CN106812537A - A kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar - Google Patents
A kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar Download PDFInfo
- Publication number
- CN106812537A CN106812537A CN201710057624.0A CN201710057624A CN106812537A CN 106812537 A CN106812537 A CN 106812537A CN 201710057624 A CN201710057624 A CN 201710057624A CN 106812537 A CN106812537 A CN 106812537A
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- Prior art keywords
- frp
- reinforcing bar
- jurisdiction
- section
- embedded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 66
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 18
- 210000003205 muscle Anatomy 0.000 claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 230000007797 corrosion Effects 0.000 claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 210000001624 hip Anatomy 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 8
- 206010039509 Scab Diseases 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000013007 heat curing Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 238000013036 cure process Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 46
- 239000011151 fibre-reinforced plastic Substances 0.000 description 46
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar, the concrete pipe sheet is formed by the FRP muscle net and casting concrete for embedding reinforcing bar；The FRP muscle net of embedded reinforcing bar is the skeleton of concrete pipe sheet, is arranged in concrete；Described FRP muscle net is formed by FRP principal rods, the FRP distributing reinforcements of embedded reinforcing bar, the FRP waists muscle of embedded reinforcing bar and the FRP stirrup colligations for embedding reinforcing bar；Traditional reinforcing bar is embedded in FRP muscle, and colligation is used in concrete pipe sheet into the FRP muscle net of embedded reinforcing bar, FRP and the respective advantage of reinforcing bar can be comprehensively utilized, fundamentally solve the problems, such as reinforcing bar easy-to-rust, poor durability in section of jurisdiction, and improve that the elastic modelling quantity of FRP is low, deformation is big and be in the mechanical characteristic of brittle break.Prepare take into account lightweight, high intensity, high elastic modulus, ductility high, high performance-price ratio and it is corrosion-resistant the advantages of embedded reinforcing bar FRP reinforced concretes section of jurisdiction.The section of jurisdiction is suitable for mechanical property and decay resistance requirement tunnel engineering high, and application prospect is extensive.
Description
Technical field
Composite, new construction research and development the invention belongs to fields such as building, traffic, water conservancies, and in particular to be used for one kind
The FRP reinforced concretes section of jurisdiction of the embedded reinforcing bar of tunnel engineering.Its feature is high intensity, ductility high, high elastic modulus, sexual valence high
Than with excellent corrosion resistance.
Background technology
Reinforced concrete segment is the most frequently used supporting construction in shield method tunnel engineering, and wherein reinforcing bar has elastic modelling quantity
It is high, the advantages of ductility is good.Section of jurisdiction need to have good durability as the secondary lining of tunnel engineering.Because of underground in tunnel engineering
There is easy-to-rust, poor durability in Shuifu County's collection, bad environments, reinforcing bar.
Fibre reinforced plastics (FRP) are by the continuous tow with drawing-resistant function and the polymeric matrix with cementation
Two parts are constituted.FRP is suitable to the requirement of the aspects such as Service Environment, durability as a kind of new construction material for having development potentiality
Important engineering structure high, such as underground structure, ocean structure.But FRP is still suffered from, and elastic modelling quantity is low, it is high simultaneously to deform big, price
In the problem of brittle break.
Traditional reinforcing bar is embedded in FRP muscle, and colligation is used in concrete pipe sheet into the FRP muscle net of embedded reinforcing bar, can be comprehensive
Close and utilize FRP and the respective advantage of reinforcing bar, fundamentally solve the problems, such as steel corrosion, and improve the mechanical property of FRP.Prepare
Go out to take into account lightweight, high intensity, high elastic modulus, ductility high, high performance-price ratio and it is corrosion-resistant the advantages of embedded reinforcing bar FRP muscle mix
Solidifying soil section of jurisdiction.
The content of the invention
The purpose of the present invention is directed to the deficiencies in the prior art, there is provided a kind of corrosion resistance and good, ductility are high, cost performance
The FRP reinforced concretes section of jurisdiction of high, elastic modelling quantity and intensity embedded reinforcing bar high.
To achieve these goals, the technical solution adopted in the present invention is：A kind of FRP reinforced concrete pipes of embedded reinforcing bar
Piece, the concrete pipe sheet is by the FRP muscle net of embedded reinforcing bar with coagulation local soil type into FRP muscle nets are arranged in concrete；Embedded reinforcing bar
FRP muscle net be the skeleton structure of concrete pipe sheet, the skeleton structure is arranged in concrete；Described FRP muscle nets are by embedding
The FRP principal rods of reinforcing bar, the FRP distributing reinforcements of embedded reinforcing bar, the FRP waists muscle of embedded reinforcing bar and FRP stirrup colligations are formed.Because of stirrup
The FRP stirrups for being primarily subjected to shear and embed reinforcing bar prepare complexity, therefore stirrup selects FRP stirrups.
Reinforcing bar is combined with each other with FRP layers by pultrusion molding process, and its surface filament then is wound in into screw thread
Shape and in its surface scab.
Described FRP layers is composited by continuous fiber and thermosetting resin, and continuous fiber selects basalt fibre, glass fibers
Dimension, carbon fiber or aramid fiber.
According to required mechanical performance index, the volume ratio of FRP material and reinforcing bar is calculated according to composite theory.
Pultrusion molding process is using the mould corresponding with circle.
A kind of moulding process for preparing of the FRP reinforced concretes section of jurisdiction of embedded reinforcing bar is：Send yarn → fiber impregnation → fiber collection
Beam → reinforcing bar insert → pass through mould pultrusion → brake forming → heat cure shaping → surface scab → bar-mat reinforcement colligation →
Formwork supporting plate → concreting → maintenance shaping.
A kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar of the present invention, by pultrusion heat cure moulding process by reinforcing bar and FRP
Layer is solidified togather, and enables reinforcing bar with the common stress of FRP, it is ensured that the supporting construction has good ductility.FRP layers of protection
Internal reinforcing bar is from environmental corrosion.The FRP muscle surface is stained with sand, it is ensured that its effective bonding with concrete.Fit the section of jurisdiction
For in mechanical property and decay resistance requirement tunnel engineering high.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the FRP reinforced concretes section of jurisdiction of embedded reinforcing bar；
Fig. 2 is A-A profiles；
Fig. 3 is the cross-sectional view of the FRP muscle of embedded reinforcing bar.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is explained in detail to technical scheme.
As depicted in figs. 1 and 2, this example provides a kind of FRP muscle section of jurisdiction of embedded reinforcing bar, and the structure is by embedding reinforcing bar
FRP muscle net and cast-in-place concrete layer 1 are constituted, and FRP muscle nets are arranged in cast-in-place concrete layer 1.The FRP muscle of described embedded reinforcing bar
Net is by the FRP principal rods 3 for embedding reinforcing bar, the FRP distributing reinforcements 4 for embedding reinforcing bar, 2 groups of FRP waists muscle 5 and FRP stirrups embedding reinforcing bar
Into component 2,3,4,5 is linked together by colligation.As shown in figure 3, the FRP muscle of described embedded reinforcing bar is by reinforcing bar 6, FRP layer
7 and scab 8 constitute.
The reinforcing bar 6 and fibre bundle that epoxy resin will be infiltrated send into pultrusion die together according to a certain percentage, then by its table
Face filament is wound in shape of threads, and curing molding is carried out and in its surface scab 8 using heat curing process.Fibre bundle and heating
The volume ratio of the epoxy resin-base after solidification is 2~3；The sectional area of described FRP layers 7 accounts for the total of the FRP muscle of embedded reinforcing bar
The 35~40% of sectional area.
A kind of preparation technology of the FRP reinforced concretes section of jurisdiction of embedded reinforcing bar is：Send yarn → fiber impregnation → collection of filaments →
Mould pultrusion → brake forming → heat cure shaping → surface scab → bar-mat reinforcement colligation → formwork is inserted → passed through to reinforcing bar
Plate → casting concrete → maintenance shaping.
The present invention is using traditional pultrusion heat cure moulding process and ordinary reinforced concrete structure preparation flow, scrap build
It is required that less, application prospect is extensive.
Claims (5)
1. the FRP reinforced concretes section of jurisdiction of a kind of embedded reinforcing bar, it is characterised in that：The concrete pipe sheet by embed reinforcing bar FRP muscle
Net and cast-in-place concrete layer are formed；The FRP muscle net of embedded reinforcing bar is the skeleton of concrete pipe sheet, is arranged in concrete；It is described
FRP muscle nets be by the FRP principal rods of embedded reinforcing bar, the FRP distributing reinforcements of embedded reinforcing bar, the FRP waists muscle of embedded reinforcing bar and FRP hoops
Muscle colligation is formed；
Reinforcing bar is combined with each other with FRP layers by pultrusion molding process, and its surface filament then is wound in into shape of threads simultaneously
In its surface scab；
Described FRP layers is composited by continuous fiber and thermosetting resin, continuous fiber from basalt fibre, glass fibre,
Carbon fiber or aramid fiber.
2. the FRP reinforced concretes section of jurisdiction of a kind of embedded reinforcing bar according to claim 1, it is characterised in that：According to required power
Performance indications are learned, the volume ratio of FRP material and reinforcing bar is calculated according to composite theory.
3. the FRP reinforced concretes section of jurisdiction of a kind of embedded reinforcing bar according to claim 1, it is characterised in that：Pultrusion work
Skill is using the mould corresponding with circle.
4. the FRP reinforced concretes section of jurisdiction of a kind of embedded reinforcing bar according to claim 1, it is characterised in that：The section of jurisdiction
Preparation technology is：Yarn → fiber impregnation → the collection of filaments → reinforcing bar is sent to insert → pass through mould pultrusion → brake forming → heat
Curing molding → surface scab → bar-mat reinforcement colligation → formwork supporting plate → concreting → maintenance shaping.
