CN206248025U - Built-in sensors - Google Patents
Built-in sensors Download PDFInfo
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- CN206248025U CN206248025U CN201621291871.4U CN201621291871U CN206248025U CN 206248025 U CN206248025 U CN 206248025U CN 201621291871 U CN201621291871 U CN 201621291871U CN 206248025 U CN206248025 U CN 206248025U
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- memorial alloy
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- concrete structure
- silk
- wire
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Abstract
The utility model discloses a kind of built-in sensors, including：A pair of fixtures, are fixed in the concrete structure；Memorial alloy senses silk, is arranged between fixture described in a pair and in tensioning state, and its two ends is connected with fixture described in a pair respectively, in the concrete structure；Couple of conductor, wire described in a pair is connected with memorial alloy sensing silk, and wire described in a pair is located at the two ends that the memorial alloy senses silk respectively, the Part I of the wire is located in the concrete structure, Part II stretches out the concrete structure, and the Part II of the wire is used to be connected with monitor.Built-in sensors simple structure of the present utility model, monitoring method step is few, easy to operate, and the effective monitoring to the internal strain of concrete structure can be realized in longer cycle.
Description
Technical field
The utility model is related to the health monitoring field of concrete structure, espespecially a kind of built-in sensors.
Background technology
With the fast development in city, the exploitation of the underground space are more and more extensive, substantial amounts of underground engineering meet the tendency of and
It is raw.The substantial increase of deep big foundation pit, requirement very high is proposed to construction safety, and foundation pit deformation monitoring is used as guarantee deep pit monitor
Measure also seem ever more important.One of traditional pit retaining monitoring mode is that the position of stress Relatively centralized is attached to using foil gauge
Put, the dependent variable reflected by foil gauge judges the stress or displacement situation of structure, so as to formulate counter-measure.Traditional constantan
Foil gauge is typically only capable of outer patch on concrete structure, measures the surface strain of concrete structure, but, concrete structure it is interior
Portion's strain is more notable to the health effect of concrete structure.
Therefore, a kind of new built-in sensors of the applicant.
Utility model content
The purpose of this utility model is to provide a kind of built-in sensors, and built-in sensors simple structure can be in week more long
Internal strain in phase to concrete structure is effectively monitored.
In order to solve the above technical problems, the utility model provides a kind of built-in sensors, for measuring concrete structure
Internal strain, including：A pair of fixtures, are fixed in the concrete structure；Memorial alloy senses silk, is arranged on a pair of institutes
State between fixture and in tensioning state, its two ends is connected with fixture described in a pair respectively, positioned at the concrete structure
In；Couple of conductor, wire described in a pair is connected with memorial alloy sensing silk, and wire described in a pair is respectively positioned at described
Memorial alloy senses the two ends of silk, and the Part I of the wire is located in the concrete structure, and Part II stretches out described
Concrete structure, the Part II of the wire is used to be connected with monitor.
Preferably, the memorial alloy sensing silk is Ti-Ni memorial alloys；And/or；The wire is copper wires.
Preferably, the diameter of the memorial alloy sensing silk is less than 1mm；And/or；The spacing of fixture described in a pair is
100~200mm.
Preferably, the two ends of the memorial alloy sensing silk are fastened on fixture described in a pair respectively, and described
Memorial alloy is sensed to be fixed between silk and the fixture by glue.
Preferably, the wire is welded on memorial alloy sensing silk, and is fixed by glue therebetween.
Built-in sensors of the present utility model can realize following any one beneficial effect.
1st, built-in sensors simple structure of the present utility model, when concrete structure is deformed upon, concrete structure meeting
A pair of fixtures that drive is disposed therein, further make the memorial alloy being arranged between fixture sense silk and deform upon,
The resistance of memorial alloy sensing silk can be changed with deformation, and the change in resistance of memorial alloy sensing silk is transferred to prison by wire
Device is surveyed, so as to detect the internal strain changing value of concrete structure, and then the internal injury situation of concrete structure is judged.
2nd, memorial alloy sensing silk uses Ti-Ni memorial alloys in built-in sensors structure of the present utility model, compared to
Traditional constantan foil gauge, the measurement sensitivity of Ti-Ni memorial alloys is higher and acidproof, alkaline-resisting, it is adaptable to corrosive atmosphere,
In addition, Ti-Ni memorial alloys have good recoverable force performance, can carry out that measurement is repeated several times.
3rd, memorial alloy sensing silk is wrapped on fixture and enters one by glue in built-in sensors of the present utility model
Step is fixed, and wire is welded on memorial alloy sensing silk and is further fixed by glue, and so setting can ensure outer burying
The stabilized structure of sensor, so as to ensure the accuracy of its monitoring effect.
4th, the method and step of monitoring concrete structure internal strain of the present utility model is simple, and easily operation can be accurate
The strained situation of concrete structure is monitored, and memorial alloy sensing silk need to only be heated after once monitoring terminates and can be carried out
Monitoring next time, such that it is able to realize the long period monitoring to the internal strain of concrete structure.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is a kind of structural representation of specific embodiment of built-in sensors of the present utility model；
Fig. 2 is built-in sensors shown in Fig. 1 structural representation in the mounted state.
Drawing reference numeral explanation：
Fixture 10；Memorial alloy senses silk 20；Wire 30；Concrete structure 40；
Cage bar A, stirrup B, junction C, pad D.
Specific embodiment
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Embodiment one
With reference to shown in Fig. 1 and Fig. 2, this specific embodiment discloses a kind of built-in sensors, for measuring concrete structure
40 internal strain.Built-in sensors include：A pair of fixtures 10, are fixed in concrete structure 40；Memorial alloy senses silk
20, it is arranged between a pair of fixtures 10 and in tensioning state, its two ends is connected with a pair of fixtures 10 respectively, positioned at coagulation
In soil structure 40；Couple of conductor 30, couple of conductor 30 is connected with memorial alloy sensing silk 20, and couple of conductor 30 is located at respectively
Memorial alloy senses the two ends of silk 20, and the Part I of wire 30 is located in concrete structure 40, and Part II stretches out concrete
Structure 40, the Part II of wire 30 is used to be connected with monitor.
The deformation of silk 20 is sensed in built-in sensors in the present embodiment by memorial alloy to monitor concrete structure 40
Internal strain, compared to the constantan material used in traditional foil gauge, the resistivity of memorial alloy has obvious advantage,
Under the conditions of equivalent variations, memorial alloy has larger resistance variations, and measurement sensitivity is greatly improved.
As shown in Fig. 2 concrete structure 40 is when shaping is made, it is required for setting cage bar A and hoop in concrete structure 40
Muscle B, in the present embodiment, memorial alloy sensing silk 20 is arranged between a pair of stirrup B, that is to say, that mixed in the present embodiment
Stirrup in Xtah Crude Clay structure 40 can be as the fixture 10 in memorial alloy sensing silk 20.
In the present embodiment, memorial alloy sensing silk 20 is specially Ti-Ni memorial alloys.Ti-Ni memorial alloys are not dissolved in
Common acid, such as hydrochloric acid, sulfuric acid, nitric acid, also do not react with alkali, are particularly well-suited to the stronger environment of corrosivity, also,
Ti-Ni memorial alloys have good recoverable force performance, and recoverable strain is general up to 8%, and measurement can be repeated several times.Separately
Outward, the diameter of the memorial alloy sensing silk 20 in the present embodiment is less than 1mm, in addition, the spacing between a pair of fixtures 10 is
150mm, that is to say, that the length of the memorial alloy sensing silk 20 between a pair of fixtures 10 is 150mm.Wire 30 is from copper
Wire.
In the present embodiment, the two ends of memorial alloy sensing silk 20 are fastened on a pair of fixtures 10 respectively, and note
Recall alloy sensing silk 20 to be fixed by 502 glue with the wound section of fixture.In addition, copper conductor 30 senses silk with memorial alloy
20 are connected by soldering, and solder joint therebetween is provided with glue layer, and glue layer herein is obtained by 502 glue, 502 glue
Layer is reinforced and protected to the solder joint of the two.
Of course, in other specific embodiments, memorial alloy sensing silk may be used also in built-in sensors of the present utility model
To select other memory alloy materials, adnic, copper aluminum series alloy, copper Zn based alloy, iron-based alloy etc.；Wire also may be used
To select the conductor material such as gold, silver, iron, tin, aluminium；A pair of spacing of fixture can also for 100mm, 125mm, 140mm,
165mm, 180mm, 200mm etc.；Additionally, connected mode and memorial alloy sensing silk between memorial alloy sensing silk and fixture
Connected mode between conductor can be adjusted according to actual needs, and here is omitted.
Embodiment two
The invention also discloses a kind of method that concrete structure internal strain is monitored by above-mentioned built-in sensors：
A pair of fixtures are set in the inside of concrete structure, memorial alloy sensing silk is set between a pair of fixtures, memory is closed
The two ends of gold sensing silk are separately fixed on a pair of fixtures, and memorial alloy sensing silk is tensioned between a pair of fixtures,
The connecting wire on memorial alloy sensing silk, and wire is stretched out in into concrete structure, during the structure change of concrete structure,
Memorial alloy senses deformation of filament, and the resistance of memorial alloy sensing silk is changed, and memorial alloy is sensed couple of conductor the resistance of silk
Value changes are transmitted to monitor, and monitor judges concrete knot according to " strain-resistivity " relation that memorial alloy senses silk
The internal strain situation of structure.
After once monitoring terminates, before carrying out next monitoring, first memorial alloy sensor is heated, until memory is closed
Gold sensing silk recovers the shape before deformation.Heat time and temperature to memorial alloy sensing silk need to be sensed according to memorial alloy
The specific size and its deformation extent of silk are specifically set.
Built-in sensors simple structure of the present utility model, measurement sensitivity are high, effectively can monitor in concrete structure
The health status in portion, also, during built-in sensors of the present utility model go for acid or alkali environment or water, the scope of application
Extensively, and usage cycles are long, it is possible to achieve the health monitoring of longer cycle inner concrete structure.Monitoring concrete of the present utility model
The method and step of inside configuration strain is few, easy to operate, can be applied to the concrete such as house, road, tunnel, bridge, dykes and dams, harbour
Monitoring structural health conditions field.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of built-in sensors, the internal strain for measuring concrete structure, it is characterised in that including：
A pair of fixtures, are fixed in the concrete structure；
Memorial alloy sense silk, be arranged between fixture described in a pair and in tensioning state, its two ends respectively with a pair of institutes
Fixture connection is stated, in the concrete structure；
Couple of conductor, wire described in a pair is connected with memorial alloy sensing silk, and wire described in a pair is located at institute respectively
The two ends that memorial alloy senses silk are stated, the Part I of the wire is located in the concrete structure, and Part II stretches out institute
Concrete structure is stated, the Part II of the wire is used to be connected with monitor.
2. built-in sensors as claimed in claim 1, it is characterised in that：
The memorial alloy sensing silk is Ti-Ni memorial alloys；
And/or；
The wire is copper wires.
3. built-in sensors as claimed in claim 1, it is characterised in that：
The diameter of the memorial alloy sensing silk is less than 1mm；
And/or；
The spacing of fixture described in a pair is 100~200mm.
4. built-in sensors as claimed in claim 1, it is characterised in that：
The two ends of the memorial alloy sensing silk are fastened on fixture described in a pair respectively, and the memorial alloy is sensed
Fixed by glue between silk and the fixture.
5. built-in sensors as claimed in claim 1, it is characterised in that：
The wire is welded on memorial alloy sensing silk, and is fixed by glue therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291871.4U CN206248025U (en) | 2016-11-29 | 2016-11-29 | Built-in sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621291871.4U CN206248025U (en) | 2016-11-29 | 2016-11-29 | Built-in sensors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248025U true CN206248025U (en) | 2017-06-13 |
Family
ID=59002930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621291871.4U Active CN206248025U (en) | 2016-11-29 | 2016-11-29 | Built-in sensors |
Country Status (1)
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| CN (1) | CN206248025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482629A (en) * | 2016-11-29 | 2017-03-08 | 上海浦东路桥建设股份有限公司 | Built-in sensors and the method for monitoring xoncrete structure internal strain |
-
2016
- 2016-11-29 CN CN201621291871.4U patent/CN206248025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106482629A (en) * | 2016-11-29 | 2017-03-08 | 上海浦东路桥建设股份有限公司 | Built-in sensors and the method for monitoring xoncrete structure internal strain |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 1028 Jialin Road, Pudong New Area, Shanghai, 200120 Patentee after: SHANGHAI PUDONG ROAD & BRIDGE CONSTRUCTION Co.,Ltd. Patentee after: Shanghai Pudong Road & Bridge (Group) Co.,Ltd. Address before: 1028 Jialin Road, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI PUDONG ROAD & BRIDGE CONSTRUCTION Co.,Ltd. Patentee before: SHANGHAI PUXING ROAD & BRIDGE CONSTRUCTION ENGINEERING Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 7th floor, No.3, Lane 701, chuanqiao Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201206 Patentee after: Shanghai Pudong Construction Co.,Ltd. Patentee after: Shanghai Pudong Road & Bridge (Group) Co.,Ltd. Address before: 1028 Jialin Road, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI PUDONG ROAD & BRIDGE CONSTRUCTION Co.,Ltd. Patentee before: Shanghai Pudong Road & Bridge (Group) Co.,Ltd. |