CN206173724U - Optical fibre and grating intelligent steel twist joint - Google Patents
Optical fibre and grating intelligent steel twist joint Download PDFInfo
- Publication number
- CN206173724U CN206173724U CN201621203505.9U CN201621203505U CN206173724U CN 206173724 U CN206173724 U CN 206173724U CN 201621203505 U CN201621203505 U CN 201621203505U CN 206173724 U CN206173724 U CN 206173724U
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- optical fiber
- grating
- steel strand
- utility
- intelligent steel
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- Length Measuring Devices By Optical Means (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model provides an optical fibre and grating intelligent steel twist joint, include: center wire, and with the limit silk of center wire intorsion, last at least one recess that is provided with of center wire, optic fibre has been placed in the recess, be carved with at least one grating on the optic fibre. The utility model discloses in the time of can solving current fiber grating monitoring steel strand wires atress situation, technology survival rate and the lower technical problem of monitoring range are laid to it.
Description
Technical field
This utility model belongs to monitoring technical field, specifically, is related to a kind of optical fiber grating intelligent steel strand.
Background technology
Anchor pole in pull bar, suspension bridge, Cable in Cable stayed Bridge, internal and external prestress muscle, ground in steel strand wires such as bowstring arch bridge
It is crucial primary structure member in structure, its working condition during use is directly connected to the safety of structure.As which was using
It is subject to environmental attack, the coupling of the factor such as material aging and load long term effect unavoidably to produce damage accumulation in journey,
So as to cause its various functions all to reduce, the safety of structure service phase is threatened, after even causing calamity in extreme circumstances
Really.Therefore it is necessary that above-mentioned component is monitored.
Traditional monitoring meanss be mainly acceleration test, Corrosion monitoring, magnetic flux monitoring etc. technology, exist precision it is low,
Poor operability, be disturbed impact it is big, larger to structural elements stressing influence, be difficult to the defects such as real-time monitoring, crucial structure
The ess-strain of part monitors urgently reliable means of testing and technology.Fiber Bragg Grating technology by grid reflection wavelength and it is mobile come
Perceive the minor variations of external physical quantity, it is high with the measurement linearity, it is reproducible, can ess-strain carry out it is high-precision, exhausted
To, quasi-distributed digital measurement obtain advantage；Simultaneously also there is strong anti-electromagnetic interference capability, high temperature resistant, sensor bulk is little, connect
Line is simple, the characteristics of be capable of achieving data long-distance transmissions, be 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, using when need special guarantor
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 FBG monitoring steel strand wires force-bearing situation is applied, is needed
Solve which and lay the key technical problem such as work technique guarantee survival rate and monitoring range.
Utility model content
In view of this, technical problem to be solved in the utility model is using FBG monitoring steel strand wires force-bearing situation
When, the relatively low technical problem of its installation technicses survival rate and monitoring range.
In order to solve above-mentioned technical problem, this utility model embodiment provides a kind of optical fiber grating intelligent steel strand, including：
Central hair, and the side silk with the central hair twisting；At least one groove is provided with the central hair, is put in the groove
Optical fiber is equipped with, at least one grating on the optical fiber, is carved with.
Further, the optical fiber is pasted in the groove by adhesive.
Further, the groove is 0.1~0.8mm, a width of 0.1~1.5mm deeply.
Further, the groove is longitudinal fluting.
Further, the groove number is 1 to 6.
The technical scheme of this utility model embodiment compared with prior art, with following technique effect：
(1) by grating is affixed directly in the groove of central hair setting, it is ensured that grating is twisted with fiber optical grating intelligent steel
The bondability of line 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) by the longitudinal fluting arranged on central hair and the adhesive for pasting protection optical fiber, it is to avoid optical fiber is direct
The fracture caused with other solid surfaces' contact squeezes, improve under extensive style execution conditions and severe use environment optical fiber in light
Laying survival rate and service life in fine grating intelligent steel strand；
(3) by 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 in advance before being on active service optical fiber, expand the monitoring range of grating, it is to avoid due to the glass of fiber optic materials itself it is crisp
Property and limit its monitoring range unfavorable factor；
(4) by the multiple longitudinal flutings arranged in central hair, multigroup grating is made while work, can carry out many item datas pair
Than greatly enhancing the accuracy and cogency of monitoring result；
(5) by the multiple gratings being carved with optical fiber, the strain shape of optical fiber grating intelligent steel strand different parts can be monitored
Condition.
Certainly, implement arbitrary product of the present utility model to be not necessarily required to while reaching all the above technology effect
Really.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes of the present utility model one
Point, schematic description and description of the present utility model is used to explain this utility model, does not constitute to of the present utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the axonometric chart of the optical fiber grating intelligent steel strand of this utility model embodiment；
Fig. 2 is the cross-sectional configuration schematic diagram of the optical fiber grating intelligent steel strand of this utility model embodiment；
Fig. 3 is the Longitudinal cross section schematic of the central hair of the optical fiber grating intelligent steel strand of this utility model embodiment；
Fig. 4 is the cross-sectional view of the central hair of the optical fiber grating intelligent steel strand of this utility model embodiment.
Specific embodiment
Describe embodiment of the present utility model below in conjunction with drawings and Examples in detail, thereby to this utility model
How application technology means come solve technical problem and reach technology effect realize that process can fully understand and implement according to this.
As shown in Figures 1 to 4, the optical fiber grating intelligent steel strand 1 of this utility model embodiment includes central hair 2, and
With the side silk 3 of 2 twisting of central hair；At least one groove 21 is provided with central hair 2, in groove 21, optical fiber 22, optical fiber is placed with
At least one grating 23 is carved with 22.
Groove 21 is longitudinal fluting, and the number of groove 21 is 1 to 6.Groove 21 is 0.1~0.8mm deeply, a width of 0.1~
1.5mm, optical fiber 22 are pasted in groove 21 by adhesive 24.
The manufacture method of optical fiber grating intelligent steel strand of the present utility model is as follows：
Step 1：Steel strand wires machinery is broken up into taking-up central hair 2 or the central hair 2 for also not twisting into steel strand wires is taken；
Step 2：Open deep for 0.1~0.8mm, the groove 21 of a width of 0.1~1.5mm in 2 longitudinal direction of central hair；
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 for being carved with grating 23 is pasted in groove 21 with adhesive 24；
Step 5：A central hair 2 is put when adhesive intensity stabilization；
Step 6：The central hair 2 made is twisted into into fiber optical grating intelligent steel with the side silk 3 being wrapped in around central hair 2
Twisted wire.
21 number of groove in this utility model embodiment is 1~6, naturally it is also possible to which, for other numbers, this practicality is newly
Type is not construed as limiting to this.
23 number of grating that optical fiber 22 in this utility model embodiment is carved with can also be for multiple, specifically for one
Depending on required measuring point.
In this utility model embodiment, to stress during 2 tensioning of central hair between 0~1860MPa, when tension stress is 0
When, i.e. whether not tensioning central hair 2 specifically needs the determination of the size of tensioning and tension stress can should according to tested steel strand wires
Depending on becoming excursion.
The technical scheme of this utility model embodiment compared with prior art, with following technique effect：
(1) by grating 23 is affixed directly in the groove 21 that central hair 2 is arranged, it is ensured that grating 23 and fiber grating intelligence
The bondability of energy steel strand wires 1 so that deformation keeps harmonious, it is to avoid 23 surveyed strain of grating can not truly reflect optical fiber light
The situation of 1 actual strain of grid intelligent steel strand；
(2) by the longitudinal fluting 21 arranged on central hair 2 and the adhesive 24 for pasting protection optical fiber, it is to avoid optical fiber
22 fractures for directly causing with other solid surfaces' contact squeezes, improve the light under extensive style execution conditions and severe use environment
Laying survival rate and service life of the fibre 22 in optical fiber grating intelligent steel strand 1；
(3) by tensioning central hair 2, hold lotus adhesive 24 and paste optical fiber 22, after 24 intensity stabilization of adhesive, 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 in advance applies compressive strain to optical fiber 22 before being on active service, expand the monitoring range of grating 23, it is to avoid by
The unfavorable factor of its monitoring range is limited in the glass fragility of 22 material of optical fiber itself；
(4) by the multiple longitudinal flutings 21 arranged in central hair 2, multigroup grating 23 is made while work, can be carried out multinomial
Data Comparison, greatly enhances the accuracy and cogency of monitoring result；
(5) by the multiple gratings 23 being carved with optical fiber 22, answering for 1 different parts of optical fiber grating intelligent steel strand can be monitored
Change situation.
Described above illustrates and describes some preferred embodiments of the present utility model, but as previously mentioned, it should be understood that this
Utility model is not limited to form disclosed herein, is 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 utility model contemplated scope described herein, by above-mentioned teaching or association area
Technology or knowledge be modified.And change that those skilled in the art are carried out and change are without departing from spirit of the present utility model and model
Enclose, then all should be in the protection domain of this utility model claims.
Claims (5)
1. a kind of optical fiber grating intelligent steel strand, it is characterised in that include：
Central hair, and the side silk with the central hair twisting；
At least one groove is provided with the central hair, optical fiber is placed with the groove, at least one on the optical fiber, is carved with
Individual grating.
2. optical fiber grating intelligent steel strand according to claim 1, it is characterised in that the optical fiber is pasted by adhesive
In the groove.
3. optical fiber grating intelligent steel strand according to claim 1, it is characterised in that the groove deeply for 0.1~
0.8mm, a width of 0.1~1.5mm.
4. optical fiber grating intelligent steel strand according to claim 1, it is characterised in that the groove is longitudinal fluting.
5. optical fiber grating intelligent steel strand according to claim 1, it is characterised in that the groove number is 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621203505.9U CN206173724U (en) | 2016-11-08 | 2016-11-08 | Optical fibre and grating intelligent steel twist joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621203505.9U CN206173724U (en) | 2016-11-08 | 2016-11-08 | Optical fibre and grating intelligent steel twist joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206173724U true CN206173724U (en) | 2017-05-17 |
Family
ID=58682356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621203505.9U Expired - Fee Related CN206173724U (en) | 2016-11-08 | 2016-11-08 | Optical fibre and grating intelligent steel twist joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206173724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400556A (en) * | 2016-11-08 | 2017-02-15 | 朱万旭 | Fiber bragg grating intelligent steel strand and manufacturing method thereof |
| 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 |
-
2016
- 2016-11-08 CN CN201621203505.9U patent/CN206173724U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400556A (en) * | 2016-11-08 | 2017-02-15 | 朱万旭 | Fiber bragg grating intelligent steel strand and manufacturing method thereof |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20181108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |