CN1590638A - Optical fiber grating intelligent dragline - Google Patents
Optical fiber grating intelligent dragline Download PDFInfo
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- CN1590638A CN1590638A CN 03132592 CN03132592A CN1590638A CN 1590638 A CN1590638 A CN 1590638A CN 03132592 CN03132592 CN 03132592 CN 03132592 A CN03132592 A CN 03132592A CN 1590638 A CN1590638 A CN 1590638A
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Abstract
An intelligent pull cable with optical fibre raster for showing its stressed state is composed of steel wires or twisted steel wires, protecting jacket, and the optical fibre raster sensors arranged along with said steel wires or twisted steel wires in their longitudinal direction.
Description
(1), affiliated field
What the present invention relates to is a kind of smart stay cable that is used for guy systems such as cable-stayed bridge, suspension rod arch bridge, cable, suspension bridge, specifically a kind of drag-line with automatic monitoring function.
(2), background technology
Drag-line members such as cable-stayed bridge cable, arch bridge suspender, cable, suspension cable are the isostructural core important components of bridge, cableway.Because the free degree of bridge structure is little, suspension rod arch bridge structure especially, drag-line plays the key effect of " lead and start whole body ".Owing to reasons such as environmental corrosion, fatigue damage, military service Redistribution of Internal, drag-line very easily sustains damage, and its active time is often than weak point many of design in advance, and it is very high to change the expense of rope, general at more than a times of former bridge total cost, be tens of times of former drag-line cost.As German KohibrandEstuary bridge, build up after 3 years and change rope, expensive 6,000 ten thousand dollars, be 4 times of former cost.In addition, the steel wire of drag-line inside is because unbalance stress is easy to cause the stress difference of part steel wire (or steel strand wires) very big, and indivedual steel wires can reach surrender in advance, even fracture of wire, finally cause the steel wire in the drag-line all to lose efficacy.Therefore, the stressed monitoring of drag-line (or detect) and damage check, estimate significant.At present forces testing, the damage of rope are estimated and are changed that the rope decision-making is main relies on acceleration test, corrosion to detect and the magnetosphere detection technique, these technology exist that precision is low, poor operability, be subjected to interference stability poor, can not real time on-line monitoring etc. shortcoming.Stressed and the damage evaluation of drag-line is needed reliable means of testing technology badly.
(3), summary of the invention
The object of the present invention is to provide a kind of fiber optical grating intelligent drag-line with intelligent characteristic.
The object of the present invention is achieved like this: it comprises the sheath that steel wire or steel strand wires are outer with wrapping in steel wire or steel strand wires, is laid with the fiber-optic grating sensor that is combined into one with steel wire or steel strand wires in steel wire or steel strand wires along its length.The present invention can also comprise some architectural features like this: 1, string has the unsettled fiber grating of temperature-compensating in the fiber-optic grating sensor.2, the unsettled fiber grating of temperature-compensating is enclosed in the metal capillary admittedly.3, fiber-optic grating sensor is circumferential arrangement in the drag-line cross section.4, fiber-optic grating sensor is distributed in steel wire or steel strand wires outer surface.5, the fiber-optic grating sensor signal transmission fiber is drawn from the anchor head end, has preformed hole on its anchor head end.6, the fiber-optic grating sensor signal transmission fiber is drawn from conduit, has preformed hole on its end of conduit.7, go out to be provided with the protection box in the position of drawing the signal output optical fibre.
The fiber grating measuring technology is based on the absolute measurement technology of wavelength information.Because fiber grating has wavelength selectivity, with the fibre system compatibility, insert characteristics such as loss is low, simple in structure, volume is little, with low cost, fiber-optic grating sensor has outstanding advantage: can avoid the interference of electromagnetic field, electrical insulating property is good; Not influenced by wet environment; Good endurance has opposing and comprises the various adverse circumstances of high temperature (less than 600 ℃) and the ability of chemical erosion, the ability that has the vibration of bearing and impact; Light weight, volume be little, little to structure influence, be easy to arrange; Both point measurement can be realized, also distributed measurement can be realized; Absolute measurement; Save circuit, only just can the transfer structure status signal with single line; But signal, data multiplexing are convenient to be connected with computer, and signal attenuation is little on the unit length; Highly sensitive, the precision height; Bandwidth, signal to noise ratio is high.At present, fiber-optic grating sensor has been widely used in fields such as civil engineering, Aero-Space, petrochemical industry, medical science, environmental project.
The present invention organically combines fiber grating and drag-line, make outside having the characteristic of common drag-line, all advantages that possessed fiber grating: as corrosion-resistant, sensing accuracy is high (can reach 1～2 μ ε), anti-electromagnetic interference, quasi-distributed sensing, absolute measurement, stability and good endurance etc., can grasp the stressing conditions of drag-line easily in construction and military service process, thereby can instruct the prestressed stretch-draw and the construction of drag-line, and for the damage of military service drag-line identification with change the rope decision-making direct information is provided.Can conveniently hold the unbalance stress situation of drag-line inner wire by inside and outside circumferential arrangement fiber grating.This smart stay cable is a kind of good packaging protection of fiber grating, has overcome bare optical fibers and bare optical gratings and has been difficult to the requirement of adaptive stay cable structure extensive style construction, and given full play to the good sensor performance of fiber grating.In addition, smart stay cable can cut into random length according to actual demands of engineering, transmission cable is drawn get final product.This drag-line is very easy to use, is particularly suitable for industrialization production.
The fiber optical grating intelligent rope that the present invention utilizes the apperceive characteristic of the stressed and strength characteristics of high tensile steel wire or guy of twisted steel cable and Fiber Bragg Grating FBG to develop can be widely used in the engineering structure that cable-stayed bridge, suspension bridge, suspension rod arch bridge, cable etc. need the drag-line member.
(4), description of drawings
Fig. 1 is the schematic cross-section of a kind of embodiment of the present invention;
Fig. 2, the 3rd, the lead division bit architecture schematic diagram of signal transmission fiber of the present invention;
Fig. 4 is the structural representation of another embodiment of the present invention.
(5), specific embodiments
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
Embodiment one.In conjunction with Fig. 1, the fiber optical grating intelligent drag-line comprises the sheath 8 that steel wire or steel strand wires 5 are outer with wrapping in steel wire or steel strand wires, is laid with the fiber-optic grating sensor 7 that is combined into one with steel wire or steel strand wires in steel wire or steel strand wires along its length.Simultaneously in conjunction with Fig. 2,3, product of the present invention can adopt such method to make: at first, determine the position of fiber grating on drag-line, and the minimum length of calculating outlet optical cable, then fiber grating is used the high-performance adhesive placement on the steel wire of the drag-line of process polishing, and the residing position of mark grating.Temperature effect when considering the health monitoring of drag-line long service makes one of them unsettled in the fiber grating of laying, and only experiences temperature information, as temperature-compensating.Here must be noted that: temperature-compensating must place in the capillary metal tube with fiber grating, and unsettled, makes it be in the state that freely stretches.Subsequently, shape technology by drag-line fiber grating is entered poly drawing mould is housed with steel wire (or steel strand wires) Shu Yiqi, being shaped through pyrocondensation organically constitutes one with grating and drag-line.At last, behind the drag-line cutting forming, when drag-line adds ground tackle processing end, the signal light transmission cable is drawn from drag-line, and be connected with optical patchcord.Transmission cable can be drawn from honest anchor (or honest anchor of chill casting) or end conduit 4.They are achieved in that respectively at drawing situation from anchor head, at first open preformed hole 2 on anchor head, then Transmission Fibers are drawn, and place prefabricated protection box 3 interior getting final product; At the situation of drawing from conduit 4, on conduit, open preformed hole 4 in advance, consider that the rotation of conduit is installed, in advance the optical cable of drawing is wrapped on the PE sheath steel wire with certain number, treat that conduit is installed after, draw optical cable, and with protecting box 3 to protect.When to be surveyed, the signal light transmission cable drawn get final product.
Embodiment two.In conjunction with Fig. 4, the fiber optical grating intelligent drag-line comprises the capillary metal tube 10 and the signal light transmission cable 1 of drag-line 6, fiber-optic grating sensor 7,9, protection fiber-optic grating sensor 9 usefulness.Can adopt such method to make: the notch 11 that at first on drag-line 6, cuts out about 20 * 2cm carefully with steel knife, expose steel wire (or steel strand wires), the steel strand wires polishing that to expose with sand paper graduation then, and with the steel strand surface of acetone cleaning polishing, remove and consider end and grease to be worth doing.Afterwards, the fiber grating 7 and 9 that will weld with the adhesive of function admirable pastes appropriate position.Here must be noted that: temperature-compensating must place in the capillary metal tube with fiber grating 5, and unsettled, makes it be in the state that freely stretches.After fiber grating is laid, draw fiber grating transmission cable 1.Split the PE of notch place sheath according to cable body PE cover damage processing method at last and repair, its renovation technique process is: 1. notch cleans: clean with the PE section of solvent (acetone) to the excision notch; 2. notch is filled and welding: after treating solvent (acetone) volatilization fully, will fill otch (getting final product with cutting out material) with the PE bar of cable body PE sheath same material, and with plastic welding gun notch be welded then, and make notch seal fully.3. the weld bond outward appearance is handled according to the appearance color of cable body and the needs of mark sensing station, the notch after the welding is painted outward appearance handle, make it with cable body in outward appearance reaches consistent or contrast is bigger color.
Claims (9)
1, a kind of fiber optical grating intelligent drag-line, it comprises the sheath that steel wire or steel strand wires are outer with wrapping in steel wire or steel strand wires, it is characterized in that: be laid with the fiber-optic grating sensor that is combined into one with steel wire or steel strand wires along its length in steel wire or steel strand wires.
2, fiber optical grating intelligent drag-line according to claim 1 is characterized in that: string has the unsettled fiber grating of temperature-compensating in the fiber-optic grating sensor.
3, fiber optical grating intelligent drag-line according to claim 2 is characterized in that: the unsettled fiber grating of temperature-compensating is enclosed in the metal capillary admittedly.
4, according to claim 1,2 or 3 described fiber optical grating intelligent drag-lines, it is characterized in that: fiber-optic grating sensor is circumferential arrangement in the drag-line cross section.
5, according to claim 1,2 or 3 described fiber optical grating intelligent drag-lines, it is characterized in that: fiber-optic grating sensor is distributed in steel wire or steel strand wires outer surface.
6, fiber optical grating intelligent drag-line according to claim 4, it is characterized in that: the fiber-optic grating sensor signal transmission fiber is drawn from the anchor head end, has preformed hole on its anchor head end, goes out to be provided with the protection box in the position of drawing the signal output optical fibre.
7, fiber optical grating intelligent drag-line according to claim 5, it is characterized in that: the fiber-optic grating sensor signal transmission fiber is drawn from the anchor head end, has preformed hole on its anchor head end, goes out to be provided with the protection box in the position of drawing the signal output optical fibre.
8, fiber optical grating intelligent drag-line according to claim 4, it is characterized in that: the fiber-optic grating sensor signal transmission fiber is drawn from conduit, has preformed hole on its end of conduit, goes out to be provided with the protection box in the position of drawing the signal output optical fibre.
9, fiber optical grating intelligent drag-line according to claim 5, it is characterized in that: the fiber-optic grating sensor signal transmission fiber is drawn from conduit, has preformed hole on its end of conduit, goes out to be provided with the protection box in the position of drawing the signal output optical fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031325920A CN100342076C (en) | 2003-09-03 | 2003-09-03 | Optical fiber grating intelligent dragline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031325920A CN100342076C (en) | 2003-09-03 | 2003-09-03 | Optical fiber grating intelligent dragline |
Publications (2)
| Publication Number | Publication Date |
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| CN1590638A true CN1590638A (en) | 2005-03-09 |
| CN100342076C CN100342076C (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031325920A Expired - Fee Related CN100342076C (en) | 2003-09-03 | 2003-09-03 | Optical fiber grating intelligent dragline |
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| CN (1) | CN100342076C (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210983B (en) * | 2006-12-29 | 2010-12-22 | 柳州欧维姆机械股份有限公司 | Optical fiber grating intelligent steel strand and its manufacture method |
| CN102230834A (en) * | 2011-06-03 | 2011-11-02 | 大连理工大学 | Fiber grating cable tension transducer with temperature self-compensation function |
| CN101597869B (en) * | 2009-05-11 | 2011-11-02 | 东南大学 | Process for mass-producing distributed high-accuracy self-monitoring fiber reinforced polymer (FRP) bars/cables on basis of fiber-optic sensing |
| CN101701450B (en) * | 2009-09-30 | 2011-12-21 | 法尔胜集团公司 | Bridge intelligent cable system with built-in fiber grating sensor |
| CN104196258A (en) * | 2014-08-14 | 2014-12-10 | 北京市建筑工程研究院有限责任公司 | Post-tensioning prestressing intelligent reinforcement system based on fiber grating sensing technology |
| CN105628271A (en) * | 2014-11-06 | 2016-06-01 | 上海启鹏工程材料科技有限公司 | Fiber grating cable tension meter |
| CN105928646A (en) * | 2016-07-15 | 2016-09-07 | 重庆交通大学 | Method for monitoring performance degradation state of stay cable anchor head based on fiber distributed measurement |
| CN106381808A (en) * | 2016-11-06 | 2017-02-08 | 北京恒润生工程科技有限公司 | Intelligent drawing rope based on optical fiber Sagnac interferometer and preparation method of intelligent drawing rope |
| CN106525095A (en) * | 2016-11-07 | 2017-03-22 | 北京恒润生工程科技有限公司 | Fine core optical fiber sensing-based smart cable and preparation method thereof |
| CN106592428A (en) * | 2016-11-29 | 2017-04-26 | 北京恒润生工程科技有限公司 | Intelligent guy cable based on coreless optical fiber perception, and preparation method of intelligent guy cable |
| CN106801381A (en) * | 2017-03-06 | 2017-06-06 | 柳州欧维姆机械股份有限公司 | A kind of drag-line of conveniently monitoring fracture of wire and preparation method thereof |
| CN107076585A (en) * | 2015-08-27 | 2017-08-18 | 新日铁住金工程技术株式会社 | Cable and the introduction method that incipient extension strain is imported to optical fiber |
| CN107237261A (en) * | 2017-05-22 | 2017-10-10 | 北京恒润生工程科技有限公司 | Smart stay cable based on BOTDR and preparation method thereof |
| CN107587427A (en) * | 2017-08-23 | 2018-01-16 | 柳州欧维姆机械股份有限公司 | A kind of conveniently drag-line of detection internal corrosion environment and cable body corrosion condition |
| CN110835864A (en) * | 2018-08-15 | 2020-02-25 | 柳州汉西鸣建材发展有限公司 | Intelligent inhaul cable with replaceable monitoring element and manufacturing, installing and constructing method thereof |
| CN110847038A (en) * | 2019-12-22 | 2020-02-28 | 智性纤维复合加固南通有限公司 | Self-sensing parallel steel wire inhaul cable and manufacturing method thereof |
| CN110939062A (en) * | 2019-12-22 | 2020-03-31 | 智性纤维复合加固南通有限公司 | Self-sensing extrusion inhaul cable and manufacturing method thereof |
| CN111442735A (en) * | 2020-04-03 | 2020-07-24 | 广西大学 | Method for manufacturing polymer rubber-insulated-wire fiber grating strain sensor and intelligent cable |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182779A (en) * | 1990-04-05 | 1993-01-26 | Ltv Aerospace And Defense Company | Device, system and process for detecting tensile loads on a rope having an optical fiber incorporated therein |
