CN202158054U - FRP rib material end nut - Google Patents
FRP rib material end nut Download PDFInfo
- Publication number
- CN202158054U CN202158054U CN2011202621111U CN201120262111U CN202158054U CN 202158054 U CN202158054 U CN 202158054U CN 2011202621111 U CN2011202621111 U CN 2011202621111U CN 201120262111 U CN201120262111 U CN 201120262111U CN 202158054 U CN202158054 U CN 202158054U
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- China
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- frp
- end nut
- rib material
- nut
- rib
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Abstract
The utility model discloses an end nut made of FRP rib material, which relates to an accessory made of FRP rib material. According to the structure of the end nut (1) made of FRP rib material, the inner wall of the end nut (1) adopts a structure matched with the external diameter of an FRP screw thread rib (2). The outer edge of the cross section of the end nut (1) made of FRP rib material is circular or polygonal and the end nut is in the shape of a cylinder, a cone, a prism or a prismoid. The end nut made of FRP rib material can be arranged on the end portion of an FRP screw thread rib so as to realize the effect of a steel bar elbow. The end nut made of FRP rib material and applied to a prestressed FRP screw thread rib improves the gripping force of the FRP screw thread rib. The end nut made of FRP rib material is simple in operation and the manufacture of the end nut is mechanized through semi-automatic compression molding. The production efficiency of the end nut is improved and the labor intensity of workers is reduced. Meanwhile, the loss of raw materials and the operation space are reduced. Therefore, the end nut made of FRP rib material has energy-saving and emission-reducing effects.
Description
Technical field
The utility model relates to a kind of accessory of FRP muscle material, relates in particular to a kind of FRP muscle material termination nut.Specifically, FRP muscle material termination nut is installed in the end of FRP twisted steel, the function of performance as common end reinforced elbow.
Background technique
At present, reinforced concrete technology has been widely used in civil engineering, military project building and some special engineering, and its technology is very ripe.Yet traditional reinforced concrete arrangement of reinforcement or prestress wire all depend on iron and steel.Since the steamer invention, iron and steel resource was exploited more than 300 year, resource-constrained, and cost of winning increases along with the continuous exhaustion of resource significantly, therefore needs to seek effective alternate resources.With glass fibre, basalt fibre, graphite fiber or other high strength fibres is main material; With the resin is a kind of new material that auxiliary material are processed---fiber-reinforced polymer (Fiber Reinforced Polymer is called for short FRP) and fiber muscle material (being called for short FRP muscle material) have become tool substitute products with broad prospects for development.
The intensity of FRP muscle material is 1.5～2.5 times of steel, and density is 1/5～1/4 of steel, has advantages such as not corrosion and good endurance, is a kind of novel building composite material of high-strength, light-duty and high-quality.
U.S. OCF company relies on its advantage in the glass fibre field, has researched and developed light-duty novel building composite materials such as the compound muscle of glass fibre; At the beginning of 21 century, the expert of Japan works out again and uses new materials such as replacing reinforcing bar based on the compound muscle of the high-strength carbon fibre of carbon fiber-reinforced resin, and is applied to actual engineering, has brought into play that compound muscle is in light weight, intensity is high and the strong all advantages of corrosion resistance.
In recent years, the compound muscle of graphite fiber also had small-scale production and application test in China, and through State Bureau of Building Materials Industry product quality inspection center and middle smelting research institute etc. the safe application performance of compound muscle was tested and studied.We are through for many years theoretical research and experimental exploring, between No. zero abutment of Hubei Province's Zigui County pine tree col bridge and bridge pier, have built domestic first and have striden the concrete simply supported beam of being made up of FRP muscle material, FRP prestressed tendon material and FRP ground tackle fully.This bridge belongs to the support engineering of the research project " nonmetallic material armored concrete bridge Study on Key Technique fully " of Hubei Province Science and Technology Department project verification, has certain exemplary role and developing meaning.
