CN115522490A - Sound barrier for realizing real-time monitoring of structural health state and design method thereof - Google Patents
Sound barrier for realizing real-time monitoring of structural health state and design method thereof Download PDFInfo
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- CN115522490A CN115522490A CN202211170260.4A CN202211170260A CN115522490A CN 115522490 A CN115522490 A CN 115522490A CN 202211170260 A CN202211170260 A CN 202211170260A CN 115522490 A CN115522490 A CN 115522490A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0023—Details, e.g. foundations
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
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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
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a sound barrier for realizing real-time monitoring of structural health state and a design method thereof. The invention has the advantages that: on the basis of keeping the acoustic performance and the mechanical performance of the sound barrier, the real-time monitoring of the health state of the sound barrier structure is realized; the monitoring of the structural health degree of a single sound barrier screen body is realized, and the monitoring of the structural health degree of a combined structure of a plurality of sound barrier screen bodies within a certain length range can be realized simultaneously; the monitoring items are various, so that the structural health state of the sound barrier can be effectively and comprehensively evaluated.
Description
Technical Field
The invention relates to the technical field of traffic noise control, in particular to a sound barrier for realizing real-time monitoring of structural health state and a design method thereof.
Background
The sound barrier is a main method for solving the problem of rail transit noise. The sound barrier is installed on the track traffic overhead line and passes through the resident concentrated distribution section. When the train passes through the sound barrier setting range, can frequently produce aerodynamic force wind load, the sound barrier is in all the time and inhales one towards the state, and the material "fatigue" appears in the difficult emergence. The fixed parts such as bolts and inserting plates are easy to loosen, and finally the sound barrier is deformed and broken or the foundation collapses. If the vehicle is not found in time, safety accidents are caused, and accidents are caused when the vehicle runs.
Therefore, after the sound barrier is installed, the transportation and maintenance department must frequently perform on-site inspection on the foundation, the stable structure of the upright post, the surface damage, the corrosion prevention of the component and the like. At present, the frequency of detecting the bolts of the sound barrier by an operation and maintenance department is usually once a quarter, although the frequency can adapt to the loosening and aging period of the bolt parts, the examination of the health state of the sound barrier is not timely and intelligent enough, and a plurality of operation difficulties also exist. And the monitoring method is also mostly manual visual spot inspection, is limited by visual conditions at night, and is not timely and comprehensive in problem discovery.
The invention discloses a high-speed railway sound barrier health index management and evaluation system and a monitoring device, and discloses an index management and evaluation system for monitoring the high-speed railway sound barrier health degree, which comprises a safety index, an operation index and a basic index. The state judgment of the sound barrier is obtained by detecting the stress and the angle offset of the sound barrier, and the operation index and the basic index through a hierarchical fuzzy evaluation calculation formula disclosed in the patent. Stress and angle offset data of the key sound barrier are acquired through a strain sensor arranged in the middle of the H-shaped steel and an angle sensor arranged at the bottom of the H-shaped steel. The sensors are all installed on the H-shaped steel, and collected data are stress and angle results of the H-shaped steel and the left and right two-span sound barrier structures and are states of the screen body unit plates for indirect representation. When the abnormal state is judged to occur, the indirect transmission state of the H-shaped steel is abnormal, the specific abnormal positions of the left and right cross-screen bodies cannot be specifically positioned, and operation and maintenance personnel still need to perform field inspection.
Disclosure of Invention
The invention aims to provide a sound barrier for realizing real-time monitoring of the structural health state and a design method thereof according to the defects of the prior art, wherein the monitoring and positioning of the structural health state of the sound barrier are realized by embedding a Michelson interference type optical fiber sensor in a sound barrier screen body and designing the layout of a reference optical fiber and a sensing optical fiber of the Michelson interference type optical fiber sensor, the monitoring range and the monitoring type are expanded, and the accuracy and the comprehensiveness of the evaluation of the structural health state of the sound barrier are improved.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a realize sound barrier of structure health condition real-time supervision, includes the sound barrier screen body, its characterized in that: the utility model discloses a sound barrier screen, including sound barrier screen, coupler, sound barrier screen is internal to be buried underground two or more than two single mode fiber, two single mode fiber constitutes jointly and buries underground the internal Michelson interference type fiber sensor of sound barrier screen, single mode fiber's one end is provided with the end mirror, and the other end is connected to the coupler, the coupler is connected with light source and demodulator, the light source warp the coupler to end mirror transmission laser, laser passes through behind the reflection of end mirror the coupler extremely the demodulator.
Including a plurality of the sound barrier screen body, it is a plurality of bury respectively in the sound barrier screen body single mode fiber, one of them single mode fiber arrange in the tip of the sound barrier screen body is as reference fiber, and remaining single mode fiber arranges as sensing fiber and follows the direction of height uniform spacing of the sound barrier screen body is buried underground.
And the sensing optical fibers in the sound barrier screen bodies share one reference optical fiber.
The sensing optical fibers in the sound barrier screen bodies are designed to be through, namely one or more sensing optical fibers are arranged in the sound barrier screen bodies in a penetrating mode, so that the sound barrier screen bodies share one or more sensing optical fibers.
A plurality of H-shaped steel stand columns are arranged between the sound barrier screen bodies, and the sensing optical fibers are arranged in a penetrating mode through holes matched with the corresponding height positions of the H-shaped steel stand columns.
A design method of the sound barrier for realizing the real-time monitoring of the structural health state is characterized by comprising the following steps: the real-time monitoring of the health state of the sound barrier screen body structure is realized by one or two or more of the following modes:
arranging a reference optical fiber at the bottom end of the sound barrier screen body, horizontally arranging a sensing optical fiber at the middle line position of the sound barrier screen body, and acquiring a strain signal by using the optical fiber to judge whether the sound barrier screen body is broken or the material is fatigued and needs to be replaced;
arranging a reference optical fiber at the bottom end of the sound barrier screen body, arranging a sensing optical fiber penetrating through the sound barrier screen bodies at the highest position of the sound barrier screen bodies, collecting strain signals by using the optical fiber, detecting the inclination state of the sound barrier screen bodies when the sound barrier screen bodies are influenced by loads, and judging the health state of the upright post structure of the sound barrier screen body;
the method comprises the steps that a reference optical fiber is arranged at the bottom of a sound barrier body, a plurality of sensing optical fibers penetrating through the sound barrier body are arranged at the same height position of a plurality of sound barrier bodies, strain signals are collected through the optical fibers, and the structural fault condition of the plurality of sound barrier bodies is detected.
The invention has the advantages that: on the basis of keeping the acoustic performance and the mechanical performance of the sound barrier, the real-time monitoring of the health state of the sound barrier structure is realized; the monitoring of the structural health degree of a single sound barrier screen body is realized, and the monitoring of the structural health degree of a combined structure of a plurality of sound barrier screen bodies within a certain length range can be realized simultaneously; the monitoring items are various, so that the structural health state of the sound barrier can be effectively and comprehensively evaluated; the position of the sound barrier fault can be positioned, so that the follow-up maintenance work is convenient to carry out; simple structure is reasonable, and convenient to use realizes becoming more meticulous, intelligent management, is suitable for the popularization.
Drawings
FIG. 1 is a schematic diagram of an application structure of the present invention;
FIG. 2 is a schematic diagram of the monitoring of the present invention;
FIG. 3 is a schematic structural view of a single mode optical fiber according to the present invention;
FIG. 4 is a schematic structural view of a transparent sound-insulating panel according to the present invention;
FIG. 5 is a schematic structural view of a metal sound barrier unit plate according to the present invention;
FIG. 6 is a block diagram of one arrangement of the present invention;
fig. 7 is a view showing an arrangement structure of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-7, the labels 1-18 are respectively shown as: the acoustic barrier screen comprises a sound barrier screen body 1, a sensing optical fiber 2, a reference optical fiber 3, an end mirror 4, an H-shaped steel upright post 5, a coupler 6, a light source 7, a demodulator 8, an external power supply lead 9, a retaining wall 10, a single-mode optical fiber 11, a sensing optical fiber end mirror 12, a reference optical fiber end mirror 13, an optical fiber connector 14, light-transmitting glass 15, decorative stripes 16, a perforated panel 17 and a fiber protective layer 18.
Example (b): as shown in fig. 1, the sound barrier for implementing real-time monitoring of the structural health state in the present embodiment includes a sound barrier screen body 1, and the sound barrier screen body 1 plays a role in absorbing and insulating sound. The bottom of the sound barrier screen body 1 is anchored on the retaining wall 10, the periphery of the sound barrier screen body 1 and the adjacent sound barrier screen bodies 1 are provided with H-shaped steel upright posts 5, and the H-shaped steel upright posts 5 are used for supporting the sound barrier screen body 1.
As shown in fig. 1 and fig. 3, three single mode fibers 11 are embedded in the sound barrier screen 1, and the three single mode fibers include reference fibers 3 disposed at the bottom of the sound barrier screen 1 and at the top of the retaining wall 10, and two sensing fibers 2 disposed in the middle of the sound barrier screen 1, and the two sensing fibers 2 and the reference fibers 3 are both disposed in an extending manner along the horizontal direction of the sound barrier screen 1 and are disposed at equal intervals. One end of each single-mode fiber 11 (including the sensing fiber 2 and the reference fiber 3) is provided with an end mirror 4, the other end is provided with a fiber connector 14, and the sensing fiber 2 and the reference fiber 3 form a michelson interference type fiber sensor.
The two sensing fibers 2 and the one reference fiber 3 are connected to a coupler 6 through respective fiber connectors 14, the coupler 6 connects the light source 7 and the demodulator 8, and a lens 12 is disposed on an optical path between the light source 7 and the coupler 6. In use, as shown in fig. 2, the light source 7 may be a laser generator, which emits laser light into the coupler 6, and the coupler 6 splits the laser light into a plurality of light beams with equal intensity, and the number of split light beams is determined by the number of sensing fibers 2 and reference fibers 3 connected to the coupler 6. The light beams obtained by beam splitting respectively enter the sensing optical fibers 2 and the reference optical fibers 3 one by one; the light beams in the sensing optical fiber 2 and the reference optical fiber 3 are respectively reflected by a sensing optical fiber end mirror 12 and a reference optical fiber end mirror 13 at the respective tail ends and then return to the coupler 6 through the optical fibers. The reference beam returned from the reference fiber 3 is split in the coupler 6, the split reference beam and the sensing beams returned from different sensing fibers 2 are respectively combined to form interference light, a plurality of interference light beams are respectively sent to the demodulator 8 and the light intensity change is detected by the demodulator 8, the cosine relationship is formed between the light intensity change and the strain change received by the sensing fibers 2, and the strain change is quantitatively detected by the light intensity.
When a train passes through the sound barrier, for example, the pneumatic load causes the sound barrier screen body 1 to be strained, the sensing optical fiber 2 embedded in the sound barrier screen body 1 is also strained accordingly, due to the elasto-optical effect, the refractive index in the sensing optical fiber 2 changes, so that the optical path difference between the optical path of the sensing optical fiber 2 and the optical path difference between the optical path of the reference optical fiber 3 changes, and the change of the light intensity of the interference fringes can be detected by the demodulator 8. As shown in fig. 1, in the present embodiment, two sensing fibers 2 with different heights are embedded in the sound barrier 1, and the sensing beams of the two sensing fibers 2 are respectively combined with the reference beam to form two beams of interference light, so that when the two beams of interference light are respectively detected by the demodulator 8, which fiber in the sensing fibers 2 generates an optical path difference due to strain, and further represents that the sound barrier 1 at the position where the sensing fiber 2 is embedded is strained, thereby achieving positioning.
In this embodiment, as shown in the optical path discovery shown in the arrow direction in fig. 2, one reference fiber 3 may be used with n sensing fibers 2, each sensing fiber 2 has the same structure and has a sensing fiber end mirror 12, and the sensing beams reflected by the sensing fiber end mirrors 2 are combined with the reference beam of the reference fiber 3.
In this embodiment, during design, different monitoring items can be implemented in different light arrangement modes, so as to perform comprehensive monitoring and further evaluation on the structural health status of the sound barrier screen body 1, and the specific design method includes the following modes:
as shown in fig. 1, by disposing the reference fiber 3 at the bottom end of the sound barrier screen 1 (the top end of the retaining wall 10), the reference fiber 3 disposed at this position is not affected by the strain of the sound barrier screen 1, and thus a stable reference beam can be provided. The sensing optical fiber 2 is horizontally arranged at the center line position of the sound barrier screen body 1, strain signals are collected by the sensing optical fiber 2 and the reference optical fiber 3, and whether the sound barrier screen body 1 is broken or the material is fatigued and needs to be replaced is judged, so that the effective monitoring of the single sound barrier screen body 1 is realized.
As shown in fig. 6, a reference fiber 3 is also disposed at the bottom end of the sound barrier 1, the length of the reference fiber 3 may be determined by disposing a sensing fiber 2 penetrating through the sound barrier 1 at the highest position of the sound barrier 1, collecting a strain signal by using the sensing fiber 2, and detecting the inclination state of the sound barrier 1 when being affected by a load, thereby determining the structural health state of the H-shaped steel column 5 of the sound barrier 1.
As shown in fig. 7, a reference optical fiber 3 is also arranged at the bottom of the sound barrier body 1, and a plurality of sensing optical fibers 2 penetrating through the sound barrier bodies 1 are arranged at the same height position of the plurality of sound barrier bodies 1, that is, a plurality of sensing optical fibers 2 share one reference optical fiber 3. At this time, the sensing optical fiber 2 is used to collect a strain signal, and a structural failure condition of a plurality of sound barrier screens 1, for example, a failure condition such as whether each sound barrier screen in the whole section has dislocation or shedding, etc., if the sound barrier screen is shed from the H-shaped steel upright post 5, the deformation condition of the whole section of sensing optical fiber 2 is changed, and then the strain signal is detected.
In the embodiment, in specific implementation: the sound barrier screen 1 with the sensing fiber 2 is manufactured in a factory and a certain length of pipeline is left on one side of the sound barrier screen 1 for field connection installation.
For the transparent glass screen body, as shown in fig. 4, during the production process, the single mode optical fiber 11 (sensing optical fiber 2) is embedded in the adhesive layer of the transparent glass 15 on both sides. Meanwhile, the decorative strips 16 can be arranged at equal intervals, so that the functions of beauty and bird strike prevention are achieved. For organic light-transmitting material screens such as acrylic and the like, a hollow tube is embedded in advance during production of the light-transmitting material, the hollow tube is used for penetrating a single-mode optical fiber 11 at the later stage, glue is injected into the hollow tube to ensure that the single-mode optical fiber 11 is integrally connected with the sound barrier screen 1 in a sealing manner, strain change is effectively sensed, and monitoring precision is ensured. Meanwhile, the transparent glass 15 or the acrylic plate is adopted to mainly block direct noise, and the single-mode optical fiber 11 is embedded in a manner of a glue clamping layer or a pre-embedded hollow pipe, so that the sound insulation performance of the material is not influenced.
As shown in fig. 5, the metal sound barrier cell plate is formed by combining a perforated face plate, a sound absorbing material, a support plate, a back plate, and the like. The sensing fibers 2 may be pre-attached to the backside of the perforated face plate 17 before assembly and then covered with a fiber material 18 to ensure that the sensing fibers 2 are attached tightly. The sensing optical fiber 2 is pasted on the back side of the perforated panel 17, the panel material is uniformly perforated, the aperture is 5mm, the aperture ratio is 35%, so that sound waves can enter the screen body and be absorbed by the sound absorption material inside, and the purpose of perforating is to reduce the reflected sound of the sound waves. The sensing optical fiber 2 avoids the open hole area when being applied, and the acoustic performance of the sensing optical fiber is not influenced.
The light intensity data of each interference fringe measured by the demodulator 8 can be transmitted to the cloud server through the data transmission unit, and after data storage, calculation and analysis, the light intensity data is compared with the sound barrier health degree evaluation indexes such as historical data, state judgment indexes and fault threshold values, so that the structural health state of the sound barrier screen body 1 is judged. When the structural health state of the sound barrier screen body 1 is judged to be not good enough, maintenance information including the screen body judgment fault state, the fault screen body geographical position information and the like is sent to the operation and maintenance part, and the maintenance is convenient.
During field installation, the light source 7, the coupler 6 and the demodulator 8 are installed in the grooves of the side frames of the H-shaped steel upright post 5 and the sound barrier body 1, so that smooth installation of equipment is guaranteed. The sensing optical fiber 2 in the sound barrier screen body 1 is connected with the equipment through an optical fiber connector 14 and a fixed buckle. Reference fiber 3 is installed at barricade 10 top, and the position between two H shaped steel stands 5, reference fiber 3 interval certain distance is fixed with fixed buckle, avoids warping, and the outward appearance is covered with the arc safety cover in order to protect it. The power supply of each electrical device in this embodiment can be connected to an external power supply or a solar panel through the external power supply lead 9, so as to supply power.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.
Claims (6)
1. The utility model provides a realize sound barrier of structure health condition real-time supervision, includes the sound barrier screen body, its characterized in that: the utility model discloses a sound barrier screen, including sound barrier screen, coupler, sound barrier screen is internal to be buried underground two or more than two single mode fiber, two single mode fiber constitutes jointly and buries underground the internal Michelson interference type fiber sensor of sound barrier screen, single mode fiber's one end is provided with the end mirror, and the other end is connected to the coupler, the coupler is connected with light source and demodulator, the light source warp the coupler to end mirror transmission laser, laser passes through behind the reflection of end mirror the coupler extremely the demodulator.
2. The sound barrier for real-time monitoring of structural health status according to claim 1, wherein: including a plurality of the sound barrier screen body, it is a plurality of bury respectively in the sound barrier screen body single mode fiber, one of them single mode fiber arrange in the tip of the sound barrier screen body is as reference fiber, and remaining single mode fiber arranges as sensing fiber and follows the direction of height uniform spacing of the sound barrier screen body is buried underground.
3. The sound barrier for real-time monitoring of structural health status according to claim 2, wherein: and a plurality of sensing optical fibers in the sound barrier screen bodies share one reference optical fiber.
4. The sound barrier for realizing the real-time monitoring of the health state of the structure according to claim 2, wherein: the sensing optical fibers in the sound barrier screen bodies are designed to be through, namely one or more sensing optical fibers are arranged in the sound barrier screen bodies in a penetrating mode, so that the sound barrier screen bodies share one or more sensing optical fibers.
5. The sound barrier for real-time monitoring of structural health status according to claim 4, wherein: a plurality of H-shaped steel stand columns are arranged between the sound barrier screen bodies, and the sensing optical fibers are arranged in a penetrating mode through holes matched with the corresponding height positions of the H-shaped steel stand columns.
6. A design method of sound barrier for realizing real-time monitoring of structural health status related to any one of claims 1-5, characterized by: the real-time monitoring of the health state of the sound barrier screen body structure is realized by one or two or more of the following modes:
arranging a reference optical fiber at the bottom end of the sound barrier screen body, horizontally arranging a sensing optical fiber at the middle line position of the sound barrier screen body, and acquiring a strain signal by using the optical fiber to judge whether the sound barrier screen body is broken or the material is fatigued and needs to be replaced;
arranging a reference optical fiber at the bottom end of the sound barrier screen body, arranging a sensing optical fiber penetrating through the sound barrier screen bodies at the highest position of the sound barrier screen bodies, collecting strain signals by using the optical fiber, detecting the inclination state of the sound barrier screen bodies when the sound barrier screen bodies are influenced by loads, and judging the health state of the upright post structure of the sound barrier screen body;
