CN117347360A - A reinforced concrete fiber grating corrosion monitoring device based on lever structure - Google Patents
A reinforced concrete fiber grating corrosion monitoring device based on lever structure Download PDFInfo
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- CN117347360A CN117347360A CN202311320357.3A CN202311320357A CN117347360A CN 117347360 A CN117347360 A CN 117347360A CN 202311320357 A CN202311320357 A CN 202311320357A CN 117347360 A CN117347360 A CN 117347360A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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Abstract
本发明公开了一种基于杠杆结构的钢筋混凝土光纤光栅腐蚀监测装置，属于光纤传感技术领域，包括基座，基座底部设置支撑梁，支撑梁上设置有杠杆旋转臂，杠杆旋转臂一端伸向基座主体外，杠杆旋转臂伸出基座主体外的一端插接有爪装配插槽，爪装配插槽连接有测量接触爪，基座上固定有增敏绞线以及与增敏绞线配合粘接的光纤光栅，杠杆旋转臂另一端和光纤光栅接触，光纤光栅尾纤伸向基座主体外并与解调仪相连，测量接触爪将待测量钢筋紧密贴合包裹。本发明能够同时满足对钢筋混凝土铸件长期实时监测，具有较高的稳定性和灵敏性，且灵敏度可调具有较高的稳定性和灵敏度以及灵敏可调度，可以及时分辨出钢筋发生腐蚀时更细小的变化。
The invention discloses a reinforced concrete optical fiber grating corrosion monitoring device based on a lever structure, which belongs to the field of optical fiber sensing technology and includes a base. A support beam is provided at the bottom of the base, and a lever rotating arm is provided on the support beam. Towards the outside of the base body, one end of the lever rotating arm extending out of the base body is plugged into a claw assembly slot. The claw assembly slot is connected to a measuring contact claw. The base is fixed with a sensitivity-increasing twisted wire and a sensitivity-increasing twisted wire. With the bonded fiber grating, the other end of the lever rotating arm is in contact with the fiber grating. The fiber grating pigtail extends out of the base body and is connected to the demodulator. The measuring contact claw tightly wraps the steel bar to be measured. The invention can meet the requirements of long-term real-time monitoring of reinforced concrete castings at the same time, has high stability and sensitivity, and the sensitivity is adjustable. The change.
Description
Technical Field
The invention belongs to the technical field of optical fiber sensing, and particularly relates to a reinforced concrete fiber bragg grating corrosion monitoring device based on a lever structure.
Background
Reinforced concrete structures are widely used in the field of modern architecture, and their safety and stability are critical to the service life of the entire building. The reinforced concrete structure has some common inherent problems, especially the problem of steel bar corrosion, and is often difficult to detect because of a concrete protection layer, which brings hidden danger to the safety of the building, the steel bar corrosion can lead to cracking of the concrete, the structural performance of the concrete is seriously affected, and even serious consequences such as building collapse and the like can be possibly caused. For this problem, there are many monitoring technologies for corrosion of steel bars, such as electrochemical methods, acoustic emission technologies, electromagnetic wave detection methods, etc. However, these monitoring means not only require complicated equipment and techniques, but also have many limitations such as strong dependence on environmental conditions, inability to achieve long-term, continuous monitoring, and failure to accurately detect early corrosion. The fiber bragg grating sensor is an ideal reinforcement corrosion monitoring means because of the advantages of high measurement accuracy, electromagnetic interference resistance, corrosion resistance and the like, and long-term continuous monitoring. Accordingly, there is an urgent need to provide a fiber bragg grating monitoring device for monitoring the corrosion level of reinforced concrete.
