CN2615230Y - Fiber reinforced plastics-optical fiber grating composite intelligent ribs - Google Patents
Fiber reinforced plastics-optical fiber grating composite intelligent ribs Download PDFInfo
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- CN2615230Y CN2615230Y CN 03213143 CN03213143U CN2615230Y CN 2615230 Y CN2615230 Y CN 2615230Y CN 03213143 CN03213143 CN 03213143 CN 03213143 U CN03213143 U CN 03213143U CN 2615230 Y CN2615230 Y CN 2615230Y
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Abstract
The utility model provides a fiber-reinforced plastic-optical fiber grating intelligent composite bar (FRP-OFBG) comprising a fiber-reinforced plastic rib wherein optical fiber grating are arranged along in length. The utility model achieves lightweight, high-strength, fatigue resistance, corrosion resistance, high accuracy sense, electromagnetic interference resistance, pseudo distributed sense, absolute measurement, damp proofing, water proofing, high stability, long durability or the like. FRP-OFBG intelligent composite bar includes force and sense characteristic, integrates the characteristic of a construction material and a functional material into a perfect engineering materials. As a sense component, the FRP-OFBG intelligent composite bar overcomes the weakness of frailty and hard laying of fiber grating. The FRP-OFBG intelligent composite bar which is used conveniently can be cut into arbitrary length according to project practicality demand, which is applicable to industrialization produce. The FRP-OFBG intelligent composite bar can be widely applied for the foreground at the configuration monitoring field.
Description
(1) technical field
The utility model relates to a kind of intelligent civil engineering material.Specifically utilize the strength characteristics of fibre reinforced plastics (FRP) and the apperceive characteristic of Fiber Bragg Grating FBG (OFBG), the FRP-OFBG composite intelligent muscle of developing is to have stressed and sensing characteristics, structure set material and functional material concurrently in the civil engineering material of one.
(2) background technology
1978, the phenomenon that photon-induced refractive index changes in the Canadian Hill invention germnium doped fiber was come out the in-core grating.1989, the Meltz invention germnium doped fiber grating ultraviolet sidelights on of the U.S. were gone into technology, and people utilize this technology can make the fiber grating of various constants easily, make cost reduce greatly, for its extensive use is laid a good foundation.Because fiber grating has wavelength selectivity, with the fibre system compatibility, insert advantages such as loss is low, simple in structure, volume is little, with low cost, fiber grating all has a wide range of applications in communication and sensory field.The major advantage that fiber grating is used for sensing is embodied in: 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.But because bare optical fibers and bare optical gratings is very thin especially, external diameter is about about 125 microns, and its main component is SiO
2Therefore fragile especially, especially its shear resistance is very poor, directly it has been run into an installation technics difficult problem as sensing element in engineering reality, can not adapt to the concrete structure extensive style mode of production and abominable Service Environment at all, seriously restrict the application of fiber grating in civil engineering.
Fibre reinforced plastics are composite materials of forming with continuous fiber.This continuous fiber at first is immersed in the polymer that is used for binder fibre, is processed into needed shape then.According to the difference of kinds of fibers, fibre reinforced plastics can be divided into carbon fibre reinforced plastic, glass fiber reinforced plastics and aromatic polyamide fiber reinforced plastics and mix reinforced plastic etc.Fibre reinforced plastics have tensile strength height, in light weight, corrosion-resistant, nonmagnetic, endurance, easy good characteristic such as processing.Wherein, the fibre reinforced plastics bar can be made the shape of plain bars, is considered to a kind of possible substitution material of reinforcing bar.The tensile strength of carbon fibre precursor machine direction can reach tens times of plain bars, and the modulus of elasticity of high-elastic modules carbon fibre can reach 2～3 times of steel, and have higher antimagnetic and shielding property, once in war production, be used for latent row aircraft, antimagnetic and radiation proof engineering.But, the shortcoming that also there is the ductility difference in fibre reinforced plastics as a kind of novel constructional materials that development potentiality is arranged and technology, be not to replace traditional constructional materials-steel and concrete, but as an important supplement of traditional architecture, be suitable for the demanding important engineering structuress in aspect such as Service Environment, durability, antifatigue, as underground structure, ocean engineering, hydraulic engineering etc.Set up fibre reinforced plastics research association in developed countries such as the U.S., Japan, Canada at present, tentatively formulated the standard of structure design, and be successfully used to actual engineering.
(3) summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, easy to use, both can substitute or part substitutes reinforcing bar as primary structure member, also possess the fibre reinforced plastics-fiber grating composite intelligent muscle (FRP-OFBG) of intelligent sensing characteristic.The purpose of this utility model is achieved in that it comprises fiber reinforced plastic rod, is laid with fiber grating in fiber reinforced plastic rod along its length.The present invention can also comprise like this some architectural features: 1, the pitted skin made for sandblast of fiber reinforced plastic rod surface.2, resin is twined on the fiber reinforced plastic rod surface.3, the tail end at one section sensing muscle exposes one section optical fiber that is used to connect the compensated optical fiber grating.4, fiber grating is positioned at the center of fiber reinforced plastic rod.5, has certain-length optical fiber string at interval between the fiber grating.The fiber grating of the utility model product is arranged in the fiber reinforced plastic rod, is to shape in the process by fibre reinforced plastics fiber grating is entered drawing mould together with fiber bundle, organically constitutes one through Technology for Heating Processing.Because fiber grating and fibre reinforced plastics are fixed good, guaranteed the cooperative transformation of fiber grating and fibre reinforced plastics, thereby the strain of fiber grating induction is exactly the distortion of fibre reinforced plastics.The needs of Temperature Influence and accurate distribution measuring are provided with one section optical fiber that exposes at tail end, so that welding temperature compensated optical fiber grating or cascaded fiber grating sensing element when considering the monitoring of civil engineering structure long-term health.The compensated optical fiber grating places another capillary metal tube, guarantees the influence that it is not subjected to external force.This lombined sensor has the advantage of fibre reinforced plastics and fiber grating concurrently, as high-strength light, antifatigue, corrosion-resistant, advantages such as sensing accuracy is high (can reach 1～2 μ ε), anti-electromagnetic interference, quasi-distributed sensing, absolute measurement, moisture resistance waterproof, stability and good endurance.Simultaneously, this lombined sensor has remedied fibre reinforced plastics and fiber grating some shortcomings separately, as fiber grating overcome fiber reinforced plastic rod from the perception nonlinear problem; And fibre reinforced plastics are a kind of good packaging protections of fiber grating, have overcome bare optical fibers and bare optical gratings and have been difficult to adapt to the requirement that the reinforced concrete structure extensive style is constructed, and have improved the durability of fiber grating greatly.Like this, fibre reinforced plastics-optical fibre grating sensing muscle just forms the outstanding sensing characteristics of the good mechanical characteristic of fibre reinforced plastics, antirust durable and anti-emi characteristics and fiber grating and organically combines, and has greatly satisfied the needs of civil engineering structure to mechanical property and structure intelligent health monitoring.In addition, FRP-OFBG composite intelligent muscle can cut into random length according to actual demands of engineering, and is very easy to use, is particularly suitable for industrialization production.
(4) description of drawings
Fig. 1 and 2 is the structural representation of the utility model embodiment.
(5) specific embodiments
For example the utility model is done more detailed description below in conjunction with accompanying drawing:
In conjunction with Fig. 1, the structure of FRP-OFBG composite intelligent muscle is formed and is comprised fiber reinforced plastic rod 1, is laid with fiber grating 2 in fiber reinforced plastic rod along its length.Product of the present utility model can adopt such method to make: with fiber grating and the fibrous material that steeped epoxy resin, as carbon fiber, glass fiber, aramid fiber etc., send into drawing mould together, organically constitute one through heating, curing, three heat treatment processes of cooling, when coming out of the stove, marked the particular location of fiber grating simultaneously.Consider the packaging protection of fiber grating, fiber grating is sent into as fasciculus intermedius, and the back fiber grating that is shaped just in time is in the middle of fibre reinforced plastics.For better with concrete conglutination, blasting treatment is carried out on the fiber reinforced plastic rod surface, makes the surface of fiber reinforced plastic rod form pitted skin, or twine resin outside fiber reinforced plastic rod.In order to give full play to the quasi-distributed sensing ability of fiber grating, the fiber grating of sending into has been fused in advance has certain-length grating string at interval.Engineering is used or is tested when needing, and the fibre reinforced plastics-optical fibre grating sensing muscle that shapes is cut into required length arbitrarily, and utilize the anisotropic characteristics of fiber in the end optical fiber ablation to be come out, and is welded on the optical patchcord to get final product.
In conjunction with Fig. 2, consider the temperature-compensating or the distributed sensing problem of structure long-term health monitoring, the tail end of each section sensing muscle exposes one section optical fiber 3, can connect compensated optical fiber grating or other fiber-optic grating sensors.
Claims (10)
1, a kind of fibre reinforced plastics-optical fibre grating composite intelligent muscle, it is characterized in that: it comprises fiber reinforced plastic rod, is laid with fiber grating in fiber reinforced plastic rod along its length.
2, fibre reinforced plastics-optical fibre grating composite intelligent muscle according to claim 1 is characterized in that: the pitted skin that make for sandblast on the fiber reinforced plastic rod surface.
3, fibre reinforced plastics-optical fibre grating composite intelligent muscle according to claim 1 is characterized in that: resin is twined on the fiber reinforced plastic rod surface.
4, according to claim 1,2 or 3 described fibre reinforced plastics-optical fibre grating lombined sensors, it is characterized in that: the tail end at one section sensing muscle exposes one section optical fiber that is used to connect the compensated optical fiber grating.
5, according to claim 1,2 or 3 described fibre reinforced plastics-optical fibre grating lombined sensors, it is characterized in that: fiber grating is positioned at the center of fiber reinforced plastic rod.
6, fibre reinforced plastics-optical fibre grating lombined sensor according to claim 4 is characterized in that: fiber grating is positioned at the center of fiber reinforced plastic rod.
7, according to claim 1,2 or 3 described fibre reinforced plastics-optical fibre grating lombined sensors, it is characterized in that: fiber grating is the grating string with certain-length interval of welding.
8, fibre reinforced plastics-optical fibre grating lombined sensor according to claim 4 is characterized in that: fiber grating is the grating string with certain-length interval of welding.
9, fibre reinforced plastics-optical fibre grating lombined sensor according to claim 5 is characterized in that: fiber grating is the grating string with certain-length interval of welding.
10, fibre reinforced plastics-optical fibre grating lombined sensor according to claim 6 is characterized in that: fiber grating is the grating string with certain-length interval of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213143 CN2615230Y (en) | 2003-05-15 | 2003-05-15 | Fiber reinforced plastics-optical fiber grating composite intelligent ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213143 CN2615230Y (en) | 2003-05-15 | 2003-05-15 | Fiber reinforced plastics-optical fiber grating composite intelligent ribs |
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| Publication Number | Publication Date |
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| CN2615230Y true CN2615230Y (en) | 2004-05-12 |
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| CN 03213143 Expired - Fee Related CN2615230Y (en) | 2003-05-15 | 2003-05-15 | Fiber reinforced plastics-optical fiber grating composite intelligent ribs |
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Cited By (5)
| 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 |
| CN101929220A (en) * | 2010-06-29 | 2010-12-29 | 金文成 | Intelligent composite spiral reinforcement stirrup and manufacturing method and building composite anchoring head thereof |
| CN104446148A (en) * | 2014-12-18 | 2015-03-25 | 无锡伊诺永利文化创意有限公司 | Formula for preparing environment-friendly board |
| CN107956292A (en) * | 2016-10-14 | 2018-04-24 | 柳州欧维姆结构检测技术有限公司 | A kind of mixed type intelligence carbon fiber board |
| CN111811685A (en) * | 2020-07-22 | 2020-10-23 | 广州大学 | Fiber grating temperature sensor, assembly and manufacturing method |
-
2003
- 2003-05-15 CN CN 03213143 patent/CN2615230Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN101929220A (en) * | 2010-06-29 | 2010-12-29 | 金文成 | Intelligent composite spiral reinforcement stirrup and manufacturing method and building composite anchoring head thereof |
| CN104446148A (en) * | 2014-12-18 | 2015-03-25 | 无锡伊诺永利文化创意有限公司 | Formula for preparing environment-friendly board |
| CN107956292A (en) * | 2016-10-14 | 2018-04-24 | 柳州欧维姆结构检测技术有限公司 | A kind of mixed type intelligence carbon fiber board |
| CN111811685A (en) * | 2020-07-22 | 2020-10-23 | 广州大学 | Fiber grating temperature sensor, assembly and manufacturing method |
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