CN109838036A - A kind of pipe-reinforced composite reinforcing of FRP ripple - Google Patents
A kind of pipe-reinforced composite reinforcing of FRP ripple Download PDFInfo
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- CN109838036A CN109838036A CN201910200921.5A CN201910200921A CN109838036A CN 109838036 A CN109838036 A CN 109838036A CN 201910200921 A CN201910200921 A CN 201910200921A CN 109838036 A CN109838036 A CN 109838036A
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- Prior art keywords
- frp
- ripple
- bellows
- pipe
- composite reinforcing
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 60
- 239000002131 composite material Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 68
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 68
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 11
- 239000004917 carbon fiber Substances 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 4
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 claims description 2
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 claims description 2
- 101710107464 Probable pyruvate, phosphate dikinase regulatory protein, chloroplastic Proteins 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000000805 composite resin Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000010412 perfusion Effects 0.000 claims description 2
- 229920001225 polyester resin Polymers 0.000 claims description 2
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- 238000011417 postcuring Methods 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 abstract description 17
- 238000005452 bending Methods 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003653 coastal water Substances 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
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- 239000000243 solution Substances 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a kind of pipe-reinforced composite reinforcing of FRP ripple, the pipe-reinforced composite reinforcing of FRP ripple includes FRP bellows, Ribbed Bar and the binding material for being filled in gap between FRP bellows and reinforcing bar.The present invention becomes composite reinforcing after solidifying inner rib reinforcing bar and outside FRP bellows by binding material, composite reinforcing has good corrosion resistance；In composite reinforcing tension, FRP bellows can axially have biggish stretcher strain together with Ribbed Bar, overcome FRP material and break the shortcomings that should becoming smaller；Composite reinforcing has good shearing strength, customer service simple FRP tendons shearing strength low disadvantage；The concrete that the fluxion structure of FRP bellows helps to realize the reinforcing bar and outside internal with it all has good adhesive property；Composite reinforcing has good bending performance, and outside fiber is pulled off when FRP pipe fluxion structure avoids reinforcing bar from bending.Simple structure of the present invention, function admirable can be widely applied to the steel bar stress in corrosive environment civil engineering structure.
Description
Technical field
The invention belongs to civil engineering structure fields, refer in particular to a kind of pipe-reinforced composite reinforcing of FRP ripple.
Background technique
Carrying out large-scale infrastructure construction, and Middle Eastern infrastructure construction comparatively perfect, base in China
Infrastructure is built center and is just gradually shifted to western, south and offshore area, built in succession in recent years Donghai Bridge,
The sea-crossing engineerings such as Construction of Hangzhou Bay Cross-sea Bridge and port Zhuhai and Macao bridge, coastal waters even deep-sea engineering construction are that following important construction is appointed
Business.The biggest problem that civil engineering construction encounters in ocean and other corrosive environments is exactly etching problem, reinforced concrete member
Etching problem can not be ignored, while being insoluble critical issue again.How coastal waters even deep-sea civil engineering knot is ensured
The anticorrosion and endurance issues of structure are the significant problems for being difficult to solve to have to solve.Reinforcing bar in coastal waters and corrosive environment
The corrosion of Steel Bars in Concrete Structure not only causes the reduction of reinforcing bar self performance, while will cause concrete cracking, stirrup pair
A variety of unfavorable factors such as the effect of contraction reduction of core concrete ultimately cause the durability drop of reinforced concrete member and structure
It is low, influence the service life and structure safety of structure.Therefore, volume is needed in reinforced concrete structure construction in corrosive environment
Outer investment substantial contribution takes measures to avoid the rate of reinforcement corrosion or reduction reinforcement corrosion.
FRP (Fiber Reinforced Plastics) material has that corrosion-resistant, tensile strength is high, light weight, electromagnetism are exhausted
Edge performance is good, Strength Mass is than many advantages such as big, while the material belongs to that fragile material, shearing strength are low, compression strength is low,
The disadvantages of price is slightly higher.In recent years, more and more researchs and application have been obtained in field of civil engineering.FRP material is in building
Application form in engineering mainly includes FRP tendons, FRP cloth, FRP rope or twisted wire, FRP profile etc..If FRP tendons are individually used for
Concrete component and structure, existing FRP tendons other FRP tendons modular ratio reinforcing bar elasticity modulus in addition to CFRP tendons are low, and institute
Having FRP tendons tensile stress-strain stress relation is straight line, is stretched as brittle fracture.FRP tendons resistance to compression and shear behavior are worse.FRP tendons list
When being solely used in concrete structure, FRP tendons concrete structure member crevices and amount of deflection is excessive, brittle break under extreme case, meizoseismal area
Energy dissipation capacity is lower, these unfavorable factors greatly hinder FRP tendons and are individually used for concrete component and structure.
The composite reinforcing for being illustrated in figure 4 the FRP package Ribbed Bar that common Ribbed Bar, FRP tendons, prior art propose is drawn
Stretch-elongation (F-l) curve, wherein a is elongation when Ribbed Bar is surrendered, and b is that FRP tendons break elongation, and c is with ribbing
Reinforcing bar breaks elongation.According to curve in figure, OAFB is the F-l curve of common Ribbed Bar, and OC is FRP tendons F-l curve,
ODECH is the F-l curve that the FRP that prior art proposes wraps up Ribbed Bar, it can be seen from the figure that prior art proposed
FRP wraps up Ribbed Bar and constitutes composite reinforcing stretcher strain together with reinforcing bar since the initial stage, but FRP material is in smaller drawing
It is broken, disappears after FRP fracture to the protective effect of reinforcing bar, composite reinforcing bearing capacity reduces suddenly, to compound when stretching strain
The stress of muscle structure is unfavorable.Simultaneously as FRP tendons are broken, strain is smaller, and the composite reinforcing that prior art proposes is in bending, tension
Side fiber is broken in advance, shielding failure of the bending place to reinforcing bar.
Summary of the invention
It is an object of the invention to be adapted to larger stretcher strain in view of the above-mentioned problems, inventing one kind and can bend
The pipe-reinforced composite reinforcing of FRP ripple.
The purpose of the present invention can use following technical scheme:
A kind of pipe-reinforced composite reinforcing of FRP ripple, including FRP bellows 1, Ribbed Bar 3 and FRP bellows and with rib steel
The binding material 2 in gap between muscle.It is bonded between FRP bellows 1 and Ribbed Bar 3 by binding material 2.Described
FRP bellows is prepared using the fibre reinforced plastics of the unlike materials such as CFRP, GFRP, BFRP, AFRP, and corrugated shape can adopt
With the shapes such as triangle, arc, trapezoidal, zigzag.The reinforcing bar is Ribbed Bar.Epoxy can be used in the binding material
Resin glue, polyester resin, high-strength mortar grouting material or UHPC concrete.
Two ways preparation can be used in the pipe-reinforced composite reinforcing of FRP ripple, first is that directly in Ribbed Bar outer surface
By binding material and FRP bellows pultrusion one-pass molding；Second is that first then FRP bellows pultrusion is penetrated Ribbed Bar
And it is fixed temporarily, perfusion or pressure injection binding material in the gap between the FRP bellows and Ribbed Bar.Described is with ribbing
The ribbed formula of reinforcing bar can be Rib Reinforced, Herringbone fins, helical rib or circumference parallel rib form.
The invention has the following beneficial effects:
1. common carbon steel Ribbed Bar is penetrated FRP bellows by the present invention, between Ribbed Bar and FRP bellows between
Gap is binding material.Carbon steel Ribbed Bar can be isolated with corrosive environment for FRP bellows and binding material, to avoid band rib steel
The corrosion of muscle, plays a good protective effect to reinforcing bar.Composite reinforcing has good corrosion resistance.
2. when composite reinforcing tension of the present invention, FRP bellows and Ribbed Bar bear axial tension together, can be total to
With the larger stretcher strain of generation.FRP material itself break strain it is smaller, FRP corrugated shape can to avoid composite reinforcing stretching when
FRP material produces fracture too early, improves the tension deformability of composite reinforcing, as shown in Figure 5.It is of the present invention compared with Fig. 4
OLG or OKHMJ curve in the pulling force-elongation curve such as figure of composite reinforcing, it can be seen that, stretcher strain ability greatly improves.
It is Ribbed Bar inside composite reinforcing 3. the present invention solves the problems, such as that simple FRP tendons shearing strength is low, with outside
FRP bellows can work together, shearing strength with higher.
4. FRP fluxion structure of the invention helps to enhance FRP pipe and inner rib reinforcing bar and and external concrete
Adhesion strength, can preferably be used for concrete structure.
5. the pipe-reinforced composite reinforcing of FRP ripple of the present invention has good bending performance, FRP when composite reinforcing is bent
Fluxion structure can be to avoid then FRP fiber is broken too early outside bending angle.
Detailed description of the invention
To be illustrated more clearly that the technical solution of the invention implemented, below by embodiment of the present invention and prior art institute
Attached drawing to be used is needed simply to be introduced.It is clear that the accompanying drawings in the following description is only the present invention and the prior art
Some case study on implementation, to those of ordinary skill in the art's other similar reality obtained without creative efforts
Case is applied, shall fall within the protection scope of the present invention.
Fig. 1 is the organigram of the pipe-reinforced composite reinforcing of FRP ripple of the present invention；
Fig. 2 is FRP bellows corrugated shape schematic diagram
Fig. 3 is the pipe-reinforced composite reinforcing bending state schematic diagram of FRP ripple；
Fig. 4 is regular reinforcement, FRP tendons, drawing force-elongation relation schematic diagram of existing FRP winding Ribbed Bar.
Fig. 5 is drawing force-elongation relation schematic diagram of the pipe-reinforced composite reinforcing of FRP ripple of the present invention.
In figure, 1-FRP bellows；2- binding material；3- Ribbed Bar.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is purged, is complete
Site preparation explanation, it is clear that embodiment of the present invention is only a part of the embodiment of the present invention, based on the embodiment of the present invention,
Those of ordinary skill in the art's every other embodiment obtained without making creative work belongs to this
Invention protection scope.
Embodiment 1
A kind of preparation method of the pipe-reinforced composite reinforcing of FRP ripple, first according to FRP corrugated design and processing and fabricating ripple
Inner membrance and external mold, by carbon fiber bundle by pulling device under certain pultrusion rate draw, carbon fiber bundle is from extruder yarn
It is taken off on frame, into the steeping vat that epoxy resin is housed, fibre bundle is sufficiently impregnated uniformly by resin matrix, and then annular passes through wave
Line inner membrance, the side pressure upper ripple line external mold outside ripple inner membrance and carbon fiber bundle, then by round high temperature mouth mold, integrally curing at
Type.Ripple inner membrance and ripple external mold are removed, the molding FRP bellows of primary solidification is further passed through into post-curing oven high temperature and is consolidated
Change, forms the circle corrugated pipe of continuous fibre enhancement resin composite material.Ribbed Bar is penetrated into hot setting FRP after molding
Bellows, and Ribbed Bar is temporarily fixed on to the center of FRP bellows, then from Ribbed Bar and FRP bellows
The one end in gap is pressed into or pours into the binding materials such as high-strength mortar grouting material, epoxy resin or UHPC concrete, material to be bonded
Material reaches the i.e. production of completion composite reinforcing after intensity.
Embodiment 2
Ribbed Bar is passed through the impregnation equipped with epoxy resin by a kind of preparation method of the pipe-reinforced composite reinforcing of FRP ripple
Slot makes Ribbed Bar surface be uniformly coated with certain thickness epoxide-resin glue, by carbon fiber bundle by pulling device centainly to draw
It squeezes under rate draw, carbon fiber bundle is taken off from extruder creel, into the steeping vat that epoxy resin is housed, fibre bundle quilt
Resin matrix is sufficiently impregnated, and then annular passes through the Ribbed Bar for being stained with certain thickness epoxide-resin glue, and all with Ribbed Bar
Then the epoxy resin gluing knot enclosed passes through round high temperature mouth mold, integral solidifying.Composite reinforcing after curing molding is put into
Curing apparatus solidifies after carrying out afterwards, obtains the pipe-reinforced composite reinforcing of FRP ripple of the present invention.
The external FRP bellows of the composite reinforcing is using in carbon fiber, glass fibre, basalt fibre and aramid fiber
A kind of combining form of fiber or multiple fiber.
The corrugated shape of the FRP bellows can be the form of sine wave, rectangular wave, triangular wave.
Claims (8)
1. a kind of pipe-reinforced composite reinforcing of FRP ripple, it is characterised in that: including FRP bellows (1), Ribbed Bar (3) and FRP wave
The binding material (2) in gap between line pipe and Ribbed Bar；Pass through binding material between FRP bellows (1) and Ribbed Bar (3)
(2) it is bonded.
2. a kind of pipe-reinforced composite reinforcing of FRP ripple according to claim 1, it is characterised in that: the FRP bellows
It is prepared using CFRP, GFRP, BFRP or AFRP fibre reinforced plastics.
3. a kind of pipe-reinforced composite reinforcing of FRP ripple according to claim 1, it is characterised in that: the ripple of FRP bellows 1
Shape uses triangle, arc, trapezoidal or saw-toothed shape.
4. a kind of pipe-reinforced composite reinforcing of FRP ripple according to claim 1, it is characterised in that: the binding material is adopted
With epoxide-resin glue, polyester resin, high-strength mortar grouting material or UHPC concrete.
5. a kind of pipe-reinforced composite reinforcing of FRP ripple according to claim 1, it is characterised in that: the FRP bellows-
Reinforcing bar composite reinforcing is prepared using two ways, first is that directly in Ribbed Bar outer surface by binding material and FRP bellows pultrusion
One-pass molding；Second is that first then FRP bellows pultrusion being penetrated Ribbed Bar and being fixed temporarily, in the FRP bellows
Perfusion or pressure injection binding material in gap between Ribbed Bar.
6. a kind of pipe-reinforced composite reinforcing of FRP ripple according to claim 1, it is characterised in that: the Ribbed Bar
Ribbed formula is Rib Reinforced, Herringbone fins, helical rib or circumference parallel rib form.
7. a kind of preparation method of the pipe-reinforced composite reinforcing of FRP ripple, it is characterised in that: according to FRP corrugated design and process first
Make ripple inner membrance and external mold, by carbon fiber bundle by pulling device under certain pultrusion rate draw, carbon fiber bundle from
It is taken off on extruder creel, into the steeping vat that epoxy resin is housed, fibre bundle is sufficiently impregnated uniformly by resin matrix, then ring
Shape passes through ripple inner membrance, and the side pressure upper ripple line external mold outside ripple inner membrance and carbon fiber bundle is whole then by round high temperature mouth mold
Curing molding；Ripple inner membrance and ripple external mold are removed, the molding FRP bellows of primary solidification is further passed through into post-curing oven height
Temperature solidification, forms the circle corrugated pipe of continuous fibre enhancement resin composite material；After Ribbed Bar is penetrated hot setting molding
FRP bellows, and Ribbed Bar is temporarily fixed on to the center of FRP bellows, then from Ribbed Bar and FRP ripple
The one end in the gap of pipe is pressed into or pours into the binding materials such as high-strength mortar grouting material, epoxy resin or UHPC concrete, to viscous
Knot material reaches the i.e. production of completion composite reinforcing after intensity.
8. a kind of preparation method of the pipe-reinforced composite reinforcing of FRP ripple, it is characterised in that: pass through Ribbed Bar and asphalt mixtures modified by epoxy resin is housed
The steeping vat of rouge, makes Ribbed Bar surface be uniformly coated with certain thickness epoxide-resin glue, and carbon fiber bundle is passed through pulling device
With under certain pultrusion rate draw, carbon fiber bundle is taken off from extruder creel, into be equipped with epoxy resin steeping vat,
Fibre bundle is sufficiently impregnated by resin matrix, and then annular, which passes through, is stained with the Ribbed Bar of certain thickness epoxide-resin glue, and with band
Then epoxy resin gluing knot around rib reinforcement passes through round high temperature mouth mold, integral solidifying；By answering after curing molding
It closes muscle and is put into after rear curing apparatus carries out and solidify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910200921.5A CN109838036A (en) | 2019-03-18 | 2019-03-18 | A kind of pipe-reinforced composite reinforcing of FRP ripple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910200921.5A CN109838036A (en) | 2019-03-18 | 2019-03-18 | A kind of pipe-reinforced composite reinforcing of FRP ripple |
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| Publication Number | Publication Date |
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| CN109838036A true CN109838036A (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910200921.5A Pending CN109838036A (en) | 2019-03-18 | 2019-03-18 | A kind of pipe-reinforced composite reinforcing of FRP ripple |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173072A (en) * | 2019-06-20 | 2019-08-27 | 福州大学 | A kind of FRP-UHPC combination T-type beam |
| CN110821047A (en) * | 2019-12-13 | 2020-02-21 | 南通装配式建筑与智能结构研究院 | Composite steel bar FRP stirrup and preparation method thereof |
| CN115724620A (en) * | 2022-11-11 | 2023-03-03 | 香港理工大学 | Steel-corrugation-free combined rib and preparation method and application thereof |
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| FR2264942B1 (en) * | 1974-03-21 | 1977-06-17 | Desbordes Jean Louis | |
| CN102979965A (en) * | 2011-09-07 | 2013-03-20 | 上海启鹏工程材料科技有限公司 | Fiber reinforced polymer (FRP) tendon and stainless steel tube composite and preparation technology thereof |
| CN103419375A (en) * | 2012-05-18 | 2013-12-04 | 翁庆隆 | Method for manufacturing mobile phone shell with concave side wall and structure thereof |
| CN103477001A (en) * | 2011-05-18 | 2013-12-25 | 东拓工业株式会社 | Sheath for PC steel |
| CN104775567A (en) * | 2015-03-20 | 2015-07-15 | 深圳大学 | Novel FRP-steel composite force-bearing rib and preparation method thereof |
| CN205591430U (en) * | 2015-12-23 | 2016-09-21 | 清华大学 | Reinforcing steel bar subassembly |
| CN107366388A (en) * | 2017-07-26 | 2017-11-21 | 哈尔滨工业大学 | A kind of closed square-section FRP stirrups and preparation method thereof |
-
2019
- 2019-03-18 CN CN201910200921.5A patent/CN109838036A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2264942B1 (en) * | 1974-03-21 | 1977-06-17 | Desbordes Jean Louis | |
| CN103477001A (en) * | 2011-05-18 | 2013-12-25 | 东拓工业株式会社 | Sheath for PC steel |
| CN102979965A (en) * | 2011-09-07 | 2013-03-20 | 上海启鹏工程材料科技有限公司 | Fiber reinforced polymer (FRP) tendon and stainless steel tube composite and preparation technology thereof |
| CN103419375A (en) * | 2012-05-18 | 2013-12-04 | 翁庆隆 | Method for manufacturing mobile phone shell with concave side wall and structure thereof |
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| CN107366388A (en) * | 2017-07-26 | 2017-11-21 | 哈尔滨工业大学 | A kind of closed square-section FRP stirrups and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173072A (en) * | 2019-06-20 | 2019-08-27 | 福州大学 | A kind of FRP-UHPC combination T-type beam |
| CN110821047A (en) * | 2019-12-13 | 2020-02-21 | 南通装配式建筑与智能结构研究院 | Composite steel bar FRP stirrup and preparation method thereof |
| CN115724620A (en) * | 2022-11-11 | 2023-03-03 | 香港理工大学 | Steel-corrugation-free combined rib and preparation method and application thereof |
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