CN115370073A - Clamping piece-bonding combined type anchorage device for anchoring carbon fiber bars - Google Patents
Clamping piece-bonding combined type anchorage device for anchoring carbon fiber bars Download PDFInfo
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- CN115370073A CN115370073A CN202210973718.3A CN202210973718A CN115370073A CN 115370073 A CN115370073 A CN 115370073A CN 202210973718 A CN202210973718 A CN 202210973718A CN 115370073 A CN115370073 A CN 115370073A
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- carbon fiber
- anchor
- clip
- sleeve
- clamping piece
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/127—The tensile members being made of fiber reinforced plastics
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a clamping piece-bonding combined type anchorage device for anchoring carbon fiber reinforcements, which comprises a clamping piece, an extrusion sleeve, a connecting sleeve, a conical anchoring cavity and epoxy resin, wherein the clamping piece is arranged on the extrusion sleeve; the extrusion sleeve is sleeved on the clamping sheet and applies pretightening force to the clamping sheet to form an extrusion section of the anchorage device; the epoxy resin is poured into the cavity of the conical anchor cavity to form a bonding section of the anchor; the extrusion sleeve and the conical anchor cavity are connected into a whole through a connecting sleeve to form a combined anchor device structure. The scheme combines the clamping piece type and the bonding type, fully exerts the excellent performance of the carbon fiber reinforced composite material rib ground, and greatly improves the reliability of the anchorage device for anchoring the carbon fiber reinforced composite material rib.
Description
Technical Field
The invention relates to the technical field of process manufacturing, in particular to a clamping piece-bonding combined type anchorage device for anchoring carbon fiber bars.
Background
The reinforcing steel bars used in the field of traditional civil engineering are exposed in air or humid environment, and are very easy to generate electrochemical corrosion, so that the mechanical property of the reinforcing steel bars is degraded, the safety of structural members is influenced, great potential safety hazards are caused, and the normal use of the structure is greatly influenced.
In order to solve the problem that the normal use of a building is affected due to the corrosion of a steel bar, scientists and engineers in various countries want a plurality of methods, and in recent decades, with the development of material science and technology, carbon fiber reinforced resin composite bars are gradually and widely applied to the field of civil engineering with absolute advantages of the carbon fiber reinforced resin composite bars. Compared with traditional stressed materials (steel bars), the CFRP steel bars are used as stressed bars, external prestressed bars, stay cables, ground anchors and the like in the field of civil engineering due to the advantages of light weight, high strength, fatigue resistance, corrosion resistance, easiness in processing, convenience in transportation and the like.
The CFRP rib has higher tensile strength and modulus, and is commonly used for prestressed structures, such as prestressed carbon fiber ribs, external prestressed structures and the like, but because the transverse mechanical property of the carbon fiber reinforced composite material rib is relatively poor, a steel wire anchoring method cannot be adopted, and a professional anchoring mode must be adopted to anchor the carbon fiber reinforced composite material rib, so that the excellent performance of the carbon fiber reinforced composite material rib can be fully exerted.
The existing anchorage device for anchoring the carbon fiber reinforced composite material rib is mostly in a bonding form or a clamping piece type, and the two anchorage devices have the advantages and disadvantages, the bonding length required by the bonding property is longer, the clamping piece type damages the carbon fiber reinforced composite material rib to a certain extent, the anchorage device is not suitable for the exertion of the fatigue property of the carbon fiber reinforced composite material rib, and the reliability of the anchorage device for anchoring the carbon fiber reinforced composite material rib is reduced.
Therefore, the problem to be solved in the art is how to improve the reliability of the anchorage device for anchoring the carbon fiber reinforced composite material rib.
Disclosure of Invention
Aiming at the technical problem of low reliability of the conventional anchorage device for anchoring the carbon fiber reinforced composite material rib, the invention aims to provide a clamping piece-bonding combined type anchorage device for anchoring the carbon fiber rib, which can fully exert the excellent performance of the carbon fiber reinforced composite material rib, improve the reliability of the anchorage device for anchoring the carbon fiber reinforced composite material rib and well overcome the problems in the prior art.
In order to achieve the purpose, the invention provides a clamping piece-bonding combined type anchorage device for anchoring carbon fiber reinforcements, which comprises a clamping piece, an extrusion sleeve, a connecting sleeve, a conical anchoring cavity and epoxy resin; the extrusion sleeve is sleeved on the clamping sheet and applies pretightening force to the clamping sheet to form an extrusion section of the anchorage device; the epoxy resin is poured into the cavity of the conical anchor cavity to form a bonding section of the anchor; the extrusion sleeve and the conical anchor cavity are connected into a whole through a connecting sleeve to form a combined anchor device structure.
Further, the peripheral surface of the clamping piece is a conical surface; the clamping piece is provided with a first through hole in the middle in a penetrating mode, and the diameter of the first through hole is matched with the diameter of the corresponding carbon fiber rib.
Furthermore, the peripheral surface of the extrusion sleeve is a plane, and the inner part of the extrusion sleeve is a conical surface and is matched with the peripheral surface of the clamping piece for connection.
Further, the taper angle of the conical surface of the extrusion sleeve is larger than that of the peripheral surface of the clamping piece.
Furthermore, the peripheral surface of the conical anchor cavity is a plane, and the interior of the conical anchor cavity is a conical surface; and a second through hole is arranged in the middle of the conical surface in the conical surface anchor cavity in a penetrating manner, and the diameter of the second through hole is matched with that of the carbon fiber bar.
Furthermore, a third through hole penetrates through the middle of the connecting sleeve, and the diameter of the third through hole is matched with that of the carbon fiber rib.
Further, the connecting sleeve comprises a large-diameter end and a small-diameter end, and the large-diameter end and the small-diameter end are connected in a matched mode to form a connecting body between the extrusion sleeve and the conical anchor cavity.
Furthermore, a first placing groove is formed in the middle of the small-diameter end, the diameter of the first placing groove is matched with that of the extrusion sleeve, and the first placing groove can be sleeved on the extrusion sleeve and is connected with the extrusion sleeve in a matched mode; the connecting sleeve major diameter end is equipped with the second resettlement groove, and its diameter matches with the diameter of toper anchor chamber tip, can carry out the cooperation with the tip embedding second resettlement inslot of toper anchor chamber and connect.
Further, a protective layer is arranged inside the second containing groove.
Further, the central points of the first through hole, the second through hole and the third through hole are positioned on the same horizontal line.
According to the clamping piece-bonding combined type anchorage device for anchoring the carbon fiber reinforced plastic rib, the clamping piece type and the bonding type are combined, so that the excellent performance of the carbon fiber reinforced plastic rib is fully exerted, and the reliability of the anchorage device for anchoring the carbon fiber reinforced plastic rib is greatly improved.
Drawings
The invention is further described below in conjunction with the appended drawings and the detailed description.
FIG. 1 is a schematic view of the overall structure of the composite anchor;
FIG. 2 is a schematic view of the structure of the clamping piece of the composite anchor;
FIG. 3 is a schematic view of an extruded sleeve of the present composite anchor;
FIG. 4 is a schematic view of a conical anchor cavity of the present composite anchor;
fig. 5 is a schematic structural view of a connecting sleeve in the composite anchor.
The following are references describing the components in the drawings:
100. the carbon fiber bar 200, the clip 300, the compression sleeve 400, the conical anchor cavity 500, the epoxy 600, the connection sleeve 210, the outer peripheral surface 220, the first through hole 310, the conical surface 410, the thread 420, the conical surface 610, the small diameter end 611, the first accommodation groove 612, the gap 620, the large diameter end 621, the second accommodation groove 622, the protection layer 630 and the third through hole.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Aiming at the technical problem that the existing anchorage device for anchoring the carbon fiber reinforced composite material rib has low reliability, based on the technical problem, the invention provides the clamping piece-bonding combined type anchorage device for anchoring the carbon fiber rib, which is used for fully playing the excellent performance of the carbon fiber reinforced composite material rib and improving the reliability of the anchorage device for anchoring the carbon fiber reinforced composite material rib by combining the clamping piece type and the bonding type.
Referring to fig. 1, the clamping piece and bonding combined type anchor for anchoring carbon fiber bars provided by the present invention includes a clamping piece 200, an extrusion sleeve 300, a connection sleeve 600, a conical anchor cavity 400 and epoxy resin 500.
The clip 200 is connected to the pressing sleeve 300 in a fitting manner, and is used for clamping the carbon fiber bar 100.
Further, referring to fig. 2, the peripheral surface 210 of the clip 200 is a tapered surface capable of mating with the compression sleeve 300.
