CN108398338A - It is a kind of can temperature control geomembrane and soil contact face shearing test device and test method - Google Patents
It is a kind of can temperature control geomembrane and soil contact face shearing test device and test method Download PDFInfo
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- CN108398338A CN108398338A CN201810088871.1A CN201810088871A CN108398338A CN 108398338 A CN108398338 A CN 108398338A CN 201810088871 A CN201810088871 A CN 201810088871A CN 108398338 A CN108398338 A CN 108398338A
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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
- G01N2203/0025—Shearing
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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
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
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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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Abstract
The invention discloses it is a kind of can temperature control geomembrane and soil contact face shearing test device and test method, water-bath pipeline is arranged in the present invention in down cut box, water temperature is adjusted to water-bath pipeline by lower water temperature case, geomembrane is set to be under different test temperatures, for simulating geomembrane use environment temperature change, the test of geomembrane and soil contact face shear strength under different temperatures is realized；Test method according to the present invention, change curve of the geomembrane with soil contact face shear strength with shear displacemant at a temperature of identical normal stress, varying environment can be measured, and under different normal stresses, identical environment temperature geomembrane and soil contact face shear strength change curve, obtain the difference that geomembrane is varied with temperature with earth and stone material contact interface shear strength, during present invention experiment, the setting of temperature, the application of load, shear displacemant and the setting of shear rate and the acquisition of data are completed by computer installation, easy to operate.
Description
Technical field
The present invention relates to geomembranes and soil contact face shearing test equipment manufacturing technology field, more particularly to one kind can temperature control
Geomembrane and soil contact face shearing test device and test method.
Background technology
Geomembrane is because having many advantages, such as that barrier performance is good, adaptive deformation ability is strong, low engineering cost and speed of application are fast,
It is widely used in the seepage control projects such as dykes and dams, library disk, channel, refuse landfill.Wherein, geomembrane connects with underlayer or up-protective layer
The shear strength of contacting surface is the important indicator of engineering design, is directly related to the stability against sliding of geomembrane or up-protective layer.I
State is geographical vast, some geomembrane anti-seepage engineering location winter summer temperature difference or day and night temperature are big.Geomembrane belongs to temperature sensitivity
Proximate matter material, it is big that physico-mechanical properties vary with temperature difference, therefore probes into geomembrane and earth and stone material contact surface under different temperatures
Shear property have important engineering application value.
In the prior art, geomembrane and earth and stone material contact surface are often tested by geomembrane and earth and stone material interface direct shear test
Shear property.But existing direct shear apparatus does not account for shadow of the test temperature to its shear characteristics of contact surface of geomembrane at present
It rings, geomembrane contact face mechanical index and its changing rule under different temperatures can not be tested.It can be into therefore, it is necessary to develop one kind
The geomembrane contact surface shearing test device and test method that trip temperature is adjusted.
Invention content
For deficiencies of the prior art, the purpose of the present invention is to provide it is a kind of can temperature control geomembrane and soil
Contact surface shearing test device and test method, the device can control geomembrane and be cut at different temperatures with soil contact face
Experiment is cut, geomembrane and soil contact face shear strength can be probed under different temperatures with temperature according to test method of the present invention
The mechanical characteristic of variation.
To realize that above-mentioned technical goal, the present invention provide the following technical solutions：
It is a kind of can temperature control geomembrane and soil contact face shearing test device, including stiff baseplate is fixed on stiff baseplate
It is provided with reaction frame, down cut box and upper shear box is set gradually from bottom to top on the stiff baseplate in reaction frame, above cuts
The both ends horizontal for cutting box shear direction is constrained on reaction frame, and soil sample is filled in upper shear box, soil is laid on down cut box surface
Work film；Force transmitting board is placed on upper shear box soil sample surface, is arranged normal direction loading device at the top of force transmitting board, normal direction loading device be used for
Soil sample in force transmitting board and upper shear box applies normal pressure, and soil sample is made to be in close contact with geomembrane, and the side of down cut box connects
The shearing transmission device for applying horizontal loading is connect, the side of down cut box is also associated with horizontal direction displacement sensor；Its feature exists
In：
Serpentine-like tiling has water-bath pipeline, the radiating surface of water-bath pipeline and the laying direction of geomembrane flat in down cut box
Row, is arranged heat-conducting plate, multiple temperature sensors, water-bath pipeline is connected on heat-conducting plate between water-bath pipeline and the geomembrane of top
Lower section is provided with thermal insulation layer, and the import and export of water-bath pipeline is connected to lower water temperature case, and thermometric is both provided at import and export
Instrument, temperature measurer and temperature sensor are electrically connected with data collector and computer.
For water-bath pipeline for providing geotechnological film test required temperature, the import of water-bath pipeline passes through outlet pipe and lower water temperature
Case connects, and the outlet of water-bath pipeline is connect by return pipe with lower water temperature case, and outlet pipe and return pipe are rubber hose.
Outlet pipe and return pipe are always relaxed state during the test, and guarantee does not have an impact the movement of down cut box.
Preferably, down cut cassette bottom face is equipped with idler wheel, and the corresponding position of stiff baseplate is provided with track, and idler wheel is set
In in track.Reduce the frictional force between down cut box and stiff baseplate, prevents stiff baseplate and the friction of down cut box from can make
At test error.
It is connected with normal pressure sensor on normal direction loading device, shear load biography is connected on horizontal shear transmission device
Sensor, normal pressure sensor, shear load sensor and horizontal direction displacement sensor are acquired by data line and data respectively
Device is connected, and data collector and computer are electrically connected.Shear load sensor is connected with shearing transmission device, is applied to for recording
Horizontal shear force on down cut box, horizontal direction displacement sensor record the shear displacemant of shear box.
Geomembrane is fixed on down cut box surface surrounding by geomembrane fixture by anchor bolt, wherein along shear direction
Two geomembrane fixtures are equipped with the track parallel with shear direction, and the upper shear box is the structure of square-outside and round-inside, and plane
Size is less than the size of geomembrane, and the upper shear box bottom edge offers track along shear direction, by upper shear box
Track and geomembrane fixture track in be arranged ball, so that shear box is placed on geomembrane fixture.
Geomembrane is fixed on down cut box surface by geomembrane fixture, and soil sample is filled in upper shearing according to design compactness
In box, vertical force transmitting board is placed at the top of upper shear box earth material, normal direction loading device is equipped at the top of reaction frame, by force transmitting board to upper
Shear box soil sample applies vertical load.
The both ends horizontal of upper shear box shear direction of the present invention is constrained on reaction frame, both ends by lateral idler wheel with
Baffle connects, and baffle is connect by rigid connecting rod with reaction frame, and the upper shear box is made vertically to can move freely, but limits
It moves in horizontal shear direction.
It is a kind of can temperature control geomembrane and soil contact face shearing test device test method, include the following steps：
1) water-bath pipeline is installed in down cut box, the laying direction of the radiating surface and geomembrane that ensure water-bath pipeline is flat
Row, the import and export of water-bath pipeline are connected to lower water temperature case；Thermal insulation layer is set below water-bath pipeline, is set above water-bath pipeline
Heat-conducting plate is set, multiple temperature sensors are connected on heat-conducting plate, the geomembrane cut, geomembrane surrounding institute are laid on heat-conducting plate
Geomembrane track fixture is stated to fix；
2) be positioned in geomembrane track fixture by ball, by the upper shear box with down cut is box-packed prepares, will be upper
The both ends horizontal of shear box shear direction is constrained on reaction frame, then soil sample is packed into upper shear box, and be densified to design
Compactness, and soil sample is made to be in close contact with geomembrane；
3) force transmitting board is placed at the top of upper shear box soil sample, installs the normal direction loading device, normal pressure successively
Sensor, shearing transmission device, shear load sensor and horizontal direction displacement sensor, and by the normal pressure sensor,
Shear load sensor, horizontal direction displacement sensor and temperature sensor are connected by data line with data collector, and number is run
Check whether each component is in normal operating conditions according to collector；
4) lower water temperature case is opened, setting experiment water temperature applies geomembrane using the flow by the water-bath pipeline
Temperature observes the temperature that temperature sensor monitors arrive on the temperature measurer and the heat-conducting plate of the water-bath conduit entrance and outlet,
If each temperature reaches test temperature and tends towards stability, temperature control work is completed；
5) apply Normal stress using the normal direction loading device, observing normal stress by data collector reaches experiment
Stress simultaneously remains stable, and the temperature for adjusting lower water temperature case makes temperature measurer and temperature sensor collect the experiment temperature of geomembrane
Degree reaches setting value and remains stable, the shear rate of setting shearing transmission device and maximum shear displacement, with shearing transmission dress
Application shear load is set, when shear displacemant reaches maximum shear displacement, stops shearing, sheds normal direction loading device, take out and pass
Power plate, cleaning experiment earth material and geomembrane, and down cut box is retracted into original position；Pass through data collector and calculating in shear history
Machine acquires and records the test temperature down cut stress in real time, shear displacemant changes with time and shear stress and normal direction are answered
The relationship of power obtains geomembrane and soil sample contact surface shearing strength curve graph under the test temperature.
The beneficial effects of the invention are as follows：
Water-bath pipeline is arranged in the present invention in down cut box, adjusts water temperature to water-bath pipeline by lower water temperature case, makes soil
Work film is under different test temperatures, for simulating geomembrane use environment temperature change, is realized geotechnological under different temperatures
The test of film and soil contact face shear strength；
Soil sample planar dimension is less than down cut box surface geomembrane in upper shear box described in experimental rig of the present invention
The planar dimension of sample, and geomembrane is fixed using geomembrane special fixture, the section of shear keeps solid during realizing experiment
It is fixed, it solves the problems, such as geomembrane surfacing, and upper shear box is designed to square-outside and round-inside structure, improves in shear history
Soil sample stress concentration phenomenon.
Test method according to the present invention can measure geomembrane at a temperature of identical normal stress, varying environment
With soil contact face shear strength with the change curve of shear displacemant, and the geotechnique under different normal stresses, identical environment temperature
The change curve of film and soil contact face shear strength obtains what geomembrane was varied with temperature with earth and stone material contact interface shear strength
Difference, during present invention experiment, the setting of temperature, the application of Normal stress, the setting of shear displacemant and shear rate and
The acquisition of data is completed by computer installation, easy to operate.
Description of the drawings
Fig. 1 be the present invention can temperature control geomembrane and soil contact face shearing test device front view；
Fig. 2 be the present invention can temperature control geomembrane and soil contact face shearing test device left view；
Fig. 3 is the structural schematic diagram of shear box in the present invention；
Fig. 4 is the left side half sectional view of Fig. 3；
Fig. 5 is the vertical view of Fig. 3；
Fig. 6 is the floor plan of water-bath pipeline in the present invention；
Fig. 7 is different temperatures down cut stress and shear displacemant relation curve；Wherein 7a be normal stress be 50kPa when,
Different temperatures down cut stress and shear displacemant relation curve；Wherein 7b is normal stress when being 100kPa, cuts under different temperatures
Shearing stress and shear displacemant relation curve；Wherein 7c be normal stress be 200kPa when, different temperatures down cut stress with shearing
Displacement relation curve；
Fig. 8 is geomembrane and sandy gravel contact surface shearing strength curve under different temperatures.
Reference numeral：1, stiff baseplate, 2, reaction frame, 3, down cut box, 4, heat-conducting plate, 5, upper shear box, 6, force transmitting board,
7, ball, 8, the track of geomembrane fixture, 9, geomembrane fixture, 10, water-bath pipeline, 11, temperature measurer, 12, valve, 13, water outlet
Pipe, 14, return pipe, 15, lower water temperature case, 16, thermal insulation layer, 17, idler wheel, 18, track, 19, normal direction loading device, 20, shearing
Transmission device, 21, normal pressure sensor, 22, shear load sensor, 23, horizontal direction displacement sensor, 24, data acquisition
Device, 25, computer, 26, baffle, 27, rigid connecting rod, 28, lateral idler wheel, 29, anchor bolt, 30, temperature sensor.
Specific implementation mode
With reference to the accompanying drawings and examples, it elaborates to the present invention.
As shown in Figure 1, it is a kind of can temperature control geomembrane and soil contact face shearing test device, including stiff baseplate 1, rigidity
It is fixedly installed reaction frame 2 on bottom plate, sets gradually down cut box 3 and upper from bottom to top on the stiff baseplate in reaction frame
The both ends horizontal of shear box 5, upper shear box shear direction is constrained on reaction frame, and soil sample, down cut box are filled in upper shear box
It is laid with geomembrane on surface and is fixed with geomembrane fixture 9；Force transmitting board 6 is placed on upper shear box soil sample surface, is set at the top of force transmitting board
Normal direction loading device 19 is set, normal pressure sensor 21 is fixed on normal direction loading device 19, normal direction loading device 19 and power transmission
Plate 6 connects, and normal direction loading device applies normal pressure, the side of down cut box for the soil sample into force transmitting board and upper shear box
Connection applies the shearing transmission device 20 of horizontal loading, and shear load sensor 22 is connected with shearing transmission device 20, down cut
The side of box is also associated with horizontal direction displacement sensor 23, and shear load sensor is for recording the water being applied on down cut box
Straight snips shear force, horizontal direction displacement sensor record the shear displacemant of shear box.
Normal pressure sensor, shear load sensor and horizontal direction displacement sensor are adopted by data line and data respectively
Storage is connected, and data collector 24 and computer 25 are electrically connected.
Shearing transmission device of the present invention is the prior art, can realize down cut box on stiff baseplate in the prior art
Mobile structure, details are not described herein.
Shown in Fig. 1,2,3, upper shear box 5 is connect by lateral idler wheel 28 with baffle 26 along the both ends of shear direction, gear
Plate 26 is connected to by rigid connecting rod 27 on reaction frame 2, and upper shear box can only be parallel in immovable on shear direction
Normal stress it is vertically movable.
As shown in Figure 5, the upper shear box is the structure of square-outside and round-inside, and planar dimension is less than the size of geomembrane, institute
It states shear box bottom edge and offers track along shear direction, the geomembrane surrounding geomembrane fixture 9 and anchor that will be cut
Fixing bolt 29 is fixed on down cut box surface, wherein along shear direction geomembrane fixture be equipped with it is parallel with shear direction
Track, by upper shear box track and geomembrane fixture track 8 in be arranged ball 7, so that shear box is placed in geotechnique
On film fixture, the upper shear box is made vertically to can move freely, but limit levels shear direction moves.
Shown in Fig. 1,2, down cut cassette bottom face is equipped with idler wheel 17, and the corresponding position of stiff baseplate is provided with track
18, idler wheel is placed in track.
As shown in Figure 6, serpentine-like tiling has a water-bath pipeline 10 in down cut box, the radiating surface of water-bath pipeline and geomembrane
It is parallel to be laid with direction, heat-conducting plate 4 is set between water-bath pipeline and the geomembrane of top, multiple temperature sensing are connected on heat-conducting plate
Device 30 ensures the temperature control effect of water-bath pipeline 10, avoids extra heat exchange, and be monitored to the test temperature of geomembrane.
It is provided with thermal insulation layer 16 below water-bath pipeline, the import and export of water-bath pipeline is connected to lower water temperature case 15, and at import and export
It is both provided with temperature measurer 11 and valve 12, temperature measurer and temperature sensor are electrically connected with data collector and computer.
The disengaging water flow that can control water-bath pipeline 10 by control valve 12 is observed 10 import of water-bath pipeline and is gone out
The temperature that the temperature measurer 11 of mouth and the temperature sensor 30 of the heat-conducting plate 4 monitor, if each temperature reaches test temperature and becomes
In stabilization, then temperature control work is completed, and shearing test can be started.
The inlet and outlet of water-bath pipeline 10 is connect with the outlet pipe of lower water temperature case 15 13 and return pipe 14 respectively, water outlet
Pipe 13 and return pipe 14 are rubber hose, can control geomembrane to reach test temperature, 13 He of outlet pipe according to lower water temperature case 15
Return pipe 14 is always relaxed state during the test, is not had an impact to the movement of down cut box 3.
Soil sample uses sand gravel, maximum dry density 1.96g/cm in the embodiment of the present invention3, match by certain granules grading
It sets, geotechnological film thickness uses 0.75mm, with 5 DEG C, 25 DEG C and 45 DEG C three test temperatures, with 50kPa, 100kPa, 200kPa method
It is tested to stress.
It is of the present invention it is a kind of can the geomembrane of temperature control include with the step of soil contact face shearing test method：
1) water-bath pipeline is installed in down cut box, the laying direction of the radiating surface and geomembrane that ensure water-bath pipeline is flat
Row, the import and export of water-bath pipeline are connected to lower water temperature case；Thermal insulation layer, water are set between water-bath pipeline and the soil sample of lower section
It bathes and heat-conducting plate is set above pipeline, connect multiple temperature sensors on heat-conducting plate, the geomembrane cut is laid on heat-conducting plate, soil
Work film surrounding is fixed with the geomembrane track fixture；
2) be positioned in geomembrane track fixture by ball, by the upper shear box with down cut is box-packed prepares, will be upper
The both ends horizontal of shear box shear direction is constrained on reaction frame, then soil sample is packed into upper shear box, and be densified to design
Compactness, and soil sample is made to be in close contact with geomembrane；
3) force transmitting board is placed at the top of upper shear box soil sample, installs the normal direction loading device, normal pressure successively
Sensor, shearing transmission device, shear load sensor and horizontal direction displacement sensor, and by the normal pressure sensor,
Shear load sensor, horizontal direction displacement sensor and temperature sensor are connected by data line with data collector, and number is run
According to collector, check whether each component is in normal operating conditions；
4) lower water temperature case is opened, setting experiment water temperature applies geomembrane using the flow by the water-bath pipeline
Temperature observes the temperature that temperature sensor monitors arrive on the temperature measurer and the heat-conducting plate of the water-bath conduit entrance and outlet,
If each temperature reaches test temperature and tends towards stability, temperature control work is completed；
5) according to test requirements document, apply Normal stress using normal direction loading device, normal direction is observed by data collector and is answered
Power reaches 50kPa and remains stable, and the temperature for adjusting lower water temperature case makes temperature measurer and temperature sensor collect geomembrane
Test temperature reach 5 DEG C and remain stable, set shearing transmission device shear rate as 1mm/min, maximum shear displacement
For 25mm, applies shear load with shearing transmission device, remembered by data collector and computer real-time acquisition in shear history
Shear stress, shear displacemant change with time during record experiment, when shear displacemant reaches maximum shear displacement, stop cutting
It cuts, sheds normal direction loading device, take out force transmitting board, cleaning experiment earth material and geomembrane, and down cut box is retracted into original position；Then
With identical normal stress, after the test temperature of geomembrane is increased to 25 DEG C and 45 DEG C respectively, acquire and record respectively this two
Shear stress, shear displacemant change with time at a temperature, obtain curve graph result as shown in Figure 7a.
Then geomembrane and soil sample are reinstalled, applied Normal stress is increased to 100kPa using normal direction loading device
And remaining stable, the temperature for adjusting lower water temperature case makes the test temperature that temperature measurer and temperature sensor collect geomembrane reach
It to 5 DEG C and remains stable, sets the shear rate of shearing transmission device as 1mm/min, maximum shear displacement is 25mm, with shearing
Transmission device applies shear load, is cut in the process by data collector and the experiment of computer real-time acquisition record in shear history
Shearing stress, Stress displacement change with time, and when shear displacemant reaches maximum shear displacement, stop shearing, shed normal direction and add
It carries and sets, take out force transmitting board, cleaning experiment earth material and geomembrane, and down cut box is retracted into original position；Then with identical normal direction
After the test temperature of geomembrane is increased to 25 DEG C and 45 DEG C by stress respectively, acquires and record respectively the two temperature down cuts and answer
Power, shear displacemant change with time, and obtain curve graph result as shown in Figure 7b.
Geomembrane and soil sample are finally reinstalled again, are increased to applied Normal stress using normal direction loading device
200kPa simultaneously remains stable, and the temperature for adjusting lower water temperature case makes temperature measurer and temperature sensor collect the experiment of geomembrane
Temperature reaches 5 DEG C and remains stable, sets the shear rate of shearing transmission device as 1mm/min, and maximum shear displacement is 25mm,
Apply shear load with shearing transmission device, was tested by data collector and computer real-time acquisition record in shear history
Shear stress, Stress displacement change with time in journey, when shear displacemant reaches maximum shear displacement, stop shearing, shed
Normal direction loading device takes out force transmitting board, cleaning experiment earth material and geomembrane, and down cut box is retracted original position；Then with identical
Normal stress the test temperature of geomembrane is increased to 25 DEG C and 45 DEG C respectively after, at a temperature of acquiring and recording respectively the two
Shear stress, shear displacemant change with time, and obtain curve graph result as shown in Figure 7 c.
By carrying out geomembrane and soil sample contact surface direct shear test under different temperatures, obtains shear stress and closed with shear displacemant
It is curve, as shown in Figure 7.As shown in Figure 7, at one timing of normal stress, geomembrane and peak in sandy gravel contact surface shear history
Value shear stress increases with the raising of temperature.It is answered using geomembrane at different temperatures and the shearing of sandy gravel interfacial peak
Power, drafting and normal stress relation curve, as shown in Figure 8.As shown in Figure 8, the shearing strength value of geomembrane at relatively high temperatures
More than the shearing strength value under lower temperature.
The above embodiment of the present invention test method is experiment process in the case of unidirectional shearing and as a result, the test method
The experiment in the case of circulation shear is applied also for device, method is identical, i.e., when positive shear displacemant reaches setting value, calculates
Machine, which automatically controls shearing transmission device, makes down cut box move backward, and carries out flip Trim, is set when flip Trim displacement reaches this
When definite value, computer controlled automatic shearing transmission device keeps down cut box positive mobile again, positive shearing is carried out again, under making
Shear box is retracted into initial position, and then computer control shearing transmission device is stopped, and stops shearing, sheds normal direction load
Device takes out force transmitting board, cleaning experiment soil sample and geomembrane, completes the circulation shear experiment of contact surface under the shear displacemant value.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail can carry out a variety of equivalents to technical scheme of the present invention within the scope of the technical concept of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.
Claims (7)
1. it is a kind of can temperature control geomembrane and soil contact face shearing test device, including stiff baseplate, on stiff baseplate fixation set
It is equipped with reaction frame, sets gradually down cut box and upper shear box, upper shearing from bottom to top on the stiff baseplate in reaction frame
The both ends horizontal of box shear direction is constrained on reaction frame, and soil sample is filled in upper shear box, and down cut box surface is laid with geomembrane；
Force transmitting board is placed on upper shear box soil sample surface, and normal direction loading device is arranged at the top of force transmitting board, and normal direction loading device is used for power transmission
Soil sample in plate and upper shear box applies normal pressure, and soil sample is made to be in close contact with geomembrane, and the side connection of down cut box is applied
Add the shearing transmission device of horizontal loading, horizontal direction displacement sensor is also associated on down cut box；It is characterized in that：
Snakelike in down cut box to be equipped with water-bath pipeline, the radiating surface of water-bath pipeline is parallel with the laying direction of geomembrane, water-bath
Heat-conducting plate is set between pipeline and the geomembrane of top, multiple temperature sensors are connected on heat-conducting plate, are set below water-bath pipeline
It is equipped with thermal insulation layer, the import and export of water-bath pipeline is connected to lower water temperature case, and temperature measurer is both provided at import and export, thermometric
Instrument and temperature sensor are electrically connected with data collector and computer.
2. it is according to claim 1 can temperature control geomembrane and soil contact face shearing test device, it is characterised in that：It is described
Down cut cassette bottom face is equipped with idler wheel, and the corresponding position of stiff baseplate is provided with track, and idler wheel is placed in track.
3. it is according to claim 1 can temperature control geomembrane and soil contact face shearing test device, it is characterised in that：Water-bath
The import of pipeline is connect by outlet pipe with lower water temperature case, and the outlet of water-bath pipeline is connected by return pipe and lower water temperature case
It connects, and outlet pipe and return pipe are rubber hose.
4. it is according to claim 1 can temperature control geomembrane and soil contact face shearing test device, it is characterised in that：Normal direction
It is connected with normal pressure sensor on loading device, shears and is connected with shear load sensor on transmission device, normal pressure passes
Sensor, shear load sensor and horizontal direction displacement sensor are connected by data line with data collector respectively, data acquisition
Device and computer are electrically connected.
5. it is according to claim 1 can temperature control geomembrane and soil contact face shearing test device, it is characterised in that：Geotechnique
Film is fixed on down cut box surface surrounding by geomembrane fixture by anchor bolt, wherein two geomembranes along shear direction press from both sides
Tool is equipped with the track parallel with shear direction, and the upper shear box is the structure of square-outside and round-inside, and planar dimension is less than geotechnique
The size of film, the upper shear box bottom edge offer track along shear direction, pass through track in upper shear box and geotechnique
Ball is set in the track of film fixture, shear box is made to be placed on geomembrane fixture.
6. it is according to claim 5 can temperature control geomembrane and soil contact face shearing test device, it is characterised in that：It is described
The both ends of upper shear box are connect by lateral idler wheel with baffle, and baffle is connect by rigid connecting rod with reaction frame.
7. it is a kind of can temperature control geomembrane and soil contact face shearing test method, it is characterised in that：Include the following steps：
1）Water-bath pipeline is installed in down cut box, ensures that the radiating surface of water-bath pipeline is parallel with the laying direction of geomembrane, water
The import and export of bath pipeline is connected to lower water temperature case；Thermal insulation layer is set below water-bath pipeline, heat conduction is set above water-bath pipeline
Plate connects multiple temperature sensors on heat-conducting plate, is laid with the geomembrane cut on heat-conducting plate, and geomembrane surrounding is with the geotechnique
Film fixture is fixed；
2）Be positioned in geomembrane track fixture by ball, by the upper shear box with down cut is box-packed prepares, by upper shearing
The both ends horizontal of box shear direction is constrained on reaction frame, soil sample is packed into upper shear box, and be densified to design compactness, and
Soil sample is set to be in close contact with geomembrane；
3）The force transmitting board is placed at the top of upper shear box soil sample, installs the normal direction loading device, normal pressure sensing successively
Device, shearing transmission device, shear load sensor and horizontal direction displacement sensor, and by the normal pressure sensor, shearing
Load transducer, horizontal direction displacement sensor and temperature sensor are connected by data line with data collector, and operation data is adopted
Storage checks whether each component is in normal operating conditions；
4）Lower water temperature case is opened, setting experiment water temperature applies temperature using the flow by the water-bath pipeline to geomembrane,
Observe the temperature that temperature sensor monitors arrive on the temperature measurer and the heat-conducting plate of the water-bath conduit entrance and outlet, Ruo Gewen
Degree reaches test temperature and tends towards stability, then temperature control work is completed；
5）Apply Normal stress using the normal direction loading device, observing normal stress by data collector reaches proof stress
And remaining stable, the temperature for adjusting lower water temperature case makes the test temperature that temperature measurer and temperature sensor collect geomembrane reach
To setting value and remain stable, the shear rate of setting shearing transmission device and maximum shear displacement, by shearing transmission device
Shear load is applied to down cut box, when shear displacemant reaches maximum shear displacement, stops shearing, sheds normal direction load dress
It sets, takes out force transmitting board, cleaning experiment earth material and geomembrane, and down cut box is retracted into original position；It is adopted by data in shear history
Storage and computer real-time acquisition and record the test temperature down cut stress, shear displacemant changes with time and shears and answers
The relationship of power and normal stress obtains geomembrane and soil sample contact surface shearing strength curve graph under the test temperature.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603903A (en) * | 2009-07-07 | 2009-12-16 | 河海大学 | Stacked ring type boxshear apparatus and to the method for testing composite liner material |
| CN101726443A (en) * | 2009-12-22 | 2010-06-09 | 上海大学 | Large-scale direct shear apparatus between geo-technic synthetic materials and between geo-technic synthetic materials and earth |
| KR20130100446A (en) * | 2012-03-02 | 2013-09-11 | 박인준 | Apparatus to testing shear of a different kinds's interface |
| CN203365229U (en) * | 2013-07-12 | 2013-12-25 | 上海大学 | Large interface characteristic direct shear apparatus applying cyclic load |
| CN105004666A (en) * | 2015-06-26 | 2015-10-28 | 中国科学院地质与地球物理研究所 | Geosynthetic material contact surface friction strength test method |
| CN206638534U (en) * | 2017-02-28 | 2017-11-14 | 河南理工大学 | One kind is used to survey soil and the lower Particle Breakage degree device of structure interface interaction |
| CN206756607U (en) * | 2017-04-06 | 2017-12-15 | 河南理工大学 | A kind of civil engineering boxshear apparatus |
| CN107525723A (en) * | 2017-08-14 | 2017-12-29 | 浙江大学宁波理工学院 | A kind of large-scale direct shear test method of pile-soil interaction for considering temperature action |
| CN107607403A (en) * | 2017-10-17 | 2018-01-19 | 中国科学院武汉岩土力学研究所 | A kind of geotechnological film stretching infiltration experiment device |
-
2018
- 2018-01-30 CN CN201810088871.1A patent/CN108398338B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603903A (en) * | 2009-07-07 | 2009-12-16 | 河海大学 | Stacked ring type boxshear apparatus and to the method for testing composite liner material |
| CN101726443A (en) * | 2009-12-22 | 2010-06-09 | 上海大学 | Large-scale direct shear apparatus between geo-technic synthetic materials and between geo-technic synthetic materials and earth |
| KR20130100446A (en) * | 2012-03-02 | 2013-09-11 | 박인준 | Apparatus to testing shear of a different kinds's interface |
| CN203365229U (en) * | 2013-07-12 | 2013-12-25 | 上海大学 | Large interface characteristic direct shear apparatus applying cyclic load |
| CN105004666A (en) * | 2015-06-26 | 2015-10-28 | 中国科学院地质与地球物理研究所 | Geosynthetic material contact surface friction strength test method |
| CN206638534U (en) * | 2017-02-28 | 2017-11-14 | 河南理工大学 | One kind is used to survey soil and the lower Particle Breakage degree device of structure interface interaction |
| CN206756607U (en) * | 2017-04-06 | 2017-12-15 | 河南理工大学 | A kind of civil engineering boxshear apparatus |
| CN107525723A (en) * | 2017-08-14 | 2017-12-29 | 浙江大学宁波理工学院 | A kind of large-scale direct shear test method of pile-soil interaction for considering temperature action |
| CN107607403A (en) * | 2017-10-17 | 2018-01-19 | 中国科学院武汉岩土力学研究所 | A kind of geotechnological film stretching infiltration experiment device |
Non-Patent Citations (1)
| Title |
|---|
| 高俊丽等: "大型拉拔直剪仪剪切盒的改装", 《上海大学学报(自然科学版)》 * |
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