CN108221666A - A kind of compound anchorage of FRP tendons - Google Patents
A kind of compound anchorage of FRP tendons Download PDFInfo
- Publication number
- CN108221666A CN108221666A CN201711460591.0A CN201711460591A CN108221666A CN 108221666 A CN108221666 A CN 108221666A CN 201711460591 A CN201711460591 A CN 201711460591A CN 108221666 A CN108221666 A CN 108221666A
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- CN
- China
- Prior art keywords
- metal cylinder
- anchor ring
- anchorage
- frp tendons
- tendons
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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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 kind of compound anchorages of FRP tendons, are related to anchoring field, and it is stifled which includes anchor ring, metal cylinder and end；The anchor ring center offers pyramid type through-hole；Metal cylinder is installed, and the both ends of metal cylinder protrude from anchor ring in the cone-shaped hole of anchor ring；The metal cylinder is taper sky cylinder；Metal cylinder is provided with CFRP tendons on center, and CFRP tendons are passed through metal cylinder, injects adhesive glue therebetween and blocks up positioning with end, blocks, forms FRP tendons sub-assembly.It, can tensioning after assembly over-assemble anchor ring, application pretightning force after the completion of maintenance.The anchorage makes and easy to operate, and anchoring efficiency is high, and anchorage length is short, can be applied to reinforcing engineering.
Description
Technical field
The present invention relates to a kind of anchors by lacing wire, especially anchor single FRP tendons (fibre reinforced composites)
Compound anchor.
Background technology
The lateral shear resistance of FRP tendons (fibre reinforced composites) is weaker, and current existing FRP tendons anchorage mainly has bonding
Type and intermediate plate type.The anchoring of binding type anchorage is mainly by the cohesive force on cementing medium and muscle material surface so needing larger anchor cylinder；
Intermediate plate type anchorage, to the extruding force of muscle material, so circumference stress concentration can be generated, easily crushes muscle material mainly by intermediate plate.
Employing binding type anchorage positioned at the domestic seat of honour CFRP cable stayed-cable bridges of Jiangsu University, (document is shown in：CFRP suspension cables
The experiment of anchorage grinds that (plum sunflower, Lv Zhitao, Zhang Jiwen wait static Test Research [J] bridges of .CFRP Stay Cable Anchors to build
If 2005,2005 (4):20-23.) and research (Lv Zhitao, plum sunflower the country seat of honour CFRP of domestic seat of honour CFRP cable-stayed bridges
Research [J] civil engineering journals of cable stayed-cable bridge, 2007,40 (1):54-59.)), which can carry out FRP tendons
Effective anchoring, but complicated construction technique, volume is big, inconvenient for use.
Invention content
In order to overcome existing single FRP tendons anchorage anchoring efficiency is not high, anchorage length is larger, anchoring complex operation,
The deficiency of bending and eccentric tension destruction easily occurs during tensioning, anchorage of the invention not only can carry out effective anchor to FRP tendons
Gu while there is shorter anchorage bond length, operating procedure is simple.
The present invention is achieved by following technical solution：
A kind of compound anchorage of FRP tendons, it is stifled which includes anchor ring, metal cylinder and end；The anchor ring center offers
Pyramid type through-hole；Metal cylinder is installed, and the both ends of metal cylinder protrude from anchor ring in the cone-shaped hole of anchor ring；The metal
Cylinder is taper sky cylinder；Metal cylinder is provided with CFRP tendons on center.
Further, gap fills cementing medium between the CFRP tendons and metal cylinder.
Further, gluing causes end is stifled to be fixed with metal cylinder in two end section of metal cylinder；The end is blocked up as annulus
Shape, centre set a through-hole, which is more than FRP tendons outer diameter.
Further, the round shape anchor ring interior smooth processing, the processing of metal cylinder rough inner surfaceization.
Further, the metal cylinder taper inclination angle is 3 °~4 °, and the material of metal cylinder is mild steel.
Further, the anchor ring is circle.
Further, the assembly that the metal cylinder, cementing medium and CFRP tendons are formed, the assembly are wedge shape with anchor ring
With reference to.
Further, it is provided with billet on the anchor ring end face.
Advantageous effect：
1. compound anchorage is different from the maximum of conventional compound anchorage：Intermediate plate is omitted, plays the Inner of cone-shaped metal cylinder
Cone acts on, and follows up in anchor ring during tension, and the thickness of metal cylinder is in the range of 3mm~4mm, and material is mild steel, is
In order to guarantee to generate enough circumferential compression, can finally achieve the effect that strengthen anchoring.The component of this compound anchorage
Quantity is few, and assembling is simpler.
2.FRP muscle passes through the metal cylinder of certain length, injects cementing medium therebetween, and by holding stifled positioning, blocking, formed
FRP tendons sub-assembly；After maintenance, assembly is combined with round anchor ring wedge shape, it is pre- it is next can tensioning.Due to the work of cementing medium
With, weaken circumference stress concentration, avoid crushing muscle material.The inner cone delayed action of metal cylinder load-bearing end cementing medium and muscle material
Bond damage, improve the overall effect and anchoring efficiency of cementing medium.
3. the compound anchorage can weaken circumference stress concentration, anchoring efficiency is high, reduces anchor length.It grasps simultaneously
Make simply, to be easy to engineer application.
Description of the drawings
Fig. 1 is the vertical section structural map that compound anchorage is implemented；
Fig. 2 is the I-I partial sectional views of Fig. 1；
Fig. 3 is that structure diagram is blocked up at the end in Fig. 1.
Reference numeral is as follows：
1-FRP muscle, 2- cementing mediums, 3- anchor rings, 4- metal cylinders, 5- are blocked up at end, 6- billets.
Specific embodiment
To be understood the present invention is further, now it is described further below in conjunction with the accompanying drawings.
Fig. 1 is the longitudinal sectional drawing that compound anchorage is implemented, the anchorage include the metal cylinder 4 of taper, circular anchor ring 3,
Cementing medium 2, end stifled 5；It is cone barrel inside round anchor ring, inner wall smooth processing, metal cylinder is tapered cone cylinder, inner wall coarse
Processing, there are 0.1 °~0.3 ° of differential seat angles between round anchor ring 3 and metal cylinder 4.
Fig. 2 is I-I sectional views, and 4 cross section of cone-shaped metal cylinder is annular shape, and FRP tendons 1 are located at center, center gap
The full cementing medium 2 of group, cementing medium 2 need to be conserved to being fully cured.
Fig. 3 is the stifled structural map in end, and end stifled 5 is annular shape, and centre sets a through-hole, to ensure that FRP tendons 1 are located at centre bit
Put, through-hole diameter is more bigger than 1 outer diameter of FRP tendons, by 4 liang of end sections of metal cylinder of taper gluing fixing end block up 5.
In implementation process, FRP tendons 1 are passed through to the metal cylinder 4 of the taper of certain length, cementing medium 2 are injected therebetween, by end
Stifled 5 are fixed on 4 both ends of metal cylinder of taper, form FRP tendons sub-assembly.After maintenance, on assembly, circular anchor is put on
Ring 3, billet 6, on billet 6 apply pretightning force after, you can carry out tensioning.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of compound anchorage of FRP tendons, it is characterised in that：It is stifled (5) that the anchorage includes anchor ring (3), metal cylinder (4) and end；
Anchor ring (3) center offers round tube hole；Metal cylinder (4), and the two of metal cylinder (4) are installed in the round tube hole of anchor ring (3)
End protrudes from anchor ring (3)；The metal cylinder (4) is taper sky cylinder；CFRP tendons (1) are provided on metal cylinder (4) center.
2. the compound anchorage of FRP tendons according to claim 1, it is characterised in that：The CFRP tendons (1) and metal cylinder
(4) gap fills cementing medium (2) between.
3. the compound anchorage of FRP tendons according to claim 2, it is characterised in that：In (4) two end section of metal cylinder
Gluing so that end stifled (5) and metal cylinder (4) are fixed；(5) are blocked up as annular shape in the end, and centre sets a through-hole, and the through-hole diameter is big
In FRP tendons (1) outer diameter.
4. the compound anchorage of FRP tendons according to claim 1, it is characterised in that：Described circle anchor ring (3) interior smooth
Processing, the processing of metal cylinder (4) rough inner surfaceization.
5. the compound anchorage of FRP tendons according to claim 1, it is characterised in that：Metal cylinder (4) the taper inclination angle is
3 °~4 °, the material of metal cylinder (4) is mild steel.
6. the compound anchorage of FRP tendons according to claim 1, it is characterised in that：The anchor ring (3) is circle, internal
Circular hole has cone angle.
7. the compound anchorage of FRP tendons according to claim 1, it is characterised in that：The metal cylinder (4), cementing medium
(2) and the assembly of CFRP tendons (1) formation, the assembly are combined with anchor ring (3) for wedge shape.
8. the compound anchorage of FRP tendons according to claim 7, it is characterised in that：It is set on (3) one side end face of anchor ring
It is equipped with billet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460591.0A CN108221666B (en) | 2017-12-28 | 2017-12-28 | Compound ground tackle is used to FRP muscle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460591.0A CN108221666B (en) | 2017-12-28 | 2017-12-28 | Compound ground tackle is used to FRP muscle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108221666A true CN108221666A (en) | 2018-06-29 |
| CN108221666B CN108221666B (en) | 2020-06-26 |
Family
ID=62645734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711460591.0A Active CN108221666B (en) | 2017-12-28 | 2017-12-28 | Compound ground tackle is used to FRP muscle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108221666B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356029A (en) * | 2018-11-27 | 2019-02-19 | 长安大学 | A kind of compound anchorage of CFRP tendons pre-extrusion |
| CN109577560A (en) * | 2018-11-07 | 2019-04-05 | 同济大学 | A kind of fixing end p-type anchorage |
| CN109838038A (en) * | 2019-01-11 | 2019-06-04 | 东南大学 | A kind of prestressing force answers material muscle composite anchorage and its forming method |
| 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 |
Citations (5)
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|---|---|---|---|---|
| KR100944199B1 (en) * | 2009-07-22 | 2010-02-24 | 삼진스틸산업(주) | Prestressed concrete anchor body structure using together poly bar nail |
| CN202323709U (en) * | 2011-09-21 | 2012-07-11 | 江苏大学 | Composite type anchor group for FRP (fiber reinforce plastic) ribs |
| CN102747812A (en) * | 2012-07-06 | 2012-10-24 | 宁波大学 | Fiber reinforced composite rib/ cable anchorage |
| CN204282649U (en) * | 2014-11-28 | 2015-04-22 | 长安大学 | A kind of CFRP muscle binding type ground tackle |
| CN106192754A (en) * | 2016-08-29 | 2016-12-07 | 智性纤维复合加固南通有限公司 | A kind of FRP inhaul cable anchorage and preparation method thereof |
-
2017
- 2017-12-28 CN CN201711460591.0A patent/CN108221666B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100944199B1 (en) * | 2009-07-22 | 2010-02-24 | 삼진스틸산업(주) | Prestressed concrete anchor body structure using together poly bar nail |
| CN202323709U (en) * | 2011-09-21 | 2012-07-11 | 江苏大学 | Composite type anchor group for FRP (fiber reinforce plastic) ribs |
| CN102747812A (en) * | 2012-07-06 | 2012-10-24 | 宁波大学 | Fiber reinforced composite rib/ cable anchorage |
| CN204282649U (en) * | 2014-11-28 | 2015-04-22 | 长安大学 | A kind of CFRP muscle binding type ground tackle |
| CN106192754A (en) * | 2016-08-29 | 2016-12-07 | 智性纤维复合加固南通有限公司 | A kind of FRP inhaul cable anchorage and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577560A (en) * | 2018-11-07 | 2019-04-05 | 同济大学 | A kind of fixing end p-type anchorage |
| CN109356029A (en) * | 2018-11-27 | 2019-02-19 | 长安大学 | A kind of compound anchorage of CFRP tendons pre-extrusion |
| CN109356029B (en) * | 2018-11-27 | 2024-05-03 | 长安大学 | CFRP rib pre-extrusion composite anchorage device |
| CN109838038A (en) * | 2019-01-11 | 2019-06-04 | 东南大学 | A kind of prestressing force answers material muscle composite anchorage and its forming method |
| CN109838038B (en) * | 2019-01-11 | 2023-12-01 | 东南大学 | Prestressed composite bar composite anchorage and forming method thereof |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108221666B (en) | 2020-06-26 |
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