CN109580369A - One kind is for large-scale earthwork horizontal plane variable loading system and its test method - Google Patents
One kind is for large-scale earthwork horizontal plane variable loading system and its test method Download PDFInfo
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- CN109580369A CN109580369A CN201811442209.8A CN201811442209A CN109580369A CN 109580369 A CN109580369 A CN 109580369A CN 201811442209 A CN201811442209 A CN 201811442209A CN 109580369 A CN109580369 A CN 109580369A
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- 238000010998 test method Methods 0.000 title claims abstract description 8
- 239000002689 soil Substances 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 238000002474 experimental method Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses one kind for large-scale earthwork horizontal plane variable loading system characterized by comprising vertically loads assembly comprising: upper loading frame, upper load cylinder and top board；Horizontal addload assembly, its lower part that the vertical load assembly is arranged in, the horizontal addload assembly includes: mutual type load plate, lateral support frame, the first side to load cylinder, the first linear slide rail, the second linear slide rail, the first loading frame, the second loading frame, the second side to load cylinder, the lateral load cylinder of third, third linear sliding rail, the 4th linear slide rail, third loading frame, the 4th loading frame and actuator.The present invention provides a kind of for large-scale earthwork horizontal plane variable loading system and its test method, the confining pressure test of large-scale cube of native hexahedron (predominantly horizontal plane) can be achieved, realize big displacement quantity load, there is no the loss of test soil in experimentation, ensure that a cube native quality does not change in experimentation, stable working state.
Description
Technical field
The present invention relates to geotechnical engineering indoor test technical fields, become more particularly to one kind for large-scale earthwork horizontal plane
Measure loading system and its test method.
Background technique
With the construction of large-scale building and hydraulic engineering, engineering body stressing influence range is gradually related to Thick Surface soil
Section, and stress also becomes increasingly complex, thus stability and later period groundwater change of the engineering in construction process cause
Foundation settlement deformation and seepage flow cause the factors such as earth body all easily to cause engineering problem.And summer rainfall leads to mountain
The natural calamities such as landslide and mud-rock flow occur for area, destroy cities and towns, village, block traffic, people's property loss and personnel is caused to lose
It dies.These are all the variation rule for not having the seepage characteristic and soil strength of scientific and reasonable estimation and the acquisition soil body in design and prospecting
Rule, and moisture content and stress state are then an important factor for influencing soil deformation and intensity.
Currently, existing soil strength measurement test has following problem: firstly, applying unequal lateral pressure, being easy to make
Soil sample, which generates distortion, causes test result deviation larger；Secondly, test soil sample size is all smaller, boundary effect is affected,
It is unable to actual response soil strength and seepage characteristic；It generates and interferes with each other when finally, all around a face pressure plate loading, stay in advance
There are enough mobile surpluses, carrying soil can be leaked out from gap, there is the loss of experiment soil in experimentation.
Summary of the invention
The present invention has designed and developed one kind for large-scale earthwork horizontal plane variable loading system and its test method, overcomes
The lateral application pressure of existing soil strength measurement test is uneven, has the loss of test soil in experimentation, cannot achieve big position
The confining pressure test of the shifting amount load completion earthwork, tests the lesser defect of soil sample size, makes it have and lateral application pressure can be achieved
Uniformly, there is no to test the loss of soil the confining pressure test, it can be achieved that the big displacement quantity load completion earthwork in experimentation, can carry out greatly
The characteristics of type earthwork is tested.
One kind is for large-scale earthwork horizontal plane variable loading system characterized by comprising
Vertical load assembly comprising: upper loading frame, upper load cylinder and top board, the one of the upper load cylinder
End is fixed in the middle part of the lower end of the upper loading frame, and the other end of the upper load cylinder is fixed on the top of the top board
Portion；
The lower part of the vertical load assembly is arranged in horizontal addload assembly, and the horizontal addload assembly includes: mutual type
Load plate, lateral support frame, the first side are to load cylinder, the first linear slide rail, the second linear slide rail, the first loading frame, second
Loading frame and actuator, the mutual type load plate are arranged on the lateral support frame bottom plate, and the mutual type load plate includes: the
One load plate, the second load plate, third load plate and the 4th load plate, first load plate are fixed on first linearly on one side
On one end of sliding rail, the other end of first linear slide rail is fixed on one end of first loading frame, and described first adds
The other end of carrier is fixed on first side on one end of load cylinder, and first side is solid to the other end of load cylinder
It is scheduled on the lateral support frame, the connection structure mode of second load plate, third load plate and the lateral support frame
Identical, one end of the 4th load plate and first load plate match relative to the another side for fixing the first linear slide rail
It closes, the 4th load plate is fixed on one side on one end of the second linear slide rail, and the other end of second linear slide rail is solid
Be scheduled on one end of second loading frame, the other end of second loading frame be fixed on supported by the actuator it is lateral
On support frame, one end of the third load plate is with the 4th load plate relative to the another side phase for fixing the second linear slide rail
Cooperation, one end of second load plate matches on one side with the third load plate, first load plate and described the
Two load plates match on one side, and the top board is arranged in the mutual type load plate.
Preferably, the horizontal addload assembly further include: the second side is to load cylinder, the lateral load cylinder of third,
Three linear slide rails, the 4th linear slide rail, third loading frame and the 4th loading frame, the third load plate are loaded relative to second
The another side that one end of plate matches is fixed on one end of third linear sliding rail, and the other end of the third linear sliding rail is fixed
On one end of the third loading frame, the other end of the third loading frame is fixed on the one of the lateral load cylinder of the third
On end, the other end of the lateral load cylinder of third is fixed on the lateral support frame, second load plate relative to
The another side matched with one end of the first load plate is fixed on one end of the 4th linear slide rail, the 4th linear slide rail
The other end is fixed on one end of the 4th loading frame, and it is lateral that the other end of the 4th linear slide rail is fixed on the third
On one end of load cylinder, the other end of the lateral load cylinder of third is fixed on the lateral support frame.
Preferably, the horizontal addload assembly further include: the first friction plate, the second friction plate, third friction plate, the 4th
Friction plate and bottom friction plate, first friction plate are arranged on one end of first load plate, first friction plate
It being matched on one side with second load plate, second friction plate is arranged on one end of second load plate, and described
Two friction plates match on one side with the third load plate, and one end of the third load plate is arranged in the third friction plate
On, the third friction plate is matched with the 4th load plate relative to the another side for fixing the second loading frame, and the described 4th
Friction plate is arranged on one end of the 4th load plate, and the 4th friction plate and first load plate are relative to fixing the
The another side of one loading frame matches, and the bottom friction plate is arranged between mutual type load plate and lateral support frame bottom plate, institute
Bottom friction plate is stated to be separately positioned in mutual type load plate.
Preferably, first friction plate, the second friction plate, third friction plate and the 4th friction plate are all made of polytetrafluoro
Ethylene material.
Preferably, the actuator includes four actuator, and first side includes four first sides to load cylinder
To load cylinder, first linear slide rail includes two first linear slide rails, and second linear slide rail includes two second
Linear slide rail.
Preferably, second side includes four second sides to load cylinder to load cylinder, and the third linear is sliding
Rail includes two third linear sliding rails, and the 4th linear slide rail includes two the 4th linear slide rails.
A kind of test method for the load of large-scale earthwork horizontal plane variable, which comprises the following steps:
Step 1: adjustment respectively the first side to load cylinder, the second side to load cylinder, the lateral load cylinder of third, work
Dynamic device makes first to rub to adjust separately the position of the first load plate, the second load plate, the 4th load plate and third load plate
Wiping board is in contact on one side with second load plate, makes being in contact on one side for the second friction plate and the third load plate, makes
Three friction plates are in contact with the 4th load plate relative to the another side for fixing the second loading frame, make the 4th friction plate with it is described
First load plate is in contact relative to the another side for fixing the first loading frame, so that mutually type load plate forms square state；
Step 2: forming in square in mutual type load plate and load appropriate experiment soil, loads to being higher by mutual type load plate
The top 50mm height on edge；
Step 3: keeping the position of the mutual type load plate of surrounding, load cylinder in adjustment, so as to adjust the position of top board,
Make top board behind the position just contacted with experiment soil and mutual type load plate, realizes that displacement is kept fixed；
Step 4: while to the first side to load cylinder, the second side to load cylinder, the lateral load cylinder of third, actuation
Device carries out equipotential control adjustment, realizes and loads to experiment soil to the heart, so that mutually each adjacent load plate in type load plate is realized
" mutual " font is mobile, is obtained by the pressure sensor and displacement sensor that are arranged in large-scale earthwork horizontal plane variable loading system
To earthwork confining pressure test data；
Step 5: load cylinder in adjustment, so as to adjust the position of top board, adjustment respectively the first side to load cylinder,
Second side is to load cylinder, the lateral load cylinder of third, actuator, to adjust separately the first load plate, the second load plate,
Test soil is removed in the position of four load plates and third load plate, the off-test of this large-scale earthwork horizontal plane variable load, can
Carry out next working cycles.
Detailed description of the invention
Fig. 1 is that the present invention is a kind of for large-scale earthwork horizontal plane variable loading system isometric side view.
Fig. 2 is a kind of top view for large-scale earthwork horizontal plane variable loading system horizontal addload assembly of the present invention.
Fig. 3 is that the present invention is a kind of for large-scale earthwork horizontal plane variable loading system first partial enlarged drawing.
Fig. 4 is that the present invention is a kind of for large-scale earthwork horizontal plane variable the second partial enlarged view of loading system.
Fig. 5 is that the present invention is a kind of for large-scale earthwork horizontal plane variable loading system third partial enlarged view.
Fig. 6 is that the present invention is a kind of for large-scale the 4th partial enlarged view of earthwork horizontal plane variable loading system.
Fig. 7 is that the present invention is a kind of for large-scale the 5th partial enlarged view of earthwork horizontal plane variable loading system.
Fig. 8 is that the present invention is a kind of for large-scale the 6th partial enlarged view of earthwork horizontal plane variable loading system.
Fig. 9 is that the present invention is a kind of for large-scale the 7th partial enlarged view of earthwork horizontal plane variable loading system.
Figure 10 is that the present invention is a kind of for large-scale the 8th partial enlarged view of earthwork horizontal plane variable loading system.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
As shown in Figure 1, the present invention provides one kind for large-scale earthwork horizontal plane variable loading system, comprising:
Vertical load assembly 1 comprising: upper loading frame 11, upper load cylinder 12 and top board 13, upper load cylinder 12
One end be bolted below loading frame 11 middle part, the other end of upper load cylinder 12 is bolted on
The top of top board 13, the vertical assembly 1 that loads realize whole fixation by upper loading frame 11, and top board 13 passes through upper load
The hydraulic loaded power realization that oil cylinder 12 is given moves up and down, to reach stable load effect.
Horizontal addload assembly 2 is as shown in Fig. 2, its lower part for being mounted on vertical load assembly 1, horizontal addload assembly 2 include:
Mutual type load plate 22, lateral support frame 21, lateral load cylinder 23, linear slide rail 24, loading frame 25 and actuator 26, mutual type add
Support plate 22 includes: the first load plate 221, the second load plate 222, third load plate 223 and the 4th load plate 224；Lateral load
Oil cylinder 23 includes: the first side to load cylinder 231, the second side to load cylinder 232, the lateral load cylinder 233 of third；To reduce
The displacement of influence of the frictional force to experiment, loading frame and mutual type load plate uses linear slide rail, and linear slide rail 24: the first is linearly sliding
Rail 241, the second linear slide rail 242, third linear sliding rail 243 and the 4th linear slide rail 244；Loading frame 25 includes: the first load
Frame 251, the second loading frame 252, third loading frame 253 and the 4th loading frame 254.
Mutual type load plate 22 is mounted on 21 bottom plate of lateral support frame, and the first load plate 221 is bolted on one side
On one end of the first linear slide rail 241, the other end of the first linear slide rail 241 is bolted on the first loading frame 251
One end on, the other end of the first loading frame 251 is bolted on first side on one end of load cylinder 231,
First side is bolted on lateral support frame 21 to the other end of load cylinder 231.The one side of 4th load plate 224
It is bolted on one end of the second linear slide rail 242, the other end of the second linear slide rail 242 is bolted on
On one end of two loading frames 252, the other end of the second loading frame 252 is bolted on the lateral branch supported by actuator 26
On support 21.Third load plate 223 is bolted on relative to the another side matched with one end of the second load plate 222
On one end of third linear sliding rail 243, the other end of third linear sliding rail 243 is bolted on third loading frame 223
On one end, the other end of third loading frame 223 is bolted on one end of the lateral load cylinder 233 of third, third side
It is bolted on lateral support frame 21 to the other end of load cylinder 233, the second load plate 222 adds relative to first
The another side that one end of support plate 221 matches is bolted on one end of the 4th linear slide rail 244, the 4th linear slide rail
244 other end is bolted on one end of the 4th loading frame 254, and the other end of the 4th loading frame 254 passes through bolt
It is fixed on one end of the lateral load cylinder 223 of third, the other end of the lateral load cylinder 223 of third is bolted on side
To on support frame 21.
Coefficient of friction is reduced between mutual two load plate of type load plate, friction plate 27 is inlayed in contact site between mutual type load plate,
Friction plate 27 includes: that the first friction plate 271, the second friction plate 272, third friction plate 273, the 4th friction plate 274 and bottom are rubbed
Wiping board, the first friction plate 271 is by being adhesively fixed on one end of the first load plate 221, the first friction plate 271 and the second load
Plate 222 matches on one side, and the second friction plate 272 is by being adhesively fixed on one end of the second load plate 222, the second friction plate
272 match on one side with third load plate 223, and third friction plate 273 is by being adhesively fixed on the one of third load plate 223
On end, third friction plate 273 is matched with the 4th load plate 224 relative to the another side for fixing the second loading frame 252, and the 4th rubs
Wiping board 274 is by being adhesively fixed on one end of the 4th load plate 224, the 4th friction plate 274 and first load plate 221
The another side for fixing the first loading frame 251 relative to bolt matches, and the bottom friction plate 275 is arranged in mutual type load plate 22
Between 21 bottom plate of lateral support frame, the bottom friction plate 275 is separately positioned in mutual type load plate 22.Friction plate 27 uses
Polytetrafluoroethylene (PTFE) material.For stress balance, the first linear slide rail 241 includes that two first linear slide rails 241 are uniformly mounted on
First load plate, about 221 two edge, the second linear slide rail 242 include that two second linear slide rails 242 are uniformly mounted on the
Four load plates, about 224 two edge, third linear sliding rail 243 include that two third linear sliding rails 243 are uniformly mounted on third
About 223 two edge of load plate, the 4th linear slide rail 244 are uniformly mounted on second including two second linear slide rails 244 and add
About 222 two edge of support plate.Uniformly pacify respectively including four first sides to load cylinder 231 to load cylinder 231 the first side
Mounted in 221 four corners of the first load plate, actuator 26 includes that four actuator 26 are uniformly mounted on 21 four corners of lateral support frame,
Second side is uniformly mounted on third load plate 221 4 to load cylinder 232 including four second sides to load cylinder 232 respectively
At angle, the lateral load cylinder 233 of third includes that the lateral load cylinder 233 of four thirds is uniformly mounted on the second load plate respectively
222 four corners.
A kind of test method for the load of large-scale earthwork horizontal plane variable, which comprises the following steps:
Step 1: the first side to load cylinder 231, the second side to load cylinder 232, third laterally loads oil respectively for adjustment
Cylinder 232 and actuator 26 add to adjust separately the first load plate 221, the second load plate 222, the 4th load plate 224 and third
The position of support plate 223 makes the first friction plate 271 be in contact on one side with second load plate 222, make the second friction plate 272 with
The third load plate 223 is in contact on one side, keeps third friction plate 273 and the 4th load plate 224 solid relative to bolt
The another side of fixed second loading frame 252 is in contact, and keeps the 4th friction plate 274 solid relative to bolt with first load plate 221
The another side of fixed first loading frame 251 is in contact, so that mutually type load plate 22 forms square state；
Step 2: forming in square in mutual type load plate 22 and load appropriate experiment soil 3, loads to being higher by mutual type load plate
The top 50mm height on upper edge；
Step 3: the position of the mutual type load plate 22 of surrounding, load cylinder 12 in adjustment, so as to adjust top board 13 are kept
Position moves down, and makes top board 13 behind the position just contacted with experiment soil 3 and mutual type load plate 22, top board 13
Displacement is kept fixed；
Step 4: while to the first side to load cylinder 231, the second side to load cylinder 232, the lateral load cylinder of third
233 carry out equipotential control adjustment, realize to the 3 pairs of heart loads of experiment soil, thus mutually each adjacent load plate in type load plate 22
Realize that " mutual " font is mobile, the controller in large-scale earthwork horizontal plane variable loading system passes through horizontal to the large-scale earthwork is mounted on
Pressure sensor and displacement sensor in the variable loading system of face send control instruction, corresponding data are detected, to obtain soil
Square confining pressure test data.
Step 5: load cylinder 12 in adjustment, the position so as to adjust top board 13 move up, the first side of adjustment difference
To load cylinder, the second side to load cylinder, the lateral load cylinder of third and actuator 26, to adjust separately the first load
Plate, the second load plate, the 4th load plate and third load plate position relative experimental soil 3 move backward, then remove test soil,
The off-test of this large-scale earthwork horizontal plane variable load, can carry out next working cycles.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art, can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (7)
1. one kind is for large-scale earthwork horizontal plane variable loading system characterized by comprising
Vertical load assembly comprising: one end of upper loading frame, upper load cylinder and top board, the upper load cylinder is solid
It is scheduled in the middle part of the lower end of the upper loading frame, the other end of the upper load cylinder is fixed on the top of the top board；
Horizontal addload assembly, is arranged in the lower part of the vertical load assembly, and the horizontal addload assembly includes: mutual type load
Plate, lateral support frame, the first side are loaded to load cylinder, the first linear slide rail, the second linear slide rail, the first loading frame, second
Frame and actuator, the mutual type load plate are arranged on the lateral support frame bottom plate, the mutual type load plate include: first plus
Support plate, the second load plate, third load plate and the 4th load plate, first load plate are fixed on the first linear slide rail on one side
One end on, the other end of first linear slide rail is fixed on one end of first loading frame, first loading frame
The other end be fixed on first side on one end of load cylinder, first side is fixed on to the other end of load cylinder
On the lateral support frame, second load plate, third load plate are identical as the connection structure mode of the lateral support frame,
One end of 4th load plate is matched with first load plate relative to the another side for fixing the first linear slide rail, described
4th load plate is fixed on one side on one end of the second linear slide rail, and the other end of second linear slide rail is fixed on described
On one end of second loading frame, the other end of second loading frame is fixed on the lateral support frame supported by the actuator
On, one end of the third load plate is matched with the 4th load plate relative to the another side for fixing the second linear slide rail,
One end of second load plate matches on one side with the third load plate, first load plate and second load
Plate matches on one side, and the top board is arranged in the mutual type load plate.
2. according to claim 1 a kind of for large-scale earthwork horizontal plane variable loading system, which is characterized in that the water
Flat load assembly further include: the second side to load cylinder, the lateral load cylinder of third, third linear sliding rail, the 4th linear slide rail,
Third loading frame and the 4th loading frame, the third load plate are solid relative to the another side matched with one end of the second load plate
It is scheduled on one end of third linear sliding rail, the other end of the third linear sliding rail is fixed on one end of the third loading frame
On, the other end of the third loading frame is fixed on one end of the lateral load cylinder of the third, and the third laterally loads
The other end of oil cylinder is fixed on the lateral support frame, and second load plate matches relative to one end of the first load plate
The another side of conjunction is fixed on one end of the 4th linear slide rail, and the other end of the 4th linear slide rail is fixed on the described 4th and adds
On one end of carrier, the other end of the 4th linear slide rail is fixed on one end of the lateral load cylinder of the third, described
The other end of the lateral load cylinder of third is fixed on the lateral support frame.
3. according to claim 3 a kind of for large-scale earthwork horizontal plane variable loading system, which is characterized in that the water
Flat load assembly further include: the first friction plate, the second friction plate, third friction plate, the 4th friction plate and bottom friction plate, it is described
First friction plate is arranged on one end of first load plate, and first friction plate and second load plate one side match
It closes, second friction plate is arranged on one end of second load plate, second friction plate and the third load plate
Match on one side, the third friction plate is arranged on one end of the third load plate, the third friction plate with it is described
4th load plate is matched relative to the another side for fixing the second loading frame, and the 4th friction plate setting is in the 4th load
On one end of plate, the 4th friction plate is matched with first load plate relative to the another side for fixing the first loading frame,
The bottom friction plate is arranged between mutual type load plate and lateral support frame bottom plate, and the bottom friction plate is separately positioned on mutually
In type load plate.
4. according to claim 3 a kind of for large-scale earthwork horizontal plane variable loading system, which is characterized in that described the
One friction plate, the second friction plate, third friction plate and the 4th friction plate are all made of polytetrafluoroethylene (PTFE) material.
5. according to claim 1 a kind of for large-scale earthwork horizontal plane variable loading system, which is characterized in that the work
Dynamic device includes four actuator, and first side includes that four first sides are linear to load cylinder, described first to load cylinder
Sliding rail includes two first linear slide rails, and second linear slide rail includes two second linear slide rails.
6. according to claim 2 a kind of for large-scale earthwork horizontal plane variable loading system, which is characterized in that described the
Two sides include four second sides to load cylinder to load cylinder, and the third linear sliding rail includes two third linear sliding rails,
4th linear slide rail includes two the 4th linear slide rails.
7. a kind of test method for the load of large-scale earthwork horizontal plane variable, which comprises the following steps:
Step 1: adjustment respectively the first side to load cylinder, the second side to load cylinder, the lateral load cylinder of third, actuator,
To adjust separately the position of the first load plate, the second load plate, the 4th load plate and third load plate, make the first friction plate with
Second load plate is in contact on one side, makes being in contact on one side for the second friction plate and the third load plate, makes third friction
Plate is in contact with the 4th load plate relative to the another side for fixing the second loading frame, adds the 4th friction plate with described first
Support plate is in contact relative to the another side for fixing the first loading frame, so that mutually type load plate forms square state；
Step 2: forming in square in mutual type load plate and load appropriate experiment soil, loads to being higher by edge in mutual type load plate
Top 50mm height；
Step 3: the position of the mutual type load plate of surrounding is kept, load cylinder makes in adjustment so as to adjust the position of top board
Pressing plate realizes that displacement is kept fixed behind the position just contacted with experiment soil and mutual type load plate；
Step 4: at the same to the first side to load cylinder, the second side to load cylinder, the lateral load cylinder of third, actuator into
The control adjustment of row equipotential, realizes and loads to experiment soil to the heart, so that mutually each adjacent load plate in type load plate realizes " mutual "
Font is mobile, obtains soil by the pressure sensor and displacement sensor that are arranged in large-scale earthwork horizontal plane variable loading system
Square confining pressure test data；
Step 5: load cylinder in adjustment adjusts the first side of difference to load cylinder, second so as to adjust the position of top board
Lateral load cylinder, the lateral load cylinder of third, actuator, thus adjust separately the first load plate, the second load plate, the 4th plus
Test soil is removed in the position of support plate and third load plate, and the off-test of this large-scale earthwork horizontal plane variable load can carry out
Next working cycles.
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| CN201811442209.8A CN109580369B (en) | 2018-11-29 | 2018-11-29 | Large-scale earthwork horizontal plane variable loading system and test method thereof |
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| CN201811442209.8A CN109580369B (en) | 2018-11-29 | 2018-11-29 | Large-scale earthwork horizontal plane variable loading system and test method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132719A (en) * | 2019-06-05 | 2019-08-16 | 青岛理工大学 | The geotechnological deformable large scale soil box structure of true triaxial test |
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| CN109580369B (en) | 2024-03-22 |
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