CN110806171A - System for monitoring structural cracks by adopting conductive patches - Google Patents
System for monitoring structural cracks by adopting conductive patches Download PDFInfo
- Publication number
- CN110806171A CN110806171A CN201911197974.2A CN201911197974A CN110806171A CN 110806171 A CN110806171 A CN 110806171A CN 201911197974 A CN201911197974 A CN 201911197974A CN 110806171 A CN110806171 A CN 110806171A
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- conductive
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- crack
- insulating plate
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/20—Investigating the presence of flaws
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a system for monitoring a structural crack by adopting conductive patches, which comprises a structural body (1), a plurality of conductive patches (2) arranged on the structural body (1), a resistance measuring device (3) connected with each conductive patch (2), a data acquisition system (4) connected with the resistance measuring device (3) and an analysis monitoring system (5) connected with the data acquisition system (4); the conductive patch (2) comprises a brittle insulating plate (21), a conductive film (22) arranged on the brittle insulating plate (21), and electrodes (23) arranged at two ends of the conductive film (22); this monitoring system has adopted the conductive patch who comprises fragile insulation board and conducting film, through the fracture of conductive patch, can survey this conductive patch resistance infinity to learn this department and produced the crack, separate the structure and conducting film because of the fragile insulation board, so this conductive patch also is applicable to the crack monitoring of steel construction.
Description
Technical Field
The invention belongs to the technical field of structural crack monitoring, and particularly relates to a system for monitoring a structural crack by adopting a conductive patch.
Background
With the rapid development of national economic construction in China, more and more large-scale infrastructure construction plays an ever-more important role, but due to geological disasters, self structures and the problem of long-term overhaul, cracks have great influence on the safety, the applicability, the durability and the like of the structures; in order to avoid accidents and accurately judge the development condition of the structural cracks, the width change trend of the wall structural cracks needs to be detected in real time, and the wall structural cracks are processed in time under the condition of generating the cracks.
At present, a plurality of crack monitoring methods are adopted, but generally, after cracks are generated, the width of the cracks of a concrete structure is monitored by adopting a direct measurement method, the method is time-consuming and labor-consuming, in a large structure, the monitoring cannot be carried out in place, and once the omission phenomenon occurs in an area, an engineering accident can be caused; meanwhile, most of the existing crack monitoring methods are used for monitoring concrete structures, and the monitoring of cracks of steel structures is very difficult.
The above problems are urgently needed to be improved and to be solved.
Disclosure of Invention
In order to overcome the defects of the prior art, a system for monitoring the structural crack by adopting a conductive patch is provided.
The technical scheme adopted by the invention is as follows: the system for monitoring the structural crack by adopting the conductive patches comprises a structural body, a plurality of conductive patches arranged on the structural body, a resistance measuring device connected with each conductive patch, a data acquisition system connected with the resistance measuring device and an analysis monitoring system connected with the data acquisition system; the conductive patch comprises a brittle insulating plate, a conductive film arranged on the brittle insulating plate, and electrodes arranged at two ends of the conductive film; the fragile insulating plate is disposed between the structural body and the conductive film and separates the structural body and the conductive film.
Preferably, the conductive patch is connected with the resistance measuring device through an electrode.
The brittle insulation board is directly connected with the structural body and separates the structural body from the conductive film, so that when the structural body is a steel structure, the conductive film is not in direct contact with the steel structure after the steel structure cracks, and the resistance measuring device can still measure infinite resistance at the position.
The conductive patches are arranged in an area of the structure body where cracks are prone to occur, a plurality of conductive patches are configured according to the size of the area, and only one data acquisition system needs to be configured in one area.
Preferably, the thickness of the brittle insulation board is 2mm to 5 mm.
The fragile insulating plate can adopt different thicknesses according to the length of the region on the structure, the longer the length is, the larger the thickness of the fragile insulating plate is, the certain rigidity of the fragile insulating plate can be improved, and the phenomenon that the measurement result is influenced due to bending fracture caused by overlarge length is avoided.
Preferably, the brittle insulation plate is a ceramic plate.
The ceramic chip has good brittleness, when a crack is generated on a structure at a certain position, the ceramic chip can be immediately broken after being subjected to crack tension, and meanwhile, the conductive film on the ceramic chip is broken, so that the resistance measuring device immediately measures the infinite resistance at the position.
Preferably, the thickness of the conductive film is 0.1 mm-0.2 mm.
Preferably, the conductive film is a conductive paint.
Preferably, the conductive paint can be any one of pure silver conductive paint, silver copper conductive paint or nickel conductive paint.
