CN100335714C - Intelligent rope with grating and fibre-optical fibre and enhanced resin rib - Google Patents
Intelligent rope with grating and fibre-optical fibre and enhanced resin rib Download PDFInfo
- Publication number
- CN100335714C CN100335714C CNB2004100440578A CN200410044057A CN100335714C CN 100335714 C CN100335714 C CN 100335714C CN B2004100440578 A CNB2004100440578 A CN B2004100440578A CN 200410044057 A CN200410044057 A CN 200410044057A CN 100335714 C CN100335714 C CN 100335714C
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- Prior art keywords
- fiber
- drag
- grating
- fibre
- grating sensor
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- 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
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- 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
- D07B2201/2096—Light guides
-
- 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
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2015—Construction industries
- D07B2501/203—Bridges
Abstract
The present invention provides an intelligent drag rope with optical fibre and optical grating fibre reinforced resin ribs, which comprises a drag rope composed of fibre reinforced ribs and fibre reinforced ribs with optical fibre and optical grating sensors, wherein the fibre reinforced ribs with the optical fibre and optical grating sensors are distributed in the reinforced ribs, a sheath is covered outside the drag rope, and the end part of the drag rope is provided with an anchor head. The drag rope, the optical fibre and optical grating, and the reinforced ribs are organically combined, excepting for having the characteristics of high strength, light quality, creep resistance, corrosion resistance, etc. of the fibre reinforced ribs, the present invention has all advantages of the optical fibre and optical grating. The present invention can be widely used for engineering structure needed drag rope members, such as, cable-stayed bridges, suspension bridges, suspension rod arc bridges, hawsers, etc.
Description
(1) technical field
What the present invention relates to is a kind of smart stay cable that is used for guy systems such as bowstring arch bridge, cable-stayed bridge, suspension bridge, cable, specifically a kind of high strength, lightweight, endurance, corrosion-resistant and drag-line with on-line real time monitoring function.
(2) background technology
The members such as cable of the drag-line of cable-stayed bridge, the suspension rod of bowstring arch bridge, suspension bridge and cableway are the isostructural core components of bridge, cableway, have the title of " lifeline ".The corrosion and fatigue damage because the influence of environment, current wire digging line get rusty easily, the military service phase is often than the much shorter that designs in advance.In recent years, the breakdown of drag-line and change the example of rope happened occasionally both at home and abroad.The rope expense of changing of drag-line is very high, and is general at more than a times of former bridge total cost, is 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.We can say that the damage of drag-line will cause massive losses economically, even can bring huge disaster therefore how the development of new drag-line is an of crucial importance and urgent problem that needs solution to the mankind.
On the other hand, how realizing the real-time monitoring to drag-line long-term work state, guarantee operating period inhaul safe operation, also is the key of drag-line technical development.At present the main technology such as acceleration test, corrosion detections, magnetosphere detection that adopt are estimated in the forces testing and the damage of rope, these technology exist that precision is low, poor operability, be subjected to interference effect greatly, poor stability, can not realize shortcoming such as on-line real time monitoring.Therefore, the forces testing of drag-line and lesion assessment are needed reliable means of testing and technology badly.
(3) summary of the invention
The object of the present invention is to provide a kind of fiber grating fibre reinforced resin rib smart stay cable with intelligent characteristic.
The object of the present invention is achieved like this: it comprises the drag-line of being made up of fiber reinforced rebar and the fiber reinforced rebar that contains fiber-optic grating sensor, the fiber reinforced rebar that contains fiber-optic grating sensor is distributed in the fiber reinforced rebar, cover sheath outside drag-line, the end of drag-line has anchor head.
The present invention can also comprise some architectural features like this:
1, the light grating sensor that is provided with in containing the fiber reinforced rebar of fiber-optic grating sensor comprises monitoring fiber-optic grating sensor and temperature compensation optical fiber grating sensor, and wherein temperature compensation optical fiber grating is unsettled is encapsulated in the metal capillary.
2, the signal transmission fiber that contains the fiber reinforced rebar of fiber-optic grating sensor is drawn from the anchor head end, and its anchor head end has preformed hole.
3, the signal transmission fiber that contains the fiber reinforced rebar of fiber-optic grating sensor is drawn from the anchor head conduit, has preformed hole on its conduit.
4, be provided with the protection box at the preformed hole place of drawing signal transmission fiber.
5, contain the fiber reinforced rebar of fiber-optic grating sensor in centre, drag-line cross section and circumferential arrangement.
Fibre reinforced composites have excellent properties such as lightweight, high-strength, not corrosion, corrosion-resistant, endurance, are the competent materials of novel guy system.
The fiber grating sensing technology that immediate development is got up provides the good technical means for realizing drag-line on-line real time monitoring purpose, can satisfy the high accuracy of present drag-line monitoring and the specification requirement of chronicity.
The fiber grating fiber reinforcement intelligence rope that the loading characteristic of the physico mechanical characteristic of binding fiber strength bar of the present invention, the apperceive characteristic of Fiber Bragg Grating FBG and drag-line is developed.
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, its outstanding advantage is: 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.
Fiber reinforced rebar has intensity height, light weight, anti-creep, endurance, excellent properties such as corrosion-resistant, and machine-shaping easily, can imbed fiber-optic grating sensor easily.
The present invention organically combines fiber grating, fiber reinforced rebar and drag-line, make outside having fibre-reinforced high strength, lightweight, anti-creep, characteristic such as corrosion-resistant, all advantages that possessed fiber grating: as sensing accuracy height (can reach 1～2 μ ε), anti-electromagnetic interference, quasi-distributed sensing, absolute measurement, stability and good endurance etc., can grasp drag-line easily at construction and stressing conditions during one's term of military service, 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 interior tendon 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 that adaptive stay cable structure extensive style is constructed, and opens the good sensor performance of giving full play to 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 grating fiber reinforcement intelligence rope that the apperceive characteristic of the mechanical property of binding fiber strength bar composite of the present invention, drag-line loading characteristic and Fiber Bragg Grating FBG is developed 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 diagram that contains the fiber reinforced rebar of fiber-optic grating sensor of the present invention;
Fig. 2 is the schematic cross-section of a kind of embodiment of the present invention;
Fig. 3 is that the fiber grating of embodiment of the present invention is arranged schematic diagram;
Fig. 4 and Fig. 5 are the lead division bit architecture schematic diagrames of two kinds of signal transmission fibers of the present invention;
Fig. 6 is the cutaway view of Fig. 1.
(5) specific embodiments
For a more detailed description to the present invention for example below in conjunction with accompanying drawing:
In conjunction with Fig. 2, the composition of fiber optical grating intelligent drag-line comprises that drag-line covers sheath 4 outward by the drag-line of fiber reinforced rebar 2 that contains fiber-optic grating sensor and fiber reinforced rebar 3 combination formings.The end of drag-line has anchor head.Simultaneously in conjunction with Fig. 1 and Fig. 7, contain in the fiber reinforced rebar of fiber-optic grating sensor and be embedded with fiber-optic grating sensor 1.In conjunction with Fig. 3, the light grating sensor that is provided with in containing the fiber reinforced rebar of fiber-optic grating sensor comprises monitoring fiber-optic grating sensor 6 and temperature compensation optical fiber grating sensor 7 simultaneously, and wherein temperature compensation optical fiber grating is unsettled is encapsulated in the metal capillary 8.In conjunction with Fig. 5 and Fig. 6, the anchor head of stay cable end can have two kinds of forms: a kind of is that the signal transmission fiber that contains the fiber reinforced rebar of fiber-optic grating sensor is drawn from the anchor head end, its anchor head end has preformed hole 9, is provided with protection box 10 at the preformed hole place of drawing signal transmission fiber; Another kind is that the signal transmission fiber that contains the fiber reinforced rebar of fiber-optic grating sensor is drawn from anchor head conduit 11, has preformed hole 9 on its conduit, is provided with protection box 10 at the preformed hole place of drawing signal transmission fiber.The fiber reinforced rebar that contains fiber-optic grating sensor is in centre, drag-line cross section and circumferential arrangement.
Product of the present invention can adopt following method to make:
1) cutting length of calculating drag-line fiber reinforced rebar 2, determine the position of fiber-optic grating sensor on the drag-line length direction, and calculate the minimum length that exports optical cable, and then the fiber grating 1 of appropriate length is followed fiber tractive together, adopt hot extrusion to make the fiber reinforced rebar 2 that contains fiber grating.Consider the temperature effect during the drag-line military service is monitored, in the fiber grating of laying 6,7, make one of them unsettled, only experience temperature information, as temperature-compensating.Should be noted that: temperature-compensating must place in the capillary metal tube 8 with grating 7, and unsettled, makes it be in the state that freely stretches.
2) adopt hot extrusion to make fiber reinforced rebar 3, and block on demand;
3) according to imbedding the fiber grating fiber reinforced rebar, follow fiber reinforced rebar 3 combinations to be compiled into regular hexagon or the orthohexagonal drag-line of unfilled corner the fiber reinforced rebar 2 of imbedding fiber grating in the preferred arrangement figure in drag-line cross section (see figure 2).
3), by hot extrude high density polyethylene (HDPE) protection or add other sheath 4 protection, form smart stay cable 5 with the drag-line that weaves.
4) when drag-line adds the complete processing of ground tackle, signal light transmission cable 1 is drawn from drag-line, and be connected with optical patchcord.Transmission cable can be drawn from anchor end conduit.They can be realized with following method respectively:
At drawing situation from anchor head, at first open preformed hole 9 at anchor head, then Transmission Fibers 1 is drawn, and place prefabricated protection box 10 interior getting final product;
At drawing situation from conduit, on conduit 11, open preformed hole 9 in advance, draw optical cable 1, and protect with protection box 10.When to be surveyed, signal light transmission cable 1 drawn get final product.
Smart stay cable is state evaluation during one's term of military service: adopt the verification coefficient to evaluate the user mode of drag-line
Under the normal operating position, the verification coefficient is less than 1, and more little safe more; When the verification coefficient near or more than or equal to 1 the time, think that drag-line has reached limiting condition.
Claims (10)
1, a kind of fiber grating fibre reinforced resin rib smart stay cable, it is characterized in that: it comprises the drag-line of being made up of fiber reinforced rebar and the fiber reinforced rebar that contains fiber-optic grating sensor, the fiber reinforced rebar that contains fiber-optic grating sensor is distributed in the fiber reinforced rebar, cover sheath outside drag-line, the end of drag-line has anchor head.
2, fiber grating fibre reinforced resin rib smart stay cable according to claim 1, it is characterized in that: the light grating sensor that is provided with in containing the fiber reinforced rebar of fiber-optic grating sensor comprises monitoring fiber-optic grating sensor and temperature compensation optical fiber grating sensor, and wherein temperature compensation optical fiber grating is unsettled is encapsulated in the metal capillary.
3, fiber grating fibre reinforced resin rib smart stay cable according to claim 1 and 2, it is characterized in that: the signal transmission fiber that contains the fiber reinforced rebar of fiber-optic grating sensor is drawn from the anchor head end, and its anchor head end has preformed hole.
4, fiber grating fibre reinforced resin rib smart stay cable according to claim 1 and 2, it is characterized in that: the signal transmission fiber that contains the fiber reinforced rebar of fiber-optic grating sensor is drawn from the anchor head conduit, has preformed hole on its conduit.
5, fiber grating fibre reinforced resin rib smart stay cable according to claim 3 is characterized in that: be provided with the protection box at the preformed hole place of drawing signal transmission fiber.
6, fiber grating fibre reinforced resin rib smart stay cable according to claim 4 is characterized in that: be provided with the protection box at the preformed hole place of drawing signal transmission fiber.
7, fiber grating fibre reinforced resin rib smart stay cable according to claim 1 and 2 is characterized in that: the fiber reinforced rebar that contains fiber-optic grating sensor is in centre, drag-line cross section and circumferential arrangement.
8, fiber grating fibre reinforced resin rib smart stay cable according to claim 3 is characterized in that: the fiber reinforced rebar that contains fiber-optic grating sensor is in centre, drag-line cross section and circumferential arrangement.
9, fiber grating fibre reinforced resin rib smart stay cable according to claim 4 is characterized in that: the fiber reinforced rebar that contains fiber-optic grating sensor is in centre, drag-line cross section and circumferential arrangement.
10, fiber grating fibre reinforced resin rib smart stay cable according to claim 5 is characterized in that: the fiber reinforced rebar that contains fiber-optic grating sensor is in centre, drag-line cross section and circumferential arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100440578A CN100335714C (en) | 2004-11-17 | 2004-11-17 | Intelligent rope with grating and fibre-optical fibre and enhanced resin rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100440578A CN100335714C (en) | 2004-11-17 | 2004-11-17 | Intelligent rope with grating and fibre-optical fibre and enhanced resin rib |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1779067A CN1779067A (en) | 2006-05-31 |
| CN100335714C true CN100335714C (en) | 2007-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100440578A Expired - Fee Related CN100335714C (en) | 2004-11-17 | 2004-11-17 | Intelligent rope with grating and fibre-optical fibre and enhanced resin rib |
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| CN (1) | CN100335714C (en) |
Families Citing this family (11)
| 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 |
| 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 |
| CN102121229B (en) * | 2010-12-31 | 2015-07-08 | 上海浦江缆索股份有限公司 | Method for manufacturing pull rope of measurable rope force |
| CN102359026A (en) * | 2011-08-30 | 2012-02-22 | 祝向辉 | Intelligent semi-parallel steel wire stay cable with plastic sheath and manufacturing method thereof |
| CN104535234B (en) * | 2014-12-29 | 2017-02-01 | 大连理工大学 | Optical fiber inhaul cable prestress monitoring method and sensor thereof |
| CN105716758A (en) * | 2016-05-05 | 2016-06-29 | 智性纤维复合加固南通有限公司 | Intelligent carbon board prepared from fiber reinforced plastics and preparation method of intelligent carbon board |
| CN106400553A (en) * | 2016-11-04 | 2017-02-15 | 北京恒润生工程科技有限公司 | Intelligent inhaul cable based on fiber bragg grating sensing and preparation method thereof |
| 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 |
| CN109747067B (en) * | 2017-07-14 | 2021-09-21 | 山东大学 | Preparation method of intelligent plastic pipeline |
| CN109958056A (en) * | 2019-04-15 | 2019-07-02 | 武汉地震工程研究院有限公司 | Smart stay cable, smart stay cable preparation method and smart stay cable safe condition detection method |
| CN114910031B (en) * | 2022-06-27 | 2023-07-04 | 重庆交通大学 | Suspension bridge health monitoring method, system, computer equipment and storage medium |
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|---|---|---|---|---|
| CN1484056A (en) * | 2002-09-19 | 2004-03-24 | 欧进萍 | Fibre reinforced plastics-optical fibre grating lombined sensor |
| CN2622288Y (en) * | 2003-04-29 | 2004-06-30 | 南京奥沃科技发展有限公司 | Fibre reinforced plastic rib |
| CN2627479Y (en) * | 2003-05-30 | 2004-07-21 | 周智 | Distributed optical fibre grating packaging temperature sensor |
-
2004
- 2004-11-17 CN CNB2004100440578A patent/CN100335714C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1484056A (en) * | 2002-09-19 | 2004-03-24 | 欧进萍 | Fibre reinforced plastics-optical fibre grating lombined sensor |
| CN2622288Y (en) * | 2003-04-29 | 2004-06-30 | 南京奥沃科技发展有限公司 | Fibre reinforced plastic rib |
| CN2627479Y (en) * | 2003-05-30 | 2004-07-21 | 周智 | Distributed optical fibre grating packaging temperature sensor |
Non-Patent Citations (2)
| Title |
|---|
| 光纤光栅传感技术在桥梁结构健康检测中的作用 王丹生，朱宏平，中外公路，第22卷第6期 2002 * |
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| Publication number | Publication date |
|---|---|
| CN1779067A (en) | 2006-05-31 |
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Granted publication date: 20070905 Termination date: 20131117 |