CN103352539A - Prestress fiber reinforced polymer cable anchoring device adopting grooved clamping piece - Google Patents
Prestress fiber reinforced polymer cable anchoring device adopting grooved clamping piece Download PDFInfo
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- CN103352539A CN103352539A CN2013102917913A CN201310291791A CN103352539A CN 103352539 A CN103352539 A CN 103352539A CN 2013102917913 A CN2013102917913 A CN 2013102917913A CN 201310291791 A CN201310291791 A CN 201310291791A CN 103352539 A CN103352539 A CN 103352539A
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- rope
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- clamping plate
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Abstract
The invention discloses a prestress fiber reinforced polymer cable anchoring device adopting a grooved clamping piece, which includes an anchoring block, a polymer cable anchor clamping piece arranged in each opening of the anchoring block, and fiber reinforced polymer cables arranged in each polymer anchor clamping piece, wherein each polymer cable anchor clamping piece adopts an integral structure, and both ends of each polymer cable anchor clamping piece are longer than the opening of the anchoring block; n vertical grooves are formed in the main body of each polymer cable anchor clamping piece. The anchoring device can be used for anchoring the FRP (fiber reinforced polymer) cables, a certain angle is kept between the front part on the outer surface of the clamping piece to the bottom, so as to be matched with the inner surface of the anchoring block, the inner surface of the anchoring block subjected to drawing force exerts extrusion force on the clamping piece, so that the clamping pieces are extruded and deformed at the grooves, can clamp the polymer cables as the inner diameter is reduced, the clamping pieces are longer than the anchoring block, the front part and the bottom of the clamping pieces are exposed and longer than the anchoring block for a certain length, as a result, forward and backward anchor retreat can be realized.
Description
Technical field
The present invention relates to a kind of clamping anchorage device that is applied to the pre-stress FRP rope.
Background technology
The FRP muscle is to be solidified through the matching tree impregnate with tallow by specific technique by some strands of continuous tows to form (English Fiber Reinforced Polymer is abbreviated as FRP), and the muscle material is divided into CFRP, GFRP, AFRP, BFRP etc. by material type.The FRP material has the performances such as lightweight, tensile strength be high, corrosion-resistant, is applied to can produce preferably benefit in the Cable Structure.
The use of FRP material is progressively promoted, and give full play to high-strength, the corrosion resistant characteristics of FRP rope and must be aided with a kind of efficient clamping ground tackle.Existing pre-stress FRP rope anchor device mainly adopts perfusion cohesive body method, the whole interior rear encapsulating of sleeve that inserts behind the FRP rope bunchy, adhesion stress and sleeve shaped by colloid are integral, then clamp sleeve by bolt thread or intermediate plate and form anchoring, this kind method anchor device cannot be reused.In addition, if single rope slippage is extracted in the bunchy rope, bonding colloid inside occur the cavity then whole anchor device namely lost efficacy, affect functional performance or the safety of total.
Summary of the invention
Technical problem:In order to solve the existing not reproducible use of FRP rope anchor device, be out of shape the situation inhomogeneous, that anchoring efficiency is low, the invention provides a kind of intermediate plate and keep whole, front and back distortion evenly, pre-stress fibre reinforced composite rope anchor device that can reusable employing fluting intermediate plate.
Technical scheme:The pre-stress fibre reinforced composite rope anchor device of employing fluting intermediate plate of the present invention, comprise anchor block, be arranged on the composite material rope anchoring clamping plate in the perforate of anchor block and be arranged on fibre reinforced composites rope in the composite material rope anchoring clamping plate, composite material rope anchoring clamping plate is the perforate length that overall structure and two ends all exceed anchor block, body at composite material rope anchoring clamping plate is provided with n longitudinally fluting, wherein n is even number and n 〉=4, fluting is from an end opening of composite material rope anchoring clamping plate body, distance at the distance body other end is the sealing of body length 5%-15% position, n fluting is symmetrical with the axis centre of composite material rope anchoring clamping plate, and the opening direction of two adjacent flutings is opposite.
In the preferred version of the present invention, the composite material rope anchoring clamping plate that arranges on the anchor block is a plurality of, and a plurality of composite material rope anchoring clamping plates are symmetrical centered by the centre of form of anchor block cross section, each anchoring clamping plate gripping fibers composite material bar material that works independently.
Beneficial effect:The present invention compared with prior art has the following advantages:
(1) existing FRP rope anchor device all uses the perforate of anchor block frustum, FRP rope elder generation bunchy inserts perforate and pours into cohesive body and forms whole rear anchoring, this anchor device is bonded to integral body to anchor block and FRP rope by the cohesive body material, device has disposable, cannot reuse, the present invention adopts the intermediate plate clamping, can move back anchor, reuses;
(2) after the therein single FRP rope slippage inefficacy of existing cohesive body group anchor mode, the inner emptying aperture that forms of cohesive body, other ropes just can't form effective clamping, whole bundle rope namely lost efficacy, but intermediate plate clamping independent role of the present invention, when single rope lost efficacy, do not affect the effect of other ropes, and rope is changed in single part in the course of the work;
(3) the pre existing prestress steel strand intermediate plate perforation of slotting up and down, can not the keeping clip globality, the intermediate plate synchronism was difficult for guaranteeing when intermediate plate pushed anchor block, cause clamping efficient low, intermediate plate of the present invention is staggered fluting up and down, and not exclusively connect, keeping chucking power to keep simultaneously uniformly up and down globality, improved anchoring efficiency;
(4) existing intermediate plate band tooth can damage rope during clamping, and the inner friction mode that increases of intermediate plate of the present invention is processed, and does not damage the FRP rope.
Description of drawings
Fig. 1 is that clip side is to the D-D sectional drawing;
Fig. 2 is that clip side is to the E-E sectional drawing;
Fig. 3 is composite material rope and intermediate plate effect schematic diagram;
Fig. 4 is intermediate plate A-A cross section;
Fig. 5 is intermediate plate B-B cross section;
Fig. 6 is intermediate plate C-C cross section;
Fig. 7 is three anchor anchor blocks of rectangle plan view;
Fig. 8 is three anchor anchor blocks of rectangle intermediate plate anchoring schematic diagram;
Fig. 9 is three anchor anchor block plan views of annular;
Figure 10 is annular group anchor anchor block plan view;
Have among the figure: anchor block 1, composite material rope anchoring clamping plate 2, fibre reinforced composites rope 3, fluting 21.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is done further and to specify.
Be provided with n on the body of composite material rope anchoring clamping plate 2 and slot longitudinally 21, wherein n is even number and n 〉=4, fluting 21 end openings from composite material rope anchoring clamping plate 2 bodies, distance at the distance body other end is the position sealing of body length 5%-15%, n fluting 21 is symmetrical with the axis centre of composite material rope anchoring clamping plate 2, the opening direction of two adjacent flutings 21 is opposite, is the schematic diagram of 4 fluting intermediate plates as depicted in figs. 1 and 2.
When the composite material rope anchoring clamping plate 2 that arranges on the anchor block 1 was a plurality of, a plurality of composite material rope anchoring clamping plates 2 were symmetrical centered by the centre of form of anchor block 1 cross section.The anchor block section form is the regular geometric figure, such as rectangle, and square, circle, oval etc.
Embodiment 1: the anchoring of single fiber reinforced composite rope
Single composite material rope anchoring implementation process of the present invention is as follows: fibre reinforced composites rope 3 is passed structure and anchor block 1, be enclosed within composite material rope anchoring clamping plate 2 on the rope and advance in the hole of anchor block 1, put auxiliary hold-down ring in the intermediate plate end, use jack tension fibre reinforced composites rope 3 simultaneously with composite material rope anchoring clamping plate 2 to anchor block 1 interior push-tight, to required prestressing force, screw hold-down ring, lay down the pulling force of jack, fibre reinforced composites rope 3 bounces back under prestressing force and tightens up, drive composite material rope anchoring clamping plate 2, make between composite material rope anchoring clamping plate 2 and the anchor block 1 and combine closely.Fig. 3 is fibre reinforced composites rope 3 and composite material rope anchoring clamping plate 2 effect schematic diagrames, F is the pretension in the fibre reinforced composites rope 3 among the figure, σ is the extruding force of 1 pair of intermediate plate 2 of anchor block, and τ is the frictional force of 2 pairs of fibre reinforced composites ropes 3 of composite material rope anchoring clamping plate.
2: three fibre reinforced composites rope 3 anchorings in the rectangle anchor block of embodiment
The rectangle anchor block as shown in Figure 6, the same example of the anchoring process of every FRP rope is described, three anchoring schematic diagrames as shown in Figure 7.
3: three fibre reinforced composites rope 3 anchorings in annular anchor block of embodiment
The annular anchor block as shown in Figure 8, the same example of the anchoring process of every FRP rope is described.
Embodiment 4: 3 anchorings in annular anchor block of plurality of fibers reinforced composite rope
The annular anchor block as shown in Figure 9, the same example of the anchoring process of every FRP rope is described.
Claims (2)
- One kind adopt the fluting intermediate plate pre-stress fibre reinforced composite rope anchor device, this anchor device comprises anchor block (1), be arranged on the composite material rope anchoring clamping plate (2) in the perforate of described anchor block (1) and be arranged on fibre reinforced composites rope (3) in the described composite material rope anchoring clamping plate (2), described composite material rope anchoring clamping plate (2) all exceeds the perforate length of anchor block (1) for overall structure and two ends, body at composite material rope anchoring clamping plate (2) is provided with n longitudinally fluting (21), wherein n is even number and n 〉=4, described fluting (21) is from an end opening of composite material rope anchoring clamping plate (2) body, distance at the distance body other end is the sealing of body length 5%-15% position, n fluting (21) is symmetrical with the axis centre of composite material rope anchoring clamping plate (2), and the opening direction of two adjacent flutings (21) is opposite.
- 2. the pre-stress fibre reinforced composite rope anchor device of employing according to claim 1 fluting intermediate plate, it is characterized in that, the upper composite material rope anchoring clamping plate (2) that arranges of described anchor block (1) is a plurality of, described a plurality of composite material rope anchoring clamping plates (2) are symmetrical centered by the centre of form of anchor block (1) cross section, each anchoring clamping plate (2) gripping fibers composite material rope that works independently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102917913A CN103352539A (en) | 2013-07-12 | 2013-07-12 | Prestress fiber reinforced polymer cable anchoring device adopting grooved clamping piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102917913A CN103352539A (en) | 2013-07-12 | 2013-07-12 | Prestress fiber reinforced polymer cable anchoring device adopting grooved clamping piece |
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| CN103352539A true CN103352539A (en) | 2013-10-16 |
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| CN2013102917913A Pending CN103352539A (en) | 2013-07-12 | 2013-07-12 | Prestress fiber reinforced polymer cable anchoring device adopting grooved clamping piece |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2573773Y (en) * | 2002-07-19 | 2003-09-17 | 东南大学 | Prestressed FRP reinforcement sheet fastening body device |
| CN2753839Y (en) * | 2004-11-19 | 2006-01-25 | 北京工业大学 | Prestressed steel-structure multiple stretched-draw ground tackle |
| JP2007255149A (en) * | 2006-03-24 | 2007-10-04 | Kazuo Kazama | Tensional material anchoring tool and tensional material anchoring method |
| KR20090041017A (en) * | 2007-10-23 | 2009-04-28 | 한국건설기술연구원 | Anchorage apparatus for frp tendon by sleeve with opening and installation method of the same |
| CN101603353A (en) * | 2009-06-26 | 2009-12-16 | 湖南大学 | A kind of composite anchorage that is used for anchoring multiple fibre reinforced plastic twisted wire muscle or drag-line |
| CN102747811A (en) * | 2012-07-06 | 2012-10-24 | 宁波大学 | Carbon fiber reinforced polymer rope anchor |
| CN203412200U (en) * | 2013-07-12 | 2014-01-29 | 东南大学 | Slotting clamping piece prestress fiber reinforcing compound material rope anchoring device |
-
2013
- 2013-07-12 CN CN2013102917913A patent/CN103352539A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2573773Y (en) * | 2002-07-19 | 2003-09-17 | 东南大学 | Prestressed FRP reinforcement sheet fastening body device |
| CN2753839Y (en) * | 2004-11-19 | 2006-01-25 | 北京工业大学 | Prestressed steel-structure multiple stretched-draw ground tackle |
| JP2007255149A (en) * | 2006-03-24 | 2007-10-04 | Kazuo Kazama | Tensional material anchoring tool and tensional material anchoring method |
| KR20090041017A (en) * | 2007-10-23 | 2009-04-28 | 한국건설기술연구원 | Anchorage apparatus for frp tendon by sleeve with opening and installation method of the same |
| CN101603353A (en) * | 2009-06-26 | 2009-12-16 | 湖南大学 | A kind of composite anchorage that is used for anchoring multiple fibre reinforced plastic twisted wire muscle or drag-line |
| CN102747811A (en) * | 2012-07-06 | 2012-10-24 | 宁波大学 | Carbon fiber reinforced polymer rope anchor |
| CN203412200U (en) * | 2013-07-12 | 2014-01-29 | 东南大学 | Slotting clamping piece prestress fiber reinforcing compound material rope anchoring device |
Non-Patent Citations (1)
| Title |
|---|
| 张继文等: "预应力FRP筋锚具的研发", 《第三届全国FRP学术交流会议论文集》 * |
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| PB01 | Publication | ||
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Application publication date: 20131016 |