The middle of the clamping piece 200 is provided with a first through hole 220 in a penetrating manner, and the diameter of the first through hole 220 corresponds to the diameter of the carbon fiber bar 100, so that the carbon fiber bar 100 can pass through the first through hole 220 of the clamping piece, and the carbon fiber bar 100 is limited to a certain extent.
The extrusion sleeve 300 is sleeved outside the clamping piece 200, applies a pre-tightening force to the clamping piece 200, extrudes and deforms the clamping piece 200, and extrudes and clamps the carbon fiber ribs 100 inside the clamping piece 200.
Referring to fig. 3, the pressing sleeve 300 has a flat outer surface and a tapered inner surface 310, and is capable of being coupled to the tapered surface 210 of the clip 200.
Here, the taper angle of the tapered surface 210 of the clip 200 is different from the taper angle of the tapered surface 310 of the pressing sleeve, and there is a taper difference, so that the pressing sleeve 300 can be prevented from generating a large pressing force to the front end of the clip 200 to damage the carbon fiber bar 100, and the clip 200 can be loaded into the pressing sleeve 300 without damage.
Simultaneously, the face of being connected of clamping piece 200 and extrusion sleeve 300 all adopts the toper face, and extrusion sleeve 300 can make the clamping piece 200 front end need not to bear great extrusion force when establishing along the peripheral face cover of clamping piece 200, and the rear end can slowly form the extrusion to clamping piece 200 through the toper face of looks adaptation, can make the in-process that clamping piece 200 and extrusion sleeve 300 barrel cooperation set up, guarantees that the inside carbon fiber muscle 100 of clamping piece 200 does not receive destruction and can finally reach the effect of carrying out the centre gripping to it
After passing carbon fiber bar 100 through first through-hole 220 in the clamping piece 200, establish extrusion sleeve 300 and exert the pretightning force to clamping piece 200 at the outside cover of clamping piece 200 for clamping piece 200 can extrude spacingly to the carbon fiber bar 100 of inside, consequently, constitutes the extrusion section of this ground tackle through the cooperation between clamping piece 200 and the extrusion sleeve 300.
The conical anchor cavity 400 is used to achieve bonding of the carbon fiber tendon 100.
Referring to fig. 4, the conical anchor cavity 400 has a flat outer surface and a conical inner surface 420.
Wear to be equipped with the second through-hole in the middle of inside conical surface 420, the diameter of this second through-hole matches with the diameter of carbon fiber muscle 100, can make carbon fiber muscle 100 can pass toper anchor chamber 400.
Meanwhile, when the conical anchor cavity 400 is assembled with the clip 200 in a matching manner, the center points of the second through hole and the first through hole 220 are located on the same horizontal line, so that the carbon fiber bar 100 can sequentially pass through the clip 200 and the conical anchor cavity 400.
The outlet diameter of the outlet end of the conical anchor cavity 400 is larger than the diameter of the carbon fiber bar 100, so that when the carbon fiber bar 100 passes through the outlet of the conical anchor cavity 400, a certain space can be reserved for filling the epoxy resin 500.
And injecting epoxy resin 500 into the inner conical surface 420 of the conical anchor cavity 400 through the outlet of the conical anchor cavity 400 until the conical anchor cavity 400 is full, and anchoring the carbon fiber ribs 100 in the conical anchor cavity 400 through the epoxy resin 500 to form the bonding section of the anchor.
In addition, a connecting sleeve 600 is arranged between the extrusion section and the bonding section of the anchor, and the extrusion section and the bonding section are connected through the connecting sleeve 600.
Referring to fig. 5, a third through hole 630 is formed in the middle of the connecting sleeve 600 in a penetrating manner, and the diameter of the third through hole 630 is matched with the diameter of the carbon fiber rib 100, so that the carbon fiber rib 100 can pass through the connecting sleeve 600.
Meanwhile, when the connecting sleeve 600 is connected with the clamping piece 200 and the conical anchor cavity 400 in a matching manner, the third through hole 630 and the central points of the second through hole and the first through hole 220 are positioned on the same horizontal line, so that the carbon fiber ribs 100 can sequentially penetrate through the clamping piece 200, the connecting sleeve 600 and the conical anchor cavity 400.
The connecting sleeve 600 comprises a large diameter end 620 and a small diameter end 610, and the large diameter end 620 and the small diameter end 610 are connected in a matching manner to form a connecting body between the extrusion sleeve 300 and the conical anchor cavity 400.
First, a first seating groove 611 is formed in the middle of the small-diameter end 600, the diameter of the first seating groove is matched with the diameter of the extrusion sleeve 300, the first seating groove can be sleeved on the extrusion sleeve 300, and the small-diameter end 610 of the connecting sleeve is connected with the extrusion sleeve 300 in a matched manner through a nut.
In addition, a certain gap 612 should be left between the small diameter end 610 of the connecting sleeve and the extrusion sleeve 300, so that the clip 200 has a certain forward sliding space and can adapt to clips 200 with different lengths.
The big diameter end 620 of adapter sleeve is equipped with the second resettlement groove 621 of certain degree of depth, and second resettlement groove 621 is inside to be equipped with the screw thread, can be equipped with the screw thread 410 of matcing in the one end of the toper anchor chamber 400 of being connected with it, is connected big diameter end 620 of adapter sleeve and toper anchor chamber 400 through the screw thread, can realize the quick convenient dismouting between adapter sleeve 600 and the toper anchor chamber 400.
In addition, a protective layer 622 is inserted into the second seating groove 621 to prevent the epoxy resin 500 from adhering to the connection sleeve 600.
This scheme sets up adapter sleeve 600 through will extrude the section and bond the section and links to each other, and the adapter sleeve can make each part independent atress with bonding section and the reasonable part of extrusion section, and the reliability when having realized this ground tackle device application plays the effect simultaneously.
The clamping piece-bonding combined type anchorage device for anchoring the carbon fiber ribs, which is formed by the scheme, has very small slippage and higher anchoring efficiency when being used for anchoring a single carbon fiber reinforced composite rib, and can fully play the high-strength performance of the carbon fiber reinforced composite rib.
Meanwhile, the anchorage device can effectively avoid damage to the expansion of the carbon fiber reinforced composite material rib, the clamping piece section anchoring easily causes damage to the carbon fiber reinforced composite material rib, and the front part of the anchorage device is provided with enough bonding sections, so that the development of damage can be well limited.
Secondly, this ground tackle is through being connected clip piece and bonding section, can make clip piece and bonding section play a role simultaneously to avoided the condition that certain section atress first, then another section atress again, lead to whole bearing capacity to descend.
In addition, the anchorage device is simple in stress and convenient to assemble, can be divided into a plurality of independent parts, has good assembly lines, is alternative and is convenient to recycle.
(5) The anchoring method has stable test data and reliable performance, and can be widely used for carbon fiber reinforced composite bars with various diameters.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A clamping piece-bonding combined type anchorage device for anchoring carbon fiber reinforcements is characterized by comprising a clamping piece, an extrusion sleeve, a connecting sleeve, a conical anchor cavity and epoxy resin; the extrusion sleeve is sleeved on the clamping sheet, and applies pretightening force to the clamping sheet to form an extrusion section of the anchorage device; the epoxy resin is poured into the cavity of the conical anchor cavity to form a bonding section of the anchor; the extrusion sleeve and the conical anchor cavity are connected into a whole through a connecting sleeve to form a composite anchor structure.
2. The clip-bonded composite anchor of claim 1, wherein the peripheral surface of the clip is a tapered surface; the clamping piece is provided with a first through hole in the middle in a penetrating mode, and the diameter of the first through hole is matched with the diameter of the corresponding carbon fiber rib.
3. The clip-bonded composite anchor of claim 2, wherein the extrusion sleeve has a flat outer surface and a tapered inner surface and is engaged with the outer surface of the clip.
4. The clip-bonded composite anchor of claim 3, wherein the taper angle of the tapered surface of the extruded sleeve is greater than the taper angle of the peripheral surface of the clip.
5. The clip-bonded composite anchor for anchoring carbon fiber reinforced plastic of claim 1, wherein the tapered anchor cavity has a planar outer peripheral surface and a tapered inner surface; and a second through hole is arranged in the middle of the conical surface in the conical surface anchor cavity in a penetrating manner, and the diameter of the second through hole is matched with that of the carbon fiber bar.
6. The clip-bonding composite anchor for anchoring carbon fiber reinforcements according to claim 1, wherein a third through hole is formed in the middle of the connecting sleeve in a penetrating manner, and the diameter of the third through hole is matched with that of the carbon fiber reinforcements.
