CN221030105U - Steel strand prestress pile joint - Google Patents
Steel strand prestress pile joint Download PDFInfo
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- CN221030105U CN221030105U CN202322362533.1U CN202322362533U CN221030105U CN 221030105 U CN221030105 U CN 221030105U CN 202322362533 U CN202322362533 U CN 202322362533U CN 221030105 U CN221030105 U CN 221030105U
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- steel strand
- steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 148
- 239000010959 steel Substances 0.000 title claims abstract description 148
- 238000004873 anchoring Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000009424 underpinning Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to the technical field of building construction, in particular to a steel strand prestress pile joint. The pile foundation comprises a pile foundation assembly and a pile foundation assembly, wherein the pile foundation assembly comprises pile foundation concrete, a pile foundation steel strand is pre-buried on the inner side of the upper portion of the pile foundation concrete, the pile foundation assembly comprises pile foundation concrete, an anchoring hole is formed in the inner side of the pile foundation concrete, an anchor plate is connected to the inner side of the lower portion of the anchoring hole, a pile foundation steel strand is pre-buried on the inner side of the pile foundation concrete, and a corrugated pipe is connected to the top of the second pre-stress anchor. When the bottom pile concrete is connected with the top pile concrete, the bottom pile steel stranded wires are inserted into the second prestress anchorage device and then are continuously inserted into the corrugated pipe, the preliminary positioning of the bottom pile steel stranded wires is achieved through the arrangement of the second prestress anchorage device, the second prestress anchorage device can protect the positions of the connection positions of the bottom pile steel stranded wires and the inserted top pile concrete while positioning the bottom pile steel stranded wires, and then the connection stability of the bottom pile concrete and the top pile concrete is improved.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a steel strand prestress pile joint.
Background
The pile foundation engineering generally adopts the anti-floating pile to carry out anti-floating design, and if the design depth of the anti-floating pile is larger, pile extension treatment is needed. At present, a pile splicing method generally adopts a welded pile splicing method or a mechanical connection pile splicing method, but the welded pile splicing method has the problems of uncontrollable welding quality, low welding efficiency and the like.
The prior application number is: 202220741611.1, a steel strand prestress pile joint, comprising an upper pile and a lower pile, wherein the upper pile comprises an upper pile concrete, an upper pile prestress steel strand and a corrugated pipe, the upper pile prestress steel strand and the corrugated pipe are buried in the upper pile concrete, an anchoring hole is formed in the side surface of the upper pile concrete, an anchor plate is buried in the anchoring hole, and a tensioning anchor is arranged on the outer side of the anchor plate; the corrugated pipe of the lower pile prestressed steel strand stretching into the upper pile is fixedly connected with the tensioning anchorage device, but the position of the joint between the bottom pile steel strand and the inserted pile concrete cannot be protected correspondingly, so that the stability of the connection between the bottom pile concrete and the pile concrete is reduced in the using process.
Disclosure of utility model
In view of the above problems, an object of the present utility model is to: the utility model provides a steel strand wires prestressing force stake joint, the problem of the steadiness of being connected of foundation pile concrete and jack-up pile concrete is just so reduced to the in-process that just so in the use because can't protect the foundation pile steel strand wires with the position of inserting jack-up pile concrete back junction corresponding protection, when foundation pile concrete is connected with jack-up pile concrete, insert the corrugated tube with foundation pile steel strand wires after the second prestressing force ground tackle, through the setting of second prestressing force ground tackle, be used for the preliminary location of foundation pile steel strand wires, the second prestressing force ground tackle is when carrying out the location to foundation pile steel strand wires, can protect the foundation pile steel strand wires with the position of inserting jack-up pile concrete back junction, and then improve foundation pile concrete and jack-up pile concrete connection.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a steel strand wires prestressing force stake joint, includes end stake subassembly, jack-up stake subassembly, end stake subassembly includes end stake concrete, the inboard on end stake concrete upper portion is pre-buried has end stake steel strand wires, the jack-up stake subassembly includes the jack-up stake concrete, the anchor hole has been seted up to the inboard of jack-up stake concrete, the inboard of anchor hole lower part is connected with the anchor plate, the one end that the anchor plate kept away from the anchor hole is connected with first prestressing force ground tackle, the inboard of jack-up stake concrete is pre-buried has the jack-up stake steel strand wires, the end connection of jack-up stake steel strand wires has the third prestressing force ground tackle, the inboard of jack-up stake concrete lower part is pre-buried has the second prestressing force ground tackle, the top of second prestressing force ground tackle is connected with the bellows.
The beneficial effects of the utility model are as follows: when the bottom pile concrete is connected with the top pile concrete, the bottom pile steel stranded wire is inserted into the second prestress anchorage device and then is continuously inserted into the corrugated pipe, the second prestress anchorage device is used for preliminary positioning of the bottom pile steel stranded wire, the second prestress anchorage device can protect the position of the joint between the bottom pile steel stranded wire and the inserted top pile concrete while positioning the bottom pile steel stranded wire, and further the connection stability of the bottom pile concrete and the top pile concrete is improved.
In order to pass through the peripherally arranged bottom pile steel strand wires, the tensile property of the bottom pile steel strand wires is ensured:
As a further improvement of the above technical scheme: every two steel strands of the foundation pile are used together, the number of the groups of the steel strands of the foundation pile is the same as that of the second prestress anchors, and the steel strands of the foundation pile are arranged along the periphery of the foundation pile concrete.
The beneficial effects of this improvement are: when the device is used, the bottom pile steel strands in the same group stretch into the corresponding corrugated pipes at a constant speed, then penetrate through the corrugated pipes and then are connected with the first prestress anchorage device, and the tensile property of the bottom pile steel strands is guaranteed through the peripherally arranged bottom pile steel strands.
In order to stretch the bottom pile steel strands in the same group into the corresponding corrugated pipes at a constant speed, the bottom pile concrete is moved until the bottom pile steel strands are contacted and attached with the top pile concrete, and then the bottom pile concrete and the top pile concrete are connected:
As a further improvement of the above technical scheme: the size of the bottom surface of the top pile concrete is the same as that of the top surface of the bottom pile concrete.
The beneficial effects of this improvement are: when the bottom pile concrete and the top pile concrete are connected, sulfur cement is uniformly coated on the top surface of the bottom pile concrete and the bottom surface of the top pile concrete, after the bottom pile steel stranded wires of the same group are uniformly stretched into the corresponding corrugated pipes, the bottom pile concrete is moved until the bottom pile steel stranded wires are contacted and attached with the top pile concrete, and then the bottom pile concrete and the top pile concrete are connected.
For the positioning of the anchor plate, through the arrangement of the anchor holes:
As a further improvement of the above technical scheme: the anchoring holes are distributed along the peripheral surface of the pile-jacking concrete, and are obliquely arranged at 45 degrees with the outer wall of the pile-jacking concrete.
The beneficial effects of this improvement are: through the setting of anchor hole for to the location of anchor plate, simultaneously through the setting of anchor hole and anchor plate, need not to use the anchor end plate, and then can practice thrift the use amount of steel.
In order to set up through first prestressing force ground tackle for connect fixedly to the foundation pile steel strand wires, and then realize the steel strand wires of foundation pile concrete and foundation pile steel strand wires and connect:
As a further improvement of the above technical scheme: the hole size of the first prestressed anchorage device is double holes, the size of the aperture of the first prestressed anchorage device is matched with the size of the steel stranded wire of the foundation pile, and the number of the first prestressed anchorage devices is the same as the number of groups of the steel stranded wire of the foundation pile.
The beneficial effects of this improvement are: when the same group of bottom pile steel stranded wires pass through the corresponding corrugated pipes, the same group of bottom pile steel stranded wires are continuously moved and connected with the corresponding first prestress anchorage devices, and the bottom pile steel stranded wires are fixedly connected through the arrangement of the first prestress anchorage devices, so that the steel stranded wires of the bottom pile concrete and the bottom pile steel stranded wires are connected.
In order to set up through the stake steel strand wires, be used for increasing the prestressing force of stake concrete, and then through increasing the prestressing force of stake concrete:
As a further improvement of the above technical scheme: every three steel strands of the pile are used together, the hole size of the third prestressed anchorage device is three holes, the size of the aperture of the third prestressed anchorage device is matched with that of the steel strands of the pile, and the third prestressed anchorage device is embedded in the inner side of the pile concrete.
The beneficial effects of this improvement are: the third prestress anchorage device is used for positioning the steel stranded wires of the top pile, and the prestress of the top pile concrete is increased by the aid of the steel stranded wires of the top pile, so that compressive stress is generated by the aid of the prestress of the top pile concrete, and tensile stress generated by external load is counteracted and reduced by the aid of internal force of the tensile area concrete when the external load acts on the top pile concrete.
In order to protect the positions of the joints of the steel strands of the bottom pile and the inserted pile concrete, the stability of the connection of the bottom pile concrete and the pile concrete is improved:
As a further improvement of the above technical scheme: the lower end of the second prestress anchor and the lower end of the third prestress anchor are positioned at the same horizontal plane, the hole size of the second prestress anchor is double-hole, and the size of the aperture of the second prestress anchor is matched with the size of the steel strand of the bottom pile.
