CN203256336U - Reinforcement device for cathodically protecting reinforced concrete structure - Google Patents
Reinforcement device for cathodically protecting reinforced concrete structure Download PDFInfo
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- CN203256336U CN203256336U CN 201320190990 CN201320190990U CN203256336U CN 203256336 U CN203256336 U CN 203256336U CN 201320190990 CN201320190990 CN 201320190990 CN 201320190990 U CN201320190990 U CN 201320190990U CN 203256336 U CN203256336 U CN 203256336U
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Abstract
The utility model discloses a reinforcement device for cathodically protecting a reinforced concrete structure. The reinforcement device for cathodically protecting the reinforced concrete structure comprises a carbon fiber reinforced polymer (CFRP) sheet and an external power supply, wherein the CFRP sheet is arranged on the surface of a reinforcement region of a reinforced concrete structure body; the external power supply is used for applying current with a constant size to a plurality of main reinforcements which are buried in the reinforced concrete structure body; the main reinforcements are electrically connected with one another; the external power supply is connected between the main reinforcements and the CFRP sheet. The CFRP sheet has double functions of a reinforcement material and an auxiliary anode; other additional anodes are not needed; a simple current-applying cathodic protection device without a control system and a detection system is adopted, so that the safety and the durability of the structure are improved, and the cost performance is remarkably improved.
Description
Technical field
The utility model relates to the structural strengthening field of Steel Concrete, relates in particular to for the bracing means that skeleton construction is carried out galvanic protection.
Background technology
Concrete weather resistance refers to that concrete resists the effect of various destructive factors under actual service conditions, keeps for a long time the ability of intensity and outward appearance integrity.
From the angle of materialogy, the deteriorated main reason of reinforced concrete structure durability is the corrosion of inner reinforcing bar.Concrete chlorion self-contained or outside intrusion is considered to cause the main reason of corrosion of reinforcing steel bar.The means that suppress steel bar corrosion are a lot, such as coating preservative coat and inhibiter etc., and wherein impressed current cathodic protection technology has been proved to be one of effective means, in some cases or even unique solution.The impressed current cathodic protection technology is based on PH-potential ph diagram ph principle and puts forward, and thinks the reinforcing bar current potential to be dropped on exempt from the erosion district by apply cathodic current to reinforcing bar, and then reaches the purpose of protection reinforcing bar.Although be furnished with various dispersions or continuous supplementary anode on the structural concrete surface, apply the effect that electric current can produce the control reinforcement corrosion, can not repair or improve the mechanical property of structure.
From the angle of structure design, the deteriorated decline that is embodied in the member mechanical property of concrete structure durability.Therefore the various countries scholar conducts extensive research, utilize steel plate and fiber-reinforced polymer (Fiber Reinforced Polymer, be called for short FRP) etc. structural reinforcing and reinforcement material, proposed the various structures reinforcement techniques such as increasing section and paste outside, and be applied to engineering practice.Structural strengthening material and concrete structure shared loading action can be considered in some cases the supplementary protection layer of concrete structure, and in the erosion of to a certain degree isolated outside atmosphere medium to internal structure, wrap up the reinforcing of post etc. such as FRP.But the deteriorated and loss of reinforcement material all can destroy this protective layer in the defective of construction technology and error, the structure military service process, causes the anticaustic of concrete structure.The more important thing is that the structural strengthening technology can't solve inside concrete harmful element (such as the muriate in the sea sand concrete and vitriol etc.) continuation of reinforcing bar is corroded.Existing a lot of structures are reinforced more than once in the Practical Project, and often bad situation is repaiied repeatly in appearance repeatly.
And in the prior art, owing to need by Controlling System regulating voltage or electric current, thereby electrochemical parameter is met the demands, and reaching the purpose of protection, this certainly will need high cost, so carry out structural strengthening simultaneously and the galvanic protection cost is comparatively high.
The utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to be provided for skeleton construction is carried out the bracing means of galvanic protection, be intended to solve to existing structure reinforce simultaneously and protect cause problem with high costs.
The technical solution of the utility model is as follows:
A kind of bracing means for skeleton construction being carried out galvanic protection, be used for the skeleton construction body is protected, wherein, described bracing means for skeleton construction being carried out galvanic protection comprises that the CFRP sheet material on the reinforcing area surface that is arranged on described skeleton construction body reaches the external power source that is used for many Main Reinforcing Steels that are embedded in the skeleton construction body are applied the electric current of constant size; Be electrically connected between the described many Main Reinforcing Steels, described external power source is connected between Main Reinforcing Steel and the CFRP sheet material.
Described bracing means for skeleton construction being carried out galvanic protection; wherein; described Main Reinforcing Steel is embedded in the concrete of described skeleton construction body, is connected by the matrix material with conducting function between described CFRP sheet material and the concrete.
Described bracing means for skeleton construction is carried out galvanic protection, wherein, described Main Reinforcing Steel, concrete, CFRP sheet material, external power source are electrically connected successively.
Described bracing means for skeleton construction is carried out galvanic protection, wherein, described CFRP sheet material is the CFRP plate, the thickness of described CFRP plate is 1 ~ 2mm.
Described bracing means for skeleton construction is carried out galvanic protection, wherein, described skeleton construction body is rectangular configuration or cylindrical structural.
Beneficial effect: reinforcement means and the device for skeleton construction being carried out galvanic protection provided by the utility model; mechanical property based on the CFRP excellence; electrochemical properties and the advantage such as can design; utilize CFRP to double as the dual characteristics of reinforcement material and supplementary anode; need not extra supplementary anode; structural strengthening system and cathodic protection system are integrated into a structural system; and adopted the direct supply that only can export constant current or voltage value; and save conventional detection and Controlling System; simplified cathodic protector; thereby reach the double effects of structural strengthening and reinforcing bar protection; and then Effective Raise security and the weather resistance of skeleton construction, and the cost that has obviously reduced structure repair.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for skeleton construction is carried out the bracing means preferred embodiment of galvanic protection.
Fig. 2 is the schema that the utility model is used for skeleton construction is carried out the reinforcement means preferred embodiment of galvanic protection.
Embodiment
The utility model is provided for skeleton construction is carried out the bracing means of galvanic protection, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below the utility model further described.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1, Fig. 1 is the structural representation that the utility model is used for skeleton construction is carried out the bracing means of galvanic protection, as shown in the figure, the utility model comprises partly overlapping two macrostructure bodies: skeleton construction body 10 and cathodic protection structure body 20; In skeleton construction of the present utility model; take full advantage of mechanical property and the electrochemical properties of CFRP material; so that the CFRP material has served as the dual role of reinforcement material and supplementary anode in structural system of the present utility model; therefore need not extra supplementary anode; structural strengthening system and cathodic protection system are integrated into a structural system; and adopted the direct supply that only can export constant current or voltage value; and save conventional detection and Controlling System; simplified cathodic protector; thereby reach the double effects of structural strengthening and reinforcing bar protection; and then Effective Raise security and the weather resistance of structure, and the cost that has obviously reduced structure repair.
As the carbon fibre reinforced composite (CFRP) of structural strengthening function because having the advantages such as high-strength light, modulus are large, good corrosion resistance, be a kind of structural strengthening material of maturation.In fact, CFRP is except the mechanical property that people know, because one of its main component that contains-carbon fiber has good electrochemical properties, i.e. and good electroconductibility and near the electropotential of precious metal, CFRP has good electrochemical properties equally.The utility model utilizes the electrochemical properties of CFRP to form the impressed current cathodic protection method that a kind of novel supplementary anode is applied to skeleton construction.Therefore, can be in conjunction with the characteristic of CFRP ruggedized construction, and then form a kind of structural strengthening method and device with cathode protecting function.
Come the utility model is further detailed below in conjunction with accompanying drawing.
Described skeleton construction body 10 comprises concrete 3, is embedded in the many Main Reinforcing Steels 4 in the concrete 3, and CFRP sheet material 1 is arranged on the reinforcing area surface of described skeleton construction body 10; Described CFRP sheet material 1 matrix material take CFRP as main body for the mechanical property of comprehensive utilization of C FRP and electrochemical properties, comprise mixing matrix material that different fibers or body material produce etc., such as the fibre reinforced composites that mixed carbon fiber and glass fibre etc.
Be electrically connected between the described Main Reinforcing Steel 4 and (connect by wire 5; also test the electrical connectivity between the Main Reinforcing Steel 4); be connected a negative pole that is used for the external power source 6(Main Reinforcing Steel 4 that Main Reinforcing Steel 4 applies the electric current of constant size is connected external power sources 6 between described Main Reinforcing Steel 4 and the CFRP sheet material 1; the positive pole of CFRP sheet material 1 connection external power source 6) is electrically connected successively between described Main Reinforcing Steel 4, concrete 3, CFRP sheet material 1, the external power source 6, and consists of cathodic protection structure body 20.Described skeleton construction body 10 and cathodic protection structure body 20, its principle of design and method of calculation can with reference to relevant specification, not repeat them here.
Described CFRP sheet material 1 has played the effect of reinforcement material and supplementary anode; it must have the performances such as reliable mechanical property, electrochemical properties and weather resistance under long duration load, environmental factors and protective current acting in conjunction, in order to bring into play simultaneously the function of structural strengthening and galvanic protection.
In the present embodiment; described CFRP sheet material 1 can be according to cross section type and the enforcement position of member, Working environment under the prerequisite that takes into full account Structural strengthening design and galvanic protection requirement; the factors such as constructing operation are selected CFRP cloth or the CFRP plate of different sorts, cross section type.
Described CFRP sheet material 1 is preferentially selected the CFRP plate, advises that its thickness is taken as 1 ~ 2mm, for example 1mm, 1.2mm, 1.5mm, 1.8mm or 2mm.
Further, described CFRP sheet material 1 is connected by the matrix material 2 with conducting function with concrete 3.Matrix material 2 wherein must have the requirement that enough mechanical properties satisfy structural strengthening, also wants simultaneously to transmit for a long time cathodic protection current, does not produce objectionable impurities.Described matrix material 2 must have reliable mechanical property and electroconductibility etc. under long duration load, environmental factors and protective current acting in conjunction, do not affect the performance of CFRP sheet material 1 dual purpose.Preferably, in the present embodiment, described matrix material 2 can be to mix an amount of conductive particle in the adhesive structure glue of insulation (this matrix material should have good electroconductibility and the CFRP sheet material firmly can be fixed on the performance of concrete surface, for example add the epoxy resin glue of conductive particle), such as the awkward Graphite Powder 99 that consumes of conductive particle, matrix material 2 modulation are evenly made its mechanical property and electroconductibility reliably and with long-term, and CFRP sheet material 1 and concrete 3 are used for boning.
Further, between the Main Reinforcing Steel 4 of concrete embedded set reliable electrical connection 5 should be arranged, guarantee that the Main Reinforcing Steel 4 in the reinforcing area can both be protected.
Concrete 3 should be continuous ionogen, if when having the crack to occur, adopts cement paste that it is filled up.Like this; Main Reinforcing Steel 4-concrete 3-CFRP sheet material 1 forms complete electric pathway can successfully transmit cathodic protection current; by Main Reinforcing Steel being applied the cathodic current of constant size (generally being Weak current); the current potential of Main Reinforcing Steel is dropped on exempt from the erosion district, and then reach the purpose of protection reinforcing bar.
Certainly, the utility model for skeleton construction be not limited only to above-mentioned rectangular beam structure, also can be used for the skeleton construction shape of various protection needs, such as structures such as concrete circular cylindricalitys.
Based on above-mentioned skeleton construction, the utility model also is provided for skeleton construction is carried out the reinforcement means of galvanic protection, as shown in Figure 2, comprises step:
S101, remove the concrete that loosens at the reinforcing area of skeleton construction body cutter, and polish flat; This step mainly is that cutter goes to show loose concrete, exposes solid part, and cleans out, and polishes flat.
Be electrically connected between S102, the many Main Reinforcing Steels that need protection with skeleton construction body embedded set; Can make like this reinforcing bar that need to be protected to obtain galvanic protection.
S103, on the reinforcing area surface of skeleton construction body the CFRP sheet material is set; The CFRP sheet material is as supplementary anode, and preferably adopts the CFRP plate, and firmly pressurizing binding material (such as cement paste) makes reinforcing area surface thickness homogeneous, after Main Reinforcing Steel is electrically connected, can guarantee that Main Reinforcing Steel can both be protected.
S104, between described Main Reinforcing Steel and CFRP sheet material, be connected an external power source that is used for Main Reinforcing Steel is applied the electric current of constant size.Can fill up the crack that occurs in the concrete with cement paste first; make concrete become continuous ionogen, then described Main Reinforcing Steel, concrete, CFRP sheet material, external power source are electrically connected successively, form complete path; transmit cathodic protection current, reinforcing bar is carried out galvanic protection.
The utility model has saved Controlling System and the detection system in the cathodic protection system owing to adopted the CFRP sheet material as supplementary anode in whole system, significantly improve the cost performance of structure repair.
In sum; a kind of reinforcement means and device for skeleton construction being carried out galvanic protection provided by the utility model; mechanical property based on the CFRP excellence; electrochemical properties and the advantage such as can design; utilize CFRP to double as the dual characteristics of reinforcement material and supplementary anode; need not extra supplementary anode; structural strengthening system and cathodic protection system are integrated into a structural system; and adopted the direct supply that only can export constant current or voltage value; and save conventional detection and Controlling System; simplified cathodic protector; thereby reach the double effects of structural strengthening and reinforcing bar protection; and then Effective Raise security and the weather resistance of structure, and the cost that has obviously reduced structure repair.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (5)
1. one kind is used for bracing means that skeleton construction is carried out galvanic protection, be used for the skeleton construction body is protected, it is characterized in that described bracing means for skeleton construction being carried out galvanic protection comprises the CFRP sheet material on the reinforcing area surface that is arranged on described skeleton construction body and is used for many Main Reinforcing Steels that are embedded in the skeleton construction body are applied the external power source of the electric current of constant size; Be electrically connected between the described many Main Reinforcing Steels, described external power source is connected between Main Reinforcing Steel and the CFRP sheet material.
2. the bracing means for skeleton construction being carried out galvanic protection according to claim 1; it is characterized in that; described Main Reinforcing Steel is embedded in the concrete of described skeleton construction body, is connected by the matrix material with conducting function between described CFRP sheet material and the concrete.
3. the bracing means for skeleton construction is carried out galvanic protection according to claim 2 is characterized in that, described Main Reinforcing Steel, concrete, CFRP sheet material, external power source are electrically connected successively.
4. the bracing means for skeleton construction is carried out galvanic protection according to claim 1 is characterized in that, described CFRP sheet material is the CFRP plate, and the thickness of described CFRP plate is 1 ~ 2mm.
5. the bracing means for skeleton construction is carried out galvanic protection according to claim 1 is characterized in that, described skeleton construction body is rectangular configuration or cylindrical structural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320190990 CN203256336U (en) | 2013-04-16 | 2013-04-16 | Reinforcement device for cathodically protecting reinforced concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320190990 CN203256336U (en) | 2013-04-16 | 2013-04-16 | Reinforcement device for cathodically protecting reinforced concrete structure |
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| CN203256336U true CN203256336U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320190990 Expired - Lifetime CN203256336U (en) | 2013-04-16 | 2013-04-16 | Reinforcement device for cathodically protecting reinforced concrete structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205758A (en) * | 2013-04-16 | 2013-07-17 | 深圳大学 | Strengthening method and device for cathode protection on reinforced concrete structure |
| WO2018126954A1 (en) * | 2017-01-03 | 2018-07-12 | 深圳大学 | Fiber composite material multifunctional disassembly-free formwork and method for fabrication thereof |
-
2013
- 2013-04-16 CN CN 201320190990 patent/CN203256336U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103205758A (en) * | 2013-04-16 | 2013-07-17 | 深圳大学 | Strengthening method and device for cathode protection on reinforced concrete structure |
| CN103205758B (en) * | 2013-04-16 | 2015-09-09 | 深圳大学 | For carrying out reinforcement means and the device of galvanic protection to skeleton construction |
| WO2018126954A1 (en) * | 2017-01-03 | 2018-07-12 | 深圳大学 | Fiber composite material multifunctional disassembly-free formwork and method for fabrication thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
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| CX01 | Expiry of patent term |