CN101235663A - Clip type anchorage applying to carbon fiber reinforced polymeric material prestressing force rib - Google Patents
Clip type anchorage applying to carbon fiber reinforced polymeric material prestressing force rib Download PDFInfo
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- CN101235663A CN101235663A CNA2008100196789A CN200810019678A CN101235663A CN 101235663 A CN101235663 A CN 101235663A CN A2008100196789 A CNA2008100196789 A CN A2008100196789A CN 200810019678 A CN200810019678 A CN 200810019678A CN 101235663 A CN101235663 A CN 101235663A
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- anchor ring
- polymeric material
- prestressed reinforcement
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Abstract
The invention discloses a gripper anchorage device which is used on carbon fiber reinforced polymeric material prestressed reinforcement, which comprises an anchor ring and a wedge clamping piece which is arranged in the anchor ring, wherein a fastening piece is further arranged on the outer side of the anchor ring, the fastening piece is used to fix the anchor ring which can move up and down along the fastening piece on a position, and is an anchoring nut which is connected with the anchor ring through threads. Compared with the prior art, the anchorage device of the invention arranges the fastening piece on the outer side of the anchor ring which moves along the prestressed reinforcement under the effect of a pulling jack when the prestressed reinforcement CFRP is stretched, and the prestressed reinforcement is stopped from stretching when the prestressed reinforcement meets the given prestress. The fastening piece which is arranged on the outer side of the anchor ring is regulated, and the anchor ring is anchored on the given position, thereby realizing the stretching anchorage technology of the prestressed reinforcement, and the whole technology operation is simple and convenient, and is easy to be constructed.
Description
Technical field
The present invention relates to a kind of strand tapered anchorage, directly apply to the technical field of civil engineering post-tensioned prestressing fiber reinforced polymeric material muscle anchor device.
Background technology
Because carbon fiber reinforced polymeric material (CFRP) presstressed reinforcing steel is the orthotropic material, its horizontal compressive strength and shear strength are lower, therefore, traditional prestressed reinforcement ground tackle will not be suitable for the anchoring of CFRP presstressed reinforcing steel, otherwise will cause its premature failure owing to Prestressed CFRP muscle shear strength is low in the anchorage zone, do not reach the intended purposes of prestressed reinforced concrete construction, this also is one of its key factor that can not be used widely in prestressed reinforced concrete construction at present of restriction.So the CFRP presstressed reinforcing steel will be applied to post-tensioned concrete structure, the development of ground tackle is a urgent problem.In recent years, various countries are carrying out the research and development of CFRP presstressed reinforcing steel Special ground tackle always.Stressed operating principle according to these ground tackles can be divided into mechanical grip formula ground tackle and bond type anchorage two big classes basically, and derives many ground tackles system thus.The anchoring that existing prestressing force strand tapered anchorage is applied to the CFRP presstressed reinforcing steel is not very ripe, must adopt supporting special jack during stretch-draw, the ground tackle of this structure, at first stretch-draw must be adopted special jack, the tensioning process complexity, simultaneously, the loss of prestress that causes of presstressed reinforcing steel retraction is also bigger.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, and provides a kind of tensioning process simple and be easy to the strand tapered anchorage of anchoring.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of strand tapered anchorage that is applied to the carbon fiber reinforced polymeric material presstressed reinforcing steel, comprise anchor ring and be arranged on the interior wedge shape intermediate plate of anchor ring, also be provided with a securing member outside described anchor ring, this securing member is used for prolonging the anchor ring that securing member moves up and down and is fixed on a certain position.
Described securing member is the anchoring nut, and this anchoring nut is threaded with anchor ring.
In described intermediate plate, also be provided with a flexible metal conduit layer.
The length of described flexible metal conduit layer is equal to or greater than the length of intermediate plate.
Described flexible metal conduit layer is soft aluminum layer, soft zinc layer or refined lead layer.