The beneficial effects of this improvement are: when the bottom pile concrete is connected with the top pile concrete, the bottom pile steel stranded wires are inserted into the second prestress anchorage device and then are continuously inserted into the corrugated pipe, the preliminary positioning of the bottom pile steel stranded wires is achieved through the arrangement of the second prestress anchorage device, the second prestress anchorage device can protect the positions of the connection positions of the bottom pile steel stranded wires and the inserted top pile concrete while positioning the bottom pile steel stranded wires, and then the connection stability of the bottom pile concrete and the top pile concrete is improved.
For the protection of the steel strand of the foundation pile:
As a further improvement of the above technical scheme: the corrugated pipes are embedded in the inner side of the pile-jacking concrete, the number of the corrugated pipes is the same as the number of the groups of the pile-jacking steel strands, and the corrugated pipes are embedded in one side of the pile-jacking steel strands.
The beneficial effects of this improvement are: the corrugated pipe is used for penetrating the steel stranded wires of the foundation pile and protecting the steel stranded wires of the foundation pile.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic diagram showing a front view of a cross-section of a pile-top concrete according to the present utility model.
Fig. 3 is a schematic cross-sectional view of a bellows of the present utility model.
Fig. 4 is a schematic top view of the pile concrete of the present utility model.
Fig. 5 is a schematic perspective view of a bellows of the present utility model.
In the figure: 1. a bottom pile assembly; 11. bottom pile concrete; 12. a bottom pile steel strand; 2. a pile jacking assembly; 21. pile jacking concrete; 22. an anchor hole; 23. an anchor plate; 24. a first pre-stressed anchor; 25. a pile-jacking steel strand; 26. a third pre-stressed anchor; 27. a second pre-stressed anchor; 28. a bellows.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.
As shown in fig. 1-5, a steel strand prestress pile joint comprises a bottom pile assembly 1 and a top pile assembly 2, wherein the bottom pile assembly 1 comprises a bottom pile concrete 11, a bottom pile steel strand 12 is pre-embedded at the inner side of the upper part of the bottom pile concrete 11, the top pile assembly 2 comprises a top pile concrete 21, an anchoring hole 22 is formed at the inner side of the top pile concrete 21, an anchor plate 23 is connected at the inner side of the lower part of the anchoring hole 22, one end of the anchor plate 23 far away from the anchoring hole 22 is connected with a first prestress anchor 24, a top pile steel strand 25 is pre-embedded at the inner side of the top pile concrete 21, a third prestress anchor 26 is connected at the end of the top pile steel strand 25, the second prestress anchors 27 are pre-embedded in the inner side of the lower part of the top pile concrete 21, the top of the second prestress anchors 27 is connected with a corrugated pipe 28, every two bottom pile steel strands 12 are used together, the number of the groups of the bottom pile steel strands 12 is the same as that of the second prestress anchors 27, and the bottom pile steel strands 12 are arranged along the periphery of the bottom pile concrete 11; when the device is used, the same group of bottom pile steel strands 12 extend into the corresponding corrugated pipes 28 at a constant speed, then pass through the corrugated pipes 28 and then are connected with the first prestress anchor 24, and the bottom pile steel strands 12 arranged at the periphery are used for guaranteeing the tensile property of the bottom pile steel strands 12, wherein the size of the bottom surface of the top pile concrete 21 is the same as the size of the top surface of the bottom pile concrete 11; when the bottom pile concrete 11 and the top pile concrete 21 are connected, sulfur cement is uniformly coated on the top surface of the bottom pile concrete 11 and the bottom surface of the top pile concrete 21, after the same group of bottom pile steel strands 12 uniformly extend into the corresponding corrugated pipes 28, the bottom pile concrete 11 is moved until the bottom pile steel strands contact and are attached to the top pile concrete 21, and then the bottom pile concrete 11 and the top pile concrete 21 are connected, and the sulfur cement is uniformly coated on the top surface of the bottom pile concrete 11 and the bottom surface of the top pile concrete 21 to ensure the flatness and the stability of the connection of the bottom pile concrete 11 and the top pile concrete 21, the anchor holes 22 are distributed and formed along the peripheral surface of the top pile concrete 21, and the anchor holes 22 are obliquely arranged at 45 degrees with the outer wall of the top pile concrete 21; through the arrangement of the anchor holes 22, the anchor plates 23 are positioned, and through the arrangement of the anchor holes 22 and the anchor plates 23, an anchor end plate is not required, so that the use amount of steel can be saved, the hole size of the first prestressed anchorage 24 is double holes, the size of the hole diameter of the first prestressed anchorage 24 is matched with the size of the bottom pile steel strand 12, and the number of the first prestressed anchorage 24 is the same as the number of groups of the bottom pile steel strand 12; after the bottom pile steel strands 12 of the same group pass through the corresponding corrugated pipes 28, the bottom pile steel strands 12 of the same group are continuously moved and connected with the corresponding first prestress anchors 24, the bottom pile steel strands 12 are connected and fixed through the arrangement of the first prestress anchors 24, so that the steel strands of the bottom pile concrete 11 and the bottom pile steel strands 12 are connected, every three top pile steel strands 25 are used together, the hole sizes of the third prestress anchors 26 are three holes, the hole sizes of the third prestress anchors 26 are matched with the hole sizes of the top pile steel strands 25, and the third prestress anchors 26 are embedded in the inner sides of the top pile concrete 21; the third prestress anchor 26 is used for positioning the pile-jacking steel strand 25, the pile-jacking steel strand 25 is used for increasing the prestress of the pile-jacking concrete 21, and further the prestress of the pile-jacking concrete 21 is increased, so that the compressive stress is generated by the internal force of the pile-jacking concrete 21 in the tension area when the external load acts, and the tensile stress generated by the external load is counteracted and reduced, the lower end of the second prestress anchor 27 and the lower end of the third prestress anchor 26 are positioned at the same horizontal plane, the hole size of the second prestress anchor 27 is double-hole, and the size of the hole diameter of the second prestress anchor 27 is matched with the size of the pile-jacking steel strand 12; when the bottom pile concrete 11 is connected with the top pile concrete 21, the bottom pile steel stranded wires 12 are inserted into the second prestress anchorage 27 and then inserted into the corrugated pipes 28, the second prestress anchorage 27 is used for preliminary positioning of the bottom pile steel stranded wires 12, the second prestress anchorage 27 can protect the positions of the joints of the bottom pile steel stranded wires 12 and the inserted top pile concrete 21 while positioning the bottom pile steel stranded wires 12, so that the connection stability of the bottom pile concrete 11 and the top pile concrete 21 is improved, the corrugated pipes 28 are embedded in the inner side of the top pile concrete 21, the number of the corrugated pipes 28 is the same as the number of groups of the top pile steel stranded wires 25, and the corrugated pipes 28 are embedded in one side of the top pile steel stranded wires 25; by the provision of the bellows 28, it is used for the passage of the underpinning steel strand 12 and at the same time for the protection of the underpinning steel strand 12.
The working principle of the utility model is as follows: when the device is used, when the bottom pile concrete 11 and the top pile concrete 21 are connected, sulfur cement is uniformly coated on the top surface of the bottom pile concrete 11 and the bottom surface of the top pile concrete 21, the same group of bottom pile steel strands 12 uniformly extend into the corresponding corrugated pipes 28, then pass through the corrugated pipes 28 and then are connected with the first prestress anchors 24, the peripherally arranged bottom pile steel strands 12 are used for guaranteeing the tensile property of the bottom pile steel strands 12, when the same group of bottom pile steel strands 12 uniformly extend into the corresponding corrugated pipes 28, the bottom pile concrete 11 is moved until contacting and attaching with the top pile concrete 21, and then the connection of the bottom pile concrete 11 and the top pile concrete 21 is realized, the flatness and the stability of the connection of the bottom pile concrete 11 and the top pile concrete 21 are guaranteed through uniformly coating the sulfur cement on the top surface of the bottom pile concrete 11 and the bottom surface of the top pile concrete 21, and the same group of bottom pile steel strands 12 pass through the corresponding corrugated pipes 28, the same group of the steel stranded wires 12 of the bottom pile are continuously moved and connected with the corresponding first prestress anchorage 24, the steel stranded wires are used for connecting and fixing the steel stranded wires 12 of the bottom pile, the steel stranded wires of the steel stranded wires 11 of the bottom pile and the steel stranded wires 12 of the bottom pile are further connected, the steel stranded wires of the steel stranded wires 11 of the bottom pile are further connected with the steel stranded wires 12 of the bottom pile, the steel stranded wires 25 of the top pile are positioned through the arrangement of the third prestress anchorage 26, the prestress of the steel stranded wires 25 of the top pile is increased, the prestress of the concrete 21 of the top pile is further increased, the internal force of the concrete 21 of the top pile in a tensile area under the action of external load generates compressive stress, the tensile stress generated by external load is counteracted and reduced, when the steel stranded wires 11 of the bottom pile and the concrete 21 of the top pile are connected, the steel stranded wires 12 of the bottom pile are inserted into the second prestress anchorage 27 and then continuously inserted into the corrugated pipe 28, the arrangement of the second prestress anchorage 27 is performed, the second prestress anchor 27 is used for preliminary positioning of the bottom pile steel stranded wire 12, and can protect the position of the joint of the bottom pile steel stranded wire 12 and the post-inserted pile concrete 21 when the bottom pile steel stranded wire 12 is positioned, so that the connection stability of the bottom pile concrete 11 and the pile concrete 21 is improved, the corrugated pipe 28 is arranged for penetrating the bottom pile steel stranded wire 12 and protecting the bottom pile steel stranded wire 12, the anchor holes 22 are arranged for positioning the anchor plate 23, and the anchor holes 22 and the anchor plate 23 are arranged without using an anchor end plate, so that the using amount of steel can be saved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (8)
1. The utility model provides a steel strand wires prestressing force stake joint, includes end stake subassembly (1), jack-up stake subassembly (2), end stake subassembly (1) include end stake concrete (11), the inboard on end stake concrete (11) upper portion has pre-buried end stake steel strand wires (12), its characterized in that: the pile-jacking assembly (2) comprises pile-jacking concrete (21), an anchor hole (22) is formed in the inner side of the pile-jacking concrete (21), an anchor plate (23) is connected to the inner side of the lower portion of the anchor hole (22), a first prestress anchor (24) is connected to one end, far away from the anchor hole (22), of the anchor plate (23), a pile-jacking steel strand (25) is embedded in the inner side of the pile-jacking concrete (21), a third prestress anchor (26) is connected to the tail end of the pile-jacking steel strand (25), a second prestress anchor (27) is embedded in the inner side of the lower portion of the pile-jacking concrete (21), and a corrugated pipe (28) is connected to the top of the second prestress anchor (27).
2. A steel strand prestressed pile joint according to claim 1, wherein: every two foundation pile steel strands (12) are used together, the number of the groups of the foundation pile steel strands (12) is the same as that of the second prestress anchors (27), and the foundation pile steel strands (12) are arranged along the periphery of the foundation pile concrete (11).
3. A steel strand prestressed pile joint according to claim 1, wherein: the bottom surface of the top pile concrete (21) has the same size as the top surface of the bottom pile concrete (11).
4. A steel strand prestressed pile joint according to claim 1, wherein: the anchoring holes (22) are distributed along the peripheral surface of the pile-jacking concrete (21), and the anchoring holes (22) are obliquely arranged at 45 degrees with the outer wall of the pile-jacking concrete (21).
5. A steel strand prestressed pile joint according to claim 1, wherein: the hole size of the first prestress anchor (24) is double holes, the size of the hole diameter of the first prestress anchor (24) is matched with the size of the bottom pile steel strand (12), and the number of the first prestress anchors (24) is the same as the number of groups of the bottom pile steel strand (12).
6. A steel strand prestressed pile joint according to claim 1, wherein: every three jack-up steel strands (25) are used together, the hole size of the third prestress anchorage device (26) is three holes, the size of the aperture of the third prestress anchorage device (26) is matched with the size of the jack-up steel strands (25), and the third prestress anchorage device (26) is pre-buried at the inner side of the jack-up concrete (21).
7. A steel strand prestressed pile joint according to claim 1, wherein: the lower end of the second prestress anchor (27) and the lower end of the third prestress anchor (26) are positioned at the same horizontal plane, the hole size of the second prestress anchor (27) is double-hole, and the size of the aperture of the second prestress anchor (27) is matched with the size of the bottom pile steel strand (12).
8. A steel strand prestressed pile joint according to claim 1, wherein: the corrugated pipes (28) are pre-buried in the inner side of the pile-jacking concrete (21), the number of the corrugated pipes (28) is the same as the number of groups of the pile-jacking steel stranded wires (25), and the corrugated pipes (28) are pre-buried in one side of the pile-jacking steel stranded wires (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322362533.1U CN221030105U (en) | 2023-08-31 | 2023-08-31 | Steel strand prestress pile joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322362533.1U CN221030105U (en) | 2023-08-31 | 2023-08-31 | Steel strand prestress pile joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221030105U true CN221030105U (en) | 2024-05-28 |
Family
ID=91137463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322362533.1U Active CN221030105U (en) | 2023-08-31 | 2023-08-31 | Steel strand prestress pile joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221030105U (en) |
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2023
- 2023-08-31 CN CN202322362533.1U patent/CN221030105U/en active Active
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