CN219175940U - Pull rod type circumferential prestress tensioning reinforcing or strengthening device - Google Patents
Pull rod type circumferential prestress tensioning reinforcing or strengthening device Download PDFInfo
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- CN219175940U CN219175940U CN202221891314.1U CN202221891314U CN219175940U CN 219175940 U CN219175940 U CN 219175940U CN 202221891314 U CN202221891314 U CN 202221891314U CN 219175940 U CN219175940 U CN 219175940U
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- carbon fiber
- tensioning
- prestress
- prestress tensioning
- fiber plate
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 21
- 238000005728 strengthening Methods 0.000 title claims abstract description 14
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 68
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- 238000010030 laminating Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims 2
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- 238000005516 engineering process Methods 0.000 description 6
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to a pull rod type circumferential prestress tensioning reinforcing or strengthening device, which comprises a carbon fiber plate or a carbon fiber plate group and is characterized in that: installing anchors at two ends of the carbon fiber plates or two ends of the carbon fiber plate group, and connecting at least one carbon fiber plate or carbon fiber plate group through a prestress tension retainer to form a circumferential structure; the device also comprises a detachable prestress tensioning auxiliary mechanism for applying prestress. The utility model has good reinforcing or strengthening effect and simple structure. The prestress tensioning auxiliary mechanism can be detached and reused after tensioning is completed.
Description
Technical Field
The utility model relates to a device for circumferential reinforcement or reinforcement of a civil engineering structural member, in particular to a pull rod type circumferential prestress tensioning reinforcement or reinforcement device.
Background
The circumferential reinforcement of the component is a measure for eliminating potential safety hazards such as cracking and deformation of the component or performing earthquake-resistant reinforcement. In addition, for hollow cylindrical members such as large silos and pipelines, too high internal pressure is a potential safety hazard for deformation of the members, and circumferential reinforcement is also needed to achieve partial or complete elimination of circumferential tensile stress generated by the internal pressure of the load.
In the prior art, the circumferential reinforcement method for the member is divided into passive reinforcement and active reinforcement in the form of reinforcement stress, wherein the carbon fiber cloth pasting reinforcement technology belongs to the category of passive reinforcement. In the active reinforcement, the patent CN108843038A discloses a prestress fiber cloth reinforcement device and a construction method, the prestress tensioning is performed on the fiber cloth, but the tensioning of the fiber cloth is easy to occur phenomena of wire breakage, wire detachment and the like caused by uneven stress, and the tensioning force and the elongation have no linear correlation so that the tensioning effect is difficult to control, so that the fiber cloth is not suitable for active reinforcement (i.e. prestress tensioning) in actual engineering, and is common in passive reinforcement (i.e. common adhesion reinforcement). In addition, the method is characterized in that resin impregnation is carried out after the fiber cloth is stretched, and the impregnation effect is difficult to control in a state that the fiber cloth is stretched; and the tensioned fiber cloth is tightly contacted with the surface of the reinforcing member, so that the impregnating adhesive is difficult to dip between the fiber cloth and the reinforcing member, and the bonding state is difficult to form.
In fact, carbon fiber plates are more suitable for active reinforcement because carbon fiber plates are manufactured in a factory by using a pultrusion process, and the performances of uniformity, strength, durability and the like of materials are far higher than those of fiber cloth formed by dipping in a construction site, so that the prestress carbon fiber plate reinforcement technology is common in engineering, and the prestress fiber cloth only stays in a laboratory stage and is rarely used for engineering practice.
Disclosure of Invention
In order to overcome the defects in the prior art, particularly the pain points that the fiber cloth is not suitable for prestress tensioning and is difficult to impregnate, the utility model aims to provide a pull rod type circumferential prestress tensioning reinforcing or strengthening device.