7. The clip-bonded composite anchor of claim 1, wherein the connecting sleeve comprises a large diameter end and a small diameter end, the large diameter end and the small diameter end cooperatively connecting to form a connection between the extrusion sleeve and the tapered anchor cavity.
8. The clip-bonding composite anchorage for anchoring carbon fiber bars as claimed in claim 7, wherein a first seating groove is formed in the middle of the small-diameter end, the diameter of the first seating groove is matched with that of the extrusion sleeve, and the first seating groove can be sleeved on and connected with the extrusion sleeve; the big diameter end of the connecting sleeve is provided with a second placing groove, the diameter of the second placing groove is matched with that of the end part of the conical anchor cavity, and the end part of the conical anchor cavity can be embedded into the second placing groove to be connected in a matched mode.
9. The clip-bonded composite anchor for anchoring carbon fiber reinforced plastic bars as claimed in claim 8, wherein a protective layer is provided inside the second seating groove.
10. A clip-bonded composite anchor according to claim 2, 5 or 6, wherein the first, second and third through holes have centre points which are in the same horizontal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210973718.3A CN115370073A (en) | 2022-08-15 | 2022-08-15 | Clamping piece-bonding combined type anchorage device for anchoring carbon fiber bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210973718.3A CN115370073A (en) | 2022-08-15 | 2022-08-15 | Clamping piece-bonding combined type anchorage device for anchoring carbon fiber bars |
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| Publication Number | Publication Date |
|---|---|
| CN115370073A true CN115370073A (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210973718.3A Pending CN115370073A (en) | 2022-08-15 | 2022-08-15 | Clamping piece-bonding combined type anchorage device for anchoring carbon fiber bars |
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| CN (1) | CN115370073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117947975A (en) * | 2024-03-26 | 2024-04-30 | 陕西方元预应力机械有限公司 | Pretightening force applying device of anchorage device and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078286A (en) * | 2007-07-04 | 2007-11-28 | 湖南大学 | Composite anchorage used for anchoring multiple fiber reinforcement plastic bar or dragline |
| US20120124937A1 (en) * | 2010-05-24 | 2012-05-24 | Jin-Guang Teng | Hybrid frp-concrete-steel double-skin tubular beams and hybrid dstb/slab units using the beams |
| CN104533019A (en) * | 2014-12-29 | 2015-04-22 | 中冶建筑研究总院有限公司 | High-performance fiber grid anchorage system and method |
| CN108532837A (en) * | 2018-06-01 | 2018-09-14 | 沈阳建筑大学 | The double sleeve anchorages of combined type for FRP tendons and its anchoring process |
| CN212743146U (en) * | 2020-06-02 | 2021-03-19 | 刘婷 | Large-diameter prestressed carbon fiber reinforced plastic cable anchorage |
| CN216340468U (en) * | 2021-12-06 | 2022-04-19 | 智性纤维复合加固南通有限公司 | FRP rib material extrusion type flat plate anchorage device |
-
2022
- 2022-08-15 CN CN202210973718.3A patent/CN115370073A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078286A (en) * | 2007-07-04 | 2007-11-28 | 湖南大学 | Composite anchorage used for anchoring multiple fiber reinforcement plastic bar or dragline |
| US20120124937A1 (en) * | 2010-05-24 | 2012-05-24 | Jin-Guang Teng | Hybrid frp-concrete-steel double-skin tubular beams and hybrid dstb/slab units using the beams |
| CN104533019A (en) * | 2014-12-29 | 2015-04-22 | 中冶建筑研究总院有限公司 | High-performance fiber grid anchorage system and method |
| CN108532837A (en) * | 2018-06-01 | 2018-09-14 | 沈阳建筑大学 | The double sleeve anchorages of combined type for FRP tendons and its anchoring process |
| CN212743146U (en) * | 2020-06-02 | 2021-03-19 | 刘婷 | Large-diameter prestressed carbon fiber reinforced plastic cable anchorage |
| CN216340468U (en) * | 2021-12-06 | 2022-04-19 | 智性纤维复合加固南通有限公司 | FRP rib material extrusion type flat plate anchorage device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117947975A (en) * | 2024-03-26 | 2024-04-30 | 陕西方元预应力机械有限公司 | Pretightening force applying device of anchorage device and using method thereof |
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