CN201010859Y - Intelligent bridge inhaul cable - Google Patents
Intelligent bridge inhaul cable Download PDFInfo
- Publication number
- CN201010859Y CN201010859Y CNU2007200899234U CN200720089923U CN201010859Y CN 201010859 Y CN201010859 Y CN 201010859Y CN U2007200899234 U CNU2007200899234 U CN U2007200899234U CN 200720089923 U CN200720089923 U CN 200720089923U CN 201010859 Y CN201010859 Y CN 201010859Y
- Authority
- CN
- China
- Prior art keywords
- anchor head
- cable
- steel wire
- stress
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- 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
- D07B2301/25—System input signals, e.g. set points
- D07B2301/252—Temperature
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2301/00—Controls
- D07B2301/25—System input signals, e.g. set points
- D07B2301/259—Strain or elongation
-
- 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
-
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to an intelligent bridge inhaul cable which comprises an anchor head, a cable body that is connected with the anchor head. A protecting cylinder is arranged outside connecting section of anchor head, and three or more optical fiber raster sensors are arranged uniformly on outer steel wire of steel bundle inside the protecting cylinder. By arranging optical fiber raster sensor, central wavelength of narrow band light that the raster reflects changes correspondingly as the stress and temperature that the cable steel wire bearing change, and light is transferred to the wavelength demodulation device through a light couple sensor so as to reflect the stress and the temperature that the steel wire stand, and at last a computer analyzes and stores the information and the measuring value is displayed on the computer. The utility model can detect the stress and the fatigue continuously, thus the utility model brings convenience for the bridge managers during understanding the working condition of the inhaul cable.
Description
Technical field
Should relate to a kind of drag-line that is used for bridge engineering with novel.
Technical background
At present, the drag-line that most of bridge engineering is used itself does not all dispose Suo Li and fatigue state monitoring device, mainly uses dynamometer to test drawing cable force.The sensing principle that traditional dynamometer adopts mainly contains differential resistance type, steel chord type and resistance-strain chip etc.From measuring accuracy and short-term test aspect, it can satisfy the application on the engineering, but its long-time stability are bad, can't carry out on-line monitoring to drag-line, causes the bridge manager can not in time grasp the working condition of drag-line.
Summary of the invention
The purpose of this utility model provides a kind of intelligent drag-line, can realize high-precision monitoring steady in a long-term to the size of self Suo Li and variation and fatigue conditions, for the maintenance of bridge cable provides foundation, guarantees bridge security.
The purpose of this utility model is achieved in that a kind of intelligent bridge cable, comprises anchor head and the cable body that is connected with anchor head, is provided with casing outward with the cable body of anchor head connecting portion, and the steel tendon cover wire in the casing is provided with fiber Bragg grating strain sensor.
Described fiber Bragg grating strain sensor is provided with more than three or three.
Described fiber Bragg grating strain sensor is in the outer evenly layout of steel tendon.
Described fiber grating strain device directly is bonded in Steel Wire Surface.
Because the utility model is provided with the fiber grating strain device in Steel Wire Surface, like this when the suffered stress of drag-line steel wire or temperature change, corresponding variation can take place in the narrow band light centre wavelength of optical grating reflection, be sent to wavelength demodulation device through photo-coupler, thereby reflect corresponding stress or variations in temperature that steel wire is suffered, do analysis by computer at last, storage, the size that shows tested value on computers, thereby for the variation of monitoring Suo Li in real time provides foundation, can change and fatigue conditions is carried out continuous long term monitoring self Suo Li, good stability makes things convenient for the bridge manager to grasp the drag-line working condition.In addition, adopt the fiber grating measuring technology to have digital sensing, precision height, be not subjected to characteristics such as electromagnetic interference, test mode is simple, and the system maintenance amount is little.And bridge portion or all drag-line networkings of can connecting constitute monitoring network, and the long term monitoring cost is lower.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cross-sectional view of Fig. 1.
The specific embodiment
Intelligent bridge cable comprises anchor head 1 and the cable body 2 that is connected with anchor head 1, be provided with casing outward after drag-line one end chill casting anchor head 1 inner chamber chill casting material solidifies with the cable body of anchor head connecting portion, on the cover wire of the steel tendon 4 of steel casing 3 sections, evenly arrange three or three above fiber Bragg grating strain sensors 5.The fiber grating strain device can directly be bonded in Steel Wire Surface, also can pass through other fixed form.Fiber Bragg grating strain sensor can external grating demodulation instrument 6 and computer 7, utilizes fiber grating strain and temperature test technology, and the Suo Li of drag-line is changed and fatigue conditions is monitored in real time.When the suffered stress of drag-line steel wire or temperature change, corresponding variation can take place in the narrow band light centre wavelength of optical grating reflection, be sent to wavelength demodulation device through photo-coupler, thereby reflect corresponding stress or variations in temperature that steel wire is suffered, do analysis, storage by computer at last, show the size of tested value by the form of design code on computers.
Claims (4)
1. intelligent bridge cable comprises anchor head and the cable body that is connected with anchor head, is provided with casing outward with the cable body of anchor head connecting portion, it is characterized in that the steel tendon cover wire in the casing is provided with fiber Bragg grating strain sensor.
2. intelligent bridge cable as claimed in claim 1 is characterized in that described fiber Bragg grating strain sensor is provided with more than three or three.
3. intelligent bridge cable as claimed in claim 2 is characterized in that, described fiber Bragg grating strain sensor is in the outer evenly layout of steel tendon.
4. as claim 1,2 or 3 described intelligent bridge cables, it is characterized in that described fiber grating strain device directly is bonded in Steel Wire Surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200899234U CN201010859Y (en) | 2007-04-06 | 2007-04-06 | Intelligent bridge inhaul cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200899234U CN201010859Y (en) | 2007-04-06 | 2007-04-06 | Intelligent bridge inhaul cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201010859Y true CN201010859Y (en) | 2008-01-23 |
Family
ID=39045803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200899234U Expired - Fee Related CN201010859Y (en) | 2007-04-06 | 2007-04-06 | Intelligent bridge inhaul cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201010859Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532973B (en) * | 2009-04-20 | 2010-11-10 | 重庆大学 | Optical fiber detecting and positioning method for self-detection of protection cover damage |
| CN102733211A (en) * | 2011-04-07 | 2012-10-17 | 祝向辉 | Prestressed wire cable capable of detecting self steel wire fracture and method for manufacturing same |
| CN101526409B (en) * | 2009-04-20 | 2012-12-05 | 重庆大学 | Super large cable force self-sensing intelligent cable and measuring method based on fiber strain sensing |
| CN107144387A (en) * | 2017-04-12 | 2017-09-08 | 浙锚科技股份有限公司 | A kind of intelligent suspension cable of parallel steel wire bridge |
| CN111733620A (en) * | 2020-07-10 | 2020-10-02 | 广东坚宜佳五金制品有限公司 | Stay cable |
| CN115993097A (en) * | 2023-03-23 | 2023-04-21 | 长安大学 | Monitoring and early warning method and system for cable-stayed bridge stay cable broken wire |
| CN117738386A (en) * | 2024-02-18 | 2024-03-22 | 北京市建筑工程研究院有限责任公司 | Fiber bragg grating intelligent steel strand and prestress structure member for building |
-
2007
- 2007-04-06 CN CNU2007200899234U patent/CN201010859Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532973B (en) * | 2009-04-20 | 2010-11-10 | 重庆大学 | Optical fiber detecting and positioning method for self-detection of protection cover damage |
| CN101526409B (en) * | 2009-04-20 | 2012-12-05 | 重庆大学 | Super large cable force self-sensing intelligent cable and measuring method based on fiber strain sensing |
| CN102733211A (en) * | 2011-04-07 | 2012-10-17 | 祝向辉 | Prestressed wire cable capable of detecting self steel wire fracture and method for manufacturing same |
| CN107144387A (en) * | 2017-04-12 | 2017-09-08 | 浙锚科技股份有限公司 | A kind of intelligent suspension cable of parallel steel wire bridge |
| CN107144387B (en) * | 2017-04-12 | 2019-08-06 | 浙锚科技股份有限公司 | A kind of parallel steel wire bridge intelligence suspension cable |
| CN111733620A (en) * | 2020-07-10 | 2020-10-02 | 广东坚宜佳五金制品有限公司 | Stay cable |
| CN111733620B (en) * | 2020-07-10 | 2022-03-01 | 广东坚宜佳五金制品有限公司 | Stay cable |
| CN115993097A (en) * | 2023-03-23 | 2023-04-21 | 长安大学 | Monitoring and early warning method and system for cable-stayed bridge stay cable broken wire |
| CN117738386A (en) * | 2024-02-18 | 2024-03-22 | 北京市建筑工程研究院有限责任公司 | Fiber bragg grating intelligent steel strand and prestress structure member for building |
| CN117738386B (en) * | 2024-02-18 | 2024-05-07 | 北京市建筑工程研究院有限责任公司 | Fiber bragg grating intelligent steel strand and prestress structure member for building |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20110406 |