CN208109585U - Concrete static(al) compression elasticity modulus test automatic acquisition device and system - Google Patents
Concrete static(al) compression elasticity modulus test automatic acquisition device and system Download PDFInfo
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- CN208109585U CN208109585U CN201820606449.6U CN201820606449U CN208109585U CN 208109585 U CN208109585 U CN 208109585U CN 201820606449 U CN201820606449 U CN 201820606449U CN 208109585 U CN208109585 U CN 208109585U
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Abstract
The utility model discloses a kind of concrete static(al) compression elasticity modulus test automatic acquisition device and systems, automatic acquisition device includes between the upper and lower every the first fixed frame and the second fixed frame being fixed on concrete sample, two digital display dial gauges symmetrical along the vertical axis of concrete sample are provided between first fixed frame and the second fixed frame, 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 connection frame 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 control press machine load value, rate, without human intervention.
Description
Technical field
The utility model relates to concrete static(al) compression elasticity modulus test technical fields, it particularly relates to a kind of mixed
Solidifying soil static(al) compression elasticity modulus test automatic acquisition device and system.
Background technique
When measuring modulus of elasticity of concrete, deformeter should be mounted on the middle line of concrete sample two sides simultaneously symmetrical
In the both ends of concrete sample, the gauge length of Light deformation measurement fixed frame should be 150mm.The measurement accuracy of Light deformation measuring instrument must not
Lower than 0.001mm.
Position of the concrete sample on press machine should be carefully adjusted, is directed at its axle center 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.
The initial load value FO that loading is 0.5MPa to benchmark stress keeps in dead load 60S and 30S afterwards record often
The deformation of measuring point reads ε 0, should continuously and uniformly loading is axial compressive strength fcp to stress immediately 1/3 payload values Fa,
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 greater than 20%, Ying Chong
Above-mentioned test procedure is repeated after new centering concrete sample.If its diminishing can not be made to lower than 20%, nothing is this time tested
Effect.
When meeting the ratio between difference and their average values of deformation values in confirming concrete sample pair and being not more than 20%, 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, the reading of amesdial goes to read by people completely, force value and loading the most commonly used is common amesdial in test
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, operator is more when test, centering, the complete manual operation of pre-compaction process.It is difficult accurately to control force value and loading speed
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.
Utility model content
For above-mentioned technical problem in the related technology, the utility model proposes a kind of concrete static(al) compression elasticity modulus
Test automatic acquisition device and system, it is ensured that concrete static(al) compression springform also can be accurately detected in the case where a people
Amount.
To realize the above-mentioned technical purpose, the technical solution of the utility model is realized in：
A kind of concrete static(al) compression elasticity modulus test automatic acquisition device, including between the upper and lower every be fixed on concrete examination
The first fixed frame and the second fixed frame on part are provided with along described mixed between first fixed frame and second fixed frame
Two symmetrical digital display dial gauges of the vertical axis of solidifying soil test specimen, and two digital display dial gauges and the concrete try
The vertical axis of part is respectively positioned in approximately the same plane, and the digital display dial gauge is passed through solid by connection frame and first fixed frame
Fixed connection, the measuring staff head of the digital display dial gauge are 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 connection frame, the connection frame
On be provided with the through-hole that can be passed through for the digital display dial gauge, be provided with corresponding with the through-hole second on the connection frame
Holding screw.
The invention also discloses a kind of concrete static(al) compression elasticity modulus test systems, including automatic collection to fill
It sets, the digital display dial gauge in the automatic acquisition device is connected with control system by data line, and the control system is also connected with
There is press machine.
The invention also discloses a kind of application methods of concrete static(al) compression elasticity modulus test system, including with
Lower step：
S1 control system control press machine makes it reach multiple payload values of setting according to the rate of loading of setting, and is reaching
To setting payload values when by the payload values dead load in the range of setting；
S2 automatic acquisition device after each payload values dead load and when reaching multiple time points of setting automatic collection every
Two deformation values of concrete sample when a time point, and collected two deformation values are transferred to control system；
S3 control system by every point of time when concrete sample 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.
Further, in S2, the time point is respectively 60S and 80S.
Further, in S3, the alarming value is 20%, if ratio is greater than 20%, control system alarm.
Further, further comprising the steps of：
S4 control system according to rate of loading identical in S1, payload values and scope control press machine to concrete sample
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.
The beneficial effects of the utility model：By using the digital display dial gauge with data line, not only reduced personnel amount but also
Convenient for numerical value is accurately transmitted directly to control system, while being analyzed convenient for the calculating of control system；By control system, just
The overall process of 2 precompressed can be realized automatically simultaneously in control press machine load value, rate, without human intervention, after precompressed
Carry out the acquisition of deformation values automatically by the load value of setting；It ensure that load value, the stabilization of rate and the accurate of deformation reading can
It leans on；Personal error can be reduced while reducing personnel amount；Overall structure is simple, strong operability, convenient for obtaining accurate coagulation
The test result of native static(al) compression elasticity modulus test.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the concrete static(al) compression elasticity modulus test automatic acquisition device according to the utility model embodiment
Schematic diagram；
Fig. 2 is the schematic diagram of the first fixed frame according to the utility model embodiment；
Fig. 3 is the front view of the connection frame according to the utility model embodiment；
Fig. 4 is the side view of the connection frame according to the utility model embodiment；
Fig. 5 is the top view of the connection frame according to the utility model embodiment；
Fig. 6 is the signal of the concrete static(al) compression elasticity modulus test system according to the utility model embodiment
Figure.
In figure：
1, concrete sample；2, the first fixed frame；3, the second fixed frame；4, digital display dial gauge；5, connection frame；6, first is tight
Determine screw；7, through-hole；8, the second holding screw；9, press machine.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art's every other embodiment obtained, all belongs to
In the range of the utility model protection.
As shown in figures 1 to 6, a kind of concrete static(al) compression elasticity modulus test according to the utility model embodiment
Automatic acquisition device, including between the upper and lower every the first fixed frame 2 and the second fixed frame 3 being fixed on concrete sample 1, described
Symmetrical two of vertical axis along the concrete sample 1 are provided between one fixed frame 2 and second fixed frame 3
Digital display dial gauge 4, and the vertical axis of two digital display dial gauges 4 and the concrete sample 1 is respectively positioned on approximately the same plane
On, the digital display dial gauge 4, which is passed through by connection frame 5 with first fixed frame 2, to be fixedly connected, the digital display dial gauge 4
Measuring staff head is contacted with second fixed frame 3.
In a specific embodiment of the utility model, first fixed frame 2 and second fixed frame 3 include
The annular element being sheathed on outside the concrete sample 1 is provided with several first clamp screws in the circumferential direction of the annular element
Nail 6, first holding screw 6 extend along the radial direction of the annular element.
In a specific embodiment of the utility model, the annular element of first fixed frame 2 is bolted company
The connection frame 5 is connect, is provided with the through-hole 7 that can be passed through for the digital display dial gauge 4 on the connection frame 5, on the connection frame 5
It is provided with second holding screw 8 corresponding with the through-hole 7.
The invention also discloses a kind of concrete static(al) compression elasticity modulus test systems, including automatic collection to fill
It sets, the digital display dial gauge 4 in the automatic acquisition device is connected with control system by data line, and the control system is also connected with
There is press machine 9.
The invention also discloses a kind of application methods of concrete static(al) compression elasticity modulus test system, including with
Lower step：
S1 control system control press machine 9 makes it reach multiple payload values of setting according to the rate of loading of setting, and
When reaching the payload values of setting by the payload values dead load in the range of setting；
S2 automatic acquisition device after each payload values dead load and when reaching multiple time points of setting automatic collection every
Two deformation values of concrete sample 1 when a time point, and collected two deformation values are transferred to control system；
S3 control system by every point of time when concrete sample 1 two deformation values subtract each other after obtain difference, and will
Difference obtains ratio after being divided by with the average value of corresponding two deformation values, then ratio is compared with alarming value to judge
Whether alarm.
In a specific embodiment of the utility model, in S2, the time point is respectively 60S and 80S.
In a specific embodiment of the utility model, in S3, the alarming value is 20%, if ratio is greater than
20%, control system alarm.
It is further comprising the steps of in a specific embodiment of the utility model：
S4 control system tries concrete according to rate of loading identical in S1, payload values and scope control press machine 9
Part 1 carries out multiple-prepressing, and each squeeze time is 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 for understanding the utility model, below by way of specifically used mode to the utility model
Above-mentioned technical proposal be described in detail.
The conventional technical means such as clamping, bonding can be used in the mode described in the utility model that is fixedly connected.
Concrete static(al) compression elasticity modulus test automatic acquisition device described in the utility model is hereinafter referred to as adopted automatically
Acquisition means, including the first fixed frame 2 and the second fixed frame 3, digital display dial gauge 4, connection frame 5, concrete described in the utility model
Static(al) compression elasticity modulus test system（Hereinafter referred to as pilot system）Including automatic acquisition device, press machine 9 and control system
It unites, the quantity of digital display dial gauge 4 is two in the present embodiment, and two digital display dial gauges 4 are mutual about the axis of concrete sample 1
Symmetrically, digital display dial gauge 4 is mounted on the middle line of concrete sample 1 by the first fixed frame 2 and connection frame 5（That is two digital displays
Amesdial 4 and the axis of concrete sample 1 are generally aligned in the same plane）, the distance between the first fixed frame 2 and the second fixed frame 3 are answered
For 150mm.Digital display dial gauge 4 has data line, and data line can be connected with control system, so as to which digital display dial gauge 4 is measured
Numerical value be transmitted to control system.The step of control system can receive the numerical value of digital display dial gauge 4 while can be by setting is timely
Between acquire, 9 load value of press machine can be controlled and can be according to set time by load value dead load in a range（I.e. by load value
It is maintained in a specific range）, can calculate the difference that two deformation values are measured during in and their average values it
Than that can provide progress next step prompt if it is less than 20% and font is flashed if it is greater than 20% sending alarm and red prompt.Energy
Enough rate of loading by setting automatic pressure control machine 9, can carry out precompressed repeatedly automatically, can be after the completion of precompressed by setting
Load value carry out the acquisition of deformation reading automatically, provide voice prompt after the completion of acquisition, wait 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 controls press machine by the rate of loading of input and multiple load values, and multiple load values generally comprise initial load value（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, which is greater than 20%, issues alarm and red prompt, 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 inputs 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 step can press rate of loading, the initial load value, 1/3 of the first step input after the completion of precompressed
Payload values control press machine, and two digital display dial gauges 4 of automatic collection number when 60S and 80S after each payload values dead load
Value, after the completion of numerical value acquisition, removal automatic acquisition device.Add after automatic acquisition device removal by the rate of loading that the first step inputs
Lotus to concrete sample 1 destroys, and acquires failing load.
The main points that should be noted when test 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 by means of the above-mentioned technical proposal of the utility model, by using the digital display dial gauge with data line,
Not only personnel amount had been reduced but also had been convenient for that numerical value is accurately transmitted directly to control system, while convenient for the calculating of control system point
Analysis；By control system, it can realize the overall process of 2 precompressed automatically simultaneously convenient for control press machine load value, rate, be not necessarily to people
Work operation, is carried out the acquisition of deformation values automatically by the load value of setting, can also provide warning note after precompressed；It ensure that load
Charge values, the stabilization of rate and deformation read accurate and reliable；Personal error can be reduced while reducing personnel amount；Overall structure letter
It is single, strong operability, convenient for obtaining the test result of accurate concrete static(al) compression elasticity modulus test.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (4)
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 connection frame（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）It 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 connection frame（5）, the connection frame（5）On be provided with energy
For the digital display dial gauge（4）The through-hole passed through（7）, the connection frame（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 institute
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 connected with press machine（9）.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426773A (en) * | 2018-04-26 | 2018-08-21 | 中铁十六局集团第二工程有限公司 | Concrete static(al) compression elasticity modulus test automatic acquisition device, system and method |
| CN110763558A (en) * | 2019-11-01 | 2020-02-07 | 苏州科联建设工程质量检测有限公司 | Elastic modulus measuring method and measuring instrument |
| CN111579362A (en) * | 2019-02-19 | 2020-08-25 | 中铁建设集团建筑发展有限公司 | Reactive powder concrete deflection detection device and use method |
-
2018
- 2018-04-26 CN CN201820606449.6U patent/CN208109585U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426773A (en) * | 2018-04-26 | 2018-08-21 | 中铁十六局集团第二工程有限公司 | Concrete static(al) compression elasticity modulus test automatic acquisition device, system and method |
| CN111579362A (en) * | 2019-02-19 | 2020-08-25 | 中铁建设集团建筑发展有限公司 | Reactive powder concrete deflection detection device and use method |
| CN110763558A (en) * | 2019-11-01 | 2020-02-07 | 苏州科联建设工程质量检测有限公司 | Elastic modulus measuring method and measuring instrument |
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