CN204115763U - A kind of temperature, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously - Google Patents
A kind of temperature, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously Download PDFInfo
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- CN204115763U CN204115763U CN201420410164.7U CN201420410164U CN204115763U CN 204115763 U CN204115763 U CN 204115763U CN 201420410164 U CN201420410164 U CN 201420410164U CN 204115763 U CN204115763 U CN 204115763U
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Abstract
The utility model provides a kind of temperature, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, it utilizes the multi-section circular arc shape sheet metal identical with tested bar diameter to be interconnected to constitute the agent structure of sensor, arc-shaped flanged pin metal connecting sheet and arc-shaped metal connecting sheet form cavity, cavity and the band groove arc shape metal connecting sheet two ends parallel with cavity are connected with an arc-shaped sheet metal respectively, establish the band groove arc shape metal intermediate of one end retractable in cavity.First bare optical fibers and bare optical gratings is fixed in band groove arc shape metal connecting sheet groove and forms fiber Bragg grating strain sensor, and the second bare optical fibers and bare optical gratings is fixed in band groove arc shape metal intermediate groove and forms fiber-optical grating temperature sensor.Utilize the strain measurement value of the measured temperature of fiber-optical grating temperature sensor to fiber Bragg grating strain sensor to compensate, measure while reaching reinforcing bar strain and temperature.This strainometer precision is high, volume is little, has future in engineering applications widely.
Description
Technical field
The utility model relates to the strain of a kind of reinforcing bar and temperature measuring equipment, especially to the sensor that the reinforcing bar strain in civil engineering work reinforced concrete structure and measuring point place temperature are measured simultaneously.
Background technology
Reinforcing bar strain is one of major parameter of reflection reinforced concrete structure stress, no matter is model experiment, or engineering structure performance monitoring, and reinforcing bar strain is all the important content of reinforced concrete structure test.Tradition reinforcing steel strain gauge is all based on resistance-strain sensing principle or vibratory string sensing principle, exist test signal be easily subject to electromagnetic interference (EMI), long term monitoring result reliability poor, distributed measurement can not be realized, wire complexity, type vibration wire reinforcing steel strain gauge can not carry out the disadvantages such as dynamic test.When tradition reinforcing steel strain gauge is installed, tested reinforcing bar is needed to block, then the reinforcing steel strain gauge making reinforcing bar shape is welded in tested reinforcing bar disconnect position, projection due to welding position makes the force-transmitting state of reinforcing bar and concrete joint surface change, thus cause the change of tested reinforcing steel bar bear state in reinforced concrete structure, there is limited precision, complexity be installed, to shortcomings such as tested structure influence are large.Therefore, existing reinforced concrete structure reinforcing steel strain gauge can not meet the demand of high precision and long term monitoring, in the urgent need to a kind of reinforcing steel strain gauge of superior performance.
In order to develop the more excellent reinforcing steel strain gauge of performance, the sensor based on theory of the fiber optical is selected to be one of effective way.Optical fiber grating sensing utilizes one section of in-core body grating with periodic refractive index as sensing element, measurand change is obtained by the change of measuring the working wavelength of optical fiber grating that external physical quantity causes, optical fiber grating sensing is using the wavelength of light as measuring object, not by the impact of light intensity, signal stabilization.Optical fiber grating sensing is a kind of novel sensing principle, having that measuring accuracy is high, fast response time, good reliability, electromagnetism interference, long-time stability are good, can adapt to hot and humid environment, volume is little, can realize the advantages such as quasi-distributed measurement, is a kind of sensor carrier of superior performance.Through development for many years, the manufacturing technology of fiber grating is very ripe, and cost of manufacture also reduces greatly, will have broad application prospects.Reinforcing steel strain gauge based on theory of the fiber optical can carry out short-term measurement, also can carry out long term monitoring, can meet the different requirements of dissimilar reinforced concrete structure reinforcing bar strain testing, adapts to the demand that China's civil engineering construction is flourish.
Summary of the invention
technical matters:the purpose of this utility model is to provide a kind of temperature, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, and it can carry out real―time precision measurment to the temperature at the strain of reinforced concrete and measuring point place; Meanwhile, can reach in measuring process measurement while reinforcing bar strain and measuring point place temperature.
technical scheme:the utility model solves the technical scheme that its technical matters adopts: a kind of temperature, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, comprise the first arc-shaped sheet metal, band groove arc shape metal connecting sheet, arc-shaped flanged pin metal connecting sheet, band groove arc shape metal intermediate, arc-shaped metal connecting sheet, the second arc-shaped sheet metal, first bare optical fibers and bare optical gratings, second bare optical fibers and bare optical gratings, the first tail optical fiber, the second tail optical fiber and the 3rd tail optical fiber, wherein the first arc-shaped sheet metal establishes the first groove, the second arc-shaped sheet metal is established the second groove and the 3rd groove, band groove arc shape metal connecting sheet and arc-shaped flanged pin metal connecting sheet interval are arranged and are fixedly connected with the first arc-shaped sheet metal and the second arc-shaped sheet metal at two ends respectively, groove with groove arc shape metal connecting sheet aligns with the first groove and the second groove, and the inside and outside arc-shaped surface of band groove arc shape metal connecting sheet is concordant with the inside and outside arc-shaped surface of the second arc-shaped sheet metal with the first arc-shaped sheet metal, arc-shaped flanged pin metal connecting sheet external arc surface is concordant with the external arc surface of the second arc-shaped sheet metal with the first arc-shaped sheet metal, arc-shaped metal connecting sheet two ends are fixedly connected between the first arc-shaped sheet metal and the second arc-shaped sheet metal, arc-shaped metal connecting sheet external arc surface is fixedly connected with the flange of arc-shaped flanged pin metal connecting sheet, and arc-shaped metal connecting sheet Inner arc surface is concordant with the Inner arc surface of the second arc-shaped sheet metal with the first arc-shaped sheet metal, groove with groove arc shape metal intermediate aligns with the 3rd groove, band groove arc shape metal intermediate left end is fixedly connected on the second arc-shaped sheet metal, between band groove arc shape metal intermediate right-hand member and the first arc-shaped sheet metal, there is interval, be with the surrounded surface of groove arc shape metal intermediate and all there is interval between arc-shaped flanged pin metal connecting sheet and arc-shaped metal connecting sheet.
Described first bare optical fibers and bare optical gratings one end forms the second tail optical fiber through band groove arc shape metal connecting sheet groove right-hand member, and the first bare optical fibers and bare optical gratings other end forms the first tail optical fiber through band groove arc shape metal connecting sheet groove left end; First bare optical fibers and bare optical gratings is fixed in band groove arc shape metal connecting sheet groove by first ring epoxy resins, and the first epoxy resin surface is concordant with band groove arc shape metal connecting sheet Inner arc surface; Second tail optical fiber is fixed in the first groove by first ring epoxy resins, and the first epoxy resin surface is concordant with the first arc-shaped sheet metal Inner arc surface; First tail optical fiber is fixed in the second groove by first ring epoxy resins, and the first epoxy resin surface is concordant with the second arc-shaped sheet metal Inner arc surface; Second bare optical fibers and bare optical gratings one end forms the 3rd tail optical fiber through band groove arc shape metal intermediate groove left end, and the second bare optical fibers and bare optical gratings other end blocks at band groove arc shape metal intermediate groove right-hand member place; Second bare optical fibers and bare optical gratings is fixed in band groove arc shape metal intermediate groove by the second epoxy resin, and the second epoxy resin surface is concordant with band groove arc shape metal intermediate Inner arc surface; 3rd tail optical fiber is fixed in the 3rd groove by the 3rd epoxy resin, and the 3rd epoxy resin surface is concordant with the second arc-shaped sheet metal inside surface; 3rd tail optical fiber passes the 3rd groove and is welded to connect with the first tail optical fiber.
A kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, and described first arc-shaped sheet metal thickness is identical with the second arc-shaped sheet metal thickness and band groove arc shape metal connecting sheet thickness.
A kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, described arc-shaped flanged pin metal connecting sheet non-flange place thickness is identical with band groove arc shape metal intermediate thickness and arc-shaped metal connecting sheet thickness, and is all less than 1/3rd of the first arc-shaped sheet metal thickness.
A kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, and described first arc-shaped sheet metal is identical with the second arc-shaped sheet metal length.
A kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, described first arc-shaped sheet metal, the second arc-shaped sheet metal are all identical with the radius-of-curvature of band groove arc shape metal connecting sheet, and can change according to the size of tested bar diameter.
A kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, and described arc-shaped flanged pin metal connecting sheet inside surface, band groove arc shape metal intermediate outside surface, band groove arc shape metal intermediate inside surface and arc-shaped metal connecting sheet outside surface arrange heat conduction lubricant.
A kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, and the material of described first arc-shaped sheet metal, band groove arc shape metal connecting sheet, arc-shaped flanged pin metal connecting sheet, band groove arc shape metal intermediate, arc-shaped metal connecting sheet and the second arc-shaped sheet metal is stainless steel.
beneficial effect:a kind of temperature of the present utility model, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously, utilize the fiber-optical grating temperature sensor measuring tempeature of not strained impact in strainometer and the measured value of the fiber Bragg grating strain sensor in strainometer is compensated, the temperature of measuring point can also be obtained while Measurement accuracy strain, measurement function while there is strain and temperature, do not need extra temperature measuring equipment, have that measuring accuracy is high, long-time stability good, anti-electromagnetic interference capability is strong, sensor integration degree advantages of higher.Another beneficial effect of the present utility model carries out Measurement accuracy as mounting bracket to the temperature variations in measuring point place concrete setting process by reinforcing bar, a sensor several functions.Only the terminal point at reinforcing steel strain gauge two ends of the present utility model need be welded in tested rebar surface or be cemented in tested rebar surface during measurement, therefore, Embedded installation convenience little to structure influence; Terminal is away from the epoxy resin in sensor, and welding also can not affect the cohesive strength of epoxy resin.Bare optical fibers and bare optical gratings is directly pasted in circular arc-shaped metal thin slice inboard groove by the utility model, can not only available protecting bare optical fibers and bare optical gratings not damaged in structure of reinforced concrete process, and structure is simple, easy to make.This temperature, strain simultaneously measuring optical fiber grating reinforcing steel strain gauge provide many facilities inherently to vast engineering test personnel, therefore have future in engineering applications widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the semisectional view of Fig. 1;
Fig. 3 is the front view of Fig. 1;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the left view of Fig. 3;
Fig. 6 is the A-A cut-open view of Fig. 3;
Fig. 7 is the B-B cut-open view of Fig. 3;
Fig. 8 is the C-C cut-open view of Fig. 3;
Fig. 9 is the schematic three dimensional views of the first arc-shaped sheet metal 1 in Fig. 1;
Figure 10 is the schematic three dimensional views of the second arc-shaped sheet metal 6 in Fig. 1.
In figure: the first arc-shaped sheet metal 1; Band groove arc shape metal connecting sheet 2; Arc-shaped flanged pin metal connecting sheet 3; Band groove arc shape metal intermediate 4; Arc-shaped metal connecting sheet 5; Second arc-shaped sheet metal 6; First bare optical fibers and bare optical gratings 7; Second bare optical fibers and bare optical gratings 8; First tail optical fiber 9; Second tail optical fiber 10; 3rd tail optical fiber 11; First ring epoxy resins 12; Second epoxy resin 13; 3rd epoxy resin 14; First groove 15; Second groove 16; 3rd groove 17.
Embodiment
Embodiment: be described in detail below in conjunction with accompanying drawing 1 ~ 10 pair of the technical solution of the utility model:
A kind of temperature of the present embodiment, strain simultaneously measuring optical fiber grating reinforcing steel strain gauge comprises the first arc-shaped sheet metal 1, band groove arc shape metal connecting sheet 2, arc-shaped flanged pin metal connecting sheet 3, band groove arc shape metal intermediate 4, arc-shaped metal connecting sheet 5, second arc-shaped sheet metal 6, first bare optical fibers and bare optical gratings 7, second bare optical fibers and bare optical gratings 8, first tail optical fiber 9, second tail optical fiber 10, 3rd tail optical fiber 11, first ring epoxy resins 12, second epoxy resin 13, 3rd epoxy resin 14, first groove 15, second groove 16 and the 3rd groove 17, wherein, on first arc-shaped sheet metal, 1 establishes the first groove 15, second arc-shaped sheet metal 6 is established the second groove 16 and the 3rd groove 17.
The grating section of the second bare optical fibers and bare optical gratings 8 is removed overlay and dips in the tail optical fiber cutting off right-hand member after alcohol is cleaned with rayon balls, and the second bare optical fibers and bare optical gratings 8 is placed in alcohol clean band groove arc shape metal intermediate 4 groove in, second bare optical fibers and bare optical gratings 8 right side does not exceed band groove arc shape metal intermediate 4 right-hand member, second bare optical fibers and bare optical gratings 8 left end exceeds band groove arc shape metal intermediate 4 left end and forms the 3rd tail optical fiber 11, the second epoxy resin 13 is inserted in band groove arc shape metal intermediate 4 groove, make the second epoxy resin 13 surface concordant with band groove arc shape metal intermediate 4 surface, heating makes the second epoxy resin 13 solidify, band groove arc shape metal intermediate 4 left end and the second arc-shaped sheet metal 6 right-hand member are fixed, and band groove arc shape metal intermediate 4 groove is alignd with the second groove 16, space is left between band groove arc shape metal intermediate 4 right-hand member and the first arc-shaped sheet metal 1 left end, make band groove arc shape metal intermediate 4 can free-extension, 3rd tail optical fiber 11 passes from the second groove 16, the 3rd epoxy resin 14 is inserted in the second groove 16,3rd epoxy resin 14 surface is concordant with the second arc-shaped sheet metal 6, and heating makes the 3rd epoxy resin 14 solidify.
Band groove arc shape metal connecting sheet 2 left end and the second arc-shaped sheet metal 6 are fixed, and band groove arc shape metal connecting sheet 2 groove is alignd with the 3rd groove 17, band groove arc shape metal connecting sheet 2 inner arc surface is concordant with the second arc-shaped sheet metal 6 inner arc surface.
Band groove arc shape metal connecting sheet 2 right-hand member and the first arc-shaped sheet metal 1 are fixed, and band groove arc shape metal connecting sheet 2 groove is alignd with the first groove 15, band groove arc shape metal connecting sheet 2 inner surface is concordant with inside the first arc-shaped sheet metal 1, by the first bare optical fibers and bare optical gratings 7 successively through the 3rd groove 17, band groove arc shape metal connecting sheet 2 groove and the first groove 15 form the first tail optical fiber 9 at right-hand member, the left end of the first bare optical fibers and bare optical gratings 7 forms the second tail optical fiber 10, apply certain pulling force make the first bare optical fibers and bare optical gratings 7 have certain pre-stretching strain at the first bare optical fibers and bare optical gratings 7 two ends and keep and band groove arc shape metal connecting sheet 2 indention parallel, at the 3rd groove 17, first ring epoxy resins 12 is inserted in band groove arc shape metal connecting sheet 2 groove and the first groove 15, make epoxy resin 12 surface and the first arc-shaped sheet metal 1 inner arc surface, band groove arc shape metal connecting sheet 2 inner arc surface is concordant with the second arc-shaped sheet metal 6 inner arc surface, arc-shaped flanged pin metal connecting sheet 3 right-hand member and the first arc-shaped sheet metal 1 are fixed, arc-shaped flanged pin metal connecting sheet 3 left end and the second arc-shaped sheet metal 6 are fixed, and arc-shaped flanged pin metal connecting sheet 3 outer arc surface is concordant with the first arc-shaped sheet metal 1 outer arc surface and the second arc-shaped sheet metal 6 outer arc surface, arc-shaped metal connecting sheet 5 right-hand member and the first arc-shaped sheet metal 1 are fixed, arc-shaped metal connecting sheet 5 left end and the second arc-shaped sheet metal 6 are fixed, and arc-shaped metal connecting sheet 5 inner arc surface is concordant with the first arc-shaped sheet metal 1 inner arc surface and the second arc-shaped sheet metal 6 inner arc surface, first tail optical fiber 9 and the 3rd tail optical fiber 11 are welded to connect.
First arc-shaped sheet metal 1 and the second arc-shaped sheet metal 6 are as temperature, the end construction straining measuring optical fiber grating reinforcing steel strain gauge simultaneously, can to fix with tested reinforcement welding easily or cementing fixing, to make temperature, strain measuring optical fiber grating reinforcing steel strain gauge and tested reinforcing bar deform in same pace simultaneously.With groove arc shape metal connecting sheet 2 and arc-shaped flanged pin metal connecting sheet 3 external structure as temperature, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, it mainly plays protection inner structure and the strain of engineering structure and temperature is passed to inner structure.Arc-shaped flanged pin metal connecting sheet 3 and arc-shaped metal connecting sheet 5 form a cavity, boundary belt groove arc shape metal intermediate 4 not by external interference and can in cavity free-extension.During measurement, epoxy resin can be inserted in the space between reinforcing steel strain gauge and reinforcing bar, affect measurement result to avoid concrete mortar to pour into the space between reinforcing steel strain gauge and reinforcing bar, accomplish that measurement result is accurately reliable.
Band groove arc shape metal intermediate 4 one end retractable, strain can not be produced due to tested reinforcing bar strain variation, thus the second bare optical fibers and bare optical gratings 8 also can not produce operation wavelength drift due to the strain variation of tested reinforcing bar, temperature variation then can cause the drift of the second bare optical fibers and bare optical gratings 8 operation wavelength because of the good heat conductivility of fiber grating reinforcing steel strain gauge material, therefore can only be recorded the temperature variation of tested reinforcement location by the second bare optical fibers and bare optical gratings 8.Band groove arc shape metal connecting sheet 2 due to two ends be individually fixed in the first arc-shaped sheet metal 1 and the second arc-shaped sheet metal 6 and with tested reinforcing bar deform in same pace, the temperature variation of tested reinforcing bar strain variation and tested reinforcement location all can cause the drift of the first bare optical fibers and bare optical gratings 7 operation wavelength.Utilize the wave length shift of the measured temperature of the second bare optical fibers and bare optical gratings 8 to the first bare optical fibers and bare optical gratings 7 to compensate, obtain the strain of tested reinforcing bar, measure while reaching reinforcing bar strain and measuring point place temperature.
Claims (7)
1. a temperature, strain is measuring optical fiber grating reinforcing steel strain gauge simultaneously, it is characterized in that: comprise the first arc-shaped sheet metal (1), band groove arc shape metal connecting sheet (2), arc-shaped flanged pin metal connecting sheet (3), band groove arc shape metal intermediate (4), arc-shaped metal connecting sheet (5), second arc-shaped sheet metal (6), first bare optical fibers and bare optical gratings (7), second bare optical fibers and bare optical gratings (8), first tail optical fiber (9), second tail optical fiber (10) and the 3rd tail optical fiber (11), wherein the first arc-shaped sheet metal (1) establishes the first groove (15), second arc-shaped sheet metal (6) is established the second groove (16) and the 3rd groove (17), band groove arc shape metal connecting sheet (2) and arc-shaped flanged pin metal connecting sheet (3) interval are arranged and are fixedly connected with the first arc-shaped sheet metal (1) and the second arc-shaped sheet metal (6) at two ends respectively, the groove of band groove arc shape metal connecting sheet (2) aligns with the first groove (15) and the second groove (16), and the inside and outside arc-shaped surface of band groove arc shape metal connecting sheet (2) is concordant with the inside and outside arc-shaped surface of the second arc-shaped sheet metal (6) with the first arc-shaped sheet metal (1), arc-shaped flanged pin metal connecting sheet (3) external arc surface is concordant with the external arc surface of the second arc-shaped sheet metal (6) with the first arc-shaped sheet metal (1), arc-shaped metal connecting sheet (5) two ends are fixedly connected between the first arc-shaped sheet metal (1) and the second arc-shaped sheet metal (6), arc-shaped metal connecting sheet (5) external arc surface is fixedly connected with the flange of arc-shaped flanged pin metal connecting sheet (3), and arc-shaped metal connecting sheet (5) Inner arc surface is concordant with the Inner arc surface of the second arc-shaped sheet metal (6) with the first arc-shaped sheet metal (1), the groove of band groove arc shape metal intermediate (4) aligns with the 3rd groove (17), band groove arc shape metal intermediate (4) left end is fixedly connected on the second arc-shaped sheet metal (6), between band groove arc shape metal intermediate (4) right-hand member and the first arc-shaped sheet metal (1), there is interval, be with the surrounded surface of groove arc shape metal intermediate (4) and all there is interval between arc-shaped flanged pin metal connecting sheet (3) and arc-shaped metal connecting sheet (5),
Described first bare optical fibers and bare optical gratings (7) one end forms the second tail optical fiber (10) through band groove arc shape metal connecting sheet (2) groove right-hand member, and the first bare optical fibers and bare optical gratings (7) other end forms the first tail optical fiber (9) through band groove arc shape metal connecting sheet (2) groove left end; First bare optical fibers and bare optical gratings (7) is fixed in band groove arc shape metal connecting sheet (2) groove by first ring epoxy resins (12), and first ring epoxy resins (12) surface is concordant with band groove arc shape metal connecting sheet (2) Inner arc surface; Second tail optical fiber (10) is fixed in the first groove (15) by first ring epoxy resins (12), and first ring epoxy resins (12) surface is concordant with the first arc-shaped sheet metal (1) Inner arc surface; First tail optical fiber (9) is fixed in the second groove (16) by first ring epoxy resins (12), and first ring epoxy resins (12) surface is concordant with the second arc-shaped sheet metal (6) Inner arc surface; Second bare optical fibers and bare optical gratings (8) one end forms the 3rd tail optical fiber (11) through band groove arc shape metal intermediate (4) groove left end, and the second bare optical fibers and bare optical gratings (8) other end blocks at band groove arc shape metal intermediate (4) groove right-hand member place; Second bare optical fibers and bare optical gratings (8) is fixed in band groove arc shape metal intermediate (4) groove by the second epoxy resin (13), and the second epoxy resin (13) surface is concordant with band groove arc shape metal intermediate (4) Inner arc surface; 3rd tail optical fiber (11) is fixed in the 3rd groove (17) by the 3rd epoxy resin (14), and the 3rd epoxy resin (14) surface is concordant with the second arc-shaped sheet metal (6) inside surface; 3rd tail optical fiber (11) passes the 3rd groove (17) and is welded to connect with the first tail optical fiber (9).
2. a kind of temperature according to claim 1, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, is characterized in that: described first arc-shaped sheet metal (1), the second arc-shaped sheet metal (6) are identical with the thickness of band groove arc shape metal connecting sheet (2).
3. a kind of temperature according to claim 1, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, it is characterized in that: described arc-shaped flanged pin metal connecting sheet (3) non-flange place thickness is identical with band groove arc shape metal intermediate (4) thickness and arc-shaped metal connecting sheet (5) thickness, and is all less than 1/3rd of the first arc-shaped sheet metal (1) thickness.
4. a kind of temperature according to claim 1, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, is characterized in that: described first arc-shaped sheet metal (1) is identical with the length of the second arc-shaped sheet metal (6).
5. a kind of temperature according to claim 1, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, is characterized in that: described first arc-shaped sheet metal (1), the second arc-shaped sheet metal (6) are all identical with the radius-of-curvature of band groove arc shape metal connecting sheet (2).
6. a kind of temperature according to claim 1, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, is characterized in that: described arc-shaped flanged pin metal connecting sheet (3) inside surface, band groove arc shape metal intermediate (4) outside surface, band groove arc shape metal intermediate (4) inside surface and arc-shaped metal connecting sheet (5) outside surface are provided with heat conduction lubricant.
7. a kind of temperature according to claim 1, strain measuring optical fiber grating reinforcing steel strain gauge simultaneously, is characterized in that: described first arc-shaped sheet metal (1), band groove arc shape metal connecting sheet (2), arc-shaped flanged pin metal connecting sheet (3), band groove arc shape metal intermediate (4), arc-shaped metal connecting sheet (5) and the second arc-shaped sheet metal (6) are stainless steel sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410164.7U CN204115763U (en) | 2014-07-24 | 2014-07-24 | A kind of temperature, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420410164.7U CN204115763U (en) | 2014-07-24 | 2014-07-24 | A kind of temperature, strain be measuring optical fiber grating reinforcing steel strain gauge simultaneously |
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| CN204115763U true CN204115763U (en) | 2015-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101307B (en) * | 2014-07-24 | 2016-08-17 | 河海大学 | A kind of measurement reinforcing bar temperature, fiber grating strain meter of strain simultaneously |
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2014
- 2014-07-24 CN CN201420410164.7U patent/CN204115763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101307B (en) * | 2014-07-24 | 2016-08-17 | 河海大学 | A kind of measurement reinforcing bar temperature, fiber grating strain meter of strain simultaneously |
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Granted publication date: 20150121 Termination date: 20170724 |