CN202081574U - Fiber reinforced polymer-steel stranded wire composite bar concrete beam - Google Patents
Fiber reinforced polymer-steel stranded wire composite bar concrete beam Download PDFInfo
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- CN202081574U CN202081574U CN2011200533046U CN201120053304U CN202081574U CN 202081574 U CN202081574 U CN 202081574U CN 2011200533046 U CN2011200533046 U CN 2011200533046U CN 201120053304 U CN201120053304 U CN 201120053304U CN 202081574 U CN202081574 U CN 202081574U
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- reinforced polymer
- fiber
- concrete
- wire composite
- steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 239000004567 concrete Substances 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 239000000835 fiber Substances 0.000 title claims abstract description 27
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 39
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 210000000614 Ribs Anatomy 0.000 claims description 31
- 210000003205 Muscles Anatomy 0.000 claims description 24
- 239000004760 aramid Substances 0.000 claims description 6
- 229920003235 aromatic polyamide Polymers 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000011372 high-strength concrete Substances 0.000 claims description 4
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 3
- 230000003287 optical Effects 0.000 claims description 3
- 230000002093 peripheral Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 9
- 239000011150 reinforced concrete Substances 0.000 description 5
- 229920002748 Basalt fiber Polymers 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 210000002435 Tendons Anatomy 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 238000009114 investigational therapy Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Abstract
The utility model discloses a fiber reinforced polymer-steel stranded wire composite bar concrete beam which comprises top pressed bars, bottom longitudinal pulled bars, steel hoop bars and concrete, wherein the top pressed bars and the bottom longitudinal pulled bars are fiber reinforced polymer-steel stranded wire composite bars, and each fiber reinforced polymer-steel stranded wire composite bar is formed by compounding a steel stranded wire positioned at the core with fiber reinforced polymer fiber positioned at the periphery through resin. The fiber reinforced polymer-steel stranded wire composite bar concrete beam is a combination beam constituted by two different materials, namely the fiber reinforced polymer-steel stranded wire composite bars and the concrete, thereby being capable of fully playing respective properties of the two materials: the fiber reinforced polymer-steel stranded wire composite bars have high tensile strength, stronger decay resistance and a certain yield behavior and can improve durability, safety and economy of the combination beam; and the concrete has higher bearing capacity under three-axis pressure stress state, can improve the bearing capacity of the combination beam and provides a new choice for civil engineering construction.
Description
Technical field
The utility model belongs to a kind of civil engineering structure member, be particularly related to a kind of concrete beam of forming by fiber-reinforced polymer, steel strand and three kinds of different materials of concrete, be particularly useful for bridge construction under the adverse circumstances such as ocean, humidity and salt-soda soil, road structure, subway tunnel engineering, sea port dock engineering etc.
Background technology
At present, reinforcing bar and concrete are the main building materialss in the infrastructure, but in the last few years, and the corrosion of reinforced concrete structure and steel work, performance degradation problem are serious day by day, wherein common with corrosion of steel bar.The corrosion of steel not only has influence on the normal use and the life-span of structure, but also can cause a large amount of security incidents and hidden danger.The investigation result of Beijing in 2007 shows, causes the destruction of urban interchange to have generality by corrosion of steel bar.The investigation statistics of China Ministry of Railways in 2009 shows that system-wide has 3000 porous reinforced concrete beams to have the corrosion of steel bar disease, estimates that required maintenance cost surpasses 1,000,000,000 RMB.According to " national highway statistics annual report in 2010 ", by the end of the year 2010,345773 of the existing various highway bridges of China, wherein unsafe bridge is 12583, and these unsafe bridges of strengthening reconstruction need 21,000,000,000 RMB approximately.The corrosion problem of reinforced concrete structure infrastructure also all exists to some extent in countries in the world, and there is disease in nearly 26.3% in the U.S.'s 590000 bridge blocks in 2008; Department of Transportation estimate from 2010～2020 10 in the period of, only be used to keep the bridge present situation, just need 7,300,000,000 dollars every year on average.As from the foregoing, the corrosion of steel bar problem in the infrastructure is worldwide all very serious, and has caused enormous economic loss and heavy security incident.Therefore, developing and build the structure with long durability and low maintenance expense is the problem that Chinese society and economic development press for solution.
One of solution to the problems described above is to adopt new construction material or development new architecture, in the new construction material, fiber-reinforced polymer (Fiber Reinforced Polymer, be called for short FRP) be used in the concrete structure, be intended to fundamentally solve the engineering Problem of Failure that causes by corrosion of steel bar.In recent years, the fiber-reinforced polymer muscle has been used for the concrete beam member more and more as the substitution material of plain bars, fiber-reinforced polymer reinforced concrete beam become development high durability concrete beam research direction it
But, along with progressively carrying out of fiber-reinforced polymer tendon concrete structure performance study, the shortcoming of fiber-reinforced polymer muscle also exposes gradually, the basic reason that restriction fiber-reinforced polymer muscle fails to obtain large-scale application is that the fiber-reinforced polymer muscle is the linear elasticity fragile material, modulus of elasticity is lower, ductility is relatively poor, certainly will make the fiber-reinforced polymer tendon concrete structure produce the bigger amount of deflection and the crack of broad in the process under arms, influences safety, applicability and the durability of structure.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing fiber-reinforced polymer reinforced concrete beam, the utility model will provide a kind of both can improve structure bearing capacity and anti-seismic performance, can make structure have favorable durability, higher safety and the fiber-reinforced polymer-steel twisting-wire composite rib concrete beam of economy again in adverse circumstances such as ocean, humidity and salt-soda soil.
The purpose of this utility model is achieved through the following technical solutions:
A kind of fiber-reinforced polymer-steel twisting-wire composite rib concrete beam, formed by beading, bottom longitudinal tensile muscle, stirrup muscle and concrete by the top, it all is fiber-reinforced polymer-steel twisting-wire composite ribs that described top is subjected to beading and bottom longitudinal tensile muscle, and described fiber-reinforced polymer-steel twisting-wire composite rib is formed through resin compounded by steel strand that are positioned at core and the fiber-reinforced polymer fiber that is positioned at the periphery.
Fiber-reinforced polymer-steel twisting-wire composite rib described in the utility model is circular muscle material, and the surface has the cross rib that is formed by the double helix fiber bundle.
Stirrup muscle described in the utility model is normal optical round bar or Ribbed Bar.
Concrete described in the utility model is ordinary concrete or high-strength concrete.
Steel strand described in the utility model are twisted into by 19 single wires, and nominal outside diameter is 1.5mm; The single wire diameter is 0.3mm.
Fiber-reinforced polymer described in the utility model is that glass fiber reinforced polymer, carbon fiber reinforced polymer, basalt fiber-reinforced polymer or aramid fiber strengthen polymer.
Fiber-reinforced polymer described in the utility model is that the composite fibre that these four kinds of fibers of glass fiber, carbon fiber, basalt fibre and aramid fiber mix by a certain percentage strengthens polymer.
The utility model has the following advantages and effect with respect to prior art:
1. fiber-reinforced polymer-steel twisting-wire composite rib that the utility model adopted is the product that the non-linear of steel strand combined with the high-tensile and the decay resistance of fiber-reinforced polymer muscle, can improve its extension property in use, and then improve the yield characteristic of fiber-reinforced polymer muscle, can also reduce material cost.Therefore, fiber-reinforced polymer-steel twisting-wire composite rib is one of important materials of effectively utilizing the fiber-reinforced polymer performance.
2. the utility model is the compound beam that is made of fiber-reinforced polymer-steel twisting-wire composite rib and two kinds of different materials of concrete, can give full play to constituent material characteristic separately: fiber-reinforced polymer-steel twisting-wire composite rib has high-tensile, stronger decay resistance and certain yield behavior, can improve durability, safety and the economy of compound beam; Concrete has an advantages of high bearing capacity under three axial compression stress states, can improve the supporting capacity of compound beam.
3. the utility model possesses higher rigidity, ultimate bearing capacity and shock resistance as a kind of new concrete member, can significantly improve the safety and the economy of structure, and can produce good social benefit and economic benefit.
4. fiber-reinforced polymer-steel twisting-wire composite rib has the strong corrosion resistant performance, thereby the utlity model has adverse circumstances such as stronger endurance quality, particularly suitable Yu Haiyang, humidity and salt-soda soil.
Description of drawings
3 in the total accompanying drawing of the utility model, wherein:
Fig. 1 is the structural representation of fiber-reinforced polymer-steel twisting-wire composite rib concrete beam.
Fig. 2 is the cross-sectional structure schematic diagram of fiber-reinforced polymer-steel twisting-wire composite rib concrete beam.
Fig. 3 is the schematic cross-section of fiber-reinforced polymer-steel twisting-wire composite rib.
Among the figure: 1, the top is subjected to beading, and 2, bottom longitudinal tensile muscle, 3, the stirrup muscle, 4, concrete, 5, steel strand, 6, fiber-reinforced polymer.
The specific embodiment
With reference to the accompanying drawings the utility model is elaborated.As Figure 1-3, a kind of fiber-reinforced polymer-steel twisting-wire composite rib concrete beam, formed by beading 1, bottom longitudinal tensile muscle 2, stirrup muscle 3 and concrete 4 by the top, it all is fiber-reinforced polymer-steel twisting-wire composite ribs that described top is subjected to beading 1 and bottom longitudinal tensile muscle 2, and described fiber-reinforced polymer-steel twisting-wire composite rib is formed through resin compounded by steel strand 5 that are positioned at core and fiber-reinforced polymer 6 fibers that are positioned at the periphery.Described fiber-reinforced polymer-steel twisting-wire composite rib is circular muscle material, and the surface has the cross rib that is formed by the double helix fiber bundle.Described stirrup muscle 3 is normal optical round bar or Ribbed Bar.Described concrete 4 is ordinary concrete or high-strength concrete.Described steel strand 5 are twisted into by 19 single wires, and nominal outside diameter is 1.5mm; The single wire diameter is 0.3mm.Described fiber-reinforced polymer 6 is that glass fiber reinforced polymer, carbon fiber reinforced polymer, basalt fiber-reinforced polymer or aramid fiber strengthen polymer.Described fiber-reinforced polymer 6 is that the composite fibre that these four kinds of fibers of glass fiber, carbon fiber, basalt fibre and aramid fiber mix by a certain percentage strengthens polymer.
Implementation method of the present utility model is as follows:
1, fiber-reinforced polymer-steel twisting-wire composite rib is formed through resin compounded by fiber-reinforced polymer 6 and steel strand 5, the employing pultrude process is produced, in the pultrusion process, steel strand 5 and fiber-reinforced polymer 6 are behind resin impregnation, the center that makes steel strand 5 be in fiber-reinforced polymer 6 enters extruding equipment again, and used fiber-reinforced polymer 6 fibers are glass fiber, carbon fiber, basalt fibre, aramid fiber or this four kinds of composite fibre that fiber mixes by a certain percentage.
2, carry out Mold Making according to the size of required member, require to lay the top according to structure simultaneously and be subjected to beading 1, calculate required bottom longitudinal tensile muscle 2 according to being subjected to curved requirement for bearing capacity, and according to being cut the required shear reinforcement of requirement for bearing capacity calculating as stirrup, last colligation fiber-reinforced polymer-steel twisting-wire composite rib cage.
3, during concreting 4, fiber-reinforced polymer-steel twisting-wire composite rib cage is placed mould, build ordinary concrete or high-strength concrete, fully vibrate to avoid the laminated segregation of concrete 4 simultaneously, treat that concrete 4 reaches form removal behind the demoulding strength.
Claims (6)
1. fiber-reinforced polymer-steel twisting-wire composite rib concrete beam, formed by beading (1), bottom longitudinal tensile muscle (2), stirrup muscle (3) and concrete (4) by the top, it is characterized in that: it all is fiber-reinforced polymer-steel twisting-wire composite ribs that described top is subjected to beading (1) and bottom longitudinal tensile muscle (2), and described fiber-reinforced polymer-steel twisting-wire composite rib is by the steel strand that are positioned at core (5) and be positioned at peripheral fiber-reinforced polymer (6) fiber and form through resin compounded.
2. a kind of fiber-reinforced polymer according to claim 1-steel twisting-wire composite rib concrete beam is characterized in that: described fiber-reinforced polymer-steel twisting-wire composite rib is circular muscle material, and the surface has the cross rib that is formed by the double helix fiber bundle.
3. a kind of fiber-reinforced polymer according to claim 1-steel twisting-wire composite rib concrete beam is characterized in that: described stirrup muscle (3) is normal optical round bar or Ribbed Bar.
4. a kind of fiber-reinforced polymer according to claim 1-steel twisting-wire composite rib concrete beam is characterized in that: described concrete (4) is ordinary concrete (4) or high-strength concrete (4).
5. a kind of fiber-reinforced polymer according to claim 1-steel twisting-wire composite rib concrete beam is characterized in that: described steel strand (5) are twisted into by 19 single wires, and nominal outside diameter is 1.5mm; The single wire diameter is 0.3mm.
6. a kind of fiber-reinforced polymer according to claim 1-steel twisting-wire composite rib concrete beam is characterized in that: described fiber-reinforced polymer (6) is that glass fiber reinforced polymer, carbon fiber reinforced polymer, basalt fiber-reinforced polymer or aramid fiber strengthen polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200533046U CN202081574U (en) | 2011-03-02 | 2011-03-02 | Fiber reinforced polymer-steel stranded wire composite bar concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200533046U CN202081574U (en) | 2011-03-02 | 2011-03-02 | Fiber reinforced polymer-steel stranded wire composite bar concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081574U true CN202081574U (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200533046U Expired - Fee Related CN202081574U (en) | 2011-03-02 | 2011-03-02 | Fiber reinforced polymer-steel stranded wire composite bar concrete beam |
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| Country | Link |
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| CN (1) | CN202081574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483170A (en) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | Test piece containing CFRP-PCPs composite bars |
| CN107060820A (en) * | 2017-01-22 | 2017-08-18 | 北京工业大学 | A kind of FRP composite lining structures of embedded steel core |
-
2011
- 2011-03-02 CN CN2011200533046U patent/CN202081574U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483170A (en) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | Test piece containing CFRP-PCPs composite bars |
| CN107060820A (en) * | 2017-01-22 | 2017-08-18 | 北京工业大学 | A kind of FRP composite lining structures of embedded steel core |
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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: 20111221 Termination date: 20120302 |