CN108871893A - A kind of method that scene Soil Direct Shear test prepares the soil body with soil body preparation device - Google Patents
A kind of method that scene Soil Direct Shear test prepares the soil body with soil body preparation device Download PDFInfo
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- CN108871893A CN108871893A CN201810651257.1A CN201810651257A CN108871893A CN 108871893 A CN108871893 A CN 108871893A CN 201810651257 A CN201810651257 A CN 201810651257A CN 108871893 A CN108871893 A CN 108871893A
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- soil body
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- cut
- soil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
-
- 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
Abstract
A kind of method that scene Soil Direct Shear test prepares the soil body with soil body preparation device, including component and charging assembly are prepared, prepare component：Including bottom frame, bottom plate, telescopic component and on cut box, telescopic component is hinged on bottom frame, and bottom plate is movably arranged in bottom frame, above cut box and be located in telescopic component, charging assembly：Including the first jack, force transmission rack, the fixed frame for being fixedly connected on telescopic component top, one end of the first jack is fixedly connected on fixed frame, and other end is resisted against on the end face of force transmission rack, and force transmission rack is resisted against far from one end of the first jack and cuts on box.
Description
The present invention is application number " 2016102125710 ", and patent name is that " soil body is used in a kind of scene Soil Direct Shear test
The divisional application of the device and method of preparation and direct shear test ".
Technical field
The present invention relates to a kind of methods that live Soil Direct Shear test prepares the soil body with soil body preparation device.
Background technique
In recent years, underground engineering and the related theoretical, design of slope project, construction have obtained in-depth study, geotechnical engineering
The deformation failure overwhelming majority be due to caused by failure by shear, the accurate shear strength parameter for measuring Rock And Soil is in rock
Critically important effect is played in geotechnological journey.In the test of test Rock And Soil shearing strength, direct shearing test is due to its operating method
Simply, definite principle and be widely used.
Due to the limitation of field test condition and funds, Rock And Soil direct shear test is still with the test of laboratory small size
It is main.It the advantage is that boundary condition is easy to control, can be obtained using a variety of methods such as direct shear test, triaxial test, torsion shear tests
Obtain the Rock And Soil shear strength parameter under different conditions；Its disadvantage is mainly manifested in following two aspects：First is that in sampling, fortune
During defeated, sample preparation, test, the states such as the integrality of sample, structural, moisture content are inevitably disturbed or destroy；
Second is that indoor specimen size is small, the authenticity and representativeness namely dimensional effect of test result are affected to a certain extent.Cause
This, the engineerings such as landslide, slope stability analysis in practice, laboratory test shear strength parameter obtained is difficult to directly answer
With.And in field direct shear test, specimen size is big and carries out at the scene, the heterogeneity and weak structural face of the soil body can be fought
The influence for cutting intensity more realistically reflects, and more tallies with the actual situation than the test of the indoor soil body.Therefore, in many cases, have
Necessity carries out live Soil Direct Shear test, to obtain the actual mechanics parameter of the soil body, and then instructs the design and construction of engineering.
Apparent difficult there are two but during large-scale Soil Direct Shear is tested at the scene at present, one is the examination of soil body standard
Sample prepares problem, and common scene Soil Direct Shear test sample size is generally：Length × width × height=500mm × 500mm ×
300mm.It is general first to excavate preparation one compared with the bulk specimen soil body in the test site of selection when field test（Length is big
In 500mm）, then use cuts the tools such as native knife and prepares sample by hand, but prepares geometric dimension, the angle of sample by hand
Degree, flatness are often nonstandard, are extremely difficult to the requirement of test specification, and then directly result in the discreteness of test result, influence
The order of accuarcy of test result；On the other hand, it is the Normal stress application problem of direct shear test, generallys use earth anchor, preloading etc.
Method, still, the embedded workload applied with preloading of earth anchor are very big, time cost and high labor cost, therefore, there is an urgent need to
A kind of more easily Normal stress applying method.
Summary of the invention
The object of the invention is that overcoming disadvantages mentioned above and shortcoming of the existing technology, a kind of scene soil is provided
The method that body direct shear test prepares the soil body with soil body preparation device can very easily be prepared direct shear test with the soil body,
After preparing at the scene to the soil body, soil body preparation device can be directly adapted as to experimental rig, and do corresponding staight scissors examination
It tests, structure is simple, and in-site installation convenient disassembly is readily transported, the produced on-site and teaching test suitable for the soil body.
To solve the above-mentioned problems, the technical scheme is that：A kind of scene Soil Direct Shear test soil body preparation dress
It sets, it is characterised in that：Including preparing component and charging assembly,
Prepare component：Including bottom frame, bottom plate, telescopic component and on cut box, telescopic component is hinged on bottom frame, bottom plate activity installation
In bottom frame, above cuts box and be located in telescopic component；
Charging assembly：Including the first jack, force transmission rack, the fixed frame for being fixedly connected on telescopic component top, the first jack
One end be fixedly connected on fixed frame, other end is resisted against on the end face of force transmission rack, and force transmission rack is far from the first jack
One end, which is resisted against, cuts on box.
Further, force transmission rack is " n " shape, is installed with a card slot respectively in two ends of force transmission rack.
Further, cutting box on described is the rectangular tube surrounded by four blocks of steel plates, is mounted with a plurality of cut in upper box lower end of cutting
Knife is installed with a wing plate at the upper edge for cutting box lower end two sides respectively, and the lower end for above cutting box is resisted against the upper surface of cutter
On, the outer wall for above cutting box is located in card slot.
Further, the bottom frame includes two strips, and two strips are located at the two sides of the soil body, the one of strip
Side is equipped with slideway, and multiple hinges are equipped on the end face of strip, and bottom plate is located in slideway, can slide in slideway, in strip
End face is equipped with multiple holdfast holes.
Further, the telescopic component includes more telescopic rods, and one end of telescopic rod is hinged in branch hinge, other end
It being socketed on fixed frame, the telescopic rod includes casing and screw rod, and tapped through hole is equipped in casing, and screw rod has two, point
It is not screwed onto the both ends of casing, is installed in the end of screw rod for the steel pipe hinged with branch, is equipped with one at the middle part of casing
Locking hole is socketed with extension bar in locking hole.
A kind of method that scene Soil Direct Shear test prepares sample with soil body preparation device, includes the following steps：
The first step excavates out a biggish foundation pit in the test site of selection, the initial soil body is reserved in the middle part of foundation pit, initially
The soil body all around all reserves certain space；
Two strips are respectively placed at the two sides of the initial soil body, and require the strip of initial soil body two sides mutual by second step
In parallel, strip is fixed on the bottom of foundation pit using holdfast towards the initial soil body by the one end of strip with slideway；
Each telescopic rod is hinged in the hinge of the branch on strip by third step；
Each telescopic rod is erected by the 4th step, in the upper end that fixed frame is fixedly mounted on to each telescopic rod；
In 5th step, the fixed frame for being fixedly connected with one end of the first jack, box is cut by and is placed on the upper surface of the soil body；
6th step is cut box by and is lifted, and each piece of cutter is caught in the supreme lower end for cutting box, force transmission rack is being cut to box card by
Firmly；
7th step, the first jack withstand force transmission rack far from one end of fixed frame, and the height of each telescopic rod is adjusted using extension bar
Degree, and apply certain pressure to box is above cut, after each piece cutter is uniformly embedded in the soil body, so that it may be parked in adjusting and stretch
Contracting bar；
8th step, by the first jack extend, to the soil body carry out normal direction cutting, after the completion of cutting, clear up be cut it is extra
Native slag, and cut box by and force transmission rack is removed from the soil body, the soil body above cut after the completion of box cutting is the finished product soil body；
Bottom plate is caught in the slideway to strip by the 9th step, and the side wall at foundation pit rear portion disposes overwood side, then in flitch and bottom
Upper third jack is disposed between plate, pedestal of the flitch as third jack extends third jack, and third jack pushes
Bottom plate, bottom plate carry out transverse cuts to the finished product soil body, are just the live soil body to the soil body after the cutting of the finished product soil body to bottom plate
The test soil body of direct shear test.
A kind of device of Soil Direct Shear test, including prepare component, pressure-applying unit, staight scissors component and measurement part；
Prepare component：Including bottom frame, bottom plate and telescopic component, telescopic component is hinged on bottom frame, and bottom plate is movably arranged on bottom frame
It is interior；The bottom frame includes two strips, and two strips are located at the two sides of the soil body, is equipped with slideway in the side of strip,
The end face of strip is equipped with multiple hinges, and bottom plate is located in slideway, can slide in slideway, is equipped on the end face of strip multiple
Holdfast hole；The telescopic component includes more telescopic rods, and one end of telescopic rod is hinged in branch hinge, and other end is socketed in fixation
On frame, the telescopic rod includes casing and screw rod, and tapped through hole is equipped in casing, and screw rod has two, is screwed onto set respectively
The both ends of pipe are installed with for the steel pipe hinged with branch in the end of screw rod, are equipped with a locking hole at the middle part of casing, are locking
Extension bar is socketed in tieholen.
Pressure-applying unit：It is second very heavy by the way that branch is hinged on the support frame of strip side, one end is in contact with support frame
Top；
Staight scissors component：Including be coated on outside the soil body on cut box and incision box, further include include the first jack, be fixedly connected on
One end of the fixed frame on telescopic component top, the first jack is fixedly connected on fixed frame, in incision box close to above cutting box
Ball is mounted on end face, further include be placed on cut in box, lower force transmitting board and upper force transmitting board on soil body top surface, in upper power transmission
Putting between plate and lower force transmitting board has roller bearing row, and one end of the separate fixed frame of the first jack is resisted against the end face of force transmitting board
On, the second jack is resisted against the side for cutting box far from one end of support frame, it is described on to cut box surrounded by four blocks of steel plates
Rectangular tube is installed with a wing plate at the upper edge for cutting box lower end two sides respectively, and the ball is placed on wing plate, under described
The shape size for cutting box is identical as box is above cut, and is installed with muti-piece support plate in the two sides of incision box, support plate is hinged on branch hinge
On；
Measure part：The first dial gauge of upper force transmitting board Normal Displacement amount is measured including one, box lateral displacement amount is cut in a measurement
Second dial gauge.
Further, support frame as described above is " n " font, and the both ends of support frame are respectively articulated in the branch hinge of soil body two sides.
Further, one piece of pressure gauge is separately installed on the first jack and the second jack.
A kind of Soil Direct Shear test method, it is characterised in that：
The first step is inserted in outside the finished product soil body and cuts box and incision box, and ball is filled in upper box and the incision box two sides of cutting
On the corresponding end face of wing plate, the support plate in the face of incision box two sides is hinged in branch hinge；
Telescopic rod and support frame are mounted on strip by second step, and by the second jack be tucked into support frame with above cut box it
Between gap in；
Third step, successively by lower force transmitting board, roller bearing row and upper force transmitting board be placed on the top surface of the soil body；
Fixed frame after erecting telescopic rod, is mounted on the top of telescopic rod by the 4th step, and the first jack is tucked into fixed frame
In gap between upper force transmitting board, the first jack, which is extended, applies Normal stress to the soil body, and observes the level of fixed frame；
5th step, the second jack of elongation apply lateral load to box is above cut, box are cut in promotion and is moved, the first dial gauge of observation,
The variation numerical value of second dial gauge and pressure gauge can stop testing, test after the soil body reaches code requirement shear displacemant
Test data is recorded and saved in journey；
The advantage of the invention is that：The present invention can easily prepare the soil body standard sample of Pass Test demand, avoid
Error caused by artificial sample preparation；
When testing at the scene, entire pilot system constitutes a closed system, can be by Normal stress and horizontal lotus by bottom frame
Idling turns to the internal force of loading device, without additional counterforce device；
Incision box is completely fixed during test, and above cutting box can only be translatable, and is not able to rotate, and therefore, shearing seam will not be because of sample
Cut it is swollen effect and mutate, to make the shear-deformable more uniform of sample；
Ball between upper incision box can effectively reduce friction effect, keep test result truer；Between upper and lower force transmitting board
Roller bearing row guarantees that normal pressure acts on sample middle always, avoids the wobbler action of Normal stress；
The configuration of the present invention is simple, in-site installation convenient disassembly, is readily transported, the produced on-site and teaching test suitable for the soil body.
Detailed description of the invention
Following further describes the present invention with reference to the drawings：
Fig. 1 is the schematic perspective view of preparation facilities of the present invention,
Fig. 2 is the schematic perspective view of experimental rig of the present invention,
Fig. 3 is the main view of preparation facilities of the present invention,
Fig. 4 is the side view of preparation facilities of the present invention,
Fig. 5 is the main view of experimental rig of the present invention,
Fig. 6 is the side view of experimental rig of the present invention,
Fig. 7 is the schematic top plan view of the present invention when in use, and shown in figure is to carry out transverse cuts to the finished product soil body,
Fig. 8 is the diagrammatic cross-section in Fig. 7 at A-A.
Specific embodiment
A kind of scene Soil Direct Shear test soil body preparation device, including component and charging assembly are prepared,
Prepare component：Including bottom frame, bottom plate 1, telescopic component and on cut box 5, telescopic component is hinged on bottom frame, the activity of bottom plate 1
It is mounted in bottom frame, above cuts box 5 and be located in telescopic component；
Charging assembly：Including the first jack 7, force transmission rack 6, the fixed frame 8 for being fixedly connected on telescopic component top, first is very heavy
The one end on top 7 is fixedly connected on fixed frame 8, and other end is resisted against on the end face of force transmission rack 6, and force transmission rack 6 is far from the 1000th
The one end on jin top 7, which is resisted against, cuts on box 5.
Further, force transmission rack 6 is " n " shape, is installed with a card slot 601 respectively in two ends of force transmission rack 6.
Further, cutting box 5 on described is the rectangular tube surrounded by four blocks of steel plates, it is upper cut 5 lower end of box be mounted with it is a plurality of
Cutter 4 is installed with a wing plate 501 at the upper edge for cutting 5 lower end two sides of box respectively, and the lower end for above cutting box 5 is resisted against cutter 4
Upper surface on, the outer wall for above cutting box 5 is located in card slot 601.
Further, the bottom frame includes two strips 2, and two strips 2 are located at the two sides of the soil body, in strip 2
Side be equipped with slideway 201, on the end face of strip 2 be equipped with multiple hinge 202, bottom plate 1 is located in slideway 201, can be in slideway
Sliding in 201, is equipped with multiple holdfast holes 203 on the end face of strip 2.
Further, the telescopic component includes more telescopic rods 3, and one end of telescopic rod 3 is hinged in branch hinge 202, separately
Outer one end is socketed on fixed frame 8, and the telescopic rod 3 includes casing 301 and screw rod 302, is led in casing 301 equipped with screw thread
Hole, screw rod 302 have two, are screwed onto the both ends of casing 301 respectively, are installed in the end of screw rod 302 for cutting with scissors 202 with branch
Hinged steel pipe 303 is equipped with a locking hole at the middle part of casing 301, extension bar 18 is socketed in locking hole.
A kind of method that scene 101 direct shear test of the soil body prepares sample with 101 preparation facilities of the soil body, includes the following steps：
The first step excavates out a biggish foundation pit 102 in the test site of selection, reserves initial soil at the middle part of foundation pit 102
Body 101, the initial soil body 101 all around all reserve certain space；
Second step, the two sides that two strips 2 are respectively placed to the initial soil body 101, and require the card of initial 101 two sides of the soil body
Item 2 is parallel to each other, the one end of strip 2 with slideway 201 is towards the initial soil body 101, and strip 2 is fixed on foundation pit using holdfast 21
102 bottom；
Each telescopic rod 3 is hinged in the hinge of the branch on strip 2 202 by third step；
Each telescopic rod 3 is erected by the 4th step, in the upper end that fixed frame 8 is fixedly mounted on to each telescopic rod 3；
In 5th step, the fixed frame 8 for being fixedly connected with one end of the first jack 7, box 5 is cut by and is placed on the upper of the soil body 101
On end face；
6th step is cut box 5 by and is lifted, and each piece of cutter 4 is caught in the supreme lower end for cutting box 5, force transmission rack 6 is being cut box by
5 block；
7th step, the first jack 7 withstand force transmission rack 6 far from one end of fixed frame 8, adjust each telescopic rod using extension bar 18
3 height, and apply certain pressure to box 5 is above cut, after each piece of cutter 4 is uniformly embedded in the soil body 101, so that it may
It is parked in and adjusts telescopic rod 3；
8th step extends the first jack 7, carries out normal direction cutting to the soil body 101, after the completion of cutting, clears up and is cut
Extra native slag, and box 5 is cut by and force transmission rack 6 is removed from the soil body 101, above cut the soil body 101 after the completion of box 5 is cut
For the finished product soil body 101；
Bottom plate 1 is caught in the slideway 201 on strip 2 by the 9th step, and the side wall at 102 rear portion of foundation pit disposes overwood side 20, then
Upper third jack 11, pedestal of the flitch 20 as third jack 11, elongation the 3000th are disposed between flitch 20 and bottom plate 1
Jin top 11, third jack 11 push bottom plate 1, and bottom plate 1 carries out transverse cuts to the finished product soil body 101, to bottom plate 1 to the finished product soil body
The soil body 101 after 101 cuttings is just the test soil body 101 of 101 direct shear test of the live soil body.
It, can be with after completing to the preparation of the soil body 101 with 101 preparation facilities of the soil body using live 101 direct shear test of the soil body
Preparation facilities is changed as experimental rig；
Installing pressure-applying unit, staight scissors component and measurement part on preparation facilities again just is live 101 direct shear test of soil body dress
It sets.
Pressure-applying unit：The support frame 12 of 2 side of strip, one end is hinged on by branch hinge 202 to be in contact with support frame 12
Second jack 11；
Staight scissors component：Including be coated on outside the soil body 101 on cut box 5 and incision box 10, in incision box 10 close to the end for above cutting box 5
Ball 9 is mounted on face, further include be placed on cut in box 5, lower force transmitting board 13 and upper force transmitting board 15 on 101 top surface of the soil body,
Putting between upper force transmitting board 15 and lower force transmitting board 13 has roller bearing to arrange 14, one end of the separate fixed frame 8 of the first jack 7 against
On the end face of upper force transmitting board 15, the second jack 11 is resisted against the side for cutting box 5 far from one end of support frame 12, under described
The shape size for cutting box 10 is identical as box 5 is above cut, and is installed with muti-piece support plate 110 in the two sides of incision box, support plate 110 is cut with scissors
It connects in branch hinge 202；
Measure part：Box lateral displacement is cut in the first dial gauge 17, one measurement for measuring upper 15 Normal Displacement amount of force transmitting board including one
Second dial gauge 171 of amount.
Further, support frame as described above 12 is " n " font, and the both ends of support frame 12 are respectively articulated with the branch of 101 two sides of the soil body
In hinge 202.
Further, one piece of pressure gauge 170 is separately installed on the first jack 7 and the second jack 11.
A kind of scene Soil Direct Shear test method, includes the following steps：
The first step is inserted in outside the finished product soil body 101 and cuts box 5 and incision box 10, and ball 9 is filled in and cuts box 5 and incision upper
On the corresponding end face of wing plate 501 of 10 two sides of box, the support plate 110 in the face of 10 two sides of incision box is hinged in branch hinge 202；
Telescopic rod 3 and support frame 12 are mounted on strip 2 by second step, and by the second jack 11 be tucked into support frame 12 with
On cut in gap between box 5；
Third step, successively by lower force transmitting board 13, roller bearing row 14 and upper force transmitting board 15 be placed on the top surface of the soil body 101；
Fixed frame 8 after erecting telescopic rod 3, is mounted on the top of telescopic rod 3 by the 4th step, the first jack 7 is tucked into solid
Determine in the gap between frame 8 and upper force transmitting board 15, the elongation of the first jack 7 applies Normal stress to the soil body 101, and observes fixation
The level of frame 8；
5th step, the second jack 11 of elongation apply lateral load to box 5 is above cut, the movement of box 5, observation the 100th are cut in promotion
The variation numerical value for dividing table 17, the second dial gauge 171 and pressure gauge 170, after the soil body 101 reaches code requirement shear displacemant
Stop test, test data is recorded and saved during test；
The present invention is the instrument based on Coulomb block effect test soil shear strength test, main by above cutting box 5 and incision box 10
Between generate horizontal displacement reach scene the soil body 101 is sheared.When test, the soil body 101, which is loaded into, cuts box 5 and incision box
Among 10, above cuts and be connected between box 5 and incision box 10 by ball 9；Incision box 10 is hinged on bottom frame by support plate 110
On, and bottom surface is contacted with bottom plate 1, the top for above cutting box 5, which is put, upper force transmitting board 15 and lower force transmitting board 13 and roller bearing row 14.
The first dial gauge 17 of measurement normal direction displacement is placed on upper force transmitting board 15.On cut box 5 can be in horizontal direction hydraulic jack
The horizontal sliding between ball 9 and roller bearing row 14 under driving, to achieve the effect that shear the soil body.Horizontal thrust can be by connecting
Pressure gauge 170 on the second jack 11 is read, and horizontal displacement is measured by the second dial gauge 171；Normal pressure can be by
Pressure gauge 170 on one jack is read.During the whole test process, dial gauge is recorded（Or displacement sensor）And jack
The data of pressure gauge, until the relative displacement between upper incision box 10 reaches code requirement, off-test at this time.
The present invention can easily prepare the soil body standard sample of Pass Test demand, caused by avoiding artificial sample preparation
Error；When testing at the scene, entire pilot system constitutes a closed system, can be by Normal stress and horizontal lotus by bottom frame
Idling turns to the internal force of loading device, without additional counterforce device；Incision box is completely fixed during test, above cuts 5, box
It can be translatable, not be able to rotate, therefore, shearing seam will not mutate because of the cutting swollen effect of sample, to make the shearing of sample
It deforms more uniform；On the ball 9 cut between box 5 and incision box 10 can effectively reduce friction effect, keep test result trueer
It is real；14 guarantee normal pressure of roller bearing row between upper force transmitting board 15 and lower force transmitting board 13 acts on soil body middle always, avoids
The wobbler action of Normal stress；The present invention, structure is simple, and in-site installation convenient disassembly is readily transported, the scene suitable for the soil body
Production and teaching test.
Claims (1)
1. a kind of method that scene Soil Direct Shear test prepares the soil body with soil body preparation device, it is characterised in that：Including live soil
Body direct shear test soil body preparation device, the scene Soil Direct Shear test soil body preparation device includes preparing component and load
Component,
Prepare component：Including bottom frame, bottom plate（1）, telescopic component and on cut box（5）, telescopic component is hinged on bottom frame, bottom plate
（1）It is movably arranged in bottom frame, above cuts box（5）In telescopic component；
Charging assembly：Including the first jack（7）, force transmission rack（6）, be fixedly connected on the fixed frame on telescopic component top（8）, the
One jack（7）One end be fixedly connected on fixed frame（8）On, other end is resisted against force transmission rack（6）End face on, force transmission rack
（6）Far from the first jack（7）One end be resisted against and cut box（5）On；
Force transmission rack（6）For " n " shape, in force transmission rack（6）Two ends be installed with a card slot respectively（601）；
Box is cut on described（5）It is the rectangular tube surrounded by four blocks of steel plates, cuts box upper（5）Lower end is mounted with a plurality of cutter（4）,
On cut box（5）The edge of lower end two sides is installed with a wing plate respectively（501）, above cut box（5）Lower end be resisted against cutter（4）
Upper surface on, above cut box（5）Outer wall be located at card slot（601）It is interior；
The bottom frame includes two strips（2）, and two strips（2）The two sides of the soil body are located at, in strip（2）Side set
There is slideway（201）, in strip（2）End face be equipped with multiple hinge（202）, bottom plate（1）Positioned at slideway（201）It is interior, it can be in cunning
Road（201）Interior sliding, in strip（2）End face be equipped with multiple holdfast holes（203）；
The telescopic component includes more telescopic rods（3）, telescopic rod（3）One end be hinged on branch hinge（202）On, other end set
It connects in fixed frame（8）On, the telescopic rod（3）Including casing（301）And screw rod（302）, in casing（301）It is interior logical equipped with screw thread
Hole, screw rod（302）With two, it is screwed onto casing respectively（301）Both ends, in screw rod（302）End be installed with for
Branch hinge（202）Hinged steel pipe（303）, in casing（301）Middle part be equipped with a locking hole, extension bar is socketed in locking hole
（18）；
A kind of method that the test of use site Soil Direct Shear prepares the soil body with soil body preparation device, includes the following steps：
The first step excavates out a biggish foundation pit in the test site of selection（102）, in foundation pit（102）Middle part reserve just
The beginning soil body（101）, the initial soil body（101）All around all reserve certain space；
Second step, by two strips（2）It is respectively placed at the initial soil body（101）Two sides, and require initial soil body two sides
Strip（2）It is parallel to each other, strip（2）With slideway（201）One end towards the initial soil body（101）, use holdfast（21）It will card
Item（2）It is fixed on foundation pit（102）Bottom；
Third step, by each telescopic rod（3）It is hinged on strip（2）On branch hinge（202）On；
4th step, by each telescopic rod（3）It erects and, by fixed frame（8）It is fixedly mounted on each telescopic rod（3）Upper end；
5th step, by the first jack（7）The fixed frame that is fixedly connected of one end（8）On, box is cut by（5）It is placed on the soil body
（101）Upper surface on；
6th step cuts box by（5）It lifts, by each piece of cutter（4）It is caught in and supreme cuts box（5）Lower end, by force transmission rack（6）
Box is cut by（5）It blocks；
7th step, the first jack（7）Far from fixed frame（8）One end withstand force transmission rack（6）, utilize extension bar（18）It adjusts each
A telescopic rod（3）Height, and to above cutting box（5）Apply certain pressure, to each piece of cutter（4）Uniformly it is embedded in the soil body
（101）In after, so that it may be parked in adjusting telescopic rod（3）；
8th step, by the first jack（7）Elongation, to the soil body（101）Normal direction cutting is carried out, after the completion of cutting, cleaning is cut
Under extra native slag, and box is cut by（5）And force transmission rack（6）From the soil body（101）On remove, above cut box（5）It has cut
The soil body after（101）For the finished product soil body；
9th step, by bottom plate（1）It is caught in strip（2）On slideway（201）It is interior, in foundation pit（102）In the side wall disposition at rear portion
Flitch（20）, then in flitch（20）And bottom plate（1）Between dispose upper third jack（11）, flitch（20）As third jack
（11）Pedestal, extend third jack（11）, third jack（11）Push bottom plate（1）, bottom plate（1）The finished product soil body is carried out
Transverse cuts, to bottom plate（1）To the soil body after the cutting of the finished product soil body（101）It is just the test of live Soil Direct Shear test
The soil body.
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| CN114739729A (en) * | 2022-04-29 | 2022-07-12 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for rapidly obtaining undisturbed soil samples in batches |
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| CN106525588B (en) * | 2016-12-01 | 2023-06-23 | 华侨大学 | Multi-deformation-mode self-adaptive extensometer |
| CN107942031A (en) * | 2017-10-18 | 2018-04-20 | 华南理工大学 | The simulation experiment method of soil body weather alternating and staight scissors |
| CN107817173B (en) * | 2017-10-31 | 2023-10-20 | 华侨大学 | In-situ diagonal shear test system for raw soil wall and application method thereof |
| CN110455713B (en) * | 2019-09-09 | 2024-03-22 | 南京林业大学 | Pressurized single-interface micro-distance rotary cutting testing device and testing method |
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| CN105890947A (en) | 2016-08-24 |
| CN105890947B (en) | 2018-07-31 |
| CN108871893B (en) | 2021-01-26 |
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