CN110408940A - CFRP- steel concrete combined member cathode protection device and preparation method thereof - Google Patents
CFRP- steel concrete combined member cathode protection device and preparation method thereof Download PDFInfo
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- CN110408940A CN110408940A CN201910862805.XA CN201910862805A CN110408940A CN 110408940 A CN110408940 A CN 110408940A CN 201910862805 A CN201910862805 A CN 201910862805A CN 110408940 A CN110408940 A CN 110408940A
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- cfrp
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/10—Electrodes characterised by the structure
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2201/00—Type of materials to be protected by cathodic protection
- C23F2201/02—Concrete, e.g. reinforced
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention discloses a kind of CFRP- steel concrete combined member cathode protection device and preparation method thereof, is related to protecting reinforced concrete cathode technical field, specifically includes that CFRP pipe, concrete, steel and power supply；The steel are set in the CFRP pipe；The concrete is cast in the gap between the steel and the CFRP pipe；The steel are electrically connected with the cathode of the power supply, and the CFRP pipe is electrically connected with the anode of the power supply；When detecting that the steel start corrosion, opens the power supply and carry out cathodic protection.CFRP- steel concrete combined member cathode protection device disclosed by the invention and preparation method thereof, can be such that the electric fields uniform of total is distributed, improve the endurance quality of total.
Description
Technical field
The present invention relates to protecting reinforced concrete cathode technical fields, combine more particularly to a kind of CFRP- steel concrete
Component cathode protection device and preparation method thereof.
Background technique
The present most common cathode protecting process is with carbon fibre reinforced composite (Carbon Fiber
Reinforced Polymer/Plastic, CFRP) cathode protection device of the muscle as anode is indulged, consisting of: anode is
CFRP indulges muscle, and cathode is regular reinforcement, applies electric current by additional power source, and CFRP is made to indulge muscle connection positive pole, reinforcing bar connection
Power cathode.This structure protects reinforcing bar not corroded using cathode protecting process, improves the utilization rate of material, Er Qiechong
Distribution has waved CFRP and has indulged the corrosion-resistant of muscle, and consumption rate is low and endurance quality with long service life and enough mechanical strengths, can
By mechanical properties such as property height, the long-term behaviour of beam is substantially increased.
Another cathode protecting process is the cathodic protection dress for serving as anode cathode with CFRP- steel composite reinforcing and carrying out self-shield
It sets.For single CFRP- steel composite reinforcing, anode of the protective layer as cathodic protection circuit outside composite reinforcing, composite reinforcing
The internal regular reinforcement as muscle material inner core serves as cathode in cathodic protection circuit, by the anode electricity of protective layer and DC power supply
Connection, regular reinforcement inner core are electrically connected with the cathode of DC power supply, form cathodic protection circuit.For with CFRP- steel composite reinforcing
As the reinforced concrete structure of principal rod, the protective layer of CFRP- steel composite reinforcing in reinforced concrete structure is electrically connected,
As the anode system of cathodic protection circuit, the regular reinforcement in CFRP- steel composite reinforcing as inner core is electrically connected, as yin
The cathod system of polar circuit carries out self-shield to CFRP- steel composite reinforcing.This method is easy for construction, greatly reduces construction volume,
And one muscle it is multi-purpose, improve the utilization rate of material, electric energy in use expends less, has apparent economic benefit.
The above technology is most important the disadvantage is that CFRP tendons are alternately arranged with reinforcing bar, and total electric field influences each other, and causes
Electric field can not be uniformly distributed, and durability will appear difference, to influence total.Meanwhile because of reinforced concrete structure,
It is exactly rod structure, is a kind of for measuring body structure, it needs to bear end to its load, if rod structure design is improper,
Carrying Capacity will occur, to influence structure durability energy.And CFRP tendons are that a kind of tensile strength is high, but compression strength is low
Muscle material, be the significant wastage to material for rod structure, and the characteristics such as bearing capacity that can seriously affect rod structure.Therefore, with
The property such as ductility and the bearing capacity that upper existing cathode protecting process is difficult to apply in rod structure, and not can guarantee concrete
Energy.
Summary of the invention
The object of the present invention is to provide a kind of CFRP- steel concrete combined member cathode protection device and preparation method thereof,
The electric fields uniform of total can be made to be distributed, improve the endurance quality of total.
To achieve the above object, the present invention provides following schemes:
A kind of CFRP- steel concrete combined member cathode protection device, including CFRP pipe, concrete, steel and power supply；
The steel are set in the CFRP pipe；
The concrete is cast in the gap between the steel and the CFRP pipe；
The steel are electrically connected with the cathode of the power supply, and the CFRP pipe is electrically connected with the anode of the power supply；Pass through
The current potential for detecting the steel judges the corrosion situation of the steel, when detecting that the steel start corrosion, described in unlatching
Power supply carries out in due course cathodic protection.
Optionally, the CFRP pipe is that cross sectional shape is circular CFRP pipe or cross sectional shape is rectangular CFRP pipe.
Optionally, the steel be single cross sectional shape be circular steel pipe, multiple cross sectional shapes are circular steel pipe, list
A cross sectional shape is rectangular steel pipe, single I-steel, single channel steel, single cross sectional shape are circular solid steel tube, single
The combination steel or single cross sectional shape of I-steel and multiple reinforcing bars are the combination steel of circular solid steel tube and multiple reinforcing bars.
Optionally, when it is circular steel pipe that the steel, which are multiple cross sectional shapes, cross sectional shape described in each adjacent two
It is bonded together for the outer wall of circular steel pipe by the adhesives containing conductive particle, multiple cross sectional shapes are circle
Steel pipe bonding be an entirety.
Optionally, when the steel are the combination steel of single I-steel and multiple reinforcing bars, multiple reinforcing bars are in circle
Shape is uniformly distributed in around the single I-steel, and each reinforcing bar of same circle is at a distance from the CFRP pipe etc.
Together.
Optionally, when the steel are the combination steel that single cross sectional shape is circular solid steel tube and multiple reinforcing bars,
Multiple reinforcing bars are uniformly distributed in the cross sectional shape in circle shape, and same circle
Each reinforcing bar is equal at a distance from the CFRP pipe.
To achieve the above object, the present invention also provides following schemes:
A kind of preparation method of CFRP- steel concrete combined member cathode protection device, comprising:
CFRP pipe is made according to the desired size of CFRP pipe；
Steel are made according to the desired size of steel and anticipated number；
The steel are fixed on to the centre of the CFRP pipe；
It is poured concrete in gap between the steel and the CFRP pipe, and is vibrated；
The cathode of power supply is electrically connected with the steel, the anode of the power supply is electrically connected with the CFRP pipe.
Optionally, described that steel are made according to the desired size and anticipated number of steel, it specifically includes:
Precision Machining is carried out to steel using lathe, is fabricated to the steel of desired size and anticipated number；When the institute of production
It states steel to be multiple cross sectional shapes when being circular steel pipe, it will be described in each adjacent two by the adhesives containing conductive particle
Cross sectional shape is that the outer wall of circular steel pipe bonds together, and making the circular steel pipe bonding of multiple cross sectional shapes is one
It is whole.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
CFRP- steel concrete combined member cathode protection device disclosed by the invention and preparation method thereof, with outer ring CFRP
Pipe is applied by additional power source and is protected as cathode as anode, internal steel, and the current potential by detecting steel judges steel
Situation is corroded, when detecting that internal steel start corrosion, power supply is opened and carries out in due course cathodic protection, such CFRP pipe can be with
Its unique mechanical advantage is given full play to, since the fiber winding direction of CFRP pipe is circumferential or close circumferential direction, can effectively be limited
Lateral expansion when CFRP- steel concrete combined member bearing load constrains to provide and its shear-carrying capacity can be improved.Together
When, CFRP pipe can be completely homogeneously arranged among CFRP- steel concrete combined member using the characteristics of outer ring, due to anode and cathode
Each relative position is completely the same, and there is no electric field cross influences brought by many anode cathodes for such structure, therefore entirely
The electric field of structure is uniformly distributed enough, improves the endurance quality of total and the stability of circuit.
In addition, CFRP pipe of the invention can be as CFRP- steel concrete combined member reinforcing material but also as anode
Material, a material are multi-purpose, improve stock utilization, protect internal steel from corrosion, at the same substantially increase bearing capacity and
Concrete ductility.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is one CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Fig. 2 is one CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Fig. 3 is two CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Fig. 4 is two CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Fig. 5 is three CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Fig. 6 is three CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Fig. 7 is four CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Fig. 8 is four CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Fig. 9 is five CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Figure 10 is five CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Figure 11 is six CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Figure 12 is six CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Figure 13 is seven CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Figure 14 is seven CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Figure 15 is eight CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Figure 16 is eight CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Figure 17 is nine CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention；
Figure 18 is nine CFRP- steel concrete combined member cathode protection device sectional view of the embodiment of the present invention；
Figure 19 is the process of the preparation method embodiment of CFRP- steel concrete combined member cathode protection device of the present invention
Figure；
Figure 20 is the present most common cathode protecting process schematic diagram；
Figure 21 is the now most common another cathode protecting process schematic diagram.
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 carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of CFRP- steel concrete combined member cathode protection device and preparation method thereof,
The electric fields uniform of total can be made to be distributed, improve the endurance quality of total.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention will be further described in detail.
Embodiment one
Fig. 1 is one CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Fig. 2 is this hair
Bright one CFRP- steel concrete combined member cathode protection device sectional view of embodiment.Referring to Fig. 1 and Fig. 2, the CFRP- steel reinforced concrete is solidifying
Native combined member cathode protection device is a kind of cathode protection device of single tube hollow cylinder structure comprising cross sectional shape is circle
CFRP pipe 101, concrete 102, the single cross sectional shape of shape are circular steel pipe 103 and power supply 104.
Single cross sectional shape is that be set to cross sectional shape be in circular CFRP pipe 101 to circular steel pipe 103.
Concrete 102 is cast in that single cross sectional shape is circular steel pipe 103 and cross sectional shape is circular CFRP pipe 101
Between gap in.
Single cross sectional shape is that circular steel pipe 103 is electrically connected with the cathode of power supply 104, and cross sectional shape is circular CFRP
Pipe 101 is electrically connected with the anode of power supply 104；Cross sectional shape is judged by the current potential that detection sectional plane shape is circular steel pipe 103
Power supply is opened when detecting cross sectional shape is that circular steel pipe 103 starts corrosion for the corrosion situation of circular steel pipe 103
104 carry out in due course cathodic protection.
Embodiment two
Fig. 3 is two CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Fig. 4 is this hair
Bright two CFRP- steel concrete combined member cathode protection device sectional view of embodiment.Referring to Fig. 3 and Fig. 4, the CFRP- steel reinforced concrete is solidifying
Native combined member cathode protection device is a kind of cathode protection device of multitube hollow cylinder structure comprising cross sectional shape is circle
CFRP pipe 101, concrete 102, the multiple cross sectional shapes of shape are circular steel pipe 103 and power supply 104.
Each adjacent two cross sectional shape is that the outer wall of circular steel pipe 103 is bonded together by adhesives, multiple sections
Face shape is that the circular bonding of steel pipe 103 is an entirety.Wherein, adhesives is the adhesives containing conductive particle.
Multiple cross sectional shapes are that be set to cross sectional shape be in circular CFRP pipe 101 to circular steel pipe 103.
It is circular steel pipe 103 with cross sectional shape is that circular CFRP is managed that the concrete, which is cast in multiple cross sectional shapes,
In gap between 101.
It by one of cross sectional shape is circular steel pipe 103 and power supply that multiple cross sectional shapes, which are circular steel pipe 103,
104 cathode electrical connection, cross sectional shape are that circular CFRP pipe 101 is electrically connected with the anode of power supply 104；Pass through detection sectional plane shape
Shape is that the current potential of circular steel pipe 103 judges that cross sectional shape is the corrosion situation of circular steel pipe 103, when detecting cross sectional shape
When starting corrosion for circular steel pipe 103, opens power supply 104 and carry out in due course cathodic protection.
Embodiment three
Fig. 5 is three CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Fig. 6 is this hair
Bright three CFRP- steel concrete combined member cathode protection device sectional view of embodiment.Referring to figs. 5 and 6, the CFRP- steel reinforced concrete is solidifying
Native combined member cathode protection device is a kind of cathode protection device of square tube hollow cylinder structure comprising cross sectional shape is circle
CFRP pipe 101, concrete 102, the single cross sectional shape of shape are rectangular steel pipe 203 and power supply 104.
Single cross sectional shape is that be set to cross sectional shape be in circular CFRP pipe 101 to rectangular steel pipe 203.
Concrete 102 is cast in that single cross sectional shape is rectangular steel pipe 203 and cross sectional shape is circular CFRP pipe 101
Between gap in.
