CN209197666U - A kind of structure monitoring system - Google Patents
A kind of structure monitoring system Download PDFInfo
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- CN209197666U CN209197666U CN201822268329.2U CN201822268329U CN209197666U CN 209197666 U CN209197666 U CN 209197666U CN 201822268329 U CN201822268329 U CN 201822268329U CN 209197666 U CN209197666 U CN 209197666U
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- frp tendons
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Abstract
The utility model provides a kind of structure monitoring system, including engineering structure, FRP tendons and monitoring device；The FRP tendons are arranged in the position to be detected that engineering structure is equipped with insulating cement, and FRP tendons are equipped with several conducting resinls and form n electrode, brush insulating cement formation insulating layer again in FRP tendons；The electrode being electrically conductive forming is connect with monitoring device；The monitoring device differentiates the stress state of FRP tendons according to the resistance variations of FRP tendons.The utility model passes through the resistance and its changing value in FRP tendons between real-time testing adjacent electrode, combined data processing, can accurately monitoring works structure entirety or local train, reduce the cost of engineering structure health detecting system, while meeting the needs of engineering structure health detecting system.
Description
Technical field
The utility model belongs to the detection research field of engineering structure, and in particular to a kind of structure monitoring system.
Background technique
Currently, for engineering structure health monitoring frequently with foil gauge system, acceleration transducer, GPS system etc. with
Monitor overall deformation and local train.But corresponding monitoring system is huge, system complicated composition, higher cost, influences its popularization
Using.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of structure monitoring system, it can be by continuous fiber material such as FRP tendons
Conducting system is used for the strain of monitoring works structure, and the utility model reduces the cost of engineering structure health detecting system, simultaneously
Meets the needs of engineering structure health detecting system.
The technical solution of the utility model is:
A kind of structure monitoring system, including engineering structure, FRP tendons and monitoring device；
The FRP tendons are arranged in the position to be detected that engineering structure is equipped with insulating cement, and FRP tendons are equipped with several conducting resinl shapes
At n electrode, brush insulating cement forms insulating layer again in FRP tendons；The electrode being electrically conductive forming is connect with monitoring device；
The monitoring device differentiates the stress state of FRP tendons according to the resistance variations of FRP tendons.
In above scheme, the position to be detected of the engineering structure is equipped with fluting；
The FRP tendons are arranged in inner wall equipped in the fluting of insulating cement, and FRP tendons are equipped with several conducting resinls and form n electricity
Pole, the interior brush insulating cement again of fluting form insulating layer；The electrode that the conducting resinl is formed is connect with monitoring device.
Further, the surface of the engineering structure is equipped with longitudinal grooved；
The FRP tendons are arranged in inner wall equipped in the longitudinal grooved of insulating cement, and FRP tendons are equipped with several conducting resinls and form electricity
Pole, brush insulating cement forms insulating layer again in longitudinal grooved.
Further, the surface of the engineering structure is equipped with circumferential helicla flute；
The FRP tendons are arranged in inner wall equipped in the helicla flute of insulating cement, and FRP tendons are equipped with several conducting resinls and form electricity
Pole, brush insulating cement forms insulating layer again in helicla flute.
In above scheme, the FRP tendons are CFRP tendons.
In above scheme, the engineering structure is anchorage.
In above scheme, the monitoring device includes resistance instrument, Data collecting and analysis system；
Two adjacent electrodes form independent resistance unit in n electrode in the FRP tendons, by each resistance unit
Tip electrodes pass through conducting wire respectively and connect with resistance instrument, the resistance instrument is used to measure the resistance of each resistance unit, described
Resistance instrument is connect with Data collecting and analysis system, and the Data collecting and analysis system is used for the resistance surveyed according to resistance instrument
Variation, differentiates the stress state of FRP tendons.
In above scheme, the monitoring device includes voltage instrument, Data collecting and analysis system；
Outermost two end electrodes are connected by conducting wire with constant-current source and ammeter in n electrode in the FRP tendons；
In FRP tendons in addition to outermost two end electrodes, two adjacent electrodes form independent resistance unit, by the end of each resistance unit
Portion's electrode passes through conducting wire respectively and connect with voltage instrument, and the voltage instrument is used to measure the resistance of each resistance unit, the voltage
Instrument is connect with Data collecting and analysis system, and the voltage that the Data collecting and analysis system is used to be surveyed according to voltage instrument becomes
Change, differentiates the stress state of FRP tendons.
A method of strain monitoring is carried out using the structure monitoring system, comprising the following steps:
The position to be detected of the engineering structure is equipped with fluting；
In the interior first brush insulating cement of fluting, FRP tendons are arranged in fluting, several conducting resinls are equipped in FRP tendons and form n
Electrode, the interior brush insulating cement again of fluting form insulating layer；
Two adjacent electrodes form independent resistance unit in n electrode in the FRP tendons, by each resistance unit
Tip electrodes pass through conducting wire respectively and connect with resistance instrument；
The resistance instrument measures the resistance of each resistance unit, and the resistance instrument is connect with Data collecting and analysis system,
The Data collecting and analysis system is used for the resistance variations surveyed according to resistance instrument, is scaled the deflection of FRP tendons, differentiates
The stress state of FRP tendons.
A method of strain monitoring is carried out using the structure monitoring system, comprising the following steps:
The position to be detected of the engineering structure is equipped with fluting；
In the interior first brush insulating cement of fluting, FRP tendons are arranged in fluting, several conducting resinls are equipped in FRP tendons and form n
Electrode, the interior brush insulating cement again of fluting form insulating layer；
Outermost two end electrodes are connected by conducting wire with constant-current source and ammeter in n electrode in the FRP tendons；
In FRP tendons in addition to outermost two end electrodes, two adjacent electrodes form independent resistance unit, by the end of each resistance unit
Portion's electrode passes through conducting wire respectively and connect with voltage instrument, and the voltage instrument is used to measure the resistance of each resistance unit, the voltage
Instrument is connect with Data collecting and analysis system, and the voltage that the Data collecting and analysis system is used to be surveyed according to voltage instrument becomes
Change, is scaled the deflection of FRP tendons, differentiates the stress state of FRP tendons.
Compared with prior art, the utility model has the beneficial effects that
1. structure monitoring system described in the utility model is in engineering structure, in order to realize the entirety prison to engineering structure
It surveys, for the system by the resistance and its changing value in FRP tendons between real-time testing adjacent electrode, combined data processing can be accurate
The entirety or local train of ground monitoring works structure, and system is simple, data are reliable, it is easy to implement, meanwhile, reduce monitoring system
The influence united to engineering structure, and position, size and the electrode arrangement of FRP tendons can be adjusted according to the actual demand of engineering structure, lead to
It crosses to the resistance test between adjacent electrode, reduces the cost of engineering structure health detecting system, while it is strong to meet engineering structure
The demand of health detection system.
2. the utility model designs longitudinal grooved first on engineering structure position to be monitored and/or along engineering structure appearance
Face design screw arrangement fluting, depth can be lower than longitudinal grooved, it is above fluting be used equally for insulating layer, FRP tendons, electrode,
The arrangement of conducting wire etc..Engineering structure longitudinal grooved, screw slotting inside inject one layer of insulating cement, after maintenance, make fluting
Periphery forms blanket insulative layer, and good with engineering structure bonding, to guarantee that engineering structure and FRP tendons, electrode etc. insulate.Work
When journey structure stress, FRP tendons are in its arranged direction by power, and FRP tendons generate axial deformation, and FRP tendons resistance changes, and export
Resistance changes, and data analysis system calculates increased resistance value, be scaled FRP tendons axial deformation, sentence according to resistance measured value
The stress state of other FRP tendons, output phase are answered as a result, to reach real-time monitoring anchor device structure, realize engineering structure health monitoring
Purpose.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the circuit diagram of the utility model embodiment 1.
Fig. 2 is anchor device structure schematic diagram.
Fig. 3 is anchorage cross section structure figure.
Fig. 4 is electrode structural chart.
Fig. 5 is the circuit arrangement and monitoring system schematic of embodiment 1.
Fig. 6 is the circuit diagram of the utility model embodiment 2.
Fig. 7 is the circuit arrangement and monitoring system schematic of embodiment 2.
In figure: 1. anchorages, 2. longitudinal grooveds, 3. helicla flutes, 4. insulating cements, 5.CFRP muscle, 6. first electrodes, 7. second electricity
Pole, 8. third electrodes, 9. n-th electrodes, 10. resistance instrument, 11. conducting wires, 12. data collection systems, 13 data transmission systems, 14.
Data analysis system, 15. conducting resinls, 16. (n-1)th electrodes, 17. the 4th electrodes, 18, voltage instrument.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
The orientation or position of the instructions such as degree ", " thickness ", "upper", "lower", " axial direction ", " radial direction ", "vertical", "horizontal", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be construed as a limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include one or more of the features.It is " more in the description of the present invention,
It is a " it is meant that two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
Embodiment 1
Fig. 1 show a kind of embodiment of structure monitoring system described in the utility model, the structure monitoring system packet
Include engineering structure, FRP tendons and monitoring device；
Preferably, the FRP tendons are CFRP tendons 5, and CFRP tendons 5 are CFRP/beam；The engineering structure is anchorage 1.
The position to be detected of the anchorage 1 is equipped with fluting；Specifically, the outer surface of the anchorage 1 is equipped with longitudinal grooved 2
With/helicla flute 3, interference is few, and monitoring effect is more acurrate.The longitudinal grooved 2 is used to measure the axial deformation of anchorage 1；The spiral shell
Spin slot 3 is for measuring circumferential deformation.
As shown in Fig. 2,3 and 4, one layer of insulating cement 4 is brushed in longitudinal grooved 2 and/helicla flute 3, is solidified to insulating cement 4, institute
State CFRP tendons 5 be arranged in inner wall equipped with insulating cement 4 longitudinal grooved 2 and/helicla flute 3 in, but the CFRP tendons 5 in helicla flute 3 with
The CFRP tendons 5 of longitudinal grooved 2 are mutually indepedent, insulate.CFRP tendons 5 are equipped with several conducting resinls 15 and form n electrode, conducting resinl 15
CFRP tendons 5 are fixed on 4 surface of insulating cement.Electrode is connect with independent conducting wire 11, and is connect by conducting wire 11 with monitoring device.
Conducting wire 11 can be locally embedded in fluting 2 and/helicla flute 3, and brush insulating cement 4 forms insulating layer again；15 shape of conducting resinl
At electrode connect with monitoring device；The monitoring device differentiates the stress shape of CFRP tendons 5 according to the resistance variations of CFRP tendons 5
State.
The monitoring device includes resistance instrument 10, Data collecting and analysis system；The Data collecting and analysis system can
To include data collection system 12, data transmission system 13 and data analysis system 14.The monitoring data of the resistance instrument 10 pass
It is defeated by data collection system 12, and data analysis system 14 is sent to by data transmission system 13.According to different engineering structures
Monitoring needs, the adjustable interval of electrode.
Two adjacent electrodes form independent resistance unit in n electrode in the CFRP tendons 5, by each resistance list
The tip electrodes of member pass through conducting wire 11 respectively and are connected with the test interface of resistance instrument 10, and the resistance instrument 10 is for measuring each electricity
The resistance of unit is hindered, the resistance instrument 10 is connect with Data collecting and analysis system, and the Data collecting and analysis system is used for
According to the resistance variations that resistance instrument 10 is surveyed, the stress state of CFRP tendons 5 is differentiated.
Specifically, being equipped with first electrode 6, second electrode 7, third electrode 8, the 4th electrode 17 ... in the CFRP tendons 5
(n-1)th electrode 16, the n-th electrode 9；The detection position different zones of CFRP tendons 5 become individual resistors unit, and conducting wire 11 will be adjacent
Two electrodes form independent resistance unit, and the tip electrodes of each resistance unit are passed through conducting wire 11 respectively and are connected with resistance instrument 10
It connects, 10 measuring resistances of resistance instrument are mutually independent.
As shown in figure 5, a kind of method for carrying out strain monitoring using the structure monitoring system, comprising the following steps:
The position to be detected design fluting of anchorage 1 is for example stated in engineering structure first；
In the interior first brush insulating cement 4 of fluting, CFRP tendons 5 are arranged in fluting, several conducting resinls 15 are equipped in CFRP tendons 5
N electrode is formed, the interior brush insulating cement 4 again of fluting forms insulating layer；
Two adjacent electrodes form independent resistance unit in n electrode in the CFRP tendons 5, by each resistance list
The tip electrodes of member pass through conducting wire 11 respectively and connect with resistance instrument 10；
The resistance instrument 10 measures the resistance of each resistance unit, and the resistance instrument 10 connects with Data collecting and analysis system
It connects, the Data collecting and analysis system is used for the resistance variations surveyed according to resistance instrument 10, is scaled the deformation of CFRP tendons 5
Amount differentiates the stress state of CFRP tendons 5.
Embodiment 2
The present embodiment 2 the difference from embodiment 1 is that, the monitoring device includes voltage instrument 10, data collection and analysis
System；
Outermost two end electrodes pass through conducting wire 11 and constant-current source and ammeter string in n electrode in the CFRP tendons 5
Connection；In CFRP tendons 5 in addition to outermost two end electrodes, two adjacent electrodes form independent resistance unit, by each resistance list
The tip electrodes of member pass through conducting wire 11 respectively and connect with voltage instrument 18, and the voltage instrument 18 is used to measure the electricity of each resistance unit
Resistance, the voltage instrument 18 are connect with Data collecting and analysis system, and the Data collecting and analysis system is used for according to voltage instrument
18 voltage changes surveyed differentiate the stress state of CFRP tendons 5.
Specifically, the both ends first electrode 6 and the n-th electrode 9 in the CFRP tendons 5 pass through conducting wire 11 and constant-current source and electricity
Flow table series connection, and pass through the numerical value of ammeter reading constant current；The CFRP tendons 5 pass through second electrode 7, third electrode 8, the
Four the (n-1)th electrodes of electrode 17 ... 16 form multiple individual resistors units；The tip electrodes of each resistance unit are passed through respectively and are led
Line 11 is connect with voltage instrument 18, and the voltage instrument 18 is used to measure the resistance of each resistance unit, and 18 measuring resistances of voltage instrument are equal
Independently of each other.
A method of strain monitoring is carried out using the structure monitoring system, comprising the following steps:
Fluting is equipped at the position to be detected of engineering structure first；
In the interior first brush insulating cement 4 of fluting, CFRP tendons 5 are arranged in fluting, several conducting resinls 15 are equipped in CFRP tendons 5
N electrode is formed, the interior brush insulating cement 4 again of fluting forms insulating layer；
Outermost two end electrodes pass through conducting wire 11 and constant-current source and ammeter string in n electrode in the CFRP tendons 5
Connection；In CFRP tendons 5 in addition to outermost two end electrodes, two adjacent electrodes form independent resistance unit, by each resistance list
The tip electrodes of member pass through conducting wire 11 respectively and connect with voltage instrument 18, and the voltage instrument 18 is used to measure the electricity of each resistance unit
Resistance, the voltage instrument 18 are connect with Data collecting and analysis system, and the Data collecting and analysis system is used for according to voltage instrument
18 voltage changes surveyed are scaled the deflection of CFRP tendons 5, differentiate the stress state of CFRP tendons 5.
Although not each embodiment only includes one it should be appreciated that this specification describes according to various embodiments
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solutions in the various embodiments may also be suitably combined for bright book, and forming those skilled in the art can be with
The other embodiments of understanding.
The series of detailed descriptions listed above only for the utility model possible embodiments it is specific
Illustrate, they are all without departing from made by the utility model skill spirit etc. not to limit the protection scope of the utility model
Effect embodiment or change should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of structure monitoring system, which is characterized in that including engineering structure, FRP tendons and monitoring device；
The FRP tendons are arranged in the position to be detected that engineering structure is equipped with insulating cement (4), and FRP tendons are equipped with several conducting resinls
(15) n electrode is formed, brush insulating cement (4) formation insulating layer again in FRP tendons；The electrode and monitoring that the conducting resinl (15) is formed
Device connection；
The monitoring device differentiates the stress state of FRP tendons according to the resistance variations of FRP tendons.
2. structure monitoring system according to claim 1, which is characterized in that the position to be detected of the engineering structure is equipped with
Fluting；
The FRP tendons are arranged in inner wall equipped in the fluting of insulating cement (4), and FRP tendons are equipped with several conducting resinls (15) and form n
Electrode, the interior brush insulating cement (4) again of fluting form insulating layer；The electrode that the conducting resinl (15) is formed is connect with monitoring device.
3. structure monitoring system according to claim 2, which is characterized in that the surface of the engineering structure is equipped with longitudinal open
Slot (2)；
The FRP tendons are arranged in inner wall equipped in the longitudinal grooved (2) of insulating cement (4), and FRP tendons are equipped with several conducting resinls (15)
Electrode is formed, the interior brush insulating cement (4) again of longitudinal grooved (2) forms insulating layer.
4. structure monitoring system according to claim 2 or 3, which is characterized in that the surface of the engineering structure is equipped with ring
To helicla flute (3)；
The FRP tendons are arranged in inner wall equipped in the helicla flute (3) of insulating cement (4), and FRP tendons are equipped with several conducting resinls (15) shape
At electrode, brush insulating cement (4) forms insulating layer again in helicla flute (3).
5. structure monitoring system according to claim 1, which is characterized in that the FRP tendons are CFRP tendons (5).
6. structure monitoring system according to claim 1, which is characterized in that the engineering structure is anchorage (1).
7. structure monitoring system according to claim 1, which is characterized in that the monitoring device include resistance instrument (10),
Data collecting and analysis system；
Two adjacent electrodes form independent resistance unit in n electrode in the FRP tendons, by the end of each resistance unit
Portion's electrode passes through conducting wire (11) respectively and connect with resistance instrument (10), and the resistance instrument (10) is used to measure the electricity of each resistance unit
Resistance, the resistance instrument (10) connect with Data collecting and analysis system, and the Data collecting and analysis system is used for according to resistance
The resistance variations that instrument (10) is surveyed, differentiate the stress state of FRP tendons.
8. structure monitoring system according to claim 1, which is characterized in that the monitoring device include voltage instrument (18),
Data collecting and analysis system；
Outermost two end electrodes are connected by conducting wire (11) with constant-current source and ammeter in n electrode in the FRP tendons；
In FRP tendons in addition to outermost two end electrodes, two adjacent electrodes form independent resistance unit, by the end of each resistance unit
Portion's electrode passes through conducting wire (11) respectively and connect with voltage instrument (18), and the voltage instrument (18) is used to measure the electricity of each resistance unit
Resistance, the voltage instrument (18) connect with Data collecting and analysis system, and the Data collecting and analysis system is used for according to voltage
The voltage change that instrument (18) is surveyed, differentiates the stress state of FRP tendons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268329.2U CN209197666U (en) | 2018-12-29 | 2018-12-29 | A kind of structure monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822268329.2U CN209197666U (en) | 2018-12-29 | 2018-12-29 | A kind of structure monitoring system |
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| CN209197666U true CN209197666U (en) | 2019-08-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539969A (en) * | 2018-12-29 | 2019-03-29 | 江苏大学 | A kind of structure monitoring system and its method |
| CN116659573A (en) * | 2023-05-23 | 2023-08-29 | 南通理工学院 | CFRP sensor point distribution method suitable for health monitoring of anchorage structure |
-
2018
- 2018-12-29 CN CN201822268329.2U patent/CN209197666U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539969A (en) * | 2018-12-29 | 2019-03-29 | 江苏大学 | A kind of structure monitoring system and its method |
| CN116659573A (en) * | 2023-05-23 | 2023-08-29 | 南通理工学院 | CFRP sensor point distribution method suitable for health monitoring of anchorage structure |
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