CN2573774Y

CN2573774Y - Resin filled extrusion fastening body device

Info

Publication number: CN2573774Y
Application number: CN 02242612
Authority: CN
Inventors: 张继文; 吕志涛; 谢正元; 关炳良; 冯健
Original assignee: LIUZHOU BUILDING MACHINERY GENERAL FACTORY; Southeast University
Current assignee: LIUZHOU BUILDING MACHINERY GENERAL FACTORY; 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 resin-filled extrusion anchoring body device which comprises a prestressing rib and an extrusion sleeve, wherein the head part of the prestressing rib is sheathed into the extrusion sleeve, and the surface of an inner hole of the extrusion sleeve is rough and uneven; the inner hole of the extrusion sleeve is filled with a layer of adhering resin, such as modified epoxy resin with the thickness of 1 to 5mm; the part of the head part of the prestressing rib, which is sheathed in the extrusion sleeve is extruded with the extrusion sleeve into a whole; the adhering resin is filled in a gap between the extrusion sleeve and the prestressing rib, and the prestressing rib can be a common prestressing steel stranded wire and can also be a prestressing non-metal fiber rib which is prestressing FRP rib and comprises a prestressing carbon fiber rib, an aramid fiber rib, a glass fiber rib and a PBO fiber rib, wherein the carbon fiber rib can be a single rib without a smooth surface, screw threads are arranged on the carbon fiber rib, and the surface of the carbon fiber rib is uneven; the carbon fiber rib can also be a carbon fiber cord which is a carbon fiber stranded wire formed by twisting and winding seven fine carbon fiber ribs with the diameter of 1.5 to 5mm. The utility model has the advantages of good safety and stability, good anticorrosion property, long service life, light weight and simple and convenient construction process.

Description

Casting resin extruding anchoring body device

One, technical field:

The utility model relates to a kind of anchor, particularly a kind of extruding shell type prestressed tendon anchoring body device.

Two, background technique:

Existing extruding shell type prestressed tendon anchor is formed (referring to Fig. 3) by common prestress wire 5, extruded sleeve 7, Extruding spring 6; Its making method is: be inserted in Extruding spring 6 at plain carbon steel twisted wire 5 heads, the steel strand that will be with Extruding spring 6 then are inserted in extruded sleeve 7, squeeze extruded sleeve 7 diameters little with special-purpose extruder again, length is squeezed long, make Extruding spring be squeezed broken and fill up the space of extruded sleeve and steel strand, extruded sleeve produces very big extruding force to steel strand, thereby steel strand are anchored in the extruded sleeve.The deficiency that this technology exists is:

One: though crowded broken Extruding spring fills up the space between extruded sleeve and steel strand, can't play seal action, make extruded sleeve and steel strand contacting point easily produce corrosion, influence the life-span;

Its two: Extruding spring need process just and can finish through special technology, and reject rate be higher relatively with special raw material, and cost of production is higher;

Its three, Extruding spring fragility is bigger, and is frangible, work progress easily produces unnecessary consumption;

Three, summary of the invention:

The technical problems to be solved in the utility model is: in the existing extruded sleeve anchor extruded sleeve seal action poor, make extruded sleeve and steel strand contacting point easily produce corrosion, influence life-span and extruded sleeve cost of production problem of higher, a kind of antiseptic property that can improve product is provided, optimize the stressing conditions of product, improve life of product, the security and stability of enhancement engineering, reduce the weight of product, reduce cost, simplify work progress, the casting resin extruding anchoring body device of convenient construction.

The technological scheme of dealing with problems is: at the thick binding resin of extruded sleeve bore area filling one deck 1～5mm, prestressed tendon adopts prestressing force non-metallic fiber muscle or is 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.

Its concrete structure is: a kind of casting resin extruding anchoring body device, comprise prestressed tendon, extruded sleeve, the prestressed tendon head is inserted in the extruded sleeve, it is characterized in that: the coarse injustice of described extruded sleeve bore area, be filled with the thick binding resin of one deck 1～5mm in it, the prestressed tendon head is inserted in the extruded sleeve and partly is squeezed into one with extruded sleeve, and binding resin fills up the space between extruded sleeve and prestressed tendon;

Described prestressed tendon can be common prestress wire, also can be prestressing force non-metallic fiber muscle---be called the pre-stress FRP muscle again, comprise carbon fibre bar-abbreviation CFRP muscle, aramid fiber reinforced plastic bars-abbreviation AFRP muscle, glass fibre muscle-abbreviation GFRP muscle, the pbo fiber muscle also can be wound with carbon fiber wire on the FRP muscle.

As a kind of conversion of the present utility model, described prestressed tendon is carbon fibre bar-abbreviation CFRP muscle, this carbon fibre bar can be single non-smooth gluten, above have screw thread, surface to be uneven, also can be to twist around carbon fiber rope that forms or title carbon fiber twisted wire, on carbon fibre bar, also can be wound with carbon fiber wire by the fine carbon fibre muscle that 7 diameters are 1.5～5mm.

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

Because adopt said structure, the utility model has following advantages:

1. binding resin filling extruded sleeve bore area behind the extrusion moulding, can improve the antiseptic property at this place greatly at the inner sealing configuration that produces of extruded sleeve, raising product working life;

2. binding resin raw material sources is abundant, and production technology is simpler, and reject rate reduces greatly that therefore cost of production is much lower than Extruding spring, and is difficult for producing waste;

3. behind the extruded sleeve extrusion moulding, prestressed tendon is except the power of being squeezed, and binding resin also will produce sizable adhesion to prestressed tendon, help to improve the security and stability of total;

4. non-metallic fiber muscle weatherability excellent, antiseptic property is good;

5. pbo fiber muscle, carbon fibre bar or carbon fiber rope 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 pbo fiber muscle, carbon fibre bar or carbon fiber rope, the aramid fiber reinforced plastic bars, reduced deformation of members, increase the security and stability of member, improved the bulk life time of member;

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

7. carbon fibre bar or carbon fiber rope, aramid fiber reinforced plastic bars flexural rigidity are low, and better softness is easy to reel, are convenient to the carrying of long rope and set up.

8. glass fibre muscle cost is low, is used for indivedual places not high to the prestressed tendon performance requirement, can reduce engineering cost greatly.

Four, description of drawings:

Fig. 1: the utility model embodiment one structural representation;

Fig. 2: the utility model embodiment two structural representation;

Fig. 3: existing extruded sleeve anchor structural representation.

Five: embodiment:

Embodiment one:

A kind of casting resin extruding anchoring body device, comprise prestressed tendon 1, extruded sleeve 3, prestressed tendon head 1 is inserted in the extruded sleeve, described extruded sleeve has certain rigidity, the coarse injustice of bore area, be filled with the thick binding resin of one deck 1～5mm in it, head is inserted in the extruded sleeve and partly is squeezed into one with extruded sleeve 3, binding resin 2 fills up the space (referring to Fig. 1) between extruded sleeve 3 and the prestressed tendon 1, described prestressed tendon 1 is plain carbon steel twisted wire or reinforcing bar, the above-mentioned binding resin that is filled in the extruded sleeve bore area can apply in advance, also can be after prestressed tendon be inserted in extruded sleeve enhancing perfusion, described extruded sleeve is the extruded sleeve of the certain rigidity of having of steel.

As a kind of conversion of present embodiment, described extruded sleeve bore area has shallow shrinkage pool or groove, with area of contact and the adhesive force of increase with binding resin.

Embodiment two:

Its basic structure is with embodiment one, institute's difference is: described prestressed tendon is a prestressing force non-metallic fiber muscle---be the pre-stress FRP muscle, this non-metallic fiber muscle comprises carbon fibre bar-abbreviation CFRP muscle, aramid fiber reinforced plastic bars-abbreviation AFRP muscle, glass fibre muscle-abbreviation GFRP muscle, the pbo fiber muscle; On various FRP muscle, all can be wound with carbon fiber wire 4, described carbon fibre bar can be single non-smooth gluten, above have screw thread, surface to be uneven, also can be around the carbon fiber rope that forms or claim carbon fiber twisted wire (referring to Fig. 2) by 7 diameters fine carbon fibre muscle strand that is 1.5～5mm.

Described carbon fibre bar or rope are a kind of new materials, and it is by resin material---for example modified epoxy and carbon fiber wire pass through the composite material that special process is produced.

In the various embodiments described above, described binding resin 2 is the modified epoxies with toughness reinforcing, fast hard, enhancing, anti-aging function.

Claims

1, a kind of casting resin extruding anchoring body device, comprise prestressed tendon (1), extruded sleeve (3), the prestressed tendon head is inserted in the extruded sleeve, it is characterized in that: described extruded sleeve (3) has certain rigidity, the coarse injustice of bore area or shallow shrinkage pool is arranged or groove, be filled with the thick binding resin of one deck 1～5mm (2) in it, prestressed tendon (1) head is inserted in the extruded sleeve (3) and partly is squeezed into one with extruded sleeve, and binding resin (2) fills up the space between extruded sleeve (3) and the prestressed tendon (1).

2, casting resin extruding anchoring body device as claimed in claim 1, it is characterized in that: described prestressed tendon (1) is a prestressing force non-metallic fiber muscle---be the pre-stress FRP muscle, this non-metallic fiber muscle comprises carbon fibre bar, aramid fiber reinforced plastic bars, glass fibre muscle, pbo fiber muscle.

3, casting resin extruding anchoring body device as claimed in claim 1, it is characterized in that: described prestressed tendon (1) is a carbon fibre bar, this carbon fibre bar can be single non-smooth gluten, above have screw thread, surface to be uneven, 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.

4, casting resin extruding anchoring body device as claimed in claim 1, it is characterized in that: described prestressed tendon (1) is the FRP muscle that is wound with carbon fiber wire on it.

5, as claim 1 or 2 or 3 or 4 described casting resin extruding anchoring body devices, it is characterized in that: described binding resin (2) is a modified epoxy.