CN216766866U - Detachable prestressed carbon fiber plate anchoring device - Google Patents
Detachable prestressed carbon fiber plate anchoring device Download PDFInfo
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- CN216766866U CN216766866U CN202121966959.2U CN202121966959U CN216766866U CN 216766866 U CN216766866 U CN 216766866U CN 202121966959 U CN202121966959 U CN 202121966959U CN 216766866 U CN216766866 U CN 216766866U
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Abstract
The utility model discloses a detachable prestressed carbon fiber plate anchoring device, and belongs to the technical field of carbon fiber plate anchoring. It comprises a carbon fiber plate; the two wedge-shaped anchorage devices are respectively clamped at two ends of the carbon fiber plate and are detachably connected with the bottom surface of the reinforced structural member; the steel fasteners are arranged between the two wedge-shaped anchors, any one of the steel fasteners is buckled with the carbon fiber plate and is detachably connected with the bottom surface of the reinforced structural member, so that the carbon fiber plate between each pair of the steel fasteners is tensioned to have certain tension; and the jack is fixedly connected with one end of the carbon fiber plate. The tension anchor can be unloaded step by step and anchored step by step when in use, and meanwhile, the tension anchor can be repeatedly used, so that the cost is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of carbon fiber plate anchoring, and particularly relates to a detachable prestressed carbon fiber plate anchoring device.
Background
The prestressed carbon fiber plate reinforcing system is widely applied to flexural reinforcement of structural members, and the prestressed carbon fiber plate can replace steel strands to be tensioned in vitro, so that the prestressed carbon fiber plate reinforcing system has the effects of improving the bending resistance bearing capacity of the members, adjusting the stress state of the members, controlling concrete cracks and controlling the deformation of the members. The stretching anchorage of the prestressed carbon fiber plate depends on an anchoring device, and the existing anchoring systems comprise a flat plate anchorage device, a wedge-shaped anchorage device, a wave-shaped anchorage device and the like. After tensioning is finished, the jack and the stop block are removed, but the anchorage device still needs to be left on the component and cannot be detached for reuse.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
Aiming at the problems in the prior art, the utility model provides a detachable prestressed carbon fiber plate anchoring device, after tensioning is completed, a carbon fiber plate can be fixed by steel buckles, and a tensioning anchorage device can be detached for repeated use.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
Can dismantle prestressing force carbon fiber plate anchor includes:
a carbon fiber sheet;
the two wedge-shaped anchorage devices are respectively clamped at two ends of the carbon fiber plate and are detachably connected with the bottom surface of the reinforced structural member;
the steel fasteners are arranged between the two wedge-shaped anchors, any one of the steel fasteners is buckled with the carbon fiber plate and is detachably connected with the bottom surface of the reinforced structural member, so that the carbon fiber plate between each pair of the steel fasteners is tensioned to have certain tension;
and the jack is fixedly connected with one end of the carbon fiber plate.
The preferable technical scheme is as follows:
the detachable prestressed carbon fiber plate anchoring device has the advantages that the carbon fiber plate is provided with a plurality of sections along the length direction.
In the above detachable prestressed carbon fiber plate anchoring device, the number s of segments of the carbon fiber plate has the following relationship:
s＝P/(k*a)+1，0.4≤k≤0.7；
in the above formula, s is the number of segments of the prestressed carbon plate, P is the specified tonnage for tensioning the prestressed carbon plate, a is the tensioning tension of the carbon fiber plate between each pair of steel fasteners, and k is the empirical coefficient.
The detachable prestressed carbon fiber plate anchoring device is characterized in that the steel fasteners are sequentially arranged on the segments of the symmetrical carbon fiber plates from the middle to the two sides.
According to the detachable prestressed carbon fiber plate anchoring device, the anchor bolts are arranged at two ends of each steel fastener, and each steel fastener is detachably connected with the bottom surface of the reinforced structural member through the bolts.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
according to the detachable prestressed carbon fiber plate anchoring device, the prestressed carbon plate is segmented, and the segmentation method is jointly determined by the total tension tonnage and the steel fastener anchoring force; the steel fasteners are used for anchoring, so that the steel fasteners can be unloaded step by step and anchored step by step when in use, uniform stress of each steel fastener is ensured, only the steel fasteners and the carbon plates are reserved finally, and the influence on the appearance of the reinforced member is small; simultaneously, the tensioning anchor can be repeatedly used, and the cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a detachable prestressed carbon fiber plate anchoring device according to embodiment 1 of the present invention;
in the figure: 100. a carbon fiber sheet; 200. a wedge-shaped anchor; 300. a steel fastener; 400. a jack; 500. a reinforced structural member; 600. an anchor bolt.
Detailed Description
The utility model is further described with reference to specific embodiments and the accompanying drawings.
Example 1
As shown in fig. 1, the present embodiment provides a detachable prestressed carbon fiber plate 100 anchoring device, including:
a carbon fiber sheet 100, the carbon fiber sheet 100 having a plurality of segments along a length direction;
the two wedge-shaped anchors 200 are respectively clamped at two ends of the carbon fiber plate 100 and detachably connected with the bottom surface of the reinforced structural member 500;
the pair of steel fasteners 300 are arranged, the steel fasteners 300 are arranged between the two wedge-shaped anchors 200, any one of the steel fasteners 300 is fastened on the carbon fiber plate 100 and detachably connected with the bottom surface of the reinforced structural member 500, and more specifically, the steel fasteners 300 are sequentially arranged on the segments of the symmetrical carbon fiber plate 100, so that the carbon fiber plate 100 between each pair of the steel fasteners 300 is tensioned with a certain tension;
and the jack 400 is fixedly connected with one end of the carbon fiber plate 100.
In a specific connection manner, both ends of each steel fastener 300 are provided with anchors 600, and each steel fastener 300 is detachably connected to the bottom surface of the reinforced structural member 500 by bolts.
It is noted that, in the present embodiment, the steel fastener 300 is involved in the anchoring device in order to apply the tensile force required for anchoring to the carbon fiber sheet 100 in advance by the jack 400. Utilize steel fastener 300 to anchor, can uninstall step by step when using, anchor step by step. Therefore, in an actual assembly scheme, a pair of steel fasteners 300 can be arranged at the most middle position of the carbon fiber plate 100; the steel fasteners 300 are sequentially arranged toward the outer sections, instead of arranging a large number of steel fasteners 300 on the carbon fiber plate 100 at the same time.
It should be noted that, considering that the steel fasteners 300 arranged in pairs are used to maintain the tension between the carbon fiber plates 100 between each pair of steel fasteners 300 in the present embodiment, the influence of the steel fasteners 300 on the carbon fiber plates 100 itself needs to be considered. Therefore, the steel fastener 300 in this embodiment may be selected as a single-sided channel steel fastener, and the corners of the single-sided channel steel fastener are all rounded, so that the contact surface between the single-sided channel steel fastener and the carbon fiber plate 100 is a rough surface, which avoids the influence of the steel fastener 300 on the performance of the carbon fiber plate 100; secondly, the friction force between the steel fasteners 300 and the carbon fiber plate 100 can be increased, and the tensile force of the carbon fiber plate 100 between the steel fasteners 300 which are paired can be better kept.
To further explain the anchoring process of the above-described detachable prestressed carbon fiber sheet 100 anchoring device, a specific anchoring process will be described below.
S1, fixing the prestressed carbon plate on the reinforced member by adopting a wedge-shaped anchorage device 200, and tensioning to a specified tonnage by adopting a jack 400;
s2, segmenting the prestressed carbon plate;
s3, selecting a prestressed carbon fiber plate 100 segment as an anchoring segment;
s4, fixing the selected segments of the prestressed carbon fiber plate 100 through steel fasteners 300, and applying a certain anchoring force to the segmented prestressed carbon fiber plate 100;
s5, unloading the tensioning tension equivalent to the anchoring force by the jack 400;
s6, taking another steel fastener 300, and selecting the unfixed segment of the prestressed carbon fiber plate 100 adjacent to the segment of the prestressed carbon fiber plate 100 as a new anchoring segment;
and S7, repeating the steps S4-S6 until the tensioning force of the jack 400 is completely unloaded.
In order to enable the tensioning anchorage device to be reusable, the tensioning tension of the prestressed carbon plate on the reinforced member is converted into that provided by the steel fastener, and by arranging the plurality of steel fasteners, the uniform stress on each prestressed carbon fiber plate segment is ensured; in the anchoring mode, unloading step by step and anchoring step by step, the tensioning effect of the prestressed carbon fiber plate can be ensured to be consistent front and back compared with the mode of directly unloading the tensioning force of the jack, and loss can not occur.
Example 2
Substantially the same as in example 1. Except that the present embodiment further defines the number of segments of the carbon fiber sheet.
The number of segments s of the carbon fiber sheet has the following relationship:
s＝P/(k*a)+1，0.4≤k≤0.7；
in the above formula, s is the number of segments of the prestressed carbon plate, P is the specified tonnage for tensioning the prestressed carbon plate, a is the tensioning tension of the carbon fiber plate between each pair of steel fasteners, and k is the empirical coefficient.
In the embodiment, k is set to be 0.4-0.7, preferably 0.5. The purpose of referring to the k value in this embodiment is to ensure a safety redundancy of the steel fastener by the k value. When the k value is too small, the segmentation of the prestressed carbon fiber plate is too much, so that the anchoring method in the embodiment is more complicated; when the k value is too large, when any one steel fastener has a problem in connection or the structure of the steel fastener has a quality problem, the anchoring force applied by the steel fastener with the problem cannot be adjusted.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. Can dismantle prestressing force carbon fiber plate anchor, its characterized in that includes:
a carbon fiber sheet;
the two wedge-shaped anchorage devices are respectively clamped at two ends of the carbon fiber plate and are detachably connected with the bottom surface of the reinforced structural member;
the steel fasteners are arranged between the two wedge-shaped anchors, any one of the steel fasteners is buckled with the carbon fiber plate and is detachably connected with the bottom surface of the reinforced structural member, so that the carbon fiber plate between each pair of the steel fasteners is tensioned to form a tensile force;
and the jack is fixedly connected with one end of the carbon fiber plate.
2. The detachable prestressed carbon fiber plate anchoring device according to claim 1, wherein said carbon fiber plate has a plurality of segments along the length direction.
3. The carbon fiber plate anchoring device of claim 2, wherein the number of segments s of the carbon fiber plate has the following relationship:
s＝P/(k*a)+1，0.4≤k≤0.7；
in the above formula, s is the number of segments of the prestressed carbon plate, P is the specified tonnage for tensioning the prestressed carbon plate, a is the tensioning tension of the carbon fiber plate between each pair of steel fasteners, and k is the empirical coefficient.
4. The detachable prestressed carbon fiber plate anchoring device according to claim 2, wherein said steel fasteners are sequentially arranged on the segments of the symmetrical carbon fiber plate from the middle to both sides.
5. The detachable prestressed carbon fiber plate anchoring device according to claim 1, wherein each steel fastening member is provided with anchor bolts at both ends thereof, and each steel fastening member is detachably connected to the bottom surface of the reinforced structural member by means of bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121966959.2U CN216766866U (en) | 2021-08-20 | 2021-08-20 | Detachable prestressed carbon fiber plate anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121966959.2U CN216766866U (en) | 2021-08-20 | 2021-08-20 | Detachable prestressed carbon fiber plate anchoring device |
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| Publication Number | Publication Date |
|---|---|
| CN216766866U true CN216766866U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121966959.2U Active CN216766866U (en) | 2021-08-20 | 2021-08-20 | Detachable prestressed carbon fiber plate anchoring device |
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| Country | Link |
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| CN (1) | CN216766866U (en) |
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2021
- 2021-08-20 CN CN202121966959.2U patent/CN216766866U/en active Active
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