5. the FRP reinforced concretes section of jurisdiction of a kind of embedded reinforcing bar according to claim 1, it is characterised in that：By pultrusion heat
Be solidified togather for reinforcing bar and FRP layers by cure process, enables reinforcing bar with the common stress of FRP, it is ensured that the supporting construction
With good ductility.FRP layers is protected internal reinforcing bar from environmental corrosion.The FRP muscle surface is stained with sand, it is ensured that itself and coagulation
Effective bonding of soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057624.0A CN106812537A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057624.0A CN106812537A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106812537A true CN106812537A (en) | 2017-06-09 |
Family
ID=59112454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710057624.0A Pending CN106812537A (en) | 2017-01-22 | 2017-01-22 | A kind of FRP reinforced concretes section of jurisdiction of embedded reinforcing bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106812537A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503767A (en) * | 2017-10-13 | 2017-12-22 | 北京工业大学 | A kind of precast concrete FRP corrugated platings tunnel bottom construction method for supporting |
| CN110284923A (en) * | 2019-06-21 | 2019-09-27 | 铜陵有色金属集团股份有限公司 | A kind of tensile type armored concrete drop shaft liner structure |
| CN111365018A (en) * | 2020-03-25 | 2020-07-03 | 上海同岩土木工程科技股份有限公司 | Cover arch reinforcement method suitable for small tunnel clearance |
| CN111501383A (en) * | 2020-04-08 | 2020-08-07 | 潍坊中创新材料科技有限公司 | Novel basalt fiber composite rib and preparation method and application thereof |
| CN113622967A (en) * | 2020-05-08 | 2021-11-09 | 新疆大学 | FRP (fiber reinforced plastic) -steel wire mesh framework plastic composite pipe constraint coal gangue concrete pier column and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900668Y (en) * | 2006-07-10 | 2007-05-16 | 东南大学 | Composite bar material |
| CN104060768A (en) * | 2014-06-19 | 2014-09-24 | 四川航天五源复合材料有限公司 | Industrial preparation method of steel-continuous-fiber composite bar with rib texture |
| CN104775567A (en) * | 2015-03-20 | 2015-07-15 | 深圳大学 | Novel FRP-steel composite force-bearing rib and preparation method thereof |
| CN105880854A (en) * | 2016-06-01 | 2016-08-24 | 沈阳中翯机器人有限公司 | Segment steel reinforcement cage for tunnel, automatic welding machine and manufacture method |
-
2017
- 2017-01-22 CN CN201710057624.0A patent/CN106812537A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2900668Y (en) * | 2006-07-10 | 2007-05-16 | 东南大学 | Composite bar material |
| CN104060768A (en) * | 2014-06-19 | 2014-09-24 | 四川航天五源复合材料有限公司 | Industrial preparation method of steel-continuous-fiber composite bar with rib texture |
| CN104775567A (en) * | 2015-03-20 | 2015-07-15 | 深圳大学 | Novel FRP-steel composite force-bearing rib and preparation method thereof |
| CN105880854A (en) * | 2016-06-01 | 2016-08-24 | 沈阳中翯机器人有限公司 | Segment steel reinforcement cage for tunnel, automatic welding machine and manufacture method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503767A (en) * | 2017-10-13 | 2017-12-22 | 北京工业大学 | A kind of precast concrete FRP corrugated platings tunnel bottom construction method for supporting |
| CN107503767B (en) * | 2017-10-13 | 2019-04-12 | 北京工业大学 | A kind of precast concrete-FRP corrugated plating tunnel bottom construction method for supporting |
| CN110284923A (en) * | 2019-06-21 | 2019-09-27 | 铜陵有色金属集团股份有限公司 | A kind of tensile type armored concrete drop shaft liner structure |
| CN111365018A (en) * | 2020-03-25 | 2020-07-03 | 上海同岩土木工程科技股份有限公司 | Cover arch reinforcement method suitable for small tunnel clearance |
| CN111501383A (en) * | 2020-04-08 | 2020-08-07 | 潍坊中创新材料科技有限公司 | Novel basalt fiber composite rib and preparation method and application thereof |
| CN111501383B (en) * | 2020-04-08 | 2021-06-18 | 潍坊中创新材料科技有限公司 | Novel basalt fiber composite rib and preparation method and application thereof |
| CN113622967A (en) * | 2020-05-08 | 2021-11-09 | 新疆大学 | FRP (fiber reinforced plastic) -steel wire mesh framework plastic composite pipe constraint coal gangue concrete pier column and construction method thereof |
| CN113622967B (en) * | 2020-05-08 | 2023-09-26 | 新疆大学 | FRP-steel wire mesh skeleton plastic composite pipe constraint gangue concrete pier column and construction method thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |
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| RJ01 | Rejection of invention patent application after publication |