CN205259457U - Novel compound FRP muscle - Google Patents
Novel compound FRP muscle Download PDFInfo
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- CN205259457U CN205259457U CN201521067527.2U CN201521067527U CN205259457U CN 205259457 U CN205259457 U CN 205259457U CN 201521067527 U CN201521067527 U CN 201521067527U CN 205259457 U CN205259457 U CN 205259457U
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Abstract
The utility model provides a novel compound FRP muscle, bond including FRP muscle, the steel strand wires of locating FRP muscle center and winding and fix at the outer carbon fiber tape of FRP muscle, steel strand wires pass through thermosetting resin heat -curing and are in in the FRP muscle, the carbon fiber tape passes through thermosetting resin heat -curing and is in on the FRP muscle. The utility model discloses a novel compound FRP muscle, through setting up steel strand wires and common heat -curing at FRP muscle center together, make steel strand wires and tow atress jointly, FRP muscle protection bit is avoided corroding in the steel strand wires at center, steel strand wires are showing elastic modulus and the shear strength who has improved the FRP muscle, and simultaneously, carbon fiber tape solidification is on the FRP muscle, because carbon fiber bundle has very high alkali -resistant corrosion behavior, still can keep better bonding anchoring performance after the caustic corrosion, novel compound FRP muscle has higher elastic modulus, bonding anchoring performance after shear strength and the alkaline -resisting corruption, be suitable for the vertical atress reinforcing bar as concrete member more.
Description
Technical field
The utility model relate to a kind of new type compound fiber-reinforced polymer (FiberReinforcedPolymer,Be called for short FRP) muscle, especially a kind of compound FRP muscle for civil engineering concrete component.
Background technology
Reinforced concrete structure, as one of most important version, has obtained widely should in field of civil engineeringWith. But engineering practice shows, changing in the erosion environments such as cryosel, chemical plant and harbour, reinforcing bar is vulnerable to corrode and cause coagulationThe spalling of soil, causes xoncrete structure generation endurance issues. FRP muscle has high-strength light, underrelaxation, good fatigue resistanceThe advantages such as energy and decay resistance, particularly anti-chlorine ion corrosion, are particularly useful for the xoncrete structure in chloride environment. WhenWhen FRP muscle is used as vertical muscle, stirrup or presstressed reinforcing steel, can significantly improve bearing capacity and the endurance quality of concrete component.
FRP muscle is made up of with the polymeric matrix two parts with cementation the continuous tow with drawing-resistant function,Polymeric matrix is the thermosetting resin after being heating and curing, and FRP muscle belongs to anisotropic material, and shearing strength is much smaller than its tensionIntensity. In the time that FRP muscle is used for concrete flexural member, while particularly use as bonded prestressed tendon, it is at curved scissors Duan ChengWhen being subject to larger tension, be also subject to larger shearing. Therefore, longitudinal FRP muscle of concrete flexural member can in curved scissors sectionCan there is the sheared destruction of fragility. Common FRP muscle elastic modelling quantity is lower, and the rigidity of its concrete flexural member is often less,Bigger than normal in normal operational phase amount of deflection. Meanwhile, common FRP muscle adopts nylon rope or plastic ties to be wound in rib, concreteIn alkaline environment, be vulnerable to corrosion, affect FRP muscle and concrete adhesive property.
For improving the defect of FRP muscle, carry out correlative study both at home and abroad, existing viewpoint is to add steel in FRP muscleThe steel such as twisted wire, reinforcing bar. But the cooperative work performance of steel and FRP is poor in prior art, and the outer timber material that is wound inCaustic corrosion problem is not resolved, and FRP muscle still exists the poor problem of bond and anchor property in alkali environment.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, provide in a kind of alkali environment bond and anchor property good,The new type compound FRP muscle that elastic modelling quantity and shearing strength are high.
To achieve these goals, the technical scheme that the utility model adopts is: a kind of new type compound FRP muscle, bagSteel strand wires and the winding of draw together FRP muscle, being located at FRPJin center are adhesively fixed on the outer field carbon fiber tape of FRP muscle, described steel strand wiresBe heating and curing in described FRP muscle by thermosetting resin, described carbon fiber tape is heating and curing described by thermosetting resinOn FRP muscle.
Preferably, described steel strand wires adopt the galvanized strand wires that standard tensile strength is 1720MPa, in described FRP muscleFibre bundle adopts continuous glass fiber bundle, basalt fibre bundle or carbon fiber bundle, and described carbon fiber tape employing TEX is 300Carbon fiber bundle.
Preferably, in described FRP muscle, described fibre bundle be heating and curing after the volume ratio of thermosetting resin matrix be2.4:1。
Preferably, the volume fraction of described steel strand wires in new type compound FRP muscle is 14.05%, 20.15% or 27.30%.
Preferably, described carbon fiber tape is fastened and forms depressed rib on described FRP muscle.
Preferably, the rib spacing of described depressed rib and rib are respectively 18mm and 2.1mm deeply.
New type compound FRP muscle of the present utility model, is arranged steel strand wires and is jointly heating and curing by FRPJin centerTogether, make steel strand wires and the fibre bundle can be jointly stressed, the protection of FRP muscle be positioned at the steel strand wires at center and avoids corrosion, and steel strand wires are aobviousWork has improved elastic modelling quantity and the shearing strength of FRP muscle, and meanwhile, carbon fiber tape is solidificated on FRP muscle, because carbon fiber bundle hasVery high alkali resistant corrosive nature still can keep good bond and anchor property, FRP muscle, steel strand wires and carbon fibre after caustic corrosionDimension band is firmly combined into an entirety, mutually supports, jointly stressed, and synergy, makes new type compound FRP muscle have higherElastic modelling quantity, shearing strength and alkali corrosion resistance after bond and anchor property, be more suitable for use as being longitudinally subject to of concrete componentPower reinforcing bar.
Brief description of the drawings
Fig. 1 is the structural representation of new type compound FRP muscle in the utility model embodiment.
Detailed description of the invention
Below by detailed description of the invention, the technical solution of the utility model is described in further detail.
Embodiment, as shown in Figure 1, a kind of new type compound FRP muscle, comprises FRP muscle 1, is located at the steel strand wires at FRPJin center2 and be wound around be adhesively fixed on the outer field carbon fiber tape 3 of FRP muscle, steel strand wires 2 are heating and curing at FRP muscle 1 by thermosetting resinIn, carbon fiber tape 3 is heating and curing on FRP muscle 1 by thermosetting resin, and it is 1720MPa that steel strand wires adopt standard tensile strengthGalvanized strand wires, the fibre bundle in described FRP muscle adopts continuous glass fiber bundle, basalt fibre bundle or carbon fiber bundle,Described carbon fiber tape adopts the carbon fiber bundle that TEX is 300, in FRP muscle, described fibre bundle be heating and curing after thermosetting resinThe volume ratio of matrix is 2.4:1, and the volume fraction of steel strand wires in new type compound FRP muscle is 14.05%, 20.15% or 27.30%,Carbon fiber tape is fastened and forms depressed rib on described FRP muscle, the rib spacing of depressed rib and rib be deeply respectively 18mm and2.1mm。
The new type compound FRP muscle of the present embodiment, is arranged steel strand wires and is jointly heating and curing one by FRPJin centerRise, make steel strand wires and the fibre bundle can be jointly stressed, the protection of FRP muscle is positioned at the steel strand wires at center to be avoided corroding, and steel strand wires are remarkableImproved elastic modelling quantity and the shearing strength of FRP muscle, meanwhile, carbon fiber tape is solidificated on FRP muscle, because carbon fiber bundle has veryHigh alkali resistant corrosive nature still can keep good bond and anchor property, FRP muscle, steel strand wires and carbon fiber after caustic corrosionBand is firmly combined into an entirety, mutually supports, jointly stressed, and synergy, makes new type compound FRP muscle have higherBond and anchor property after elastic modelling quantity, shearing strength and alkali corrosion resistance, is suitable for use as the longitudinal stress of concrete component moreReinforcing bar.
In order to verify the adhesive property after elastic modelling quantity, shearing strength and the caustic corrosion of new type compound FRP muscle. Zhengzhou is largeLearn building material and structural research Central Radical according to described in embodiment, produced the FRP muscle of a collection of diameter 16mm. Utilize omnipotent electric liquidServo testing machine, is respectively 4 groups of FRP muscle of 0%, 14.05%, 20.15% and 27.30% to steel strand wires volume fraction, 5 every group, enterRow tension and shear test, result of the test is in table 1. (surface is wound around respectively 2 groups of FRP muscle that are 14.05% by steel strand wires volume fractionNylon rope and carbon fiber bundle), 5 every group, put into aqueous slkali, consisting of in 1L deionized water of aqueous slkali contains 118.5gCa2 (OH), 0.9gNaOH, 4.2gKOH, under normal temperature, keep after 150d, adopt the long bond type anchorage of 300mm to test its bond-anchoragePerformance, result of the test is in table 2.
The mechanical property test result of table 1 new type compound FRP muscle
Bond and anchor property after the corrosion of table 2 new type compound FRP muscle aqueous slkali
Result of the test shows, steel strand wires are little on the tensile strength impact of new type compound FRP muscle, but significantly improvedThe elastic feel quantity of FRP muscle and shearing strength, and new type compound FRP muscle is reaching after its shearing strength peak value, still has the later stage strongDegree and deformability; FRP muscle is after aqueous slkali corrosion, and the new type compound FRP muscle that adopts carbon fiber bundle to be wound around recessed rib has moreGood bond and anchor property.
Finally should be noted that: above embodiment is only in order to the technical solution of the utility model to be described but not to its limitSystem; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field shouldUnderstand: still can modify or part technical characterictic is equal to and is replaced detailed description of the invention of the present utility modelChange; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the technical scheme of the utility model request protectionIn the middle of scope.
Claims (6)
1. a new type compound FRP muscle, is characterized in that: comprise FRP muscle, be located at steel strand wires and the winding at FRPJin centerBe adhesively fixed on the outer field carbon fiber tape of FRP muscle, described steel strand wires are heating and curing in described FRP muscle by thermosetting resin,Described carbon fiber tape is heating and curing on described FRP muscle by thermosetting resin.
2. a kind of new type compound FRP muscle according to claim 1, is characterized in that: described steel strand wires employing standard is anti-Tensile strength is the galvanized strand wires of 1720MPa, and the fibre bundle in described FRP muscle adopts continuous glass fiber bundle, basalt fibreDimension bundle or carbon fiber bundle, described carbon fiber tape adopts the carbon fiber bundle that TEX is 300.
3. a kind of new type compound FRP muscle according to claim 2, is characterized in that: in described FRP muscle, and described fiberBundle be heating and curing after the volume ratio of thermosetting resin matrix be 2.4:1.
4. a kind of new type compound FRP muscle according to claim 1, is characterized in that: described steel strand wires are in NEW TYPE OF COMPOSITEVolume fraction in type FRP muscle is 14.05%, 20.15% or 27.30%.
5. according to the arbitrary described a kind of new type compound FRP muscle of claim 1～4, it is characterized in that: described carbon fiber tape twinesForm depressed rib around being fixed on described FRP muscle.
6. a kind of new type compound FRP muscle according to claim 5, is characterized in that: the rib spacing of described depressed rib andRib is respectively 18mm and 2.1mm deeply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067527.2U CN205259457U (en) | 2015-12-21 | 2015-12-21 | Novel compound FRP muscle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521067527.2U CN205259457U (en) | 2015-12-21 | 2015-12-21 | Novel compound FRP muscle |
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| CN205259457U true CN205259457U (en) | 2016-05-25 |
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| CN201521067527.2U Active CN205259457U (en) | 2015-12-21 | 2015-12-21 | Novel compound FRP muscle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401695A (en) * | 2015-12-21 | 2016-03-16 | 郑州大学 | Novel composite FRP bar |
| CN107060852A (en) * | 2017-01-22 | 2017-08-18 | 北京工业大学 | A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires |
-
2015
- 2015-12-21 CN CN201521067527.2U patent/CN205259457U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401695A (en) * | 2015-12-21 | 2016-03-16 | 郑州大学 | Novel composite FRP bar |
| CN105401695B (en) * | 2015-12-21 | 2017-08-25 | 郑州大学 | A kind of new type compound FRP muscle |
| CN107060852A (en) * | 2017-01-22 | 2017-08-18 | 北京工业大学 | A kind of FRP hollow grouting anchoring-bolts of embedded steel strand wires |
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