CN200997009Y - Optical fibre and grating intelligent steel twist joint - Google Patents
Optical fibre and grating intelligent steel twist joint Download PDFInfo
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- CN200997009Y CN200997009Y CN 200620170197 CN200620170197U CN200997009Y CN 200997009 Y CN200997009 Y CN 200997009Y CN 200620170197 CN200620170197 CN 200620170197 CN 200620170197 U CN200620170197 U CN 200620170197U CN 200997009 Y CN200997009 Y CN 200997009Y
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Abstract
An intelligent optical fiber raster stranded wire, which is made via the twisting of a central hair and the edges. The central hair belongs to the compound and intelligent fibrous reinforcement hair with the optical fiber grating sensor.
Description
Technical field:
The utility model relates to a kind of intelligent steel strand that is applied to prestress engineering structure such as bowstring arch bridge, cable-stayed bridge, suspension bridge, external tendon, earth anchor etc., specifically a kind of have from perceptibility can and the intelligent steel strand of on-line real time monitoring function.
Background technology:
Steel strand wires are the single-strand ropes that formed by many steel wire twistings, are used as structural elements such as concrete pre-stress muscle, bridge cable and ground anchor cable widely.It is the crucial primary structure member in these structures, and its duty during one's term of military service is directly connected to the safety of structure.Generally speaking, steel strand wires are subjected to the influence of abominable working environment, and the corrosion deterioration that gets rusty easily threatens structure safety during one's term of military service.Therefore, how realizing the real-time monitoring to steel strand wires long-term work state, guarantee safety in the operating period, is the key of prestressing technique development.
Traditional test monitoring means exists that precision is low, poor operability, is subjected to that disturbing effect is big, poor stability, can not realizes shortcoming such as on-line real time monitoring, uses them prestress wire is monitored, and often is difficult to achieve the goal.The fiber-optic grating sensor that immediate development is got up is a kind of sensitive element of function admirable, and it can be responded to extraneous minimal stress variation by moving of bragg reflection wavelength and realize the structural strain on-line measurement.It not only has the rugged surroundings of not being afraid of, be not subjected to ambient noise interference, anti-electromagnetic interference (EMI), collection sensing be transmitted in one, simple structure, advantage such as easy to use, but also have the advantage that can carry out high precision absolute measurement, quasi-distributed digital measurement to the strain of structure.Fiber grating sensing technology provides the good technical means for realizing steel strand wires on-line real time monitoring purpose, can satisfy the technical requirement of the high precision and the chronicity of present steel strand wires safety monitoring.But fiber-optic grating sensor also has its deficiency, and it is relatively more fragile, and shear resistance is relatively poor, needs special protection during application.Therefore fiber-optic grating sensor is applied to steel strand wires, its installation technics is a key.
The utility model content:
The technical problems to be solved in the utility model is: a kind of optical fiber grating intelligent steel strand with self-sensing properties is provided; that fiber-optic grating sensor is applied in the steel strand wires existing fiber-optic grating sensor is relatively more fragile to solve; shear resistance is relatively poor, needs problem and this key technical problem of installation technics of special protection during application.
The technical scheme that solves the problems of the technologies described above is: a kind of optical fiber grating intelligent steel strand, constitute by central hair with around the limit silk twisting moulding that central hair twines, described central hair is the fiber grating fiber-reinforced composite intelligence muscle that contains fiber-optic grating sensor, and the fiber-optic grating sensor Transmission Fibers is drawn from the steel strand wires end; Described fiber grating fiber-reinforced composite intelligence muscle, the optical fiber and the fiber-optic grating sensor that comprise fiber reinforced rebar and in fiber reinforced rebar, distribute along its length, be with plastics pine sleeve pipe outside the optical fiber of non-grating section, this plastics pine sleeve pipe and fiber reinforced rebar are connected.
Further technical scheme of the present utility model is: string has the temperature compensation optical fiber grating sensor in the described fiber grating fiber-reinforced composite intelligence muscle, the outside diameter d 2 of intelligent rib end that contains the temperature compensation optical fiber grating sensor is less than the outside diameter d 1 at intelligent muscle middle part, be with a metal tube outside it, this intelligent rib end that contains temperature compensation optical fiber grating is unsettled.
Because adopt said structure, the optical fiber grating intelligent steel strand of the utility model has following beneficial effect:
One, can protect optical fiber and fiber-optic grating sensor effectively:
The fiber grating fiber-reinforced composite intelligence muscle that constitutes the utility model optical fiber grating intelligent steel strand central hair comprises that fiber reinforced rebar reaches optical fiber and the fiber-optic grating sensor that distributes along its length in fiber reinforced rebar, sleeving plastic pine sleeve pipe outside the optical fiber of non-grating section, isolating optical fiber links to each other with fiber reinforced rebar, help the lead-in wire operation, can not damage optical fiber; Its temperature compensation is to adopt containing the intelligent rib end of temperature compensation optical fiber grating sensor, and levigate back overcoat metal tube makes the intelligent rib end that contains the temperature compensation optical fiber grating sensor unsettled, freely stretches.Thereby overcome in the prior art optical fiber and fiber reinforced plastic rod is directly bonding, fused fiber splice lead-in wire operation in the muscle, the flimsy problem of the existing grating sensor of the unsettled cover metal tube of optical fiber structure of damaging the problem of optical fiber easily and will containing grating sensor.
Two, the utility model optical fiber grating intelligent steel strand organically combines fiber-optic grating sensor, fiber reinforced rebar and steel strand wires high tensile steel wire, has solved preferably fiber-optic grating sensor is applied to the protection problem of ordinary steel twisted wire and the problem of installation technics.
The utility model optical fiber grating intelligent steel strand constitutes by central hair with around the limit silk twisting moulding that central hair twines, described central hair is the above-mentioned fiber grating fiber-reinforced composite intelligence muscle that contains fiber-optic grating sensor of the utility model, and the fiber-optic grating sensor Transmission Fibers is drawn from the steel strand wires end.
Fiber reinforced rebar is a perfectly elastic material, has intensity height, light weight, anti-creep, endurance, excellent properties such as corrosion-resistant, machine-shaping easily simultaneously, and can imbed fiber-optic grating sensor easily in the manufacturing process.The fiber grating fiber-reinforced composite intelligence muscle that will contain fiber-optic grating sensor is as steel strand wires central hair, make steel strand wires possess self-sensing properties, its sensing characteristics has all advantages of fiber grating: as sensing accuracy height (can reach 1～2 μ ε), anti-electromagnetic interference (EMI), quasi-distributed sensing, absolute measurement, stability and good endurance etc., can grasp steel strand wires easily at construction and stressing conditions during one's term of military service, thereby can instruct prestressed stretch-draw and construction, and provide direct information for the damage of military service steel strand wires identification.
The fiber grating fiber reinforcement intelligent steel strand that the apperceive characteristic of mechanical property, steel strand wires loading characteristic and the Fiber Bragg Grating FBG of the utility model binding fiber enhancing rib reinforced composite material is developed can be widely used in the engineering structure that cable-stayed bridge, suspension bridge, suspension rod arch bridge, cable, earth anchor, prestress wire etc. need prestressed component.
Below, the technical characterictic to the optical fiber grating intelligent steel strand of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings:
Fig. 1～Fig. 2: the utility model optical fiber grating intelligent steel strand structural representation:
Fig. 1: stereographic map, Fig. 2: cross-sectional configuration synoptic diagram;
Fig. 3: one of the utility model fiber grating fiber-reinforced composite intelligence muscle structural representation---be that fiber-optic grating sensor is laid synoptic diagram in the fiber-reinforced composite muscle;
Fig. 4: two of the utility model fiber grating fiber-reinforced composite intelligence muscle structural representation---the fiber-optic grating sensor that promptly has temperature compensation function is laid synoptic diagram in the fiber-reinforced composite muscle.
Among the figure:
The 1-steel strand wires, 2-fiber grating fiber-reinforced composite intelligence muscle, the 3-steel wire,
21-optical fiber, 22-fiber reinforced rebar, 23-plastics pine sleeve pipe, 24-fiber-optic grating sensor, 25
1, 25
2-temperature compensation optical fiber grating sensor, 26
1, 26
2-fiber grating fiber-reinforced composite intelligent rib end, the 27-metal tube.
Embodiment:
A kind of optical fiber grating intelligent steel strand.
This intelligent steel strand, constitute by central hair with around the limit silk twisting moulding that central hair twines, described limit silk is common high tensile steel wire 3, described central hair is to contain the fiber grating fiber-reinforced composite intelligence muscle 2 of fiber-optic grating sensor (referring to Fig. 1, Fig. 2), this intelligence muscle 2 comprises fiber reinforced rebar 22 and the optical fiber 21 and the fiber-optic grating sensor 24 that distribute along its length in fiber reinforced rebar, outside the optical fiber of non-grating section, be with plastics pine sleeve pipe 23, optical fiber isolated by this plastics pine sleeve pipe 23 and fiber reinforced rebar 22 is connected, and fiber-optic grating sensor Transmission Fibers 21 is drawn (referring to Fig. 3) from the steel strand wires end.
As a kind of conversion of the utility model embodiment, temperature compensation optical fiber grating sensor 25 is arranged as string in the fiber grating fiber-reinforced composite intelligence muscle 2 of central hair
1, 25
2, contain temperature compensation optical fiber grating sensor 25
1, 25
2Intelligent rib end 26
1, 26
2 Outside diameter d 2 less than the outside diameter d 1 of intelligent muscle, its outer metal tube 27 that is with, between intelligence muscle and the metal tube cementing agent is arranged---can adopt and overlap behind metal tube or the metal pipe box muscle adding additives again behind the intelligent muscle coating adhesive again, this contains temperature compensation optical fiber grating sensor 25
1, 25
2Intelligent rib end unsettled (referring to Fig. 4).
Another conversion as the utility model embodiment, fiber grating fiber-reinforced composite intelligence muscle 2 as central hair can also be the fiber grating fiber-reinforced composite intelligence muscle that only contains a temperature compensation optical fiber grating sensor, the outside diameter d 2 of intelligent rib end that contains this temperature compensation optical fiber grating sensor is less than the outside diameter d 1 of intelligent muscle, be with the metal tube of end closure one by one outside it, the intelligent rib end that contains the temperature compensation optical fiber grating sensor is unsettled.
As another conversion of the utility model embodiment, at described central hair---the surface of having imbedded the fiber-reinforced composite intelligence muscle of fiber-optic grating sensor is coated with a layer binder.
Claims (4)
1, a kind of optical fiber grating intelligent steel strand constitutes by central hair with around the limit silk twisting moulding that central hair twines, and it is characterized in that: described central hair is the fiber grating fiber-reinforced composite intelligence muscle that contains fiber-optic grating sensor.
2, optical fiber grating intelligent steel strand according to claim 1, it is characterized in that: described fiber grating fiber-reinforced composite intelligence muscle, the optical fiber and the fiber-optic grating sensor that comprise fiber reinforced rebar and in fiber reinforced rebar, distribute along its length, outside the optical fiber of non-grating section, be with plastics pine sleeve pipe, optical fiber isolated by this plastics pine sleeve pipe and fiber reinforced rebar is connected, and the fiber-optic grating sensor Transmission Fibers is drawn from the steel strand wires end.
3, optical fiber grating intelligent steel strand according to claim 2, it is characterized in that: the intelligent rib end that contains fiber-optic grating sensor of this fiber grating fiber-reinforced composite intelligence muscle contains the temperature compensation optical fiber grating sensor, contain the outside diameter d 1 of the intelligent rib end outside diameter d 2 of temperature compensation optical fiber grating sensor less than intelligent muscle, be with a metal tube outside it, this intelligent rib end that contains the temperature compensation optical fiber grating sensor is unsettled.
4, according to claim 1 or 2 or 3 described optical fiber grating intelligent steel strands, it is characterized in that: at described central hair---the surface of having imbedded the fiber-reinforced composite intelligence muscle of fiber-optic grating sensor is coated with a layer binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620170197 CN200997009Y (en) | 2006-12-29 | 2006-12-29 | Optical fibre and grating intelligent steel twist joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620170197 CN200997009Y (en) | 2006-12-29 | 2006-12-29 | Optical fibre and grating intelligent steel twist joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200997009Y true CN200997009Y (en) | 2007-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620170197 Expired - Lifetime CN200997009Y (en) | 2006-12-29 | 2006-12-29 | Optical fibre and grating intelligent steel twist joint |
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|---|---|
| CN (1) | CN200997009Y (en) |
Cited By (7)
| 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 |
| CN105403339A (en) * | 2015-12-15 | 2016-03-16 | 中国电建集团中南勘测设计研究院有限公司 | Anchor pole force measuring apparatus, anchor pole and anchor pole tension measuring method |
| CN106291852A (en) * | 2016-09-28 | 2017-01-04 | 广西大学 | A kind of Intelligent Composite muscle of built-in fiber bragg grating |
| CN106405762A (en) * | 2016-09-28 | 2017-02-15 | 广西大学 | Smart steel strand capable of distributable measurement |
| 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 |
| 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 |
| 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 |
-
2006
- 2006-12-29 CN CN 200620170197 patent/CN200997009Y/en not_active Expired - Lifetime
Cited By (8)
| 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 |
| CN105403339A (en) * | 2015-12-15 | 2016-03-16 | 中国电建集团中南勘测设计研究院有限公司 | Anchor pole force measuring apparatus, anchor pole and anchor pole tension measuring method |
| CN106291852A (en) * | 2016-09-28 | 2017-01-04 | 广西大学 | A kind of Intelligent Composite muscle of built-in fiber bragg grating |
| CN106405762A (en) * | 2016-09-28 | 2017-02-15 | 广西大学 | Smart steel strand capable of distributable measurement |
| 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 |
| 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 |
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20071226 Effective date of abandoning: 20061229 |