CN109580387A - A kind of soil layer interface shear testing maschine and soil layer interface shearing test case - Google Patents
A kind of soil layer interface shear testing maschine and soil layer interface shearing test case Download PDFInfo
- Publication number
- CN109580387A CN109580387A CN201910044843.4A CN201910044843A CN109580387A CN 109580387 A CN109580387 A CN 109580387A CN 201910044843 A CN201910044843 A CN 201910044843A CN 109580387 A CN109580387 A CN 109580387A
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- China
- Prior art keywords
- soil layer
- box
- lower box
- upper box
- layer interface
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Classifications
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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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- 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
The present invention relates to a kind of soil layer interface shear testing maschine and soil layer interface shearing test casees, soil layer interface shearing test case includes upper box and lower box, lower box has for the flaps with the test soil layer CONTACT WITH FRICTION in upper box for the inner cavity of filling test soil layer or lower box with mutually passing to upper box, the open upper end of upper box, it is provided on the power output end of vertical loading mechanism for the top board to the test soil layer pressure in upper box, the lower part guide frame of guide direction transversely is provided between lower box and device frame, the upper guide structure of guide direction transversely is provided between upper box and lower box, the power output end of lateral loading mechanism and the lower box are sequentially connected.The present invention provides one kind can be to soil layer interface shearing test case used in the soil layer interface shear testing maschine that soil layer interface shearing force is tested and the soil layer interface shear testing maschine.
Description
Technical field
The present invention relates to for the soil layer interface shear testing maschine and soil layer interface shearing test to soil layer shearing test
Case.
Background technique
In building engineering field, it will usually the situation for carrying out engineering construction and processing in soil layer is encountered, such as side slope and base
Cheat engineering, pile foundation engineering, plate brad supporting and Metro Tunnel etc..Engineering practice in soil layer, in soil layer or soil layer and soil
Interfacial shear force test between shearing force and the structures such as soil layer and soil nailing, stake, tunnel between layer is with cognition concerning whole
The economical rationality and safety and stability of a engineering design.Lacking at present can be to the soil layer that soil layer interface shearing force is tested
Interface shearing testing machine.
Summary of the invention
The purpose of the present invention is to provide a kind of examination can be sheared to the soil layer interface that soil layer interface shearing force is tested
Test machine；The object of the invention is also to provide soil layer interface shearing tests used in a kind of soil layer interface shear testing maschine
Case.
In order to solve the above technical problems, the technical solution of soil layer interface shear testing maschine is as follows in the present invention:
A kind of soil layer interface shear testing maschine, including soil layer interface shearing test case and loading device, loading device include device
Frame is provided with vertical loading mechanism and lateral loading mechanism on device frame, and soil layer interface shearing test case includes lower box and use
In the upper box of filling test soil layer, lower box has inner cavity or the nowel mutually passed to upper box for filling test soil layer
Body has for the flaps with the test soil layer CONTACT WITH FRICTION in upper box, the open upper end of upper box, vertical loading mechanism
Power output end on be provided with for in upper box test soil layer pressure top board, set between lower box and device frame
It is equipped with the lower part guide frame of guide direction transversely, the top of guide direction transversely is provided between upper box and lower box
Guide frame, the power output end of lateral loading mechanism and the lower box are sequentially connected.
The upper box fixed structure for fixing the upper box is provided on device frame.
Lateral loading mechanism is connected with the right end of lower box, and the left end of upper box is provided with upper box connecting plate, upper box
Fixed structure includes the standing screw that the axis being fixedly connected with the upper box connecting plate extends in left-right direction, standing screw
Left end be connected with device frame by bolt.
The right end of lower box is provided with horizontally disposed lower box connecting plate, and the power output end of lateral loading mechanism has
Vertically arranged gear pin is provided with the pin shaft hole fitted through for gear pin on lower box connecting plate, gear pin
Height is greater than or equal to the height of pin shaft hole.
Lateral loading mechanism includes the adjustable laterally load cylinder of upper-lower height.
