CN109944459A - A kind of bracing means and reinforcement means using carbon cloth reinforced non-uniform beam - Google Patents
A kind of bracing means and reinforcement means using carbon cloth reinforced non-uniform beam Download PDFInfo
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- CN109944459A CN109944459A CN201910289754.6A CN201910289754A CN109944459A CN 109944459 A CN109944459 A CN 109944459A CN 201910289754 A CN201910289754 A CN 201910289754A CN 109944459 A CN109944459 A CN 109944459A
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- Prior art keywords
- carbon cloth
- uniform beam
- pressing plate
- bracing means
- carbon
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- 239000004744 fabric Substances 0.000 title claims abstract description 86
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 84
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 230000002787 reinforcement Effects 0.000 title claims abstract description 17
- 239000003292 glue Substances 0.000 claims abstract description 23
- 229920000297 Rayon Polymers 0.000 claims abstract description 22
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 230000006866 deterioration Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004567 concrete Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a kind of bracing means and reinforcement means using carbon cloth reinforced non-uniform beam, bracing means includes carbon cloth, several pressing plates and several high-strength bolts, carbon cloth is pasted on non-uniform beam in longitudinal tension stress state, several anchor holes are offered in the beam body of the non-uniform beam of carbon cloth longitudinal direction two sides, several pressing plates are covered on the covering of the length direction interval on the carbon cloth and along the carbon cloth and lay, pressing plate is bolted by high-strength bolt and is fixed, carbon cloth to be pressed between the pressing plate and non-uniform beam, filled with the first viscose glue to be fixed on the screw rod is cementing in anchor hole between screw rod and anchor hole.It has the following advantages: reinforcing non-uniform beam operates easy for construction, pollution stressed effect that is small, optimizing carbon fiber reinforcement non-uniform beam, carbon fibre material performance is given full play to.
Description
Technical field
The present invention relates to the reinforcement technique field of concrete structure more particularly to a kind of carbon cloth reinforced variable cross-sections of use
The bracing means and reinforcement means of beam.
Background technique
The representative arch bridge and continuous bridge built up China's the 1960s and the seventies reaches certain mostly
Service life is reinforced, improves bearing capacity, to meet existing specification.Bridge strengthening maintenance research is main mostly at present
It is less to the research of arch bridge, nonprismatic beam for uniform beam.And existing reinforcement technique, as Enlargement of Section, arrangement of reinforcement add
Gu the tradition reinforcement means such as method, outer patch steel plate reinforcement method carries out reinforcing to curved beam, there are constructing operation complexity, anti-corrosion effect are poor, right
The problems such as environmental pollution is serious.Current carbon cloth reinforced concrete structure can guarantee total with original structure in scope of design
Same stress, restraint crack development, improves stress performance, and antiseptic property is excellent, and constructing operation is easy, short construction period, surrounding ring
Border interference is small.So carbon cloth in many concrete structures using increasingly extensive, but reinforce in variable-section beam structure and also compare
Less, the consolidation effect of ruggedized construction device has to be hoisted.
Summary of the invention
The present invention provides a kind of bracing means and reinforcement means using carbon cloth reinforced non-uniform beam, which overcome
The deficiencies in the prior art described in background technology.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of bracing means using carbon cloth reinforced non-uniform beam, it includes carbon cloth, several pressing plates and several
High-strength bolt, the high-strength bolt include screw rod and nut, which is pasted on non-uniform beam in longitudinal tension stress state,
Several anchor holes are offered in the beam body of the non-uniform beam of the carbon cloth longitudinal direction two sides, which is pressed on the carbon fiber in advance
Length direction interval on cloth and along the carbon cloth is laid, which is bolted by the cooperation of the high-strength bolt and anchor hole at this
On non-uniform beam, and carbon cloth is pressed between the pressing plate and non-uniform beam, first is filled between the screw rod and anchor hole
Viscose glue is to be fixed on the screw rod is cementing in anchor hole.Among one embodiment: being filled between the carbon cloth and the opposite face of pressing plate
There is the second viscose glue so that the pressing plate is closely bonded with the carbon cloth.
Among one embodiment: the aperture of the anchor hole is greater than 1-3mm between screw rod.
Among one embodiment: being covered on the longitudinally perpendicular longitudinal direction in carbon cloth of the pressing plate on the carbon cloth.
Among one embodiment: the carbon cloth is pasted on the non-uniform beam by epoxy resin.
Among one embodiment: first viscose glue is epoxy resin.
Among one embodiment: second viscose glue is epoxy resin.
Among one embodiment: further including several gaskets, which is located between nut and pressing plate.
Among one embodiment: the pressing plate is sheet metal.
The reinforcement means of above-mentioned bracing means, comprising:
Step 1, the deterioration layer on non-uniform beam surface to be reinforced is removed, and in the position of non-uniform beam affixing carbon fabric
Carry out dabbing processing；
Step 2, the first viscose glue and corresponding insertion screw rod are injected in each anchor hole；
Step 3, it will be coated in one side that the position of non-uniform beam affixing carbon fabric and carbon cloth are pasted with beam body viscous
Glue；
Step 4, positioning and precompressed are carried out to carbon cloth, bolt enters pressing plate and nut and applies 50% to nut on screw rod
Design torque；
Step 5, pretension is longitudinally applied to design value to carbon cloth；
Step 6, to the second viscose glue is coated on the opposite face of carbon cloth and pressing plate, make the close affixing carbon fabric of pressing plate；
Step 7, the design torque for applying remaining 50% to nut superposition, makes pressing plate closely compress carbon cloth completely
And non-uniform beam is reinforced together with carbon cloth.
Among one embodiment: the design pretension that the carbon cloth is longitudinally applied to passes through the two of the jack pair carbon cloth
End is applied.
The technical program compared with the background art, it has the following advantages:
1, non-uniform beam is reinforced using carbon cloth, favorable anti-corrosion effect and soft easily repairing are reinforced to become and be cut
Beam operation in face is easy for construction, pollution is small.
2, pressing plate is fitted closely by carbon cloth by high-strength bolt and pressure is applied to it, can inhibit carbon cloth from Liang Jie
Face removing, improves interface peel intensity, optimizes the stressed effect of carbon fiber reinforcement non-uniform beam, give full play to carbon fibre material
Performance.
3, screw rod is anchored in beam body using the first viscose glue, it is small to the damage of non-uniform beam and can be preferably by screw rod
It is locked in concrete.
It 4, further include several gaskets, which is located between nut and pressing plate, can reduce nut to pressing plate using gasket
Stress concentrate injury.
5, in the reinforcement means, stress is applied to carbon cloth, which answers with what non-uniform beam stress generated
Power plays preferable consolidation effect to non-uniform beam on the contrary, carbon cloth high-strength light feature therefore can be given full play to.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is beam bottom detail design bottom view.
Fig. 2 is described in the present embodiment using the partial schematic diagram of the bridge of carbon cloth reinforced non-uniform beam.
Fig. 3 is the structural schematic diagram of this carbon cloth.
Fig. 4 is the structural schematic diagram of pressing plate.
Fig. 5 is the fit structure schematic diagram of screw rod, nut and gasket.
Fig. 6 is the fit structure schematic diagram of screw rod, nut, pressing plate and gasket.
Specific embodiment
Please refer to Fig. 1 to Fig. 6, a kind of bracing means using carbon cloth reinforced non-uniform beam, described in the present embodiment
Non-uniform beam is bridge, which includes carbon cloth 10, several pressing plates 20 and several high-strength bolts, the high-strength bolt packet
Screw rod 30 and nut 40 are included, which is pasted on non-uniform beam 100 and in longitudinal tension stress state, the carbon cloth
Several anchor holes 60 are offered in the beam body of the non-uniform beam 100 of 10 longitudinal two sides, which is covered on the carbon cloth
Length direction interval on 10 and along the carbon cloth 10, which covers, lays, and the both ends of the pressing plate 20 are equipped with preformed hole, the screw rod 30
It is implanted into corresponding anchor hole 60 to cooperate with nut 40 again after the preformed hole 21 of the pressing plate 20 and fixes 20 interlocking of pressing plate, simultaneously
Carbon cloth 10 is pressed between the pressing plate 20 and non-uniform beam 100, the first viscose glue is filled between the screw rod 30 and anchor hole
With by this, screw rod 30 is cementing is fixed in anchor hole.
The second viscose glue is filled between the carbon cloth 10 and the opposite face of pressing plate 20 so that the pressing plate 20 and the carbon fiber
Cloth 10 closely bonds.
Preferably, the aperture of the anchor hole is greater than 1-3mm between screw rod 30, and anchor hole is slightly larger than screw rod 30 deeply and is placed in anchor hole length
0.2cm。
In the present embodiment, this is covered on the longitudinally perpendicular in the vertical of carbon cloth 10 of the pressing plate 20 on the carbon cloth 10
To.
The carbon cloth 10 is pasted on the non-uniform beam 100 by epoxy resin, and first viscose glue and the second viscose glue are equal
Using epoxy resin.
It further include several gaskets 50, which is located between nut 40 and pressing plate 20, reduces when nut 40 screws tight to pressure
Plate 20 generates the harm that stress is concentrated.
Sheet metal can be used in the pressing plate 20, has certain deformability, can be preferably bonded and be pressed in variable cross-section
On the beam face of beam 100.
The reinforcement means of above-mentioned bracing means, comprising:
Step 1, the deterioration layer for removing 100 surface of non-uniform beam to be reinforced can be used sanding machine and remove non-uniform beam 100
On deterioration layer, and the position of 100 affixing carbon fabric 10 of non-uniform beam carry out dabbing processing 70, to increase carbon cloth 10
With the adhesive strength between non-uniform beam 100, which can be set as 0.2cm；
Step 2, the first viscose glue and corresponding insertion screw rod 30 are injected in each anchor hole；
Step 3, in the one side position of 100 affixing carbon fabric 10 of non-uniform beam and carbon cloth 10 and beam body pasted
Coat viscose glue；
Step 4, positioning and precompressed are carried out to carbon cloth 10, bolt enters pressing plate 20 and nut 30 and to nut on screw rod 30
30 apply 50% design torque；
Step 5, pretension is longitudinally applied to design value to carbon cloth 10；
Step 6, to the second viscose glue is coated on the opposite face of carbon cloth 10 and pressing plate 20, pressing plate 20 is made closely to paste carbon fiber
Tie up cloth 10；
Step 7, the design torque for applying remaining 50% to the superposition of nut 30, makes pressing plate 20 closely compress carbon fiber completely
Dimension cloth 10 is simultaneously and carbon cloth 10 reinforces non-uniform beam 100 together.
In the present embodiment, the design pretension which is longitudinally applied to passes through the jack pair carbon cloth 10
Both ends are applied.
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (11)
1. a kind of bracing means using carbon cloth reinforced non-uniform beam, it is characterised in that: including carbon cloth, several pressing plates
And several high-strength bolts, the high-strength bolt include screw rod and nut, which is pasted onto change in longitudinal tension stress state and cuts
On the beam of face, several anchor holes are offered in the beam body of the non-uniform beam of the carbon cloth longitudinal direction two sides, which is pressed in advance
Length direction interval on the carbon cloth and along the carbon cloth is laid, which passes through the cooperation of the high-strength bolt and anchor hole
Bolt is pressed between the pressing plate and non-uniform beam on the non-uniform beam, and by carbon cloth, is filled out between the screw rod and anchor hole
Filled with the first viscose glue to be fixed on the screw rod is cementing in anchor hole.
2. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1, it is characterised in that: should
Filled with the second viscose glue so that the pressing plate is closely bonded with the carbon cloth between carbon cloth and the opposite face of pressing plate.
3. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1, it is characterised in that: should
The aperture of anchor hole is greater than 1-3mm between screw rod.
4. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1, it is characterised in that: cover
Cover the longitudinally perpendicular longitudinal direction in carbon cloth of the pressing plate on the carbon cloth.
5. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1 or 2, feature exist
In: the carbon cloth is pasted on the non-uniform beam by epoxy resin.
6. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1 or 2, feature exist
In: first viscose glue is epoxy resin.
7. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 2, it is characterised in that: should
Second viscose glue is epoxy resin.
8. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1 or 2, feature exist
In: it further include several gaskets, which is located between nut and pressing plate.
9. a kind of bracing means using carbon cloth reinforced non-uniform beam according to claim 1, it is characterised in that: should
Pressing plate is sheet metal.
10. the reinforcement means of bracing means as claimed in claim 2, it is characterised in that: include:
Step 1, the deterioration layer on non-uniform beam surface to be reinforced is removed, and is carried out in the position of non-uniform beam affixing carbon fabric
Dabbing processing；
Step 2, the first viscose glue and corresponding insertion screw rod are injected in each anchor hole；
Step 3, viscose glue will be coated on the position of non-uniform beam affixing carbon fabric and carbon cloth and the one side of beam body stickup；
Step 4, positioning and precompressed are carried out to carbon cloth, bolt enters pressing plate and nut and setting to nut application 50% on screw rod
Count torque；
Step 5, pretension is longitudinally applied to design value to carbon cloth；
Step 6, to the second viscose glue is coated on the opposite face of carbon cloth and pressing plate, make the close affixing carbon fabric of pressing plate；
Step 7, to nut superposition apply remaining 50% design torque, make pressing plate completely closely compress carbon cloth and and
Carbon cloth reinforces non-uniform beam together.
11. the reinforcement means of bracing means according to claim 10, it is characterised in that: what the carbon cloth was longitudinally applied to
Design pretension is applied by the both ends of the jack pair carbon cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289754.6A CN109944459A (en) | 2019-04-11 | 2019-04-11 | A kind of bracing means and reinforcement means using carbon cloth reinforced non-uniform beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289754.6A CN109944459A (en) | 2019-04-11 | 2019-04-11 | A kind of bracing means and reinforcement means using carbon cloth reinforced non-uniform beam |
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|---|---|
| CN109944459A true CN109944459A (en) | 2019-06-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424278A (en) * | 2019-07-22 | 2019-11-08 | 山东大学 | A kind of construction method of the pre-stressed carbon fiber plate reinforcement of distributed anchoring |
| CN111959001A (en) * | 2020-08-03 | 2020-11-20 | 东莞市鑫泓科技有限公司 | Method for manufacturing carbon fiber decorative plate |
| CN112376934A (en) * | 2020-11-06 | 2021-02-19 | 中交四航工程研究院有限公司 | Beam plate reinforcing system and reinforcing method |
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|---|---|---|---|---|
| EP0799951A1 (en) * | 1996-04-04 | 1997-10-08 | Freyssinet International (Stup) | Method for reinforcing building constructions by means of glued carbon fibres |
| CA2221885A1 (en) * | 1996-11-21 | 1998-05-21 | University Technologies International, Inc. | Prestressing anchorage system for fiber reinforced plastic tendons |
| CN1970974A (en) * | 2005-11-24 | 2007-05-30 | 同济大学 | Construction process for pretension carbon fiber cloth reinforced concrete beam |
| CN101025047A (en) * | 2007-03-09 | 2007-08-29 | 华南理工大学 | External transverse prestressed steel reinforced concrete beam |
| JP2008007871A (en) * | 2006-06-28 | 2008-01-17 | Du Pont Toray Co Ltd | Reinforcing fiber sheet |
| CN203320978U (en) * | 2013-06-07 | 2013-12-04 | 华北水利水电大学 | Tensioning and anchoring device for prestressed carbon fiber sheet reinforced long-span concrete structure |
| CN103603509A (en) * | 2013-12-10 | 2014-02-26 | 山东双得利建设科技有限公司 | Carbon fiber fabric reinforced concrete beam and reinforcing method thereof |
| CN203742194U (en) * | 2014-02-26 | 2014-07-30 | 华侨大学 | Prestressed steel wire rope encircling reinforcing device of concrete beam |
| CN209874539U (en) * | 2019-04-11 | 2019-12-31 | 华侨大学 | Reinforcing device for reinforcing variable-section beam by adopting carbon fiber cloth |
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2019
- 2019-04-11 CN CN201910289754.6A patent/CN109944459A/en active Pending
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|---|---|---|---|---|
| EP0799951A1 (en) * | 1996-04-04 | 1997-10-08 | Freyssinet International (Stup) | Method for reinforcing building constructions by means of glued carbon fibres |
| CA2221885A1 (en) * | 1996-11-21 | 1998-05-21 | University Technologies International, Inc. | Prestressing anchorage system for fiber reinforced plastic tendons |
| CN1970974A (en) * | 2005-11-24 | 2007-05-30 | 同济大学 | Construction process for pretension carbon fiber cloth reinforced concrete beam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424278A (en) * | 2019-07-22 | 2019-11-08 | 山东大学 | A kind of construction method of the pre-stressed carbon fiber plate reinforcement of distributed anchoring |
| CN110424278B (en) * | 2019-07-22 | 2021-07-06 | 山东大学 | Construction method of distributed anchored prestressed carbon fiber plate reinforcing beam |
| CN111959001A (en) * | 2020-08-03 | 2020-11-20 | 东莞市鑫泓科技有限公司 | Method for manufacturing carbon fiber decorative plate |
| CN112376934A (en) * | 2020-11-06 | 2021-02-19 | 中交四航工程研究院有限公司 | Beam plate reinforcing system and reinforcing method |
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Application publication date: 20190628 |