CN111473810A - Track board based on distributed optical fiber monitoring - Google Patents
Track board based on distributed optical fiber monitoring Download PDFInfo
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- CN111473810A CN111473810A CN202010320816.8A CN202010320816A CN111473810A CN 111473810 A CN111473810 A CN 111473810A CN 202010320816 A CN202010320816 A CN 202010320816A CN 111473810 A CN111473810 A CN 111473810A
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- track
- optical fiber
- track slab
- distributed optical
- slab
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 121
- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000007405 data analysis Methods 0.000 abstract description 4
- 238000013480 data collection Methods 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a track slab based on distributed optical fiber monitoring. According to the track slab, the plurality of distributed optical fibers are buried in the track slab, the two ends of each distributed optical fiber are provided with the optical fiber connectors, and the optical fiber connectors are connected with the measuring equipment to form a measuring loop when in use, so that the data such as stress, strain, temperature, cracks and the like in the track slab can be measured, the transmission efficiency of the optical fibers can be utilized, various parameters of the track slab during operation can be collected in real time, the service state of the track slab can be monitored in real time for an operation department during operation through big data analysis, guidance can be provided for maintenance of the track slab in the whole life cycle, and the information of the track slab during operation is enabled to be possible.
Description
Technical Field
The invention relates to the field of rail engineering, in particular to a rail plate based on distributed optical fiber monitoring.
Background
Track engineering provides the engineering structure of direct support and direction for the train, and its stability, ride comfort directly influence the safety and the comfort of train, and consequently, the monitoring of track engineering structure is very significant and worth. The track engineering structure is generally divided into two categories of a ballast track and a ballastless track. The ballast track generally comprises a steel rail, a fastener system for fastening and fixing the steel rail, a sleeper for supporting and fixing the fastener and a ballast track bed structure for supporting and wrapping the sleeper from top to bottom. The ballastless track generally comprises lower structures such as steel rails, fastener systems, sleepers, reinforced concrete track bed boards, bases and the like from top to bottom.
The ballast bed is an important component part of both the ballast track and the ballastless track, and provides functions of supporting the track panel and stabilizing the track panel. For a ballastless track, the track slab has two forms of a cast-in-place track slab and a prefabricated track slab. The existing track slabs (track bed slabs) are all of reinforced concrete structures, as the track bed needs to bear repeated impact dynamic loads transmitted from the upper part, the track bed structure generates deformation and stress when a train passes through, the durability, the stress and the deformation of the track bed structure bearing fatigue loads are key parameters worthy of attention in the operation process, and the track bed slab structure has important functions of evaluating whether the track bed structure is in a normal working state and judging the development trend, and has important guiding significance for keeping the safety of railway operation particularly in the construction and operation of high-speed railways. At present, no method or measure is adopted for collecting actual operation data of a ballast bed structure of the ballastless track, and data recording, analysis and evaluation are lacked for the application of the ballastless track structure in the whole life cycle.
Disclosure of Invention
The invention aims to: aiming at the problems that no method or measure is adopted to collect actual operation data of a ballast bed structure at present, and data recording, analysis and evaluation are lacked in the application of the whole service life cycle of the ballastless track structure, the track slab based on distributed optical fiber monitoring is provided, the distributed optical fiber is arranged in the track slab, the track slab has the capability of measuring the internal stress, strain, temperature and cracks of the track slab in real time, the operation data collection capability of the ballastless track structure can be greatly improved, and great help is provided for realizing the informatization monitoring, the service life evaluation and the operation maintenance guidance of a railway track system.
In order to achieve the purpose, the invention adopts the technical scheme that:
a plurality of distributed optical fibers are buried in the track plate, and optical fiber joints are arranged at two ends of each distributed optical fiber.
According to the track slab, the plurality of distributed optical fibers are buried in the track slab, the two ends of each distributed optical fiber are provided with the optical fiber connectors, and the optical fiber connectors are connected with the measuring equipment to form a measuring loop when in use, so that the data such as stress, strain, temperature, cracks and the like in the track slab can be measured, the transmission efficiency of the optical fibers can be utilized, various parameters of the track slab during operation can be collected in real time, the service state of the track slab can be monitored in real time for an operation department during operation through big data analysis, guidance can be provided for maintenance of the track slab in the whole life cycle, and the information of the track slab during operation is enabled to be possible.
As a preferable aspect of the present invention, the distributed optical fiber is arranged longitudinally or transversely along the rail plate. The distributed optical fibers are arranged in the track slab in various ways, so that data collection can be carried out on multiple positions and multiple directions of the track slab.
In a preferred embodiment of the present invention, the optical fiber splices are buried at both ends or both sides of the track plate.
In a preferred embodiment of the present invention, the rail plate is provided with a rail bearing platform for fixing the fastener system.
In a preferred embodiment of the invention, the rail support is in the form of a rail support without a shoulder of the fastener or in the form of a rail support with a shoulder of the fastener.
As a preferable aspect of the present invention, the track slab is a track slab without steel bars, or a non-prestressed track slab with ordinary steel bars, or a prestressed track slab with prestressed steel bars, or a track slab structure with stressed steel bars of other forms or materials.
As a preferable aspect of the present invention, the track slab is a prefabricated track slab or a cast-in-place track slab.
As a preferable scheme of the invention, all the distributed optical fibers are distributed in one layer or a plurality of layers in the track slab.
A track structure comprises a plurality of track plates paved along a line, distributed optical fibers in adjacent track plates are correspondingly connected in series through connecting optical fibers, and the connecting optical fibers are connected with optical fiber connectors at the ends of the distributed optical fibers.
According to the track structure, the distributed optical fibers in the adjacent track plates are correspondingly connected in series through the connecting optical fibers, so that a closed-loop track plate distributed optical fiber monitoring circuit laid along a line can be formed, data collection of internal stress, strain, temperature, cracks and the like of the track plates can be conveniently carried out in real time, the operation data collection capacity of the ballastless track structure can be greatly improved, and great help is provided for information monitoring, service life evaluation and operation maintenance guidance of a railway track system.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the track slab, the plurality of distributed optical fibers are buried in the track slab, the two ends of each distributed optical fiber are provided with the optical fiber connectors, and the optical fiber connectors are connected with measuring equipment to form a measuring loop when in use, so that data such as stress, strain, temperature, cracks and the like in the track slab can be measured, the transmission efficiency of the optical fibers is utilized, various parameters of the track slab during operation can be collected in real time, and through big data analysis, the service state of the track slab can be monitored in real time for an operation department during operation, guidance can be provided for maintenance of the track slab in the whole life cycle, and meanwhile, the information of the track slab during operation is made possible;
2. according to the track structure, the distributed optical fibers in the adjacent track plates are correspondingly connected in series through the connecting optical fibers, so that a closed-loop track plate distributed optical fiber monitoring circuit laid along a line can be formed, data collection of internal stress, strain, temperature, cracks and the like of the track plates can be conveniently carried out in real time, the operation data collection capacity of the ballastless track structure can be greatly improved, and great help is provided for information monitoring, service life evaluation and operation maintenance guidance of a railway track system.
Drawings
Fig. 1 is a schematic plan view of a track slab based on distributed optical fiber monitoring according to the present invention.
Fig. 2 is a schematic elevation view of a track slab based on distributed optical fiber monitoring according to the present invention.
Fig. 3 is a schematic cross-sectional view of the track slab based on distributed optical fiber monitoring in the present invention.
Fig. 4 is a schematic diagram of the connection of the distributed optical fibers in adjacent track slabs according to the present invention.
The labels in the figure are: 1-track plate, 2-distributed optical fiber, 3-optical fiber joint, 4-track bearing platform and 5-connecting optical fiber.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment provides a track slab based on distributed optical fiber monitoring;
as shown in fig. 1 to fig. 3, in the track slab based on distributed optical fiber monitoring in this embodiment, a plurality of distributed optical fibers 2 are embedded in the track slab 1, and optical fiber joints 3 are disposed at two ends of each distributed optical fiber 2.
According to the track slab, the plurality of distributed optical fibers are buried in the track slab, the two ends of each distributed optical fiber are provided with the optical fiber connectors, and the optical fiber connectors are connected with the measuring equipment to form a measuring loop when in use, so that the data such as stress, strain, temperature, cracks and the like in the track slab can be measured, the transmission efficiency of the optical fibers can be utilized, various parameters of the track slab during operation can be collected in real time, the service state of the track slab can be monitored in real time for an operation department during operation through big data analysis, guidance can be provided for maintenance of the track slab in the whole life cycle, and the information of the track slab during operation is enabled to be possible.
In this embodiment, the distributed optical fibers 2 are arranged longitudinally along the track plate 1. The distributed optical fibers are arranged in the track slab in various ways, so that data collection can be carried out on multiple positions and multiple directions of the track slab. Of course, the distributed optical fibers may be arranged laterally along the track plate, or a portion of the distributed optical fibers may be arranged longitudinally along the track plate and a portion may be arranged laterally along the track plate. The distributed optical fibers are distributed on the mainly stressed section position and the easily cracked part of the track slab, and the types of the distributed optical fibers can be determined according to the functional requirements of measured data, such as optical fibers for measuring temperature, optical fibers for measuring deformation, optical fibers for measuring stress and the like, but are not limited to the types.
In this embodiment, the optical fiber connectors 3 are embedded at two ends or two sides of the track slab 1, that is, two ends of the distributed optical fiber 2 are respectively connected to the optical fiber connectors 3 and embedded in the track slab 1.
In this embodiment, the track slab 1 is provided with a rail bearing platform 4 for fixing the fastener system, and the rail bearing platform is only expressed in a form of a rail bearing platform without a fastener shoulder, a rail bearing platform with a fastener shoulder, or a rail bearing platform without a rail bearing platform above the track slab.
In this embodiment, the track slab 1 may be a track slab without configured steel bars, or a non-prestressed track slab configured with ordinary steel bars, or a prestressed track slab configured with prestressed steel bars, or a track slab structure configured with stressed steel bars in other forms or materials.
In this embodiment, the track slab 1 is divided into two forms, i.e., a prefabricated track slab or a cast-in-place track slab, according to the production and preparation method thereof.
In this embodiment, all the distributed optical fibers 2 are distributed in one or more layers in the track plate 1. The distribution condition of the distributed optical fibers in the track slab, the number of the distributed optical fibers, and the like are determined according to specific monitoring function requirements, and are not limited to the distribution and the number shown in the figure.
Example 2
As shown in fig. 4, a track structure includes a plurality of track slabs 1 as described in embodiment 1 laid along a route, distributed optical fibers 2 in adjacent track slabs 1 are correspondingly connected in series through connecting optical fibers 5, and the connecting optical fibers 5 are connected with optical fiber splices 3 at ends of the distributed optical fibers 2.
According to the track structure, the distributed optical fibers in the adjacent track plates are correspondingly connected in series through the connecting optical fibers, so that a closed-loop track plate distributed optical fiber monitoring circuit laid along a line can be formed, data collection of internal stress, strain, temperature, cracks and the like of the track plates can be conveniently carried out in real time, the operation data collection capacity of the ballastless track structure can be greatly improved, and great help is provided for information monitoring, service life evaluation and operation maintenance guidance of a railway track system.
The construction process when the prefabricated track slab is adopted is as follows: firstly, producing distributed optical fibers 2 and optical fiber connectors 3 at two ends of the distributed optical fibers 2, assembling the distributed optical fibers 2 and the optical fiber connectors 3 at two ends into a component, when prefabricating a track slab in a factory, embedding the distributed optical fiber components in the prefabricated track slab accurately according to the positions of the distributed optical fibers, when laying a track structure on the site, transferring the prefabricated track slab to the site, installing the track slab after fine adjustment, and after finishing the installation of all track slabs on a line, connecting the corresponding distributed optical fibers 2 in the adjacent track slabs 1 in series through connecting optical fibers 5 to form a closed-loop track slab distributed optical fiber monitoring loop laid along the line so as to collect data of the track slab.
The construction process when the track slab is poured is as follows: firstly, producing a distributed optical fiber 2 and optical fiber connectors 3 at two ends of the distributed optical fiber 2, assembling the distributed optical fiber 2 and the optical fiber connectors 3 at two ends into a component, and transferring the distributed optical fiber component to a construction site; the track slab distributed optical fiber monitoring system comprises a track slab template, distributed optical fiber assemblies, connecting optical fibers 5 and a track slab distributed optical fiber monitoring loop, wherein the track slab template is installed and steel bars are bound on a construction site according to design requirements, the distributed optical fiber assemblies are accurately installed at corresponding positions of a cast-in-place track slab according to the designed positions, the track slab structure is cast in place, after the cast-in-place structure of all track slabs on a line is constructed, the corresponding distributed optical fibers 2 in adjacent track slabs 1 are connected in series through the connecting optical fibers 5, and the track slab distributed optical fiber monitoring loop laid along the line in a.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The track slab based on distributed optical fiber monitoring is characterized in that a plurality of distributed optical fibers are buried in the track slab, and optical fiber connectors are arranged at two ends of each distributed optical fiber.
2. The track plate based on distributed optical fiber monitoring according to claim 1, wherein the distributed optical fiber is arranged longitudinally or transversely along the track plate.
3. The track slab based on distributed optical fiber monitoring according to claim 2, wherein the optical fiber connectors are buried at two ends or two sides of the track slab.
4. The track slab based on distributed optical fiber monitoring according to one of claims 1 to 3, wherein a rail bearing platform for fixing a fastener system is arranged on the track slab.
5. The track slab based on distributed optical fiber monitoring according to claim 4, wherein the rail bearing platform is in the form of a rail bearing platform without a fastener shoulder or in the form of a rail bearing platform with a fastener shoulder.
6. The track slab based on distributed optical fiber monitoring according to one of claims 1 to 3, wherein the track slab is a track slab without configured steel bars, or a non-prestressed track slab configured with common steel bars, or a prestressed track slab configured with prestressed steel bars, or a track slab structure configured with stress bars of other forms or materials.
7. The track slab based on distributed optical fiber monitoring according to claim 6, wherein the track slab is a prefabricated track slab or a cast-in-place track slab.
8. A track board based on distributed optical fiber monitoring according to any one of claims 1 to 3, wherein all the distributed optical fibers are distributed in one or more layers in the track board.
9. A track structure comprising a plurality of track slabs as claimed in claim 1 laid along a route, the distributed optical fibers in adjacent track slabs being correspondingly connected in series by connecting optical fibers connected to optical fiber splices at ends of the distributed optical fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010320816.8A CN111473810A (en) | 2020-04-22 | 2020-04-22 | Track board based on distributed optical fiber monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010320816.8A CN111473810A (en) | 2020-04-22 | 2020-04-22 | Track board based on distributed optical fiber monitoring |
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|---|---|
| CN111473810A true CN111473810A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010320816.8A Pending CN111473810A (en) | 2020-04-22 | 2020-04-22 | Track board based on distributed optical fiber monitoring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903137A (en) * | 2021-01-18 | 2021-06-04 | 沈阳建筑大学 | Intelligent monitoring system for ski-jump assisting slideway |
| CN114112103A (en) * | 2021-09-29 | 2022-03-01 | 中铁第四勘察设计院集团有限公司 | Plate-type ballastless track and all-line temperature field monitoring system and health monitoring method thereof |
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2020
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Cited By (3)
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| CN112903137A (en) * | 2021-01-18 | 2021-06-04 | 沈阳建筑大学 | Intelligent monitoring system for ski-jump assisting slideway |
| CN114112103A (en) * | 2021-09-29 | 2022-03-01 | 中铁第四勘察设计院集团有限公司 | Plate-type ballastless track and all-line temperature field monitoring system and health monitoring method thereof |
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Application publication date: 20200731 |