CN108426773A - Concrete static(al) compression elasticity modulus test automatic acquisition device, system and method - Google Patents
Concrete static(al) compression elasticity modulus test automatic acquisition device, system and method Download PDFInfo
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- CN108426773A CN108426773A CN201810384079.0A CN201810384079A CN108426773A CN 108426773 A CN108426773 A CN 108426773A CN 201810384079 A CN201810384079 A CN 201810384079A CN 108426773 A CN108426773 A CN 108426773A
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 230000003068 static effect Effects 0.000 title claims abstract description 29
- 230000006835 compression Effects 0.000 title claims abstract description 28
- 238000007906 compression Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007787 solid Substances 0.000 claims description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 5
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 5
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0605—Mechanical indicating, recording or sensing means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- 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 concrete static(al) compression elasticity modulus test automatic acquisition devices, system and method, automatic acquisition device includes between the upper and lower every the first fixed frame and the second fixed frame being fixed on concrete sample, it is provided between first fixed frame and the second fixed frame along two symmetrical digital display dial gauges of the vertical axis of concrete sample, and the vertical axis of two digital display dial gauges and concrete sample is respectively positioned in approximately the same plane, digital display dial gauge is by link with the first fixed frame by being fixedly connected, the measuring staff head of digital display dial gauge is contacted with the second fixed frame.By using the digital display dial gauge with data line, personnel amount was not only reduced but also had been convenient for that numerical value is accurately transmitted directly to control system, while having been analyzed convenient for the calculating of control system；By control system, the overall process of 2 precompressed can be realized automatically simultaneously convenient for the airborne charge values of control pressure, rate, without human intervention.
Description
Technical field
The present invention relates to concrete static(al) compression elasticity modulus test technical fields, it particularly relates to a kind of concrete
Static(al) compression elasticity modulus test automatic acquisition device, system and method.
Background technology
When measuring modulus of elasticity of concrete, deformeter should be mounted on the center line of concrete sample both sides and symmetrical
In the both ends of concrete sample, the gauge length that Light deformation measures fixed frame should be 150mm.The measurement accuracy of Light deformation measuring instrument must not
Less than 0.001mm.
Position of the concrete sample on forcing press should be carefully adjusted, its axle center is made to be aligned with the center line of lower platen.It opens
Motor press adjusts ball seat when top board and concrete sample are close, keeps its contact balanced.
Loading keeps in dead load 60S and 30S afterwards record often to the initial load value FO that benchmark stress is 0.5MPa
The deformation of measuring point reads ε 0, should immediately continuously and uniformly loading to the 1/3 payload values Fa that stress is axial compressive strength fcp,
The deformation for recording each measuring point in dead load 60S and 30S afterwards is kept to read ε a.Loading speed used should meet this standard mark
Alignment request is（During the test should continuously and uniformly loading, when strength grade of concrete ＜ C30, loading speed takes each second
0.3-0.5MPa；When strength grade of concrete >=C30 and ＜ C60,0.5-0.8MPa each second is taken；Strength grade of concrete >=
When C60,0.8-1.0MPa each second is taken）.When the ratio between the difference of the above deformation values and their average values are more than 20%, Ying Chong
Above-mentioned test procedure is repeated after new centering concrete sample.If its diminishing can not be made to less than 20%, nothing is this time tested
Effect.
The ratio between difference and their average values for meeting deformation values in confirming concrete sample pair be not more than 20% when, with add
The identical speed of lotus speed is offloaded to the 0.5MPa of benchmark stress（F0）, dead load 60S；Then with same loading and discharge rate
With the holding dead load of 60S（F0 and Fa）At least carry out twice precompressed repeatedly.After the completion of last time precompressed, in benchmark stress
0.5MPa（F0）Hold the deformation reading ε 0 that each measuring point is recorded in lotus 60S and 30S afterwards；Added again with same loading speed
Lotus holds the deformation reading ε a that each measuring point is recorded in lotus 60S and 30S afterwards to Fa.
