CN105865927B - A kind of double-decked slope simulation test device for stability and method - Google Patents
A kind of double-decked slope simulation test device for stability and method Download PDFInfo
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- CN105865927B CN105865927B CN201610179288.2A CN201610179288A CN105865927B CN 105865927 B CN105865927 B CN 105865927B CN 201610179288 A CN201610179288 A CN 201610179288A CN 105865927 B CN105865927 B CN 105865927B
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- slope
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- angle
- model casing
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000004088 simulation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000011068 loading method Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims abstract description 3
- 238000002474 experimental method Methods 0.000 claims description 5
- 239000003351 stiffener Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000005429 filling process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
A kind of double-decked slope simulation test device for stability and method, device includes model casing, pressing plate, jack and index plate, model casing is no roof construction and side is without tank wall, pressing plate be located at model casing without tank wall side, the model casing tank wall of pressing plate face is equipped with graduated scale, and pressure sensor is equipped on pressing plate；Index plate is inclined in model casing, and index plate lower end both sides angle point is connected by bolt with pressing plate and model casing tank wall respectively, and model casing bottom plate extends on the outside of pressing plate, and bottom plate is equipped with riser, and jack is connected between riser and pressing plate.Method and step is：Determine interface inclination angle, slope angle and lateral pressure numerical value, according to interface Inclination maneuver index plate, fill lower layer's side slope material and embedded displacement sensor, index plate is adjusted according to slope angle, upper layer side slope material and embedded displacement sensor are filled, index plate is removed, presses pressing plate to lateral pressure, multistage loadings are carried out to model, observation slope surface destroys situation and records land slide data.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, are filled more particularly to a kind of double-decked slope stability simulation test
It sets and method.
Background technology
Double-decked slope is widely distributed, also relatively common in engineering, and the stability of double-decked slope is to engineering
For it is most important.In order to study the stability of double-decked slope, those skilled in the art can build binary in laboratory
Structure side slope model, and carry out model failure test.But failure test is being carried out to existing double-decked slope model
When, the external influence factors considered are not simultaneously comprehensive, have ignored the lateral pressure that double-decked slope in nature may be subject to
Power, and the model failure test of lateral pressure is had ignored, the test data obtained is incomplete, because of double-decked slope
Stability necessarily influenced by lateral pressure.Therefore, it is necessary to lateral pressure be considered in model failure test, to carry
The reliability of high double-decked slope stability study.
Invention content
In view of the problems of the existing technology, the present invention provide a kind of double-decked slope simulation test device for stability and
Method effectively provides lateral pressure and sophisticated model failure test, and the test data obtained is more true comprehensive, and effectively improves
The reliability of double-decked slope stability study.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of double-decked slope stability simulation examination
Experiment device, including model casing, pressing plate, jack and index plate, the model casing are rectangular box, and model casing is used to be tied without top
Structure and side is without tank wall, the pressing plate be located at model casing without tank wall side；The index plate is inclined in model casing, indexing
Plate lower end side angle point is connected by bolt with pressing plate, the mould that index plate lower end other side angle point passes through bolt and pressing plate face
Molding box tank wall is connected, and the bolt of index plate lower end both sides angle point is located on the same line；The bottom plate of the model casing extends
On the outside of to pressing plate, it is provided with riser on the model casing bottom plate on the outside of pressing plate, the jack is connected between riser and pressing plate.
Two guide rails being mutually parallel are provided on the model casing bottom plate, the pressing plate is oriented to by guide rail.
Graduated scale, the bolt position of index plate lower end both sides angle point are provided on the model casing tank wall of the pressing plate face
In on the center of circle of graduated scale.
Pressure sensor is installed on the pressing plate.
It is both provided with stiffener plate in model casing tank wall outer surface and riser lateral surface.
The model casing is made of organic glass.
The pressing plate and riser are made of steel plate.
Using the test method of the double-decked slope simulation test device for stability, include the following steps：
Step 1：Before experiment, it is first determined the interface inclination angle of double-decked slope model and the numerical value of slope angle, and really
Determine double-decked slope model and needs the lateral pressure numerical value born；
Step 2：The bolt of index plate lower end both sides angle point is adjusted to loosening state, according to point determined in step 1
Interface dip is adjusted the angle of inclination of index plate, and the angle of inclination of index plate is determined by graduated scale, Zhi Daofen
The angle of inclination for spending plate is equal to interface inclination angle, then screwing bolts, ensures that index plate can not be rotated further；
Step 3：Lower layer's side slope material is filled into the model casing below index plate, was filled in lower layer's side slope material
Cheng Zhong, it is also necessary to bury displacement sensor below interface, finally be compacted filled lower layer's side slope material；
Step 4：The bolt of index plate lower end both sides angle point is adjusted to loosening state again, is determined according in step 1
Slope angle the angle of inclination of index plate is adjusted, the angle of inclination of index plate is determined by graduated scale, until indexing
The angle of inclination of plate is equal to slope angle, then screwing bolts, ensures that index plate can not be rotated further；
Step 5：Upper layer side slope material is filled into the space between index plate and interface, in upper layer side slope material
In filling process, needs to bury displacement sensor above interface, finally be compacted filled upper layer side slope material, at this time
Complete the preparation of double-decked slope model；
Step 6：The bolt release of index plate lower end both sides angle point is unloaded, then removes index plate from model casing；
Step 7：It is pressed by jack pair pressing plate, until the pressure that pressure sensor measures is equal in step 1
Determining lateral pressure, the pressure of jack stopping at this time, makes lateral pressure maintain stable state；
Step 8：Multistage loadings are carried out in the top of double-decked slope model using servo hydraulic machine, observation slope surface is broken
Bad situation, simultaneous displacement sensor record land slide data.
Beneficial effects of the present invention：
Compared with prior art, the present invention for the first time consider lateral pressure in double-decked slope model failure test,
Three kinds of interface inclination angle, slope angle and lateral pressure influence factors are effectively combined by the experimental rig of brand-new design so that mould
Type failure test is more perfect, and the test data obtained is more true comprehensive, also effectively increases double-decked slope stabilization
The reliability of Journal of Sex Research.
Description of the drawings
Fig. 1 is a kind of double-decked slope simulation test device for stability front view of the present invention；
Fig. 2 is a kind of double-decked slope simulation test device for stability vertical view of the present invention；
Fig. 3 is a kind of double-decked slope simulation test device for stability side view of the present invention；
Fig. 4 is filled with schematic diagram when lower layer's side slope material in the model casing for the present invention；
Fig. 5 is filled with schematic diagram when upper layer side slope material and lower layer's side slope material in the model casing for the present invention；
In figure, 1-model casing, 2-pressing plates, 3-jack, 4-index plates, 5-risers, 6-guide rails, 7-graduated scales,
8-pressure sensors, 9-displacement sensors, 10-bolts, 11-stiffener plates, 12-lower layer's side slope materials, 13-upper layer sides
Slope material.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, 2, 3, a kind of double-decked slope simulation test device for stability, including model casing 1, pressing plate 2, thousand
Jin top 3 and index plate 4, the model casing 1 are rectangular box, and model casing 1 is using no roof construction and side is without tank wall, the pressure
Plate 2 be located at model casing 1 without tank wall side；The index plate 4 is inclined in model casing 1, and 4 lower end side angle point of index plate is logical
It crosses bolt 10 with pressing plate 2 to be connected, 1 tank wall of model casing that 4 lower end other side angle point of index plate passes through bolt 10 and 2 face of pressing plate
It is connected, the bolt 10 of 4 lower end both sides angle point of index plate is located on the same line；The bottom plate of the model casing 1 extends to pressure
The outside of plate 2, is provided with riser 5 on 1 bottom plate of model casing in 2 outside of pressing plate, the jack 3 be connected to riser 5 and pressing plate 2 it
Between.
Two guide rails being mutually parallel 6 are provided on 1 bottom plate of the model casing, the pressing plate 2 is led by guide rail 6
To.
Graduated scale 7, the spiral shell of 4 lower end both sides angle point of the index plate are provided on 1 tank wall of model casing of 2 face of the pressing plate
Bolt is located on the center of circle of graduated scale 7.
Pressure sensor 8 is installed on the pressing plate 2.
It is both provided with stiffener plate 11 in 1 tank wall outer surface of the model casing and 5 lateral surface of riser.
The model casing 1 is made of organic glass.
The pressing plate 2 and riser 5 are made of steel plate.
Using the test method of the double-decked slope simulation test device for stability, include the following steps：
Step 1：Before experiment, it is first determined the interface inclination angle of double-decked slope model and the numerical value of slope angle, while really
Determine double-decked slope model and needs the lateral pressure numerical value born；
Step 2：The bolt 10 of 4 lower end both sides angle point of index plate is adjusted to loosening state, according to what is determined in step 1
Interface inclination angle is adjusted the angle of inclination of index plate 4, and the angle of inclination of index plate 4 is determined by graduated scale 7, directly
It is equal to interface inclination angle to the angle of inclination of index plate 4, then screwing bolts 10, ensures that index plate 4 can not be rotated further；
Step 3：Lower layer's side slope material 12 is filled into the model casing 1 of 4 lower section of index plate, in lower layer's side slope material 12
In filling process, it is also necessary to bury displacement sensor 9 below interface, finally press filled lower layer's side slope material 12
It is real, it is specific as shown in Figure 4；
Step 4：The bolt 10 of 4 lower end both sides angle point of index plate is adjusted to loosening state again, according to true in step 1
Fixed slope angle is adjusted the angle of inclination of index plate 4, and the angle of inclination of index plate 4 is determined by graduated scale 7, until
The angle of inclination of index plate 4 is equal to slope angle, then screwing bolts 10, ensures that index plate 4 can not be rotated further；
Step 5：In the space that upper layer side slope material 13 is filled between index plate 4 and interface, in upper layer side slope material
Expect in 13 filling process, needs to bury displacement sensor 9 above interface, finally press filled upper layer side slope material 13
It is real, the preparation of double-decked slope model is completed at this time, it is specific as shown in Figure 5；
Step 6：The release of bolt 10 of 4 lower end both sides angle point of index plate is unloaded, then by index plate 4 from model casing 1
It removes；
Step 7：It is pressed to pressing plate 2 by jack 3, until the pressure that pressure sensor 8 measures is equal to step 1
The lateral pressure of middle determination, the pressure of the stopping of jack 3 at this time, makes lateral pressure maintain stable state；
Step 8：Multistage loadings are carried out in the top of double-decked slope model using servo hydraulic machine, observation slope surface is broken
Bad situation, simultaneous displacement sensor 9 record land slide data.
The present invention for the first time considers lateral pressure in double-decked slope model failure test, passes through the examination of brand-new design
Experiment device effectively combines three kinds of interface inclination angle, slope angle and lateral pressure influence factors so that model failure test more adds
Kind, the test data obtained is more true comprehensive, also effectively increases the reliability of double-decked slope stability study.
Scheme in embodiment be not to limit the scope of patent protection of the present invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the claims of this case.
Claims (5)
1. a kind of double-decked slope simulation test device for stability, it is characterised in that：Including model casing, pressing plate, jack and
Index plate, the model casing are rectangular box, and model casing is using no roof construction and side is without tank wall, and the pressing plate is located at model
Case without tank wall side；The index plate is inclined in model casing, and index plate lower end side angle point passes through bolt and pressing plate phase
Connection, index plate lower end other side angle point are connected by bolt with the model casing tank wall of pressing plate face, index plate lower end both sides
The bolt of angle point is located on the same line；The bottom plate of the model casing extends on the outside of pressing plate, the model casing on the outside of pressing plate
Riser is provided on bottom plate, the jack is connected between riser and pressing plate；It is provided with two on the model casing bottom plate
The guide rail being mutually parallel, the pressing plate are oriented to by guide rail；It is provided with indexing on the model casing tank wall of the pressing plate face
The bolt of ruler, index plate lower end both sides angle point is located on the center of circle of graduated scale；Pressure sensing is installed on the pressing plate
Device.
2. a kind of double-decked slope simulation test device for stability according to claim 1, it is characterised in that：Described
Model casing tank wall outer surface and riser lateral surface are both provided with stiffener plate.
3. a kind of double-decked slope simulation test device for stability according to claim 1, it is characterised in that：The mould
Molding box is made of organic glass.
4. a kind of double-decked slope simulation test device for stability according to claim 1, it is characterised in that：The pressure
Plate and riser are made of steel plate.
5. using the test method of double-decked slope simulation test device for stability described in claim 1, it is characterised in that
Include the following steps：
Step 1：Before experiment, it is first determined the interface inclination angle of double-decked slope model and the numerical value of slope angle, and determine two
Meta structure side slope model needs the lateral pressure numerical value born；
Step 2：The bolt of index plate lower end both sides angle point is adjusted to loosening state, according to the interface determined in step 1
Inclination angle is adjusted the angle of inclination of index plate, and the angle of inclination of index plate is determined by graduated scale, until index plate
Angle of inclination be equal to interface inclination angle, then screwing bolts ensure that index plate can not be rotated further；
Step 3：Lower layer's side slope material is filled into the model casing below index plate, in lower layer's side slope material fill process,
It also needs to bury displacement sensor below interface, is finally compacted filled lower layer's side slope material；
Step 4：The bolt of index plate lower end both sides angle point is adjusted to loosening state again, according to the slope determined in step 1
Angle is adjusted the angle of inclination of index plate, and the angle of inclination of index plate is determined by graduated scale, until index plate
Angle of inclination is equal to slope angle, then screwing bolts, ensures that index plate can not be rotated further；
Step 5：Upper layer side slope material is filled into the space between index plate and interface, is filled in upper layer side slope material
In the process, it needs to bury displacement sensor above interface, finally filled upper layer side slope material is compacted, is completed at this time
The preparation of double-decked slope model；
Step 6：The bolt release of index plate lower end both sides angle point is unloaded, then takes out index plate from model casing；
Step 7：It is pressed by jack pair pressing plate, until the pressure that pressure sensor measures is determined equal in step 1
Lateral pressure, at this time jack stop pressure, so that lateral pressure is maintained stable state；
Step 8：Multistage loadings are carried out in the top of double-decked slope model using servo hydraulic machine, observation slope surface destroys feelings
Condition, simultaneous displacement sensor record land slide data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610179288.2A CN105865927B (en) | 2016-03-25 | 2016-03-25 | A kind of double-decked slope simulation test device for stability and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610179288.2A CN105865927B (en) | 2016-03-25 | 2016-03-25 | A kind of double-decked slope simulation test device for stability and method |
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| CN105865927A CN105865927A (en) | 2016-08-17 |
| CN105865927B true CN105865927B (en) | 2018-10-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063883B (en) * | 2017-03-14 | 2020-06-30 | 河海大学 | Multifunctional soil mechanics combined test device and test method |
| CN106949875A (en) * | 2017-05-23 | 2017-07-14 | 中国电建集团成都勘测设计研究院有限公司 | Suitable for the physical analog test apparatus of slope deformation destruction |
| CN108120817B (en) * | 2017-11-29 | 2020-06-02 | 中国神华能源股份有限公司 | Laying device for analog simulation experiment materials and using method |
| CN112557178B (en) * | 2020-12-31 | 2023-11-03 | 中北大学 | Multifunctional two-dimensional similar reinforced soil structure model test device |
| CN113235673A (en) * | 2021-05-10 | 2021-08-10 | 重庆交通大学 | Landslide test device considering soil arch effect behind anti-slide pile and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101163117B1 (en) * | 2010-02-26 | 2012-07-06 | 건국대학교 산학협력단 | Direct shear test apparatus |
| US9116079B2 (en) * | 2012-07-13 | 2015-08-25 | Abt, Inc. | Dynamic test fixture |
| CN103234821B (en) * | 2013-03-27 | 2015-04-22 | 山东大学 | Test apparatus and method for geotechnical engineering side slope multi-direction loading |
| CN203241297U (en) * | 2013-05-29 | 2013-10-16 | 宁波大学 | Geomechanical model measurement device for slope stability |
| CN103852572B (en) * | 2014-04-04 | 2015-06-10 | 云南省交通规划设计研究院 | Loadable moving side wall used in three-dimensional model testing platform for roadbed slope |
| CN104677739A (en) * | 2015-03-04 | 2015-06-03 | 东北大学 | Three-dimensional model test platform device for dual-structure soil slope failure |
| CN104807746B (en) * | 2015-04-24 | 2018-10-02 | 中国矿业大学(北京) | Adjustable-angle side slope testing stand |
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Application publication date: 20160817 Assignee: Jilin Sanwei Geotechnical Engineering Co.,Ltd. Assignor: Northeastern University Contract record no.: X2023210000300 Denomination of invention: A simulation test device and method for the stability of a binary structure slope Granted publication date: 20181023 License type: Common License Record date: 20231213 |