CN209342513U - A kind of soil cement unconfined compressive strength test device - Google Patents
A kind of soil cement unconfined compressive strength test device Download PDFInfo
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- CN209342513U CN209342513U CN201822004512.1U CN201822004512U CN209342513U CN 209342513 U CN209342513 U CN 209342513U CN 201822004512 U CN201822004512 U CN 201822004512U CN 209342513 U CN209342513 U CN 209342513U
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- test device
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- soil cement
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- compressive strength
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Abstract
The utility model discloses a kind of soil cement unconfined compressive strength test devices, it is characterized in that the test device includes the pressing mechanism and reaction frame being arranged on pedestal and the pedestal, the pressing mechanism includes the motor of vertically arranged worm and gear and driving the worm and gear lifting, and being horizontally disposed on the worm and gear has chassis；The reaction frame includes the crossbeam for being set to two columns of the column being vertically fixed on the pedestal and horizontal connection of the worm and gear two sides；The below the crossbeam is horizontally disposed a upper chuck, is provided with pressure sensor between the upper chuck and the crossbeam.The utility model has the advantages that: the mode for introducing worm and gear pressurization increases the stability of pressurization, it is ensured that test accuracy；Intensity using the device in addition to that can measure soil cement can also accumulate the elasticity modulus mechanics parameter of different soil soil cement.
Description
Technical field
The utility model relates to the testing equipment fields of geotechnical engineering, and in particular to a kind of soil cement unconfined compressive strength
Test device.
Background technique
Compressive Strength of Soil-cement Mixture refers to soil cement in the resulting failing load of uniaxial compressive test and area ratio.In ground work
In journey basement process and foundation pit enclosure design, Compressive Strength of Soil-cement Mixture value is a very important parameter, determines foundation pit cement
The design of the underground structures such as native impermeabilisation and soil mass of foundation pit stability requires accurate soil cement unconfined compressive strength value.
Existing soil cement unconfined compression strength test generallys use the side of live core pulling and laboratory soil test combination
Formula.Uncertain factor in the preservation and transportational process of cement core sample test specimen causes core sample loss of strength larger, discreteness
It is bigger than normal.In geotechnological Experimental Method in Laboratory, soil cement unconfined compression strength test uses strain controlling formula unconfined compression apparatus
Or omnipotent pressure testing machine.Using it is most be strain controlling formula unconfined compression apparatus, instrument mainly uses axial dynamometer (to answer
Power ring) and axial displacement meter measure stress and deformation, controller is separated with pressurizing device, it has not been convenient to complete nothing at project scene
Confined compression strength test.Have the example strained with force snesor test stress in strength of materials test indoors at present, but
Loading equipemtn and load tonnage are all bigger than normal, are unsatisfactory for the compression test of this special material of soil cement, and be inconvenient to the scene of completing
Test.Existing unconfined compression apparatus can count into elasticity modulus test by axial dynamometer and axial displacement, but logical
It is too low to cross the test efficiency that handwheel is completed plus unloaded.
Summary of the invention
The purpose of this utility model is anti-without lateral confinement according to a kind of soil cement in place of above-mentioned the deficiencies in the prior art, is provided
Compressive Strength test device, the test device include pressing mechanism and reaction frame, and pressing mechanism is pressurizeed using worm and gear,
The ess-strain value of sample in applied voltage test is measured using pressure sensor and examination is calculated in the axial displacement of worm and gear
The displacement of sample is in the high-precision soil cement intensity parameter of sample, then the unloading test that is measured by displacement sensor with further
The elasticity modulus of sample is calculated.
The utility model aim realization is completed by following technical scheme:
A kind of soil cement unconfined compressive strength test device, it is characterised in that the test device includes pedestal and institute
The pressing mechanism and reaction frame being arranged on pedestal are stated, the pressing mechanism includes described in vertically arranged worm and gear and driving
The motor of worm and gear vertical lifting, being horizontally disposed on the worm and gear has chassis；The reaction frame is described including being set to
The crossbeam of two columns of the column being vertically fixed on the pedestal and horizontal connection of worm and gear two sides；The cross
Beam lower horizontal is provided with a upper chuck, is provided with pressure sensor between the upper chuck and the crossbeam.
