CN115127513B - Long-distance pavement structure settlement monitoring method based on combined distributed optical fiber sensing technology and parameter inversion analysis - Google Patents
Long-distance pavement structure settlement monitoring method based on combined distributed optical fiber sensing technology and parameter inversion analysis Download PDFInfo
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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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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- 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
- G01D5/32—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 with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
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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
- G01D5/32—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 with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
- G01D5/35374—Particular layout of the fiber
Abstract
The invention provides a long-distance pavement structure settlement monitoring method based on a combined distributed optical fiber sensing technology and parameter inversion analysis, and belongs to the technical field of intelligent health monitoring of structures. According to the rigidity or flexibility characteristics of each layer of structure of the pavement, respectively designing rigid or flexible packaging distributed optical fiber sensing devices matched with the cooperative deformation of the rigid or flexible packaging distributed optical fiber sensing devices, and realizing the temperature self-compensation of a single sensing device by embedding free distributed optical fibers in the packaging layers; arranging the designed packaging distributed optical fibers in layers of a pavement in a plane grid mode along criss-cross mode, and constructing an optical fiber sensing network monitoring system; the embedded optical fiber sensing network is used for monitoring information to sense the local deflection deformation of the pavement, the elastic foundation beam theory and the mathematical analysis method are combined to realize the inversion of the sedimentation parameters in stages, and simultaneously, the curved surface reconstruction algorithm is used for realizing the continuous monitoring of sedimentation in a full-scale range. The device and the analysis method provided by the invention provide a method with high measurement stability and accuracy for pavement settlement monitoring.
Description
Technical Field
The invention belongs to the field of intelligent health monitoring and detection of structures, and relates to an optical fiber sensing test method for monitoring settlement of a long-distance pavement structure.
Background
Highways are an important component in infrastructure, however, road surface subsidence is a potential hazard affecting driving safety. Many factors are involved in the settlement of the road surface, such as construction quality, running load, natural environment, etc. Road surface subsidence can be classified into uniform subsidence and non-uniform subsidence, and the hazard degree of non-uniform subsidence is larger in general cases. The road surface subsidence is mainly represented by road surface roughness or cracking, thereby causing a decrease in driving comfort. Therefore, the settlement of the long-distance pavement structure is monitored by adopting an effective means, the pavement deformation information is tracked and monitored for a long time, the service performance of the pavement is accurately estimated, the pavement maintenance strategy is guided to be drawn, and the method has important engineering significance.
Currently, roadbed settlement monitoring technologies include a settlement plate method, a settlement cup method, an electromagnetic layered settlement meter method, a hydraulic section settlement meter method, a horizontal inclinometer method and the like. The traditional roadbed settlement monitoring instrument is mainly used for point type monitoring, and has the defects of omission, large measurement error, low automation level, large workload and the like. The method is applied to long-distance pavement structure deformation monitoring by considering the remarkable advantages of high sensitivity, corrosion resistance, electromagnetic interference resistance, absolute measurement, small volume, light weight, easiness in network integration, large test scale and the like of the optical fiber sensing test technology.
Currently, a scholars monitor the settlement of a road base surface relative to a CFG (Cement fly-ash grade) pile or a raw soil base through a fiber bragg grating type displacement sensor; reacting the subgrade settlement condition through a sensing optical fiber zigzag layout form and a three-dimensional 3-time spline interpolation method of MATLAB language; measuring the settlement of the roadbed through the bending sensing characteristic of an MZ (Mach-Zehnder) double-core optical fiber sensor, so as to realize the monitoring of the settlement of the roadbed; and measuring settlement in the pavement layer by arranging distributed optical fibers at the top and the bottom of the pavement layer to measure the relative displacement of the distributed optical fibers. The method mainly calibrates pavement subsidence by measuring relative variation, ignores the influence of the variation of the reference object on the measurement result, and ignores the influence of the encapsulation layer embedded in the optical fiber on the measurement result in the research analysis, so that the test precision of the method is to be improved. In addition, the above-mentioned measuring method is to consider the road surface state in stages, but the actual situation is that the road surface is in working with local micro-damage state when many times, such as local micro-crack, pit or rut, etc. When the pavement is in different service states, the structural deformation states of the pavement are different, so that the corresponding settlement monitoring method is needed to be considered according to conditions.
Therefore, the direct measurement method for monitoring the settlement of the long-distance pavement structure by considering the influence of the embedded optical fiber packaging layer and the joint parameter inversion analysis is provided, and the core of the direct measurement method is to design a rigid and flexible packaging distributed optical fiber sensor according to the rigidity or flexibility characteristics of the pavement structure respectively, and arrange the distributed optical fibers into a crisscrossed net structure, so that an optical fiber sensing network for monitoring the longitudinal and transverse deflection deformation of the pavement structure is constructed. Based on longitudinal and transverse distributed deformation information measured by an optical fiber sensing network, the settlement parameter inversion on the horizontal section of the pavement structure is realized by combining an elastic foundation beam theory when the pavement is in a nondestructive state, and the settlement parameter inversion on the horizontal section of the pavement structure is realized by adopting a mathematical analysis method when the pavement is in service with a damaged state (such as a local crack, a pit or a rut, etc.), so that the real-time output of the deformation information of the horizontal section of the pavement structure in different states is established, and the long-term continuous and effective monitoring of the pavement settlement information is finally realized.
Disclosure of Invention
The invention aims to provide a long-distance pavement structure settlement monitoring method combining a distributed optical fiber sensing technology and parameter inversion analysis, which can respectively design matched distributed optical fiber sensing devices according to structural characteristics of each layer of a pavement, so that the problems of poor long-term continuous measurement stability, accuracy and durability of embedded optical fiber sensing devices are solved, meanwhile, the problem of low measurement precision caused by the existing relative measurement method is solved by directly measuring deflection deformation in a pavement horizontal plane in a mode that optical fiber sensing networks are respectively paved on each layer, and meanwhile, the measurement precision is further improved by adopting parameter inversion based on the development of an elastic foundation beam theory (pavement is in a nondestructive state) and a mathematical analysis method (pavement is in a lossy state).
The technical scheme of the invention is as follows:
a long-distance pavement structure settlement monitoring method combining a distributed optical fiber sensing technology and parameter inversion analysis comprises the following implementation steps: according to the structural characteristics of each layer of pavement, such as an asphalt surface layer, a flexible packaging distributed optical fiber sensing device matched with the cooperative deformation of the flexible packaging distributed optical fiber sensing device, such as a cement stabilized macadam base layer, is designed, a rigid packaging distributed optical fiber sensing device matched with the cooperative deformation of the flexible packaging distributed optical fiber sensing device is designed, and meanwhile, the influence of the existence of a packaging layer on pavement deformation is considered based on a strain transfer theory; according to the subsidence characteristics of the pavement, vertically and horizontally paving crisscrossed distributed optical fiber sensing devices along each layer of the pavement, namely meshing the plane of the pavement layer, and transmitting deflection deformation signals of the horizontal plane of each layer of the pavement to the optical fiber sensing network of the layer; finally, when the local position in the road surface horizontal plane generates deflection deformation, the inversion of the longitudinal and transverse sedimentation parameters of the road surface can be realized by combining an elastic foundation beam theory when the road surface is in a nondestructive state according to the monitoring information of the built-in optical fiber sensing network, and the inversion of the longitudinal and transverse sedimentation parameters of the road surface is realized by introducing a mathematical analysis method according to the geometric relationship between the optical fiber measurement parameters and the deflection deformation parameters of the road surface when the road surface is in micro-damage service, and meanwhile, the monitoring of the sedimentation in the whole scale range in the road surface horizontal plane is realized by utilizing a curved surface grid reconstruction algorithm.
According to the optical fiber sensing test method for monitoring the settlement of the long-distance pavement structure, as the same as adding a layer of intelligent sensing network in the long-distance pavement structure to cooperatively deform with the pavement structure, the settlement parameter inversion is realized based on the elastic foundation beam theory according to the continuous monitoring of the pavement strain information of the optical fiber sensing network, and meanwhile, the settlement condition of the long-distance pavement structure is accurately output by assisting with a curved surface reconstruction algorithm.