The technical scheme adopted for achieving the purpose is as follows: namely a pull rod type circumferential prestress tensioning reinforcing or strengthening device, which comprises a carbon fiber plate or a carbon fiber plate group and is characterized in that: installing anchors at two ends of the carbon fiber plates or two ends of the carbon fiber plate group, and connecting at least one carbon fiber plate or carbon fiber plate group through a prestress tension retainer to form a circumferential structure; the prestress tensioning retainer comprises crescent plates arranged at the front ends of two adjacent anchorage devices, and upper and lower tensioning screws, wherein the upper and lower tensioning screws respectively penetrate through holes formed in the upper and lower levels of the two crescent plates, one end of each of the upper and lower tensioning screws is positioned through a fixed end nut, the other end of each of the upper and lower tensioning screws is a prestress tensioning end, and the prestress tensioning end is positioned through a locking nut after prestress tensioning is completed.
Further, the pull rod type circumferential prestress tensioning reinforcing or strengthening device is formed by connecting two carbon fiber plates or carbon fiber plate groups through prestress tensioning retainers between adjacent anchors; the carbon fiber plate group is formed by laminating at least two carbon fiber plates.
Furthermore, the detachable prestress tensioning auxiliary mechanism is connected with the prestress tensioning end of the tensioning screw and is used for applying prestress before the annular structure is connected through the prestress tensioning retainer. The detachable prestress tensioning auxiliary mechanism is a through jack and a through pressure sensor.
The utility model has very remarkable positive effects:
(1) The uniformity of the carbon fiber plate is better, the strength is higher, the carbon fiber plate is far better than fiber cloth in the active reinforcement technology, and the excellent performance of the carbon fiber can be better exerted;
(2) Compared with the conventional linear prestress carbon fiber plate reinforcement technology, the construction material is greatly saved and the construction time is greatly shortened without drilling and bar planting on the component and installing the anchoring seat;
(3) The device has small size, does not occupy space, and can realize multi-layer or multi-layer circumferential prestress tensioning enhancement or reinforcement;
(4) The circumferential reinforcement or reinforcement construction is convenient, and large mechanical equipment is not needed to assist;
(5) The device has replaceability, and can be repeatedly enhanced or reinforced at the original position;
(6) The problem of construction quality of the prestressed steel strand in grouting construction is solved without reserving a pore canal;
(7) The application range is wide, and pier columns, capping beams, cable towers and the like in bridge bearing members can be reinforced or strengthened by adopting the circumferential prestress tensioning structure;
(8) The carbon fiber plate can be prestressed, so that the carbon fiber plate is tensioned in a tensioning state, the stress conversion efficiency is high, and the carbon fiber plate and the reinforced member can be integrated by gluing before tensioning, so that the prestress loss is reduced to the greatest extent. The problem that the strength of the externally attached carbon fiber cloth material cannot be fully exerted is solved, and the problem that the pretension value of the circumferential tensioning and reinforcing device of other carbon fiber materials is low is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIGS. 2a and 2b are partial schematic views of the connection parts of the present utility model;
FIG. 3 is a schematic diagram of a tension state of the present utility model;
FIG. 4 is a partial schematic view of a tensile state connection of the present utility model;
FIG. 5 is a schematic view of the hollow frame in the present utility model;
FIGS. 6a and 6b are schematic structural views of a crescent moon plate in the device of the present utility model;
FIG. 7 is an overall schematic of an embodiment of the reinforcement cable tower of the present utility model;
fig. 8 is a partial schematic view of an embodiment of the reinforcing cable tower of the present utility model.
In the accompanying drawings: 1-anchorage device, 2-crescent plate, 3-hollow frame, 4-tensioning screw, 5-penetrating jack, 6-penetrating pressure sensor, 7-carbon fiber plate, 13-locking nut, 14-tensioning end nut, 15-fixed end nut and 16-cable tower.
Detailed Description
The technical solution of the present utility model can be further illustrated by non-limiting examples given in the accompanying drawings.
Referring to the attached drawings, the pull rod type annular prestress tensioning reinforcing or strengthening device provided by the utility model comprises carbon fiber plates 7 or carbon fiber plate groups, wherein anchors 1 are arranged at two ends of the carbon fiber plates 7 or two ends of the carbon fiber plate groups, and at least one carbon fiber plate or carbon fiber plate group is connected through a prestress tensioning retainer to form an annular structure; the prestress tensioning retainer comprises crescent plates 2 arranged at the front ends of two adjacent anchorage devices, and upper and lower tensioning screws 4, wherein the upper and lower tensioning screws respectively penetrate through holes formed in the upper and lower sides of the two crescent plates, one end of each of the upper and lower tensioning screws is positioned through a fixed end nut 15, the other end of each of the upper and lower tensioning screws is a prestress tensioning end, and the prestress tensioning end is positioned through a locking nut 13 after prestress tensioning is completed.
Further, two carbon fiber plates 7 or carbon fiber plate groups of the pull rod type annular prestress tensioning reinforcing or strengthening device are connected through prestress tensioning retainers between adjacent anchors 1 to form an annular structure; the carbon fiber plate group is formed by laminating at least two carbon fiber plates 7.
The pull rod type circumferential prestress tensioning reinforcing or strengthening device further comprises a detachable prestress tensioning auxiliary mechanism and a hollow frame 3, wherein the prestress tensioning auxiliary mechanism comprises a through jack 5 and a through pressure sensor 6; when in prestress tensioning, prestress tensioning ends of upper and lower tensioning screws 4 of the prestress tensioning retainer penetrate through the hollow frame 3 to enable the lock nut 13 to be positioned in the hollow frame, penetrate through the through jack 5 and the through pressure sensor 6 and are positioned by the tensioning end nuts 14; after the prestress tensioning is finished, the locking nut 13 is positioned, and the prestress tensioning auxiliary mechanism and the hollow frame are removed.
In fig. 2b the anchor 1 is a wave tooth anchor, but the anchor 1 may be used as a wave tooth anchor, a flat anchor wedge anchor or other anchors.
Preferably, the crescent plate 2 is a detachable structure: the two clamping plates are fixed into a whole through bolts and nuts, wherein a strip hole through which the carbon fiber plate 7 or the carbon fiber plate group passes is formed in the middle part of the crescent plate 2.
Embodiment one: the cable tower is enhanced and implemented as shown in fig. 7 and 8.
step 8, dismantling the prestress tensioning auxiliary mechanism and the hollow frame: after the locking nut 13 in the hollow frame 3 is tightly screwed, the tensioning end nut 14 is screwed out, and the through type pressure sensor 6, the through type jack 5 and the hollow frame 3 are taken out from the prestress tensioning end;
and 9, repeating the steps to finish the circumferential tensioning enhancement of the second carbon fiber plate group.
Obviously, the method has the following beneficial effects:
1. the technology is convenient to operate.
2. The device has replaceability, and can be enhanced at the original position again after construction errors occur.
3. The technology has good reinforcing effect, and greatly counteracts or balances the excessive tensile stress caused by the oblique pulling force transmitted by the stay cable of the cable tower.
The embodiments described above are intended to assist the reader in understanding the principles of the utility model and should be understood that the scope of the utility model is not limited to such specific statements and examples. It will be apparent to those skilled in the art from this disclosure that various other specific modifications and combinations can be made in accordance with the teachings of the present utility model without departing from the spirit thereof, and such modifications and combinations remain within the scope of the utility model.
Claims (5)
1. The utility model provides a pull rod formula hoop prestressing force tensioning reinforcing or reinforcing apparatus, includes carbon fiber board or carbon fiber board group, its characterized in that: installing anchors at two ends of the carbon fiber plates or two ends of the carbon fiber plate group, and connecting at least one carbon fiber plate or carbon fiber plate group through a prestress tension retainer to form a circumferential structure; the prestress tensioning retainer comprises crescent plates (2) arranged at the front ends of two adjacent anchorage devices, and upper and lower tensioning screws (4), wherein the upper and lower tensioning screws respectively penetrate through holes in the upper and lower horizontal arrangement of the two crescent plates, one end of each of the upper and lower tensioning screws is positioned through a fixed end nut (15), the other end of each of the upper and lower tensioning screws is a prestress tensioning end, and the prestress tensioning end is positioned through a locking nut (13) after prestress tensioning is completed.
2. A pull rod type circumferential prestress tensioning reinforcing or strengthening device as set forth in claim 1, wherein: two carbon fiber plates or carbon fiber plate groups are connected through a prestress tensioning retainer between adjacent anchors to form a circumferential structure; the carbon fiber plate group is formed by laminating at least two carbon fiber plates.
3. A pull rod type circumferential prestress tensioning reinforcing or strengthening device as set forth in claim 1, wherein: the device also comprises a detachable prestress tensioning auxiliary mechanism and a hollow frame, wherein the prestress tensioning auxiliary mechanism is a punching jack and a punching pressure sensor; when in prestress tensioning, prestress tensioning ends of upper and lower tensioning screws (4) of the prestress tensioning retainer penetrate through the hollow frame (3) to enable locking nuts (13) to be located in the hollow frame, penetrate through the penetrating jack (5) and the penetrating pressure sensor (6) and are positioned by tensioning end nuts (14); and after the prestress tensioning is finished, the locking nut (13) is positioned, and the prestress tensioning auxiliary mechanism and the hollow frame are removed.
4. A pull rod type circumferential prestress tensioning reinforcing or strengthening device according to claim 1 or 2, characterized in that: the anchor is a wave tooth anchor, a flat anchor or a wedge anchor.
5. A pull rod type circumferential prestress tensioning reinforcing or strengthening device according to claim 1 or 2, characterized in that: the crescent plate (2) is of a detachable structure: the two clamping plates are fixed into a whole through bolts and nuts, wherein a strip hole through which a carbon fiber plate (7) or a carbon fiber plate group passes is formed in the middle of the crescent plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221891314.1U CN219175940U (en) | 2022-07-20 | 2022-07-20 | Pull rod type circumferential prestress tensioning reinforcing or strengthening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221891314.1U CN219175940U (en) | 2022-07-20 | 2022-07-20 | Pull rod type circumferential prestress tensioning reinforcing or strengthening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219175940U true CN219175940U (en) | 2023-06-13 |
Family
ID=86673045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221891314.1U Active CN219175940U (en) | 2022-07-20 | 2022-07-20 | Pull rod type circumferential prestress tensioning reinforcing or strengthening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219175940U (en) |
-
2022
- 2022-07-20 CN CN202221891314.1U patent/CN219175940U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230901 Address after: No. LC83, 2nd Floor, Building 39, Chongqing University of Science and Technology, No. 20 Daxue Cheng East Road, Huxi Street, High tech Zone, Shapingba District, Chongqing, 401331 Patentee after: Chongqing Suobida Intelligent Technology Development Co.,Ltd. Address before: Room 1-1, No.1-5, Tieshan Road, Biquan street, Bishan District, Chongqing 402760 Patentee before: Chongqing Guqiao Intelligent Technology Research Institute Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240807 Address after: 401120 B66, No. 1-2, Floor 1, Zone C, Neptune Science and Technology Building, No. 62, Xingguang Avenue, Yubei District, Chongqing Patentee after: Chongqing Dali Cable Technology Co.,Ltd. Country or region after: China Address before: No. LC83, 2nd Floor, Building 39, Chongqing University of Science and Technology, No. 20 Daxue Cheng East Road, Huxi Street, High tech Zone, Shapingba District, Chongqing, 401331 Patentee before: Chongqing Suobida Intelligent Technology Development Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |