Prestressed carbon fiber rib

Abstract

The utility model discloses a prestressed carbon fiber rib, which comprises a fixing anchorage device, a tensioning anchorage device, a tensioning fixing seat and a rib material, the fixing anchorage device and the tensioning anchorage device are respectively provided with a fixing component, two ends of the rib material are respectively fixed on the fixing anchorage device and the tensioning anchorage device through the two fixing components, two sides of the tensioning anchorage device are connected with tensioning rods, and the tensioning rods are connected with the tensioning anchorage device. The ends, close to the fixing anchorage device, of the tensioning rods are in threaded connection with first fastening nuts, the tensioning rods are in sliding connection with the two sides of the tensioning fixing base, the tensioning fixing base is connected with a jack, the tail ends of the two tensioning rods are connected with an end plate, the jack abuts against the end plate, and the tensioning rods are further in threaded connection with second fastening nuts and third fastening nuts. The second fastening nut is located between the tensioning anchorage device and the end plate, and the third fastening nut is located on the side, away from the jack, of the end plate. The carbon fiber ribs are locked and fixed through the fixing components, the carbon fiber ribs are prevented from tilting, breaking and flying out, and the installation mode is simpler and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber, in particular to a prestressed carbon fiber tendon. Background Art

[0002] In bridge construction, whether it is a concrete structure, a steel structure or a steel-concrete composite structure, the bridge deck is usually a reinforced concrete slab structure. In the past 20 years, these bridge structural systems have exposed some problems, the most serious of which is the corrosion of steel bars or steel, which leads to premature structural degradation or insufficient function. The problem of steel bar corrosion is particularly serious for bridge decks due to the small thickness of the protective layer, the direct action of deicing salt on its surface, and the easy cracking caused by long-term traffic loads. Therefore, bridge decks with insufficient structural functions need to be reinforced.

[0003] The existing reinforcement device is to clamp the two ends of the carbon fiber reinforcement through a conical cavity anchor, one of which is fixed, and the other can be moved and tensioned by external force. Generally, the tension anchor is driven by a jack to tighten the carbon fiber reinforcement. In this way, two anchor plates are required to clamp the carbon fiber reinforcement installed in the conical sleeve, and after the anchor plates are clamped and installed, several bolts are required to fix them, which is inconvenient to install. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a prestressed carbon fiber reinforcement to solve the problems mentioned in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A prestressed carbon fiber tendon comprises a fixed anchor, a tensioning anchor, a tensioning fixing seat and a tendon material, wherein the fixed anchor and the tensioning anchor are both provided with fixing components, and the two ends of the tendon material are respectively fixed to the fixed anchor and the tensioning anchor by the two fixing components, and tensioning rods are connected to the two sides of the tensioning anchor, and a first fastening nut is threadedly connected to the end of the tensioning rod close to the fixed anchor, and the tensioning rod is slidably connected to the two sides of the tensioning fixing seat, and a jack is connected to the tensioning fixing seat, and the ends of the two tensioning rods are connected to end plates, and the jack rests on the end plates, and a second fastening nut and a third fastening nut are also threadedly connected to the tensioning rod, and the second fastening nut is located between the tensioning anchor and the end plate, and the third fastening nut is located on the side of the end plate away from the jack.

[0007] Preferably, the reinforcement material includes carbon fiber reinforcement and sleeves fixed to both ends of the carbon fiber reinforcement, the two sleeves are respectively fixed to the fixed anchor and the tension anchor through fixing components, and the interior of the sleeve is conical.

[0008] In the above technical solution, glue is poured or injected into the inner cavity of the casing to fix the carbon fiber reinforcement, so that the anchoring force of the carbon fiber reinforcement is more excellent and the tensioning force is further improved.

[0009] Preferably, the fixing member includes a clamp and connecting plates integrally formed at both ends of the clamp, connecting holes are provided on the connecting plates, anchor holes matching the connecting holes are provided on the fixing anchor and the tensioning anchor, and the clamp is connected to the fixing anchor and the tensioning anchor by bolts.

[0010] The above technical solution places the sleeves at both ends on the fixed anchor and the tension anchor respectively, and then fixes the clamps by bolts so that the clamps press the sleeves at both ends tightly against the fixed anchor and the tension anchor, thereby completing the fixation of the reinforcement.

[0011] Preferably, the fixing member includes a fixing sleeve fixedly connected to the fixing anchor or the tensioning anchor, the lower part of the fixing sleeve is a through and arc-shaped fixing hole, the upper inner side of the fixing sleeve is provided with a cavity, the top of the fixing sleeve is rotatably connected with a shaft rod, the outer end of the shaft rod is connected with a handle, the inner end of the shaft rod extends into the cavity, and the extended end is connected with a first bevel gear, two bearing plates are provided in the cavity, the two ends in the cavity are rotatably connected with a horizontal transmission rod, the other end of the transmission rod is rotatably connected with the bearing plates on each side, the opposite ends of the two transmission rods are connected with a second bevel gear, the first bevel gear is meshed with the two second bevel gears, the opposite ends of the two transmission rods are connected with a third bevel gear, the two ends in the cavity are rotatably connected with a vertical positioning sleeve, the outer wall of the positioning sleeve is connected with a fourth bevel gear meshed with the third bevel gear, the positioning sleeve is internally threaded with a telescopic rod, the lower end of the telescopic rod is connected with an arc-shaped pressing plate, the pressing plate is located in the fixing hole, the pressing plate is connected with a guide rod, and the guide rod is slidably connected to the bottom of the cavity.

[0012] The above technical scheme passes the sleeves at both ends through the fixing sleeves on the fixing anchor and the tensioning anchor respectively, and then rotates the handle on the fixing sleeve, the handle drives the shaft rod to rotate, the shaft rod drives the two transmission rods to rotate through the cooperation of the first bevel gear and the two second bevel gears, the transmission rod drives the positioning sleeve to rotate through the cooperation of the third bevel gear and the fourth bevel gear. Since the positioning sleeve is threadedly connected to the telescopic rod, the lower end of the positioning sleeve is connected to the pressure plate, and the pressure plate is slidably connected to the bottom of the cavity through the guide rod, the positioning sleeve will drive the telescopic rod to move downward during rotation, so that the pressure plate will press the reinforcement material tightly into the fixing sleeve. There is no need to install a large number of bolts, it is easy to use, and by turning a handle, the two pressure plates can be driven to descend to achieve the clamping effect, thereby improving the fixing efficiency of the reinforcement material.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The carbon fiber ribs are locked and fixed by fixing components to prevent them from warping, breaking and flying out, making the installation method simpler and more efficient.

[0015] After the prestressing is completed, the fixed anchor, tension anchor, tension rod, end plate and tension fixing seat can be removed and reused, reducing material costs;

[0016] By turning the handle, the pressure plate can press the reinforcement material tightly into the fixing sleeve. There is no need to install a large number of bolts, and the installation is convenient. Moreover, by turning a handle, the two pressure plates can be driven down to achieve the pressing effect, thereby improving the fixing efficiency of the reinforcement material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 is a schematic diagram of a first embodiment of a fixing member;

[0019] Figure 3 is a schematic diagram of a second embodiment of a fixing member;

[0020] Figure 4 for Figure 3 A cross-sectional view of

[0021] Figure 5 is a side view of a second embodiment of a fixing member;

[0022] In the figure: 1-fixed anchor, 2-tension anchor, 3-tension fixing seat, 4-reinforcement material, 401-carbon fiber reinforcement, 402-sleeve, 5-fixed member, 501-clamp, 502-connecting plate, 503-connecting hole, 504-fixing sleeve, 505-fixing hole, 506-cavity, 507-axis rod, 508-handle, 509-first bevel gear, 510-bearing plate, 511-transmission rod, 512-second bevel gear, 513-third bevel gear, 514-positioning sleeve, 515-fourth bevel gear, 516-telescopic rod, 517-pressure plate, 518-guide rod, 6-tension rod, 7-first fastening nut, 8-jack, 9-end plate, 10-second fastening nut, 11-third fastening nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1A prestressed carbon fiber tendon comprises a fixed anchor 1, a tension anchor 2, a tension fixing seat 3 and a tendon 4, wherein the fixed anchor 1 and the tension anchor 2 are both provided with a fixing component 5, and the two ends of the tendon are respectively fixed to the fixed anchor 1 and the tension anchor 2 by the two fixing components 5, and the two sides of the tension anchor 2 are connected with a tension rod 6, and the end of the tension rod 6 close to the fixed anchor is threadedly connected with a first fastening nut 7, and the tension rod 6 is slidably connected to the two sides of the tension fixing seat 3, and a jack 8 is connected to the tension fixing seat 3, and the ends of the two tension rods 6 are connected with an end plate 9, and the jack 8 rests on the end plate 9, and the tension rod 6 is also threadedly connected with a second fastening nut 10 and a third fastening nut 11, and the second fastening nut 10 is located between the tension anchor 2 and the end plate 9, and the third fastening nut 11 is located on the side of the end plate 9 away from the jack.

[0025] The reinforcement material 4 includes a carbon fiber reinforcement 401 and sleeves 402 fixed to both ends of the carbon fiber reinforcement. The two sleeves 402 are respectively fixed to the fixing anchor 1 and the tensioning anchor 2 through a fixing member 5. The interior of the sleeve 402 is conical. The inner cavity of the sleeve 402 is filled or injected with glue to fix the carbon fiber reinforcement 401, so that the anchoring force of the carbon fiber reinforcement 401 is more excellent and the tensioning force is further improved.

[0026] During installation, the sleeves 402 are fixed at both ends of the carbon fiber reinforcement 401, and then the two sleeves 402 are fixed to the fixed anchor 1 and the tension anchor 2 through the fixing member 5, and the first fastening nut 7 and the third fastening nut 11 are tightened. Then, the end plate 9 is pushed by the jack 8, and the end plate 9 pulls the tensioning rod 6. The tensioning rod 6 pulls the reinforcement 4 through the tensioning anchor 2 and tensions it to the specified load. Finally, the second fastening nut 10 is tightened to press it tightly against the end faces on both sides of the tensioning fixing seat 3.

[0027] like Figure 2 As shown, it is a first embodiment of the fixing member:

[0028] The fixing member 5 includes a clamp 501 and a connecting plate 502 integrally formed at both ends of the clamp, a connecting hole 503 is provided on the connecting plate 502, and anchor holes matching the connecting holes are provided on both the fixing anchor 1 and the tensioning anchor 2, and the clamps 501 in the two fixing members are respectively connected to the fixing anchor 1 and the tensioning anchor 2 by bolts. When the reinforcement 4 is fixed by this embodiment, the sleeves 402 at both ends of the carbon fiber reinforcement 401 are respectively placed on the fixing anchor 1 and the tensioning anchor 2, and then the clamp 501 is fixed by bolts, so that the clamp 501 presses the sleeves 402 at both ends tightly against the fixing anchor 1 and the tensioning anchor 2, thereby completing the fixing of the reinforcement.

[0029] like Figure 3 , Figure 4 , Figure 5 As shown, a second embodiment of the fixing member is shown:

[0030] The fixing member 5 includes a fixing sleeve 504 fixedly connected to the fixing anchor or the tensioning anchor, the lower part of the fixing sleeve 504 is a through and arc-shaped fixing hole 505, the upper inner side of the fixing sleeve 504 is provided with a cavity 506, the top of the fixing sleeve 504 is rotatably connected with a shaft 507, the outer end of the shaft 507 is connected with a handle 508, the inner end of the shaft 507 extends into the cavity 506, and the extended end is connected with a first bevel gear 509, two bearing plates 510 are provided in the cavity 506, and the two ends of the cavity 506 are rotatably connected with a transverse transmission rod 511, and the other end of the transmission rod 511 is rotatably connected with the bearing plate 510 on each side, and the two transmission rods 511 are rotatably connected. The opposite end of the rod 511 is connected to the second bevel gear 512, the first bevel gear 509 is meshed with the two second bevel gears 512, the opposite ends of the two transmission rods 511 are connected to the third bevel gear 513, the two ends in the cavity 506 are rotatably connected with vertical positioning sleeves 514, the outer wall of the positioning sleeve 514 is connected to the fourth bevel gear 515 meshed with the third bevel gear 513, the positioning sleeve 514 is threadedly connected to the telescopic rod 516, the lower end of the telescopic rod 516 is connected to the arc-shaped pressing plate 517, the pressing plate 517 is located in the fixing hole 505, the pressing plate 517 is connected to the guide rod 518, and the guide rod 518 is slidably connected to the bottom of the cavity 506.

[0031] When fixing the reinforcement 4 by this embodiment, the sleeves 402 at both ends are respectively passed through the fixing sleeves 504 on the fixing anchor 1 and the tensioning anchor 2, and then the handle 508 is turned to drive the shaft rod 507 to rotate. The shaft rod 507 drives the two transmission rods 511 to rotate through the cooperation of the first bevel gear 509 and the two second bevel gears 512. The transmission rod 511 drives the positioning sleeve 514 to rotate through the cooperation of the third bevel gear 513 and the fourth bevel gear 515. Since the positioning sleeve 514 is threadedly connected with the telescopic rod 516, the lower end of the positioning sleeve 514 is connected to the pressing plate 517, and the pressing plate 517 is slidably connected to the bottom of the cavity 506 through the guide rod 518. Therefore, during the rotation of the positioning sleeve 514, the telescopic rod 516 will be driven to move downward, so that the pressing plate 517 presses the sleeve 402 tightly in the fixing sleeve 504. There is no need to install more bolts, which is easy to use. Moreover, by turning a handle, the two pressing plates can be driven to descend to achieve the pressing effect, thereby improving the fixing efficiency of the reinforcement.

[0032] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prestressed carbon fiber tendon, comprising a fixing anchor (1), a tensioning anchor (2), a tensioning fixing seat (3) and a tendon material (4), characterized in that: The fixed anchor (1) and the tension anchor (2) are both provided with a fixing component (5), and the two ends of the reinforcement are respectively fixed to the fixed anchor (1) and the tension anchor (2) by the two fixing components (5). The two sides of the tension anchor (2) are connected with tension rods (6), and the end of the tension rod (6) close to the fixed anchor is threadedly connected with a first fastening nut (7). The tension rod (6) is slidably connected to the two sides of the tension fixing seat (3), and the tension fixing seat (3) is connected with a jack (8). The ends of the two tension rods (6) are connected with an end plate (9), and the jack (8) rests on the end plate (9). The tension rod (6) is also threadedly connected with a second fastening nut (10) and a third fastening nut (11), and the second fastening nut (10) is located between the tension anchor (2) and the end plate (9), and the third fastening nut (11) is located on the side of the end plate (9) away from the jack.

2. The prestressed carbon fiber reinforcement according to claim 1, characterized in that: The reinforcement material (4) comprises a carbon fiber reinforcement (401) and sleeves (402) fixed to both ends of the carbon fiber reinforcement, and the two sleeves (402) are respectively fixed to the fixing anchor (1) and the tensioning anchor (2) through fixing components (5).

3. A prestressed carbon fiber tendon according to claim 2, characterized in that: The fixing member (5) comprises a clamp (501) and connecting plates (502) integrally formed at both ends of the clamp, a connecting hole (503) is provided on the connecting plate (502), and anchor holes matching the connecting holes are provided on the fixing anchor (1) and the tensioning anchor (2), and the clamps (501) in the two fixing members are respectively connected to the fixing anchor (1) and the tensioning anchor (2) by bolts.

4. The prestressed carbon fiber reinforcement according to claim 2, characterized in that: The fixing member (5) comprises a fixing sleeve (504) fixedly connected to a fixing anchor or a tensioning anchor, the lower part of the fixing sleeve (504) is a through and arc-shaped fixing hole (505), the upper inner side of the fixing sleeve (504) is provided with a cavity (506), the top of the fixing sleeve (504) is rotatably connected with a shaft (507), the outer end of the shaft (507) is connected with a handle (508), the inner end of the shaft (507) extends into the cavity (506), and the extended end is connected with a first bevel gear (509), two bearing plates (510) are provided in the cavity (506), the two ends in the cavity (506) are rotatably connected with a transverse transmission rod (511), the other end of the transmission rod (511) is rotatably connected to the bearing plate (510) on one side thereof, and the two transmission rods (511) are rotatably connected to the bearing plate (510) on one side thereof. The opposite end of the two transmission rods (511) is connected to a second bevel gear (512), the first bevel gear (509) is meshed with the two second bevel gears (512), the opposite ends of the two transmission rods (511) are connected to a third bevel gear (513), the two ends in the cavity (506) are rotatably connected to a vertical positioning sleeve (514), the outer wall of the positioning sleeve (514) is connected to a fourth bevel gear (515) meshed with the third bevel gear (513), the positioning sleeve (514) is internally threadedly connected to a telescopic rod (516), the lower end of the telescopic rod (516) is connected to an arc-shaped pressing plate (517), the pressing plate (517) is located in the fixing hole (505), the pressing plate (517) is connected to a guide rod (518), and the guide rod (518) is slidably connected to the bottom of the cavity (506).

5. The prestressed carbon fiber tendon according to claim 2, characterized in that: The interior of the sleeve (402) is tapered.

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