Single cross sectional shape is that rectangular steel pipe 203 is electrically connected with the cathode of power supply 104, and cross sectional shape is circular CFRP
Pipe 101 is electrically connected with the anode of power supply 104；Cross sectional shape is judged by the current potential that detection sectional plane shape is rectangular steel pipe 203
Power supply is opened when detecting cross sectional shape is that rectangular steel pipe 203 starts corrosion for the corrosion situation of rectangular steel pipe 203
104 carry out in due course cathodic protection.
Example IV
Fig. 7 is four CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Fig. 8 is this hair
Bright example IV CFRP- steel concrete combined member cathode protection device sectional view.Referring to figs. 7 and 8, the CFRP- steel reinforced concrete is solidifying
Native combined member cathode protection device is a kind of cathode protection device of i shaped steel cylindrical structure comprising cross sectional shape is circle
CFRP pipe 101, concrete 102, single I-steel 303 and the power supply 104 of shape.
It is in circular CFRP pipe 101 that single I-steel 303, which is set to cross sectional shape,.
Concrete 102 is cast in single I-steel 303 and cross sectional shape in the gap between circular CFRP pipe 101.
Single I-steel 303 is electrically connected with the cathode of power supply 104, and cross sectional shape is circular CFRP pipe 101 and power supply 104
Anode electrical connection；Current potential by detecting I-steel 303 judges the corrosion situation of I-steel 303, when detecting I-steel 303
When starting corrosion, opens power supply 104 and carry out in due course cathodic protection.
Embodiment five
Fig. 9 is five CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Figure 10 is this hair
Bright five CFRP- steel concrete combined member cathode protection device sectional view of embodiment.Referring to Fig. 9 and Figure 10, the CFRP- steel reinforced concrete is solidifying
Native combined member cathode protection device is a kind of cathode protection device of channel steel cylindrical structure comprising cross sectional shape is circular
CFRP pipe 101, concrete 102, single channel steel 403 and power supply 104.
It is in circular CFRP pipe 101 that single channel steel 403, which is set to cross sectional shape,.
Concrete 102 is cast in single channel steel 403 and cross sectional shape in the gap between circular CFRP pipe 101.
Single channel steel 403 is electrically connected with the cathode of power supply 104, and cross sectional shape is circular CFRP pipe 101 and power supply 104
Anode electrical connection；Current potential by detecting channel steel 403 judges the corrosion situation of channel steel 403, when detecting that channel steel 403 starts to corrode
When, it opens power supply 104 and carries out in due course cathodic protection.
Embodiment six
Figure 11 is six CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Figure 12 is this
Six CFRP- steel concrete combined member cathode protection device sectional view of inventive embodiments.Referring to Figure 11 and Figure 12, the CFRP- steel
Concrete combined component cathode protection device is a kind of cathode protection device of single tube solid cylinder structure comprising cross sectional shape
It is circular solid steel tube 503 and power supply 104 for circular CFRP pipe 101, concrete 102, single cross sectional shape.
Single cross sectional shape is that be set to cross sectional shape be in circular CFRP pipe 101 to circular solid steel tube 503.
Concrete 102 is cast in that single cross sectional shape is circular solid steel tube 503 and cross sectional shape is circular CFRP
In gap between pipe 101.
Single cross sectional shape is that circular solid steel tube 503 is electrically connected with the cathode of power supply 104, and cross sectional shape is circular
CFRP pipe 101 is electrically connected with the anode of power supply 104；Judged by the current potential that detection sectional plane shape is circular solid steel tube 503
Cross sectional shape be circular solid steel tube 503 corrosion situation, when detect cross sectional shape be circular solid steel tube 503 start
When corrosion, opens power supply 104 and carry out in due course cathodic protection.
Embodiment seven
Figure 13 is seven CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Figure 14 is this
Seven CFRP- steel concrete combined member cathode protection device sectional view of inventive embodiments.Referring to Figure 13 and Figure 14, the CFRP- steel
Concrete combined component cathode protection device is a kind of fashioned iron-reinforcing bar combination cylinder structure cathode protection device comprising is cut
Face shape is the combination steel and power supply of circular CFRP pipe 101, concrete 102, single I-steel 303 and multiple reinforcing bars 603
104。
It is in circular CFRP pipe 101 that the combination steel of single I-steel 303 and multiple reinforcing bars 603, which is set to cross sectional shape,.
Concrete 102 is cast in the combination steel of single I-steel 303 and multiple reinforcing bars 603 and cross sectional shape is circular
In gap between CFRP pipe 101.
The combination steel of single I-steel 303 and multiple reinforcing bars 603 passes through I-steel 303 and every reinforcing bar 603 and power supply 104
Cathode electrical connection, cross sectional shape is that the positive of circular CFRP pipe 101 and power supply 104 is electrically connected；By detecting I-steel 303
Or the current potential of reinforcing bar 603 judges the corrosion situation of I-steel 303 or reinforcing bar 603, when detecting that I-steel 303 or reinforcing bar 603 open
When beginning to corrode, opens power supply 104 and carry out in due course cathodic protection.
Embodiment eight
Figure 15 is eight CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Figure 16 is this
Eight CFRP- steel concrete combined member cathode protection device sectional view of inventive embodiments.Referring to Figure 15 and Figure 16, the CFRP- steel
Concrete combined component cathode protection device is a kind of cathode protection device of the pipe-reinforced combination cylinder structure of steel comprising is cut
Face shape is circular CFRP pipe 101, concrete 102, single cross sectional shape are circular solid steel tube 503 and multiple reinforcing bars
603 combination steel and power supply 104.
Single cross sectional shape is that the combination steel of circular solid steel tube 503 and multiple reinforcing bars 603 is set to cross sectional shape and is
In circular CFRP pipe 101.
Concrete 102 be cast in combination steel that single cross sectional shape is circular solid steel tube 503 and multiple reinforcing bars 603 with
Cross sectional shape is in the gap between circular CFRP pipe 101.
Single cross sectional shape is that the combination steel of circular solid steel tube 503 and multiple reinforcing bars 603 by cross sectional shape is round
The solid steel tube 503 and each reinforcing bar 603 of shape are electrically connected with the cathode of power supply 104, cross sectional shape be circular CFRP pipe 101 with
The anode electrical connection of power supply 104；It is the current potential judgement section of circular solid steel tube 503 or reinforcing bar 603 by detection sectional plane shape
Face shape is the corrosion situation of circular solid steel tube 503 or reinforcing bar 603, when detecting that cross sectional shape is circular solid steel tube
503 or reinforcing bar 603 start corrosion when, open power supply 104 carry out in due course cathodic protection.
Embodiment nine
Figure 17 is nine CFRP- steel concrete combined member cathode protection device side view of the embodiment of the present invention.Figure 18 is this
Nine CFRP- steel concrete combined member cathode protection device sectional view of inventive embodiments.Referring to Figure 17 and Figure 18, the CFRP- steel
Concrete combined component cathode protection device is a kind of cathode protection device of single tube hollow square column structure comprising cross sectional shape
It is circular steel pipe 103 and power supply 104 for rectangular CFRP pipe 201, concrete 102, single cross sectional shape.
Single cross sectional shape is that be set to cross sectional shape be in rectangular CFRP pipe 201 to circular steel pipe 103.
Concrete 102 is cast in that single cross sectional shape is circular steel pipe 103 and cross sectional shape is rectangular CFRP pipe 201
Between gap in.
Single cross sectional shape is that circular steel pipe 103 is electrically connected with the cathode of power supply 104, and cross sectional shape is rectangular CFRP
Pipe 201 is electrically connected with the anode of power supply 104；Cross sectional shape is judged by the current potential that detection sectional plane shape is circular steel pipe 103
Power supply is opened when detecting cross sectional shape is that circular steel pipe 103 starts corrosion for the corrosion situation of circular steel pipe 103
104 carry out in due course cathodic protection.
CFRP- steel concrete combined member cathode protection device application range disclosed by the invention is very extensive, Ke Yiying
The CFRP- steel combined member of diversified forms is used, every kind of CFRP- steel concrete combined member includes concrete and is embedded in coagulation
Steel and the combination of outer ring CFRP pipe in soil.Between outer ring CFRP pipe and internal steel is concrete medium, internal steel
Material connects the cathode of DC power supply as cathode, and outer ring CFRP pipe connects the anode of DC power supply as anode.Such CFRP- steel
There is no electric field cross influence brought by many anode cathodes, the electric fields of total uniformly to divide enough for concrete combined component
Cloth, even multipipe structure, entire electric field still can be regarded as it is same because each relative position of anode and cathode is completely the same, because
This equally distributed electric field overcomes the endurance issues of structure.The CFRP pipe being electrically connected with DC power anode fills in circuit
Work as anode system, steel is protected not corroded, achievees the effect that cathodic protection.CFRP pipe passes through electrically conductive binding material and knot
Structure (steel-concrete composite) is combined into an entirety, greatly improves the ductility of concrete, to ensure that the anti-of rod structure
Cut bearing capacity and rigidity.CFRP pipe needs additional increased anode material instead of application cathodic protection, and a material is multi-purpose, reduces material
The usage amount of material, reduces engineering cost.CFRP pipe is evenly distributed in structure, therefore the electric field of entire circuit is more evenly,
Cathodic protection effect is more reliable.The advantages of invention applies outer ring CFRP pipes, i.e., CFRP pipe is entwined using CFRP fiber,
And CFRP material has excellent tensile property, this performance enables CFRP pipe to wale rod structure in rod structure bearing load
Concrete, while crack developing can be delayed when concrete starts broken, it ensure that the ductility of concrete, can significantly improve
The bearing capacity and endurance quality of rod structure.It is mixed that this cathode protection device of the invention can be used for the newly-built reinforcing bar in erosion environment
Xtah Crude Clay structure is directly installed in structure during concreting element precast, the comparison side such as anode and cathode arrangement, wiring
Just, it is not necessarily to secondary operation, has many advantages, such as construct flexibility and better mechanical property.
In addition, CFRP- steel concrete combined member cathode protection device disclosed by the invention, has in due course cathodic protection function
Energy.Its whole combined member can the cathodic protection of open and close in due course be then turned on cathode guarantor when detecting that steel start corrosion
Shield prevents the method for corrosion from being controlled by artificial subjective initiative in this way, and whole system can be more flexible, while also can be energy saving.
Cathodic protection is closed only to need to close external power supply.The method that detection steel start corrosion can be examined using reference electrode
Survey the current potential identification of steel.
Embodiment ten
Figure 19 is the process of the preparation method embodiment of CFRP- steel concrete combined member cathode protection device of the present invention
Figure.Preparation method referring to Figure 19, the CFRP- steel concrete combined member cathode protection device includes:
Step 1901: CFRP pipe is made according to the desired size of CFRP pipe.
CFRP pipe is prefabrication, makes CFRP pipe according to the desired size of CFRP pipe.CFRP pipe is to cut on CFRP pipe
Face shape is circular CFRP pipe or cross sectional shape is rectangular CFRP pipe.
Step 1902: steel are made according to the desired size of steel and anticipated number.
Steel be single cross sectional shape be circular steel pipe, multiple cross sectional shapes are circular steel pipe, single cross sectional shape
It is circular solid steel tube, single I-steel and more for rectangular steel pipe, single I-steel, single channel steel, single cross sectional shape
The combination steel of a reinforcing bar or single cross sectional shape are the combination steel of circular solid steel tube and multiple reinforcing bars.
Precision Machining is carried out to steel using lathe, is fabricated to the steel of desired size and anticipated number.
When it is circular steel pipe that the steel of production, which are single cross sectional shape, an aperture is dug out on the steel pipe,
Extraction wire.
When it is circular steel pipe that the steel of production, which are multiple cross sectional shapes, pass through the bonding material containing conductive particle
Material bonds together the outer wall that cross sectional shape described in each adjacent two is circular steel pipe, makes multiple cross sectional shape circles
The steel pipe bonding of shape is an entirety.An aperture is dug out on the whole at this, i.e., a cross sectional shape is circular wherein
An aperture, then extraction wire are dug out on steel pipe.
When it is rectangular steel pipe that the steel of production, which are single cross sectional shape, an aperture is dug out on the steel pipe,
Extraction wire.
When the steel of production are single I-steel, an aperture, extraction wire are dug out on the I-steel.
When the steel of production are single channel steel, an aperture, extraction wire are dug out on the channel steel.
When it is circular solid steel tube that the steel of production, which are single cross sectional shape, one is dug out in the solid steel tube
A aperture, extraction wire.
When the steel of production are the combination steel of single I-steel and multiple reinforcing bars, multiple reinforcing bars are in circle shape
It is uniformly distributed in around the single I-steel, and each reinforcing bar of same circle and cross sectional shape are circular CFRP pipe
Distance it is equivalent.An aperture is dug out on the I-steel, extraction wire digs out an aperture on each reinforcing bar, draws
Corresponding conducting wire.
It is more when the steel of production are the combination steel that single cross sectional shape is circular solid steel tube and multiple reinforcing bars
It is around circular solid steel tube that a reinforcing bar, which is uniformly distributed in the cross sectional shape in circle shape, and same circle is each
The reinforcing bar is to be equal at a distance from circular CFRP pipe with cross sectional shape.An aperture is dug out in the solid steel tube, extraction is led
Line digs out an aperture on each reinforcing bar, draws corresponding conducting wire.
Step 1903: the steel are fixed on to the centre of the CFRP pipe.
Step 1904: being poured concrete in the gap between the steel and the CFRP pipe, and vibrate.
So far, CFRP- steel concrete combined member production finishes, and the conducting wire of steel and CFRP pipe has also extracted, and leads to
Crossing conducting wire can be electrically connected CFRP- steel concrete combined member institute using outer ring CFRP pipe with DC power anode, interior
The cathode of portion's steel and DC power supply is electrically connected.
Step 1905: the cathode of power supply being electrically connected with the steel, by the anode of the power supply and the CFRP pipe electricity
Connection.
In nature, fe plays pendulum, the oxide for the iron that oriented energy is lower, form is more stable
The tendency of transformation, the oxidation reaction of steel is the process of a release electronics, if steel are in cathodic polarization state, steel
Electronics it is extremely abundant, electronics can not be lost, also can not just generate oxidation reaction.After energization, the inside steel as cathode are sent out
Raw reduction reaction: 2H++2e→H2, as anode outer ring CFRP pipe occur oxidation reaction: 2H2O→O2+4H++ 4e and 2Cl—→
Cl2+2e.Charge electronics flows to internal steel cathode electrode by conducting wire by DC power supply, makes steel cathodic polarization, inhibits steel
Oxidation reaction.CFRP- steel concrete combined member cathode protection device disclosed by the invention can make steel cathodic polarization, and
When steel are in cathodic polarization state, steel are nearby a large amount of electronegative electronics, and since identical charges repel each other for charge, it is former that there is a natural attraction between the sexes
Reason, chloride ion can be migrated away from the direction of steel, so that the passivating film of steel can not be destroyed, such steel would not be rotten
Erosion.Therefore CFRP- steel concrete combined member cathode protection device disclosed by the invention can be realized under electric field action, chlorine from
Son is mobile away from the direction of regular reinforcement (steel), the chlorine ion concentration around regular reinforcement is reduced, thus to common
Reinforcing bar provides protective effect.
Figure 20 is the present most common cathode protecting process schematic diagram.Referring to fig. 20, the present most common cathodic protection side
Method is the cathode protection device that muscle is indulged using CFRP as anode, consisting of: anode is that CFRP indulges muscle 1, cathode is regular reinforcement
2, electric current is applied by additional power source, CFRP tendons is made to connect positive pole, reinforcing bar connects power cathode.
Figure 21 is the now most common another cathode protecting process schematic diagram.Referring to fig. 21, it is now most common another
Kind cathode protecting process is the cathode protection device for serving as anode cathode with CFRP- steel composite reinforcing and carrying out self-shield.For single
For CFRP- steel composite reinforcing, anode of the protective layer 3 as cathodic protection circuit outside composite reinforcing is used as muscle inside composite reinforcing
The regular reinforcement 4 of material inner core serves as cathode in cathodic protection circuit, and protective layer 3 is electrically connected with the anode of DC power supply, general
Logical 4 inner core of reinforcing bar is electrically connected with the cathode of DC power supply, forms cathodic protection circuit.For using CFRP- steel composite reinforcing as by
The protective layer 3 of CFRP- steel composite reinforcing in reinforced concrete structure 5 is electrically connected by the reinforced concrete structure 5 of power muscle, is made
For the anode system of cathodic protection circuit, the regular reinforcement 4 in CFRP- steel composite reinforcing as inner core is electrically connected, as yin
The cathod system of circuit is protected in pole, carries out self-shield to CFRP- steel composite reinforcing.
The above-mentioned most common cathode protecting process now, it is most important the disadvantage is that CFRP tendons are alternately arranged with reinforcing bar, it is whole
The uniformity of a structure electric field is inadequate.Meanwhile this technology is difficult to apply in rod structure, not can guarantee the ductility of concrete with
And the performances such as bearing capacity.
Compared with the above-mentioned most common cathode protecting process now, the present invention provides a kind of easy for construction, corrosion resistances
Cathode protection device and the method (yin for the composite structure that excellent, the concrete compression intensity of energy and structure ductility all greatly improve
Pole protection form), it has the advantages that
1.CFRP pipe not only as structural reinforcement material but also was used as anode material, and a material is multi-purpose, saves engineering material, reduced
The usage amount of material, reduces working procedure, reduces engineering cost.
