CN106441074A - Piezoelectric ceramic tube-based cylindrical intelligent aggregate device - Google Patents
Piezoelectric ceramic tube-based cylindrical intelligent aggregate device Download PDFInfo
- Publication number
- CN106441074A CN106441074A CN201610864550.7A CN201610864550A CN106441074A CN 106441074 A CN106441074 A CN 106441074A CN 201610864550 A CN201610864550 A CN 201610864550A CN 106441074 A CN106441074 A CN 106441074A
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- Prior art keywords
- concrete
- piezoelectric ceramic
- ceramic tube
- steel tube
- intelligent aggregate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/20—Investigating the presence of flaws
- G01N27/205—Investigating the presence of flaws in insulating materials
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a piezoelectric ceramic tube-based cylindrical intelligent aggregate device and belongs to the civil engineering concrete component structure health monitoring field. Concrete structures are affected by external environment during construction and service processes, and as a result, the structures will be damaged to different degrees, as for a pure concrete columnar component, tiny cracks and damage will occur on the interior and surface of the pure concrete columnar component, and as for a concrete filled steel tube, concrete will be peeled from a steel tube to different degrees. As for the radial damage of this type of columnar structure, based on a characteristic that concrete cracks and the peeling of concrete from a steel tube may affect a wave transfer path, and the energy of received waves will be decreased, active, passive and impedance methods are utilized to infer the states of the concrete and the concrete filled steel tube structure through the change of received signal energy and spectra; and simple and feasible method can be provided for the damage and peeling monitoring of the concrete or the concrete filled steel tube based on the piezoelectric ceramic tube-based cylindrical intelligent aggregate device.
Description
Technical field
Present invention is mainly used for civil engineering concrete (especially column type) element structure health monitoring field, concrete and
Speech, due to being affected by external environment condition during construction and military service, structure can be subject to different degrees of damaging to xoncrete structure
Wound, for pure concrete column member, it is internal and surface can occur various micro-cracks damages.Deposit for concrete filled steel tube
Stripping in various different degrees of concrete and steel pipe.Present invention is generally directed to the radial direction of this kind of columnar structures is damaged, utilize
The presence of distress in concrete and concrete filled steel tube stripping can affect ripple bang path, weakens the feature of the energy of the ripple receiving,
Using actively, the method for passive and impedance, can be speculated in turn by the change of the signal energy that receives and frequency spectrum
Concrete or concrete filled steel tube state in which, this column type intelligent aggregate device based on piezoelectric ceramic tube is work
In journey, concrete or concrete filled steel tubular member damage and peel off a kind of monitoring simple and feasible method of offer.
Background technology
Concrete or concrete filled steel tubular member are one of most basic and modal components in civil structure, modern large-scale
Civil structure, such as large-sized concrete bridge, in skyscraper and concrete dam structures, concrete component plays important propping up
Support acts on, and carries the stress of total, so the reliability of concrete or concrete filled steel tubular member is to ensure that construction quality
And the basis of structure normal service.Therefore, concrete or concrete filled steel tubular member are in the installation quality of construction stage and clothes
The connection state in labour stage is increasingly subject to people's attention.
Piezoelectric ceramics is used in a lot of aspects as a kind of new intellectual material.The piezo-electric effect that it has is any pressure
The key property that electric material all has.Under meeting certain temperature conditionss, when mechanically deform is applied to piezoelectric element,
Internal positive and negative charge center will be caused to occur relative movement to produce polarization a little, thus leading to appearance on two surfaces of element
The contrary bound charge of symbol, and charge density is proportional to external force, this phenomenon is referred to as direct piezoelectric effect.Conversely, in piezoelectricity
Applied voltage on two surfaces of element, due to the effect of electric field, causes the internal positive and negative charge center of piezoelectric element to produce position relatively
Move, lead to the deformation of piezoelectric element, i.e. inverse piezoelectric effect.The present invention exactly utilize this positive piezoelectricity specific to piezoelectric ceramics with
Inverse piezoelectric effect.
For conventional concrete component, because concrete is typically bulky, damage and typically occur in inside, it is radially
Damage check is relatively difficult, construction and be on active service during in be difficult to judge structure whether reach generation damage and lesion development journey
Degree, its damage monitoring is not only wasted time and energy but also the detection for some special constructions also has certain risk.
Content of the invention
In order to solve the above problems, invent one kind and be based on piezoelectric ceramic tube, for detecting concrete or steel tube concrete
The column type intelligent aggregate device that native component mirror image damages, the mock-up (as Fig. 1) of intelligent aggregate, mainly by six part structures
Become, be respectively：Piezoelectric ceramic tube, the anti-electric compound protective layer of waterproof, epoxy resin protective layer, wire, fill out inside cement or marble
Fill layer, cement or marble exterior cover sheets.
It should be noted that intelligent aggregate can realize actively monitoring, passive detection, and structure and piezoelectric ceramics entirety
Impedance monitoring.
A kind of column type intelligent aggregate device based on piezoelectric ceramic tube, including piezoelectric ceramic tube 1, the protection of waterproof anti-electric glue
The internal packed layer 4 of layer 2, epoxy resin protective layer 3, cement or marble, cement or marble exterior cover sheets 5 and wire 6, pressure
Both positive and negative polarity welding lead 6 inside and outside electroceramics pipe 1, is coated with the anti-electric compound protective layer of waterproof 2 and ring inside and outside piezoelectric ceramic tube 1 successively
Oxygen resin protective layer 3, is respectively provided with cement or the internal packed layer 4 of marble and cement or marble inside and outside piezoelectric ceramic tube 1
Exterior cover sheets 5.
Beneficial effects of the present invention：
1st, this device relies on the piezo-electric effect that piezoelectric ceramics has, and finally utilizes electrical signal detection concrete or steel tube concrete
Soil is internal and interface damage state is it is not necessary to manual site's detection, time saving and energy saving.And for concrete component installation with
And integrally-built performance does not affect.
2nd, this device can carry out concrete component damage monitoring using multiple monitoring methods.Can be actively monitoring, quilt
Dynamic monitoring is it is also possible to be monitored using Piezoelectric Impedance method.
3rd, simple structure of the present invention, part is less, makes and installation process is simple, strong applicability, low cost and maintenance side
Just, can effectively detect concrete or concrete filled steel tube faulted condition, there is wide popularization market and application prospect.
Brief description
Fig. 1 is a kind of column type intelligent aggregate device each several part details pictorial diagram based on piezoelectric ceramic tube.
Fig. 2 is a kind of column type intelligent aggregate device overall package pictorial diagram based on piezoelectric ceramic tube.
In figure：1 piezoelectric ceramic tube；The anti-electric compound protective layer of 2 waterproofs；3 epoxy resin protective layers；
4 cement or the internal packed layer of marble；5 cement or marble exterior cover sheets；6 wires.
Specific embodiment
Below in conjunction with accompanying drawing and technical scheme, further illustrate the specific embodiment of the present invention.
The invention provides a kind of column type intelligent aggregate device based on piezoelectric ceramic tube, specific embodiment is as follows：
First inside and outside piezoelectric ceramic tube 1, both positive and negative polarity is welded wire 6, and the transmitting of signal is then to be entered by wire 6 with reception
OK.Then the anti-electric compound protective layer 2 of brush last layer waterproof inside and outside piezoelectric ceramic tube 1, treats that the anti-electric compound protective layer of waterproof 2 is fully cured
Afterwards, it is coated with one layer of epoxy resin protective layer 3 outside the anti-electric compound protective layer of waterproof 2, treat that epoxy resin protective layer 3 is completely solidifying
Gu after in piezoelectric ceramic tube 1 cement injection or marble filler serve as protective layer 4, simultaneously outside piezoelectric ceramic tube
Be one layer of 5cm about cement or marble exterior cover sheets 5, specific practice can outside do a diameter be slightly larger than pressure
The cast mould of electroceramics pipe 1, cement injection or filling marble protective layer 5 between mould and piezo tube 1 pottery.Protection
Layer effect is to protect piezoelectric ceramic tube not affected by external forces, extends sensor life-time.
In addition the column type intelligent aggregate of this piezoelectric ceramic tube 1 can do some changes according to detected object, and it can change
Become part main inclusion piezoelectric ceramic tube 1 size, protective layer material and thickness, some major parameters such as piezoelectric ceramics model
Select application, additionally can suitably increase some other safeguard measures such as two sections of column type sensor increases concrete or Dali
Stone protective cap etc., is exactly also installation site and quantity of column type intelligent aggregate etc..
Claims (1)
1. a kind of column type intelligent aggregate device based on piezoelectric ceramic tube is it is characterised in that this column type intelligent aggregate device
Including filling inside piezoelectric ceramic tube (1), the anti-electric compound protective layer of waterproof (2), epoxy resin protective layer (3), cement or marble
Layer (4), cement or marble exterior cover sheets (5) and wire (6), both positive and negative polarity welding lead (6) inside and outside piezoelectric ceramic tube (1),
It is coated with the anti-electric compound protective layer of waterproof (2) and epoxy resin protective layer (3) successively inside and outside piezoelectric ceramic tube (1), in piezoelectricity pottery
It is respectively provided with cement or the internal packed layer (4) of marble and cement or marble exterior cover sheets (5) inside and outside porcelain tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864550.7A CN106441074A (en) | 2016-09-29 | 2016-09-29 | Piezoelectric ceramic tube-based cylindrical intelligent aggregate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864550.7A CN106441074A (en) | 2016-09-29 | 2016-09-29 | Piezoelectric ceramic tube-based cylindrical intelligent aggregate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441074A true CN106441074A (en) | 2017-02-22 |
Family
ID=58171266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610864550.7A Pending CN106441074A (en) | 2016-09-29 | 2016-09-29 | Piezoelectric ceramic tube-based cylindrical intelligent aggregate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441074A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696115A (en) * | 2019-01-22 | 2019-04-30 | 长安大学 | Cement pavement internal fissure wireless monitor system and fracture width, location determining method |
| CN109696117A (en) * | 2019-01-22 | 2019-04-30 | 长安大学 | Cement pavement internal fissure monitors system and fracture width, location determining method |
| CN109696116A (en) * | 2019-01-22 | 2019-04-30 | 长安大学 | Inside asphalt pavement Crack Monitoring system and fracture width, location determining method |
| CN109813210A (en) * | 2019-01-22 | 2019-05-28 | 长安大学 | Semi-rigid type base internal fissure monitors system and fracture width, location determining method |
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| CN102507655A (en) * | 2011-10-24 | 2012-06-20 | 沈阳建筑大学 | Method for monitoring compaction of concrete-filled steel tube structure based on piezoelectric intelligent aggregate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696115A (en) * | 2019-01-22 | 2019-04-30 | 长安大学 | Cement pavement internal fissure wireless monitor system and fracture width, location determining method |
| CN109696117A (en) * | 2019-01-22 | 2019-04-30 | 长安大学 | Cement pavement internal fissure monitors system and fracture width, location determining method |
| CN109696116A (en) * | 2019-01-22 | 2019-04-30 | 长安大学 | Inside asphalt pavement Crack Monitoring system and fracture width, location determining method |
| CN109813210A (en) * | 2019-01-22 | 2019-05-28 | 长安大学 | Semi-rigid type base internal fissure monitors system and fracture width, location determining method |
| CN109696115B (en) * | 2019-01-22 | 2020-05-19 | 长安大学 | Wireless monitoring system for internal cracks of cement pavement and crack width and position determining method |
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Application publication date: 20170222 |