CN201162311Y - Clip type anchorage used for carbon fiber reinforced polymeric material pre-stress tendon - Google Patents
Clip type anchorage used for carbon fiber reinforced polymeric material pre-stress tendon Download PDFInfo
- Publication number
- CN201162311Y CN201162311Y CNU2008200328919U CN200820032891U CN201162311Y CN 201162311 Y CN201162311 Y CN 201162311Y CN U2008200328919 U CNU2008200328919 U CN U2008200328919U CN 200820032891 U CN200820032891 U CN 200820032891U CN 201162311 Y CN201162311 Y CN 201162311Y
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- Prior art keywords
- anchor ring
- prestressed
- tendon
- polymeric material
- intermediate plate
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Abstract
The utility model discloses a clamping piece type anchorage device which is applied to a prestressed carbon fibre reinforced polymeric material (CFRP) tendon. The anchorage device comprises an anchor ring and a wedge-shaped clamping piece arranged in the anchor ring; the fastening piece, which is arranged outside the anchor ring, is used to fix the anchor ring moving up and own along the fastening piece at a certain position; the fastening piece is an anchoring nut, which is screwed on the anchor ring. Compared with the prior art, the anchorage device is provided with the fastening piece arranged outside the anchor ring; when the prestressed CFRP tendon is tensioned, the anchor ring axially moves along the prestressed tendon under the function of a tensioning jack; when the prestressed tendon is tensioned until a preset prestress, tensioning is stopped, and the fastening piece arranged outside the anchor ring is adjusted until the anchor ring is anchored at a preset position; consequently, the tensioning and anchoring process of the prestressed tendon is realized; the operation of the whole process is simple and convenient, so construction is convenient.
Description
Technical field
The utility model relates to a kind of strand tapered anchorage, directly applies 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 in the utility model 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 utility model 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, the utility model ground tackle has following advantage:
1, the utility model ground tackle 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 the utility model ground tackle 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 utility model, when presstressed reinforcing steel is realized tensioning process, need not special jack, reduced equipment cost.
3, the utility model ground tackle 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 fiber reinforced polymeric material muscle premature failure, and simple in structure.
Description of drawings
Fig. 1 is the structural representation of the utility model ground tackle.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated:
As shown in Figure 1, the utility model ground tackle 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 pre-stress FRP 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 |
|---|---|---|---|
| CNU2008200328919U CN201162311Y (en) | 2008-03-11 | 2008-03-11 | Clip type anchorage used for carbon fiber reinforced polymeric material pre-stress tendon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200328919U CN201162311Y (en) | 2008-03-11 | 2008-03-11 | Clip type anchorage used for carbon fiber reinforced polymeric material pre-stress tendon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162311Y true CN201162311Y (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200328919U Expired - Fee Related CN201162311Y (en) | 2008-03-11 | 2008-03-11 | Clip type anchorage used for carbon fiber reinforced polymeric material pre-stress tendon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162311Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575257A (en) * | 2017-09-01 | 2018-01-12 | 哈尔滨工业大学 | Anchor tool system and its anchoring process for fibre-reinforced high molecular material bar |
| CN107708948A (en) * | 2015-06-19 | 2018-02-16 | 东京制纲株式会社 | The tensioning method and wedge of continuous lod material tensioning apparatus, continuous lod material |
| CN114100093A (en) * | 2021-11-09 | 2022-03-01 | 杭州电子科技大学 | Threading device for badminton racket |
-
2008
- 2008-03-11 CN CNU2008200328919U patent/CN201162311Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107708948A (en) * | 2015-06-19 | 2018-02-16 | 东京制纲株式会社 | The tensioning method and wedge of continuous lod material tensioning apparatus, continuous lod material |
| US10316517B2 (en) | 2015-06-19 | 2019-06-11 | Tokyo Rope Manufacturing Co., Ltd. | Continuous fiber reinforcing material tension apparatus, continuous fiber reinforcing material tension method, and wedge body |
| CN107708948B (en) * | 2015-06-19 | 2019-10-11 | 东京制纲株式会社 | The tensioning method and wedge of continuous fiber reinforcement material tensioning apparatus, continuous fiber reinforcement material |
| CN107575257A (en) * | 2017-09-01 | 2018-01-12 | 哈尔滨工业大学 | Anchor tool system and its anchoring process for fibre-reinforced high molecular material bar |
| CN107575257B (en) * | 2017-09-01 | 2019-04-16 | 哈尔滨工业大学 | The anchoring process of anchor tool system for fibre-reinforced high molecular material bar |
| CN114100093A (en) * | 2021-11-09 | 2022-03-01 | 杭州电子科技大学 | Threading device for badminton racket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20110311 |