Compared with prior art, ground tackle of the present invention has following advantage:
1, ground tackle of the present invention is provided with securing member outside anchor ring, when stretch-draw prestressing force CFRP muscle, anchor ring when presstressed reinforcing steel satisfies predetermined pre-tensioning force, stops stretch-draw in the downward presstressed reinforcing steel axially-movable of the effect of stretch-draw jack, adjusting is arranged on the outer securing member of anchor ring, anchor ring is anchored at preposition, realizes the stretch-draw anchor technology of presstressed reinforcing steel, whole technological operation is simple, convenient, be easy to construction.
2, simultaneously, the securing member of ground tackle of the present invention can be selected the anchoring nut, threading on anchor ring, this external screw thread is used to connect a tension rod, and the other end of tension rod can be connected with common jack, so, after adopting ground tackle of the present invention, when presstressed reinforcing steel is realized tensioning process, need not special jack, reduced equipment cost.
3, ground tackle of the present invention is provided with soft metal layer in intermediate plate, the direct wrap carbon fiber of soft metal layer strengthens the polymeric material presstressed reinforcing steel, intermediate plate acts directly on the soft metal layer, indirect acts on the carbon fiber reinforced polymeric material presstressed reinforcing steel, thereby increased the contact area between carbon fiber reinforced polymeric material presstressed reinforcing steel and the intermediate plate, reduce contact stress, reduced the stress concentration phenomenon in addition.Prove that through test of many times the carbon fiber reinforced polymeric material presstressed reinforcing steel strand tapered anchorage formula that we develop is feasible, can be applicable to actual engineering, has prevented carbon fiber reinforced polymeric material muscle premature failure, and simple in structure.
Description of drawings
Fig. 1 is the structural representation of ground tackle of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated:
As shown in Figure 1, ground tackle of the present invention comprises the anchor ring 4 that is arranged on the anchor plate 6, anchor ring 4 is cylindrical, be processed with a round taper hole at the middle part of anchor ring 4, in this round taper hole, be provided with wedge shape intermediate plate 3, wedge shape intermediate plate 3 can be that two semicircle intermediate plates surround, also can surround by a plurality of small semicircle clevis sheets, also be provided with a flexible metal conduit layer 2 in the inboard of intermediate plate 3, flexible metal conduit layer 2 can be a soft aluminum layer, soft metal layers such as soft zinc layer or refined lead layer, the length of this flexible metal conduit layer 2 is equal to or greater than the length of intermediate plate 3, the outside at anchor ring 4 is processed with external screw thread, anchor ring 4 is connected with an anchoring nut 5 by its outside external screw thread, when tension of prestressed tendon, anchor ring moves upward under the effect of stretch-draw jack, simultaneously, the intermediate plate anchor ring that follows up automatically, clamp the Prestressed CFRP muscle, anchor ring 4 away from anchor plate 6, when presstressed reinforcing steel reaches required prestressing force, stops stretch-draw under the stretching force effect, the external screw thread of anchoring nut 5 by anchor ring 4 is tightened on the anchor ring 4, and anchor ring 4 is fixed on the stretch-draw position, anchoring nut 5 places on the anchor plate 6, applies prestressed purpose thereby member is reached.
Prestressed CFRP muscle strand tapered anchorage is to utilize wedge principle, intermediate plate 3 jacking anchor rings 4, clamps Prestressed CFRP muscle 1 by the stretch-draw jack under bigger lateral pressure and frictional resistance effect.Damage the surface of Prestressed CFRP muscle 1 for the teeth groove that prevents the intermediate plate inboard, cause the inefficacy too early of CFRP muscle in the anchorage zone, between intermediate plate 3 and CFRP presstressed reinforcing steel 1, adopt a kind of soft metal material as transmitting medium, it is soft metal layer 2, increase the contact area between CFRP presstressed reinforcing steel 1 and the intermediate plate 3, reduce contact stress, reduce the stress concentration phenomenon of Prestressed CFRP muscle 1, reach the purpose of anchoring Prestressed CFRP muscle 1.For the further contact area that increases between CFRP presstressed reinforcing steel 1 and the intermediate plate 3, the length of anchor ring 4 and intermediate plate 3 that can also extend, thus further reduce contact stress, improve anchoring strength.
Claims (5)
1, a kind of strand tapered anchorage that is applied to the carbon fiber reinforced polymeric material presstressed reinforcing steel, comprise anchor ring (4) and be arranged on the interior wedge shape intermediate plate (3) of anchor ring (4), it is characterized in that: also be provided with a securing member (5) outside described anchor ring (4), this securing member (5) is used for prolonging the anchor ring (4) that securing member (5) moves up and down and is fixed on a certain position.
2, strand tapered anchorage according to claim 1 is characterized in that: described securing member (5) is an anchoring nut, and this anchoring nut is threaded with anchor ring (4).
3, strand tapered anchorage according to claim 1 and 2 is characterized in that: also be provided with a flexible metal conduit layer (2) in described intermediate plate (3).
4, strand tapered anchorage according to claim 3 is characterized in that: the length of described flexible metal conduit layer (2) is equal to or greater than the length of intermediate plate (3).
5, strand tapered anchorage according to claim 4 is characterized in that described flexible metal conduit layer is soft aluminum layer, soft zinc layer or refined lead layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100196789A CN101235663A (en) | 2008-03-11 | 2008-03-11 | Clip type anchorage applying to carbon fiber reinforced polymeric material prestressing force rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100196789A CN101235663A (en) | 2008-03-11 | 2008-03-11 | Clip type anchorage applying to carbon fiber reinforced polymeric material prestressing force rib |
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| CN101235663A true CN101235663A (en) | 2008-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100196789A Pending CN101235663A (en) | 2008-03-11 | 2008-03-11 | Clip type anchorage applying to carbon fiber reinforced polymeric material prestressing force rib |
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| CN (1) | CN101235663A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477005B (en) * | 2009-01-09 | 2010-12-01 | 同济大学 | Specimen end clipping reinforcement method during FRP rib stress relaxation characteristics test |
| CN101922240A (en) * | 2010-07-16 | 2010-12-22 | 东南大学 | A kind of FRP bar stretching and anchoring device |
| CN101967867A (en) * | 2010-10-27 | 2011-02-09 | 西南交通大学 | Universal clamping piece type anchor for carbon fiber reinforced plastic (CFRP) bars |
| CN102050603A (en) * | 2010-11-12 | 2011-05-11 | 金文成 | High-strength concrete composite material as well as preparation method and application thereof |
| CN102817315A (en) * | 2012-05-22 | 2012-12-12 | 北京交通大学 | Support flexible anchoring system |
| CN102839753A (en) * | 2012-09-07 | 2012-12-26 | 中国人民解放军63983部队 | Anchoring device used between FRP (Fiber Reinforced Plastic) pipe and metal bar |
| CN104110100A (en) * | 2013-12-02 | 2014-10-22 | 成都绿迪科技有限公司 | Steel bar clip pre-stress tensioning anchor block |
| CN104478332A (en) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | Formula of compound reinforced concrete |
| CN104529276A (en) * | 2014-12-13 | 2015-04-22 | 广西科技大学 | Novel formula of partial reinforcement CFRP-PCPs composite bar concrete |
| CN104529278A (en) * | 2014-12-13 | 2015-04-22 | 广西科技大学 | New formula of composite reinforced concrete |
| CN104727487A (en) * | 2015-03-23 | 2015-06-24 | 天津大学 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
| CN106638310A (en) * | 2017-03-05 | 2017-05-10 | 郑州大学 | Efficient steel strand wire stay cable saddle |
| CN108457197A (en) * | 2018-02-01 | 2018-08-28 | 重庆恒佳工程技术咨询有限公司 | A kind of intelligent tensioning just wears formula moveable anchor |
| CN110565547A (en) * | 2019-10-17 | 2019-12-13 | 北京市市政四建设工程有限责任公司 | Inclined leg steel bridge supporting and jacking reinforcing device and method |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
| CN114215275A (en) * | 2021-12-27 | 2022-03-22 | 中铁第一勘察设计院集团有限公司 | Prestressed concrete structure |
| CN115653206A (en) * | 2022-12-22 | 2023-01-31 | 太原轨道交通集团有限公司 | Prestressed carbon fiber reinforced material inner cone type anchorage device and assembling method thereof |
-
2008
- 2008-03-11 CN CNA2008100196789A patent/CN101235663A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477005B (en) * | 2009-01-09 | 2010-12-01 | 同济大学 | Specimen end clipping reinforcement method during FRP rib stress relaxation characteristics test |
| CN101922240A (en) * | 2010-07-16 | 2010-12-22 | 东南大学 | A kind of FRP bar stretching and anchoring device |
| CN101922240B (en) * | 2010-07-16 | 2012-05-09 | 东南大学 | FRP bar stretching and anchoring device |
| CN101967867A (en) * | 2010-10-27 | 2011-02-09 | 西南交通大学 | Universal clamping piece type anchor for carbon fiber reinforced plastic (CFRP) bars |
| CN102050603A (en) * | 2010-11-12 | 2011-05-11 | 金文成 | High-strength concrete composite material as well as preparation method and application thereof |
| CN102050603B (en) * | 2010-11-12 | 2012-11-28 | 金文成 | High-strength concrete composite material as well as preparation method and application thereof |
| CN102817315A (en) * | 2012-05-22 | 2012-12-12 | 北京交通大学 | Support flexible anchoring system |
| CN102839753A (en) * | 2012-09-07 | 2012-12-26 | 中国人民解放军63983部队 | Anchoring device used between FRP (Fiber Reinforced Plastic) pipe and metal bar |
| CN102839753B (en) * | 2012-09-07 | 2014-09-17 | 中国人民解放军63983部队 | Anchoring device used between FRP (Fiber Reinforced Plastic) pipe and metal bar |
| CN104110100A (en) * | 2013-12-02 | 2014-10-22 | 成都绿迪科技有限公司 | Steel bar clip pre-stress tensioning anchor block |
| CN104478332A (en) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | Formula of compound reinforced concrete |
| CN104529276A (en) * | 2014-12-13 | 2015-04-22 | 广西科技大学 | Novel formula of partial reinforcement CFRP-PCPs composite bar concrete |
| CN104529278A (en) * | 2014-12-13 | 2015-04-22 | 广西科技大学 | New formula of composite reinforced concrete |
| CN104727487A (en) * | 2015-03-23 | 2015-06-24 | 天津大学 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
| CN106638310A (en) * | 2017-03-05 | 2017-05-10 | 郑州大学 | Efficient steel strand wire stay cable saddle |
| CN108457197A (en) * | 2018-02-01 | 2018-08-28 | 重庆恒佳工程技术咨询有限公司 | A kind of intelligent tensioning just wears formula moveable anchor |
| CN110565547A (en) * | 2019-10-17 | 2019-12-13 | 北京市市政四建设工程有限责任公司 | Inclined leg steel bridge supporting and jacking reinforcing device and method |
| CN110565547B (en) * | 2019-10-17 | 2020-06-26 | 北京市市政四建设工程有限责任公司 | Inclined leg steel bridge supporting and jacking reinforcing device and method |
| CN112376803A (en) * | 2020-11-18 | 2021-02-19 | 南通装配式建筑与智能结构研究院 | FRP (fiber reinforced plastic) steel strand composite rib anchorage device and anchoring method |
| CN114215275A (en) * | 2021-12-27 | 2022-03-22 | 中铁第一勘察设计院集团有限公司 | Prestressed concrete structure |
| CN115653206A (en) * | 2022-12-22 | 2023-01-31 | 太原轨道交通集团有限公司 | Prestressed carbon fiber reinforced material inner cone type anchorage device and assembling method thereof |
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Open date: 20080806 |