CN115012300A - Reusable extrusion-friction type anchoring system for FRP (fiber reinforced Plastic) ribs and anchoring method thereof - Google Patents
Reusable extrusion-friction type anchoring system for FRP (fiber reinforced Plastic) ribs and anchoring method thereof Download PDFInfo
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- CN115012300A CN115012300A CN202210693594.3A CN202210693594A CN115012300A CN 115012300 A CN115012300 A CN 115012300A CN 202210693594 A CN202210693594 A CN 202210693594A CN 115012300 A CN115012300 A CN 115012300A
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- 238000004873 anchoring Methods 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 11
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title claims description 70
- 239000011151 fibre-reinforced plastic Substances 0.000 title claims description 70
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 143
- 239000010959 steel Substances 0.000 claims abstract description 143
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 82
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000005488 sandblasting Methods 0.000 claims description 8
- 210000002435 tendon Anatomy 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 9
- 239000000835 fiber Substances 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides a reusable extrusion-friction type anchoring system for FRP ribs and an anchoring method thereof, belonging to the technical field of civil engineering, wherein the anchoring system comprises anchoring steel pipes with the same length, steel wedges and aluminum sleeves, and the shapes of the steel wedges and the aluminum sleeves are both in a circular truncated cone shape; the inner hole of the anchoring steel pipe is in a circular truncated cone shape, the shape taper of the steel wedge block is consistent with the taper of the inner hole of the anchoring steel pipe, the steel wedge block is positioned in the anchoring steel pipe, and the steel wedge block and the anchoring steel pipe are in interference fit; the aluminum sleeve is positioned in the steel wedge block, and the aluminum sleeve and the steel wedge block are in interference fit; the inner hole of the aluminum sleeve is circular, and the end part of the FRP rib is positioned in the inner hole of the aluminum sleeve and is in interference fit with the inner hole. The anchoring system reduces the fatigue damage of the FRP ribs; the annular extrusion force of the FRP ribs at the front end of the anchoring system is reduced, so that the friction force between the aluminum sleeves and the ribs is uniformly distributed along the length direction of the anchoring system. The anchoring system is convenient to install, easy to detach and reusable.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a reusable extrusion-friction type anchoring system for FRP ribs and an anchoring method thereof.
Background
The FRP composite material has the advantages of light weight, high strength, corrosion resistance, fatigue resistance and designability, and has been popularized and applied in the field of civil engineering on a large scale. In the nineties of the last century, the institute of building and technology, Zhongmei, institute of architecture, Limited company, pioneered the development, performance evaluation, and application of fiber reinforced composite products in China. Thereafter, the application research of the fiber composite material in the civil engineering field in China shows a rapid development situation. The composite material is most widely used in the field of reinforcement of existing structures, and with the continuous emergence of new products and application forms, the application of composite material ribs, cables, grids, section bars and the like in new buildings is also emphasized and relevant researches are carried out, and various novel composite material structures are developed and formed. The FRP cable anchor structure made of the fiber composite material rods is applied to bridge engineering, the design span of the bridge structure can be remarkably increased, and the durability of the material and the structure is improved. However, the transverse shear resistance and the transverse compression resistance of the fiber reinforced composite material are poor, and the fiber reinforced composite material has high tensile strength along the fiber direction, so that the anchoring of the composite material ribs is difficult, and the popularization and the application of the FRP cable anchor structure in a long-span bridge are severely limited.
The existing anchoring technology of the composite material rib mainly comprises a clamping type anchoring system and a bonding type anchoring system. The clamping type anchoring system has the advantages of convenience and quickness in installation, but the composite material has stress concentration in the anchorage device, and the ribs are easy to generate fatigue failure under the action of fatigue load. The bonding type anchoring system does not cause fatigue damage to the ribs, but the anchoring is more complicated, the anchorage device is too heavy, and the industrial production and application are not facilitated. Therefore, the existing clamping type anchorage device and the existing bonding type anchoring system cannot meet the anchoring requirement of the FRP rib for civil engineering.
Disclosure of Invention
Based on the defects, the invention aims to provide a reusable extrusion-friction type anchoring system for FRP ribs and an anchoring method thereof, so as to solve the problems of low anchoring efficiency, uneven stress distribution in an anchorage device, poor fatigue resistance and the like of the traditional anchoring system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: a reusable extrusion-friction type anchoring system for FRP ribs comprises anchoring steel pipes, steel wedges and aluminum sleeves which are the same in length, wherein the shapes of the steel wedges and the aluminum sleeves are both in a circular truncated cone shape; the inner hole of the anchoring steel pipe is in a circular truncated cone shape, the shape taper of the steel wedge block is consistent with the taper of the inner hole of the anchoring steel pipe, the steel wedge block is positioned in the anchoring steel pipe, and the steel wedge block and the anchoring steel pipe are in interference fit; the aluminum sleeve is positioned in the steel wedge block, and the aluminum sleeve and the steel wedge block are in interference fit; the inner hole of the aluminum sleeve is circular, and the end part of the FRP rib is positioned in the inner hole of the aluminum sleeve and is in interference fit with the inner hole.
Furthermore, the steel wedge block is of a radial three-piece structure and is combined to form a circular table with a conical inner hole, and the taper of the inner hole of the steel wedge block is 0.5-1 degrees.
Further, the aluminum sleeve comprises a three-flap structure which is combined to form a round table with a round inner hole; the external taper of the aluminum sleeve is larger than the internal taper of the steel wedge block, and the taper difference range is 0.05-0.15 degrees.
Furthermore, the taper of the inner hole of the anchoring steel pipe is 1-2 degrees.
Another object of the present invention is to provide an FRP tendon anchoring method using the above anchoring system, comprising the following steps:
firstly, roughening an anchoring end of an FRP rib, wherein the FRP rib is a round rib with a smooth surface and ribs, and the diameter of the FRP rib is 4-35 mm;
step two, respectively bonding the three-piece structure of the aluminum oversleeve and the three-piece structure of the corresponding steel wedge block together in a point contact manner, and bonding the bonded three-piece structure of the aluminum oversleeve and the steel wedge block at the anchoring end of the FRP rib in a surrounding manner in a point contact manner;
inserting the FRP ribs, the aluminum sleeves and the steel wedge blocks into the inner hole of the anchoring steel pipe;
fourthly, a limiting groove is formed in the upper plane of the steel frame, a limiting buckle is mounted on the limiting groove, and the lower end of the combined anchoring steel pipe is placed inside the limiting buckle of the steel frame;
and step five, starting the press machine, enabling the pressure head to be in contact with the steel wedge block, the aluminum sleeve and the upper plane of the anchoring end of the FRP rib, pressing the pressure head into the anchoring steel pipe until the required pressure value is reached, stopping the press machine, relieving the pressure, taking out the anchored FRP rib, and completing the anchoring of the FRP rib.
Furthermore, the outer wall and the inner hole of the aluminum sleeve and the inner hole of the steel wedge are subjected to sand blasting treatment, so that the friction force at the interface of the steel wedge, the aluminum sleeve and the FRP rib is increased.
Furthermore, the aluminum sleeves can be made of other soft metal materials.
The invention has the following advantages and beneficial effects:
1. according to the anchoring system, the aluminum sleeves with lower modulus are arranged between the steel wedge blocks and the FRP ribs, so that stress concentration of the ribs under fatigue load can be relieved, and fatigue damage of the FRP ribs is reduced.
2. Set up the tapering difference between aluminium oversleeve and steel wedge, prevented to reduce the FRP muscle and received the hoop extrusion force at anchoring system front end for the frictional force between aluminium oversleeve and the muscle is evenly distributed along anchoring system length direction.
3. The steel wedge blocks are in interference fit with the aluminum sleeves and the FRP ribs, so that the contact between the aluminum sleeves and the FRP ribs is increased, and the friction force between the aluminum sleeves and the FRP ribs is improved.
4. The anchoring system can apply the required hoop pre-compressive stress between the aluminum sleeves and the ribs, and can meet the tensile and fatigue tests of FRP ribs with different strength levels.
5. The anchoring system is convenient to install, easy to disassemble, reusable and convenient for industrial production and application.
Drawings
FIG. 1 is a schematic cross-sectional view of the anchoring system of the present invention;
FIG. 2 is a schematic cross-sectional view of the anchor;
FIG. 3 is a left side cross-sectional view of the anchor;
FIG. 4 is a right side cross-sectional view of the anchor;
FIG. 5 is a load-displacement graph of the anchoring system of the present invention;
wherein, 1-aluminum sleeve, 2-steel wedge, 3-anchoring steel pipe, 4-FRP rib, 5-press head, 6-limit buckle, 7-limit groove, 8-steel frame, 9-bolt, 10-press base.
Detailed Description
The invention will be further described by way of example with reference to the accompanying drawings in which:
example 1
As shown in fig. 1-4, a reusable extrusion-friction type anchoring system for FRP bars comprises an anchoring steel pipe 3, a steel wedge 2 and an aluminum sleeve 1, which have the same length, wherein the steel wedge 2 and the aluminum sleeve 1 are both in a truncated cone shape; the inner hole of the anchoring steel pipe 3 is in a round table shape, the taper of the inner hole is set to be 1 degree, the appearance taper of the steel wedge block 2 is consistent with the taper of the inner hole of the anchoring steel pipe 3, the steel wedge block 2 is positioned in the anchoring steel pipe 3, and the steel wedge block and the anchoring steel pipe are in interference fit; the aluminum sleeve 1 is positioned inside the steel wedge 2 and is in interference fit with the steel wedge 2; the inner hole of the aluminum sleeve 1 is circular, and the end part of the FRP rib 4 is positioned in the inner hole of the aluminum sleeve 1 and is in interference fit with the inner hole. The steel wedge block 2 is of a radial three-piece structure and is combined to form a circular table with a conical inner hole, and the taper of the inner hole of the steel wedge block 2 is 0.5 degrees. The aluminum sleeve 1 comprises a three-flap structure and is combined to form a circular table with a circular inner hole; the external taper of the aluminum sleeve 1 is larger than the internal taper of the steel wedge 2, and the difference range of the tapers is 0.1 degree. And (3) carrying out sand blasting treatment on the outer wall and the inner hole of the aluminum sleeve 2 and the inner hole of the steel wedge 3, and increasing the friction force at the interface of the steel wedge 3, the aluminum sleeve 2 and the FRP rib 4. The anchoring system can anchor the round rib with smooth surface and screw thread, the diameter range of the rib is 4mm, and the length of the rib is not limited. And (3) carrying out sand blasting treatment on the outer wall and the inner hole of the aluminum sleeve 2 and the inner hole of the steel wedge 3, and increasing the friction force at the interface of the steel wedge 3, the aluminum sleeve 2 and the FRP rib 4.
Example 2
As shown in fig. 1-4, a reusable extrusion-friction type anchoring system for FRP bars comprises an anchoring steel pipe 3, a steel wedge 2 and an aluminum sleeve 1, which have the same length, wherein the steel wedge 2 and the aluminum sleeve 1 are both in a truncated cone shape; the inner hole of the anchoring steel pipe 3 is in a circular truncated cone shape, the taper of the inner hole is set to be 1 degree, the appearance taper of the steel wedge block 2 is consistent with the taper of the inner hole of the anchoring steel pipe 3, the steel wedge block 2 is positioned in the anchoring steel pipe 3, and the steel wedge block and the anchoring steel pipe are in interference fit; the aluminum sleeve 1 is positioned inside the steel wedge 2 and is in interference fit with the steel wedge 2; the inner hole of the aluminum sleeve 1 is circular, and the end part of the FRP rib 4 is positioned in the inner hole of the aluminum sleeve 1 and is in interference fit with the inner hole. The steel wedge block 2 is of a radial three-piece structure and is combined to form a circular table with a conical inner hole, and the taper of the inner hole of the steel wedge block 2 is 1 degree. The aluminum sleeve 1 comprises a three-flap structure and is combined to form a round table with a round inner hole; the external taper of the aluminum sleeve 1 is larger than the internal taper of the steel wedge 2, and the taper difference range is 0.05 degrees. And (3) carrying out sand blasting treatment on the outer wall and the inner hole of the aluminum sleeve 2 and the inner hole of the steel wedge 3, and increasing the friction force at the interface of the steel wedge 3, the aluminum sleeve 2 and the FRP rib 4. The anchoring system can anchor the round rib with smooth surface and screw thread, the diameter range of the rib is 20mm, and the length of the rib is not limited. And (3) carrying out sand blasting treatment on the outer wall and the inner hole of the aluminum sleeve 2 and the inner hole of the steel wedge 3, and increasing the friction force at the interface of the steel wedge 3, the aluminum sleeve 2 and the FRP rib 4.
Example 3
As shown in fig. 1-4, a reusable extrusion-friction type anchoring system for FRP bars comprises an anchoring steel pipe 3, a steel wedge 2 and an aluminum sleeve 1, which have the same length, wherein the steel wedge 2 and the aluminum sleeve 1 are both in a truncated cone shape; the inner hole of the anchoring steel pipe 3 is in a circular truncated cone shape, the taper of the inner hole is set to be 2 degrees, the appearance taper of the steel wedge block 2 is consistent with the taper of the inner hole of the anchoring steel pipe 3, the steel wedge block 2 is positioned in the anchoring steel pipe 3, and the two are in interference fit; the aluminum sleeve 1 is positioned inside the steel wedge 2 and is in interference fit with the steel wedge 2; the inner hole of the aluminum sleeve 1 is circular, and the end part of the FRP rib 4 is positioned in the inner hole of the aluminum sleeve 1 and is in interference fit with the inner hole. The steel wedge block 2 is of a radial three-piece structure and is combined to form a circular table with a conical inner hole, and the taper of the inner hole of the steel wedge block 2 is 1 degree. The aluminum sleeve 1 comprises a three-flap structure and is combined to form a circular table with a circular inner hole; the external taper of the aluminum sleeve 1 is larger than the internal taper of the steel wedge 2, and the taper difference range is 0.15 degrees. The aluminum sleeve 1 may be replaced with other soft metal materials. And (3) carrying out sand blasting treatment on the outer wall and the inner hole of the aluminum sleeve 2 and the inner hole of the steel wedge 3, and increasing the friction force at the interface of the steel wedge 3, the aluminum sleeve 2 and the FRP rib 4. The anchoring system can anchor a round rib with a smooth surface and a thread, the diameter range of the rib is 35mm, and the length of the rib is not limited. And (3) carrying out sand blasting treatment on the outer wall and the inner hole of the aluminum sleeve 2 and the inner hole of the steel wedge 3, and increasing the friction force at the interface of the steel wedge 3, the aluminum sleeve 2 and the FRP rib 4.
Example 4
An FRP rib anchoring method comprises the following steps:
firstly, polishing the anchoring end of an FRP rib 4 by using sand paper, performing rough treatment, simultaneously removing rust of an inner hole of an anchoring steel pipe 3, and cleaning the polished FRP rib 4 and the inner hole of the anchoring steel pipe 3 by using absolute ethyl alcohol;
step two, respectively bonding the three-piece structure of the aluminum oversleeve 1 and the three-piece structure of the corresponding steel wedge block 2 together in a point contact manner by adopting 502 glue, and bonding the bonded three-piece structures of the aluminum oversleeve 1 and the steel wedge block 2 at the anchoring end of the FRP rib 4 in a surrounding manner in a point contact manner;
step three, inserting the FRP ribs 4 together with the aluminum sleeves 1 and the steel wedges 2 into inner holes of the anchoring steel pipes 3;
fourthly, a limiting groove 7 is formed in the upper plane of the steel frame 8, a limiting buckle 6 is installed on the limiting groove 7, the lower end of the combined anchoring steel pipe 3 is placed inside the limiting buckle 6 of the steel frame 8, the steel frame 8 has enough rigidity to prevent excessive deformation when pre-pressure is applied, and a screw hole is formed in the bottom of the steel frame 8 and used for fixing the steel frame 8 on a press machine base 10;
and step five, starting a press machine, enabling a pressure head 5 to be in contact with the upper planes of the anchoring ends of the steel wedge blocks 2, the aluminum oversleeves 1 and the FRP ribs 4, pressing the pressure head into the anchoring steel pipe 3 at the speed of 2mm/min until the required pressure value is reached, stopping the press machine, removing the pressure, taking out the anchored FRP ribs 4, and completing the anchoring of the FRP ribs 4.
