CN106198376A - Measure the consolidation apparatus of pore pressure - Google Patents
Measure the consolidation apparatus of pore pressure Download PDFInfo
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- CN106198376A CN106198376A CN201610627620.7A CN201610627620A CN106198376A CN 106198376 A CN106198376 A CN 106198376A CN 201610627620 A CN201610627620 A CN 201610627620A CN 106198376 A CN106198376 A CN 106198376A
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- soil sample
- pressure
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- placing
- consolidation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a kind of consolidation apparatus measuring pore pressure, including: soil sample apparatus for placing, it is filled with soil sample to be detected in described soil sample apparatus for placing, soil sample same plane is provided with multiple described soil pressure cell, the same vertical direction of soil sample is provided with multiple soil pressure cell；Pressure head, its corresponding described soil sample apparatus for placing is arranged, for described soil sample is applied pressure；Displacement transducer, it is located on described pressure head, for measuring the deflection of soil sample；And Measurement and Control System, itself and described soil pressure cell, described elevating mechanism and institute's displacement sensors data cube computation.The present invention measures the consolidation apparatus of pore pressure, automatically gives and is pressurizeed by corresponding Measurement and Control System program setting, it is possible to is greatly improved work efficiency.Can complete multistage loadings pressure, sedimentation deformation gathers data by displacement transducer can reduce error.
Description
Technical field
The present invention relates to consolidation apparatus instrument field, particularly to a kind of consolidation apparatus measuring pore pressure.
Background technology
Consolidation, refers to that soil body pore water pressure under load action reduces, and effective stress increase and the soil body constantly compress
Process, during this, the soil body can produce compression, and in Brainage boundary draining.The problem considering consolidation draining, to building
If engineering has great importance.
Consolidation research test apparatus varied, consolidation apparatus can measure soil sedimentation, and thus calculate a series of and
The parameter that native character is relevant, such as cake compressibility, the coefficient of consolidation etc..Additionally, existing conventional consolidation apparatus, owing to grinding
The soil sample volume studied carefully is the least, it is impossible to the problem considering soil disturbance, additionally test error is also easily amplified at double.
Currently mainly there are two kinds of consolidation apparatus, lever consolidation apparatus and full automatic gas pressure consolidation apparatus.Lever consolidates
Instrument is application lever principle, manually loads with counterweight, mainly has simple lever and two kinds of consolidation apparatus of double lever, normal in common laboratory
See.Full-automatic gas pressure type consolidation apparatus is then to have changed the load mode of lever consolidation apparatus into air pressure-loading.Instantly most levers
Formula consolidation apparatus subjects soil sample is less, and process of the test ignores the disturbance that exploitation soil sample has been subject to, relatively big on test data impact,
But due to its small volume, it is simple to operation, as the test apparatus of surveying laboratory data in most laboratory.Full-automatic gas
In the then most soil tests for there being particular/special requirement of pressure consolidation apparatus, it is possible to adding using continually varying load as consolidation should
Power, compared to the hierarchical loading of lever consolidation apparatus, the load applied continuously more meets reality, but requires higher to operation,
And it is expensive.
The information being disclosed in this background section is merely intended to increase the understanding of the general background to the present invention, and should not
When being considered to recognize or imply in any form this information structure prior art well known to persons skilled in the art.
Summary of the invention
It is an object of the invention to provide a kind of consolidation apparatus measuring pore pressure, thus when overcoming existing consolidation apparatus to measure pore pressure
Operation is complicated, experimental precision shortcoming low, expensive.
For achieving the above object, the invention provides a kind of consolidation apparatus measuring pore pressure, including: soil sample apparatus for placing, institute
It is filled with soil sample to be detected in stating soil sample apparatus for placing, soil sample same plane is provided with multiple described soil pressure cell, at soil
The same vertical direction of sample is provided with multiple soil pressure cell；Pressure head, it is located in fixing device, and corresponding described soil sample apparatus for placing
Arrange, for described soil sample is applied pressure；Displacement transducer, it is located on described pressure head, for measuring the deflection of soil sample；
And Measurement and Control System, itself and described soil pressure cell, described elevating mechanism and institute's displacement sensors data cube computation.
Preferably, in technique scheme, including elevating mechanism, it is connected with described pressure head, is used for controlling described pressure head
Lifting.
Preferably, in technique scheme, described elevating mechanism is jack.
Preferably, in technique scheme, described jack is hydraulic jack.
Preferably, in technique scheme, including elevating mechanism, it is connected with described soil sample apparatus for placing, is used for controlling
The lifting of described soil sample apparatus for placing.
Preferably, in technique scheme, described pressure head is located in fixing device, and described fixing device includes: support platform,
Described pressure head is located on described support platform；Column, it is located on described support platform, and described column is provided with and screws part；And it is horizontal
Beam, it is set up between described column, is positioned at above described pressure head.
Compared with prior art, there is advantages that
(1) the invention provides a kind of consolidation apparatus measuring pore pressure, soil pressure cell is installed under the different depth of the soil body and surveys
Pore pressure under amount different depth and under the same degree of depth Different Plane position soil pressure cell be installed measure Different Plane position
Pore pressure, such that it is able to draw under different depth Different Plane location hole under the time dependent curve of pore pressure dissipation and same depth
The pressure time dependent curve of dissipation.Measured the deflection of the soil body by displacement transducer, therefore, it is possible to simultaneously by pore pressure and
The deformation of the soil body is observed and reflects the consolidation process of the soil body.
(2) process of whole consolidation experiment need not personnel guard, is set by corresponding Measurement and Control System Automatic Program
Fixed pressurization, it is possible to be greatly improved work efficiency.Multistage loadings pressure is completed in can also simulating the regular hour；Sedimentation deformation leads to
Cross displacement transducer collection data and can reduce error, make the data collected reflect the concreteness of the soil body more truly
Shape.
Accompanying drawing explanation
Fig. 1 is the structural representation of the consolidation apparatus of the measurement pore pressure according to the present invention.
Fig. 2 be the measurement pore pressure according to the present invention consolidation apparatus in the structural representation that is embedded in soil sample of soil pressure cell.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Scope of protecting is not limited by detailed description of the invention.
Explicitly indicating that unless otherwise other, otherwise in entire disclosure and claims, term " includes " or it becomes
Change and such as " comprising " or " including " etc. will be understood to comprise stated element or ingredient, and do not get rid of other yuan
Part or other ingredient.
As shown in Figure 1 to Figure 2, according to a kind of consolidation apparatus measuring pore pressure of the specific embodiment of the invention, including: soil sample
Apparatus for placing 1, soil sample apparatus for placing 1 is placed on base 2.Mainly use diameter 600mm, the soil sample of high 200mm.Soil sample is contained
It is filled with soil sample to be detected in putting device 1, soil sample same plane is provided with multiple soil pressure cell 3, same vertically in soil sample
Direction is provided with multiple soil pressure cell 3.Sensor accuracy ± the 0.2%F.S of soil pressure cell 3, pressure stability precision ± 1%.?
Install under the different depth of the soil body soil pressure cell measure the pore pressure under different depth and under the same degree of depth Different Plane position
Soil pressure cell is installed and measures the pore pressure of Different Plane position, such that it is able to show that under different depth, pore pressure dissipation is time dependent
Pore pressure dissipation time dependent curve in Different Plane position under curve and same depth.Elevating mechanism 4 is connected with pressure head 5, excellent
Selection of land, elevating mechanism 4 is hydraulic jack.Hydraulic jack and pressure head 5 are located in fixing device 6.The corresponding soil sample of pressure head 5 holds
Device 1 is arranged, and is positioned at above soil sample apparatus for placing 1.Axially apply maximum stress 400KPa.Displacement transducer (not shown) is located at
On pressure head 5, for measuring the deflection of soil sample.Being moved downward by pressure head 5 by elevating mechanism 4, pressure head 5 contacts with soil sample, gives
Soil sample is pressurizeed, and the soil pressure cell 3 in soil sample sends data to Measurement and Control System 7.Measurement and Control System 7 and elevating mechanism 4
Data cube computation, controls the distance that elevating mechanism 4 pressure head 5 moves, i.e. controls the pressure head 5 pressurization to soil sample, complete multistage loadings pressure
Power.Measurement and Control System 7 and displacement transducer data cube computation, can measure the sedimentation deformation of soil sample by displacement transducer.
Embodiment 2
Another reasonable embodiment, the present embodiment is different from embodiment 1 to be, elevating mechanism 4 and soil sample hold dress
Put 1 connection.Elevating mechanism 4 is hydraulic jack.The corresponding soil sample apparatus for placing 1 of pressure head 5 is arranged.Axially apply maximum stress
400KPa.Displacement transducer (not shown) is located on pressure head 5, for measuring the deflection of soil sample.By elevating mechanism 4 by soil sample
Apparatus for placing promotes, and pressure head 5 contacts with soil sample, pressurizes to soil sample, and the soil pressure cell 3 in soil sample sends data to measure control
System 7.Measurement and Control System 7 and elevating mechanism 4 data cube computation, control elevating mechanism 4 promote the lifting of soil sample apparatus for placing 1 away from
From, control the pressure head pressurization to soil sample simultaneously, complete multistage loadings pressure.Measurement and Control System 7 is with displacement transducer data even
Connect, the sedimentation deformation of soil sample can be measured by displacement transducer.
Preferably, fixing device 6 includes: support platform 61, and pressure head 5 is located on support platform 61.Column 62 is respectively arranged on support
The left and right sides of platform 61.Column 62 is provided with and screws part 63, and this screws part is nut.Crossbeam 64 is set up in left and right two root posts 62
Between, it is positioned at above pressure head 5.
When the mounting means that elevating mechanism is embodiment 1, elevating mechanism, i.e. hydraulic jack 4 are placed in support platform 61 He
Between crossbeam 64, hydraulic jack 4 is fixed by the part 63 that screws screwed on column 62.It is pressure head 5 below hydraulic jack 4, pressure
5 corresponding soil sample apparatus for placing 1 are arranged.
When the mounting means that elevating mechanism is embodiment 2, pressure head 5 is placed between support platform 61 and crossbeam 64, screws vertical
Pressure head 5 is fixed by the part 63 that screws on post 62.The corresponding soil sample apparatus for placing 1 of pressure head 5 is arranged.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration.These describe
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can much change
And change.The purpose selected exemplary embodiment and describe is to explain that the certain principles of the present invention and reality thereof should
With so that those skilled in the art be capable of and utilize the present invention various different exemplary and
Various different selections and change.The scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (6)
1. the consolidation apparatus measuring pore pressure, it is characterised in that including:
Soil sample apparatus for placing, is filled with soil sample to be detected in described soil sample apparatus for placing, is provided with many on soil sample same plane
Individual described soil pressure cell, is provided with multiple soil pressure cell on the same vertical direction of soil sample；
Pressure head, it is located in fixing device, and corresponding described soil sample apparatus for placing is arranged, for described soil sample is applied pressure；
Displacement transducer, it is located on described pressure head, for measuring the deflection of soil sample；And
Measurement and Control System, itself and described soil pressure cell, described elevating mechanism and institute's displacement sensors data cube computation.
The consolidation apparatus of measurement pore pressure the most according to claim 1, it is characterised in that include elevating mechanism, itself and described pressure
Head connects, for controlling the lifting of described pressure head.
The consolidation apparatus of measurement pore pressure the most according to claim 2, it is characterised in that described elevating mechanism is jack.
The consolidation apparatus of measurement pore pressure the most according to claim 2, it is characterised in that described jack is hydraulic jack.
The consolidation apparatus of measurement pore pressure the most according to claim 1, it is characterised in that include elevating mechanism, itself and described soil
Sample apparatus for placing connects, for controlling the lifting of described soil sample apparatus for placing.
The consolidation apparatus of measurement pore pressure the most according to claim 1, it is characterised in that described fixing device includes:
Supporting platform, described pressure head is located on described support platform；
Column, it is located on described support platform, and described column is provided with and screws part；And
Crossbeam, it is set up between described column, is positioned at above described pressure head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610627620.7A CN106198376A (en) | 2016-08-02 | 2016-08-02 | Measure the consolidation apparatus of pore pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610627620.7A CN106198376A (en) | 2016-08-02 | 2016-08-02 | Measure the consolidation apparatus of pore pressure |
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| CN106198376A true CN106198376A (en) | 2016-12-07 |
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| CN201610627620.7A Pending CN106198376A (en) | 2016-08-02 | 2016-08-02 | Measure the consolidation apparatus of pore pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132128A (en) * | 2017-05-08 | 2017-09-05 | 兰州交通大学 | A kind of molten sunken coefficient testing device of new indoor Coarse Saline |
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| CN204405439U (en) * | 2015-01-04 | 2015-06-17 | 中国矿业大学 | A kind of high compression amount consolidation testing device |
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2016
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|---|---|---|---|---|
| CN101059491A (en) * | 2007-05-24 | 2007-10-24 | 石家庄铁道学院 | Indoor quick loaded concretion experiment apparatus and its method |
| CN101430316A (en) * | 2008-12-15 | 2009-05-13 | 浙江大学 | Electroosmosis-load combined consolidometer |
| CN202066775U (en) * | 2011-03-08 | 2011-12-07 | 南昌市建筑工程集团有限公司 | Lever type combined permeability and consolidation apparatus |
| CN202372400U (en) * | 2011-12-16 | 2012-08-08 | 长沙理工大学 | Power transmission device capable of protecting displacement sensing device and simulating function of automobile tire |
| CN103645098A (en) * | 2013-12-31 | 2014-03-19 | 长安大学 | Asphalt pavement load temperature coupling testing device and testing method thereof |
| CN103884561A (en) * | 2014-04-10 | 2014-06-25 | 中国科学院武汉岩土力学研究所 | Device for artificially preparing test soil sample of structural intact soft clay and method thereof |
| CN204405439U (en) * | 2015-01-04 | 2015-06-17 | 中国矿业大学 | A kind of high compression amount consolidation testing device |
| CN105445120A (en) * | 2015-01-06 | 2016-03-30 | 北京市道路工程质量监督站 | In-situ test method for shear strength of asphalt mixture |
| CN104897477A (en) * | 2015-06-19 | 2015-09-09 | 河北工程大学 | Bitumen-like material creep test device |
| CN206038496U (en) * | 2016-08-02 | 2017-03-22 | 广西大学 | Consolidation apparatus that measuring aperture was pressed |
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| CN107132128A (en) * | 2017-05-08 | 2017-09-05 | 兰州交通大学 | A kind of molten sunken coefficient testing device of new indoor Coarse Saline |
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