Currently, in experiment, the most commonly used is common amesdials, the reading of amesdial to go to read by people completely, force value and loading
Rate is entirely that armrest is controlled.It has the drawback that, deform read untrue, force value control is unstable, and rate of loading fluctuates model
Some point cannot be accurately controlled greatly by enclosing, and personnel amount is minimum that 3 people, 2 people see amesdial, 1 people behaviour in experimental project
Make instrument, operating personnel are more when experiment, centering, the complete manual operation of pre-compaction process.It is difficult that accurately control force value and loading are fast
Rate, each numerical value caused is not unique, influences static(al) compression elasticity modulus test result.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Invention content
For above-mentioned technical problem in the related technology, the present invention proposes a kind of concrete static(al) compression elasticity modulus test
Automatic acquisition device, system and method, it is ensured that concrete static(al) compression springform also can be accurately detected in the case of a people
Amount.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A kind of concrete static(al) compression elasticity modulus test automatic acquisition device, including between the upper and lower every being fixed on concrete sample
The first fixed frame and the second fixed frame, be provided with along the concrete between first fixed frame and second fixed frame
Two symmetrical digital display dial gauges of the vertical axis of test specimen, and two digital display dial gauges and the concrete sample
Vertical axis is respectively positioned in approximately the same plane, and the digital display dial gauge is connected by link and first fixed frame by fixed
It connects, the measuring staff head of the digital display dial gauge is contacted with second fixed frame.
Further, first fixed frame and second fixed frame include being sheathed on outside the concrete sample
Annular element, several first holding screws are provided in the circumferential direction of the annular element, first holding screw is described in
The radial direction of annular element extends.
Further, the annular element of first fixed frame is bolted to connection the link, the link
On be provided with and can supply the through-hole that passes through of the digital display dial gauge, be provided with corresponding with the through-hole second on the link
Holding screw.
The invention also discloses a kind of concrete static(al) compression elasticity modulus test system, including automatic acquisition device, institutes
The digital display dial gauge stated in automatic acquisition device is connected with control system by data line, and the control system is also associated with pressure
Machine.
The invention also discloses a kind of application methods of concrete static(al) compression elasticity modulus test system, including following step
Suddenly：
S1 control system control pressure machines make it reach multiple payload values of setting according to the rate of loading of setting, and are set reaching
When fixed payload values by the payload values dead load in the range of setting；
S2 automatic acquisition devices after each payload values dead load and when reaching multiple time points of setting automatic collection when each
Between when putting concrete sample two deformation values, and collected two deformation values are transferred to control system；
S3 control systems by every point of time when concrete sample two deformation values subtract each other after obtain difference, and by difference with
The average value of corresponding two deformation values obtains ratio after being divided by, then ratio is compared with alarming value to judge whether report
It is alert.
Further, in S2, the time point is respectively 60S and 80S.
Further, in S3, the alarming value is 20%, if ratio is more than 20%, control system alarm.
Further, further comprising the steps of：
S4 control systems carry out concrete sample according to the identical rate of loading with S1, payload values and scope control forcing press
Multiple-prepressing, each squeeze time are 60S after payload values dead load；
S5 repeats S1 and S2 after the completion of precompressed.
Beneficial effects of the present invention：By using the digital display dial gauge with data line, personnel amount was not only reduced but also had been convenient for
Numerical value is accurately transmitted directly to control system, while being analyzed convenient for the calculating of control system；By control system, convenient for control
The airborne charge values of pressing pressure, rate can realize the overall processes of 2 precompressed automatically simultaneously, without human intervention, by setting after precompressed
Fixed load value carries out the acquisition of deformation values automatically；It ensure that the accurate and reliable of load value, the stabilization of rate and deformation reading；It can
It reduces personal error and reduces personnel amount simultaneously；Overall structure is simple, and operability is strong, convenient for obtaining accurate concrete static(al)
The test result of compression elasticity modulus test.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is showing for the concrete static(al) compression elasticity modulus test automatic acquisition device described according to embodiments of the present invention
It is intended to；
Fig. 2 is the schematic diagram of the first described according to embodiments of the present invention fixed frame；
Fig. 3 is the front view of the link described according to embodiments of the present invention；
Fig. 4 is the side view of the link described according to embodiments of the present invention；
Fig. 5 is the vertical view of the link described according to embodiments of the present invention；
Fig. 6 is the schematic diagram of the concrete static(al) compression elasticity modulus test system described according to embodiments of the present invention.
In figure：
1, concrete sample；2, the first fixed frame；3, the second fixed frame；4, digital display dial gauge；5, link；6, the first clamp screw
Nail；7, through-hole；8, the second holding screw；9, forcing press.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
As shown in figures 1 to 6, a kind of concrete static(al) compression elasticity modulus test according to embodiments of the present invention is automatic
Harvester, including it is solid every the first fixed frame 2 and the second fixed frame 3 being fixed on concrete sample 1, described first between the upper and lower
Determine to be provided between frame 2 and second fixed frame 3 along two symmetrical digital displays of the vertical axis of the concrete sample 1
Amesdial 4, and the vertical axis of two digital display dial gauges 4 and the concrete sample 1 is respectively positioned in approximately the same plane, institute
State digital display dial gauge 4 by link 5 with first fixed frame 2 by being fixedly connected, the measuring staff head of the digital display dial gauge 4
It is contacted with second fixed frame 3.
In one particular embodiment of the present invention, first fixed frame 2 and second fixed frame 3 include being arranged
Annular element outside the concrete sample 1 is provided with several first holding screws 6 in the circumferential direction of the annular element,
First holding screw 6 extends along the radial direction of the annular element.
In one particular embodiment of the present invention, the annular element of first fixed frame 2 is bolted to connection institute
Link 5 is stated, the through-hole 7 that the digital display dial gauge 4 can be supplied to pass through is provided on the link 5, is arranged on the link 5
There is second holding screw 8 corresponding with the through-hole 7.
The invention also discloses a kind of concrete static(al) compression elasticity modulus test system, including automatic acquisition device, institutes
The digital display dial gauge 4 stated in automatic acquisition device is connected with control system by data line, and the control system is also associated with pressure
Power machine 9.
The invention also discloses a kind of application methods of concrete static(al) compression elasticity modulus test system, including following step
Suddenly：
S1 control system control pressures machine 9 makes it reach multiple payload values of setting according to the rate of loading of setting, and is reaching
When the payload values of setting by the payload values dead load in the range of setting；
S2 automatic acquisition devices after each payload values dead load and when reaching multiple time points of setting automatic collection when each
Between when putting concrete sample 1 two deformation values, and collected two deformation values are transferred to control system；
S3 control systems by every point of time when concrete sample 1 two deformation values subtract each other after obtain difference, and by difference
Obtain ratio after being divided by with the average value of corresponding two deformation values, then ratio is compared with alarming value with judge whether
Alarm.
In one particular embodiment of the present invention, in S2, the time point is respectively 60S and 80S.
In one particular embodiment of the present invention, in S3, the alarming value is 20%, if ratio is more than 20%, control
System alarm processed.
In one particular embodiment of the present invention, further comprising the steps of：
S4 control systems according to the identical rate of loading with S1, payload values and scope control forcing press 9 to concrete sample 1 into
Row multiple-prepressing, each squeeze time are 60S after payload values dead load；
S5 repeats S1 and S2 after the completion of precompressed.
In order to facilitate the above-mentioned technical proposal of the present invention is understood, below by way of specifically used mode to the above-mentioned skill of the present invention
Art scheme is described in detail.
The conventional technical means such as clamping, bonding can be used in the mode of the present invention that is fixedly connected.
Concrete static(al) compression elasticity modulus test automatic acquisition device of the present invention hereinafter referred to as automatic collection fills
It sets, including the first fixed frame 2 and the second fixed frame 3, digital display dial gauge 4, link 5, concrete static(al) of the present invention is pressurized
Elasticity modulus test system（Hereinafter referred to as pilot system）Including automatic acquisition device, forcing press 9 and control system, this implementation
The quantity of digital display dial gauge 4 is two in example, and two digital display dial gauges 4 are symmetrical about the axis of concrete sample 1, digital display
Amesdial 4 is mounted on by the first fixed frame 2 and link 5 on the center line of concrete sample 1（That is two digital display dial gauges 4 with
The axis of concrete sample 1 is generally aligned in the same plane）, the distance between the first fixed frame 2 and the second fixed frame 3 should be 150mm.Number
Aobvious amesdial 4 carries data line, and data line can be connected with control system, and the numerical value so as to which digital display dial gauge 4 is measured transmits
To control system.Control system can receive the numerical value of digital display dial gauge 4 and meanwhile can by setting the step of and the time acquire, can
9 load value of control pressure machine simultaneously can be according to set time by load value dead load in a range（Load value is maintained at one
In specific range）, the ratio between difference and their average values that two deformation values are measured during in can be calculated, if it is greater than
20% sends out alarm and red prompt, can provide progress next step prompt if it is less than 20% and font is flashed.It can be by setting certainly
The rate of loading of dynamic control pressure machine 9, can carry out precompressed repeatedly automatically, the load value of setting can be pressed after the completion of precompressed certainly
The dynamic acquisition for carrying out deformation reading, provides voice prompt after the completion of acquisition, wait for and operating in next step.
Control system divides three steps to carry out concrete static(al) compression elasticity modulus test, and the first step is centering stage, control
System generally comprises initial load value by the rate of loading and multiple load value control pressure machines, multiple load values of input（Benchmark
Stress is the load value of 0.5MPa）With 1/3 payload values（1/3 payload values of 1 axial compressive strength of concrete sample）, and
Two 4 numerical value of digital display dial gauge of automatic collection when 60S and 80S after each payload values dead load, and two were calculated in the same time
The difference of deformation values simultaneously is divided by obtain ratio with their average values, if ratio sends out alarm and red prompt more than 20%, if small
Progress next step prompt can be provided in 20% and font is flashed, and second step is pre-pressing stage, and user can be by first after entering next step
The rate of loading that is inputted in step, initial load value and 1/3 payload values carry out precompressed, after squeeze time is each payload values dead load
60S, and precompressed 2 times repeatedly, third walk after the completion of precompressed, can be by the rate of loading of first step input, initial load value, 1/3
Payload values control pressure machine, and two digital display dial gauges 4 of automatic collection count when 60S and 80S after each payload values dead load
Value, after the completion of numerical value acquisition, removal automatic acquisition device.The rate of loading inputted by the first step after automatic acquisition device removal adds
Lotus to concrete sample 1 destroys, and acquires failing load.
The main points that should be noted when experiment have：4 side lever head of digital display dial gauge with data line will be with the contact of the second fixed frame 3
Well；Rate of loading, initial load value, 1/3 payload values to input correctly.It, be when carrying out 1 failure test of concrete sample
It is carried out again after removal automatic acquisition device.
In conclusion both being subtracted by using the digital display dial gauge with data line by means of the above-mentioned technical proposal of the present invention
Personnel amount is lacked to be convenient for that numerical value is accurately transmitted directly to control system again, while having been analyzed convenient for the calculating of control system；
By control system, the overall process of 2 precompressed can be realized automatically simultaneously convenient for the airborne charge values of control pressure, rate, without artificial
Operation, the acquisition of deformation values is carried out by the load value of setting, can also provide alarm automatically after precompressed；It ensure that load
Value, the stabilization of rate and deformation read accurate and reliable；Personal error can be reduced while reducing personnel amount；Overall structure letter
Single, operability is strong, convenient for obtaining the test result of accurate concrete static(al) compression elasticity modulus test.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of concrete static(al) compression elasticity modulus test automatic acquisition device, which is characterized in that including between the upper and lower every fixation
In concrete sample（1）On the first fixed frame（2）With the second fixed frame（3）, first fixed frame（2）It is solid with described second
Determine frame（3）Between be provided with along the concrete sample（1）Symmetrical two digital display dial gauges of vertical axis（4）, and
Two digital display dial gauges（4）With the concrete sample（1）Vertical axis be respectively positioned in approximately the same plane, the digital display
Amesdial（4）Pass through link（5）With first fixed frame（2）By being fixedly connected, the digital display dial gauge（4）Measuring staff
Head and second fixed frame（3）Contact.
2. concrete static(al) compression elasticity modulus test automatic acquisition device according to claim 1, which is characterized in that institute
State the first fixed frame（2）With second fixed frame（3）Include being sheathed on the concrete sample（1）External annular element,
Several first holding screws are provided in the circumferential direction of the annular element（6）, first holding screw（6）Along the annular
The radial direction of part extends.
3. concrete static(al) compression elasticity modulus test automatic acquisition device according to claim 2, which is characterized in that institute
State the first fixed frame（2）Annular element be bolted to connection the link（5）, the link（5）On be provided with energy
For the digital display dial gauge（4）The through-hole passed through（7）, the link（5）On be provided with and the through-hole（7）Corresponding
Two holding screws（8）.
4. a kind of concrete static(al) compression elasticity modulus test system, which is characterized in that including any one of such as claim 1-3 institutes
The automatic acquisition device stated, the digital display dial gauge in the automatic acquisition device（4）It is connected with control system by data line, institute
It states control system and is also associated with forcing press（9）.
5. a kind of application method of concrete static(al) compression elasticity modulus test system as claimed in claim 4, feature exist
In including the following steps：
S1 control system control pressure machines（9）So that it is reached multiple payload values of setting according to the rate of loading of setting, and up to
To setting payload values when by the payload values dead load in the range of setting；
S2 automatic acquisition devices after each payload values dead load and when reaching multiple time points of setting automatic collection when each
Between put when concrete sample（1）Two deformation values, and collected two deformation values are transferred to control system；
Concrete sample when S3 control systems will at every point of time（1）Two deformation values subtract each other after obtain difference, and will be poor
Value obtains ratio after being divided by with the average value of corresponding two deformation values, then ratio is compared with alarming value is to judge
No alarm.
6. the application method of concrete static(al) compression elasticity modulus test system according to claim 5, described in S2
Time point is respectively 60S and 80S.
7. the application method of solidifying native static(al) compression elasticity modulus test system according to claim 5, which is characterized in that
In S3, the alarming value is 20%, if ratio is more than 20%, control system alarm.
8. the application method of concrete static(al) compression elasticity modulus test system according to claim 5, which is characterized in that
It is further comprising the steps of：
S4 control systems are according to the identical rate of loading with S1, payload values and scope control forcing press（9）To concrete sample
（1）Multiple-prepressing is carried out, each squeeze time is 60S after payload values dead load；
S5 repeats S1 and S2 after the completion of precompressed.
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| CN201810384079.0A CN108426773A (en) | 2018-04-26 | 2018-04-26 | Concrete static(al) compression elasticity modulus test automatic acquisition device, system and method |
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| CN109490090A (en) * | 2018-11-19 | 2019-03-19 | 长安大学 | A kind of rubber material elasticity modulus measuring device and measuring method |
| CN110108557A (en) * | 2019-04-23 | 2019-08-09 | 中铁八局集团第二工程有限公司 | For measuring the device and method of sandbox height Yu sand using amount relationship |
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| CN112747999A (en) * | 2021-01-18 | 2021-05-04 | 深圳市太科检测有限公司 | High-precision concrete static force compression elastic die measuring method and device |
| CN113155614A (en) * | 2021-04-25 | 2021-07-23 | 张启志 | Concrete compressive strength detection method and system based on similarity determination |
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| CN111398038B (en) * | 2020-04-29 | 2021-05-14 | 中铁二十局集团有限公司 | Elastic modulus tester |
| CN112747999A (en) * | 2021-01-18 | 2021-05-04 | 深圳市太科检测有限公司 | High-precision concrete static force compression elastic die measuring method and device |
| CN113155614A (en) * | 2021-04-25 | 2021-07-23 | 张启志 | Concrete compressive strength detection method and system based on similarity determination |
| CN113155614B (en) * | 2021-04-25 | 2023-07-28 | 张启志 | Concrete compressive strength detection method and system based on similarity judgment |
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