Evagination is provided with lower box support and turns edge on the front and rear sides face of lower box, evagination on the front and rear sides face of upper box
Upper box support is provided with to turn edge, upper guide structure include it is convex be fixed on lower box support turn edge on public track,
The corresponding side surface arranged for interval of public track and lower box, upper guide structure further include set on upper box support turn edge downside with
Female track groove of male track adaptation.
The technical solution of soil layer interface shearing case in the present invention are as follows:
A kind of soil layer interface shearing test case of soil layer interface shear testing maschine, including lower box and for filling test soil layer
Upper box, lower box are used for and top box with mutually being passed to upper box for the inner cavity of filling test soil layer or lower box to have
The flaps of test soil layer CONTACT WITH FRICTION in body, the open upper end of upper box is for the top board on corresponding vertical loading mechanism
Pass through, the lower part guide frame of guide direction transversely is provided between lower box and device frame, between upper box and lower box
It is provided with the upper guide structure of guide direction transversely.
Lateral loading mechanism is connected with the right end of lower box, and the left end of upper box is provided with upper box connecting plate, upper box
Fixed structure includes the standing screw that the axis being fixedly connected with the upper box connecting plate extends in left-right direction, standing screw
Left end be connected with device frame by bolt.
The right end of lower box is provided with horizontally disposed lower box connecting plate, is provided on lower box connecting plate for trundle
The pin shaft hole that axis fits through, the height of gear pin are greater than or equal to the height of pin shaft hole.
Evagination is provided with lower box support and turns edge on the front and rear sides face of lower box, evagination on the front and rear sides face of upper box
Upper box support is provided with to turn edge, upper guide structure include it is convex be fixed on lower box support turn edge on public track,
The corresponding side surface arranged for interval of public track and lower box, upper guide structure further include set on upper box support turn edge downside with
Female track groove of male track adaptation.
The invention has the benefit that the filling test soil layer in upper box passes through the upper of vertical loading mechanism when test
Pressing plate test soil layer intracorporal to top box applies vertical load to simulate earth pressure, by lateral loading mechanism to lower box cross
To load, when lower box is mobile relative to upper box, the loading force of lateral loading mechanism at this time just embodies soil layer interface shearing
Power, if filling test soil layer in lower box, which can measure the interface shearing between soil layer and soil layer
Power；If lower box have contact with top box in vivo studies soil layer friction flaps, that flaps just simulate structural plane and
The contact of soil layer can directly test the interfacial shear force between structural plane and corresponding soil layer.Lower part guide frame is protected
The motion track of card lower box is to move horizontally, and upper guide structure can guarantee during the loading process, to avoid upper box phase
Lower box is tilted, extra frictional force is generated and influences the measurement of soil layer interface shearing force.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment 1 of soil layer interface shear testing maschine in the present invention；
Fig. 2 is the structural schematic diagram of soil layer interface shearing case in Fig. 1；
Fig. 3 is the perspective view of Fig. 2；
Fig. 4 is the structural schematic diagram of lower box in the embodiment 2 of soil layer interface shear testing maschine in the present invention.
Specific embodiment
A kind of embodiment 1 of soil layer interface shear testing maschine is as shown in Fig. 1 ~ 3: including soil layer interface shearing test case and plus
It carries and sets, loading device includes device frame, and device frame includes the spaced apart two groups of columns in left and right, and the top of column is provided with top
Portion's crossbeam 2, the bottom end of column are provided with base cross members 13.Vertical loading mechanism, vertical loading mechanism are provided in top cross-bar
Including two or so spaced apart vertical load cylinders 1, it is connected with top board 30 on the piston rod of two vertical load cylinders 1, is erected
The first force snesor 4 is provided between the piston rod and top board of load cylinder.Guide direction edge is provided on the column 9 on right side
Vertically extending vertical guide 17, guiding movement is equipped with lateral loading mechanism in vertical guide 17, and lateral loading mechanism includes
Horizontally disposed laterally load cylinder 18 can move up and down the position that adjustment laterally loads cylinder by the setting of vertical guide 17.
It laterally is connected with vertically arranged gear pin 8 on piston rod, that is, power output end of load cylinder, laterally loads cylinder
Piston rod and gear pin between be provided with the second force snesor 16, in the present embodiment the first, second force snesor be wheel
Spoke force snesor.Soil layer interface shearing test case includes the upper box 10 and lower box 20 for filling test soil layer, top box
The open upper end of body 10, top board 30 can pass through vertical to carry out to the intracorporal test soil layer of top box from the open ports of upper box
Pressurization, upper box are less than lower box, thereby may be ensured that the section of shear is constant.It is provided on device frame for fixing upper box
Upper box fixed structure, the left end of upper box are provided with upper box connecting plate 12, and upper box fixed structure includes connecting with upper box
The standing screw 11 that the axis that fishplate bar is fixedly connected extends in left-right direction, the left end of standing screw 11 pass through bolt and left side
Column is connected, and the right end and upper box connecting plate of standing screw are bolted to connection (or being fixedly connected by welding),
Fixation by upper box fixed structure to upper box, it is ensured that when lateral loading mechanism loads lower box, upper box phase
Be to lower box it is fixed, in addition the gravity of upper box is undertaken by device frame, and upper box 10 will not generate lower box 20
Pressure, therefore the frictional force between upper box 10 and lower box 20 can be ignored, and can more really measure soil layer interface in this way
Shearing force.The right end of lower box is provided with horizontally disposed lower box connecting plate 19, is provided on lower box connecting plate 19 for passing
The pin shaft hole 21 that dynamic pin shaft 8 fits through, the height of gear pin 8 are greater than the height of pin shaft hole 21.
Be provided with the lower part guide frame of guide direction transversely between lower box and device frame, upper box and lower box it
Between be provided with the upper guide structure of guide direction transversely.In the present embodiment, evagination is arranged on the front and rear sides face of lower box
There is lower box support to turn edge 21, evagination is provided with upper box support and turns edge 20 on the front and rear sides face of upper box, top guiding knot
Structure include it is convex be fixed on lower box support turn edge on public track 6, common rail road is made of I-steel, public track and nowel
The corresponding side surface arranged for interval of body, upper guide structure further include being adapted on the downside of turning edge set on upper box support with public track
Female track groove 5 turns edge upper using public track structure in lower box support, the corresponding side surface arranged for interval of public track and lower box,
In this way under the pressurization of top board, even if thering is gap of the part test soil layer between upper box, lower box to overflow, also not
It can enter between male track and female track groove, not will cause the abrasion of track and interorbital frictional resistance is caused to become larger.22 table of figure middle term
Show the inner cavity of upper box；Item 23 indicates the inner cavity of lower boxes, and the inner cavity of lower box is communicated with the inner cavity of upper box；Item 3 indicates left
The column of side；Item 9 indicates the column on right side.Lower part guide frame includes the fixed plate being fixed in base cross members 13, fixed plate
On be fixed with the cross slide way 15 that guide direction extends in left-right direction, be fixed on lower box and 15 guiding movement of cross slide way
The track groove 14 of cooperation.Soil layer interface shear testing maschine further includes the vertical displacement sensor for detecting top board vertical displacement
Device and horizontal displacement sensors device for detecting lower box horizontal displacement, by the detection of vertical displacement sensor device
The displacement of pressing plate detects the displacement of lower box by horizontal displacement sensors device to control the pressure amount to soil layer, to measure
The deflection of soil layer.
In use, the filling test soil layer in upper box and lower box, is fixed the left end of upper box by standing screw
In on the column in left side, the vertical cylinder that loads drives top board downlink, and top board applies vertical carry to the test soil layer in upper box
Lotus, to simulate true earth pressure, different force value can simulate the earth pressure of different depth, by laterally loading cylinder pair
Lower box laterally loads, when lower box is mobile, since the frictional force between upper box and lower box can be ignored,
The power that second force snesor measures is Soil Interface shearing force, according to the cabinet of different model, can also adjust laterally load cylinder
Height therewith adapt to.In other embodiments of the invention: vertical loading mechanism, lateral loading mechanism loading force can also
To be realized by electric pushrod.
A kind of embodiment 2 of soil layer interface shear testing maschine is as shown in Figure 4: embodiment 2 unlike the first embodiment, under
The inner cavity of cabinet and the inner cavity of upper box are obstructed, and the upper end of upper box 20 has for connecing with the test soil layer friction in upper box
The flaps 35 of touching simulates the peripheral structure body in soil nailing, stake, tunnel etc. by the way that friction lines is arranged in flaps, by structure
The cylindrical contact face that body is contacted with soil layer is converted to the plane contact of flaps, by lateral loading mechanism to the transverse direction of lower box
Load is tested come the shearing force between the soil layer interface that contacts to flaps.The flaps can remove replacement, when
When flaps is replaced, the adjustment of different resistances may be implemented, certain flaps can also be removed completely, at this time lower box
Inner cavity communicated with upper box, may be implemented between soil layer and soil layer interfacial shear force test.Figure middle term 19 indicates lower box
Connecting plate；Item 6 indicates the public track of upper guide structures.
The implementation of soil layer interface shearing case is for example shown in Fig. 1 ~ 4: soil layer interface shears the specific structure and above-mentioned each soil of case
Shear testing maschine soil layer interface shearing case as described in the examples in bed boundary is identical, and this will not be detailed here.
Claims (10)
1. a kind of soil layer interface shear testing maschine, it is characterised in that: including soil layer interface shearing test case and loading device, load
Device includes device frame, and vertical loading mechanism and lateral loading mechanism, soil layer interface shearing test luggage are provided on device frame
Lower box and the upper box for filling test soil layer are included, lower box, which has, mutually to be passed to upper box for filling test soil layer
Inner cavity or lower box have for the flaps with the test soil layer CONTACT WITH FRICTION in upper box, the open upper end of upper box,
Be provided on the power output end of vertical loading mechanism for the top board to the test soil layer pressure in upper box, lower box with
It is provided with the lower part guide frame of guide direction transversely between device frame, guide direction is provided between upper box and lower box
Upper guide structure transversely, the power output end of lateral loading mechanism and the lower box are sequentially connected.
2. soil layer interface shear testing maschine according to claim 1, it is characterised in that: be provided on device frame for fixing
The upper box fixed structure of the upper box.
3. soil layer interface shear testing maschine according to claim 2, it is characterised in that: lateral loading mechanism and lower box
Right end is connected, and the left end of upper box is provided with upper box connecting plate, and upper box fixed structure includes and the upper box connecting plate
The left end of the standing screw that the axis being fixedly connected extends in left-right direction, standing screw is connected by bolt with device frame.
4. soil layer interface shear testing maschine according to claim 1, it is characterised in that: the right end of lower box is provided with level
The lower box connecting plate of arrangement, the power output end of lateral loading mechanism have vertically arranged gear pin, lower box connection
The pin shaft hole fitted through for gear pin is provided on plate, the height of gear pin is greater than or equal to the height of pin shaft hole.
5. soil layer interface shearing test case according to claim 1, it is characterised in that: lateral loading mechanism includes high up and down
Spend adjustable laterally load cylinder.
6. soil layer interface shearing test case described in any one according to claim 1 ~ 5, it is characterised in that: the front and back of lower box
Evagination is provided with lower box support and turns edge on two sides, and evagination is provided with upper box support and turns on the front and rear sides face of upper box
Edge, upper guide structure include it is convex be fixed on lower box support turn edge on public track, pair of public track and lower box
Side arranged for interval is answered, upper guide structure further includes the female track being adapted to male track on the downside of turning edge set on upper box support
Slot.
7. a kind of soil layer interface shearing test case of soil layer interface shear testing maschine, it is characterised in that: including lower box and be used for
The upper box of filling test soil layer, lower box have inner cavity or the lower box mutually passed to upper box for filling test soil layer
With for the flaps with the test soil layer CONTACT WITH FRICTION in upper box, the open upper end of upper box is for corresponding vertical load
Top board in mechanism passes through, and the lower part guide frame of guide direction transversely, top box are provided between lower box and device frame
The upper guide structure of guide direction transversely is provided between body and lower box.
8. soil layer interface shearing test case according to claim 7, it is characterised in that: lateral loading mechanism and lower box
Right end is connected, and the left end of upper box is provided with upper box connecting plate, and upper box fixed structure includes and the upper box connecting plate
The left end of the standing screw that the axis being fixedly connected extends in left-right direction, standing screw is connected by bolt with device frame.
9. soil layer interface shearing test case according to claim 7, it is characterised in that: the right end of lower box is provided with level
The lower box connecting plate of arrangement is provided with the pin shaft hole fitted through for gear pin on lower box connecting plate, gear pin
Height is greater than or equal to the height of pin shaft hole.
10. according to soil layer interface shearing test case described in claim 7 ~ 9 any one, it is characterised in that: before lower box
Afterwards on two sides evagination be provided with lower box support turn edge, on the front and rear sides face of upper box evagination be provided with upper box support turn over
Edge, upper guide structure include it is convex be fixed on lower box support turn edge on public track, pair of public track and lower box
Side arranged for interval is answered, upper guide structure further includes the female track being adapted to male track on the downside of turning edge set on upper box support
Slot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044843.4A CN109580387A (en) | 2019-01-17 | 2019-01-17 | A kind of soil layer interface shear testing maschine and soil layer interface shearing test case |
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| CN201910044843.4A CN109580387A (en) | 2019-01-17 | 2019-01-17 | A kind of soil layer interface shear testing maschine and soil layer interface shearing test case |
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Cited By (8)
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| CN110031337A (en) * | 2019-04-28 | 2019-07-19 | 南京林业大学 | Roadbed filling and Earthworking reinforced bar interface mechanics characteristic detecting apparatus and measuring method |
| CN110132759A (en) * | 2019-05-29 | 2019-08-16 | 中建八局轨道交通建设有限公司 | The shearing test device and its detection method of pre-buried channel flow on shield duct piece |
| CN110220804A (en) * | 2019-06-17 | 2019-09-10 | 河南交通职业技术学院 | A kind of pressure-shear test machine |
| CN112683656A (en) * | 2021-03-02 | 2021-04-20 | 郑州大学 | Soil nail drawing interface shear test device and shear test method |
| CN112857782A (en) * | 2021-03-04 | 2021-05-28 | 郑州大学 | Soil nail stress simulation test device, soil nail and test method |
| CN112903478A (en) * | 2021-03-02 | 2021-06-04 | 郑州大学 | Unsaturated soil and structure interface shear matrix suction testing device and testing method |
| CN116046564A (en) * | 2022-11-16 | 2023-05-02 | 河海大学 | Bidirectional loading shear tester for measuring interface contact characteristics and test method |
| CN110220804B (en) * | 2019-06-17 | 2024-05-03 | 河南交通职业技术学院 | Pressure shear testing machine |
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| CN112903478B (en) * | 2021-03-02 | 2023-05-09 | 郑州大学 | Unsaturated soil and structure interface shear matrix suction testing device and testing method |
| CN112903478A (en) * | 2021-03-02 | 2021-06-04 | 郑州大学 | Unsaturated soil and structure interface shear matrix suction testing device and testing method |
| CN112857782B (en) * | 2021-03-04 | 2022-12-13 | 郑州大学 | Soil nail stress simulation test device, soil nail and test method |
| CN112857782A (en) * | 2021-03-04 | 2021-05-28 | 郑州大学 | Soil nail stress simulation test device, soil nail and test method |
| CN116046564A (en) * | 2022-11-16 | 2023-05-02 | 河海大学 | Bidirectional loading shear tester for measuring interface contact characteristics and test method |
| CN116046564B (en) * | 2022-11-16 | 2023-08-18 | 河海大学 | Bidirectional loading shear tester for measuring interface contact characteristics and test method |
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