The flexible packaging distributed optical fiber sensor matched with the asphalt surface layer to cooperatively deform can adopt an armor wire embedded with silicone rubber as a packaging protection layer, and the influence of the packaging layer on the measurement deformation can be corrected through a calibration experiment or a strain transfer theory. Considering the temperature field measurement situation of the layer, a white sleeve with a built-in free distributed optical fiber can be embedded in the armor wires, and only the temperature is measured. This process may enable such flexible package distributed fiber optic sensors to have temperature self-compensating features.
The rigid packaging distributed optical fiber sensor matched with the cooperative deformation of the cement temperature macadam base layer can adopt glass fiber reinforced epoxy resin as a packaging protection layer, and the influence of the packaging layer on the measurement deformation is corrected through a calibration experiment or a strain transfer theory. Similarly, the temperature self-compensation in a single packaged optical fiber device can be realized by adopting a white sleeve mode of embedding the free distributed optical fibers.
The curved surface grid reconstruction algorithm is to reconstruct the deformation information of the whole curved surface by using the discrete point deformation information measured in the curved surface through a curved surface fitting algorithm, so that the monitoring of the deformation information of the curved surface is realized.
The settlement parameter inversion based on the elastic foundation beam theory is to simplify the road surface structure in a nondestructive state into an elastic foundation beam, and the road surface settlement is obtained by introducing strain information measured by a distributed optical fiber sensing network and inputting the strain information into a deflection calculation formula.
The sedimentation parameter inversion based on the mathematical analysis method is to establish a quantitative relation between deformation information measured by a distributed optical fiber and pavement structure deflection deformation parameters with micro damage states by utilizing a geometric relation, so as to obtain pavement sedimentation quantity.
The invention has the following effects and benefits: the method provides a direct measurement method based on distributed optical fiber actual measurement data and parameter inversion analysis for monitoring the settlement of the long-distance pavement structure; the problems of difficult real-time accurate monitoring of pavement structure settlement, low survival rate, poor measurement stability and durability of the embedded distributed optical fiber sensor, low measurement identification precision and the like in the monitoring field are solved; the continuous accurate measurement of the settlement of the long-distance pavement structure is realized, and an effective early warning mechanism is provided for settlement monitoring and damage estimation of the pavement structure.
Drawings
FIG. 1 is a detailed construction diagram of a flexible package distributed fiber optic sensor device.
Fig. 2 is a schematic diagram of an optical fiber sensing network for monitoring settlement of an asphalt surface layer of a long-distance pavement.
FIG. 3 is a longitudinal section view of a long distance pavement structure with an embedded packaged optical fiber sensing network.
In the figure: 1. a longitudinally distributed optical fiber; 2. a free-distributed optical fiber; 3. an armor sleeve; 4. bai Taoguan; 5. a filled silicone rubber; 6. a laterally distributed optical fiber; 7. an optical fiber jumper; 8. a distributed optical fiber demodulator; 9. a flexible asphalt surface layer; 10. a latex layer; 11. cement stabilized macadam foundation.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the following technical schemes (and accompanying drawings).
A method for monitoring sedimentation of long-distance pavement structures by combining distributed optical fiber sensing technology and parameter inversion analysis is described by taking sedimentation of a pavement surface layer of an asphalt pavement as an example. The detailed structure of the flexible package distributed optical fiber sensor device is shown in fig. 1; an optical fiber sensing network layout schematic diagram for monitoring the settlement of the asphalt surface layer of the long-distance pavement is shown in figure 2; a longitudinal section view of the long-distance pavement structure of the embedded packaged optical fiber sensing network is shown in figure 3.
The method for monitoring the settlement of the long-distance pavement structure by combining the distributed optical fiber sensing technology and the parameter inversion analysis comprises the following implementation modes:
firstly, according to the structural characteristics of a pavement, taking settlement monitoring of a flexible asphalt surface layer 9 as an example, designing an armor sleeve 3 to package a longitudinal distributed optical fiber 1, fixing the position of the longitudinal distributed optical fiber 1 in a mode of placing filled silicone rubber 5 on a pipe, thereby realizing flexible distributed packaging of the flexible asphalt surface layer 9, placing a white sleeve 4 embedded with a free distributed optical fiber 2 at the bottom of a pipe wall, and realizing temperature self-compensation of a single distributed optical fiber sensor; then, the transverse distributed optical fibers 6 are packaged by adopting the same method, and the packaged transverse distributed optical fibers are distributed into a crisscross net structure (as shown in figure 2), so that the measurement of transverse and transverse deflection information of the horizontal plane of the flexible asphalt surface layer 9 is covered; secondly, welding longitudinal and transverse outgoing optical fibers of the distributed optical fiber sensing network with an optical fiber jumper 7, connecting the optical fiber with a distributed optical fiber demodulator 8, and detecting the smoothness of a longitudinal and transverse optical path; finally, inversion of sedimentation parameters is realized according to the monitored strain information in combination with an elastic foundation beam theory (lossless) or a mathematical analysis method (lossy), and longitudinal and transverse sedimentation of the asphalt surface layer is monitored in combination with a curve reconstruction algorithm. When settlement monitoring is to be performed on each layer of the pavement, similar optical fiber sensing network monitoring systems are respectively arranged in the latex layer 10 and the cement stabilized macadam base layer 11 in fig. 3, and settlement of each layer at different moments is respectively measured. It should be noted that the packaging method of the distributed optical fiber sensor device will be different according to the rigidity and flexibility characteristics of the substrate to be tested. For the flexible latex layer 10, a thin diameter armor sleeve may be used to encapsulate the distributed optical fibers; for the rigid cement stabilized macadam base 11, a glass fiber reinforced epoxy resin may be used to encapsulate the distributed optical fibers.
Claims (1)
1. A long-distance pavement structure settlement monitoring method based on a combined distributed optical fiber sensing technology and parameter inversion analysis is characterized by comprising the following steps of: according to the road surface structural characteristics, the armor sleeve (3) is designed to encapsulate the longitudinal distributed optical fibers (1), and the positions of the longitudinal distributed optical fibers (1) are fixed in a mode of placing filled silicone rubber (5) on a pipe, so that the flexible distributed encapsulation of a flexible asphalt surface layer (9) is realized, and the white sleeve (4) embedded with the free distributed optical fibers (2) is placed at the bottom of the pipe wall, so that the temperature self-compensation of a single distributed optical fiber sensor is realized; then, the transverse distributed optical fibers (6) are packaged by adopting the same method, and the packaged transverse and transverse distributed optical fibers are distributed into a crisscrossed net structure, so that the measurement of the longitudinal and transverse deflection information of the horizontal plane of the flexible asphalt surface layer (9) is covered; secondly, welding longitudinal and transverse outgoing optical fibers of the distributed optical fiber sensing network with an optical fiber jumper wire (7), connecting the optical fiber with a distributed optical fiber demodulator (8), and detecting the smoothness of longitudinal and transverse optical paths; finally, according to the monitored strain information, inverting longitudinal and transverse settlement parameters of the pavement is realized by adopting an elastic foundation beam theory when the nondestructive state of the pavement is considered, inverting the settlement parameters by utilizing the geometrical relationship between optical fiber measurement parameters and pavement deflection deformation parameters is realized by introducing a mathematical analysis method when the pavement is considered to be damaged for service, and finally, monitoring longitudinal and transverse settlement of the asphalt pavement is realized by combining a curved surface grid reconstruction algorithm;