Disclosure of Invention
The invention aims to solve the technical problem of providing the reinforced concrete fiber bragg grating corrosion monitoring device based on the lever structure, which can simultaneously realize long-term real-time monitoring on reinforced concrete castings, has higher stability and sensitivity, is adjustable in sensitivity, can perform temperature compensation and timely distinguish finer changes when the reinforced concrete is corroded, and can accurately provide more important data support for maintenance and monitoring of the reinforced concrete structure while saving the cost of the device.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the reinforced concrete fiber grating corrosion monitoring device based on the lever structure comprises a base, a supporting beam is arranged at the bottom of the base, a lever rotating arm is arranged on the supporting beam, one end of the lever rotating arm extends out of a base body, one end of the lever rotating arm extending out of the base body is inserted with a claw assembly slot, the claw assembly slot is connected with a measurement contact claw, a sensitization stranded wire and a fiber grating matched and adhered with the sensitization stranded wire are fixed on the base, the other end of the lever rotating arm is contacted with the fiber grating, a fiber grating tail fiber extends out of the base body and is connected with a demodulator, and the measurement contact claw tightly adheres and wraps a steel bar to be measured.
The technical scheme of the invention is further improved as follows: the lever swinging arms are arranged in parallel, two fiber gratings are arranged on the upper side and the lower side of the base, and the lever swinging arms are respectively contacted with the upper fiber grating and the lower fiber grating.
The technical scheme of the invention is further improved as follows: the lever swinging arms are L-shaped structures and comprise long arms and short arms, the long arms of the two lever swinging arms extend out of the base body, and the two short arms are oppositely contacted with the fiber gratings on the upper side and the lower side respectively.
The technical scheme of the invention is further improved as follows: the lever arm fixing shaft and the fixing screw are respectively arranged on the supporting beam and are matched with each other, and the lever arm fixing shaft and the fixing screw are positioned on the same horizontal line with the central hole of the supporting beam.
The technical scheme of the invention is further improved as follows: one end of the long arm of the lever rotating arm is provided with a matching slot for the assembly slot of the splicing claw, the long arm of the lever rotating arm is provided with a fixed axle center, and the lever arm fixed axle penetrates through the fixed axle center and the central hole of the supporting beam to hinge the two lever rotating arms on two sides of the supporting beam.
The technical scheme of the invention is further improved as follows: the upper top and the lower bottom of the base are respectively provided with two fixing tables, the fixing tables are provided with knobs for fixing the sensitization stranded wires, grating fixing grooves for fixing the fiber bragg gratings are formed below the knobs, the fiber bragg grating heads and the fiber bragg grating tails are respectively adhered to the grating fixing grooves of the two fixing tables on the same side, the fiber bragg grating regions are adhered to the sensitization stranded wires, and the short arms of the lever rotating arms are opposite to the middle of the two fixing tables on the same side.
The technical scheme of the invention is further improved as follows: the base is box structure, and fixed slide rail that is used for fixed dust guard is offered to the base both sides, and in the dust guard inserted fixed slide rail, the lever swinging boom one end stretched out the base body outside through the window that base one side was offered, has offered the optic fibre via hole on the base side of fixed station homonymy, and the tail fiber part of fiber grating stretched out the base body outside through the optic fibre via hole and links to each other with the demodulator.
The technical scheme of the invention is further improved as follows: a sliding groove for fixing the balance weight block of the lever is formed in the outer side face of one end of the short arm of the lever rotating arm, a fixed disc connected with the supporting beam is arranged on one side of the fixed axis, and a grating pressing groove is formed below the sliding groove and is in contact with the fiber bragg grating.
The technical scheme of the invention is further improved as follows: the measuring contact claw is provided with a claw head closely attached to the steel bar to be measured, the lower part of the claw head is provided with a spring type blocking nail, and the spring type blocking nail is provided with a pin through hole.
The technical scheme of the invention is further improved as follows: the claw assembly slot is provided with a cylindrical groove, a pin through hole corresponding to the spring type blocking pin is formed in the cylindrical groove, the measurement contact claw and the claw assembly slot are fixedly connected with each other through the pin and the pin through hole in a matched mode, the lower end of the claw assembly slot is provided with an anti-slip pattern and an inserting groove, and the claw assembly slot and the measurement contact claw are detachable.
By adopting the technical scheme, the invention has the following technical progress:
the invention can monitor the surface corrosion and the internal corrosion state of the reinforced concrete structure in real time for a long time.
The device structure is sensitized by adopting a two-stage sensitization method, and the device structure is sensitized by the lever rotating arm and the sensitization stranded wire respectively, so that strain generated by corrosion can be amplified by using the lever structure; the grating is adhered to the sensitization twisted wire, so that the service life of the fiber grating is guaranteed, the sensitization twisted wire can be screwed by screwing a knob on a base fixing table, and the prestretching of the fiber grating is increased, and the sensitivity is improved.
According to different environments to be monitored, the lever rotating arm adjusts the magnification factor by changing the proportion of the lever structure power arm and the resistance arm according to the requirements, so that higher sensitivity of the specific environment is achieved. Meanwhile, the sensitivity of the limit measurement range and the device corresponding to the limit measurement range is changed by changing the screwing degree of the sensitization stranded wire, and the higher the screwing degree of the sensitization stranded wire is, the smaller the measurement range is.
Because the friction force and the self gravity of the structure of the invention are greatly influenced by the measurement by adopting the lever rotating arm, the external force balancing operation is carried out on the lever rotating arm by adopting a mode of adding the counterweight, thereby reducing the influence of other factors on the invention and ensuring the stability of the monitoring process of the device. The measuring contact claw is used for laminating and wrapping the steel bar sample to be measured, and other core components are wrapped in the base and are not easy to damage, so that the invention can realize stable and reliable monitoring.
Under the condition of ensuring that the measuring contact claw is in contact with the steel bar to be measured, other device structures can be fixed on the surface of the structure to be measured in an adhesive or integral pouring mode, and the mounting mode is simple and convenient.
Drawings
FIG. 1 is a schematic view of the structure of an assembly of the present invention;
FIG. 2 is an exploded view of the installation of the assembly structure of the present invention;
FIG. 3 is a schematic view of a stationary base of the present invention;
FIG. 4 is a schematic view of a dust guard of the present invention;
FIG. 5 is a schematic view of the external overall structure of the present invention;
FIG. 6 is a schematic view of a lever pivot arm according to the present invention;
FIG. 7 is a schematic view of the jaw engagement of the present invention;
FIG. 8 is a schematic view of a measurement contact jaw of the present invention;
FIG. 9 is a schematic view of a pawl assembly socket of the present invention;
FIG. 10 is a schematic view of a lever balancing weight of the present invention;
the device comprises a base, a dustproof plate, a lever rotating arm, a measuring contact claw, a claw assembling slot, a lever balancing weight, a sensitization stranded wire, a fiber bragg grating, a lever arm fixing shaft, a fixing screw, a fixing bolt, a pin, a passing window, a supporting beam, a fixing sliding rail, a grating fixing groove, a fixing knob, a fiber passing hole, a fixing table, a fixing shaft center, a 3-1, a fixing shaft center, a 3-2, a matching slot, a 3-3, a fixing plate, a 3-4, a sliding groove, a 3-5, a grating pressing groove, a 4-1, a claw head, a 4-2, a spring type blocking pin, a 4-3, a pin through hole, a 5-1, a pin through hole, a 5-2, a cylinder groove, a 5-3, an anti-skid pattern, a 5-4 and a plug-in groove, wherein the base is arranged on the base.
Detailed Description
The invention is further illustrated by the following examples:
as shown in fig. 1 to 5, the base 1 is a box structure, two sides of the base are provided with fixed sliding rails 1-3 for fixing the dust-proof plate 2, two parallel lever rotating arms 3 are matched and fixed on a supporting beam 1-2 in the center of the base 1 through lever arm fixing shafts 9 and fixing screws 10, and extend out of a main body of the base 1 through a through window 1-1 arranged on the left side of the base 1, and the lever arm fixing shafts 9 and the fixing screws 10 are on the same horizontal line with a central hole of the supporting beam 1-2. The upper top and the lower bottom of the base 1 are respectively provided with two fixing tables 1-7 in a separated mode, the fixing tables 1-7 are used for fixing fiber gratings 8 on the upper side and the lower side, and knobs 1-5 for fixing the sensitization stranded wires 7 are arranged on the fixing tables 1-7, so that the tightness state of the sensitization stranded wires 7 can be adjusted according to requirements. The grating fixing groove 1-4 for fixing the fiber bragg gratings 8 is formed right below the knob 1-5, the two fiber bragg gratings 8 positioned on the upper side and the lower side of the base 1 can realize temperature mutual compensation, and the temperature and the strain factor are separated through a difference method, so that the effect of more accurate measurement is achieved. Two corresponding optical fiber through holes 1-6 are arranged on the right side of the base 1, and tail fiber parts of two optical fiber gratings 8 extend out of the device through the optical fiber through holes 1-6 and are connected with a demodulator.
As shown in fig. 1, 2, 3, 6 and 10, in the unmeasured state, the two lever rotating arms 3 keep balance at two ends by taking the lever arm fixing shaft 9 as a fulcrum, and the lever rotating arms 3 are in a side-by-side L-shaped structure, including a long arm and a short arm, and the end parts of the long arm ends are respectively provided with a matching slot 3-2 for being connected with the claw assembling slot 5. The short arms of the two lever rotating arms 3 are opposite in orientation, and are respectively contacted with the upper side fiber bragg gratings 8 and the lower side fiber bragg gratings in an unmeasured state, but are not deformed. The long arm of the lever rotating arm 3 is provided with a fixed axle center 3-1, the position of the fixed axle center 3-1 can be adjusted according to the required amplification proportion, and different sensitization effects can be obtained by different proportion coefficients of the power arm and the resistance arm. One side of the fixed axle center 3-1 is provided with a fixed disc 3-3 which is attached to the central hole of the supporting beam 1-2, and the lever arm fixed axle 9 passes through the fixed axle center 3-1 and the central hole of the supporting beam 1-2 to hinge the two lever rotating arms 3 on the two sides of the supporting beam 1-2. Because of the friction force existing between the structures, the whole assembly structure of the measuring contact claw 4 and the claw assembly slot 5 is heavy, and the sliding groove 3-4 is formed on the outer side surface of the short arm of the lever rotating arm 3 and used for fixing the lever balancing weight 6 so as to balance the influence of external force, so that the two ends of the lever rotating arm 3 are balanced before the measurement is started. The grating pressing groove 3-5 is arranged below the sliding groove 3-4, the grating pressing groove 3-5 is in contact with the fiber bragg grating 8, and the fiber bragg grating 8 is coated by an elastic colloid coating to protect the deformed fiber bragg grating 8 from being damaged during monitoring.
As shown in fig. 1, 2, 3, 7, 8 and 9, the two measuring contact claws 4 adopt a claw head 4-1 structure tightly attached to the steel bar to be measured, the two claw heads 4-1 are opposite to each other in direction, and the steel bar to be measured is wrapped by 360 degrees, so that corrosion products are accurately captured, and the problem of leakage and error detection caused by a point measuring state is effectively avoided due to the adoption of a surface contact type measuring mode. The tail of the measuring contact claw 4 is provided with the spring type blocking nail 4-2 which is convenient to fix in the cylindrical groove 5-2 of the claw assembly slot 5, the spring type blocking nail 4-2 and the cylindrical groove 5-2 are provided with pin through holes at the same positions, and the pin 11 can be used for fixing the measuring contact claw 4 and the claw assembly slot 5 more firmly, so that the measuring contact claw 4 is prevented from shaking to influence the measuring precision. The lower end of the claw assembly slot 5 is provided with an anti-skid thread 5-3 and a splicing groove 5-4, and the whole assembly structure of the measurement contact claw 4 and the claw assembly slot 5 can be fixed on the lever rotating arm 3. The measuring contact claw 4 and the claw assembly slot 5 can be separated and disassembled, and claw structures with different materials and different sizes can be replaced according to different monitoring steel bar sizes so as to cope with different use occasions, and the cost of the device is saved.
As shown in fig. 1 to 3, the sensitization strand 7 is fixed on the knob 1-5 of the base 1, the tightness of the sensitization strand 7 is adjusted by screwing the knob 1-5, and different prestress is applied to achieve different sensitization effects. The fiber head and the fiber tail of the fiber bragg grating 8 are respectively adhered to the grating fixing grooves 1-4 on the fixing tables 1-7 by using epoxy resin glue, the grating area of the fiber bragg grating 8 is tightly adhered to the sensitized stranded wire 7 by using epoxy resin glue, the service life of the fiber bragg grating 8 is guaranteed, the sensitized stranded wire 7 is stretched by adjusting the tightness state of the knob, the pre-stretching value of the fiber bragg grating 8 can be adjusted along with the stretching of the sensitized stranded wire 7, and the higher the pre-stretching value is, the higher the measurement precision is, and the stronger the sensitivity is.
The base 1 can be directly poured on the surface of the structure to be tested by using a die and concrete as required, so that the cost can be reduced. The lever rotating arm 3 can be made of light materials, the measuring contact claw 4 can be made of corrosion-resistant materials such as nickel alloy, titanium alloy and the like, and the sensitization stranded wire 7 can be made of high-toughness materials such as carbon wires and the like.
When the steel bar to be tested is corroded, the volume of the corrosion product is larger than that of the original steel bar, the volume of the steel bar is expanded, the expansion of the volume can push the measurement contact claw 4 to move, the lever rotating arm 3 drives the sensitization stranded wire 7 and the fiber bragg grating 8 to deform, the central wavelength of the fiber bragg grating 8 is changed, and therefore the corrosion condition of the steel bar to be tested is monitored. By modifying the proportionality coefficients of different power arms and resistance arms of the lever rotating arm 3, different amplification ratios can be realized to obtain different sensitization effects, and high sensitivity corresponds to a low measurement range, so that the structure of the device needs to be changed according to different monitoring requirements.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides a reinforced concrete fiber bragg grating corrosion monitoring device based on lever structure which characterized in that: including base (1), base (1) bottom sets up supporting beam (1-2), is provided with lever swinging boom (3) on supporting beam (1-2), lever swinging boom (3) one end stretches to outside base (1) main part, lever swinging boom (3) are pegged graft and are had claw assembly slot (5) to the outer one end of base (1) main part, claw assembly slot (5) are connected with measurement contact claw (4), be fixed with sensitization stranded conductor (7) on base (1) and with sensitization stranded conductor (7) cooperation bonded fiber grating (8), lever swinging boom (3) other end and fiber grating (8) contact, fiber grating (8) tail fiber stretches to outside base (1) main part and links to each other with the demodulator, and measurement contact claw (4) are closely laminated the parcel with the reinforcing bar that awaits measuring.
2. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 1, wherein: the lever rotating arms (3) are arranged in parallel, two fiber bragg gratings (8) are arranged on the upper side and the lower side of the base (1), and the lever rotating arms (3) are respectively contacted with the upper fiber bragg gratings (8) and the lower fiber bragg gratings (8).
3. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 2, wherein: the lever rotating arms (3) are of L-shaped structures and comprise long arms and short arms, the long arms of the two lever rotating arms (3) extend out of the base (1) main body, and the two short arms are opposite in orientation and respectively contact with the fiber bragg gratings (8) on the upper side and the lower side.
4. A reinforced concrete fiber bragg grating corrosion monitoring device based on a lever structure according to any one of claims 1-3, wherein: the support beam (1-2) is provided with a lever arm fixing shaft (9) and a fixing screw (10) respectively, the lever arm fixing shaft (9) is matched with the fixing screw (10), and the lever arm fixing shaft (9) and the fixing screw (10) are on the same horizontal line with the central hole of the support beam (1-2).
5. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 4, wherein: the lever arm fixing device is characterized in that a matching slot (3-2) for inserting a claw assembly slot (5) is arranged at one end of a long arm of the lever rotating arm (3), a fixing axle center (3-1) is arranged on the long arm of the lever rotating arm (3), and a lever arm fixing axle (9) penetrates through the fixing axle center (3-1) and a central hole of the supporting beam (1-2) to hinge the two lever rotating arms (3) on two sides of the supporting beam (1-2).
6. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 1, wherein: the optical fiber grating fixing device is characterized in that two fixing tables (1-7) are respectively arranged on the upper top and the lower bottom of the base (1), a knob (1-5) for fixing a sensitization stranded wire (7) is arranged on the fixing tables (1-7), a grating fixing groove (1-4) for fixing an optical fiber grating (8) is formed below the knob (1-5), the fiber head and the fiber tail of the optical fiber grating (8) are respectively adhered to the grating fixing grooves (1-4) of the two fixing tables (1-7) on the same side, a grating region of the optical fiber grating (8) is adhered to the sensitization stranded wire (7), and a short arm of a lever rotating arm (3) is opposite to the middle of the two fixing tables (1-7) on the same side.
7. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 6, wherein: the base (1) is of a box structure, fixed sliding rails (1-3) used for fixing dust-proof plates (2) are arranged on two sides of the base (1), the dust-proof plates (2) are inserted into the fixed sliding rails (1-3), one end of each lever rotating arm (3) extends out of a base (1) body through a window (1-1) arranged on one side of the base (1), optical fiber through holes (1-6) are formed in the side face of the base (1) on the same side of a fixed table (1-7), and tail fiber parts of the optical fiber gratings (8) extend out of the base (1) body through the optical fiber through holes (1-6) to be connected with a demodulator.
8. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 5, wherein: a sliding groove (3-4) for fixing a lever balancing weight (6) is formed in the outer side face of one end of the short arm of the lever rotating arm (3), a fixing disc (3-3) connected with the supporting beam (1-2) is arranged on one side of the fixing axis (3-1), a grating pressing groove (3-5) is formed below the sliding groove (3-4), and the grating pressing groove (3-5) is in contact with the fiber bragg grating (8).
9. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 1, wherein: the measuring contact claw (4) is provided with a claw head (4-1) closely attached to the steel bar to be measured, a spring type blocking nail (4-2) is arranged at the lower part of the claw head (4-1), and a pin through hole (4-3) is formed in the spring type blocking nail (4-2).
10. The lever structure-based reinforced concrete fiber grating corrosion monitoring device according to claim 9, wherein: the device is characterized in that the claw assembly slot (5) is provided with a cylindrical slot (5-2), a pin through hole (5-1) corresponding to the spring type blocking pin (4-2) is formed in the cylindrical slot (5-2), the measurement contact claw (4) and the claw assembly slot (5) are fixedly connected with the pin through hole in a matched mode through pins (11), anti-slip patterns (5-3) and the inserting slot (5-4) are formed in the lower end of the claw assembly slot (5), and the claw assembly slot (5) is detachably detached from the measurement contact claw (4).
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| CN202311320357.3A CN117347360A (en) | 2023-10-12 | 2023-10-12 | A reinforced concrete fiber grating corrosion monitoring device based on lever structure |
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| CN202311320357.3A CN117347360A (en) | 2023-10-12 | 2023-10-12 | A reinforced concrete fiber grating corrosion monitoring device based on lever structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118914060A (en) * | 2024-10-11 | 2024-11-08 | 中信建设有限责任公司 | Reinforcing steel bar local corrosion monitoring device based on concrete structure |
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| CN113514002A (en) * | 2021-07-20 | 2021-10-19 | 大连理工大学 | A optic fibre intelligence clamp for monitoring reinforcement corrosion volume expansion deformation |
| CN113959935A (en) * | 2021-11-02 | 2022-01-21 | 燕山大学 | A Corrosion Monitoring Device for Steel Bars in Reinforced Concrete Components |
| CN114019017A (en) * | 2021-11-10 | 2022-02-08 | 燕山大学 | Carbon steel pipeline internal corrosion monitoring device based on magnetic force |
| TWM626988U (en) * | 2022-01-03 | 2022-05-11 | 盛遠實業有限公司 | Fiber Bragg Grating Differential Sink Sensing Device |
| CN115824075A (en) * | 2022-08-29 | 2023-03-21 | 武汉理工大学 | Non-type sensitization fiber grating strain sensor |
| CN116520390A (en) * | 2023-04-27 | 2023-08-01 | 西安石油大学 | Fiber bragg grating medium-high frequency geophone based on lever amplification structure |
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| CN118914060A (en) * | 2024-10-11 | 2024-11-08 | 中信建设有限责任公司 | Reinforcing steel bar local corrosion monitoring device based on concrete structure |
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