2. having reached impressed current cathodic protection (Impressed Current Cathodic Protection, ICCP)
Effect, protect internal steel from corrosion.By external power supply, steel inside the CFRP protection of pipe of outer ring are enabled, ICCP is utilized
The particular advantages of system, fundamentally inhibit steel corrosion, ensure that the durability and long-term behaviour of structure.
3. whole combined member can the cathodic protection system of open and close in due course, when detecting that steel start corrosion, then
Cathodic protection is opened, prevents the method for corrosion from being controlled by artificial subjective initiative in this way, whole system can be more flexible, while also can
It is energy saving.
4. having higher bearing capacity and rigidity, the development in crack after cracking can be effectively limited.Since concrete is born
Lateral expansion suffers restraints when load, so this composite structure, the i.e. ductility of CFRP- steel concrete combined member are very good,
Have better bearing capacity, further improves the long-term behaviour of structure.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand the device of the invention and its core concept；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of CFRP- steel concrete combined member cathode protection device, which is characterized in that including CFRP pipe, concrete, steel
And power supply；
The steel are set in the CFRP pipe；
The concrete is cast in the gap between the steel and the CFRP pipe；
The steel are electrically connected with the cathode of the power supply, and the CFRP pipe is electrically connected with the anode of the power supply；Pass through detection
The current potential of the steel judges the corrosion situation of the steel, when detecting that the steel start corrosion, opens the power supply
Carry out in due course cathodic protection.
2. CFRP- steel concrete combined member cathode protection device according to claim 1, which is characterized in that described
CFRP pipe is that cross sectional shape is circular CFRP pipe or cross sectional shape is rectangular CFRP pipe.
3. CFRP- steel concrete combined member cathode protection device according to claim 1, which is characterized in that the steel
Material be single cross sectional shape be circular steel pipe, multiple cross sectional shapes are circular steel pipe, single cross sectional shape is rectangular steel
Pipe, single I-steel, single channel steel, single cross sectional shape are circular solid steel tube, the group of single I-steel and multiple reinforcing bars
It closes steel or single cross sectional shape is the combination steel of circular solid steel tube and multiple reinforcing bars.
4. CFRP- steel concrete combined member cathode protection device according to claim 3, which is characterized in that when described
Steel are multiple cross sectional shapes when being circular steel pipe, and cross sectional shape described in each adjacent two is that the outer wall of circular steel pipe passes through
Adhesives containing conductive particle bonds together, and multiple cross sectional shapes are that circular steel pipe bonding is an entirety.
5. CFRP- steel concrete combined member cathode protection device according to claim 3, which is characterized in that when described
When steel are the combination steel of single I-steel and multiple reinforcing bars, multiple reinforcing bars are uniformly distributed in the single work in circle shape
Around word steel, and each reinforcing bar of same circle is equal at a distance from the CFRP pipe.
6. CFRP- steel concrete combined member cathode protection device according to claim 3, which is characterized in that when described
When steel are the combination steel that single cross sectional shape is circular solid steel tube and multiple reinforcing bars, multiple reinforcing bars are equal in circle shape
It is even to be distributed in the cross sectional shape and be around circular solid steel tube, and each reinforcing bar of same circle and the CFRP are managed
Distance it is equivalent.
7. a kind of applied to CFRP- steel concrete combined member cathode protection device of any of claims 1-6
Preparation method characterized by comprising
CFRP pipe is made according to the desired size of CFRP pipe；
Steel are made according to the desired size of steel and anticipated number；
The steel are fixed on to the centre of the CFRP pipe；
It is poured concrete in gap between the steel and the CFRP pipe, and is vibrated；
The cathode of power supply is electrically connected with the steel, the anode of the power supply is electrically connected with the CFRP pipe.
8. preparation method according to claim 7, which is characterized in that the desired size and anticipated number according to steel
Steel are made, are specifically included:
Precision Machining is carried out to steel using lathe, is fabricated to the steel of desired size and anticipated number；When the steel of production
Material is multiple cross sectional shapes when being circular steel pipe, by the adhesives containing conductive particle by section described in each adjacent two
Shape is that the outer wall of circular steel pipe bonds together, and making the circular steel pipe bonding of multiple cross sectional shapes is one whole
Body.
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