| CN2549430Y (en) * | 2002-05-30 | 2003-05-07 | 欧进萍 | Optical fiber raster capillary packed strain gauge |
| CN1166921C (en) * | 2002-08-29 | 2004-09-15 | 武汉理工大学 | Monitoring method of long-period working state of optical fibre grating anchor wire and its equipment |
-
2003
- 2003-09-03 CN CNB031325920A patent/CN100342076C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210983B (en) * | 2006-12-29 | 2010-12-22 | 柳州欧维姆机械股份有限公司 | Optical fiber grating intelligent steel strand and its manufacture method |
| CN101597869B (en) * | 2009-05-11 | 2011-11-02 | 东南大学 | Process for mass-producing distributed high-accuracy self-monitoring fiber reinforced polymer (FRP) bars/cables on basis of fiber-optic sensing |
| CN101701450B (en) * | 2009-09-30 | 2011-12-21 | 法尔胜集团公司 | Bridge intelligent cable system with built-in fiber grating sensor |
| CN102230834A (en) * | 2011-06-03 | 2011-11-02 | 大连理工大学 | Fiber grating cable tension transducer with temperature self-compensation function |
| CN104196258A (en) * | 2014-08-14 | 2014-12-10 | 北京市建筑工程研究院有限责任公司 | Post-tensioning prestressing intelligent reinforcement system based on fiber grating sensing technology |
| CN105628271A (en) * | 2014-11-06 | 2016-06-01 | 上海启鹏工程材料科技有限公司 | Fiber grating cable tension meter |
| CN107076585B (en) * | 2015-08-27 | 2020-03-13 | 新日铁住金工程技术株式会社 | Cable and method for introducing initial tensile strain into optical fiber |
| CN107076585A (en) * | 2015-08-27 | 2017-08-18 | 新日铁住金工程技术株式会社 | Cable and the introduction method that incipient extension strain is imported to optical fiber |
| CN105928646A (en) * | 2016-07-15 | 2016-09-07 | 重庆交通大学 | Method for monitoring performance degradation state of stay cable anchor head based on fiber distributed measurement |
| CN105928646B (en) * | 2016-07-15 | 2018-07-24 | 重庆交通大学 | Suspension cable anchor head performance degradation state monitoring method based on distributed fiber optic sensing |
| CN106381808A (en) * | 2016-11-06 | 2017-02-08 | 北京恒润生工程科技有限公司 | Intelligent drawing rope based on optical fiber Sagnac interferometer and preparation method of intelligent drawing rope |
| CN106525095A (en) * | 2016-11-07 | 2017-03-22 | 北京恒润生工程科技有限公司 | Fine core optical fiber sensing-based smart cable and preparation method thereof |
| CN106592428A (en) * | 2016-11-29 | 2017-04-26 | 北京恒润生工程科技有限公司 | Intelligent guy cable based on coreless optical fiber perception, and preparation method of intelligent guy cable |
| CN106801381A (en) * | 2017-03-06 | 2017-06-06 | 柳州欧维姆机械股份有限公司 | A kind of drag-line of conveniently monitoring fracture of wire and preparation method thereof |
| CN107237261A (en) * | 2017-05-22 | 2017-10-10 | 北京恒润生工程科技有限公司 | Smart stay cable based on BOTDR and preparation method thereof |
| CN107587427A (en) * | 2017-08-23 | 2018-01-16 | 柳州欧维姆机械股份有限公司 | A kind of conveniently drag-line of detection internal corrosion environment and cable body corrosion condition |
| CN110835864A (en) * | 2018-08-15 | 2020-02-25 | 柳州汉西鸣建材发展有限公司 | Intelligent inhaul cable with replaceable monitoring element and manufacturing, installing and constructing method thereof |
| CN110847038A (en) * | 2019-12-22 | 2020-02-28 | 智性纤维复合加固南通有限公司 | Self-sensing parallel steel wire inhaul cable and manufacturing method thereof |
| CN110939062A (en) * | 2019-12-22 | 2020-03-31 | 智性纤维复合加固南通有限公司 | Self-sensing extrusion inhaul cable and manufacturing method thereof |
| CN111442735A (en) * | 2020-04-03 | 2020-07-24 | 广西大学 | Method for manufacturing polymer rubber-insulated-wire fiber grating strain sensor and intelligent cable |
| CN111442735B (en) * | 2020-04-03 | 2022-05-31 | 广西大学 | Method for manufacturing polymer rubber-insulated-wire fiber grating strain sensor and intelligent cable |
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| CN100342076C (en) | 2007-10-10 |
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