CN203083520U - Embedded resistance strain gauge - Google Patents
Embedded resistance strain gauge Download PDFInfo
- Publication number
- CN203083520U CN203083520U CN 201220741817 CN201220741817U CN203083520U CN 203083520 U CN203083520 U CN 203083520U CN 201220741817 CN201220741817 CN 201220741817 CN 201220741817 U CN201220741817 U CN 201220741817U CN 203083520 U CN203083520 U CN 203083520U
- Authority
- CN
- China
- Prior art keywords
- resistance strain
- embedded
- strain gauge
- strainometer
- clad
- 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
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- 229920002379 silicone rubber Polymers 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 235000013312 flour Nutrition 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011247 coating layer Substances 0.000 abstract 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 16
- 239000004567 concrete Substances 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses an embedded resistance strain gauge, which comprises a coating layer and a resistance strain gauge, wherein the coating layer and the resistance strain gauge are made by mixing silicon rubber and silicon sand powder, the resistance strain gauge is embedded in the coating layer, the resistance strain gauge is connected with leading-out wires, and the three leading-out wires of the resistance strain gauge are led out from the same end of the coating layer along the length direction; the resistance strain gauge connected with the lead-out wire and embedded in the coating layer is embedded in the manufacturing process of the coating layer. The utility model discloses have better tracking nature of meeting an emergency, the effect that reflects small deformation in real time promptly is better.
Description
Technical field
The utility model relates to a kind of embedded resistor strainometer.
Background technology
Along with development and application high-strength, technology of high performance concrete, the phenomenon that damage promptly takes place before ftractureing length of time morning of xoncrete structure or member, being on active service is very general.In order to overcome this defective, improve the early stage cracking resistance of concrete material, must at first accurately hold its distortion (strain) that early takes place the length of time.Yet owing to be in rerum natura fast development, the surface quality instability of the cement-based material at setting and harden initial stage, the little deformation measurement instrument that causes using always (as contact displacement meter, adhere to strainometer, adhesive type foil gauge) is difficult to be suitable for.Its main cause is: the lower and surface moisture of cement-based material test specimen intensity during this, above-mentioned listed strain measuring instrument are difficult to installation in position and accurately control; Strain measuring instrument is pressed the measurement result influence bigger to the contact that test specimen produced.In recent years the noncontact of Ti Chuing decline deformeter device (as laser displacement gauge, vortex flow displacement meter) though possessing certain advantage aspect the defective that overcomes above-mentioned contact instrument, exist be provided with loaded down with trivial details, use inconvenient, strict to measurement environment, be subject to weak points such as electricity, magnetic interference and use cost height.And above-mentioned little deformation measurement instrument all is arranged at external body to be measured, and its temperature history is different from body to be measured (referring to cement-based material herein) temperature inside resume, and therefore the deformation measurement result who is obtained need be revised.
Summary of the invention
Loaded down with trivial details for being provided with of overcoming that existing little deformation measurement instrument exists, use inconvenient, strict to measurement environment, be subject to electricity, magnetic interference and use cost height and be arranged at its measurement result of external body to be measured shortcoming such as to revise, the utility model provides a kind of embedded resistor strainometer.
The technical solution adopted in the utility model is:
The embedded resistor strainometer, it is characterized in that: comprise the clad and the resistance strain gage that are mixed and made into by silicon rubber and silica flour, described resistance strain gage is embedded in the described clad, described resistance strain gage is connected with draws lead, draws lead and draws from the same end of clad along its length for three of described resistance strain gage.
Further, the described resistance strain gage of drawing lead that is connected with that is embedded in the clad is buried underground in clad manufacturing process.
Further, the length dimension of described clad is 80～100mm, and width dimensions is 12mm, and gauge is 3mm.
Further, the length dimension of described resistance strain gage is 70～100mm, and width dimensions is 10mm.
The method for making of embedded resistor strainometer described in the utility model: be not more than under the prerequisite of 20MPa at the elastic modulus that guarantees the embedded resistor strainometer, silicon rubber is evenly mixed by a certain percentage with silica flour, and dividing the identical preprepared inner cavity size of two-layer injection up and down of thickness is in the aluminium alloy mould device of (80～110) mm * 12mm * 3mm; Lower floor pours and will be connected with the resistance strain gage of drawing lead after dried slightly and pave in its surface, pours into a mould the upper strata then.Treat dried slightly back, upper strata in the suitably pressurization of its surface, so that make clad and resistance strain gage bond intact.At last the mould device after the moulding is statically placed in temperature and is 35 ℃, relative humidity and be the about 10h of maintenance in 50% the environment, make after the clad full solidification.The measurement gauge length of embedded resistor strainometer described in the utility model is that 60～90mm, resolution are 1 * 10
-6(μ ε); Elastic modulus is about 10MPa.
Also thermopair can be implanted its inside as the additional device of embedded resistor strainometer in the utility model, be used for monitoring simultaneously concrete internal temperature.
When the utility model uses, be about to the embedded resistor strainometer when concrete sample is built and imbed its inside center position, and draw the connection lead, be connected, thereby monitor the self-constriction of concrete sample in real time with data collecting instrument.
The beneficial effects of the utility model are embodied in: the volume change distortion in the length of time early of can measuring cement-based material effectively, can realize that especially the strain after the cement-based material initial set accurately measures; The temperature history and the measured body of embedded resistor strainometer are identical, thereby have avoided influencing measurement result because of the temperature history difference; And the utility model material therefor is easy to get, and manufacture craft is simple, and is easy to use, the measuring accuracy height; Changed existing measuring technique be provided with loaded down with trivial details, disturbing factor is many, the defective and the deficiency of operating difficulties etc.
Description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram.
Fig. 2 is the utility model working state schematic representation.
Fig. 3 adopts the utility model and adopts concrete volume change measurement result in the length of time morning contrast synoptic diagram that displacement transducer obtained.
The concrete volume change measurement result in length of time morning that a curve obtains for adopting the utility model embedded resistor strainometer;
The concrete volume change measurement result in length of time morning that the b curve obtains for adopting displacement transducer.
Embodiment
See figures.1.and.2, the embedded resistor strainometer, comprise the clad 1 and the resistance strain gage 2 that are mixed and made into by silicon rubber and silica flour, described resistance strain gage 2 is embedded in the described clad 1, described resistance strain gage 2 is connected with draws lead 3, draws lead 3 and draws from the same end of clad 1 along its length for three of described resistance strain gage 2.
Further, the described resistance strain gage 2 of drawing lead 3 that is connected with that is embedded in the clad 1 is buried underground in clad 1 manufacturing process.
Further, the length dimension of described clad 1 is 80～100mm, and width dimensions is 12mm, and gauge is 3mm.
Further, the length dimension of described resistance strain gage 2 is 70～100mm, and width dimensions is 10mm.
The method for making of embedded resistor strainometer described in the utility model: be not more than under the prerequisite of 20MPa at the elastic modulus that guarantees the embedded resistor strainometer, silicon rubber is evenly mixed by a certain percentage with silica flour, and dividing the identical preprepared inner cavity size of two-layer injection up and down of thickness is in the aluminium alloy mould device of (80～110) mm * 12mm * 3mm; Lower floor pours and will be connected with the resistance strain gage 2 of drawing lead after dried slightly and pave in its surface, pours into a mould the upper strata then.Treat dried slightly back, upper strata in the suitably pressurization of its surface, so that make clad and resistance strain gage bond intact.At last the mould device after the moulding is statically placed in temperature and is 35 ℃, relative humidity and be the about 10h of maintenance in 50% the environment, make after the clad full solidification.The measurement gauge length of embedded resistor strainometer described in the utility model is that 60～90mm, resolution are 1 * 10
-6(μ ε); Elastic modulus is about 10MPa.
Also thermopair can be implanted its inside as the additional device of embedded resistor strainometer in the utility model, be used for monitoring simultaneously concrete internal temperature.
When the utility model uses, be about to the embedded resistor strainometer when concrete sample 6 is built and imbed its inside center position, and draw and connect lead 3, be connected, thereby monitor the self-constriction of concrete sample in real time with data collecting instrument 5.
With reference to Fig. 3,, adopt the self-constriction of 4 pairs of same test specimens of high accuracy displacement sensor to implement externally measured simultaneously in order to highlight the deformation measurement effect and the advantage of embedded resistor strainometer.Fig. 3 adopts embedded resistor strainometer and 4 pairs of same concrete samples of displacement transducer to implement the test findings that self-constriction is measured respectively.This control test is found, the basic correspondent equal of 1 day the former two's strain data; The strain value gathered of embedded resistor strainometer is slightly larger than the data that corresponding high accuracy displacement sensor 4 is constantly obtained, maximum difference about 15 * 10 afterwards
-6(μ ε) is less than 10% of corresponding measured value.Because the existence that high accuracy displacement sensor 4 contact is pressed, make it be difficult to be applicable to deformation measurement between final set after initial set early stage.In addition, the data and curves that high accuracy displacement sensor 4 is gathered comprises a lot of " platform " (being the strain no change of being gathered in certain period), this has reflected that embedded resistor strainometer degree of precision displacement transducer 4 has better strain tracing property, reflects in real time that promptly the effect of microdeformation is better.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (4)
1. embedded resistor strainometer, it is characterized in that: comprise the clad and the resistance strain gage that are mixed and made into by silicon rubber and silica flour, described resistance strain gage is embedded in the described clad, described resistance strain gage is connected with draws lead, draws lead and draws from the same end of clad along its length for three of described resistance strain gage.
2. embedded resistor strainometer as claimed in claim 1 is characterized in that: the described resistance strain gage of drawing lead that is connected with that is embedded in the clad is buried underground in clad manufacturing process.
3. embedded resistor strainometer as claimed in claim 1 or 2 is characterized in that: the length dimension of described clad is 80～100mm, and width dimensions is 12mm, and gauge is 3mm.
4. embedded resistor strainometer as claimed in claim 3 is characterized in that: the length dimension of described resistance strain gage is 70～100mm, and width dimensions is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741817 CN203083520U (en) | 2012-12-28 | 2012-12-28 | Embedded resistance strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741817 CN203083520U (en) | 2012-12-28 | 2012-12-28 | Embedded resistance strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203083520U true CN203083520U (en) | 2013-07-24 |
Family
ID=48829347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741817 Expired - Lifetime CN203083520U (en) | 2012-12-28 | 2012-12-28 | Embedded resistance strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203083520U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154855A (en) * | 2014-07-31 | 2014-11-19 | 桂林理工大学 | Concrete structure strain measurement method |
| CN104748664A (en) * | 2015-03-13 | 2015-07-01 | 南华大学 | Rock-soil mass interior displacement measuring system |
| CN104848779A (en) * | 2015-04-01 | 2015-08-19 | 浙江工业大学 | Embedded type deformation gauge with ultralow elastic modulus and method for assembling the embedded type deformation gauge with ultralow elastic modulus |
| CN105841860A (en) * | 2016-04-29 | 2016-08-10 | 重庆大学 | Quantum dot crustal stress testing device, and preparation method and using method thereof |
| CN108133620A (en) * | 2017-12-23 | 2018-06-08 | 苏州云葫芦信息科技有限公司 | A kind of crossing traffic prewarning and law enforcement device |
| CN109709313A (en) * | 2019-02-11 | 2019-05-03 | 河海大学 | A kind of new concrete restrained shrinkage experimental rig and application method |
-
2012
- 2012-12-28 CN CN 201220741817 patent/CN203083520U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154855A (en) * | 2014-07-31 | 2014-11-19 | 桂林理工大学 | Concrete structure strain measurement method |
| CN104748664A (en) * | 2015-03-13 | 2015-07-01 | 南华大学 | Rock-soil mass interior displacement measuring system |
| CN104748664B (en) * | 2015-03-13 | 2017-10-24 | 南华大学 | A kind of Rock And Soil internal displacement system for measuring quantity |
| CN104848779A (en) * | 2015-04-01 | 2015-08-19 | 浙江工业大学 | Embedded type deformation gauge with ultralow elastic modulus and method for assembling the embedded type deformation gauge with ultralow elastic modulus |
| CN105841860A (en) * | 2016-04-29 | 2016-08-10 | 重庆大学 | Quantum dot crustal stress testing device, and preparation method and using method thereof |
| CN108133620A (en) * | 2017-12-23 | 2018-06-08 | 苏州云葫芦信息科技有限公司 | A kind of crossing traffic prewarning and law enforcement device |
| CN109709313A (en) * | 2019-02-11 | 2019-05-03 | 河海大学 | A kind of new concrete restrained shrinkage experimental rig and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |
|
| CX01 | Expiry of patent term |