CN106400556A - Fiber bragg grating intelligent steel strand and manufacturing method thereof - Google Patents
Fiber bragg grating intelligent steel strand and manufacturing method thereof Download PDFInfo
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- CN106400556A CN106400556A CN201610980023.2A CN201610980023A CN106400556A CN 106400556 A CN106400556 A CN 106400556A CN 201610980023 A CN201610980023 A CN 201610980023A CN 106400556 A CN106400556 A CN 106400556A
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- optical fiber
- steel strand
- intelligent steel
- central hair
- groove
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 239000000835 fiber Substances 0.000 title abstract description 11
- 239000013307 optical fiber Substances 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 abstract description 19
- 230000004083 survival effect Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000382 optic material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
- D07B1/145—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising elements for indicating or detecting the rope or cable status
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2095—Auxiliary components, e.g. electric conductors or light guides
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2301/00—Controls
- D07B2301/25—System input signals, e.g. set points
- D07B2301/259—Strain or elongation
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2301/00—Controls
- D07B2301/55—Sensors
- D07B2301/5531—Sensors using electric means or elements
- D07B2301/5577—Sensors using electric means or elements using light guides
Abstract
The invention provides a fiber bragg grating intelligent steel strand. The fiber bragg grating intelligent steel strand comprises a center wire and side wires, wherein the center wire and the side wires are twisted; at least one groove is formed in the center wire, optical fiber is placed in the grooves, and at least one grating is carved in the optical fiber. The invention further provides a manufacturing method of the fiber bragg grating intelligent steel strand. The technical problem that the laying process survival rate is low and monitoring range is narrow when stress conditions of the steel strand is monitored by an existing fiber bragg grating are solved.
Description
Technical field
The invention belongs to monitoring technical field, specifically, it is related to a kind of optical fiber grating intelligent steel strand and its making side
Method.
Background technology
Anchor pole in steel strand wires such as pull bar in bowstring arch bridge, suspension bridge, Cable in Cable stayed Bridge, internal and external prestress muscle, ground
It is crucial primary structure member in structure, the working condition during its use, it is directly connected to the safety of structure.Because it was using
It is subject to environmental attack, the coupling of the factor such as material aging and load long term effect in journey, unavoidably produce damage accumulation,
Thus leading to its various functions all to reduce, threaten the safety of structure service phase, after even causing calamity in extreme circumstances
Really.Therefore necessary above-mentioned component is monitored.
Traditional monitoring meanss be mainly acceleration test, Corrosion monitoring, magnetic flux monitoring etc. technology, exist precision low,
Poor operability, be disturbed impact big, larger to structural elements stressing influence, be difficult to the defects such as real-time monitoring, crucial structure
The ess-strain monitoring of part urgently reliable means of testing and technology.Fiber Bragg Grating technology by grid reflection wavelength and moves
The minor variations of perception external physical quantity, it is high to have a measurement linearity, reproducible, can ess-strain carry out high-precision, exhausted
To, quasi-distributed digital measurement obtain advantage；Also have that anti-electromagnetic interference capability is strong, high temperature resistant, sensor bulk is little simultaneously, connect
Line is simple, feature that is can achieve data long-distance transmissions, is suitable for the ess-strain monitoring of the steel strand wires of crucial primary structure member.
Yet with the intrinsic glass fragility of fiber optic materials, its shearing resistance is poor with bend resistance ability, needs special guarantor during application
Shield；The ultimate tensile strength of optical fiber is about 5000 microstrains simultaneously, and steel strand wires ultimate tensile strength value is micro- up to even more than 10000
Strain, so that fiber-optic grating sensor monitoring range is inadequate.Therefore apply FBG monitoring steel strand wires force-bearing situation, need
Solve it and lay the key technical problem such as work technique guarantee survival rate and monitoring range.
Content of the invention
In view of this, when the technical problem to be solved is application FBG monitoring steel strand wires force-bearing situation,
Its installation technicses survival rate and the monitoring relatively low technical problem of range.
In order to solve above-mentioned technical problem, the embodiment of the present invention provides a kind of optical fiber grating intelligent steel strand, including：Center
Silk, and the side silk with described central hair twisting；At least one groove is provided with described central hair, is placed with described groove
Optical fiber, described optical fiber is carved with least one grating.
Further, described optical fiber is pasted in described groove by adhesive.
Further, described groove is 0.1～0.8mm, a width of 0.1～1.5mm deeply.
Further, described groove is longitudinal fluting.
Further, described groove number is 1 to 6.
The embodiment of the present invention also provides a kind of manufacture method of optical fiber grating intelligent steel strand, comprises the steps：
Described groove is opened on described central hair；
Tensioning is carried out to described central hair, tension stress, between 0～1860MPa, maintains described tension stress constant, will
The described optical fiber being carved with described grating is pasted in described groove with described adhesive；
Put Zhang Suoshu central hair when described adhesive intensity stabilization；
The described central hair made and described side silk are twisted into described optical fiber grating intelligent steel strand.
The technical scheme of the embodiment of the present invention compared with prior art, has following technique effect：
(1) by being affixed directly to grating in the groove of central hair setting it is ensured that grating is twisted with fiber optical grating intelligent steel
The bondability of line is so that deformation keeps harmonious, it is to avoid the surveyed strain of grating can not truly reflect fiber optical grating intelligent steel
The situation of twisted wire actual strain；
(2) longitudinal fluting of setting and the adhesive pasting protection optical fiber on central hair are passed through, it is to avoid optical fiber is direct
The fracture causing with other solid surfaces' contact squeezes, improve under extensive style execution conditions and severe use environment optical fiber in light
Laying survival rate in fine grating intelligent steel strand and service life；
(3) pass through tensioning central hair, hold lotus and paste optical fiber, after adhesive intensity stabilization, put a making side for central hair
Method, according to the range of strain of optical fiber grating intelligent steel strand, changes the stretching force to central hair, in optical fiber grating intelligent steel strand
Apply compressive strain to optical fiber in advance before military service, expand the monitoring range of grating, it is to avoid because the glass of fiber optic materials itself is crisp
Property and limit its monitoring range unfavorable factor；
(4) pass through in multiple longitudinal flutings of central hair setting, so that multigroup grating is worked simultaneously, many item data pair can be carried out
Ratio greatly enhances accuracy and the cogency of monitoring result；
(5) the multiple gratings being carved with are passed through on optical fiber, the strain shape of optical fiber grating intelligent steel strand different parts can be monitored
Condition.
Certainly, the arbitrary product implementing the present invention must be not necessarily required to reach all the above technique effect simultaneously.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this
Bright schematic description and description is used for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the axonometric chart of the optical fiber grating intelligent steel strand of the embodiment of the present invention；
Fig. 2 is the cross-sectional configuration schematic diagram of the optical fiber grating intelligent steel strand of the embodiment of the present invention；
Fig. 3 is the Longitudinal cross section schematic of the central hair of the optical fiber grating intelligent steel strand of the embodiment of the present invention；
Fig. 4 is the cross-sectional view of the central hair of the optical fiber grating intelligent steel strand of the embodiment of the present invention.
Specific embodiment
To describe embodiments of the present invention in detail below in conjunction with drawings and Examples, thereby how the present invention to be applied
Technological means are solving technical problem and to reach realizing process and fully understanding and implement according to this of technology effect.
As shown in Figures 1 to 4, the optical fiber grating intelligent steel strand 1 of the embodiment of the present invention includes central hair 2, and with
The side silk 3 of heart silk 2 twisting；At least one groove 21 is provided with central hair 2, is placed with optical fiber 22 in groove 21, on optical fiber 22
It is carved with least one grating 23.
Groove 21 is longitudinal fluting, and the number of groove 21 is 1 to 6.Groove 21 is deep to be 0.1～0.8mm, a width of 0.1～
1.5mm, optical fiber 22 is pasted in groove 21 by adhesive 24.
The manufacture method that the embodiment of the present invention additionally provides optical fiber grating intelligent steel strand, comprises the steps：
Step 1：Steel strand wires machinery is broken up taking-up central hair 2 or takes the central hair 2 also not twisting into steel strand wires；
Step 2：Longitudinally opening deep in central hair 2 is 0.1～0.8mm, the groove 21 of a width of 0.1～1.5mm；
Step 3：Tensioning is carried out to central hair 2, tension stress is between 0～1860MPa；
Step 4：Maintain stretching force constant, the optical fiber 22 being carved with grating 23 is pasted in groove 21 with adhesive 24；
Step 5：Put a central hair 2 when adhesive intensity stabilization；
Step 6：The central hair made 2 is twisted into fiber optical grating intelligent steel with the side silk 3 being wrapped in around central hair 2
Twisted wire.
Groove 21 number in the embodiment of the present invention is 1～6 naturally it is also possible to be other numbers, the present invention is to this not
It is construed as limiting.
Grating 23 number that optical fiber 22 in the embodiment of the present invention is carved with can also be able to be multiple for one, specifically regards institute
Depending on needing measuring point.
In the embodiment of the present invention, to stress during central hair 2 tensioning between 0～1860MPa, when tension stress is 0, that is,
Not tensioning central hair 2, the specifically determination the need of tensioning and the size of tension stress can strain according to tested steel strand wires and become
Depending on changing scope.
The technical scheme of the embodiment of the present invention compared with prior art, has following technique effect：
(1) pass through grating 23 is affixed directly in the groove 21 that central hair 2 arranges it is ensured that grating 23 and fiber grating intelligence
The bondability of energy steel strand wires 1 is so that deformation keeps harmonious, it is to avoid the surveyed strain of grating 23 can not truly reflect optical fiber light
The situation of grid intelligent steel strand 1 actual strain；
(2) longitudinal fluting 21 of setting and the adhesive 24 pasting protection optical fiber on central hair 2 are passed through, it is to avoid optical fiber
22 fractures directly causing with other solid surfaces' contact squeezes, improve light under extensive style execution conditions and severe use environment
Fine 22 laying survival rates in optical fiber grating intelligent steel strand 1 and service life；
(3) pass through tensioning central hair 2, hold lotus adhesive 24 and paste optical fiber 22, after adhesive 24 intensity stabilization, put and open
The manufacture method of central hair 2, according to the range of strain of optical fiber grating intelligent steel strand 1, changes the stretching force to central hair 2,
Optical fiber grating intelligent steel strand 1 applies compressive strain to optical fiber 22 before being on active service in advance, expands the monitoring range of grating 23, it is to avoid by
Limit the unfavorable factor of its monitoring range in the glass fragility of optical fiber 22 material itself；
(4) pass through in multiple longitudinal flutings 21 of central hair 2 setting, so that multigroup grating 23 is worked simultaneously, can carry out multinomial
Data Comparison, greatly enhances accuracy and the cogency of monitoring result；
(5) the multiple gratings 23 being carved with are passed through on optical fiber 22, answering of optical fiber grating intelligent steel strand 1 different parts can be monitored
Change situation.
Described above illustrate and describes some preferred embodiments of the present invention, but as previously mentioned it should be understood that the present invention
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations,
Modification and environment, and can be in invention contemplated scope described herein, by technology or the knowledge of above-mentioned teaching or association area
It is modified.And the change that those skilled in the art are carried out and change without departing from the spirit and scope of the present invention, then all should be at this
In the protection domain of bright claims.
Claims (6)
1. a kind of optical fiber grating intelligent steel strand is it is characterised in that include：
Central hair, and the side silk with described central hair twisting；
At least one groove is provided with described central hair, in described groove, is placed with optical fiber, described optical fiber is carved with least one
Individual grating.
2. optical fiber grating intelligent steel strand according to claim 1 is it is characterised in that described optical fiber is pasted by adhesive
In described groove.
3. optical fiber grating intelligent steel strand according to claim 1 it is characterised in that described groove be deeply 0.1～
0.8mm, a width of 0.1～1.5mm.
4. optical fiber grating intelligent steel strand according to claim 1 is it is characterised in that described groove is longitudinal fluting.
5. optical fiber grating intelligent steel strand according to claim 1 is it is characterised in that described groove number is 1 to 6.
6. a kind of manufacture method of the optical fiber grating intelligent steel strand as described in any one as claim 1-5 is it is characterised in that wrap
Include following steps：
Described groove is opened on described central hair；
Tensioning is carried out to described central hair, tension stress, between 0～1860MPa, maintains described tension stress constant, will be carved with
The described optical fiber of described grating is pasted in described groove with described adhesive；
Put Zhang Suoshu central hair when described adhesive intensity stabilization；
The described central hair made and described side silk are twisted into described optical fiber grating intelligent steel strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980023.2A CN106400556A (en) | 2016-11-08 | 2016-11-08 | Fiber bragg grating intelligent steel strand and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980023.2A CN106400556A (en) | 2016-11-08 | 2016-11-08 | Fiber bragg grating intelligent steel strand and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106400556A true CN106400556A (en) | 2017-02-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610980023.2A Pending CN106400556A (en) | 2016-11-08 | 2016-11-08 | Fiber bragg grating intelligent steel strand and manufacturing method thereof |
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| Country | Link |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908909A (en) * | 2017-04-26 | 2017-06-30 | 桂林理工大学 | A kind of intelligent steel strand End optical fibers joint package connector and its installation method |
| CN106949996A (en) * | 2017-04-28 | 2017-07-14 | 王继成 | Optical fiber grating intelligent steel strand and its monitoring system and scaling method |
| CN107059619A (en) * | 2017-04-12 | 2017-08-18 | 浙锚科技股份有限公司 | A kind of intelligent suspension cable of parallel steel wire bridge |
| CN107144387A (en) * | 2017-04-12 | 2017-09-08 | 浙锚科技股份有限公司 | A kind of intelligent suspension cable of parallel steel wire bridge |
| CN107219598A (en) * | 2017-06-22 | 2017-09-29 | 江阴法尔胜住电新材料有限公司 | One kind filling bonds anti-corrosion type intelligent steel strand |
| CN107385981A (en) * | 2017-06-22 | 2017-11-24 | 江阴法尔胜住电新材料有限公司 | It is a kind of to fill the preparation method for bonding anti-corrosion type intelligent steel strand |
| CN107740297A (en) * | 2017-11-14 | 2018-02-27 | 浙锚科技股份有限公司 | Intelligence extruding drag-line and preparation method based on filled-type epoxy coating strand |
| CN108507714A (en) * | 2018-06-07 | 2018-09-07 | 广西大学 | Primary structure member, fiber-optic grating sensor and smart stay cable and production method |
| CN110469125A (en) * | 2019-08-30 | 2019-11-19 | 桂林理工大学 | A kind of isotonic method intelligent tensioning apparatus and method of parallel beam guy of twisted steel cable optical fiber |
| CN110747669A (en) * | 2019-10-17 | 2020-02-04 | 柳州欧维姆机械股份有限公司 | Fiber grating intelligent rib and manufacturing method thereof |
| CN112854775A (en) * | 2021-01-08 | 2021-05-28 | 王蔚 | Steel wire structure |
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| CN206173724U (en) * | 2016-11-08 | 2017-05-17 | 朱万旭 | Optical fibre and grating intelligent steel twist joint |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059619A (en) * | 2017-04-12 | 2017-08-18 | 浙锚科技股份有限公司 | A kind of intelligent suspension cable of parallel steel wire bridge |
| CN107144387A (en) * | 2017-04-12 | 2017-09-08 | 浙锚科技股份有限公司 | A kind of intelligent suspension cable of parallel steel wire bridge |
| CN107144387B (en) * | 2017-04-12 | 2019-08-06 | 浙锚科技股份有限公司 | A kind of parallel steel wire bridge intelligence suspension cable |
| CN106908909B (en) * | 2017-04-26 | 2018-09-28 | 桂林理工大学 | A kind of intelligent steel strand End optical fibers connector package connector and its installation method |
| CN106908909A (en) * | 2017-04-26 | 2017-06-30 | 桂林理工大学 | A kind of intelligent steel strand End optical fibers joint package connector and its installation method |
| CN106949996A (en) * | 2017-04-28 | 2017-07-14 | 王继成 | Optical fiber grating intelligent steel strand and its monitoring system and scaling method |
| CN107219598A (en) * | 2017-06-22 | 2017-09-29 | 江阴法尔胜住电新材料有限公司 | One kind filling bonds anti-corrosion type intelligent steel strand |
| CN107385981A (en) * | 2017-06-22 | 2017-11-24 | 江阴法尔胜住电新材料有限公司 | It is a kind of to fill the preparation method for bonding anti-corrosion type intelligent steel strand |
| CN107740297A (en) * | 2017-11-14 | 2018-02-27 | 浙锚科技股份有限公司 | Intelligence extruding drag-line and preparation method based on filled-type epoxy coating strand |
| CN108507714A (en) * | 2018-06-07 | 2018-09-07 | 广西大学 | Primary structure member, fiber-optic grating sensor and smart stay cable and production method |
| CN108507714B (en) * | 2018-06-07 | 2024-02-27 | 广西大学 | Stress component, fiber bragg grating sensor, intelligent inhaul cable and manufacturing method |
| CN110469125A (en) * | 2019-08-30 | 2019-11-19 | 桂林理工大学 | A kind of isotonic method intelligent tensioning apparatus and method of parallel beam guy of twisted steel cable optical fiber |
| CN110469125B (en) * | 2019-08-30 | 2021-03-30 | 桂林理工大学 | Parallel bundle steel strand stay cable optical fiber equal-tension intelligent tensioning device and method |
| CN110747669A (en) * | 2019-10-17 | 2020-02-04 | 柳州欧维姆机械股份有限公司 | Fiber grating intelligent rib and manufacturing method thereof |
| CN110747669B (en) * | 2019-10-17 | 2024-03-15 | 柳州欧维姆机械股份有限公司 | Fiber bragg grating intelligent rib and manufacturing method thereof |
| CN112854775A (en) * | 2021-01-08 | 2021-05-28 | 王蔚 | Steel wire structure |
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Application publication date: 20170215 |
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