CN203501973U - Bituminous pavement cross strain sensor - Google Patents
Bituminous pavement cross strain sensor Download PDFInfo
- Publication number
- CN203501973U CN203501973U CN201320663578.6U CN201320663578U CN203501973U CN 203501973 U CN203501973 U CN 203501973U CN 201320663578 U CN201320663578 U CN 201320663578U CN 203501973 U CN203501973 U CN 203501973U
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- strain
- cruciform
- bituminous pavement
- pole
- strain transducer
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Abstract
The utility model relates to a bituminous pavement cross strain sensor comprising a cross nylon rod formed by four pole segments; the cross strain sensor is specialized in that each pole segment of the cross nylon rod is provided with a strain sensor connected with a signal line; an end portion of each pole segment is fixed with an aluminium rod provided with a groove matched with the signal line. A strain sheet of the strain sensor employs a 350 ohm Wheatstone bridge. The cross strain sensor can collect strain measurement in two mutually vertical directions of the bituminous pavement, thereby determining vertical tension strain of the bituminous pavement and transverse tension strain of the pavement. The bituminous pavement cross strain sensor is less affected by temperature change, anti-interference, and convenient in compensation, and has very good adaptability to the special environment of the bituminous pavement.
Description
Technical field
The utility model relates to a kind of bituminous pavement cruciform strain transducer, in particular, relates in particular to a kind of cruciform strain transducer that can simultaneously measure the vertical and horizontal strain of bituminous pavement.
Background technology
For the coping behavior of bituminous pavement under research weather and Vehicle Load, and road pavement analytical model and fatigue equation verify, often needs to observe the strain-responsive of brea bed under dynamic loads effect.Resistance strain sensor has can survey strain good linearity, and resolution is high, can meet strain (stress) centralized detecting.Resistance strain gage has wide range of applications, can be operated under various special environment conditions, as at 1 000 ℃ of high temperature, low temperature-269 ℃, high pressure, under water, high-intensity magnetic field and nuclear radiation etc. very all can carry out stress (strain) test under rugged environment condition.
But conventional resistance strain often can only be measured strain-responsive longitudinally.In addition, be embedded in the influence factor that the strain transducer in pavement structure is subject to more, the situation that easy generation signal wire of long duration is pressed down, need lay sensor again, quantities is large, strainometer bury underground with acquisition process process in need to follow certain method.
Summary of the invention
The utility model, in order to overcome the shortcoming of above-mentioned technical matters, provides a kind of bituminous pavement cruciform strain transducer.
Bituminous pavement cruciform strain transducer of the present utility model, comprises the cruciform fiber-glass pole being comprised of four sections of poles, and its special feature is: on each pole of described cruciform fiber-glass pole, be provided with strain transducer, strain transducer is connected with signal wire; The end of each pole is all fixed with aluminium bar, offers the groove matching with signal wire on aluminium bar.
On each pole of cruciform fiber-glass pole, strain transducer is all set, can measures the strain on the mutually perpendicular both direction of bituminous pavement, can realize longitudinal stretching strain of bituminous pavement and the measurement of transverse strain simultaneously.By signal wire being placed among the groove on aluminium bar, effectively realized the protective effect to signal wire.
Bituminous pavement cruciform strain transducer of the present utility model, the foil gauge of described strain transducer is the Wheatstone bridge of 350 ohm.Wheatstone bridge has lot of advantages, as suppressed the impact of temperature variation, suppresses to disturb, and compensation is convenient etc.
Bituminous pavement cruciform strain transducer of the present utility model, is provided with the band that signal wire is fixed on described cruciform fiber-glass pole and aluminium bar.
Bituminous pavement cruciform strain transducer of the present utility model, the pole of described cruciform fiber-glass pole is connected with aluminium bar by screw thread, offers the threaded hole matching with cruciform fiber-glass pole on aluminium bar, on the pole of cruciform fiber-glass pole, is provided with hold-down nut.
Bituminous pavement cruciform strain transducer of the present utility model, the surface of described strain transducer is coated with the protective film that one deck is heat insulation, moistureproof.Protective film can adopt to be received speed and carrys out protective film, and it is imported from America material, and principal ingredient is acid propyl base fluid and nanometer b-oxide, by protective film is set, can make key position avoid invasion overheated, that cross tide and installation process and use procedure foreign matter.
The beneficial effects of the utility model are: the utility model cruciform strain transducer, by equal fixing strain transducer on each pole of cruciform fiber-glass pole, realized the strain measurement that gathers two mutually perpendicular directions of bituminous pavement, longitudinal stretching strain of bituminous pavement can be determined, the transverse strain on road surface can be determined simultaneously.By signal wire being placed among the groove of aluminium bar, effectively realized the protective effect to signal wire.By the surface at strain transducer, apply protective film, both played heat insulation, the moisture-proof role of strain transducer, can avoid again foreign matter in installation and use procedure to invade.
The utlity model has following advantage:
1) impact of temperature variation is little, anti-interference, and compensation is convenient.
2) the utility model cruciform strain transducer has good adaptability to the particular surroundings of bituminous pavement;
3) by the voltage signal of output, be multiplied by corresponding transformation ratio, can obtain along the axial tension and compression strain of fiber-glass pole, better the strain data in collection vehicle driving process;
4) by the voltage signal of output, be multiplied by the transformation ratio of response, can obtain the transverse strain at the bottom of brea bed, horizontal two strain transducers can be averaged, and result is more accurate;
5) measure highly sensitively, monitor strain range is large, and precision can reach 1%--2%;
6) in measurement, be output as electric signal, adopt electronic device easily to realize the advantages such as measuring process robotization and remote transmission.
Accompanying drawing explanation
Fig. 1 is the structural representation of bituminous pavement cruciform strain transducer of the present utility model;
Fig. 2 is the structural representation in A-A cross section in Fig. 1;
Fig. 3 is the structural representation in B-B cross section in Fig. 1.
In figure: 1 cruciform fiber-glass pole, 2 aluminium bars, 3 strain transducers, 4 grooves, 5 signal wires, 6 bands, 7 hold-down nuts, 8 threaded holes.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, provided the structural representation of bituminous pavement cruciform strain transducer of the present utility model, it comprises 2,4 strain transducers of 1,4 aluminium bars of cruciform fiber-glass pole, signal wire 5, band 6; Shown cruciform fiber-glass pole 1 is comprised of 4 poles, is all fixed with strain transducer 3 on each pole, and strain transducer 3 is by signal wire 5 output signals.The end of each pole of cruciform fiber-glass pole 1 is all fixed with aluminium bar 2, offers groove 4 on aluminium bar 2, and like this, signal wire 5 just can be embedded in groove 4 and draw, and can avoid signal wire 5 to occur in the process that use and vehicle roll for a long time damaged.On each pole due to cruciform fiber-glass pole 1, be provided with strain transducer 3, can realize longitudinal stretching strain of bituminous pavement and the measurement of transverse strain simultaneously.
In order to realize the Measurement accuracy to bituminous pavement deformation quantity, strain transducer 3 adopts the Wheatstone bridge resistance strain plate of 350 ohm, and Wheatstone bridge has lot of advantages, as suppressed the impact of temperature variation, suppresses to disturb, and compensation is convenient etc.By the voltage signal of the utility model output is gathered, and according to effector calibration data, obtain conversion coefficient, i.e. the relation of unit strain and unit voltage, finally obtains strain data.
By band 6, signal wire 5 can be firmly fixed on cruciform fiber-glass pole 1 and aluminium bar 2.As shown in Figures 2 and 3, provided respectively the structural representation of A-A and B-B cross section in Fig. 1, on shown aluminium bar 2, be not only provided with groove 4, also be provided with the threaded hole 8 matching with cruciform fiber-glass pole 1, to realize being threaded of cruciform fiber-glass pole 1 and aluminium bar 2, the end of each pole of cruciform fiber-glass pole 1 is provided with hold-down nut 7.
The construction method of bituminous pavement cruciform strain transducer of the present utility model:
1) after base layer construction, the thickness of basic unit, flatness, packing, road camber etc. are checked, if there is ups and downs, loose, hole groove etc., must rebuild, after trimming, basic unit's cleaning is clean, and the burial place of cruciform strain transducer is determined in setting-out;
2) strain transducer cisco unity malfunction with multimeter, checks that whether strain transducer 3 is working properly, if need be changed in time;
3) cruciform strain transducer is fixed on to predetermined burial place, and sprays asphalt of penetrate layer in relevant position;
4) according to definite coefficient of loose laying asphalt that paves;
5) bituminous mixture laying smooth after, should roll while hot, after rolling, then check that with multimeter whether sensor working properly.
3, points for attention
1) while burying strain transducer underground, should note drawing of sensor lead, be convenient to data acquisition;
2), during bituminous mixture laying, note controlling the temperature that paves and can not, lower than regulation and stipulation value, note controlling compactness simultaneously;
3) while rolling, note not adopting vibrating roller, in order to avoid affect strain transducer, normally work.
Claims (5)
1. a bituminous pavement cruciform strain transducer, comprise the cruciform fiber-glass pole (1) being formed by four sections of poles, it is characterized in that: on each pole of described cruciform fiber-glass pole, be provided with strain transducer (3), strain transducer is connected with signal wire (5); The end of each pole is all fixed with aluminium bar (2), offers the groove (4) matching with signal wire on aluminium bar.
2. bituminous pavement cruciform strain transducer according to claim 1, is characterized in that: the foil gauge of described strain transducer (3) is the Wheatstone bridge of 350 ohm.
3. bituminous pavement cruciform strain transducer according to claim 1 and 2, is characterized in that: on described cruciform fiber-glass pole (1) and aluminium bar (2), be provided with the band (6) that signal wire (5) is fixed.
4. bituminous pavement cruciform strain transducer according to claim 1 and 2, it is characterized in that: the pole of described cruciform fiber-glass pole (1) is connected with aluminium bar (2) by screw thread, on aluminium bar, offer the threaded hole (8) matching with cruciform fiber-glass pole, on the pole of cruciform fiber-glass pole, be provided with hold-down nut (7).
5. bituminous pavement cruciform strain transducer according to claim 1 and 2, is characterized in that: the surface of described strain transducer (3) is coated with the protective film that one deck is heat insulation, moistureproof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663578.6U CN203501973U (en) | 2013-10-25 | 2013-10-25 | Bituminous pavement cross strain sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663578.6U CN203501973U (en) | 2013-10-25 | 2013-10-25 | Bituminous pavement cross strain sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203501973U true CN203501973U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663578.6U Expired - Fee Related CN203501973U (en) | 2013-10-25 | 2013-10-25 | Bituminous pavement cross strain sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203501973U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075653A (en) * | 2014-04-10 | 2014-10-01 | 中北大学 | Strain capacity testing system based on orthogonal strain gauge array |
| CN107727535A (en) * | 2017-11-21 | 2018-02-23 | 山东交通学院 | A kind of edger for dynamic shear rheometer |
| CN108592848A (en) * | 2018-03-14 | 2018-09-28 | 山东海超机械有限公司 | A kind of woodworking equipment plank angle detection device and its detection method |
| CN110160448A (en) * | 2019-06-12 | 2019-08-23 | 安徽久壬电气科技有限公司 | A kind of transmission line of electricity analog conducting wire icing on-line monitoring system |
| CN113124747A (en) * | 2021-04-21 | 2021-07-16 | 齐鲁工业大学 | Three-dimensional sensor for online safety monitoring of asphalt pavement and preparation method thereof |
-
2013
- 2013-10-25 CN CN201320663578.6U patent/CN203501973U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075653A (en) * | 2014-04-10 | 2014-10-01 | 中北大学 | Strain capacity testing system based on orthogonal strain gauge array |
| CN107727535A (en) * | 2017-11-21 | 2018-02-23 | 山东交通学院 | A kind of edger for dynamic shear rheometer |
| CN107727535B (en) * | 2017-11-21 | 2023-10-27 | 山东交通学院 | Trimming device for dynamic shear rheometer |
| CN108592848A (en) * | 2018-03-14 | 2018-09-28 | 山东海超机械有限公司 | A kind of woodworking equipment plank angle detection device and its detection method |
| CN108592848B (en) * | 2018-03-14 | 2024-01-26 | 山东海超机械有限公司 | Plank angle detection device for woodworking equipment and detection method thereof |
| CN110160448A (en) * | 2019-06-12 | 2019-08-23 | 安徽久壬电气科技有限公司 | A kind of transmission line of electricity analog conducting wire icing on-line monitoring system |
| CN113124747A (en) * | 2021-04-21 | 2021-07-16 | 齐鲁工业大学 | Three-dimensional sensor for online safety monitoring of asphalt pavement and preparation method thereof |
| CN113124747B (en) * | 2021-04-21 | 2023-01-17 | 齐鲁工业大学 | Three-dimensional sensor for online safety monitoring of asphalt pavement and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141025 |
|
| EXPY | Termination of patent right or utility model |