CN2573772Y

CN2573772Y - Prestressed FRP reinforcement adhering fastening body device

Info

Publication number: CN2573772Y
Application number: CN 02242610
Authority: CN
Inventors: 张继文; 吕志涛; 谢正元; 关炳良; 李金根
Original assignee: LIUZHOU CONSTRUCTION MACHINERY FACTORY GENERAL; Southeast University
Current assignee: LIUZHOU CONSTRUCTION MACHINERY FACTORY GENERAL; Southeast University
Priority date: 2002-07-19
Filing date: 2002-07-19
Publication date: 2003-09-17
Anticipated expiration: 2012-07-19

Abstract

The utility model relates to a prestressed FRP reinforcement adhering and anchoring body device which is composed of a prestressed non-metal fiber reinforcement 1, carbon fiber threads 5, a spiral reinforcement 4, adhering resins 6 and an anchor cup 2, wherein, the cup forms a column body shape of which the outer circular surface is provided with screw threads and is sheathed with a nut, and the inner of the anchor cup is provided with a conic or cylindrical groove. The inner surface of the groove is rugged and uneven, and the bottom of the groove is provided with a pore where the prestressed non-metal fiber reinforcement comprising a carbon fiber reinforcement, an aramid fiber reinforcement and an FBO fiber reinforcement penetrates through and is harmoniously colligated on the spiral reinforcement by the carbon fiber threads; the integral prestressed non-metal fiber reinforcement is positioned in the conic or cylindrical groove on the anchor cup, and the inner of the groove is pressure-filled with the adhering resins. Because of the adoption of the non-metal fiber reinforcement, the anchoring device has the advantages of high elastic modulus, excellent climate resisting property, good anticorrosion property, high intensity, light weight, reduced dimensions and self-weight of structural members, good fatigue resisting performance and improved safety and stability of structural members, and because the spiral reinforcement is used as a steel pole frame, the utility model also has the advantages of firm structure, combined bearing force in multiplex decks, which is good for improving the stability of structural members and extending the integral service life of the anchoring device.

Description

The bond-anchorage body device of pre-stress FRP muscle

One, technical field:

The utility model relates to the bond-anchorage device of a kind of anchor, particularly a kind of prestressed tendon.

Two, background technique:

Immediate with the utility model in the existing prestressed tendon anchor is embossing bond-anchorage device, and as shown in Figure 3: this anchor is made up of common prestress wire 11, steel pole frame 8, constraint circle 7 and concrete; Embossing machine with special use, the plain carbon steel twisted wire 11 that is with constraint circle 7 is pressed into the embossing head of pyriform to be fixed on the steel pole frame 8 that is bundled into by little rod iron at head, enclose between the embossing head in constraint again, steel pole frame 8 usefulness concrete 9 are watered sealing off and covering anchorage, thereby steel strand are produced bond stress anchoring steel strand.The deficiency that this technology exists is:

One: the steel strand antiseptic property is relatively poor, especially the bending of steel strand embossing head and with the place that concrete directly bonds, easily produce corrosion, influence the life-span of steel strand;

Its two: the steel pole frame is tied up by little rod iron and is formed, and stressed aspect is single, and structure is more open, easily produces destabilizing factor in the constructing operation process, influences the security and stability of member;

Its three: the embossing head need use special-purpose embossing machine to suppress, and has strengthened the expense of equipment investment and staff training, has increased the complexity of work progress;

Three, summary of the invention:

The technical problems to be solved in the utility model is: existing embossing bond-anchorage device steel strand antiseptic property is relatively poor, and the stressed aspect of steel pole frame is single, and structure is more open, rings life of components; Work progress by improving product configurations, improves the antiseptic property of product than problems such as complexity, optimizes the stressing conditions of product, improve life of product, the security and stability of enhancement engineering, the weight of reduction product reduces cost, simplify work progress, convenient construction is expanded its function of use.

The technological scheme of dealing with problems is:

1. use prestressing force non-metallic fiber muscle---be that pre-stress FRP muscle, particularly carbon fibre bar or rope replace common prestress wire;

2. prestressing force non-metallic fiber muscle---be to be banded on the cone screw muscle with carbon fiber wire equably after pre-stress FRP muscle, particularly carbon fibre bar or carbon fiber rope scatter;

3. the binding resin that is filled with in taper on the anchor cup or the columniform groove, cone-shape that forms after solidifying fast or tubular colloid and prestressing force non-metallic fiber muscle, carbon fiber wire, cone screw muscle bond together, prestressing force non-metallic fiber muscle is produced sizable bond stress, thus anchoring prestressing force non-metallic fiber muscle.

Its concrete structure is: a kind of bond-anchorage body device of pre-stress FRP muscle, it is characterized in that: the bond-anchorage body device of this pre-stress FRP muscle is by prestressing force non-metallic fiber muscle, the anchor cup, spiral bar, carbon fiber wire, binding resin is formed, this anchor cup is the cylinder bodily form, screw thread is arranged on the periphery, and be with nut, have taper or columniform groove in it, the crude injustice of groove internal surface, bottom land has an aperture, prestressing force non-metallic fiber muscle passes aperture, be banded in equably on taper or the columniform spiral bar by carbon fiber wire after scattering, integral body is arranged in the taper or the cylindrical groove of anchor cup, and the groove internal pressure is filled binding resin.

Described non-metallic fiber muscle fiber muscle-be that the FRP muscle comprises carbon fibre bar, aramid fiber reinforced plastic bars, glass fibre muscle, pbo fiber muscle, on the FRP muscle, also can be wound with carbon fiber wire.

Described carbon fibre bar can be single non-smooth gluten, above screw thread is arranged, the surface is uneven, and also can be around the carbon fiber rope that forms or claim the carbon fiber twisted wire by 7 diameters fine carbon fibre muscle strand that is 1.5～5mm.

Described binding resin is the modified epoxy with toughness reinforcing, fast hard, enhancing, anti-aging function.

The utility model has following advantages:

1. carbon fibre bar or carbon fiber rope and so on non-metallic fiber muscle weatherability excellent, antiseptic property is good, is difficult for producing corrosion, and long service life is used for the coastal area engineering or the ocean engineering effect is more outstanding;

2. the cylindrical or taper circular groove internal pressure on the anchor cup is filled binding resin and is formed the cylinder bodily form or taper colloid so that prestressing force non-metallic fiber muscle is produced sizable bond stress, thereby anchoring prestressing force non-metallic fiber muscle, carbon fibre bar or carbon fiber rope and so on non-metallic fiber muscle does not contact with air, has further strengthened antiseptic property;

3. pbo fiber muscle, carbon fibre bar or carbon fiber rope, aramid fiber reinforced plastic bars Young's modulus height, relatively more responsive to stress deformation, thereby the load that the overwhelming majority is added on the member can both affact on carbon fibre bar or the carbon fiber rope, reduced deformation of members, increase the security and stability of member, improved the bulk life time of member;

4. pbo fiber muscle, carbon fibre bar or carbon fiber rope intensity height are in light weight, can reduce the size and the deadweight of member greatly; Anti-fatigue performance is good, can improve the security and stability of member;

5. use the cone screw muscle as the steel pole frame, structure is more firm, and multiple aspect is combination stressed, helps improving component stability;

6. need not use specialized apparatus, need not carry out special training, simplify work progress, save cost personnel.

Four, description of drawings:

Fig. 1～Fig. 3:: it " the bond-anchorage body device of pre-stress FRP muscle " structural representation of the utility model;

Fig. 4: existing embossing bond-anchorage apparatus structure schematic representation.

Body

Embodiment:

A kind of bond-anchorage body device of pre-stress FRP muscle, form by prestressing force non-metallic fiber muscle 1, carbon fiber wire 5, cone screw muscle 4, binding resin 6, anchor cup 2, described anchor cup 2 is the cylinder bodily form, screw thread is arranged on the periphery and be with nut 3, have cone tank in it, bottom land has an aperture, the crude injustice of cone tank internal surface, prestressing force non-metallic fiber muscle 1 passes aperture, be banded on the cone screw muscle 4 with carbon fiber wire 5 equably after scattering, integral body is arranged in the cone tank of anchor cup 2, fills binding resin 6 in the cone tank internal pressure.

As a kind of conversion of present embodiment, described cone screw muscle can be used cylindrical spiral bar (referring to Fig. 2) instead, and described cone tank can change cylindrical groove (referring to Fig. 3) into.

Non-metallic fiber muscle in the various embodiments described above-be that the FRP muscle comprises carbon fibre bar, aramid fiber reinforced plastic bars, glass fibre muscle, pbo fiber muscle, on the FRP muscle, also can be wound with carbon fiber wire 5.

Carbon fibre bar described in the utility model is a kind of new material, and it is by resin material---for example modified epoxy and carbon fiber wire pass through the composite material that special process is produced, and its rough surface, injustice can also have screw thread.

In the foregoing description, described binding resin 6 is the modified epoxies with toughness reinforcing, fast hard, enhancing, anti-aging function.

Claims

1, a kind of bond-anchorage body device of pre-stress FRP muscle, it is characterized in that: the bond-anchorage body device of this pre-stress FRP muscle is by prestressing force non-metallic fiber muscle (1), anchor cup (2), spiral bar (4), carbon fiber wire (5), binding resin (6) is formed, this anchor cup is the cylinder bodily form, screw thread is arranged on the periphery, and be with nut (3), have taper or cylindrical DE groove in it, the crude injustice of groove internal surface, bottom land has an aperture, prestressing force non-metallic fiber muscle (1) passes aperture, be banded in equably on taper or the columniform spiral bar (4) by carbon fiber wire (5) after scattering, integral body is arranged in the taper or the cylindrical groove of anchor cup (2), and the groove internal pressure is filled binding resin (6).

2, the bond-anchorage body device of pre-stress FRP muscle as claimed in claim 1, it is characterized in that: described non-metallic fiber muscle fiber muscle-be that the FRP muscle comprises carbon fibre bar, aramid fiber reinforced plastic bars, glass fibre muscle, pbo fiber muscle, on the FRP muscle, also can be wound with carbon fiber wire.

3, the bond-anchorage body device of pre-stress FRP muscle as claimed in claim 2, it is characterized in that: described carbon fibre bar can be single non-smooth gluten, above screw thread is arranged, the surface is uneven, and also can be to be twisted around carbon fiber rope that forms or title carbon fiber twisted wire by the fine carbon fibre muscle that 7 diameters are 1.5～5mm.

4, as the bond-anchorage body device of claim 1 or 2 or 3 described pre-stress FRP muscle, it is characterized in that: described binding resin (6) is a modified epoxy.