CN220625989U - Anchoring device for repeated fiber tendon test - Google Patents
Anchoring device for repeated fiber tendon test Download PDFInfo
- Publication number
- CN220625989U CN220625989U CN202322195623.6U CN202322195623U CN220625989U CN 220625989 U CN220625989 U CN 220625989U CN 202322195623 U CN202322195623 U CN 202322195623U CN 220625989 U CN220625989 U CN 220625989U
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- Prior art keywords
- wedge
- groove
- tendon
- fiber
- reusable
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- 239000000835 fiber Substances 0.000 title claims abstract description 47
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 238000004873 anchoring Methods 0.000 title claims abstract description 24
- 210000002435 tendon Anatomy 0.000 title claims abstract description 21
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 210000003205 muscle Anatomy 0.000 claims abstract description 3
- 238000005488 sandblasting Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 description 1
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 1
- 101710107464 Probable pyruvate, phosphate dikinase regulatory protein, chloroplastic Proteins 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The utility model discloses an anchoring device for a reusable fiber tendon test, which comprises two anchoring assemblies used for fixing two ends of a fiber tendon; every anchor subassembly includes two splint, two wedge clamping pieces and a plurality of bolt, two splint are detained each other and are passed through the bolt fastening is provided with the wedge groove respectively on the opposite face of two splint, two the mutual lock in wedge groove forms and holds the chamber, two wedge clamping pieces are used for the centre gripping fibre muscle and place in hold the intracavity, two splint compress tightly two wedge clamping pieces. By adopting the technical scheme, the anchoring device for the reusable fiber tendon test does not need to be filled with glue, and can immediately perform strength test after installation, so that the standing and curing time of the adhesive is saved; the anchoring device can be reused, and test detection cost is saved.
Description
Technical Field
The utility model relates to an anchoring device for a reusable fiber tendon test, and belongs to the technical field of construction engineering.
Background
The fiber composite bar, fiber bar for short, FRP bar is formed by adopting continuous fiber materials including but not limited to Carbon Fiber (CFRP), glass Fiber (GFRP), aramid Fiber (AFRP), basalt Fiber (BFRP) and the like, adopting resin (mainly epoxy resin, polyethylene resin, polyamide resin and the like) to glue, and then carrying out pultrusion through a special die. The fiber reinforcement not only has good corrosion resistance, but also has tensile strength far higher than that of the steel reinforcement, especially replaces the steel reinforcement in a concrete structure in special environments (coastal engineering, slope reinforcement engineering and the like), can greatly improve the service performance and durability of the concrete structure, and is gradually applied to the external prestress reinforcement engineering of bridge construction in recent years.
At present, most of common anchoring modes in fiber bar strength test are bonding anchoring, and usually, adhesives such as epoxy resin or grouting materials are used as bonding media, so that the bonding media are required to be cured and molded, time and labor are wasted, and resources are wasted due to incapability of recycling. In addition to static load tests, the bonding medium and the fiber rib-bonding medium interface are easy to damage under fatigue loading conditions, so that the anchoring system is invalid, and stripping damage of the fiber rib-bonding medium interface or the bonding medium-sleeve interface occurs.
Disclosure of Invention
Accordingly, it is an object of the present utility model to provide an anchoring device for a reusable fiber tendon test.
In order to achieve the above object, the utility model provides an anchoring device for a reusable fiber tendon test, comprising two anchoring assemblies for fixing two ends of a fiber tendon; every anchor subassembly includes two splint, two wedge clamping pieces and a plurality of bolt, two splint are detained each other and are passed through the bolt fastening is provided with the wedge groove respectively on the opposite face of two splint, two the mutual lock in wedge groove forms and holds the chamber, two wedge clamping pieces are used for the centre gripping fibre muscle and place in hold the intracavity, two splint compress tightly two wedge clamping pieces.
Grooves are formed in opposite faces of the two wedge-shaped clamping pieces, and the ends of the fiber ribs are inserted into the grooves.
The side wall of the groove is a roughened surface.
The side wall of the groove is provided with knurling, insection or threads, or the groove is a sand blasting groove surface.
The wedge-shaped clamping piece is semi-conical.
A plurality of mounting holes for mounting bolts are distributed on the clamping plate and positioned on two sides of the wedge-shaped groove.
The caps of the adjacent bolts are staggered up and down.
One end of the clamping plate is a proximal end, the other end of the clamping plate is a distal end, the wedge-shaped groove starts from the distal end of the clamping plate, and a mounting groove is formed in the clamping plate and close to the proximal end; in each of the anchor assemblies, a pin penetrates into the mounting grooves of the two clamping plates, and the end portions of the pin protrude to the outside of the mounting grooves.
The mounting groove is a square groove, and the pin is a square pin.
By adopting the technical scheme, the anchoring device for the reusable fiber tendon test has the following beneficial effects compared with the prior art:
1. the end parts of the fiber ribs are clamped and fixed through the anchoring assembly, glue filling is not needed, strength test can be performed immediately after the installation, and standing and curing time of the adhesive is saved;
2. the end part of the fiber bar can be prevented from sliding under the stress state, the shearing damage of the fiber bar is prevented, and the tensile strength and the deformation performance of the fiber bar can be completely measured;
3. the anchoring device can be reused, so that the test and detection cost is saved, and the device is suitable for various fiber ribs with smooth surfaces or ribs and hybrid fiber ribs, and is also suitable for factory quality inspection of fiber rib manufacturers besides being used for mechanical property tests of the fiber ribs;
4. the middle part of the clamping plate is provided with the wedge-shaped groove for placing the wedge-shaped clamping pieces, the grooves on the wedge-shaped clamping pieces can be provided with different apertures according to the diameters of fiber ribs to be tested, the outer diameters of the wedge-shaped clamping pieces with different apertures are consistent, the clamping plate can be repeatedly utilized, when the fiber ribs with different diameters are tested, only the different wedge-shaped clamping pieces are needed to be replaced, and the wedge-shaped clamping pieces are pulled more tightly in the tensioning process of the fiber ribs, so that the anchoring efficiency is high;
5. roughening the side wall of the groove of the wedge-shaped clamping piece, increasing friction force and avoiding slippage between the fiber ribs and the wedge-shaped clamping piece;
6. the two clamping plates are screwed by bolts, and the whole anchoring device does not need to be coated with glue;
7. the caps of the adjacent bolts are staggered up and down, so that the pressure transmission within the whole length range of the wedge-shaped clamping pieces and the fiber ribs is more uniform;
8. inserting the pin into the mounting groove of the clamping plate, and projecting the end of the pin to the outside of the mounting groove, so that the clamp of the testing machine can clamp the pin instead of clamping the proximal end of the clamping plate, thereby preventing the distal end from having a tendency to separate during clamping of the clamping plate to loosen the bolt; the holes on the pin and the steel plate are square, so that the limiting effect can be achieved, and the possibility that the anchoring device rotates around the axis of the pin to damage the testing machine after the fiber ribs are broken when the pin with the circular structure is adopted is avoided.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an exploded schematic view of the anchor assembly.
Fig. 3 is another angular schematic view of fig. 2.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1, the anchoring device for the reusable fiber tendon test of the present utility model comprises two anchoring assemblies 2, and two anchoring assemblies 2 fix both ends of the fiber tendon 1 for the test.
Specifically, as shown in fig. 2 and 3, each of the anchor assemblies 2 includes two clamping plates 21, two wedge-shaped clamping pieces 22, and a plurality of bolts (not shown), and the clamping plates 21 may be thick steel plates, and the two clamping plates 21 are fastened to each other and fixed by the bolts. Wedge-shaped grooves 211 are respectively arranged on opposite surfaces of the two clamping plates 21, the two wedge-shaped grooves 211 are mutually buckled to form a containing cavity, the two wedge-shaped clamping pieces 22 are used for clamping the fiber ribs 1 and are placed in the containing cavity, and the two clamping plates 21 press the two wedge-shaped clamping pieces 22.
On the opposite sides of the two wedge-shaped jaws 22 are provided grooves 221, and the ends of the fiber ribs 1 are inserted into the grooves 221 and clamped by the two wedge-shaped jaws 22. The side walls of the grooves 221 are provided with corrugations 222, but knurling or threading may also be provided, or the grooves 221 may be sandblasted grooves for increasing friction.
In this embodiment, the wedge-shaped clip 22 has a semi-conical cylindrical shape, and correspondingly, the wedge-shaped groove 211 on the clamping plate 21 has an arcuate cross section.
A plurality of mounting holes 212 for mounting bolts are distributed on the clamping plate 21 and located on both sides of the wedge-shaped groove 211, and caps of adjacent bolts are staggered up and down, i.e., one cap is upward and the other cap is downward in two adjacent bolts.
The clamping plate 21 has a proximal end 21a and a distal end 21b, the wedge-shaped groove 211 starts from the distal end 21b of the clamping plate 21, and a mounting groove 213 is formed in the clamping plate 21 and near the proximal end 21 a. In each of the anchor assemblies 2, a pin 3 penetrates into the mounting grooves 213 of both the clamping plates 21, and the end portions of the pin 3 protrude outside the mounting grooves 213. Preferably, in this embodiment, the mounting groove 213 is a square groove, and the pin 3 is a square pin.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (9)
1. An anchoring device for a reusable fiber tendon test, which is characterized in that: comprises two anchoring components for fixing two ends of the fiber rib; every anchor subassembly includes two splint, two wedge clamping pieces and a plurality of bolt, two splint are detained each other and are passed through the bolt fastening is provided with the wedge groove respectively on the opposite face of two splint, two the mutual lock in wedge groove forms and holds the chamber, two wedge clamping pieces are used for the centre gripping fibre muscle and place in hold the intracavity, two splint compress tightly two wedge clamping pieces.
2. The reusable fiber tendon testing anchor apparatus of claim 1, wherein: grooves are formed in opposite faces of the two wedge-shaped clamping pieces, and the ends of the fiber ribs are inserted into the grooves.
3. The reusable fiber tendon testing anchor apparatus of claim 2, wherein: the side wall of the groove is a roughened surface.
4. A reusable tendon testing anchor as claimed in claim 3, wherein: the side wall of the groove is provided with knurling, insection or threads, or the groove is a sand blasting groove surface.
5. The reusable fiber tendon testing anchor apparatus of claim 1, wherein: the wedge-shaped clamping piece is semi-conical.
6. The reusable fiber tendon testing anchor apparatus of claim 1, wherein: a plurality of mounting holes for mounting bolts are distributed on the clamping plate and positioned on two sides of the wedge-shaped groove.
7. The reusable fiber tendon testing anchor apparatus of claim 6, wherein: the caps of the adjacent bolts are staggered up and down.
8. A reusable tendon testing anchor as claimed in any one of claims 1 to 7, wherein: one end of the clamping plate is a proximal end, the other end of the clamping plate is a distal end, the wedge-shaped groove starts from the distal end of the clamping plate, and a mounting groove is formed in the clamping plate and close to the proximal end; in each of the anchor assemblies, a pin penetrates into the mounting grooves of the two clamping plates, and the end portions of the pin protrude to the outside of the mounting grooves.
9. The reusable fiber tendon testing anchor apparatus of claim 8, wherein: the mounting groove is a square groove, and the pin is a square pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322195623.6U CN220625989U (en) | 2023-08-15 | 2023-08-15 | Anchoring device for repeated fiber tendon test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322195623.6U CN220625989U (en) | 2023-08-15 | 2023-08-15 | Anchoring device for repeated fiber tendon test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220625989U true CN220625989U (en) | 2024-03-19 |
Family
ID=90220901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322195623.6U Active CN220625989U (en) | 2023-08-15 | 2023-08-15 | Anchoring device for repeated fiber tendon test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220625989U (en) |
-
2023
- 2023-08-15 CN CN202322195623.6U patent/CN220625989U/en active Active
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