CN201614547U - Connecting structure of built-in fiber grating strain transducer and internal steel wire of cable - Google Patents
Connecting structure of built-in fiber grating strain transducer and internal steel wire of cable Download PDFInfo
- Publication number
- CN201614547U CN201614547U CN2010201150319U CN201020115031U CN201614547U CN 201614547 U CN201614547 U CN 201614547U CN 2010201150319 U CN2010201150319 U CN 2010201150319U CN 201020115031 U CN201020115031 U CN 201020115031U CN 201614547 U CN201614547 U CN 201614547U
- Authority
- CN
- China
- Prior art keywords
- cable
- grating strain
- steel wire
- bragg grating
- fiber bragg
- 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 - Lifetime
Links
Images
Landscapes
- Optical Transform (AREA)
Abstract
The utility model relates to a connecting structure of a built-in fiber grating strain transducer and an internal steel wire of a cable, which comprises a fiber grating strain transducer (1) and an outer layer steel wire (2) of a connecting drum inside a cable. The fiber grating strain transducer (1) includes a support (1-4), the support (1-4) of the fiber grating strain transducer (1) is adhered with the outer layer steel wire (2) at the connecting drum inside the cable by using adhesive, and accordingly, the fiber grating strain transducer (1) is integrated with the outer layer steel wire (2) at the connecting drum inside the cable. The connecting structure is capable of effectively connecting the fiber grating strain transducer with the outer layer steel wire of the connecting drum of the cable, and enabling stress of the steel wire inside the cable to be correctly transferred to the transducer, thereby realizing the purpose of dynamometry of the built-in transducer of the cable.
Description
Technical field
The utility model relates to the connected mode of steel wire in a kind of cable built-in fiber bragg grating strain transducer and the rope.Be applicable to cable load-carrying members such as cable stayed bridge, suspension bridge, arch bridge.Belong to bridge construction part technical field.
Background technology
The funicular system of modern Longspan Bridge is the core component of cable stayed bridge and suspension bridge, dynamic load on the deadweight of long-span bridge girder construction and the bridge, the overwhelming majority is to be delivered on the king-post by funicular system, and the duty of cable is directly to reflect one of important symbol whether bridge is in a safe condition.But owing to reasons such as structure design, environmental corrosion, fatigue accumulations, damage and deterioration in various degree appears in cable in-service unavoidably.If fiber Bragg grating strain sensor organically can be integrated into cable inside, make and himself can measure parameters such as internal stress, temperature, make its cable rise to intelligent cable with automatic perception from a simple load, also realize taking into account the possibility of the whole stressed of cable and the stressed monitoring of local silk simultaneously, to more help structural safety and the operation state that people grasp cable self and full-bridge, the tendency of discovery accident in time, prevent that sudden accident from taking place.
Fiber grating is a kind of sensing element of function admirable, can respond to extraneous small strain by moving of bragg reflection wavelength and change, thereby realize parameters such as structural stress, temperature are realized on-line monitoring.It has the adverse circumstances of not being afraid of, be not subjected to ambient noise interference, anti-electromagnetic interference, collection sensing be transmitted in characteristics such as one, simple structure, easy to use, certainty of measurement height.
Application number is that application for a patent for invention that 200910145152.X, name are called " bridge intelligent cable system of built-in fiber grating sensor " discloses fiber grating is made fiber Bragg grating strain sensor with suitable encapsulating structure, and it is arranged in cable connecting cylinder position, but make the intelligent cable of inside dynamometry.The application for a patent for invention that application number is 200910145153.4, name is called " intelligent cable fiber grating strain sensor " discloses the encapsulating structure of special fiber Bragg grating strain sensor.Make cable built-in fiber bragg grating strain transducer can test the stressing conditions of steel wire in the rope exactly, need the steel wire that special fiber Bragg grating strain sensor and cable is interior effectively to be connected.Because the safe handling requirement of steel wire in the cable, surface can not be carried out any destructive, operation that might influence its intensity.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provide a kind of can be under the prerequisite of not destroying steel wire, the cover wire at connecting cylinder position in fiber Bragg grating strain sensor and the cable effectively is connected, makes the stressed syndeton that can be delivered to cable built-in strain transducer and the interior steel wire of rope on the sensor exactly of steel wire in the cable.
The purpose of this utility model is achieved in that the syndeton of steel wire in a kind of cable built-in fiber bragg grating strain transducer and the rope, the cover wire that comprises connecting cylinder position in fiber Bragg grating strain sensor and the cable, described fiber Bragg grating strain sensor comprises bearing, the bearing of described fiber Bragg grating strain sensor is mutually bonding with the cover wire at connecting cylinder position in glue and the cable, make fiber Bragg grating strain sensor become as a whole with the cover wire at the interior connecting cylinder position of cable.
The beneficial effects of the utility model are:
The utility model can be under the prerequisite of not destroying steel wire, the cover wire at connecting cylinder position in fiber Bragg grating strain sensor and the cable effectively is connected, make that steel wire is stressed in the cable can be delivered on the sensor exactly, thereby realize the purpose of cable built-in sensor dynamometry.
Description of drawings
The fiber Bragg grating strain sensor structural representation that Fig. 1 relates to for the utility model.
The seat structure schematic diagram of the fiber Bragg grating strain sensor that Fig. 2 relates to for the utility model.
The syndeton schematic diagram of steel wire in Fig. 3 the utility model cable built-in fiber bragg grating strain transducer and the rope.
Reference numeral among the figure:
Fiber Bragg grating strain sensor 1, the first fiber grating 1-1, the second steel pipe 1-2, the first steel pipe 1-3, bearing 1-4, thermal shrinkable sleeve 1-5, protection steel pipe 1-6;
The cover wire 2 at connecting cylinder position in the cable.
The specific embodiment
The fiber Bragg grating strain sensor structural representation as shown in Figure 1, as seen from Figure 1, described fiber Bragg grating strain sensor 1 comprises the first fiber grating 1-1, the second steel pipe 1-2, the first steel pipe 1-3, bearing 1-4, thermal shrinkable sleeve 1-5 and protection steel pipe 1-6.
Wherein bearing 1-4 structure as shown in Figure 2.As shown in Figure 3, two bearing 1-4 of fiber Bragg grating strain sensor are mutually bonding with the cover wire 2 at connecting cylinder position in glue and the cable, make fiber Bragg grating strain sensor 1 as a whole with 2 one-tenth of the cover wires at the interior connecting cylinder position of cable, make the output signal of fiber Bragg grating strain sensor 1 can effectively characterize the stressing conditions of the cover wire 2 at connecting cylinder position in the cable, thereby reach the purpose that cable built-in fiber bragg grating strain transducer is measured whole Suo Li.
Because fiber Bragg grating strain sensor is disposable implantation in the manufacture process of cable, technological requirement is higher, the steel wire long-term work is under big stress state in the rope, cable is in the operation process, because the effect of extraneous load, himself is constantly taking place to vibrate in certain stress amplitude scope, and steel wire bears fatigue load for a long time in the rope.Because the influence factor of above three aspects, to the main following points of the specific (special) requirements of glue:
1, temperature scope of application requirement;
2, aging, life requirements;
3, high shear strength;
4, high peel strength;
5, the elastic limit of glue will surpass the elastic strain that individual wire produces when the super stretching force of maximum, to guarantee that glue can recover when steel wire stretches repeatedly, because the maximum strain that cable produces when super stretch-draw surpasses the maximum strain of cable during construction, operation, can this strain be contrast standard;
6, the tired requirement of glue under fluctuating load.
Claims (1)
1. the syndeton of steel wire in cable built-in fiber bragg grating strain transducer and the rope, the cover wire (2) that comprises connecting cylinder position in fiber Bragg grating strain sensor (1) and the cable, described fiber Bragg grating strain sensor (1) comprises bearing (1-4), it is characterized in that: the bearing (1-4) of described fiber Bragg grating strain sensor (1) is mutually bonding with the cover wire (2) at the interior connecting cylinder position of cable with glue, make fiber Bragg grating strain sensor (1) become as a whole with the cover wire (2) at the interior connecting cylinder position of cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201150319U CN201614547U (en) | 2010-02-08 | 2010-02-08 | Connecting structure of built-in fiber grating strain transducer and internal steel wire of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201150319U CN201614547U (en) | 2010-02-08 | 2010-02-08 | Connecting structure of built-in fiber grating strain transducer and internal steel wire of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201614547U true CN201614547U (en) | 2010-10-27 |
Family
ID=43000918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201150319U Expired - Lifetime CN201614547U (en) | 2010-02-08 | 2010-02-08 | Connecting structure of built-in fiber grating strain transducer and internal steel wire of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201614547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246997A (en) * | 2017-08-14 | 2017-10-13 | 江苏法尔胜光电科技有限公司 | The testing device for shear strength and its shearing test method of the attached cementing structure of steel 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 |
-
2010
- 2010-02-08 CN CN2010201150319U patent/CN201614547U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246997A (en) * | 2017-08-14 | 2017-10-13 | 江苏法尔胜光电科技有限公司 | The testing device for shear strength and its shearing test method of the attached cementing structure of steel wire |
| CN107246997B (en) * | 2017-08-14 | 2024-01-30 | 江苏法尔胜光电科技有限公司 | Shear strength testing device and shear testing method for steel wire auxiliary adhesive joint structure |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101701450B (en) | Bridge intelligent cable system with built-in fiber grating sensor | |
| CN201567531U (en) | Smart cable device for bridges with optical fiber grating sensor inside | |
| RU2012115445A (en) | ELECTRICAL CABLE WITH BEND SENSOR AND MONITORING SYSTEM AND METHOD FOR DETECTING THE BEND IN A LEAST ONE ELECTRICAL CABLE | |
| CN105658970B (en) | Bearing facility for measuring the method for pretightning force and for executing this method | |
| CN101787676A (en) | Method for assembling cable built-in fiber bragg grating strain transducer | |
| CN201620355U (en) | Intelligent cable of built-in sensor | |
| CN201610523U (en) | Built-in fiber grating strain sensor of cable and mechanical connection structure of in-cable steel wire | |
| CN201614547U (en) | Connecting structure of built-in fiber grating strain transducer and internal steel wire of cable | |
| CN102680581A (en) | Matched-type fiber-grating acoustic emission sensing method with temperature compensation | |
| CN103089018A (en) | Prestress steel structure tension construction method capable of accurately setting up tension force | |
| CN201876387U (en) | Static load anchoring performance testing device | |
| CN201614548U (en) | Mounting structure of built-in fiber grating strain transducer of cable | |
| CN204228320U (en) | Rope tension proving installation | |
| CN209588971U (en) | The intelligent anchor bolt of multiaxis strain ga(u)ge and the built-in multiaxis strain ga(u)ge | |
| CN203704971U (en) | A sensor system used for engineering mechanical failure detection | |
| CN101694372A (en) | Intelligent cable fiber grating strain sensor | |
| CN101526409A (en) | Super large cable force self-sensing intelligent cable and measuring method based on fiber strain sensing | |
| CN202793660U (en) | Optical fiber sensor-based pulling force monitoring system for overhead power transmission line | |
| CN111174662B (en) | Displacement sensing device and application thereof | |
| CN202401396U (en) | Intelligent cable capable of sensing internal humidity for bridge | |
| WO2009126991A1 (en) | Method and system for monitoring strain in a structure using an optical fibre | |
| CN201569416U (en) | Intelligent type cable fiber grating strain transducer | |
| CN204241139U (en) | A kind of fiber grating Suo Li meter | |
| CN214277253U (en) | Mounting structure of fiber grating cable force sensor | |
| CN202216784U (en) | Fiber grating cable tension sensor with temperature self-compensation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |