooth with the mutual interlock of second interlock tooth.
2. The tubular pile connecting device according to claim 1, characterized in that: the inserted bar comprises a plurality of gear teeth, and the gear teeth are annularly arranged at intervals.
3. The tubular pile connecting device according to claim 2, characterized in that: the ends of the gear shaping are bent inward.
4. The tubular pile connecting device according to claim 1, characterized in that: first tubular pile end plate middle part has first through-hole, the nut aligns first through-hole is installed one side of first tubular pile end plate.
5. The tubular pile connecting device according to claim 1, characterized in that: second tubular pile end plate middle part has the second through-hole, the sleeve aligns the second through-hole is installed one side of second tubular pile end plate.
6. The tubular pile connecting device according to claim 2, characterized in that: the sleeve is provided with a plurality of slots which are arranged at intervals in the circumferential direction, and each slot is internally provided with the first meshing teeth.
7. The tubular pile connecting device according to claim 6, characterized in that: notches are formed in the middle of each gear shaping, the notches correspond to the slots one to one, and the second meshing teeth are arranged on the groove edges of the notches.
8. A tubular pile connecting method is characterized by comprising the following steps:
prefabricating a first tubular pile and a second tubular pile;
installing a first tubular pile end plate at the end face of a first tubular pile, and installing a second tubular pile end plate at the end face of a second tubular pile;
the threaded connector of the connecting piece is screwed into the nut of the first tubular pile end plate, after the first tubular pile and the second tubular pile are preliminarily positioned and butted, the inserted bar is inserted into the sleeve of the second tubular pile end, the first occlusion tooth and the second occlusion tooth are occluded with each other, so that the first tubular pile end plate is butted with the second tubular pile end plate, and the first tubular pile is butted with the second tubular pile.
9. The tubular pile connecting method according to claim 8, characterized in that: and carrying out closed welding on the butt joint of the first tubular pile end plate and the second tubular pile end plate.
10. The tubular pile connecting method according to claim 8, characterized in that: when the first tubular pile is prefabricated, the first tubular pile end plate and the first tubular pile are formed into a pile together, and when the second tubular pile is prefabricated, the second tubular pile end plate and the second tubular pile are formed into a pile together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922197.XA CN112112156A (en) | 2020-09-04 | 2020-09-04 | Tubular pile connecting device and connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010922197.XA CN112112156A (en) | 2020-09-04 | 2020-09-04 | Tubular pile connecting device and connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112112156A true CN112112156A (en) | 2020-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010922197.XA Pending CN112112156A (en) | 2020-09-04 | 2020-09-04 | Tubular pile connecting device and connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112156A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073632A (en) * | 2021-04-13 | 2021-07-06 | 湖南映晟交通建设工程有限公司 | High-strength water-permeable fiber sand-free macroporous concrete pipe pile and construction method |
| CN114800842A (en) * | 2022-05-09 | 2022-07-29 | 福建安捷工贸有限公司 | Concrete pipe pile production method capable of saving end plate transportation cost |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7712013A (en) * | 1976-11-02 | 1978-05-05 | William F Gillen Jr | REINFORCED CONCRETE POST. |
| CN206070521U (en) * | 2016-09-23 | 2017-04-05 | 广州市建筑科学研究院新技术开发中心有限公司 | A kind of ring cylinder-wall system |
| CN111005373A (en) * | 2018-10-08 | 2020-04-14 | 广水市浍洋科技有限公司 | Prestressed concrete tubular pile inflation formula machinery quick-operation joint |
| CN213596971U (en) * | 2020-09-04 | 2021-07-02 | 广东三和管桩股份有限公司 | Tubular pile connecting device |
-
2020
- 2020-09-04 CN CN202010922197.XA patent/CN112112156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7712013A (en) * | 1976-11-02 | 1978-05-05 | William F Gillen Jr | REINFORCED CONCRETE POST. |
| CN206070521U (en) * | 2016-09-23 | 2017-04-05 | 广州市建筑科学研究院新技术开发中心有限公司 | A kind of ring cylinder-wall system |
| CN111005373A (en) * | 2018-10-08 | 2020-04-14 | 广水市浍洋科技有限公司 | Prestressed concrete tubular pile inflation formula machinery quick-operation joint |
| CN213596971U (en) * | 2020-09-04 | 2021-07-02 | 广东三和管桩股份有限公司 | Tubular pile connecting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073632A (en) * | 2021-04-13 | 2021-07-06 | 湖南映晟交通建设工程有限公司 | High-strength water-permeable fiber sand-free macroporous concrete pipe pile and construction method |
| CN114800842A (en) * | 2022-05-09 | 2022-07-29 | 福建安捷工贸有限公司 | Concrete pipe pile production method capable of saving end plate transportation cost |
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