CN215925725U - Large-tonnage prestressing force carbon fiber plate anchor - Google Patents
Large-tonnage prestressing force carbon fiber plate anchor Download PDFInfo
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- CN215925725U CN215925725U CN202121322439.8U CN202121322439U CN215925725U CN 215925725 U CN215925725 U CN 215925725U CN 202121322439 U CN202121322439 U CN 202121322439U CN 215925725 U CN215925725 U CN 215925725U
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Abstract
The utility model relates to a large-tonnage prestressed carbon fiber plate anchoring device, in particular to a large-tonnage prestressed carbon fiber plate anchoring device, which comprises a fixed end anchoring bottom plate and a tensioning end anchoring bottom plate, wherein a first connecting device is arranged on the fixed end anchoring bottom plate, the fixed end anchoring device is connected in the first connecting device in a matching way, and a second connecting device is arranged on the tensioning end anchoring bottom plate; the clamping device is simple in structure and convenient to use, the fixed end anchoring device and the stretching end anchoring device are connected by the step hole-shaped first connecting device and the step hole-shaped second connecting device, so that the anchoring efficiency is high, clamping areas for clamping the prestressed carbon fiber plate are arranged on the fixed end anchoring device and the stretching end anchoring device, so that the clamping force is uniformly transmitted to the prestressed carbon fiber plate, the carbon fiber is prevented from being stressed unevenly, and the carbon fiber strength utilization rate is improved.
Description
Technical Field
The utility model relates to an anchorage device, in particular to a large-tonnage prestressed carbon fiber plate anchorage device.
Background
With the rapid development of national economy, the traffic volume of roads is continuously increased, the grade requirement on the roads is higher and higher, and many bridges built in early stage face the problem of bearing capacity improvement such as dismantling, rebuilding or reinforcing due to the reasons of standard improvement, load increase, material aging, environmental corrosion, use function change and the like. If the building is dismantled and rebuilt, the traffic is affected and even interrupted, a long time is needed, a large amount of building waste is generated, the construction cost is high, and great economic burden is brought to the country and the society. The bridge is reinforced to reinforce structurally, the internal force of the structure is improved, the bearing capacity of the bridge is improved, and the service life of the bridge is prolonged, so that the bridge is inevitably selected according to the current national conditions of China.
The carbon fiber plate has the advantages of high strength, high corrosion resistance, good fatigue resistance and the like, is widely used and well developed in the reinforcement and reinforcement of bridge structures in recent years, and the use of the prestressed carbon fiber plate for reinforcing the bridge structures can delay the generation and development of structural cracks, reduce the width of the existing cracks, achieve the synergistic stress with the structures, relieve the stress strain of concrete structure steel bars, and effectively improve the yield load and the ultimate bearing capacity of the structures. Therefore, the composite material is widely applied to the field of civil engineering reinforcement, in particular to the reinforcement of old bridges and old buildings. However, the existing carbon fiber plate tensioning and anchoring device is influenced by the structure of the anchorage device and the anchoring efficiency of the anchorage device, the value of the tensioning force is generally small, and the requirement of improving the bearing capacity of an actual bridge is difficult to meet, so that a large-tonnage prestressed carbon fiber plate reinforcing technology is urgently needed.
The realization of the large-tonnage prestressed carbon fiber plate reinforcing technology needs a set of prestressed carbon fiber plate anchoring device which has high anchoring effect, can realize industrial production and the corresponding construction process thereof, and has the advantages of high anchoring effect, convenient field assembly and construction and controllable quality.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides the large-tonnage prestressed carbon fiber plate anchoring device which is simple in structure, convenient to use, capable of realizing factory production, field assembly and construction, controllable in quality and high in anchoring efficiency of the anchoring device.