The chassis upper horizontal is provided with chuck, and the chuck upper surface is provided with two circle sample master scale lines.
Displacement sensor is fixed on the column, the outer edge of the chuck is provided with displacement sensor support, institute
The measurement end of displacement sensors is directed toward institute's displacement sensors support.
The test device further includes a master controller, the master controller respectively with the pressure sensor, institute's rheme
Displacement sensor and motor connection.
The test device further includes a printer, and the printer is connect with the master controller.
It is provided with the base box for wrapping up the pressing mechanism on the pedestal, is provided with display screen and control in the base box
Panel processed, the display screen and the control panel are connect with the master controller respectively.
The utility model has the advantages that: the mode for introducing worm and gear pressurization increases the stability of pressurization, it is ensured that test
Accuracy；Intensity using the device in addition to that can measure soil cement, the springform that can also accumulate different soil soil cement are measured one's own ability
Learn parameter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the test device of sample is placed in the utility model；
Fig. 2 is the structural schematic diagram that the test device of base box is provided in the utility model；
Fig. 3 is the diagrammatic cross-section of test device in the utility model.
Specific embodiment
The feature of the utility model and other correlated characteristics are made further specifically by embodiment below in conjunction with attached drawing
It is bright, in order to the understanding of technical staff of the same trade:
Such as Fig. 1-3, respectively label is respectively as follows: pedestal 1, worm and gear 2, chassis 3, chuck 4, sample 5, column 6, crossbeam in figure
7, upper chuck 8, pressure sensor 9, displacement sensor support 10, displacement sensor 11, display screen 12, printer 13, base box
14, sample master scale line 15.
Embodiment: as shown in Figure 1-3, the present embodiment is specifically related to a kind of soil cement unconfined compressive strength test device,
The test device includes pressing mechanism and reaction frame, and pressing mechanism is pressurizeed using worm and gear 2, utilizes pressure sensor
9 obtain the axial displacement of stress and combination worm and gear 2 of the sample 5 in applied voltage test, to calculate soil cement intensity ginseng
Number, measures axial displacement of the sample 5 in unloading test using displacement sensor 11, to obtain high-precision soil cement elasticity
Modulus.
As shown in Figure 1-3, the soil cement unconfined compressive strength test device in the present embodiment includes the pedestal in rectangle
1, bottom four corners are provided with adjustable screw foot pad, and the height of pedestal 1 can be adjusted, and are then provided with pressuring machine thereon
Structure, pressing mechanism include vertically arranged worm and gear 2 and the worm and gear 2 are driven to do the motor that vertical lifting moves, snail
The top of worm and gear 2 is provided with chassis 3, and chassis 3 may be placed over sample 5, can be applied to examination by motor driven worm and gear 2
The pressure of 5 one axial directions of sample, stable axial compressive force can be transmitted by carrying out transmission using worm and gear 2 in the present embodiment, can be with passing
Dynamic ratio accurately calculates axial displacement, and pumping efficiency is high；A root post 6, column are respectively vertically provided in the two sides of worm and gear 2
6 are bolted to connection on pedestal 1, and being horizontally disposed between two root posts 6 has crossbeam 7, and the both ends of crossbeam 7 are solid by nut
It is scheduled on column 6 and realizes limit, the position corresponded in 2 axial direction of worm and gear below crossbeam 7 is horizontally disposed a upper chuck
8, the position corresponded in 4 axial direction of worm and gear between crossbeam 7 and upper chuck 8 is provided with a pressure sensor 9, column 6, cross
Beam 7 and upper chuck 8 constitute the counter-force mechanism of this test device, when sample 5 touches upper card by the rising of 2 pushing tow of worm and gear
After disk 8, upper chuck 8 can be used for limiting sample 5；And pressure sensor 9 can measure answering for sample 5 during applied voltage test
The soil cement intensity of sample 5 can then be calculated in conjunction with the axial displacement generated in 2 pressure process of worm and gear for stress-strain value
Parameter.
As shown in Figure 1-3, in order to ensure pressure sensor 9 crosses the central axis of sample 5, and then ensure the accurate of measurement result
Degree, on chassis, 3 upper level is provided with chuck 4, and upper surface can fit with the lower surface of upper chuck 8, in the upper table of chuck 4
Face is additionally provided with two circle sample master scale lines 15, and diameter is adapted with the diameter of sample 5, passes through the sample master scale line 15
It is convenient to for sample 5 being placed on chuck 4, and completes its positioning, so that pressure sensor 9 be made accurately to measure the axis of sample 5
To ess-strain value.
As shown in Figure 1-3, being provided with a displacement sensor support 10 close to the outer edge of 6 side of column in chuck 4, and it is somebody's turn to do
Displacement sensor 11 is then fixed on column 6, the measurement end of displacement sensor 11 is directed toward the displacement sensor support 10, works as progress
When applied voltage test, displacement sensor 11 can measure axial displacement when sample 5 pressurizes, and the axial displacement data are for assisting verifying
The axial displacement of worm and gear 2, so that it is guaranteed that the high-precision of test；It, can using displacement sensor 11 when carrying out unloading test
Axial displacement when sample 5 unloads is measured, is the soil cement of different soil so as to which the elasticity modulus of the soil cement is calculated
Richer mechanics parameter is accumulated, is the basement process and construction accumulation relevant rudimentary data of later soil cement；It may be noted that
, since the displacement data of worm and gear 2 has large error during unloading test, therefore using displacement sensor
11 data measured calculate the elasticity modulus of the sample 5, ensure that the accuracy of test data.
As shown in Figure 1-3, the test device in the present embodiment further includes master controller and printer 13, gone back on pedestal 1
It is provided with the base box 14 for covering pressing mechanism, printer 13 etc., worm and gear 2 passes through the base box 14, can prevent from trying
The clast that sample 5 generates during applied voltage test is fallen on pressing mechanism, is damaged for a long time to equipment, in base box 14
On be additionally provided with display screen 12 and control panel, display screen 12, printer 13 and control panel are connected with master controller；Its
In, master controller is connected with displacement sensor 11, pressure sensor 9 and motor, and pressure sensor 9, displacement sensor 11 are surveyed
Real-time data transmission to master controller on, then master controller by these data real-time displays on the display 12, it is convenient
Testing crew is directly observed, and display screen 12 specifically uses liquid crystal window touch screen in the present embodiment；And the starting of motor with stop
Only, for pressurization size and rate etc. by main controller controls, testing crew can input various instructions, master control by control panel
Device processed controls motor execution dependent instruction after receiving instruction, to be automatically performed pressure process, certain control panel can also
To be set as control button etc., it is further simplified operating process；After the completion of the testing experiment of sample 5, what test device measured
Data are transmitted to printer 13 by master controller, are printed by printer 13, and printer 13 is specific in the present embodiment
Using thermal printer, the peak strength of the soil cement intensity parameter of the sample 5 measured suitable for printing equipment.In the present embodiment
Test device can also be connected with existing Testing Software, realized at full automatic working and data acquisition using master controller
The functions such as reason.
As shown in Figure 1-3, the application method of the soil cement unconfined compressive strength test device in the present embodiment include with
Lower step: sample 5 to be tested is placed on chuck 4, using the sample master scale line 15 of 4 upper surface of chuck to sample 5
Position be adjusted, it is ensured that pressure sensor 9 cross sample 5 central axis；Start to be surveyed by control panel output order
Examination, master controller receive instruction control electric motor starting to jack sample 5 by worm and gear 2；Utilize pressure sensing
The water of sample 5 can be calculated in conjunction with the axial displacement of worm and gear 2 in the ess-strain value of sample 5 when device 9 can measure pressurization
Soil intensive parameter, while displacement when pressurization is measured using displacement sensor to assist verifying its accuracy；Then it controls
Worm and gear 2 is unloaded, and is displaced using the unloading that displacement sensor 11 measures sample 5, is obtained sample 5 to accurately calculate
Elasticity modulus；Display screen 12 is displayed on by the data measured, and strong using the soil cement that printer 13 obtains test
The peak strength of degree parameter prints；It repeats the above steps and completes the test experiments of subsequent sample 5.
The beneficial effect of the present embodiment is: (1) mode for introducing worm and gear pressurization increases the stability of pressurization, realizes
The Automatic Control of ess-strain, it is ensured that test accuracy；(2) intensity using the device in addition to that can measure soil cement, may be used also
It is that the basement process of later soil cement is related to construction accumulation to accumulate the elasticity modulus mechanics parameter of different soil soil cement
Basic data；(3) it can be connect with existing Testing Software, realize the functions such as full automatic working and test data collection processing.
Claims (6)
1. a kind of soil cement unconfined compressive strength test device, it is characterised in that the test device includes pedestal and described
The pressing mechanism and reaction frame being arranged on pedestal, the pressing mechanism include vertically arranged worm and gear and the driving snail
The motor of worm and gear vertical lifting, being horizontally disposed on the worm and gear has chassis；The reaction frame includes being set to the snail
The crossbeam of two columns of the column being vertically fixed on the pedestal and horizontal connection of worm and gear two sides；The crossbeam
Lower horizontal is provided with a upper chuck, is provided with pressure sensor between the upper chuck and the crossbeam.
2. a kind of soil cement unconfined compressive strength test device according to claim 1, it is characterised in that the chassis
Upper horizontal is provided with chuck, and the chuck upper surface is provided with two circle sample master scale lines.
3. a kind of soil cement unconfined compressive strength test device according to claim 2, it is characterised in that the column
On be fixed with displacement sensor, the outer edge of the chuck is provided with displacement sensor support, the survey of institute's displacement sensors
It measures end and is directed toward institute's displacement sensors support.
4. a kind of soil cement unconfined compressive strength test device according to claim 3, it is characterised in that the test
Device further includes a master controller, the master controller respectively with the pressure sensor, institute's displacement sensors and described
Motor connection.
5. a kind of soil cement unconfined compressive strength test device according to claim 4, it is characterised in that the test
Device further includes a printer, and the printer is connect with the master controller.
6. a kind of soil cement unconfined compressive strength test device according to claim 4, it is characterised in that the pedestal
On be provided with the base box for wrapping up the pressing mechanism, display screen and control panel, the display are provided in the base box
Screen and the control panel are connect with the master controller respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822004512.1U CN209342513U (en) | 2018-12-02 | 2018-12-02 | A kind of soil cement unconfined compressive strength test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822004512.1U CN209342513U (en) | 2018-12-02 | 2018-12-02 | A kind of soil cement unconfined compressive strength test device |
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| CN209342513U true CN209342513U (en) | 2019-09-03 |
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| CN201822004512.1U Active CN209342513U (en) | 2018-12-02 | 2018-12-02 | A kind of soil cement unconfined compressive strength test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781046A (en) * | 2020-08-11 | 2020-10-16 | 辽宁科技大学 | Complete test device and test method for detecting mechanical properties of tamping briquette |
| CN113607465A (en) * | 2021-07-23 | 2021-11-05 | 北京科技大学 | Method for rapidly detecting strength of filling body of stope on site |
| CN114323967A (en) * | 2020-10-12 | 2022-04-12 | 中国石油天然气股份有限公司 | Cement stone mechanical parameter measuring system and measuring method |
| CN117871267A (en) * | 2024-03-12 | 2024-04-12 | 西南交通大学 | Consolidation apparatus and implementation method for non-confined condition |
-
2018
- 2018-12-02 CN CN201822004512.1U patent/CN209342513U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781046A (en) * | 2020-08-11 | 2020-10-16 | 辽宁科技大学 | Complete test device and test method for detecting mechanical properties of tamping briquette |
| CN111781046B (en) * | 2020-08-11 | 2023-03-07 | 辽宁科技大学 | Complete test device and test method for mechanical property detection of tamping briquette |
| CN114323967A (en) * | 2020-10-12 | 2022-04-12 | 中国石油天然气股份有限公司 | Cement stone mechanical parameter measuring system and measuring method |
| CN113607465A (en) * | 2021-07-23 | 2021-11-05 | 北京科技大学 | Method for rapidly detecting strength of filling body of stope on site |
| CN113607465B (en) * | 2021-07-23 | 2023-04-28 | 北京科技大学 | On-site rapid detection method for strength of stope filling body |
| CN117871267A (en) * | 2024-03-12 | 2024-04-12 | 西南交通大学 | Consolidation apparatus and implementation method for non-confined condition |
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