CN203204213U - Strain sensing optical cable used for civil engineering structural health monitoring - Google Patents
Strain sensing optical cable used for civil engineering structural health monitoring Download PDFInfo
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- CN203204213U CN203204213U CN 201320228203 CN201320228203U CN203204213U CN 203204213 U CN203204213 U CN 203204213U CN 201320228203 CN201320228203 CN 201320228203 CN 201320228203 U CN201320228203 U CN 201320228203U CN 203204213 U CN203204213 U CN 203204213U
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- optical cable
- civil engineering
- health monitoring
- sensing optical
- structural health
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Abstract
The utility model relates to a strain sensing optical cable used for civil engineering structural health monitoring, aims to solve a technical problem for giving consideration to mechanical strength and sensing flexibility of an optical cable at the same time, and belongs to the technical field of optical sensing. The strain sensing optical cable used for civil engineering structural health monitoring is characterized in the strain sensing optical cable used for civil engineering structural health monitoring is provided with a sensing optical fiber, an ultraviolet light silica gel solidified protection layer, an inner sheath, a hot-sticking anti-sliding high-modular reinforcing piece and an outer sheath successively from inside out; and the adjacent parts are fitted with each other closely in a non-slipping manner. The strain sensing optical cable used for civil engineering structural health monitoring has beneficial effects that the mechanical strength of the strain sensing optical cable used for civil engineering structural health monitoring is improved substantially and tensile and compressive property are good since the hot-sticking anti-sliding high-modular reinforcing piece is introduced, so that the service lifetime of the strain sensing optical cable used for civil engineering structural health monitoring used in engineering is prolonged; the uniformity of optical fiber stress in the strain sensing optical cable used for civil engineering structural health monitoring is guaranteed by employing the ultraviolet light silica gel solidified protection layer; and transmission performance of forces is guaranteed effectively and the strain sensing optical cable used for civil engineering structural health monitoring can have good sensing flexibility by adopting the outer sheath made of highly-elastic material and by making the adjacent parts fitted with each other closely in a non-slipping manner.
Description
Technical field
The utility model belongs to the light field of sensing technologies, relates to a kind of straining sensing optical cable that is mainly used in civil engineering works structure health monitoring.
Background technology
Monitoring structural health conditions refers to utilize on-the-spot harmless sensing technology, by comprising the structural system specificity analysis of structural response, with the purpose that reaches the detection architecture damage or degenerate.In the monitoring structural health conditions process, such as come to nothing, the detection difficult point of defectives such as crack, fracture is that space-time randomness of development takes place for it, be that its happening part, space distribution and expansion trend, time course all have randomness, contingency, not intellectual and disguise, this makes the conventional sense of point type be difficult to prove effective.Distributed optical fiber sensing system because himself unique advantage, for large geotechnical building structure realize on a large scale, continuously, long term monitoring provides real feasibility.
Distributed optical fiber sensing system comprises sensing optic cable and signal handling equipment two parts.Wherein sensing optic cable again as the passage of transmitting optical signal, is the important component part of total system both as sensing element.The optical characteristics of sensing optic cable, mechanical property, performances such as sensing sensitivity directly have influence on feasibility and the monitoring level of structure health monitoring.The for example pile foundation of large scale civil engineering monitoring can reflect the time of day of measured object in order to ensure detected parameter, and the strain that must satisfy sensing optic cable and tested works is synchronous.Sensing optic cable often is laid on the main muscle of steel reinforcement cage, deposit concrete is embedded in sensor fibre in the bored concrete pile then, consistent with the pile body compatibility of deformation to guarantee sensing optic cable, if fibercuts in the sensing optic cable process of deployment follow-uply can't reappose implantation.This just requires sensing optic cable sufficiently high physical strength will be arranged on the one hand to guarantee survival rate, and good perceptual sensitivity also will be arranged on the other hand, the pile foundation distortion effectively can be delivered to the sensor fibre of innermost layer.
Sensing optic cable product in the market all is provided with internal layer sheath and outer protective sleeve usually outside sensor fibre, but often can't take into account physical strength and two performances of sensing sensitivity of optical cable simultaneously.The sensing sensitivity height, physical strength will variation, be not enough to keep out the STRESS VARIATION of concrete pile body, and enough strong oversheath sensing optic cable product can have influence on the perceptual sensitivity of sensing optic cable, therefore in the application of the monitoring structural health conditions of tackling this big strain of similar pile foundation, existing sensing optic cable product performance is all not fully up to expectations.
Summary of the invention
The purpose of this utility model is: overcome existing straining sensing optical cable application limit in big strain civil engineering works structure health monitorings such as pile foundation, provide a kind of physical strength height, self-protection ability by force and the good straining sensing optical cable of sensing characteristics.
For achieving the above object; the technical scheme that adopts is: a kind of straining sensing optical cable for civil engineering works structure health monitoring; comprise sensor fibre; the internal layer sheath; outer protective sleeve; it is characterized in that: described straining sensing optical cable is equipped with described sensor fibre, ultraviolet light silica gel curing protective coat, described internal layer sheath, hot sticky type antiskid from inside to outside successively and moves high mould reinforcement, described outer protective sleeve, and fit tightly no slippage between the adjacent each several part mutually.
Described ultraviolet light silica gel curing protective coat is that Bian makes of silica gel coating, UV-curing technology.
Described hot sticky type antiskid moves high mould reinforcement and adopts the KFRP material to make, and is bar-shaped, axially discrete be arranged at described sensor fibre around.
Described internal layer sheath adopts polyurethane material, and outer protective sleeve adopts the elastic material design, as tygon (PE) material, adopts full fashion of extrusion to make.
The beneficial effects of the utility model are: this sensing optic cable not only adopts the structure of ectonexine sheath, and introduce hot sticky type antiskid therein and move high mould reinforcement, improved the physical strength of optical cable greatly, have good tension compressive property, guaranteed the survival rate of optical cable in the engineering construction process.Ultraviolet light silica gel curing protective coat guarantees the stressed homogeneity of sensing optic cable inner fiber; hot sticky type antiskid moves high mould reinforcement, elastic material outer protective sleeve; and fit tightly no slippage between the adjacent each several part mutually; make sensing optic cable that deformation easily take place under external force; effectively guarantee the transmission performance of power, made optical cable have good perceptual sensitivity.
Description of drawings
The utility model is described in further detail below in conjunction with description of drawings and embodiment.
Fig. 1 is the utility model radial structure synoptic diagram.
Among the figure, 1-sensor fibre, 2-ultraviolet light silica gel curing protective coat, 3-internal layer sheath, 4-antiskid moves high mould reinforcement, 5-outer protective sleeve.
Embodiment
Fig. 1 has provided the utility model radial structure synoptic diagram; as seen from the figure; a kind of straining sensing optical cable that can be used for civil engineering works structure health monitoring; comprise sensor fibre 1; internal layer sheath 3, outer protective sleeve 5 is characterized in that: described straining sensing optical cable is equipped with described sensor fibre 1, ultraviolet light silica gel curing protective coat 2 from inside to outside successively; described internal layer sheath 3, hot sticky type antiskid move high mould reinforcement 4, described outer protective sleeve 5, and fit tightly no slippage between the adjacent each several part mutually.
Described ultraviolet light silica gel curing protective coat 2 is that Bian makes of silica gel coating, UV-curing technology, in order to the homogeneity of guaranteeing that the sensing optic cable inner fiber is stressed.
Described hot sticky type antiskid moves high mould reinforcement 4 and selects the KFRP material for use, axially discrete be arranged at described sensor fibre around.Under the hot conditions of optical cable production run, hot sticky type antiskid move high mould reinforcement 4 automatically close adhesion between interior oversheath, the resistance to tension of reinforcement is not fully exerted, effectively improve modulus value and the anti-pressure measurement performance of optical cable, simultaneously, improved the sensitive property of the strain sensing of optical cable.
Described internal layer sheath 3 adopts polyurethane material, outer protective sleeve 5 adopts the elastic material design, taking into full account under wear-resisting, oil resistant and the acidproof applied environment, also take into full account external force to effective transitivity of inner sensor fibre, can select different materials according to the difference of actual condition, generally select tygon (PE) material for use.Described internal layer sheath 3 and described outer protective sleeve 5 adopt full fashion of extrusion to make.
The utility model sensing optic cable adopts the structure of ectonexine sheath, introduces hot sticky type antiskid and moves high mould reinforcement, has good tension compressive property, has guaranteed the survival rate of optical cable in the engineering construction process; Oversheath adopts elastic material, makes sensing optic cable that deformation easily take place under external force, fits tightly no slippage between the each several part of optical cable simultaneously, has effectively guaranteed the transmission of power, makes optical cable have good perceptual sensitivity.
Claims (2)
1. straining sensing optical cable that is used for civil engineering works structure health monitoring; comprise sensor fibre; the internal layer sheath; outer protective sleeve; it is characterized in that: described straining sensing optical cable, be equipped with described sensor fibre, ultraviolet light silica gel curing protective coat from inside to outside successively, described internal layer sheath, hot sticky type antiskid move high mould reinforcement; described outer protective sleeve, and fit tightly no slippage between the adjacent each several part mutually.
2. according to the described straining sensing optical cable for civil engineering works structure health monitoring of claim 1, it is characterized in that: described hot sticky type antiskid moves high mould reinforcement, is bar-shaped, axially discrete be arranged at described sensor fibre around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320228203 CN203204213U (en) | 2013-04-29 | 2013-04-29 | Strain sensing optical cable used for civil engineering structural health monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320228203 CN203204213U (en) | 2013-04-29 | 2013-04-29 | Strain sensing optical cable used for civil engineering structural health monitoring |
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| CN203204213U true CN203204213U (en) | 2013-09-18 |
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| CN 201320228203 Expired - Fee Related CN203204213U (en) | 2013-04-29 | 2013-04-29 | Strain sensing optical cable used for civil engineering structural health monitoring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706110A (en) * | 2017-01-12 | 2017-05-24 | 中国科学院半导体研究所 | Radial sensitive optical fiber used for distributed optical fiber acoustic sensing |
| WO2017193570A1 (en) * | 2016-05-10 | 2017-11-16 | 河海大学 | Integrated monitoring system and monitoring method for seepage characteristics of water engineering project in complex environment |
| CN111487734A (en) * | 2020-04-27 | 2020-08-04 | 江苏亨通线缆科技有限公司 | Optical cable |
-
2013
- 2013-04-29 CN CN 201320228203 patent/CN203204213U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017193570A1 (en) * | 2016-05-10 | 2017-11-16 | 河海大学 | Integrated monitoring system and monitoring method for seepage characteristics of water engineering project in complex environment |
| US10739243B2 (en) | 2016-05-10 | 2020-08-11 | Hohai University | Integrated monitoring system and monitoring method for seepage behavior of water engineering in complex environment |
| CN106706110A (en) * | 2017-01-12 | 2017-05-24 | 中国科学院半导体研究所 | Radial sensitive optical fiber used for distributed optical fiber acoustic sensing |
| CN106706110B (en) * | 2017-01-12 | 2019-07-19 | 中国科学院半导体研究所 | A kind of radial sensitive optical fibre for distribution type fiber-optic sound sensing |
| CN111487734A (en) * | 2020-04-27 | 2020-08-04 | 江苏亨通线缆科技有限公司 | Optical cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20190429 |
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| CF01 | Termination of patent right due to non-payment of annual fee |