Example 5
As shown in FIG. 5, the load-displacement curves in the figure all increase linearly until the FRP tendon undergoes a sudden brittle failure, which indicates that the internal stress of the extrusion-friction type anchorage is uniform and there is no slippage between the FRP tendon and the anchorage during the loading process. The four samples are tested repeatedly, the FRP ribs are all in a bursting failure mode, and the final failure load discreteness is small, so that the stress concentration on the rod body is not generated at the end part of the anchor, and the anchor has the advantages of good stability and high anchoring efficiency.
Claims (7)
1. A reusable extrusion-friction type anchoring system for FRP bars, characterized in that: the steel wedge type anchor steel pipe comprises an anchor steel pipe (3), a steel wedge block (2) and an aluminum sleeve (1) which are the same in length, wherein the steel wedge block (2) and the aluminum sleeve (1) are in a circular truncated cone shape; the inner hole of the anchoring steel pipe (3) is in a round table shape, the appearance taper of the steel wedge block (2) is consistent with the inner hole taper of the anchoring steel pipe (3), the steel wedge block (2) is positioned in the anchoring steel pipe (3), and the steel wedge block and the anchoring steel pipe are in interference fit; the aluminum oversleeve (1) is positioned inside the steel wedge block (2) and is in interference fit with the steel wedge block; the inner hole of the aluminum sleeve (1) is circular, and the end part of the FRP rib (4) is positioned in the inner hole of the aluminum sleeve (1) and is in interference fit with the inner hole.
2. A reusable squeeze-and-friction type anchoring system for FRP tendons as claimed in claim 1, characterized in that: the steel wedge block (2) is of a radial three-petal structure and is combined to form a circular table with a conical inner hole, and the taper of the inner hole of the steel wedge block (2) is 0.5-1 degrees.
3. A reusable squeeze-and-friction type anchoring system for FRP tendons as claimed in claim 2, characterized in that: the aluminum oversleeve (1) comprises a three-flap structure which is combined to form a round table with a round inner hole; the external taper of the aluminum oversleeve (1) is larger than the internal taper of the steel wedge (2), and the taper difference range is 0.05-0.15 degrees.
4. A reusable squeeze-and-friction type anchoring system for FRP tendons as claimed in claim 3, characterized in that: the taper of the inner hole of the anchoring steel pipe (3) is 1-2 degrees.
5. A method of anchoring FRP ribs derived from a reusable extrusion-friction type anchoring system for FRP ribs according to claim 4, characterized by the steps of:
firstly, carrying out rough treatment on an anchoring end of an FRP (fiber reinforced plastic) rib (4), wherein the FRP rib (4) is a round rib with a smooth surface and a rib, and the diameter is 4-35 mm;
step two, respectively bonding the three-piece structure of the aluminum oversleeve (1) and the corresponding three-piece structure of the steel wedge block (2) together in a point contact manner, and bonding the bonded three-piece structures of the aluminum oversleeve (1) and the steel wedge block (2) at the anchoring end of the FRP rib (4) in a point contact manner in a surrounding manner;
inserting the FRP ribs (4), the aluminum sleeves (1) and the steel wedge blocks (2) into the inner holes of the anchoring steel pipes (3);
fourthly, a limiting groove (7) is formed in the upper plane of the steel frame (8), a limiting buckle (6) is installed on the limiting groove (7), and the lower end of the combined anchoring steel pipe (3) is placed inside the limiting buckle (6) of the steel frame (8);
and step five, starting a press machine, enabling a pressure head (5) to be in contact with the upper plane of the anchoring end of the steel wedge block (2), the aluminum sleeve (1) and the FRP rib (4), pressing into the anchoring steel pipe (3) until the required pressure value is reached, stopping the press machine, removing the pressure, taking out the anchored FRP rib (4), and completing the anchoring of the FRP rib (4).
6. The FRP rib anchoring method according to claim 5, wherein: the outer wall and the inner hole of the aluminum sleeve (2) and the inner hole of the steel wedge (3) are subjected to sand blasting treatment, so that the friction force at the interface of the steel wedge (3), the aluminum sleeve (2) and the FRP rib (4) is increased.
7. The FRP rib anchoring method according to claim 5, wherein: the aluminum oversleeve (1) is made of other soft metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210693594.3A CN115012300A (en) | 2022-06-18 | 2022-06-18 | Reusable extrusion-friction type anchoring system for FRP (fiber reinforced Plastic) ribs and anchoring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210693594.3A CN115012300A (en) | 2022-06-18 | 2022-06-18 | Reusable extrusion-friction type anchoring system for FRP (fiber reinforced Plastic) ribs and anchoring method thereof |
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| CN115012300A true CN115012300A (en) | 2022-09-06 |
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| CN202210693594.3A Pending CN115012300A (en) | 2022-06-18 | 2022-06-18 | Reusable extrusion-friction type anchoring system for FRP (fiber reinforced Plastic) ribs and anchoring method thereof |
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| CN (1) | CN115012300A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2221885A1 (en) * | 1996-11-21 | 1998-05-21 | University Technologies International, Inc. | Prestressing anchorage system for fiber reinforced plastic tendons |
| KR20060000670A (en) * | 2004-06-29 | 2006-01-06 | 서울시립대학교 산학협력단 | Anchor system for structure using frp tendon |
| KR20090041017A (en) * | 2007-10-23 | 2009-04-28 | 한국건설기술연구원 | Anchorage apparatus for frp tendon by sleeve with opening and installation method of the same |
| KR20100066693A (en) * | 2008-12-10 | 2010-06-18 | 한국건설기술연구원 | Anchorage appratus for fiber reinforced polymer plates and the construction method therewith |
| CN103255878A (en) * | 2013-03-08 | 2013-08-21 | 宁波大学 | Novel elastic clamp-ring type anchorage device |
| CN107447757A (en) * | 2017-07-17 | 2017-12-08 | 大连理工大学 | The Extruded anchoring tool and anchoring process of a kind of FRP tendons |
| CN110242066A (en) * | 2019-06-17 | 2019-09-17 | 哈尔滨工业大学 | Anchor tool system and its anchoring process for the fibre reinforced composites body of rod |
| CN113737787A (en) * | 2021-08-23 | 2021-12-03 | 哈尔滨工业大学 | Extrusion-bonding type anchoring system and anchoring method for FRP rod body |
-
2022
- 2022-06-18 CN CN202210693594.3A patent/CN115012300A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2221885A1 (en) * | 1996-11-21 | 1998-05-21 | University Technologies International, Inc. | Prestressing anchorage system for fiber reinforced plastic tendons |
| KR20060000670A (en) * | 2004-06-29 | 2006-01-06 | 서울시립대학교 산학협력단 | Anchor system for structure using frp tendon |
| KR20090041017A (en) * | 2007-10-23 | 2009-04-28 | 한국건설기술연구원 | Anchorage apparatus for frp tendon by sleeve with opening and installation method of the same |
| KR20100066693A (en) * | 2008-12-10 | 2010-06-18 | 한국건설기술연구원 | Anchorage appratus for fiber reinforced polymer plates and the construction method therewith |
| CN103255878A (en) * | 2013-03-08 | 2013-08-21 | 宁波大学 | Novel elastic clamp-ring type anchorage device |
| CN107447757A (en) * | 2017-07-17 | 2017-12-08 | 大连理工大学 | The Extruded anchoring tool and anchoring process of a kind of FRP tendons |
| CN110242066A (en) * | 2019-06-17 | 2019-09-17 | 哈尔滨工业大学 | Anchor tool system and its anchoring process for the fibre reinforced composites body of rod |
| CN113737787A (en) * | 2021-08-23 | 2021-12-03 | 哈尔滨工业大学 | Extrusion-bonding type anchoring system and anchoring method for FRP rod body |
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