CN205138438U - Coupling fiber grating's wide range intelligence high tensile steel wire - Google Patents
Coupling fiber grating's wide range intelligence high tensile steel wire Download PDFInfo
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- CN205138438U CN205138438U CN201520890559.6U CN201520890559U CN205138438U CN 205138438 U CN205138438 U CN 205138438U CN 201520890559 U CN201520890559 U CN 201520890559U CN 205138438 U CN205138438 U CN 205138438U
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- steel wire
- fiber grating
- optical fiber
- high tensile
- wide range
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Abstract
The application discloses coupling fiber grating's wide range intelligence high tensile steel wire is provided with at least one spiral recess on it, place the optical fiber cable in the recess and be used for covering the protective layer of optical fiber cable, is carved with a plurality of gratings on the optical fiber cable. The utility model discloses a set up spiral recess on the steel wire, according to the scope of meeting an emergency of component, change the size of recess helical angle, change the pitch of recess promptly, enlarge fiber bragg grating sensor ware measuring range, avoided because the own glass fragility of fiber grating material and restrict its unfavorable factor of measuring the range, through inside lieing in fiber grating the steel wire, it is not influenced basically under the construction environment of complicacy, avoided because the purpose of life in order to satisfy long -term monitoring of fiber grating sensor, has been guaranteed the adverse effect of fiber grating sensor to the construction factor, through opening a plurality of spiral notches at the steel wire, make the simultaneous working of multiunit fiber grating, can carry out the contrast of multinomial data, improved monitoring results's accuracy.
Description
Technical field
The application belongs to the strain monitoring technical field of prestress wire or steel tendon drag-line, specifically, relates to a kind of wide range intelligence high tensile steel wire of coupled fiber grating.
Background technology
Prestressed structure and building guy cable are widely used in the civil infrastructure of the every field such as bridge, skyscraper, high-rise buildings, underground structure, ocean structure, pressure vessel, large-tonnage blockship structure and nuclear power station.It is even century-old that its operating period in life-span of various structure reaches decades, in use by environmental attack, the coupling of the factors such as material aging and load long-term effect, inevitably make the damage accumulation of structure and system, thus the ability of opposing disaster decays, even normal usage function all can reduce, even cause catastrophic effect in extreme circumstances, so the safety analysis of structure and monitoring means are very important.
High strength steel strand and steel wire to form in modern prestressed structure presstressed reinforcing steel and drag-line the most widely, monitor have very great meaning to the stress state in its use procedure.And Fiber Bragg Grating technology is by grid reflects wavelength and the subtle change moving perception external physical quantity.There is measure linear degree high, reproducible.High-precision, absolute, quasi-distributed digital measurement can be carried out to the ess-strain of structure.Also there is the feature that anti-electromagnetic interference capability is strong, high temperature resistant, sensor bulk is little, wiring is simple, can realize data long-distance transmissions simultaneously, than the monitoring of stress deformation being more suitable for high tensile steel wire.
Owing to being that glass is more crisp by the material of optical fiber own, limit the range of fiber grating, when for long term monitoring, more than 5000 microstrains, otherwise can not easily there is fracture in its tensile strain be subject to, cause it ineffective.But the strain ratio of high tensile steel wire practical application is higher, general Cable forces strain value is close to 4000 microstrains, and the steel wire secular strain value of prestressing with bond muscle is more than 6000 microstrains., affect by installation technics meanwhile, if cannot fully bond in work progress with building element, the dependent variable detected and actual strain are misfitted.If improper to optical fiber grating protecting in the work progress of complexity, possibly cannot ensure that the serviceable life of sensor meets the object of long term monitoring.
Utility model content
In view of this, technical problems to be solved in this application there is provided a kind of wide range intelligence high tensile steel wire of coupled fiber grating, solve the problem because installation technics reduction FBG monitoring accuracy and FBG monitoring range are restricted.
In order to solve the problems of the technologies described above; the utility model provides a kind of wide range intelligence high tensile steel wire of coupled fiber grating on the one hand; be provided with at least one screw type groove; be placed with optical fiber cable and the fiber optic protection layer for covering described optical fiber cable in described groove, described optical fiber cable is carved with grating.
Further, described channel section is circular arc, and its radius is 0.1-0.6mm.
Further, described optical fiber cable and described fiber optic protection layer fill full described groove.
Further, described groove number is 1-8.
Further, the helix angle of described groove is for being greater than 0 ° and being less than or equal to 90 °.
Further, the wide range intelligence high tensile steel wire of described coupled fiber grating is applied on steel strand wires or steel tendon drag-line.
Compared with prior art, the application can obtain and comprise following technique effect:
1) by fiber grating direct-coupling is inner at steel wire, improve structure bond degree, and be consistent with the distortion of component, the actual strain making fiber-optic grating sensor institute survey strain and component matches;
2) by arranging spiral groove on steel wire, according to the range of strain of component, change the size at groove coil angle, namely the pitch of groove is changed, expand the range that fiber-optic grating sensor is measured, avoid and limit due to the glass fragility of fiber grating material own the unfavorable factor that it measures range;
3) by fiber grating is positioned at steel wire inside, substantially unaffected under the construction environment of complexity, avoid because construction factor is to the adverse effect of fiber-optic grating sensor, ensure that the serviceable life of fiber-optic grating sensor meets the object of long term monitoring;
4) by multiple spiral notch can be opened at steel wire, many group optical fiber is worked simultaneously, can multinomial Data Comparison be carried out, greatly enhance accuracy and the cogency of monitoring result;
Certainly, the arbitrary product implementing the application must not necessarily need to reach above-described all technique effects simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, and form a application's part, the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the wide range intelligence high tensile steel wire fluting schematic diagram of the coupled fiber grating of the embodiment of the present application;
Fig. 2 is another fluting schematic diagram of wide range intelligence high tensile steel wire of the coupled fiber grating of the embodiment of the present application;
Fig. 3 is the fluting cross-sectional view of the wide range intelligence high tensile steel wire of the coupled fiber grating of the embodiment of the present application;
Fig. 4 is another fluting cross-sectional view of the wide range intelligence high tensile steel wire of the coupled fiber grating of the embodiment of the present application;
Fig. 5 is fiber grating and the steel wire axial deformation mathematical relation schematic diagram of the embodiment of the present application.
Embodiment
Drawings and Examples will be coordinated below to describe the embodiment of the application in detail, by this to the application how application technology means solve technical matters and the implementation procedure reaching technology effect can fully understand and implement according to this.
The utility model embodiment is introduced in detail below in conjunction with Fig. 1-5.
Embodiment one
As Figure 1-Figure 5; present embodiments provide a kind of wide range intelligence high tensile steel wire 1 of coupled fiber grating; be provided with at least one screw type groove 2; be placed with optical fiber cable 3 and the fiber optic protection layer 4 for covering described optical fiber cable 3 in described groove 2, described optical fiber cable 3 is carved with multiple grating.
Particularly, described groove 2 cross section is circular arc, and its radius is 0.1-0.6mm.
In the present embodiment, described optical fiber cable 3 and described fiber optic protection layer 4 fill full described groove 2.
Particularly, described groove 2 number is 1-8.
In the present embodiment, as shown in Figure 5, the helixangleθ of described groove 2 can for being greater than 0 ° and being less than or equal to 90 °, in the present embodiment, and the helixangleθ being specially described groove 2 is 30 °.
In the present embodiment, the increase effect of helixangleθ to the range of optical fiber cable 3 of described groove 2 is as follows:
When steel wire 1 produces microstrain because strain and steel wire 1 size disparity are larger, angle change can be ignored, in Fig. 5, helixangleθ is 30 °, L1 is optical fiber cable 3 length, L2 is pitch, Q1 is steel wire 1 axial strain, Q2 is the strain of optical fiber cable 3, the strain Q2 being coupling in the optical fiber cable 3 on steel wire 1 is sin30 ° with the ratio of steel wire 1 axial strain Q1, namely when the helixangleθ of groove 2 is 30 degree, optical fiber cable 3 strains the half of just steel wire 1 axial strain, so twice when now the range of optical fiber cable 3 becomes direct axial arranged along steel wire 1.
In the present embodiment, the wide range intelligence high tensile steel wire 1 of described coupled fiber line 3 is applied on steel strand wires or steel tendon drag-line, the wide range intelligence high tensile steel wire 1 of described coupled fiber line 3 can as central hair in steel strand wires, also can as the steel wire forming steel tendon drag-line.
Embodiment two
Present embodiments provide a kind of method for making of wide range intelligence high tensile steel wire 1 of coupled fiber line 3, its method step comprises:
Step 1: open screw type groove 2 on steel wire;
Step 2: stretch to described steel wire, drawing stress is between 0 ~ 1860MPa;
Step 3: smear optical fiber cable 3 adhesive in described groove 2, and the optical fiber cable 3 being carved with grating is pasted onto in described groove 2;
Step 4: place the fiber optic protection layer 4 for covering described optical fiber cable 3 in described groove 2.
In the present embodiment, after winding optical fiber cable 3, the middle silk in maintenance steel strand wires or certain root steel wire extended state a period of time of steel tendon drag-line, until the adhesive of optical fiber cable 3 works.
In the present embodiment, described groove 2 cross section is circular arc, and its radius is 0.1-0.6mm; Described groove 2 number is 1-8; The helixangleθ of described groove 2 is for being greater than 0 ° and being less than or equal to 90 °; Described optical fiber cable 3 and described fiber optic protection layer 4 fill full described groove 2.
Because optical fiber cable 3 character is fragile, if normal winding can cause just having tensile strain when being wound around, thus cause range deficiency even just may destroy optical fiber cable 3 generation when being wound around, thus reduce usability and life-span.And first certain root steel wire of silk in steel strand wires or steel tendon drag-line is stretched winding optical fiber line 3 again, after certain the root steel wire discharging silk or steel tendon drag-line in steel strand wires, axial strain due to steel wire can drive optical fiber cable 3 to produce strain, thus the tensile strain of offsetting owing to producing when being wound around even can make optical fiber cable 3 produce compressive strain thus improve range and the serviceable life of optical fiber cable 3.
The utility model, by optical fiber cable 3 direct-coupling is inner at steel wire 1, improve structure bond degree, and is consistent with the distortion of component, and the actual strain making fiber-optic grating sensor institute survey strain and component matches; The utility model, by changing the size of groove 2 helixangleθ, expands the range that fiber-optic grating sensor is measured, and avoids and limits due to the glass fragility of optical fiber cable 3 own the unfavorable factor that it measures range; The utility model can be inner by optical fiber cable 3 being positioned at steel wire 1, substantially unaffected under the construction environment of complexity, avoid because construction factor is to the adverse effect of optical fiber cable 3 sensor, ensure that the object meeting long term monitoring serviceable life of optical fiber cable 3 sensor; The utility model by opening multiple spiral notch at steel wire 1, can also make many group optical fiber work simultaneously, can carry out multinomial Data Comparison, provide accuracy and the cogency of monitoring result to a great extent.
Above-mentioned explanation illustrate and describes some preferred embodiments of the present utility model, but as previously mentioned, be to be understood that the utility model is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in utility model contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from spirit and scope of the present utility model, then all should in the protection domain of the utility model claims.
Claims (6)
1. the wide range intelligence high tensile steel wire of a coupled fiber grating; it is characterized in that; be provided with at least one screw type groove, be placed with optical fiber cable and the fiber optic protection layer for covering described optical fiber cable in described groove, described optical fiber cable is carved with multiple grating.
2. the wide range intelligence high tensile steel wire of coupled fiber grating according to claim 1, it is characterized in that, described channel section is circular arc, and its radius is 0.1-0.6mm.
3. the wide range intelligence high tensile steel wire of coupled fiber grating according to claim 1, it is characterized in that, described optical fiber cable and described fiber optic protection layer fill full described groove.
4. the wide range intelligence high tensile steel wire of coupled fiber grating according to claim 1, it is characterized in that, described groove number is 1-8.
5. the wide range intelligence high tensile steel wire of coupled fiber grating according to claim 1, it is characterized in that, the helix angle of described groove is for being greater than 0 ° and being less than or equal to 90 °.
6., according to the wide range intelligence high tensile steel wire of the coupled fiber grating described in any one of claim 1-5, it is characterized in that, it is applied on steel strand wires or steel tendon drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520890559.6U CN205138438U (en) | 2015-11-10 | 2015-11-10 | Coupling fiber grating's wide range intelligence high tensile steel wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520890559.6U CN205138438U (en) | 2015-11-10 | 2015-11-10 | Coupling fiber grating's wide range intelligence high tensile steel wire |
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| CN205138438U true CN205138438U (en) | 2016-04-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300305A (en) * | 2015-11-10 | 2016-02-03 | 桂林理工大学 | Coupled fiber grating wide-range intelligent high-strength steel wire and manufacturing method thereof |
| CN109610735A (en) * | 2018-12-28 | 2019-04-12 | 东南大学 | It is a kind of distributed from monitoring prestressing force composite reinforcing based on long gauge length optical fibre grating |
| CN112240751A (en) * | 2019-07-16 | 2021-01-19 | 武汉理工大学 | Multi-dimensional fiber grating strain sensor and manufacturing method thereof |
-
2015
- 2015-11-10 CN CN201520890559.6U patent/CN205138438U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300305A (en) * | 2015-11-10 | 2016-02-03 | 桂林理工大学 | Coupled fiber grating wide-range intelligent high-strength steel wire and manufacturing method thereof |
| CN109610735A (en) * | 2018-12-28 | 2019-04-12 | 东南大学 | It is a kind of distributed from monitoring prestressing force composite reinforcing based on long gauge length optical fibre grating |
| CN109610735B (en) * | 2018-12-28 | 2024-05-14 | 东南大学 | Distributed self-monitoring prestress composite bar based on long gauge length fiber bragg grating |
| CN112240751A (en) * | 2019-07-16 | 2021-01-19 | 武汉理工大学 | Multi-dimensional fiber grating strain sensor and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20191110 |