CN206234492U - A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design - Google Patents
A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design Download PDFInfo
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- CN206234492U CN206234492U CN201621109911.9U CN201621109911U CN206234492U CN 206234492 U CN206234492 U CN 206234492U CN 201621109911 U CN201621109911 U CN 201621109911U CN 206234492 U CN206234492 U CN 206234492U
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- pccp
- carbon fiber
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Abstract
The utility model is related to a kind of pre-stressed carbon fiber reinforcing structure design of PCCP pipes, the PCCP pipes pre-stressed carbon fiber reinforcing structure to include successively from inboard to outside：Flexible barrier coating, carbon fibre cloth layer, elasticity and stiff assembly bed course and PCCP are managed（Prestressed concrete cylinder pipe）.The PCCP pipe pre-stressed carbon fiber reinforcing structures that the utility model is provided, by setting elastic insert, on the premise of ensureing PCCP pipes without obvious stress, increased the deflection of carbon fibre cloth layer, so as to increased the tension that carbon fibre cloth layer can bear, that is pre-stressed carbon fiber, and then reduce the stress for being distributed to PCCP pipes, avoid PCCP pipe concretes and crack or compressor wire fracture occur, the high intensity advantage of carbon fibre material is not fully exerted, farthest increased reinforcing effect of the carbon fiber to PCCP pipes.
Description
Technical field
The utility model is related to hydraulic engineering field, and in particular to a kind of PCCP pipes pre-stressed carbon fiber reinforcing structure
Design.
Background technology
Prestressed concrete cylinder pipe (Prestressed Concrete Cylinder Pipe, write a Chinese character in simplified form PCCP pipe) is
Refer to and ring orientation prestress steel wire is wound on the high-strength concrete tube core with steel cylinder, then the fine and close cement mortar of spray thereon is protected
Sheath and the water-supply-pipe that is made.It is the composite pipe being made up of sheet metal, high tensile steel wire and concrete, has comprehensively played steel
Tension, resistance to compression, the decay resistance of easily sealing and concrete, with high leakproofness, high intensity and impervious characteristic high, extensively
It is applied to interval water conveying tunnel long, pressure inverted-siphon, urban water supply engineering, industry pressure water conveyer pipeline, power plant cycle Hydraulic Projects
Sewer pipe, pressure blowdown main etc..Compared with conventional tubing, PCCP pipes have that the applied widely, economic life is long, shock resistance
Can be good, easy for installation, substantially water-tight the advantages of.It is more and more using the engineering of PCCP pipes in current China water diversion project.
But due to the reason such as design, Construction defect, operational management be improper, there are multiple engineerings at present and booster phenomenon occurred, sternly
The safe operation of aqueduct is threaten again.Most of booster is due to winding ring orientation prestress steel wire on high-strength concrete tube core
Occur caused by fracture of wire, in order to prevent trouble before it happens, the PCCP pipes to being tested with fracture of wire need to reinforce.
PCCP pipes reinforce can using displacement, increase outside section, steel bonding method, liner steel drum, paste outside carbon fiber and
The methods such as inner side sticking carbon fiber.These methods differ from one another, and have both advantages and disadvantages.Inner side sticking carbon fiber reinforces PCCP Manifold technologies
Carbon fibre material is pasted on by PCCP pipes inner side concrete surface by resinae cementing material, is reached by both collective effects
To reinforcement and strengthening, a kind of reinforcement technique of improvement structure tension performance.Compared with other reinforcement techniques, this technology is without large-scale
Construction equipment, easy construction, efficient, quality easily ensure.Carbon fibre material typically has good corrosion resistance and durability, piece
Material is lighter and thin, does not increase original structure deadweight substantially and does not reduce the cross-section of river of PCCP pipes.But substantial amounts of experimental study and work
Journey practice have shown that, it is current to reinforce PCCP Manifold technologies from inner side sticking carbon fiber and there are some inherent shortcomings, due to carbon fiber bullet
Property modulus is much lower with respect to its intensity, larger deformation is needed during Developed fiber strength, it is difficult to suppress the deformation of PCCP tubular constructions and split
The development of seam, causes with carbon cloth reinforced PCCP pipes DeGrain.Such as carbon fiber, in relatively low stress level, PCCP is managed
Crack or the fracture of outside compressor wire will occur in concrete, prevent the high intensity advantage of carbon fibre material from being had
Effect is played.These defects largely reduce the effect that carbon fiber is reinforced to PCCP pipes, increased reinforcing
Cost.
Utility model content
Be to improve the deficiencies in the prior art, propose a kind of reinforcing structure design, can under water under high pressure effect maximum journey
Degree reinforces PCCP pipes using the advantage of carbon fiber high-strength degree, and the utility model provides a kind of pre-stressed carbon fiber reinforcing
The structure design of PCCP pipes, located at PCCP inside pipe walls, the PCCP pipes pre-stressed carbon fiber reinforcing structure design includes：
Flexible barrier coating, located at PCCP pipes most inner side, for preventing from managing interior water penetration in carbon cloth and bed course；
Carbon fibre cloth layer, between flexible barrier coating and bed course, shares PCCP pipes and bears under internal water pressure effect
Tension；
Bed course, including spaced elastic insert and rigid mat, wherein,
Elastic insert is located between the concrete layer of PCCP inside pipe walls and carbon fibre cloth layer, for increasing carbon fibre cloth layer
Deflection；
Rigid mat is located between the concrete layer of PCCP inside pipe walls and carbon fibre cloth layer, with elastic insert in same layer,
Connection for strengthening carbon cloth and PCCP pipes；
Wherein, between 0-30cm, thickness is between 3-6mm for the width of foregoing rigid mat.
Wherein, between 20-50cm, thickness is between 3-6mm for the width of aforementioned flexible bed course.
Wherein, the thickness of aforementioned flexible bed course is equal to rigid mat.
Wherein, the material of foregoing rigid mat is epoxy putty or epoxy resin mortar.
Wherein, the material of aforementioned flexible bed course is compressible low-elasticity-modulus polyurathamc, the poly- ammonia of the low-elasticity-modulus foaming
The decrement of ester is more than 40%.
Wherein, foregoing carbon fibre cloth layer is set to 1-3 layers, by carbon fiber binding agent paste elastic insert after hardening and
On rigid mat.
Wherein, the material of foregoing carbon fiber binding agent is epoxy resin.
Wherein, the thickness of foregoing soft protective coating is between 1 ~ 2mm.
Wherein, the material of foregoing soft protective coating is one-component polyureas.
The PCCP pipe pre-stressed carbon fiber reinforcing structure designs that the utility model is provided, by setting elastic insert,
On the basis of ensureing PCCP pipes without substantially deforming, the deflection of carbon fibre cloth layer is increased, so as to increased carbon cloth
The tension that layer can bear, and then the stress for being distributed to PCCP pipes is reduced, effectively prevent PCCP pipe concretes and occur splitting
Seam or compressor wire fracture, make carbon fibre material high intensity advantage be effectively played, farthest increased carbon fine
Tie up the reinforcing effect to PCCP pipes.
Brief description of the drawings
Fig. 1：PCCP pipe pre-stressed carbon fiber reinforcing structure design schematic diagrames according to the utility model embodiment.
Specific embodiment
Further understand to have to PCCP pipes pre-stressed carbon fiber reinforcing structure design of the present utility model,
Accompanying drawing is coordinated to describe the effect of structure design of the present utility model and its generation in detail below.
Fig. 1 is the PCCP pipe pre-stressed carbon fiber reinforcing structure design schematic diagrames of the utility model one embodiment,
As shown in figure 1, the utility model provides a kind of PCCP pipes pre-stressed carbon fiber reinforcing structure, it is arranged in PCCP pipes,
Include successively from inboard to outside：Flexible protective coating 1, carbon fibre cloth layer 2 and bed course, the bed course include elastic insert 31
With rigid mat 32.
During specific implementation, the flexible protective coating 1 can also be omitted selectively, and make only to include in the PCCP pipes of preparation
Carbon fibre cloth layer 2, elastic insert 31+ rigid mats 32 and steel cylinder concrete layer 4 from inboard to outside, but in flexible protective
In the presence of coating 1, carbon fiber can be prevented effectively from while its high-strength characteristic is played, because carbon fibre cloth layer 2 is stretched
Rate long is larger, deform larger and possible caused surface there is the situation of microcrack, such that it is able to effectively solve to make in water under high pressure
With the problem of lower PCCP pipes inside pre-stressed carbon fiber antiseepage.
In the utility model, by setting bed course between carbon fibre cloth layer 2 and steel cylinder concrete layer 4, bed course includes bullet
Property bed course 31 and rigid mat 32, the change of carbon fibre cloth layer 2 can be increased on the basis of ensureing PCCP pipes without substantially deforming
Shape amount, answering for steel cylinder concrete layer 4 is distributed to so as to increased the tension that carbon fibre cloth layer 2 can bear, and then reduce
Power, while avoiding PCCP pipe concretes crack or compressor wire fracture occurs, obtains the high intensity advantage of carbon fibre material
To effectively performance, consolidation effect of the carbon fiber to PCCP pipes is farthest increased.Its particular technique principle is in interior hydraulic pressure
Under power effect, the compressive deformation of elastic insert 31 causes the tension of carbon fibre cloth layer 2 on its surface, i.e., equivalent to carbon fibre cloth layer 2
Pre-tensile stress, carbon fibre cloth layer 2 are applied with because being in tension state, certain deformation is there has been, a part can be first undertaken
Internal water pressure, then internal water pressure is born together with the steel cylinder concrete layer 4 on periphery, therefore carbon fiber high tensile can be given full play to
The characteristics of intensity.
During specific implementation, as shown in figure 1, elastic insert 31 and the interval setting of rigid mat 32, wherein, elastic insert 31
Decrement is far longer than rigid mat 32 so that elastic insert 31 that the carbon fibre cloth layer 2 on its surface can be driven to produce is larger
Deformation so that carbon fibre cloth layer 2 bears larger tension, and what the carbon fibre cloth layer 2 on the surface of rigid mat 32 was produced
Deformation is smaller, therefore in real process, can be adjusted by adjusting the thickness and width of elastic insert 31 and rigid mat 32
The prestretching degree of whole carbon fibre cloth layer 2.
The width of the elastic insert 32 is situated between 20-50cm, thickness between 3-6mm, the width of the rigid mat 31
In 0-30cm, thickness is identical with the thickness of elastic insert.
Certainly, in the case where elastic insert 31 and carbon fiber strong bond is ensured, it is also possible to omit rigid mat 32
Set, and whole bed course is set to elastic insert 31.
During specific implementation, the material of the rigid mat 32 can be set to epoxy putty or epoxy resin mortar；The elastic insert
31 material can be set to compressible low-elasticity-modulus polyurathamc, it is of course also possible to other materials are set to, as long as can be effectively increased
The deflection of carbon fibre cloth layer 2, at the same with PCCP pipe strong bonds.
In the utility model, the carbon fibre cloth layer 2 is preferably set to 1-3 layers, by carbon fiber binding agent（It is not shown）It is glutinous
On patch bed course after hardening.
In the utility model, the material of the carbon fiber binding agent is preferably epoxy resin.
In the utility model, between 1-2mm, material is preferably one-component polyureas to the thickness of the flexible protective coating 1.
The PCCP pipe pre-stressed carbon fiber reinforcing structures that the utility model is provided, mainly operate shape as follows
Into：
（1）According to the size of PCCP pipe diameters, the steel cylinder concrete 4 inner surface brushing rigid mat of layer in PCCP pipes
32, PCCP pipes inner side is divided into some areas；
（2）The elastic insert 31 of brushing stack pile between each rigid mat 32；
（3）After the solidification of elastic insert 31, in its external coating carbon fiber binding agent, pre-stressed carbon fiber is pasted in layering
Cloth, forms multi-storey up-down and translation layer 2；
（4）After the solidification of carbon fiber binding agent, in the external coating flexible protective of carbon fibre cloth layer 2 layer 1, wherein, flexible protective
The thickness of layer 1 is between 1.5-2mm.
In this way, being just made the PCCP pipes including rigid mat 32 and elastic insert 31, certainly, needing to omit rigid pad
In the case of layer 32, it is also possible to omit step（1）, and directly in the steel cylinder concrete 4 inner surface brushing cushion of layer of PCCP pipes
Layer 31.
To sum up, the PCCP pre-stressed carbon fiber reinforcing structures that the utility model is provided, have the following advantages that：
（1）By setting elastic insert, on the basis of ensureing PCCP pipes without substantially deforming, carbon fibre cloth layer is increased
Deflection, so as to increased the stress that carbon fibre cloth layer can bear, and then reduce be distributed to steel cylinder concrete layer should
Power, while avoiding PCCP pipe concretes crack or compressor wire fracture occurs, obtains the high intensity advantage of carbon fibre material
To effectively performance, consolidation effect of the carbon fiber to PCCP pipes is farthest increased.It is to increase carbon to set rigid mat
The globality of fibrage and PCCP pipes.
（2）By interval setting rigid mat and elastic insert, the prestretching of carbon fibre cloth layer according to actual needs, can be adjusted
Degree, so that the utility model can apply to various occasions.
（3）By setting flexible protective coating, can be prevented effectively from carbon fiber play its high-strength characteristic while, due to
Carbon fibre cloth layer elongation is larger, deform larger and possible caused surface there is the situation of microcrack, such that it is able to effectively solution
The problem of PCCP pipe pre-stressed carbon fiber antiseepages certainly under water under high pressure effect.
Although the utility model is illustrated using above-mentioned preferred embodiment, so it is not limited to the utility model
Protection domain, any those skilled in the art are not being departed within spirit and scope of the present utility model, relatively above-mentioned implementation
Example carries out various variations and still belongs to the scope that the utility model is protected, therefore protection domain of the present utility model with right with modification
What claim was defined is defined.
Claims (9)
1. a kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design, located at PCCP inside pipe walls, it is characterised in that described
PCCP pipe pre-stressed carbon fiber reinforcing structure designs include：
Flexible barrier coating, located at PCCP pipes most inner side, for preventing from managing interior water penetration in carbon cloth and bed course；
Carbon fibre cloth layer, between flexible barrier coating and bed course, the drawing that PCCP pipes bear is shared under internal water pressure effect
Stress；
Bed course, including spaced elastic insert and rigid mat, wherein,
Elastic insert is located between the concrete layer of PCCP inside pipe walls and carbon fibre cloth layer, the deformation for increasing carbon fibre cloth layer
Amount；
Rigid mat, with elastic insert in same layer, is used between the concrete layer and carbon fibre cloth layer of PCCP inside pipe walls
Strengthen the connection of carbon cloth and PCCP pipes.
2. PCCP pipes pre-stressed carbon fiber reinforcing structure design as claimed in claim 1, it is characterised in that the elasticity
, between 20-50cm, thickness is between 3-6mm for the width of bed course.
3. PCCP pipes pre-stressed carbon fiber reinforcing structure design as claimed in claim 1, it is characterised in that the rigidity
, between 0-30cm, thickness is between 3-6mm for the width of bed course.
4. PCCP pipes pre-stressed carbon fiber reinforcing structure design as claimed in claim 1, it is characterised in that the elasticity
Cushion thickness is equal to the thickness of rigid mat.
5. PCCP pipe pre-stressed carbon fiber reinforcing structure designs as any one of claim 1-4, its feature exists
In the material of the elastic insert is compressible low-elasticity-modulus polyurathamc, the decrement of the low-elasticity-modulus polyurathamc
More than 40%.
6. PCCP pipe pre-stressed carbon fiber reinforcing structure designs as any one of claim 1-4, its feature exists
In the material of the rigid mat is epoxy putty or epoxy resin mortar.
7. PCCP pipes pre-stressed carbon fiber reinforcing structure design as claimed in claim 1, it is characterised in that the carbon is fine
Dimension layer of cloth is set to 1 ~ 3 layer, is pasted on elastic insert and rigid mat after hardening by carbon fiber binding agent.
8. PCCP pipes pre-stressed carbon fiber reinforcing structure design as claimed in claim 7, it is characterised in that the carbon is fine
The material for tieing up binding agent is epoxy resin.
9. PCCP pipes pre-stressed carbon fiber reinforcing structure design as claimed in claim 1, it is characterised in that flexible protective
Between 1 ~ 2mm, the material of the flexible protective coating is one-component polyureas to the thickness of coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621109911.9U CN206234492U (en) | 2016-10-10 | 2016-10-10 | A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621109911.9U CN206234492U (en) | 2016-10-10 | 2016-10-10 | A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design |
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| CN206234492U true CN206234492U (en) | 2017-06-09 |
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| CN201621109911.9U Expired - Fee Related CN206234492U (en) | 2016-10-10 | 2016-10-10 | A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352165A (en) * | 2016-10-10 | 2017-01-25 | 北京中水科海利工程技术有限公司 | Prestressed carbon fiber reinforced structure design of prestressed concrete cylinder pipe (PCCP) |
-
2016
- 2016-10-10 CN CN201621109911.9U patent/CN206234492U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352165A (en) * | 2016-10-10 | 2017-01-25 | 北京中水科海利工程技术有限公司 | Prestressed carbon fiber reinforced structure design of prestressed concrete cylinder pipe (PCCP) |
| CN106352165B (en) * | 2016-10-10 | 2018-08-31 | 北京中水科海利工程技术有限公司 | A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20181010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |