CN108761048A - A kind of complete set of equipments for detecting concrete shrinkage stress - Google Patents
A kind of complete set of equipments for detecting concrete shrinkage stress Download PDFInfo
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- CN108761048A CN108761048A CN201810541035.4A CN201810541035A CN108761048A CN 108761048 A CN108761048 A CN 108761048A CN 201810541035 A CN201810541035 A CN 201810541035A CN 108761048 A CN108761048 A CN 108761048A
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- test block
- shrinkage stress
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- concrete test
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- 238000012360 testing method Methods 0.000 claims abstract description 62
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000013011 mating Effects 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000002474 experimental method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009662 stress testing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of complete set of equipments for detecting concrete shrinkage stress, including frame body, it is provided with the fixture for sandwiched fixing concrete test block in the frame body, the mating testing agency for being provided with the shrinkage stress for detecting concrete test block of fixture and the telescoping mechanism for concrete test block being drawn/being pushed back by the testing result of testing agency raw footage；The fixture includes the clamp block being fixed on frame body and the dynamic fixture block that is equipped with telescoping mechanism；The testing agency includes signal analysis and processing component and multiple laser displacement sensors for being arranged on dynamic fixture block, laser displacement sensor is connect with signal analysis and processing assembly communication, the force snesor being connect with signal analysis and processing assembly communication is provided on the telescoping mechanism, force snesor is for detecting the drawing/pressure for concrete test block being drawn/being pushed back raw footage；Compared with prior art, the present invention of low cost and high to the accuracy of detection of concrete shrinkage stress.
Description
Technical field
The present invention relates to concrete NDT technical fields, and in particular to a kind of for detecting the complete of concrete shrinkage stress
Equipment.
Background technology
With being constantly progressive for national economy, the continuous development of engineering project, will be used wider and wider for concrete be general.
Also more deep to the research of concrete this material preferably to use concrete, among these, the cracking research of concrete is just
It is wherein important one of component part.The contraction fissure of concrete is common one of concrete cracking phenomenon, mixed to study
The contraction fissure for coagulating soil, need to measure the shrinkage stress of concrete.
It measures shrinkage stress and produces the method used as theoretical calculation, i.e., in theoretical side, researchers pass through capillary
Power is theoretical, repulsive interaction is theoretical, solid surface tension is theoretical and interlayer water loss theory is answered to explain, calculate the contraction of concrete
Power, but shrinkage stress is only theoretically calculated, often have the following defects：
These computational methods use a large amount of approximate, hypothesis condition and artificial settings parameter, can cause to calculate not
Accurately；There is overlapping in these theoretical scope of applications, can not distinguish specifically has several mechanism under normal circumstances in some stage
In the shrinkage stress for influencing, decide concrete.
To solve the above problems, from experiment level carries out the test of concrete shrinkage stress, research just seems necessary.
However due to lacking testing equipment needed for related experiment at present, concrete shrinkage stress testing experiment develops slowly, and science is ground
Study carefully field to set with a kind of market concrete shrinkage stress experiment that urgently precision is high, cheap satisfaction studies requirement at this stage
Standby appearance.
Invention content
For the deficiency in the presence of the prior art, the purpose of the present invention is to provide one kind for detecting concrete shrinkage
The complete set of equipments of stress, to obtain, a kind of precision is high, cheap equipment is detected concrete shrinkage stress.
To achieve the above object, present invention employs the following technical solutions：One kind is for detecting concrete shrinkage stress
Complete set of equipments, including frame body is provided with the fixture for sandwiched fixing concrete test block, the mating setting of fixture in the frame body
It is useful for the testing agency of the shrinkage stress of detection concrete test block and by the testing result of testing agency by concrete test block
Draw/push back the telescoping mechanism of raw footage；
The fixture includes the clamp block being fixed on frame body and the dynamic fixture block that is equipped with telescoping mechanism；It is described
Testing agency includes signal analysis and processing component and multiple laser displacement sensors for being arranged on dynamic fixture block, laser displacement sensing
Device is connect with signal analysis and processing assembly communication, is provided on the telescoping mechanism and is connect with signal analysis and processing assembly communication
Force snesor, force snesor is for detecting the drawing/pressure for concrete test block being drawn/being pushed back raw footage.
Operation principle：The fixture being made up of clamp block and dynamic fixture block carries out sandwiched to concrete test block and fixes, and is carrying out
When concrete shrinkage stress is tested, answered under shrinkage stress effect by laser displacement sensor to detect mixed mud test block
Become, the position that analysis obtains mixed mud test block is carried out to the signal that laser displacement sensor detects by signal analysis and processing component
Shifting amount, to make telescoping mechanism according to its displacement come draw/press concrete test block, so that concrete test block is returned to raw footage；Lead to again
Crossing force snesor detection telescoping mechanism draws/pushes back drawing/pressure transmission required when raw footage to be analyzed concrete test block to signal
Processing component passes through the conversion of power-stress relation, you can obtains the shrinkage stress of the concrete test block under this age.
Compared with the prior art, the present invention has the advantages that：
1, this equipment is only by frame body, clamp block, dynamic fixture block, laser displacement sensor, force snesor and signal analysis and processing
The common structure composition such as component, it is of low cost；
2, it is strained under shrinkage stress effect by laser displacement sensor detection mixed mud test block, and coordinate force passes
The use of sensor and signal analysis and processing component is recorded, is shown, analyzed and is calculated to the strain of mixed mud test block, is obtained
The shrinkage stress of concrete test block, testing result precision are high.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram for detecting the complete set of equipments of concrete shrinkage stress of the present invention；
Fig. 2 is the schematic diagram after connecting seat and chuck structure are disconnected in Fig. 1；
Fig. 3 is the schematic diagram of chuck structure in Fig. 1；
Fig. 4 is the sectional view of Fig. 3.
Below by specific implementation mode, the present invention is described in further detail：
Reference numeral in Figure of description includes：Frame body 1, clamp block 2, dynamic fixture block 3, laser displacement sensor 4, power pass
Sensor 5, Temperature Humidity Sensor 6, signal analyzer 7, signal amplifier 8, hydraulically extensible device 9, connecting seat 10, card apertured 11, card
Dish structure 12, shell 121, claw 122, chuck 123, providing holes 124, worm screw 125, mounting groove 126.
Specific implementation mode
Embodiment
With reference to shown in 1~Fig. 4 of figure：It is a kind of to be used to detect the complete set of equipments of concrete shrinkage stress, including the frame being square
Body 1, (concrete test block includes interconnecting piece and positioned at connection to the fixture for being provided in frame body 1 for sandwiched fixing concrete test block
The clamping part that portion both ends are symmetrical set, the cross section of clamping part are in isosceles trapezoid shape, and the parallel short sides of clamping part and connection
Portion is connected, and the shape design of concrete test block is fixed convenient for carrying out sandwiched to it, and concrete tries during draw/press
Block is fixed well), the mating testing agency for being provided with the shrinkage stress for detecting concrete test block of fixture and pass through detection machine
Concrete test block is drawn/is pushed back the telescoping mechanism of raw footage by the testing result of structure；Fixture includes being fixed on frame body 1 to determine
Fixture block 2 and the dynamic fixture block 3 being equipped with telescoping mechanism；Testing agency includes signal analysis and processing component and is arranged in dynamic fixture block
Multiple laser displacement sensors 4 on 3, laser displacement sensor 4 is two in the present embodiment, two laser displacement sensors 4
The both sides of telescoping mechanism are symmetricly set on, laser displacement sensor 4 is connect with signal analysis and processing assembly communication, described flexible
The force snesor 5 being connect with signal analysis and processing assembly communication is provided in mechanism, force snesor 5 tries concrete for detecting
Block draws/pushes back drawing/pressure of raw footage.
In order to which the humiture to concrete test block is detected and obtains high accuracy of detection, to analyze humiture to coagulation
The influence of native test block shrinkage stress, signal analysis and processing component also communication link are connected to multiple for detecting the warm and humid of concrete test block
The Temperature Humidity Sensor 6 of degree, the embedded concrete test block of multiple Temperature Humidity Sensors 6 is interior and linearly arranges；Used letter
Number analyzing processing component includes signal analyzer 7 and the signal amplifier 8 that is communicated to connect with signal analyzer 7, signal analyzer 7
It can be computer；After laser displacement sensor 4 amplifies the strain of detection by signal amplifier 8, analyzed by signal
Device 7 is shown, is analyzed and sent out corresponding instruction.
Telescoping mechanism includes setting the hydraulically extensible device 9 that mechanism is fixed on frame body 1, power sensing by card in this programme
In a ring, force snesor 5 is set on the telescopic shaft of hydraulically extensible device 9 device 5, and clamp block 2 includes the riser and and coagulation of frame body 1
The first clamping jaw that two bevel edges of one of native test block clamping part fit closely, two the first clamping jaws are by the first bolt and erect
Plate is connected, and dynamic fixture block 3 includes the mounting plate being connected on the telescopic shaft of hydraulically extensible device 9, is connected by the second bolt on mounting plate
It connects there are two the second clamping jaw, two the second clamping jaws are closely pasted with two bevel edges of another clamping part of concrete test block respectively
It closes.
Card sets mechanism and includes the connecting seat 10 being arranged on hydraulically extensible device 9 and be fixed on frame body 1 in this programme
123 structure 12 of chuck, its circumferential direction of 10 upper edge of connecting seat offer multiple card apertured 11, and 123 structure 12 of chuck includes shell
121, multiple claws 122 being equipped with one by one with card apertured 11 and each claw of driving 122 are carried out at the same time opposite or mutually from fortune
Dynamic chuck 123,121 middle part of shell are provided with the mounting groove 126 for being embedded in connecting seat 10, and chuck 123 is rotatably arranged on shell
In 121, claw 122 is slidably arranged in shell 121, and the edge side wall of chuck 123 is evenly equipped with the gear teeth and forms worm gear, shell
It is provided with providing holes 124 on 121, inserted with worm screw 125 in providing holes 124, handle, worm screw 125 and worm gear is connected on worm screw 125
Engagement setting；By handle rotary worm 125, worm gear is made to rotate, to make chuck 123 be rotated, to which driving is every
A claw 122 moves, and when connecting seat 10 and 123 structure 12 of chuck are attached, rotational handle makes each claw 122
It is inserted into respectively in corresponding card apertured 11 and carries out clamping fixed, when so that connecting seat 10 is disconnected with 123 structure 12 of chuck,
Handle is rotated backward, each claw 122 is made to exit the state of being disconnected from corresponding card apertured 11 respectively；Card sets making for mechanism
It is high and easy to connect with the fixation reliability to telescoping mechanism.
In the present embodiment there are four card apertured 11,123 structure 12 of chuck is 123 structure 12 of chuck, and card is made to set mechanism
Energy with good stability after being connect with telescoping mechanism.
In use, concrete test block is fixed by clamp block 2 and 3 sandwiched of dynamic fixture block, then by multiple temperature and humidity sensings
In the linear insertion concrete test block of device 6, acted in shrinkage stress by laser displacement sensor 4 to detect mixed mud test block
It is lower to strain, it is transferred to signal analyzer 7 after amplifying the strain signal of generation by signal amplifier 8 and recorded, shown
Show and analyze, sending out instruction makes 9 drawings of hydraulically extensible device/pressure concrete test block, and concrete test block is made to return to raw footage；Pass through power again
Sensor 5 detects hydraulically extensible device 9 and draws/push back drawing/pressure transmission required when raw footage to amplify concrete test block to signal
Device 8 passes to signal analyzer 7 and is recorded, shown and analyzed after carrying out signal amplification, by the conversion of power-stress relation,
It can be obtained the shrinkage stress of the concrete test block under this age；Temperature Humidity Sensor 6 is by the humiture of concrete test block simultaneously
Signal analyzer 7 is passed to after being detected, and analyzes influence of the humiture to the shrinkage stress of concrete test block.
Laser displacement sensor 4, force snesor 5, Temperature Humidity Sensor 6, signal analyzer 7, signal in this programme are put
Device 8 and hydraulically extensible device 9 are common element greatly.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (5)
1. a kind of complete set of equipments for detecting concrete shrinkage stress, which is characterized in that including frame body (1), the frame body (1)
It is inside provided with the fixture for sandwiched fixing concrete test block, mating be provided with of fixture is answered for detecting the contraction of concrete test block
The testing agency of power and the telescoping mechanism for concrete test block being drawn/being pushed back by the testing result of testing agency raw footage；
The fixture includes the clamp block (2) being fixed on frame body (1) and the dynamic fixture block being equipped with telescoping mechanism
(3)；The testing agency includes the multiple laser displacement sensors of signal analysis and processing component and setting on dynamic fixture block (3)
(4), laser displacement sensor (4) is connect with signal analysis and processing assembly communication, is provided on the telescoping mechanism and signal
Concrete test block is drawn/is pushed back former length by the force snesor (5) of analyzing processing assembly communication connection, force snesor (5) for detecting
Drawing/pressure of degree.
2. a kind of complete set of equipments for detecting concrete shrinkage stress according to claim 1, it is characterised in that：It is described
Signal analysis and processing component also communication link is connected to multiple Temperature Humidity Sensors (6) for detecting the humiture of concrete test block,
It arranges in the embedded concrete test block of multiple Temperature Humidity Sensors (6) and linearly.
3. a kind of complete set of equipments for detecting concrete shrinkage stress according to claim 1, it is characterised in that：It is described
Signal analysis and processing component includes signal analyzer (7) and the signal amplifier (8) that is communicated to connect with signal analyzer (7).
4. a kind of complete set of equipments for detecting concrete shrinkage stress according to claim 2 or 3, it is characterised in that：
The telescoping mechanism includes setting the hydraulically extensible device (9) that mechanism is fixed on frame body (1), hydraulically extensible device (9) by card
Telescopic shaft be connected with dynamic fixture block (3).
5. a kind of complete set of equipments for detecting concrete shrinkage stress according to claim 4, it is characterised in that：It is described
It includes the connecting seat (10) being arranged on hydraulically extensible device (9) and the chuck (123) being fixed on frame body (1) knot that card, which sets mechanism,
Structure (12), its circumferential direction of connecting seat (10) upper edge offer multiple card apertured (11), and chuck (123) structure (12) includes multiple
The claw (122) and each claw (122) of driving being equipped with one by one with card apertured (11) are carried out at the same time opposite or phase from movement
Chuck (123), the edge side wall of chuck (123) is evenly equipped with the gear teeth and forms worm gear, and worm gear is provided with driving chuck (123)
The worm screw (125) of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541035.4A CN108761048A (en) | 2018-05-30 | 2018-05-30 | A kind of complete set of equipments for detecting concrete shrinkage stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541035.4A CN108761048A (en) | 2018-05-30 | 2018-05-30 | A kind of complete set of equipments for detecting concrete shrinkage stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108761048A true CN108761048A (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810541035.4A Pending CN108761048A (en) | 2018-05-30 | 2018-05-30 | A kind of complete set of equipments for detecting concrete shrinkage stress |
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| CN (1) | CN108761048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594239A (en) * | 2022-03-08 | 2022-06-07 | 信阳职业技术学院 | Cement-based material shrinkage stress detection device |
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|---|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594239A (en) * | 2022-03-08 | 2022-06-07 | 信阳职业技术学院 | Cement-based material shrinkage stress detection device |
| CN114594239B (en) * | 2022-03-08 | 2023-08-08 | 信阳职业技术学院 | Cement-based material shrinkage stress detection device |
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Application publication date: 20181106 |