the settlement parameter inversion of the elastic foundation beam theory is to simplify the pavement structure in a nondestructive state into an elastic foundation beam, and input strain information measured by a distributed optical fiber sensing network into a deflection calculation formula to obtain pavement settlement;
the curved surface grid reconstruction algorithm is to reconstruct the deformation information of the whole curved surface by using the discrete point deformation information measured in the curved surface through a curved surface fitting algorithm, so that the monitoring of the deformation information of the curved surface is realized.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168951A (en) * | 2010-12-22 | 2011-08-31 | 大连理工大学 | Detachable rigidity-to-flexibility optical fiber sensor and arrangement method thereof |
| CN102914289A (en) * | 2012-10-10 | 2013-02-06 | 江苏中江物联网科技有限公司 | Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system |
| CN202836520U (en) * | 2012-06-07 | 2013-03-27 | 大连理工大学 | Fiber sensing device for road structure multilayer medium full-scale monitoring |
| CN105064187A (en) * | 2015-05-18 | 2015-11-18 | 大连理工大学 | Asphalt pavement continuous vertical deformation monitoring sensor based on optical fiber sensing technology |
| CN105788749A (en) * | 2016-02-29 | 2016-07-20 | 大连理工大学 | Intelligent photoelectric composite cable for monitoring local large deformation of structure and monitoring method |
| CN205826920U (en) * | 2013-09-12 | 2016-12-21 | 阿克解决方案公司 | Combination has the load-carrying bundle of elongated member, electric power umbilical cord and the umbilical cord of Connectorized fiber optic cabling |
| CN106546218A (en) * | 2016-11-25 | 2017-03-29 | 中交第公路勘察设计研究院有限公司 | A kind of high mountain permafrost distinguishes cloth subgrade settlement monitoring system and method |
| CN108680733A (en) * | 2018-08-15 | 2018-10-19 | 中交第二公路勘察设计研究院有限公司 | A kind of intelligent perception system and method for bituminous paving military service performance |
| CN108895974A (en) * | 2018-05-08 | 2018-11-27 | 航天东方红卫星有限公司 | A kind of malformation fiber-optic monitoring and reconstructing method and system |
| CN109631772A (en) * | 2019-01-09 | 2019-04-16 | 河海大学 | Road surface based on OFDR Fibre Optical Sensor collapses warning monitoring system and method |
| CN111504218A (en) * | 2020-04-28 | 2020-08-07 | 兰州大学 | Method for monitoring large deformation of submarine pipeline structure by quasi-distributed fiber grating sensor |
| CN113418641A (en) * | 2021-06-07 | 2021-09-21 | 兰州大学 | Highway stress and strain comprehensive monitoring method based on FBG fiber bragg grating sensing technology |
| CN114184137A (en) * | 2021-12-15 | 2022-03-15 | 四川农业大学 | Tunnel deformation monitoring system and method based on long-gauge-length optical fiber sensing technology |
-
2022
- 2022-07-07 CN CN202210796058.6A patent/CN115127513B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168951A (en) * | 2010-12-22 | 2011-08-31 | 大连理工大学 | Detachable rigidity-to-flexibility optical fiber sensor and arrangement method thereof |
| CN202836520U (en) * | 2012-06-07 | 2013-03-27 | 大连理工大学 | Fiber sensing device for road structure multilayer medium full-scale monitoring |
| CN102914289A (en) * | 2012-10-10 | 2013-02-06 | 江苏中江物联网科技有限公司 | Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system |
| CN205826920U (en) * | 2013-09-12 | 2016-12-21 | 阿克解决方案公司 | Combination has the load-carrying bundle of elongated member, electric power umbilical cord and the umbilical cord of Connectorized fiber optic cabling |
| CN105064187A (en) * | 2015-05-18 | 2015-11-18 | 大连理工大学 | Asphalt pavement continuous vertical deformation monitoring sensor based on optical fiber sensing technology |
| CN105788749A (en) * | 2016-02-29 | 2016-07-20 | 大连理工大学 | Intelligent photoelectric composite cable for monitoring local large deformation of structure and monitoring method |
| CN106546218A (en) * | 2016-11-25 | 2017-03-29 | 中交第公路勘察设计研究院有限公司 | A kind of high mountain permafrost distinguishes cloth subgrade settlement monitoring system and method |
| CN108895974A (en) * | 2018-05-08 | 2018-11-27 | 航天东方红卫星有限公司 | A kind of malformation fiber-optic monitoring and reconstructing method and system |
| CN108680733A (en) * | 2018-08-15 | 2018-10-19 | 中交第二公路勘察设计研究院有限公司 | A kind of intelligent perception system and method for bituminous paving military service performance |
| CN109631772A (en) * | 2019-01-09 | 2019-04-16 | 河海大学 | Road surface based on OFDR Fibre Optical Sensor collapses warning monitoring system and method |
| CN111504218A (en) * | 2020-04-28 | 2020-08-07 | 兰州大学 | Method for monitoring large deformation of submarine pipeline structure by quasi-distributed fiber grating sensor |
| CN113418641A (en) * | 2021-06-07 | 2021-09-21 | 兰州大学 | Highway stress and strain comprehensive monitoring method based on FBG fiber bragg grating sensing technology |
| CN114184137A (en) * | 2021-12-15 | 2022-03-15 | 四川农业大学 | Tunnel deformation monitoring system and method based on long-gauge-length optical fiber sensing technology |
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