CN105738196A - Vertically-loaded multilayer shear model box - Google Patents
Vertically-loaded multilayer shear model box Download PDFInfo
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- CN105738196A CN105738196A CN201610216698.XA CN201610216698A CN105738196A CN 105738196 A CN105738196 A CN 105738196A CN 201610216698 A CN201610216698 A CN 201610216698A CN 105738196 A CN105738196 A CN 105738196A
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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
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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Abstract
The invention discloses a vertically-loaded multilayer shear model box for the purpose of solving the problem that an existing layered shear box cannot simulate bidirectional vibration of a soil layer, and consequently test results will have a large difference.The vertically-loaded multilayer shear model box comprises a bottom plate, a model soil box body, a counter-force system, a rolling pulley, a steel plate support, a laser displacement sensor and a sensor wire outlet hole.The model soil box body is fixed to the bottom plate, layered frames are longitudinally arranged in the model soil box body, and a bearing and a siding groove are arranged between every two layers of adjacent frames.A loading device is arranged on the top of the model soil box body and comprises a spring, a top plate, thin steel plates with scales and bolts.The top plate is arranged on the upper portion of the spring, the bottom of the spring is arranged on a counter-force steel plate, the thin steel plates with the scales are symmetrically and vertically arranged on the two sides of the counter-force steel plate, and the bottoms of the thin steel plates with the scales are fixed to the counter-force steel plate.The device is convenient to install and dismantle, the test process is safe, and high practicability is achieved.
Description
Technical field
The invention belongs to field tests, be specifically related to a kind of Large-scale Shaking Table Test model clay case.
Background technology
Recently increasingly it is subject to people's attention by secondary disasters such as seismic landslides.Along with after shake, the various performance parameters of the soil body changes, the correctness of the shear strength parameter of landslide disaster prevention design alternative landslide slip becomes the key of Control Engineering success or failure after shake.In order to obtain desirable result of the test, researcher has carried out many meaningful research work in the design and making of model casing.
Existing large-scale laminar shear case, it is impossible to the vibratory response of simulation Deep Soil Layers, the especially Deep Soil Layers of more than 50m.And a kind of can load laminar shear case, although Deep Soil Layers can be applied effective confining pressure, but it is only limitted to soil layer and horizontally vibrates (X to), lack the check to confined pressure, the two-way oscillation (X, Z) of soil layer can not be simulated so that result of the test has larger difference.
Summary of the invention
It is an object of the invention to provide a kind of shear model box that can load and simulate simultaneously effectively Deep Soil Layers two-way oscillation effect, the two-way oscillation of soil layer can not be simulated solving existing laminar shear case so that the problem that result of the test has larger difference.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of vertical loading multilamellar shear model box, including base plate, model clay box main body, counter force system, rolling pulley, stainless steel strut, laser displacement sensor, sensor wire hole, counter force system includes counter-force steel plate and coupled counter-force support, base plate is fixed with model clay box main body, model clay box main body is longitudinally provided with stratiform framework, bearing and chute it is provided with between adjacent two layers framework, the top of described model clay box main body is provided with charger, described charger includes spring, top board, the sheet metal of chi with a scale, bolt, spring top is provided with top board, the bottom of spring is located on counter-force steel plate, the sheet metal Symmetrical vertical of chi with a scale is arranged on the both sides of counter-force steel plate, it is fixed on bottom it on counter-force steel plate.
Preferably, described counter-force rack arrangement is in the both sides, front and back of model clay box main body.
Preferably, the both sides of described rolling pulley are provided with and the lateral spacing plate being connected bottom counter-force steel plate.
Preferably, it is provided with spacing steel plate in the middle of stratiform base of frame.
Preferably, it is equipped with built-in pressure cell in described base plate and inside model clay box main body.
Preferably, it is provided with cushion inside described model clay box main body.
Preferably, described stainless steel strut is fixed on base plate, is positioned at the side of model clay box main body, and the both sides of stainless steel strut are made up of vertical plane and inclined-plane, and laser displacement sensor is located at the upper of stainless steel strut.
The method have the advantages that
1., in shaketalle test, compress spring 7 by bolt 8 and be further applied load, finally by pressure-bearing steel plate, pressure is uniformly transferred to the soil body.In test amount of spring compression is corresponding with the sheet metal 9 of chi with a scale, just can obtain payload values.
2. in process of the test, this laminar shear model casing achieves two-way oscillation (X, Z-direction), and this soil box main body is without limitation on soil layer motion on direction of vibration, it is allowed to model clay box main body has the vibration of higher magnitude, more can truly simulate Deep Soil Layers dynamic response under geological process.
3. backplane sinusoid pressure cell, can to the confined pressure of experimental test soil layer, and lateral pressure coefficient is measured, and counter can push away the stress state of the soil body after shake, analyze its possible rupture location.
4. the inner side of model clay box main body is provided with cushion close to soil body rigidity so that the soil body is similar with the deformation in the longitudinal direction of model clay box main body, and can reduce the generation of the soil body interaction with model clay box main body and reduction compressional wave.
5. stainless steel strut is mounted on laser displacement sensor, it is possible to the detrusion of the overall process monitoring soil body.
6. this device, installation, convenient disassembly, and process of the test safety, there is stronger practicality.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of vertical loading multilamellar shear model box；
Fig. 2 is the side view of a kind of vertical loading multilamellar shear model box；
Fig. 3 is the top view of counter force system in a kind of vertical loading multilamellar shear model box；
Fig. 4 is the process of the test figure of a kind of vertical loading multilamellar shear model box.
Accompanying drawing labelling implication is as follows: 1. base plate；2. model clay box main body；3. charger；4. pressure-bearing steel plate；5 counter-force steel plates；6. top board；7. spring；8. bolt；9. the sheet metal of chi with a scale；10. rolling pulley；11. lateral spacing plate；12. cushion；13. stainless steel strut；14. laser displacement sensor；15. pressure cell；16. bearing；17. spacing steel plate；18. sensor wire hole；19. chute；20. counter-force support；21. stratiform framework；131. vertical plane；132. inclined-plane.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
As shown in the figure, a kind of vertical loading multilamellar shear model box, including base plate 1, model clay box main body 2, counter force system, rolling pulley 10, stainless steel strut 13, laser displacement sensor 14, sensor wire hole 18, counter force system includes counter-force steel plate 5 and coupled counter-force support 20, base plate 1 is fixed with model clay box main body 2, model clay box main body 2 is longitudinally provided with stratiform framework 21, between adjacent two layers framework, is provided with bearing 16 and chute 19, can relative sliding, conveniently dismounting.The top of model clay box main body 2 is provided with charger 3, charger 3 includes spring 7, top board 6, the sheet metal 9 of chi with a scale, bolt 8, spring 7 top is provided with top board 6, the bottom of spring 7 is located on counter-force steel plate 5, sheet metal 9 Symmetrical vertical of chi with a scale is arranged on the both sides of counter-force steel plate 5, is fixed on counter-force steel plate 5, with counter-force Plate Welding bottom the sheet metal 9 of chi with a scale bottom it, primarily serve corresponding load, it is ensured that top board 6 is on same level line.With ensure be further applied load accurate.
It is welded and fixed with base plate 1 bottom model clay box main body.Model clay box main body number of plies the best is 10 layers, counts from the top down, for making ground floor soil body confined pressure avoid too high, destroys state of soil, and its floor height is 2 times of other shear layer floor heights.
For Fig. 1, counter-force support 20 is arranged in both sides before and after model clay box main body 2.Counter-force steel plate 5 adopts bolt 8 to be connected with counter-force support 20, and counter-force support 20 welds with base plate 1.
The both sides of rolling pulley 10 are provided with lateral spacing plate 11, lateral spacing plate 11 only with counter-force steel plate 5 bottom welding.Lateral spacing plate 11 has bigger rigidity.The relative sliding displacement of restriction charger and model clay box main body 2.Rolling pulley 10 can relative sliding, it is ensured that each interlayer of whole model clay case in the horizontal direction slidably, can be not intended to the Horizontal Vibration of the soil body.Being provided with cushion 12 inside model clay box main body 2, cushion 12 reduces the boundary effect of model.The safety of guarantee test.In process of the test, each shear layer of model clay box main body 2, effect due to cushion 12, the soil body can be made similar with the deformation in the longitudinal direction of model clay box main body, reducing the generation of the soil body interaction with model clay box main body and compressional wave, wherein cushion connects into a piece of with the cutting box of width.
It is provided with spacing steel plate 17 in the middle of bottom stratiform framework 21.Make the enough relative slidings on horizontal vibration direction of each layer soil body, there is larger vibration displacement, and charger be not intended to model clay box main body 2 and vertically vibrate, it is thus possible to the two-way oscillation of model soil layer simultaneously, better simulate the detrusion of soil layer.And avoid the soil body under vibration by a relatively large margin to throw away, it is ensured that the safety of test and result accurate.
It is equipped with built-in pressure cell 15 in base plate 1 and inside model clay box main body 2.The lateral pressure coefficient of the soil body can be measured, check the soil pressure filling the soil body, and contrast with theoretical value.
Stainless steel strut 13 is fixed on base plate 1, is positioned at the side of model clay box main body 2, and the both sides of stainless steel strut 13 are made up of vertical plane 131 and inclined-plane 132, and laser displacement sensor 14 is located on stainless steel strut 13.Can monitoring the detrusion of the soil body at any time, stainless steel strut 13 and model clay box main body 2 are not connected to, and are advantageous in that: be not intended to interlayer soil body generation violent oscillatory motion, reduce the inertia effect, because model quality is more big, the inertia self caused is more big so that vibration aggravation.The laser displacement sensor 14 pressure cell numerical value built-in with bottom steel plate is corresponding, is conducive to the deformation of analytical soil sample.
Slide owing to this device allows the interlayer soil body to have bigger relative displacement, and the setting of stainless steel strut can guarantee test process be perfectly safe.
In present embodiment, cushion 12 can adopt thin metal steel disc or polythene material.Spring constant is demarcated, and it is corresponding with amount of spring compression that the sheet metal 9 of chi with a scale indicates scale, can compress spring 7 by bolt 8 and regulate payload values.
Existing stress model case, support and top Interal fixation, limit significantly vibration displacement.And support steel plate of the present invention with charger without being connected so that can there is the vibration displacement of bigger amplitude in the interlayer soil body, and be not intended to mould to vibration.
Charger 3 can, effectively by pressure transmission to pressure-bearing steel plate 4, can make to be transmitted to the stress of the soil body evenly by the counter-force steel plate 5 of bottom, makes result of the test more accurate.
Charger 3 compresses spring 7 by bolt 8 and is further applied load, and as required, can pass through to regulate amount of spring compression and soil layer applies effective confining pressure, and sheet metal 9 acquisition of corresponding chi with a scale is further applied load value, accurately to control soil layer confined pressure.
The bottom of base plate 1 can directly be connected with large vibration table, and vibrate along with large vibration table.
The pressure-bearing steel plate 4 at model clay box main body 2 top is provided with some sensor wire holes 18, and is provided with sensor wire box in its both sides.
In vibration test, soil body layering is filled in model clay box main body 2, after filling, by compressing spring 7, pressure-bearing steel plate is pressed.In process of the test, model clay box main body vibrates in horizontal direction without limitation on soil layer, and owing to arranging of spring allows model clay box main body vertical motion, therefore this multilayered model soil box main body can simulate Deep Soil Layers two-way oscillation under oscillatory load effect.
Claims (7)
- null1. a vertical loading multilamellar shear model box，Including base plate、Model clay box main body、Counter force system、Rolling pulley、Stainless steel strut、Laser displacement sensor、Sensor wire hole，Counter force system includes counter-force steel plate and coupled counter-force support，Base plate is fixed with model clay box main body，Model clay box main body is longitudinally provided with stratiform framework，Bearing and chute it is provided with between adjacent two layers framework，It is characterized in that: the top of described model clay box main body (2) is provided with charger (3)，Described charger (3) includes spring (7)、Top board (6)、The sheet metal (9) of chi with a scale、Bolt (8)，Spring (7) top is provided with top board (6)，The bottom of spring (7) is located on counter-force steel plate (5)，Sheet metal (9) Symmetrical vertical of chi with a scale is arranged on the both sides of counter-force steel plate (5)，It is fixed on bottom it on counter-force steel plate (5).
- 2. vertical loading multilamellar shear model box according to claim 1, it is characterised in that: described counter-force support (20) is arranged in the both sides, front and back of model clay box main body (2).
- 3. vertical loading multilamellar shear model box according to claim 1, it is characterised in that: the both sides of described rolling pulley (10) are provided with the lateral spacing plate (11) being connected with counter-force steel plate (5) bottom.
- 4. vertical loading multilamellar shear model box according to claim 3, it is characterised in that: stratiform framework (21) is provided with spacing steel plate (17) in the middle of bottom.
- 5. vertical loading multilamellar shear model box according to claim 4, it is characterised in that: in described base plate (1) and model clay box main body (2) inner side is equipped with built-in pressure cell (15).
- 6. vertical loading multilamellar shear model box according to claim 5, it is characterised in that: described model clay box main body (2) inner side is provided with cushion (12).
- 7. vertical loading multilamellar shear model box according to claim 6, it is characterized in that: described stainless steel strut (13) is fixed on base plate (1), it is positioned at the side of model clay box main body (2), the both sides of stainless steel strut (13) are made up of vertical plane (131) and inclined-plane (132), and laser displacement sensor (14) is located on stainless steel strut (13).
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Cited By (12)
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| CN106522286A (en) * | 2016-10-11 | 2017-03-22 | 黑龙江省地震局 | Large soil-structure interaction test box |
| CN106940235A (en) * | 2017-03-07 | 2017-07-11 | 北京工业大学 | The shake table model clay case experimental rig of fast changeable model casing |
| CN107132034A (en) * | 2017-05-09 | 2017-09-05 | 昆明理工大学 | A kind of underground structure pseudo static testing device and method |
| CN107941445A (en) * | 2018-01-08 | 2018-04-20 | 大连理工大学 | A kind of unidirectional shear model box for shaketalle test |
| CN108225942A (en) * | 2017-12-18 | 2018-06-29 | 河海大学 | For the large-size simple shear apparatus and test method of sludge-domestic garbage mixing landfill body |
| WO2018157734A1 (en) * | 2017-02-28 | 2018-09-07 | 浙江大学 | Three-directional motion decoupling periodic structure for vibration table mould box |
| CN108760616A (en) * | 2018-05-29 | 2018-11-06 | 福州大学 | A kind of bath scaled model experimental device and experimental method of the simulation lateral soil movement that speed is controllable |
| CN109855985A (en) * | 2018-12-19 | 2019-06-07 | 重庆交通大学 | Multiphase soil stone medium clipper destroys resistivity responding characteristics experimental rig and method |
| CN113049328A (en) * | 2021-03-11 | 2021-06-29 | 华东交通大学 | Device for preparing sandy soil samples with different deposition angles |
| CN113639949A (en) * | 2021-08-23 | 2021-11-12 | 西安理工大学 | Vibration shearing box capable of measuring end force and damping |
| CN113883996A (en) * | 2021-09-14 | 2022-01-04 | 中铁西北科学研究院有限公司 | Simulation device and analysis method for influence of foundation additional stress on superstructure |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522286A (en) * | 2016-10-11 | 2017-03-22 | 黑龙江省地震局 | Large soil-structure interaction test box |
| WO2018157734A1 (en) * | 2017-02-28 | 2018-09-07 | 浙江大学 | Three-directional motion decoupling periodic structure for vibration table mould box |
| CN106940235A (en) * | 2017-03-07 | 2017-07-11 | 北京工业大学 | The shake table model clay case experimental rig of fast changeable model casing |
| CN107132034A (en) * | 2017-05-09 | 2017-09-05 | 昆明理工大学 | A kind of underground structure pseudo static testing device and method |
| CN108225942A (en) * | 2017-12-18 | 2018-06-29 | 河海大学 | For the large-size simple shear apparatus and test method of sludge-domestic garbage mixing landfill body |
| CN107941445B (en) * | 2018-01-08 | 2024-02-06 | 大连理工大学 | Unidirectional shearing model box for vibrating table test |
| CN107941445A (en) * | 2018-01-08 | 2018-04-20 | 大连理工大学 | A kind of unidirectional shear model box for shaketalle test |
| CN108760616A (en) * | 2018-05-29 | 2018-11-06 | 福州大学 | A kind of bath scaled model experimental device and experimental method of the simulation lateral soil movement that speed is controllable |
| CN108760616B (en) * | 2018-05-29 | 2020-11-03 | 福州大学 | Speed-controllable model experiment device and speed-controllable model experiment method for simulating soil body lateral movement |
| CN109855985A (en) * | 2018-12-19 | 2019-06-07 | 重庆交通大学 | Multiphase soil stone medium clipper destroys resistivity responding characteristics experimental rig and method |
| CN113049328A (en) * | 2021-03-11 | 2021-06-29 | 华东交通大学 | Device for preparing sandy soil samples with different deposition angles |
| CN113639949A (en) * | 2021-08-23 | 2021-11-12 | 西安理工大学 | Vibration shearing box capable of measuring end force and damping |
| CN113883996A (en) * | 2021-09-14 | 2022-01-04 | 中铁西北科学研究院有限公司 | Simulation device and analysis method for influence of foundation additional stress on superstructure |
| CN113883996B (en) * | 2021-09-14 | 2024-02-02 | 中铁西北科学研究院有限公司 | Simulation device and analysis method for influence of foundation additional stress on upper structure |
| CN113916478A (en) * | 2021-10-08 | 2022-01-11 | 天津大学 | A shear box for underwater multi-point seismic input with variable stiffness along the height direction |
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