Because FRP material and ferrous materials physical property have some differences, therefore need exploitation special technique and technology, maximize favourable factors and minimize unfavourable ones, give full play to new material energy-conservation, reduce and pollute and develop the effect aspect the new resources.This invention is to the characteristics of FRP muscle material inconvenience as the random brake forming of reinforcing bar; Develop a kind of prestressing nut; The end of muscle material be can be installed on easily, muscle material and concrete bond stress, the end reinforced elbow of replacement tradition effectively improved safely.
Through retrieval, do not see the report that is installed on FRP muscle material end with nut, also do not see about making the patented technology of FRP muscle material end bends.
Summary of the invention
The purpose of the utility model just is to overcome the shortcoming and defect that existing technology exists, and a kind of FRP muscle material termination nut is provided.
The purpose of the utility model is achieved in that
One, FRP muscle material termination nut
The inwall of FRP muscle material termination nut is a kind of and the adaptive structure of FRP twisted steel external diameter;
The cross section outer of FRP muscle material termination nut is circle or polygonal, and profile is cylindrical body, Rotary-table, prism or prismoid.
Two, the production method of FRP muscle material termination nut
The production method of FRP muscle material termination nut comprises the following steps:
1. chopped strand is mixed in the resin adhesive liquid mussily, gets sizing material;
Its weight percentage: fiber 40～60%, resin adhesive liquid 60～40%;
2. adopt the technology of a layer sizing, one deck fibre cloth, twining mechanically winding, fibre cloth
The number of plies is 4～7 layers, obtains the base material blank;
By weight percentage: fibre cloth 50～60%, sizing material: 50～40%;
3. the base material blank is put into the moulding of mould warming and pressurizing, and use machinery to move back modeling method and take out finished product.
The function of each material:
The function of chopped strand is the shear strength and the shear modulus of reinforcement, and the function of mixed and disorderly chopped strand is the pseudo-isotropy of reinforcing material, improves the mechanical property of member;
Resin adhesive liquid plays solidifies and the moulding effect;
The fibre cloth of harassing and disturbing is used to increase hoop and axial tensile strength and Young's modulus.
Two, the utlity model has advantage and good effect:
1, this FRP muscle material termination nut can be used for the end of FRP twisted steel, plays the effect of reinforcing bar elbow;
2, this FRP muscle material termination nut can be applicable to the pre-stress FRP twisted steel, increases concrete to the FRP screw thread
The bond stress of muscle,
Easy and simple to handle when 3, using this FRP muscle material termination nut;
4, mechanization, semi-automatic press molding method are adopted in the manufacturing of this FRP muscle material termination nut, have improved manufacturing efficiency, reduce labor intensity, and have reduced raw-material loss and operation place, have energy-conservation, emission reduction effect.
Description of drawings
Fig. 1 is the schematic representation (longitudinal profile) of this nut when passing single FRP twisted steel;
Fig. 2 is the schematic representation (longitudinal profile) that this nut is applied to the pre-stress FRP twisted steel;
Fig. 3 is the schematic representation (longitudinal profile) that this nut is applied to common FRP twisted steel.
Among the figure:
1-FRP muscle material termination nut (abbreviation nut);
2-FRP twisted steel.
Embodiment
Specify below in conjunction with accompanying drawing and embodiment:
One, the structure of FRP muscle material termination nut 1
Like Fig. 1, the inwall of FRP muscle material termination nut 1 is a kind of and the adaptive structure of FRP twisted steel 2 external diameters;
The cross section outer of FRP muscle material termination nut 1 is circle or polygonal, and profile is cylindrical body, Rotary-table, prism or prismoid.
The cross section outer of FRP muscle material termination nut 1 is good with regular hexagon.
Two, the production method of FRP muscle material termination nut
1, step 1. in
By weight percentage, the best is: chopped strand 50%, resin adhesive liquid 50%.
Described chopped strand is glass fibre, basalt fibre or graphite fiber, and length is 0.5～10mm, and optimum value is 7mm;
Described resin adhesive liquid is a kind of chemical product commonly used.
Specifically, resin adhesive liquid is the mixture of resin and curing agent, promoter (also can), initator (also can).This mixture solidifies after mixing within a certain period of time.Here said resin can be a unsaturated resin, like polyester; Also can be epoxy resin or vinylite.
Different resin solidification temperature and curing agent type are all different, can be with reference to the operation instruction of this resin.
2, step 2. in
By weight percentage, the best is: sizing material is 55%, and fibre cloth is 45%;
Described fibre cloth is a kind of engineering textile product commonly used.
Specifically, fibre cloth is the two-way cloth that is woven into by glass fibre, basalt fibre or graphite fiber; Described two-way cloth is meant the cloth that warp and parallel all adopt the fibrous woven of identical material to become.
3, step 3. in
To middle temperature resin adhesive liquid, be warmed to 150～170 ℃; To the high-temperature resin glue, be warmed to 220～250 ℃.
Be pressurized to 5～20Mpa.
Three, the application process of FRP muscle material termination nut 1
1, is applied in the pre-stress FRP twisted steel
Like Fig. 2, at first this nut 1 is installed on the end of FRP twisted steel 2, because have certain clearance between this nut and the FRP twisted steel 2, its bond stress is limited, for strengthening bond stress, takes following measure:
1. nut 1 is made two shorter nuts, one of them to another precession, is then formed prestressing nut after compressing, eliminated the gap between nut 1 and the FRP twisted steel 2;
2. adopt single-end head nut 1, fix with the epoxy resin adhesion;
3. nut 1 is made Rotary-table, a bigger end face to pulling force anti-to, increase the whole end grip effect of FRP twisted steel.
2, be applied in the common FRP twisted steel
Like Fig. 3, the two ends that nut 1 are installed on common FRP twisted steel 2 respectively get final product.
Reinforcing bar in the ordinary reinforced concrete carries out secondary operations with the reinforcing bar two ends and makes hook solid in order to utilize reinforced steel bar strength to a greater extent, improves the pull strength of reinforcing bar in concrete.But FRP twisted steel 2 belongs to brittle material, can not as reinforcing bar, carry out the secondary crotch easily.This nut 1 is with its excellent material characteristic and be easy to characteristic, plays the crotch effect of ordinary steel bar.
Claims (2)
1. FRP muscle material termination nut is characterized in that:
The inwall of FRP muscle material termination nut (1) is a kind of and the adaptive structure of FRP twisted steel (2) external diameter;
The cross section outer of FRP muscle material termination nut (1) is circle or polygonal, and profile is cylindrical body, Rotary-table, prism or prismoid.
2. by the described a kind of FRP muscle material of claim 1 termination nut, it is characterized in that:
The cross section outer of FRP muscle material termination nut (1) is a regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202621111U CN202158054U (en) | 2011-07-22 | 2011-07-22 | FRP rib material end nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202621111U CN202158054U (en) | 2011-07-22 | 2011-07-22 | FRP rib material end nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158054U true CN202158054U (en) | 2012-03-07 |
Family
ID=45765694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202621111U Expired - Fee Related CN202158054U (en) | 2011-07-22 | 2011-07-22 | FRP rib material end nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132654A (en) * | 2011-07-22 | 2013-06-05 | 湖北金力工程复合材料有限公司 | FRP reinforcement material end nut and manufacturing method and application thereof |
-
2011
- 2011-07-22 CN CN2011202621111U patent/CN202158054U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132654A (en) * | 2011-07-22 | 2013-06-05 | 湖北金力工程复合材料有限公司 | FRP reinforcement material end nut and manufacturing method and application thereof |
| CN103132654B (en) * | 2011-07-22 | 2015-03-04 | 湖北金力工程复合材料有限公司 | FRP reinforcement material end nut and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20160722 |