The conductive paint has a good conductive function, the thickness of the conductive paint is set to be 0.1-0.2 mm, the conductive paint is better matched with a brittle insulating plate, and when the brittle insulating plate is broken, the conductive paint can be broken along with the brittle insulating plate.
Preferably, the structure is a concrete structure or a steel structure.
The invention has the beneficial effects that: the conductive patch monitoring system for the structural crack adopts the conductive patch consisting of a brittle insulating plate and a conductive film, is arranged in an area of a structure body where cracks are easy to generate, and is disconnected under the tension of the cracks when cracks are generated at a certain position in the area, so that the resistance value measured by a resistance measuring device connected with the conductive patch is infinite, resistance data at the certain position is acquired by a data acquisition system and is transmitted to an analysis monitoring system, so that a monitoring person can timely know that cracks are generated at a certain point position in the certain area, and timely protective measures can be taken; because the brittle insulation board separates the conductive film from the structural body, when the structural body is a steel structure, the method can not influence the monitoring result of the system on the crack of the steel structure, and therefore the system is also suitable for a steel structure system.
Drawings
FIG. 1 is a schematic structural view of a system for monitoring structural cracks using conductive patches according to the present invention;
fig. 2 is a schematic structural diagram of the conductive patch in fig. 1.
In the figure: 1-structural body 2-conductive patch 3-resistance measuring device 4-data acquisition system 5-analysis monitoring system 21-brittle insulating plate 22-conductive film 23-electrode.
Detailed Description
The invention is further described below with reference to the specific drawings.
As shown in fig. 1 and 2, a system for monitoring a structural crack by using conductive patches is provided, which includes a structural body 1, a plurality of conductive patches 2 mounted on the structural body 1, a resistance measuring device 3 connected to each conductive patch 2, a data collecting system 4 connected to the resistance measuring device 3, and an analysis monitoring system 5 connected to the data collecting system 4 (see fig. 1); the conductive patch 2 comprises a ceramic sheet 21, conductive paint 22 arranged on the ceramic sheet 21, and electrodes 23 (see fig. 2) arranged at two ends of the conductive paint 22; the ceramic sheet 21 is disposed between and separates the structure 1 and the conductive film 22, and the conductive patch 2 is connected to the resistance measuring device 3 through an electrode 23 (see fig. 1).
The working principle of the invention is as follows: the system for monitoring the structural crack is very convenient to install and use, after the structure body 1 is built, the system can be installed at a point position where the structural crack is easy to generate, a worker only needs to coat structural adhesive on a monitoring point position of the structure body 1 and then paste a ceramic sheet 21 in a conductive patch 2 on the structure body 1, meanwhile, the conductive paint 22 is separated from the structure body 1, the point position where the structural crack is easy to generate of the structure body 1 is dispersive, so that the structural crack can be simultaneously monitored by dividing regions, tens of points on each region can be monitored, although tens of corresponding conductive patches 2 and resistance measuring devices 3 are needed, only one data acquisition system 4 is needed, when a certain point position or certain points in a certain region or certain regions generate cracks, the conductive patch 2 on the certain point position or certain points can be disconnected under the tension of the crack, and meanwhile, the resistance measuring device 3 corresponding to the point position has infinite resistance, and the data acquisition system 4 acquires resistance information, the resistance information on a certain point position or certain point positions is transmitted to the analysis monitoring system 5, and the analysis monitoring system 5 determines the certain point position or certain point positions on the certain area or certain area through analysis, so that monitoring personnel can know the area and the position where the crack is generated in time and perform monitoring and maintenance in time.
Through the above description, the system for monitoring the structural crack is disconnected through the conductive patch 2, and the resistance value on the conductive patch 2 is measured by the resistance measuring device 3 to be infinite so as to judge that the structural body 1 on the conductive patch 2 has the crack; meanwhile, the ceramic plate 21 separates the conductive paint 22 from the structural body 1, so that the resistance result measured by the resistance measuring device 3 is not influenced no matter whether the structural body 1 is a steel structure or a concrete structure, and the system for monitoring the structural cracks is also suitable for the steel structure.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. Adopt system in conductive paster monitoring structure crack, its characterized in that: the device comprises a structure body (1), a plurality of conductive patches (2) arranged on the structure body (1), a resistance measuring device (3) connected with each conductive patch (2), a data acquisition system (4) connected with the resistance measuring device (3) and an analysis monitoring system (5) connected with the data acquisition system (4);
the conductive patch (2) comprises a brittle insulating plate (21), a conductive film (22) arranged on the brittle insulating plate (21), and electrodes (23) arranged at two ends of the conductive film (22); the brittle insulating plate (21) is disposed between the structure (1) and the conductive film (22) and separates them.
2. The system for monitoring structural cracks using conductive patches of claim 1, wherein: the conductive patch (2) is connected with the resistance measuring device (3) through an electrode (23).
3. The system for monitoring structural cracks using conductive patches as recited in claim 1, wherein: the thickness of the brittle insulating plate (21) is 2 mm-5 mm.
4. A system for monitoring structural cracks using conductive patches as claimed in claim 1 or claim 3, characterized in that: the fragile insulating plate (21) is a ceramic plate.
5. The system for monitoring structural cracks using conductive patches as recited in claim 1, wherein: the thickness of the conductive film (22) is 0.1 mm-0.2 mm.
6. The system for monitoring structural cracks using conductive patches of claim 1 or 5, wherein: the conductive film (22) is conductive paint.
7. The system of claim 6, wherein the conductive patch is configured to monitor a structural crack by: the conductive paint is any one of pure silver conductive paint, silver copper conductive paint or nickel conductive paint.
8. The system for monitoring structural cracks using conductive patches as recited in claim 1, wherein: the structure body (1) is of a concrete structure or a steel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197974.2A CN110806171A (en) | 2019-11-29 | 2019-11-29 | System for monitoring structural cracks by adopting conductive patches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197974.2A CN110806171A (en) | 2019-11-29 | 2019-11-29 | System for monitoring structural cracks by adopting conductive patches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110806171A true CN110806171A (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911197974.2A Pending CN110806171A (en) | 2019-11-29 | 2019-11-29 | System for monitoring structural cracks by adopting conductive patches |
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| Country | Link |
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| CN (1) | CN110806171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748156A (en) * | 2020-12-24 | 2021-05-04 | 哈尔滨工业大学 | Structural apparent crack monitoring system and monitoring method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2687608Y (en) * | 2004-04-12 | 2005-03-23 | 邓安仲 | Apparatus for continuously monitoring deformation and cracking of forced member |
| CN202794092U (en) * | 2012-09-14 | 2013-03-13 | 于百勇 | Metro tunnel concrete crack monitoring device based on flexible conductive coating |
| CN105445331A (en) * | 2015-12-18 | 2016-03-30 | 镇江建科建设科技有限公司 | Concrete material apparent crack monitoring and detecting system, and monitoring and detecting method thereof |
| CN108549713A (en) * | 2018-04-20 | 2018-09-18 | 上海筑监宝信息技术有限公司 | A kind of building monitoring method and system based on artificial intelligence and expert's interaction |
| CN109539969A (en) * | 2018-12-29 | 2019-03-29 | 江苏大学 | Structure monitoring system and method thereof |
| CN210719009U (en) * | 2019-11-29 | 2020-06-09 | 中冶建筑研究总院（上海）有限公司 | System for monitoring structural cracks by adopting conductive patches |
-
2019
- 2019-11-29 CN CN201911197974.2A patent/CN110806171A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2687608Y (en) * | 2004-04-12 | 2005-03-23 | 邓安仲 | Apparatus for continuously monitoring deformation and cracking of forced member |
| CN202794092U (en) * | 2012-09-14 | 2013-03-13 | 于百勇 | Metro tunnel concrete crack monitoring device based on flexible conductive coating |
| CN105445331A (en) * | 2015-12-18 | 2016-03-30 | 镇江建科建设科技有限公司 | Concrete material apparent crack monitoring and detecting system, and monitoring and detecting method thereof |
| CN108549713A (en) * | 2018-04-20 | 2018-09-18 | 上海筑监宝信息技术有限公司 | A kind of building monitoring method and system based on artificial intelligence and expert's interaction |
| CN109539969A (en) * | 2018-12-29 | 2019-03-29 | 江苏大学 | Structure monitoring system and method thereof |
| CN210719009U (en) * | 2019-11-29 | 2020-06-09 | 中冶建筑研究总院（上海）有限公司 | System for monitoring structural cracks by adopting conductive patches |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748156A (en) * | 2020-12-24 | 2021-05-04 | 哈尔滨工业大学 | Structural apparent crack monitoring system and monitoring method |
| CN112748156B (en) * | 2020-12-24 | 2023-11-17 | 哈尔滨工业大学 | Structural apparent crack monitoring system and monitoring method |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230817 Address after: 922 Fujin Road, Baoshan District, Shanghai, 201900 Applicant after: MCC testing and certification (Shanghai) Co.,Ltd. Applicant after: Shanghai Housing Safety Supervision Office Address before: Room 1212, 43 Guoquan Road, Yangpu District, Shanghai 200433 Applicant before: CHINA METALLURGICAL CONSTRUCTION RESEARCH INSTITUTE (SHANGHAI) CO.,LTD. Applicant before: Shanghai Housing Safety Supervision Office |
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