The utility model relates to a large-tonnage prestressed carbon fiber plate anchoring device which comprises a fixed end anchoring bottom plate and a tensioning end anchoring bottom plate, wherein the fixed end anchoring bottom plate and the tensioning end anchoring bottom plate are correspondingly fixed on the surface of a reinforced structure;
one end of the first connecting device, which is far away from the second connecting device, extends out from the fixed end anchoring baseplate along the direction that the first connecting device and the second connecting device are far away from each other;
the first connecting device and the second connecting device are both stepped holes;
the width of one end of the first connecting device, which is close to the surface of the reinforced structure, is larger than the width of the other end of the first connecting device on the cross section of the first connecting device;
the width of the second connecting means at the end of the second connecting means near the surface of the structure to be reinforced is greater than the width of the second connecting means at the other end of the second connecting means in the cross section.
Preferably, the fixed end anchoring device comprises a fixed end upper anchoring plate and a fixed end lower anchoring plate, two corresponding side edges of the fixed end lower anchoring plate are step-shaped and matched with two corresponding side edges of the first connecting device, and the fixed end upper anchoring plate is fixedly arranged on the fixed end lower anchoring plate through a first fastening device.
Preferably, the tensioning end anchoring device comprises a tensioning end upper anchoring plate and a tensioning end lower anchoring plate, two side edges corresponding to the tensioning end lower anchoring plate are step-shaped and matched with two side edges corresponding to the second connecting device, and the tensioning end upper anchoring plate is fixedly arranged on the fixed end lower anchoring plate through a second fastening device.
Preferably, the clamping area on the fixed end anchoring device is arranged between the fixed end upper anchor plate and the fixed end lower anchor plate, and the clamping area is a first clamping area;
the first fastening device comprises a plurality of high-strength fastening bolts, and the high-strength fastening bolts are respectively and correspondingly arranged on two sides of the first clamping area.
Preferably, the clamping area on the tensioning end anchoring device is arranged between the tensioning end upper anchor plate and the tensioning end lower anchor plate, and the clamping area is a second clamping area;
the second fastening device also comprises a plurality of high-strength fastening bolts, and the high-strength fastening bolts are respectively and correspondingly arranged on two sides of the second clamping area.
Preferably, friction force increasing structures are arranged on the lower surface of the fixed end upper anchor plate and the upper surface of the fixed end lower anchor plate in the first clamping area;
and friction force increasing structures are arranged on the lower surface of the upper anchor plate at the tensioning end and the upper surface of the lower anchor plate at the tensioning end in the second clamping area.
Preferably, the friction force increasing structure is a grid-shaped groove, the depth of each groove is 1mm, and the width of each groove is 4-6 mm.
Preferably, the high-strength fastening bolts for connecting the fixed end upper anchor plate and the fixed end lower anchor plate and the high-strength fastening bolts for connecting the tensioning end upper anchor plate and the tensioning end lower anchor plate are sixteen;
the distance between two adjacent high-strength fastening bolts on the same side of the first clamping area is 40mm, and the distance between two corresponding high-strength fastening bolts on two sides of the first clamping area is 74 mm;
the distance between two adjacent high-strength fastening bolts on the same side of the second clamping area is 40mm, and the distance between two corresponding high-strength fastening bolts on two sides of the second clamping area is 74 mm.
Or preferably, the number of the first connecting devices is two, the two first connecting devices are arranged in parallel, and the lengths of the two first connecting devices are equal;
the two second connecting devices are arranged in parallel, and the lengths of the two second connecting devices are equal;
the distance between the two first connecting means is equal to the distance between the two second connecting means.
The prestressed carbon fiber plate clamping device is simple in structure, convenient to use, not prone to deviation caused by the influence of construction environment, and capable of fully playing the characteristics of light weight and high strength of the prestressed carbon fiber plate, the fixed end anchoring device and the tensioning end anchoring device are connected through the step-hole-shaped first connecting device and the step-hole-shaped second connecting device, so that the anchoring efficiency is high, clamping areas used for clamping the prestressed carbon fiber plate are arranged on the fixed end anchoring device and the tensioning end anchoring device, clamping of the prestressed carbon fiber plate is achieved, clamping force is transmitted to the prestressed carbon fiber plate uniformly, uneven stress of carbon fiber is avoided, and the utilization rate of carbon fiber strength is improved.
The utility model further ensures the reliability of anchoring by utilizing the friction force increasing structures arranged in the first clamping area and the second clamping area.
After the primary fixed end anchoring bottom plate and the tensioning end anchoring bottom plate are installed, two sets of anchoring structures can be installed in parallel, and the two sets of systems can be tensioned simultaneously after installation, so that the stress uniformity of a building is ensured, and the construction efficiency is improved. The device is a combined assembled structure, is convenient to construct on site, is not easily influenced by construction environment, can fully exert the advantages of the active reinforcing technology of the prestressed carbon fiber plate, and is beneficial to engineering and industrial implementation.
Drawings
FIG. 1 is a front view of the inventive structure.
Fig. 2 is a cross-sectional view a-a of fig. 1.
Fig. 3 is a cross-sectional view of B-B in fig. 1.
Fig. 4 is a schematic diagram of a structure of a fixed-end lower anchor plate or a tensile-end lower anchor plate.
Reference numerals: 1-fixed end anchoring device, 2-tensioned end anchoring device, 3-fixed end anchoring base plate, 4-tensioned end anchoring base plate, 5-fixed end upper anchoring plate, 6-fixed end lower anchoring plate, 7-prestressed carbon fiber plate, 8-high-strength fastening bolt, 9-chemical anchor bolt, 10-first connecting device, 11-second connecting device, 12-tensioned end upper anchoring plate, and 13-tensioned end lower anchoring plate.
Detailed Description
The utility model relates to a large-tonnage prestressed carbon fiber plate anchoring device, which comprises a fixed end anchoring bottom plate 3 and a tensioning end anchoring bottom plate 4, wherein the fixed end anchoring bottom plate 3 and the tensioning end anchoring bottom plate 4 are correspondingly fixed on the surface of a structure to be reinforced, a first connecting device 10 is arranged on the fixed end anchoring bottom plate 3, a fixed end anchoring device 1 is connected in the first connecting device 10 in a matching manner, a second connecting device 11 is arranged on the tensioning end anchoring bottom plate 4, a tensioning end anchoring device 2 is connected in the second connecting device 11 in a matching manner, and clamping areas for clamping a prestressed carbon fiber plate 7 are arranged on the fixed end anchoring device 1 and the tensioning end anchoring device 2;
one end of the first connecting device 10 far away from the second connecting device extends out from the fixed end anchoring baseplate along the direction that the first connecting device 10 and the second connecting device 11 are far away from each other;
the first connecting device 10 and the second connecting device 11 are both stepped holes;
in the cross section of the first connecting means 10, the width of the first connecting means 10 at the end close to the surface of the structure to be reinforced is greater than the width of the first connecting means 10 at the other end of the cross section;
in the cross section of the second connecting means 11, the width of the end of the second connecting means 11 close to the surface of the structure to be reinforced is greater than the width of the other end of the second connecting means 11 in the cross section.
The fixed end anchoring device 1 comprises a fixed end upper anchoring plate 5 and a fixed end lower anchoring plate, two corresponding side edges of the fixed end lower anchoring plate are step-shaped and matched with two corresponding side edges of the first connecting device 10, and the fixed end upper anchoring plate 5 is fixedly arranged on the fixed end lower anchoring plate through the first fastening device.
The tensioning end anchoring device 2 comprises a tensioning end upper anchor plate 12 and a tensioning end lower anchor plate, two side edges corresponding to the tensioning end lower anchor plate are step-shaped and matched with two side edges corresponding to the second connecting device 11, and the tensioning end upper anchor plate 12 is fixedly arranged on the fixed end lower anchor plate through a second fastening device.
The clamping area on the fixed end anchoring device 1 is arranged between the fixed end upper anchor plate 5 and the fixed end lower anchor plate, and the clamping area is a first clamping area;
the first fastening device comprises a plurality of high-strength fastening bolts 8, and the high-strength fastening bolts 8 are respectively and correspondingly arranged on two sides of the first clamping area.
The clamping area on the tensioning end anchoring device 2 is arranged between the tensioning end upper anchor plate 12 and the tensioning end lower anchor plate, and the clamping area is a second clamping area;
the second fastening device also comprises a plurality of high-strength fastening bolts 8, and the high-strength fastening bolts 8 are respectively and correspondingly arranged on two sides of the second clamping area.
Friction force increasing structures are arranged on the lower surface of the fixed end upper anchor plate 5 and the upper surface of the fixed end lower anchor plate in the first clamping area;
and friction force increasing structures are arranged on the lower surface of the tensioning end upper anchor plate 12 and the upper surface of the tensioning end lower anchor plate in the second clamping area.
The friction force increasing structure is a latticed groove, the depth of the groove is 1mm, the width of the groove is 4-6mm, and the latticed groove can be an orthogonal latticed groove when the friction force increasing structure is used.
The high-strength fastening bolts for connecting the fixed end upper anchor plate and the fixed end lower anchor plate and the high-strength fastening bolts for connecting the tensioning end upper anchor plate and the tensioning end lower anchor plate are sixteen;
the distance between two adjacent high-strength fastening bolts 8 positioned on the same side of the first clamping area is 40mm, and the distance between two corresponding high-strength fastening bolts 8 positioned on two sides of the first clamping area is 74 mm;
the distance between two adjacent high-strength fastening bolts 8 on the same side of the second clamping area is 40mm, and the distance between two corresponding high-strength fastening bolts 8 on two sides of the second clamping area is 74 mm.
When in use, two first connecting devices 10 are arranged, the two first connecting devices 10 are arranged in parallel, and the lengths of the two first connecting devices 10 are equal;
the number of the second connecting devices 11 is two, the two second connecting devices 11 are arranged in parallel, and the lengths of the two second connecting devices 10 are equal;
the distance between the two first connecting means 10 is equal to the distance between the two second connecting means 11.
The fixed-end anchoring device 1 is installed as follows: sticking a prestressed carbon fiber plate 7 coated with interfacial adhesive and anchorage adhesive on the upper surface of a fixed end lower anchor plate in a factory, finally connecting a fixed end upper anchor plate 5 with the fixed end lower anchor plate through a high-strength fastening bolt 8, enabling the prestressed carbon fiber plate 7 to realize anchoring under the combined action of the high-strength fastening bolt 8, the interfacial adhesive and the anchorage adhesive, and standing and maintaining for 7 days at normal temperature; and then, grooving at a preset part of the target reinforcing structure, reserving a position gap before pushing the lower anchor plate of the fixed end in the grooving process, controlling the depth to be consistent with the thickness of the fixed end anchor bottom plate 3, installing the fixed end anchor bottom plate 3 on the surface of the target reinforcing structure, polishing and roughening the concrete groove surface after the grooving process, and keeping the flatness. A reserved bolt hole is formed in the fixed end anchoring base plate 3, and the fixed end anchoring base plate 3 is installed and fixed in a composite mode by adopting sticky steel and a reverse taper chemical anchor bolt to penetrate through the reserved bolt hole; after the fixed end anchoring base plate 3 is installed, the installed fixed end anchoring device 1 is pushed into the fixed end anchoring base plate 3 through the step-shaped first connecting device 10, and the installation of the fixed end anchoring device is completed.
The installation steps of the tension end anchoring device 2 are as follows: firstly, a tensioning end lower anchor plate of a tensioning end anchoring device 2 is installed in a second connecting device 11 on a tensioning end anchoring bottom plate 4, then the tensioning end anchoring bottom plate 4 is fixed on a reinforced structure by adopting sticky steel and an inverted cone-shaped chemical anchor bolt, a prestressed carbon fiber plate 7 coated with interfacial adhesive and anchorage adhesive is pasted on the upper surface of the tensioning end lower anchor plate after tensioning is completed, and finally the tensioning end upper anchor plate 12 is connected with the tensioning end lower anchor plate through a high-strength fastening bolt 8, so that the prestressed carbon fiber plate 7 is anchored under the combined action of the high-strength fastening bolt 8, the interfacial adhesive and the anchorage adhesive.
The utility model has simple structure and convenient use, is not easy to cause deviation under the influence of construction environment, fully exerts the characteristics of light weight and high strength of the prestressed carbon fiber plate 7, utilizes the step-hole-shaped first connecting device and the step-hole-shaped second connecting device to connect the fixed end anchoring device 1 and the tensioning end anchoring device 2, ensures reliable anchoring effect, realizes the clamping of the prestressed carbon fiber plate 7 by using the clamping areas which are arranged on the fixed end anchoring device 1 and the tensioning end anchoring device 2 and are used for clamping the prestressed carbon fiber plate 7, ensures that the clamping force is uniformly transmitted to the prestressed carbon fiber plate 7, avoids the uneven stress of the carbon fiber and improves the utilization rate of the carbon fiber strength.
The utility model further ensures the reliability of anchoring by utilizing the friction force increasing structures arranged in the first clamping area and the second clamping area.
After the primary fixed end anchoring bottom plate 3 and the tensioning end anchoring bottom plate 4 are installed, two sets of anchoring structures can be installed in parallel, and the two sets of systems can be tensioned simultaneously after installation, so that the uniformity of stress of a building is ensured, and the construction efficiency is improved. The device is a combined assembled structure, is convenient to construct on site, is not easily influenced by construction environment, can fully exert the advantages of the active reinforcing technology of the prestressed carbon fiber plate 7, and is beneficial to engineering and industrial implementation.
Claims (9)
1. A large-tonnage prestressed carbon fiber plate anchoring device comprises a fixed end anchoring bottom plate (3) and a tensioning end anchoring bottom plate (4), wherein the fixed end anchoring bottom plate (3) and the tensioning end anchoring bottom plate (4) are correspondingly fixed on the surface of a reinforced structure, and the large-tonnage prestressed carbon fiber plate anchoring device is characterized in that a first connecting device (10) is arranged on the fixed end anchoring bottom plate (3), a fixed end anchoring device (1) is connected in the first connecting device (10) in a matching manner, a second connecting device (11) is arranged on the tensioning end anchoring bottom plate (4), a tensioning end anchoring device (2) is connected in the second connecting device (11) in a matching manner, and clamping areas for clamping a prestressed carbon fiber plate (7) are arranged on the fixed end anchoring device (1) and the tensioning end anchoring device (2);
one end of the first connecting device (10) far away from the second connecting device extends out of the fixed end anchoring baseplate along the direction that the first connecting device (10) and the second connecting device (11) are far away from each other;
the first connecting device (10) and the second connecting device (11) are both stepped holes;
in the cross section of the first connecting device (10), the width of one end of the first connecting device (10) close to the surface of the reinforced structure is larger than that of the other end of the first connecting device (10) on the cross section;
in the cross section of the second connecting means (11), the width of the end of the second connecting means (11) close to the surface of the structure to be reinforced is greater than the width of the other end of the second connecting means (11) in the cross section.
2. The large-tonnage prestressed carbon fiber plate anchoring device according to claim 1, wherein the fixed-end anchoring device (1) comprises a fixed-end upper anchoring plate (5) and a fixed-end lower anchoring plate, the two corresponding side edges of the fixed-end lower anchoring plate are step-shaped and matched with the two corresponding side edges of the first connecting device (10), and the fixed-end upper anchoring plate (5) is fixedly arranged on the fixed-end lower anchoring plate through the first fastening device.
3. The large-tonnage prestressed carbon fiber plate anchoring device according to claim 2, wherein the tension-end anchoring device (2) comprises a tension-end upper anchoring plate (12) and a tension-end lower anchoring plate, two corresponding side edges of the tension-end lower anchoring plate are step-shaped and matched with two corresponding side edges of the second connecting device (11), and the tension-end upper anchoring plate (12) is fixedly arranged on the fixed-end lower anchoring plate through the second fastening device.
4. The large-tonnage prestressed carbon fiber plate anchoring device according to claim 3, wherein the clamping area on the fixed-end anchoring device (1) is provided between the fixed-end upper anchor plate (5) and the fixed-end lower anchor plate, the clamping area being a first clamping area;
the first fastening device comprises a plurality of high-strength fastening bolts (8), and the high-strength fastening bolts (8) are respectively and correspondingly arranged on two sides of the first clamping area.
5. The large-tonnage prestressed carbon fiber plate anchoring device according to claim 4, wherein the clamping area on the tension end anchoring device (2) is provided between the tension end upper anchor plate (12) and the tension end lower anchor plate, and the clamping area is a second clamping area;
the second fastening device also comprises a plurality of high-strength fastening bolts (8), and the high-strength fastening bolts (8) are respectively and correspondingly arranged on two sides of the second clamping area.
6. The large-tonnage prestressed carbon fiber plate anchoring device as recited in claim 5, wherein friction force increasing structures are provided on both the lower surface of the fixed-end upper anchor plate (5) and the upper surface of the fixed-end lower anchor plate in the first clamping area;
and friction force increasing structures are arranged on the lower surface of the upper anchor plate (12) of the tensioning end and the upper surface of the lower anchor plate of the tensioning end in the second clamping area.
7. The large-tonnage prestressed carbon fiber plate anchoring device as recited in claim 6, wherein said friction force increasing structure is a grid-like groove, the depth of each groove is 1mm, and the width of each groove is 4-6 mm.
8. The large-tonnage prestressed carbon fiber plate anchoring device as recited in claim 7, wherein the number of the high-strength fastening bolts connecting the fixed-end upper anchor plate and the fixed-end lower anchor plate and the number of the high-strength fastening bolts connecting the tensile-end upper anchor plate and the tensile-end lower anchor plate are sixteen;
the distance between two adjacent high-strength fastening bolts (8) positioned on the same side of the first clamping area is 40mm, and the distance between two corresponding high-strength fastening bolts (8) positioned on two sides of the first clamping area is 74 mm;
the distance between two adjacent high-strength fastening bolts (8) on the same side of the second clamping area is 40mm, and the distance between two corresponding high-strength fastening bolts (8) on two sides of the second clamping area is 74 mm.
9. The large-tonnage prestressed carbon fiber plate anchoring device according to any one of claims 1-8, characterized in that said first connecting means (10) are provided in two, two first connecting means (10) are arranged in parallel with each other, and the lengths of the two first connecting means (10) are equal;
the number of the second connecting devices (11) is two, the two second connecting devices (11) are arranged in parallel, and the lengths of the two second connecting devices (11) are equal;
the distance between the two first connecting means (10) is equal to the distance between the two second connecting means (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121322439.8U CN215925725U (en) | 2021-06-15 | 2021-06-15 | Large-tonnage prestressing force carbon fiber plate anchor |
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| CN202121322439.8U CN215925725U (en) | 2021-06-15 | 2021-06-15 | Large-tonnage prestressing force carbon fiber plate anchor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908688A (en) * | 2022-06-24 | 2022-08-16 | 广州隧华智慧交通科技有限公司 | High-durability maintenance-free bridge pre-reinforcing structure and construction device thereof |
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2021
- 2021-06-15 CN CN202121322439.8U patent/CN215925725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908688A (en) * | 2022-06-24 | 2022-08-16 | 广州隧华智慧交通科技有限公司 | High-durability maintenance-free bridge pre-reinforcing structure and construction device thereof |
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Address after: Building C6, northwest headquarters base, fish Chemical Industrial Park, 58 Keji West Road, Yanta District, Xi'an City, Shaanxi Province, 710077 Patentee after: Shaanxi Traffic Control New Materials Co.,Ltd. Patentee after: Shaanxi Traffic Control Kaida Road and Bridge Engineering Construction Co.,Ltd. Address before: Building C6, northwest headquarters base, fish Chemical Industrial Park, 58 Keji West Road, Yanta District, Xi'an City, Shaanxi Province, 710077 Patentee before: SHAANXI JIAOKE NEW MATERIAL CO.,LTD. Patentee before: SHAANXI KAIDA HIGHWAY BRIDGE CONTRUCTION CO.,LTD. |