CN207163824U - A kind of test device of effective static lateral pressure coefficient of ess-strain formula - Google Patents
A kind of test device of effective static lateral pressure coefficient of ess-strain formula Download PDFInfo
- Publication number
- CN207163824U CN207163824U CN201721300447.6U CN201721300447U CN207163824U CN 207163824 U CN207163824 U CN 207163824U CN 201721300447 U CN201721300447 U CN 201721300447U CN 207163824 U CN207163824 U CN 207163824U
- Authority
- CN
- China
- Prior art keywords
- chuck
- container
- ledge
- worm
- lateral pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model belongs to a kind of test device of effective static lateral pressure coefficient of ess-strain formula in the test equipment field of underground engineering.Its pressue device is longitudinally disposed worm and gear and motor control assembly, and a chassis is fixed at the top of worm and gear；Worm and gear is connected with motor control assembly；Chuck is placed on the top on chassis, ledge is provided with the centre of chuck surface, is provided with groove in ledge, container is caught in chuck, rotary chuck, ledge is set to be in close contact with container, container is arranged with sealing ring sealing with ledge tight contact portions, and osculum is set in inside grooves, drainpipe is set in chuck, one end of drainpipe is connected with osculum, and the other end passes chuck, and is connected with pore water pressure sensor.It solves air pressure pressurization instability problem, realizes that strain-type static lateral pressure coefficient is tested.Pore water pressure sensor is installed additional, to measure the pore water pressure during experiment.
Description
Technical field
The utility model belongs to Geotechnical Engineering soil test field, more particularly to a kind of test equipment of underground engineering.
Background technology
In engineering investigation design, soil static lateral pressure coefficient K0 values be one of underground geotechnical engineering design substantially and
Very important parameter, determine stress state in horizontal field, calculate static lateral pressure and Poisson's ratio, stake side-friction force,
The design of the underground structures such as pipeline is filled in underground chamber abutment wall, tunnel-liner and soil and is required for accurate static lateral pressure system
Number.
In geotechnological room test method, the experiment of static lateral pressure coefficient static lateral pressure coefficient mainly has consolidation apparatus method, three
3 kinds of methods of axle instrument method and rest side pressure meter method.And because consolidation apparatus method test error is larger, triaxial apparatus method operating procedure is numerous
It is trivial, therefore using less in producing.Using it is most be static lateral pressure coefficient consolidometer, at present by air pressure and static side pressure
The trial that power instrument combines, but do not apply in practice also.The problems such as technical scheme can solve the problem that automatic loading, but due to being gas
Press pressue device, it may appear that the unstable situation of air pressure so that data fluctuate larger in gatherer process；Existing K0 consolidation apparatus is
Stress-type, typically chooses four point-rendering Trendline during experiment, precision is relatively low；Existing K0 consolidation apparatus all have ignored hole
Water pressure dissipates influence to K0 coefficients, and the K0 coefficients for causing to measure are actual deviation.Existing K0 consolidation apparatus dismounting is extremely
Inconvenience, latex film is thicker in container, influences test accuracy.
Immediate in the prior art with the utility model, consolidation apparatus typically mainly includes the base with counterforce device,
Container is located at the top of base or is directly installed on base, and axial device for measuring force is fixed on counterforce device, and is suspended on
The top of container center, lateral device for measuring force are fixed on container side wall, and the bottom or inside of base are provided with pressue device, pressurize
Container described in device energy lifting.Concrete operations are that soil sample is put into container, and pressue device pressurization lifting container to axial dynamometry fills
Put, soil sample is compressed under the reaction force of counterforce device, pass through axial device for measuring force and lateral device for measuring force pair respectively
Axial stress and lateral stress are detected, and static lateral pressure coefficient K0 is calculated.Shortcoming is can only to carry out stress or strain
Detection, the data of stress and strain can not be obtained simultaneously.The pore water pressure dissipation in soil sample is not accounted for testing result
Influence, so as to can not obtain meeting actual static lateral pressure coefficient K0.
Utility model content
The utility model provides a kind of test device of effective static lateral pressure coefficient of ess-strain formula, and it is used certainly
Dynamic mechanical loading, on the one hand solve air pressure pressurization instability problem, the static lateral pressure system of strain-type on the other hand can be achieved
Number experiment；Pore water pressure sensor is installed in instrument additional, to measure the pore water pressure during experiment；Between base and container
Using the connection of chuck mode, the design of lower porous disc is embedded in chuck ledge, the mill loaded and unloaded repeatedly to container can be reduced
Damage.
Basic technical scheme is：A kind of test device of effective static lateral pressure coefficient of ess-strain formula, is mainly included
Base with counterforce device, container are located at the top of base, and axial device for measuring force is fixed on counterforce device, and is suspended on appearance
The top at device center, base are provided with pressue device, pressue device energy lifting container to axial device for measuring force；Pressue device is vertical
To worm and gear and motor control assembly is set, a chassis is fixed at the top of worm and gear；Worm and gear fills with motor control
Put connection；Chuck is placed on the top on chassis, and ledge is provided with the centre of chuck surface, groove is provided with ledge,
Container is caught in chuck, rotary chuck, ledge is in close contact with container, and container sets up separately with ledge tight contact portions
There is sealing ring sealing, osculum is set in inside grooves, drainpipe is set in chuck, one end and the osculum of drainpipe connect
Connect, the other end passes chuck, and is connected with pore water pressure sensor.
Based on above-mentioned technical characteristic, optimize as one kind, lower porous disc is embedded and covers the bottom of ledge, can reduce
The abrasion to container is loaded and unloaded repeatedly.
Test device of the present utility model can unrestricted choice strain-type or the full-automatic static lateral pressure system of stress-type progress
Number experiment, and can be selected to survey static lateral pressure coefficient according to actual conditions or survey effective static lateral pressure coefficient.
Compared with existing static lateral pressure coefficient consolidometer, the main distinction is the application：
1. existing static lateral pressure coefficient consolidometer is mostly stress-type, and loading is mostly artificial loading, only a few
Pressurizeed for air pressure, in this technology, full-automatic pressurization realized using worm gearing, that is, significantly reduces manual labor,
And the situation that pressure instability and tracheae aging in pneumatic shuttle cause gas leakage is avoided, not only can be with using the pressuring method
Conventional stress-type static lateral pressure coefficient experiment is done, can also be according to actual requirement of engineering, by worm gearing
Control, realize the static lateral pressure coefficient experiment of strain-type, result of the test is more accurate.
2. existing static lateral pressure coefficient consolidometer can not detect to sample bottom pore water pressure.This technology
In, base and container junction are subjected to closed processes, the water that sample bottom is discharged is fully incorporated in base drain aperture, with
The draining pipe end mounting hole gap water pressure sensor of osculum connection, to measure sample bottom during static lateral pressure coefficient experiment
The pore water pressure in portion, so as to calculate effective static lateral pressure coefficient of sample.
3. existing static lateral pressure coefficient consolidometer base leads to together with being usually screwed with container when moving back soil
Chang Weiyong knives dig out sample from container, and operation is extremely inconvenient, and lower porous disc directly contacts container side wall, to prevent container
Damage, thicker latex film can be set in usual container, influence test accuracy.In present techniques, between base and container
Using the connection of chuck mode, rotating chuck, you can container is removed from base, conveniently moves back soil；Lower porous disc is designed and is embedded in
The ledge of chuck, damage of the movement of porous disc during testing to container can be reduced, reduces test error.
The beneficial effects of the utility model are：
1. influenceed in view of the soil body in Practical Project by pore water pressure, by setting pore water pressure in instrument bottom
Force snesor, the pore water pressure during experiment is detected and calculated so that result of the test more taps into reality.
2. being different from the unstable of air pressure pressurization, the pressuring method for introducing worm and gear increases stressed stability, and then
Ess-strain control is realized, full automatic pressurized control can also mitigate the physical labor intensity of people.
3. in order to improve production efficiency, carried out to moving back the unhandy place of the link such as soil and instrument dismounting during experiment
Transformation.
4. in order to reduce the abrasion of container, design lower porous disc and be embedded in the ledge of chuck.The utility model is full
In the conventional static lateral pressure coefficient experimental basis of foot, both easy to operate, mitigation manual labor, the inspection of higher condition can be met again
Survey the test requirements document of effective stress.
, can be by pore water pressure dissipation during experiment due to the design of above-mentioned static lateral pressure coefficient test device
The influence factor of static lateral pressure coefficient is taken into account so that for result of the test closer to reality, the test model of strain-type can
Meet the test requirements document required for different designs, the design of chassis and lower porous disc then more to facilitate in practical operation, carried
High efficiency, reduce manual labor.
The utility model can be connected with existing Testing Software, realize the functions such as full automatic working and data acquisition process.
Brief description of the drawings
Application examples of the present utility model is explained below in conjunction with the accompanying drawings.
Fig. 1 is schematic perspective view of the present utility model.
Fig. 2 is the position view on chassis in the utility model.
Fig. 3 is the profile of chuck of the present utility model.
Embodiment
As shown in figure 1, a kind of test device of effective static lateral pressure coefficient of ess-strain formula, main to include with anti-
The base 1 of power apparatus 2, container 3 are located at the top of the base 1, and axial device for measuring force 4 is fixed on counterforce device 2, and is hung
On the top at the center of container 3, base 1 is provided with pressue device 5, the energy lifting of pressue device 5 container 3 to axial device for measuring force 4；
Pressue device 5 is longitudinally disposed worm and gear 6 and motor control assembly 8, and a chassis 7, chassis are fixed in the top of worm and gear 6
7 position signal can be found in Fig. 2；Worm and gear 6 is connected with motor control assembly 8；Chuck 9 is placed on the top on chassis 7, holds
Device 3 is caught in chuck 9.
As shown in Figure 3：The centre of chuck surface is provided with ledge 11, and rotary chuck makes ledge 11 and container 3 tight
Contiguity is touched, i.e., container 3 is caught in teat point 11 from top to bottom, and container is arranged with sealing ring with the tight contact portions of ledge 11
Sealing；Groove 12 is provided with ledge 11, osculum 13 is set inside groove 12, drainpipe 10 is set in chuck 9,
One end of drainpipe 10 is connected with osculum 13, and the other end passes chuck, and is connected with pore water pressure sensor 14.Can be prominent
Set porous disc 15 in the bottom gone out in part 11.The shape of chuck in figure, the drainage path etc. of drainpipe are only a kind of signal.
Because Fig. 1 expression limits, Fig. 2 is the supplement to Fig. 1, it is shown that the position on chassis 7.Meanwhile as shown in Fig. 2
Base box 16 can be made in the outside of base, turbine and worm, motor control assembly and base be wrapped, the top of turbine and worm
Through base box 16, the upper end of turbine and worm sets chassis 7.Display window or control button etc. can be set in base box 16, shown
Show that the data connection of window and control button and motor control assembly belongs to prior art, it is complete using any existing mature technology
Into not in the scope of protection of the utility model.
The utility model embodiment is discussed in detail above, for those of ordinary skill in the art, according to this reality
The thought of example is applied, in specific embodiments and applications there will be changes.To sum up, this specification content should not be understood
For to limitation of the present utility model, all any changes made according to the utility model design philosophy are all in protection of the present utility model
Within the scope of.
Claims (2)
1. a kind of test device of effective static lateral pressure coefficient of ess-strain formula, main to include with counterforce device (2)
Base (1), container (3) are located at the top of the base (1), and axial device for measuring force (4) is fixed on the counterforce device (2),
And the top at the container (3) center is suspended on, the base (1) is provided with pressue device (5), the pressue device (5)
Can the extremely axial device for measuring force (4) of container (3) described in lifting；It is characterized in that：The pressue device (5) is longitudinally disposed snail
Worm and gear (6) and motor control assembly (8), a chassis (7) is fixed at the top of the worm and gear (6)；The worm and gear
(6) it is connected with the motor control assembly (8)；Chuck (9) is placed on the top of the chassis (7), on the chuck (9) surface
Centre be provided with ledge (11), is provided with groove (12) in the ledge (11), the container (3) is caught in the chuck
(9) in, the chuck (9) is rotated, the ledge (11) is in close contact with the container (3), the container (3) and institute
State ledge (11) tight contact portions and be arranged with sealing ring sealing, osculum (13) is set inside the groove (12),
Drainpipe (10) is set in the chuck (9), and one end of the drainpipe (10) is connected with the osculum (13), and the other end is worn
Go out the chuck (9), and be connected with pore water pressure sensor (14).
2. a kind of test device of effective static lateral pressure coefficient of ess-strain formula according to claim 1, its feature
It is that lower porous disc (15) is embedded and covers the bottom of the ledge (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721300447.6U CN207163824U (en) | 2017-09-22 | 2017-09-22 | A kind of test device of effective static lateral pressure coefficient of ess-strain formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721300447.6U CN207163824U (en) | 2017-09-22 | 2017-09-22 | A kind of test device of effective static lateral pressure coefficient of ess-strain formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207163824U true CN207163824U (en) | 2018-03-30 |
Family
ID=61724679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721300447.6U Active CN207163824U (en) | 2017-09-22 | 2017-09-22 | A kind of test device of effective static lateral pressure coefficient of ess-strain formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207163824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505201A (en) * | 2017-09-22 | 2017-12-22 | 上海申元岩土工程有限公司 | A kind of test device of effective static lateral pressure coefficient of ess-strain formula |
-
2017
- 2017-09-22 CN CN201721300447.6U patent/CN207163824U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505201A (en) * | 2017-09-22 | 2017-12-22 | 上海申元岩土工程有限公司 | A kind of test device of effective static lateral pressure coefficient of ess-strain formula |
| CN107505201B (en) * | 2017-09-22 | 2024-04-09 | 上海申元岩土工程有限公司 | Device for testing effective static side pressure coefficient of stress strain type |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106771088B (en) | A kind of soil consolidation detector and detection method using counterweight and air pressure combination loading | |
| CN102494981B (en) | Device for testing gas seepage and creepage coupling action of rocks | |
| CN103868799B (en) | Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum | |
| CN111122337B (en) | Segment soil pressure model test device and method considering shield tail wall post-grouting influence | |
| CN201241707Y (en) | Tunnel upward floating model trial apparatus | |
| CN105043960B (en) | A kind of modified soil body joint consolidation permeameter | |
| CN105738220B (en) | Consider the section of jurisdiction elastic sealing gasket waterproof test method that the soil body influences | |
| CN208140705U (en) | It is a kind of can automatic collection pore pressure permeability consolidometer | |
| CN103698228B (en) | A kind of large-scale real triaxial shearing test device and application thereof | |
| CN109870364A (en) | Stress-seepage coupling acts on the experimental rig and method of lower Rock And Soil | |
| CN104020092B (en) | One kind consolidation pore water pressure combined test device and method | |
| CN104020047A (en) | Solidification and permeation combined testing device and method | |
| CN111366468B (en) | Side pressure electrical measurement test system and test method | |
| CN107991170A (en) | Measure triaxial tests instrument balancing gate pit and its operating method of rock sample bulk strain | |
| CN107703031B (en) | A kind of air pressure driving loose media grouting simulation test device and test method | |
| CN204924802U (en) | Simple and easy consolidation test device that clay layer warp is sent to indoor simulation extraction pressure -bearing water | |
| CN207163824U (en) | A kind of test device of effective static lateral pressure coefficient of ess-strain formula | |
| CN103308394B (en) | Static lateral pressure coefficient determinator and method | |
| CN206459930U (en) | One kind infiltration gas pressure consolidation instrument | |
| CN110487988A (en) | A kind of air pressure-loading type one-dimensional consolidation infiltration joint test device | |
| CN109765109A (en) | Soft Soil Layer pile foundation quasi-Pascal effect experimental rig | |
| CN106769772A (en) | The device and its monitoring method of real-time monitoring dry ground consolidation process | |
| CN107505201A (en) | A kind of test device of effective static lateral pressure coefficient of ess-strain formula | |
| CN207964443U (en) | Measure the triaxial tests instrument balancing gate pit of rock sample bulk strain | |
| CN208672223U (en) | A kind of binary channels SERVO CONTROL dynamic pore pressure marking apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |