阅读说明：本技术 一种预应力碳纤维板锚具系统 (prestressed carbon fiber plate anchorage device system ) 是由 罗仕刚 于 2019-09-18 设计创作，主要内容包括：本申请公开了一种预应力碳纤维板锚具系统,包括设置于待加固的混凝土基面上的长条形碳纤维板,碳纤维板的一端设置有固定端锚板,另一端设置有张拉端锚板,固定端锚板内设置有固定锚头,固定锚头通过螺栓与安装板固定连接,固定锚头内设置有第一固定机构,张拉端锚板上设置有张拉机构。本发明的预应力碳纤维板锚具系统可现场调节碳板尺寸,施工作业灵活,对原混凝土结构损伤小,且便于碳纤维板固定,结构强度更高。(the application discloses prestressing force carbon fiber plate ground tackle system, including setting up the rectangular shape carbon fiber plate on treating reinforced (rfd) concrete base face, the one end of carbon fiber plate is provided with the stiff end anchor slab, and the other end is provided with the stretch-draw end anchor slab, is provided with fixed anchor head in the stiff end anchor slab, and fixed anchor head passes through bolt and mounting panel fixed connection, is provided with first fixed establishment in the fixed anchor head, is provided with straining mechanism on the stretch-draw end anchor slab. The prestressed carbon fiber plate anchor system can adjust the size of the carbon plate on site, is flexible in construction operation, has small damage to the original concrete structure, is convenient for fixing the carbon fiber plate and has higher structural strength.)

1. A prestressed carbon fiber plate anchorage system is characterized by comprising a strip-shaped carbon fiber plate (11) arranged on a concrete base surface to be reinforced; one end of the carbon fiber plate is provided with a fixed end anchor plate (12), and the other end is provided with a tensioning end anchor plate (13);

the fixed end anchor plate (12) comprises first fixed plates (21) symmetrically arranged on two sides of the carbon fiber plate (11) in the length direction; the adjacent sides of the two first fixing plates (21) are fixedly provided with connecting plates (22); an installation plate (23) is arranged between the two connecting plates (22); a fixing groove (24) is formed between the surface of the mounting plate (23) close to the concrete base surface and the two connecting plates (22); a fixed anchor head (14) is arranged in the fixed groove (24); the fixed anchor head (14) is fixedly connected with the mounting plate (23) through a bolt; a first open slot (25) is formed in one side, away from the carbon fiber plate (11), of the mounting plate (23) and located on the fixed anchor head (14); two reinforcing steel plates (26) are arranged on the surface, away from the concrete base surface, of the mounting plate (23) along the length direction of the carbon fiber plate (11); a first fixing mechanism (15) is arranged in the fixed anchor head (14);

the tensioning end anchor plate (13) comprises a U-shaped sliding chute (31) buckled on the concrete base surface; the sliding groove (31) is arranged along the length direction of the carbon fiber plate (11); the sliding grooves (31) are symmetrically and fixedly provided with second fixing plates (32) along two sides of the length direction of the carbon fiber plate (11); a support plate (33) is fixedly arranged at the end part of the chute (31) far away from the carbon fiber plate (11); and a second open slot (34) is formed in the wall surface of the sliding groove (31) opposite to the concrete base surface along the length direction of the carbon fiber plate (11).

a tensioning mechanism (16) is arranged on the tensioning end anchor plate (13); the tensioning mechanism (16) comprises a tensioning anchor head (61) which is arranged in the sliding groove (31) in a sliding manner; the end part, far away from the carbon fiber plate (11), of the tensioning anchor head (61) is fixedly provided with two tensioning screws (62) along the direction vertical to the carbon fiber plate (11); a tensioning baffle (63) is arranged on one side, away from the sliding groove (31), of the supporting plate (33); the two tensioning screws (62) can slidably penetrate through the support plate (33) and the tensioning baffle (63); a jack (64) is fixedly arranged between the support plate (33) and the tensioning baffle (63); one sides, close to the tensioning baffle (63), of the supporting plates (61) on the two tensioning screws (62) are sleeved with first nuts (65) in a threaded manner; a second nut (66) is sleeved on one side, away from the support plate (33), of the tensioning baffle plate (63) on each of the two tensioning screws (62) in a threaded manner; and a second fixing mechanism (17) is arranged between the concrete base surface and the two tensioning screws (62) in the tensioning anchor head (61).

2. the prestressed carbon fiber sheet anchorage system of claim 1, wherein said first fixing means (15) comprises a first wedge-shaped channel (51) disposed along a length of said carbon fiber sheet (11); the height of the first wedge-shaped channel (51) gradually increases in a direction away from the carbon fiber plate (11); the end part of the carbon fiber plate (11) close to the fixed anchor head (14) extends into the first wedge-shaped channel (51); first wedge plugs (52) are symmetrically arranged on two sides of the carbon fiber plate (11) in the first wedge-shaped channel (51); a first tooth-shaped structure (53) is arranged on the wall surface of the first wedge plug (52) which is attached to the carbon fiber plate (11);

The second fixing mechanism (17) comprises a second wedge-shaped channel (71) arranged along the length direction of the carbon fiber plate (11); the height of the second wedge-shaped channel (71) gradually increases in a direction away from the carbon fiber plate (11); the end part, close to the tensioning anchor head (61), of the carbon fiber plate (11) extends into the second wedge-shaped channel (71); second wedge plugs (72) are symmetrically arranged on two sides of the carbon fiber plate (11) in the second wedge-shaped channel (71); and a second tooth-shaped structure (73) is arranged on the wall surface of the second wedge plug (72) jointed with the carbon fiber plate (11).

3. the system of claim 2, wherein the tension screw (62) is detachably and fixedly connected with the tension anchor head (61) through a threaded structure.

4. The prestressed carbon fiber plate anchor system according to claim 3, wherein a plurality of first fixing holes (27) are uniformly formed in the first fixing plate (21); the fixed end anchor plate (12) penetrates through the first fixing hole (27) through a bolt to be fixed on the concrete base surface;

A plurality of second fixing holes (35) are uniformly formed in the second fixing plate (32); the tensioning end anchor plate (13) penetrates through the second fixing hole (35) through a bolt to be fixed on the concrete base surface.

Technical Field

The present disclosure relates generally to the field of building reinforcement technology, and more particularly, to a prestressed carbon fiber plate anchor system.

background

The prestressed carbon fiber plate (referred to as a prestressed carbon plate for short) combines the advantages of light weight, high strength, corrosion resistance, fatigue resistance and the like of carbon fiber and the characteristic of actively applying prestress, and is widely applied to reinforcement, upgrading and transformation of building concrete. The prestressed carbon plate reinforcement not only has the advantages of reducing deflection deformation, actively sealing cracks and reducing internal stress of reinforced concrete, but also endows a reinforced building with higher ultimate load and shear stress, and improves the utilization rate of the carbon fiber plate and the concrete. The anchorage device is the core of the prestressed carbon plate and can effectively transfer the load borne by the carbon fiber plate to a reinforced building.

existing prestressing force carbon fiber plate ground tackle systems on the market are mostly for producer's customization length and assemble at the producer, and the length of carbon fiber plate is fixed, but can have the problem that actual dimension and design size have the deviation in actual work progress, and in case the deviation appears, need assemble again after tailorring carbon fiber plate, and the producer is kept secret from security and technique, generally can return former producer and install again, so efficiency is lower and increase the engineering volume.

in addition, current ground tackle system is when the construction, because the space of fixed carbon fiber board is less, very inconvenient to the fixed of carbon fiber board, and the structural strength of ground tackle is not enough, and the easy bending yield when applying stress. And the anchorage device needs to be buried in the concrete surface layer, so that the concrete slotting area is large, and the damage to the original concrete structure protective layer is large.

disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a prestressed carbon fiber plate anchor system which can adjust the size of a carbon plate on site, is flexible in construction operation, has small damage to the original concrete structure, is convenient for fixing the carbon fiber plate, and has higher structural strength.

The application provides a prestressed carbon fiber plate anchorage device system which comprises a strip-shaped carbon fiber plate arranged on a concrete base surface to be reinforced; one end of the carbon fiber plate is provided with a fixed end anchor plate, and the other end of the carbon fiber plate is provided with a tensioning end anchor plate;

The fixed end anchor plate comprises first fixed plates symmetrically arranged on two sides of the carbon fiber plate in the length direction; the adjacent sides of the two first fixing plates are fixedly provided with connecting plates; an installation plate is arranged between the two connection plates; a fixed groove is formed between the surface of the mounting plate close to the concrete base surface and the two connecting plates; a fixed anchor head is arranged in the fixed groove; the fixed anchor head is fixedly connected with the mounting plate through a bolt; a first open slot is formed in one side, away from the carbon fiber plate, of the fixing anchor head on the mounting plate; two reinforcing steel plates are arranged on the surface of the mounting plate, which is far away from the concrete base surface, along the length direction of the carbon fiber plate; a first fixing mechanism is arranged in the fixed anchor head;

The tensioning end anchor plate comprises a U-shaped chute buckled on a concrete base surface; the sliding groove is arranged along the length direction of the carbon fiber plate; the sliding chutes are symmetrically and fixedly provided with second fixing plates along two sides of the length direction of the carbon fiber plate; a support plate is fixedly arranged at the end part of the chute far away from the carbon fiber plate; and a second open slot is formed in the wall surface of the sliding groove, which is opposite to the concrete base surface, along the length direction of the carbon fiber plate.

a tensioning mechanism is arranged on the tensioning end anchor plate; the tensioning mechanism comprises a tensioning anchor head which is arranged in the sliding groove in a sliding manner; the end part of the tensioning anchor head far away from the carbon fiber plate is fixedly provided with two tensioning screws along the direction vertical to the carbon fiber plate; a tensioning baffle is arranged on one side of the supporting plate away from the sliding groove; the two tensioning screws can slidably penetrate through the supporting plate and the tensioning baffle; a jack is fixedly arranged between the supporting plate and the tensioning baffle; one sides of the two tensioning screws, which are positioned on the supporting plates and close to the tensioning baffle, are sleeved with first nuts in a threaded manner; a second nut is sleeved on one side of each of the two tensioning screws, which is far away from the support plate, of the tensioning baffle plate in a threaded manner; and a second fixing mechanism is arranged between the concrete base surface and the two tensioning screws in the tensioning anchor head.

preferably, the first fixing mechanism comprises a first wedge-shaped channel arranged along the length direction of the carbon fiber plate; the height of the first wedge-shaped channel is gradually increased along the direction far away from the carbon fiber plate; the end part of the carbon fiber plate close to the fixed anchor head extends into the first wedge-shaped channel; first wedge plugs are symmetrically arranged on two surfaces of the carbon fiber plate in the first wedge-shaped channel; a first tooth-shaped structure is arranged on the wall surface of the first wedge plug, which is attached to the carbon fiber plate;

The second fixing mechanism comprises a second wedge-shaped channel arranged along the length direction of the carbon fiber plate; the height of the second wedge-shaped channel is gradually increased along the direction far away from the carbon fiber plate; the end part of the carbon fiber plate close to the tensioning anchor head extends into the second wedge-shaped channel; second wedge plugs are symmetrically arranged on two surfaces of the carbon fiber plate in the second wedge-shaped channel; and a second tooth-shaped structure is arranged on the wall surface of the second wedge plug, which is attached to the carbon fiber plate.

preferably, the tensioning screw rod is detachably and fixedly connected with the tensioning anchor head through a thread structure.

Preferably, a plurality of first fixing holes are uniformly formed in the first fixing plate; the fixed end anchor plate is fixed on the concrete base surface through a bolt passing through the first fixing hole;

A plurality of second fixing holes are uniformly formed in the second fixing plate; and the tensioning end anchor plate passes through the second fixing hole through a bolt and is fixed on the concrete base surface.

compared with the prior art, the beneficial effects of this application are:

1. the prestressed carbon fiber plate anchorage device system is characterized in that the second fixing mechanism and the tensioning screw are not in the same straight direction due to the eccentric design of the tensioning anchor head, so that the stress borne by the tensioning screw and the stress borne by the carbon fiber plate in the tensioning anchor head are not in the same straight line. Therefore, the concrete base surface in the sliding groove of the anchor plate at the tensioning end is only required to be grooved. In the fixed slot of stiff end anchor slab, only need to place the concrete base face of fixed anchor head and carry out fluting can. The grooving area is greatly reduced, and the damage to the original structure is weakened;

2. the length of the carbon fiber plate can be cut according to the actual construction length on site, so that rework caused by deviation of the design size and the actual size is avoided;

3. The carbon fiber plate is in mechanical contact with the fixing mechanism, so that the problem of later-stage anchorage failure caused by structural adhesive aging is solved;

4. The arrangement of the reinforced steel plate ensures that the anchoring stability of the prestressed anchorage device system is higher, and the maximum tensile stress can reach more than 1600 MPa; when the carbon fiber plate is fixed through the first fixing mechanism and the second fixing mechanism, hands can be stretched into the carbon fiber plate from the first open slot and the second open slot, and therefore the carbon fiber plate can be conveniently fixed in the fixed anchor head and the tensioning anchor head. The stability and the construction convenience of this application ground tackle are far higher than conventional ground tackle on the market at present.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of a prestressed carbon fiber plate anchor system according to an embodiment of the present disclosure;

FIG. 2 is a schematic side view of a fixed end anchor plate;

FIG. 3 is a schematic view of the construction of the tension anchor head;

FIG. 4 is a schematic structural view of a first fixing mechanism;

Fig. 5 is a schematic structural view of the second fixing mechanism.

Reference numbers in the figures: 11. a carbon fiber sheet; 12. a fixed end anchor plate; 13. tensioning the end anchor plate; 14. Fixing the anchor head; 15. a first fixing mechanism; 16. a tensioning mechanism; 17. a second fixing mechanism;

21. A first fixing plate; 22. a connecting plate; 23. mounting a plate; 24. fixing grooves; 25. a first open slot; 26. reinforcing a steel plate; 27. a first fixing hole;

31. a chute; 32. a second fixing plate; 33. a support plate; 34. a second open slot; 35. a second fixing hole;

51. A first wedge channel; 52. a first wedge; 53. a first tooth form structure;

61. Tensioning the anchor head; 62. stretching the screw; 63. stretching the baffle; 64. a jack; 65. a first nut; 66. a second nut.

71. A second wedge channel; 72. a second wedge; 73. a second tooth formation.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

referring to fig. 1 to 5, an embodiment of the present application provides a prestressed carbon fiber plate anchor system, including an elongated carbon fiber plate 11 disposed on a concrete foundation to be reinforced; one end of the carbon fiber plate is provided with a fixed end anchor plate 12, and the other end is provided with a tensile end anchor plate 13.

The fixed end anchor plate 12 comprises first fixed plates 21 symmetrically arranged on two sides of the carbon fiber plate 11 in the length direction and is used for fixing the fixed end anchor plate 12 on a concrete base surface; the adjacent sides of the two first fixing plates 21 are fixedly provided with connecting plates 22; an installation plate 23 is arranged between the two connection plates 22; a fixing groove 24 is formed between the surface of the mounting plate 23 close to the concrete base surface and the two connecting plates 22; a fixed anchor head 14 is arranged in the fixed groove 24 and used for fixing the carbon fiber plate 11; the fixed anchor head 14 is fixedly connected with the mounting plate 23 through a bolt; a first open slot 25 is formed in one side, away from the carbon fiber plate 11, of the fixing anchor head 14 on the mounting plate 23; the two reinforcing steel plates 26 are arranged on the surface of the mounting plate 23 far away from the concrete base surface along the length direction of the carbon fiber plate 11, so that the structural strength of the fixed-end anchor plate 12 is effectively enhanced, and the fixed-end anchor plate 12 is prevented from bending and yielding due to overlarge tension stress; a first fixing mechanism 15 is arranged in the fixed anchor head 14, and the carbon fiber plate 11 is fixed in the fixed anchor head 14 through the first fixing mechanism 15. When the carbon fiber plate 11 is fixed by the first fixing mechanism 15, the carbon fiber plate 11 can be fixed in the fixed anchor head 14 more conveniently through the first opening groove 34.

The tensioning end anchor plate 13 comprises a U-shaped chute 31 buckled on a concrete base surface; the chute 31 is arranged along the length direction of the carbon fiber plate 11, and the direction of the chute 31 is used as the stretching track of the carbon fiber plate 11; the chutes 31 are symmetrically and fixedly provided with second fixing plates 32 along the two sides of the length direction of the carbon fiber plate 11, and the tensioning end anchor plate 13 is fixed on the concrete base surface through the second fixing plates 32; the end part of the chute 31 far away from the carbon fiber plate 11 is fixedly provided with a support plate 33 as a support base for stretching the carbon fiber plate 11; a second open groove 34 is formed in a wall surface of the chute 31 facing the concrete floor along the length direction of the carbon fiber plate 11.

the tensioning end anchor plate 13 is provided with a tensioning mechanism 16 for performing prestress tensioning on the carbon fiber plate 11; the tensioning mechanism 16 comprises a tensioning anchor head 61 arranged in the chute 31 in a sliding manner and used for fixing the carbon fiber plate; the end part of the tensioning anchor head 61 far away from the carbon fiber plate 11 is fixedly provided with two tensioning screws 62 along the direction vertical to the carbon fiber plate 11; a tensioning baffle 63 is arranged on one side of the support plate 33 away from the sliding chute 31; two tensioning screws 62 slidably penetrate through the support plate 33 and the tensioning baffle 63; a jack 64 is fixedly arranged between the support plate 33 and the tensioning baffle 63; a first nut 65 is sleeved on one side, close to the tensioning baffle 63, of the support plate 61 of each tensioning screw 62 in a threaded manner; a second nut 66 is sleeved on one side of each tensioning baffle 63, which is far away from the support plate 33, of each tensioning screw 62 in a threaded manner; a second fixing mechanism 17 is arranged between the concrete base surface and the two tensioning screws 62 in the tensioning anchor head 61, and the carbon fiber plate 11 is fixed in the tensioning anchor head 61 through the second fixing mechanism 17. When the carbon fiber plate 11 is fixed by the second fixing mechanism 17, the carbon fiber plate 11 can be more conveniently fixed in the tension anchor head 61 through the second opening groove 34.

The working principle is as follows:

Firstly, cutting the carbon fiber plate 11 according to the actual size on site and the elongation of the carbon fiber plate 11, respectively placing two ends of the cut carbon fiber plate 11 into a fixed anchor head 14 and a tensioning anchor head 61, simultaneously fixing the carbon fiber plate 11 through a first fixing mechanism 15 and a second fixing mechanism 17, then fixing the fixed anchor head 14 in a fixing groove 24 through bolts, placing the tensioning anchor head 61 in a chute 31 of a tensioning end anchor plate 13, fixedly connecting through a tensioning screw 62, connecting one end of the tensioning screw 62 with the tensioning anchor head 61, penetrating the other end of the tensioning screw 62 through a support plate 33 and a tensioning baffle 63, fixedly installing a jack 64 between the tensioning baffle 63 and the support plate 33, after oil pressure is given, driving the tensioning screw 62 and the tensioning anchor head 61 to move together by the jack 64, elongating the carbon fiber plate 11, when the carbon fiber plate 11 reaches a certain tensioning stress and elongation, the prestress is locked by two first nuts 65, and the prestress tensioning process is completed.

in a preferred embodiment, the first fixing mechanism 15 comprises a first wedge-shaped channel 51 arranged along the length of the carbon fiber plate 11; the height of the first wedge channel 51 gradually increases in a direction away from the carbon fiber sheet 11; the end of the carbon fiber plate 11 close to the fixed anchor head 14 extends into the first wedge-shaped channel 51; first wedge plugs 52 are symmetrically arranged on two surfaces of the carbon fiber plate 11 in the first wedge-shaped channel 51; a first tooth-shaped structure 53 is arranged on the wall surface of the first wedge plug 52 jointed with the carbon fiber plate 11;

The second fixing mechanism 17 includes a second wedge channel 71 provided along the length direction of the carbon fiber plate 11; the height of the second wedge channel 71 gradually increases in a direction away from the carbon fiber sheet 11; the end part of the carbon fiber plate 11 close to the tensioning anchor head 61 extends into the second wedge-shaped channel 71; second wedge plugs 72 are symmetrically arranged on two surfaces of the carbon fiber plate 11 in the second wedge-shaped channel 71; the wall surface of the second wedge 72, which is attached to the carbon fiber plate 11, is provided with a second tooth structure 73.

Carbon fiber plate 11 and first fixed establishment 15 and second fixed establishment 17 are mechanical contact, have avoided the problem that causes later stage ground tackle to become invalid because of the structural adhesive is ageing, have prolonged the life of structure.

in a preferred embodiment, the tension screw 62 is detachably and fixedly connected with the tension anchor head 61 through a thread structure, so that the structure is fixedly connected and installed conveniently.

In a preferred embodiment, a plurality of first fixing holes 27 are uniformly formed on the first fixing plate 21; the fixed end anchor plate 12 passes through the first fixing hole 27 through a bolt to be fixed on a concrete base surface, and the fixed end anchor plate 12 is firmly fixed;

a plurality of second fixing holes 35 are uniformly formed in the second fixing plate 32; the tensioning end anchor plate 13 is fixed on the concrete base surface through the bolts passing through the second fixing holes 35, and the tensioning end anchor plate 13 is firmly fixed.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.