the method comprises the steps that a reference optical fiber is arranged at the bottom of a sound barrier body, a plurality of sensing optical fibers penetrating through the sound barrier body are arranged at the same height position of a plurality of sound barrier bodies, strain signals are collected through the optical fibers, and the structural fault condition of the plurality of sound barrier bodies is detected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211170260.4A CN115522490A (en) | 2022-09-26 | 2022-09-26 | Sound barrier for realizing real-time monitoring of structural health state and design method thereof |
| PCT/CN2023/116928 WO2024066948A1 (en) | 2022-09-26 | 2023-09-05 | Noise barrier realizing real-time monitoring of structural state of health, and design method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211170260.4A CN115522490A (en) | 2022-09-26 | 2022-09-26 | Sound barrier for realizing real-time monitoring of structural health state and design method thereof |
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| CN115522490A true CN115522490A (en) | 2022-12-27 |
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| CN202211170260.4A Pending CN115522490A (en) | 2022-09-26 | 2022-09-26 | Sound barrier for realizing real-time monitoring of structural health state and design method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN115522490A (en) |
| WO (1) | WO2024066948A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117031531A (en) * | 2023-08-04 | 2023-11-10 | 华东交通大学 | Sound barrier collapse prevention monitoring method and monitoring device thereof |
| CN117113520A (en) * | 2023-10-25 | 2023-11-24 | 国网江西省电力有限公司电力科学研究院 | Displacement field loading-based displacement field loading method and system for detecting sound barrier of transformer substation |
| WO2024066948A1 (en) * | 2022-09-26 | 2024-04-04 | 中铁上海设计院集团有限公司 | Noise barrier realizing real-time monitoring of structural state of health, and design method therefor |
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| JP2002148110A (en) * | 2000-11-14 | 2002-05-22 | Oki Electric Ind Co Ltd | Optical fiber sensor |
| CN100541186C (en) * | 2007-04-23 | 2009-09-16 | 哈尔滨工业大学 | The interferometric optical fiber sensor that is used for composite material health monitoring |
| CN202485639U (en) * | 2012-03-15 | 2012-10-10 | 中国特种设备检测研究院 | Spherical tank health monitoring system based on fiber bragg grating (FBG) sensor technology |
| CN103411660B (en) * | 2013-08-29 | 2014-12-03 | 山东省科学院激光研究所 | Optical fiber distributed type sound wave monitor system |
| CN104210512B (en) * | 2014-09-17 | 2016-08-17 | 南京大学 | A kind of monitor the method that H steel draw-in groove in high-speed rail sound barrier loosens |
| CN104807402B (en) * | 2015-03-27 | 2017-07-14 | 北京交通大学 | Utilize the sound barrier state measuring device of optical means, system and method |
| CN105067360B (en) * | 2015-07-28 | 2019-06-18 | 中国运载火箭技术研究院 | A kind of composite material structure health monitoring system based on pre-buried fiber grating |
| CN105158256B (en) * | 2015-09-30 | 2017-08-29 | 山东大学 | A kind of online health monitor method of composite |
| CN108692807A (en) * | 2018-04-27 | 2018-10-23 | 吉林大学 | A kind of optical fiber distributed type acoustic monitoring system |
| CN211042472U (en) * | 2019-12-31 | 2020-07-17 | 杭州光传科技有限公司 | Optical fiber vibration sensor |
| CN115522490A (en) * | 2022-09-26 | 2022-12-27 | 中铁上海设计院集团有限公司 | Sound barrier for realizing real-time monitoring of structural health state and design method thereof |
| CN218059988U (en) * | 2022-09-26 | 2022-12-16 | 中铁上海设计院集团有限公司 | Sound insulation board with structure health degree self-monitoring function |
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2022
- 2022-09-26 CN CN202211170260.4A patent/CN115522490A/en active Pending
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2023
- 2023-09-05 WO PCT/CN2023/116928 patent/WO2024066948A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066948A1 (en) * | 2022-09-26 | 2024-04-04 | 中铁上海设计院集团有限公司 | Noise barrier realizing real-time monitoring of structural state of health, and design method therefor |
| CN117031531A (en) * | 2023-08-04 | 2023-11-10 | 华东交通大学 | Sound barrier collapse prevention monitoring method and monitoring device thereof |
| CN117031531B (en) * | 2023-08-04 | 2024-04-26 | 华东交通大学 | Sound barrier collapse prevention monitoring method and monitoring device thereof |
| CN117113520A (en) * | 2023-10-25 | 2023-11-24 | 国网江西省电力有限公司电力科学研究院 | Displacement field loading-based displacement field loading method and system for detecting sound barrier of transformer substation |
| CN117113520B (en) * | 2023-10-25 | 2024-02-06 | 国网江西省电力有限公司电力科学研究院 | Displacement field loading-based transformer substation sound barrier detection method and system |
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| Publication number | Publication date |
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| WO2024066948A1 (en) | 2024-04-04 |
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