CN2901478Y - Saturated sandy soil vibration liquefying demonstrator - Google Patents
Saturated sandy soil vibration liquefying demonstrator Download PDFInfo
- Publication number
- CN2901478Y CN2901478Y CN 200620104299 CN200620104299U CN2901478Y CN 2901478 Y CN2901478 Y CN 2901478Y CN 200620104299 CN200620104299 CN 200620104299 CN 200620104299 U CN200620104299 U CN 200620104299U CN 2901478 Y CN2901478 Y CN 2901478Y
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- CN
- China
- Prior art keywords
- saturated
- sandy soil
- soil sample
- polymethyl
- saturated sandy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a demonstration instrument for vibration liquefaction of saturated sandy soil. The saturated sandy soil sample demonstrated is put into a polymethyl-methacrylate box and on central top of the saturated sandy soil sample a mimic weight is arranged. A side face of the polymethyl-methacrylate box is provided with a plurality of hole-pressure indicator tubes with equally-spaced arrangement. Each port of the hole-pressure indicator tube is provided with a porous stone and inserts into the saturated sandy soil sample demonstrated. An electric-reciprocated vibration machine is arranged on the base of the polymethyl-methacrylate box outside the bottom face of the polymethyl-methacrylate box. A support tripod is arranged on an output shaft of the electric-reciprocated vibration machine. The support tripod is connected to the guided orbit arranged on the bottom face of the polymethyl-methacrylate box. Two sides of the base of upper-end are provided with guided bearings which are connected to the guided orbit with slip connection. By turning on the power switch that is a simple operation, we can demonstrate the liquefaction phenomenon of the saturated sandy soil produced by the saturated sandy soil being suffered with the reciprocated vibration load.
Description
Technical field
The utility model relates to a kind of experimental provision, relates in particular to a kind of saturated sand thixotropy demonstrator.
Background technology
Saturated loosening sand ground can liquefy under seismic loading, becomes as fluid forfeiture shearing strength and load-bearing capacity.The liquefaction mechanism of sand is: a kind of often circulation shear load of geological process.Under this circulation shear load action, saturated loosening sand or silt mesoporosity volume have the trend (promptly cut and contract) of minimizing, when earthquake frequency during greater than the sand drainage rates, this is cut the trend of contracting and will show as sand mesoporosity water pressure and significantly rise, effective stress reduces, and shearing strength and load-bearing capacity reduce or completely lose.After earthquake finishes, because the dissipation (being discharging consolidation) of excess pore water pressure in the sand, soil body volume compression, ground generation sedimentation.Above-mentioned abstract liquefaction mechanism can be utilized showing of this methods of sand liquefaction demonstrator image.
Summary of the invention
The purpose of this utility model is to provide a kind of saturated sand thixotropy demonstrator, and it can demonstrate the liquefaction phenomenon that saturated sand produces owing to oscillatory load.
The technical solution adopted in the utility model is: comprise the simulation pouring weight, and the organic glass case, saturated loosening sand soil sample, guide rail, guide bearing, A-frame, electronic double vibrations machine, base, permeable stone, inditron is pressed in the hole; In the machine glass box, put into saturated loosening sand soil sample to be demonstrated, a simulation pouring weight is placed at saturated loosening sand soil sample center upper portion place, one group of hole pressure inditron of equidistantly arranging is equipped with in one side of organic glass case, every root hole is pressed a port of inditron that permeable stone is housed and is inserted in the saturated loosening sand soil sample to be demonstrated, electronic double vibrations machine is housed on the base outside the bottom surface of organic glass case, on the output shaft of electronic double vibrations machine A-frame is housed, A-frame is connected with guide rail on being contained in organic glass case bottom surface, guide bearing is equipped with in both sides, base upper end, and guide bearing and guide rail are slidingly connected.
The beneficial effect that the utlity model has is: can be observed saturated sand owing to be subjected to the liquefaction phenomenon that reciprocal oscillatory load produces by turning on the power switch this simple operations.
Description of drawings
Accompanying drawing is a structural drawing of the present utility model;
Accompanying drawing: 1, simulation pouring weight, 2, the organic glass case, 3, saturated loosening sand soil sample, 4, guide rail, 5, guide bearing, 6, A-frame, 7, electronic reciprocal jarring machine, 8, base, 9, permeable stone, 10, the hole presses inditron, 11, power switch.
Embodiment
As shown in drawings, the utility model comprises simulation pouring weight 1, organic glass case 2, and saturated loosening sand soil sample 3, guide rail 4, guide bearing 5, A-frame 6, electronic double vibrations machine 7, base 8, permeable stone 9, inditron 10 is pressed in the hole; In machine glass box 2, put into saturated loosening sand soil sample 3 to be demonstrated, a simulation pouring weight 1 is placed at saturated loosening sand soil sample 3 center upper portion places, one group of hole pressure inditron 10 (in the accompanying drawing being three) of equidistantly arranging is equipped with in one side of organic glass case 2, every root hole is pressed a port of inditron 10 that permeable stone 9 is housed and is inserted in the saturated loosening sand soil sample 3 to be demonstrated, electronic double vibrations machine 7 is housed on the base 8 outside the bottom surface of organic glass case 2, A-frame 6 is housed on the output shaft of electronic double vibrations machine 7, A-frame 6 is connected with guide rail 4 on being contained in organic glass case 2 bottom surfaces, guide bearing 5 is equipped with in both sides, base 8 upper end, and guide bearing 5 is slidingly connected with guide rail 4.
By square organic glass case 2 saturated loosening sand soil sample 3 to be demonstrated is housed, in order to prevent to cause transparency to influence observation inadequately, at inwall subsides one deck viscose paper of organic glass case 2 owing to organic glass case 2 is scratched by soil particle.Place simulation pouring weight 1 on the soil sample.During demonstration, energized turns on the power switch 11, and electronic double vibrations machine 7 is done reciprocal vibration, and organic glass case 2 is made double vibrations under the effect of guide bearing 5, by this double vibrations, has imposed on soil body circulation shear load.Under the effect of this shear load, saturated sand is cut and is contracted, and sand mesoporosity water pressure rises, and effective stress reduces (showing as the hole presses inditron 10 middle water levels to rise), load-bearing capacity reduces (showing as the simulation pouring weight sinks), and promptly saturated sand has produced liquefaction under the effect of oscillatory load.
Claims (1)
1. saturated sand thixotropy demonstrator, it is characterized in that: comprise simulation pouring weight (1), organic glass case (2), saturated loosening sand soil sample (3), guide rail (4), guide bearing (5), A-frame (6), electronic double vibrations machine (7), base (8),, permeable stone (9), inditron (10) is pressed in the hole; In machine glass box (2), put into saturated loosening sand soil sample (3) to be demonstrated, a simulation pouring weight (1) is placed at saturated loosening sand soil sample (3) center upper portion place, one group of hole pressure inditron (10) of equidistantly arranging is equipped with in one side of organic glass case (2), every root hole is pressed a port of inditron (10) that permeable stone (9) is housed and is inserted in the saturated loosening sand soil sample (3) to be demonstrated, on the base (8) outside the bottom surface of organic glass case (2) electronic double vibrations machine (7) is housed, A-frame (6) is housed on the output shaft of electronic double vibrations machine (7), A-frame (6) is connected with guide rail (4) on being contained in organic glass case (2) bottom surface, guide bearing (5) is equipped with in both sides, base (8) upper end, and guide bearing (5) is slidingly connected with guide rail (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104299 CN2901478Y (en) | 2006-06-02 | 2006-06-02 | Saturated sandy soil vibration liquefying demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104299 CN2901478Y (en) | 2006-06-02 | 2006-06-02 | Saturated sandy soil vibration liquefying demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901478Y true CN2901478Y (en) | 2007-05-16 |
Family
ID=38085642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620104299 Expired - Lifetime CN2901478Y (en) | 2006-06-02 | 2006-06-02 | Saturated sandy soil vibration liquefying demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901478Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332089A (en) * | 2014-11-27 | 2015-02-04 | 重庆欧派信息科技有限责任公司 | Earthquake porridge science-popularization demonstrating model |
| CN108797655A (en) * | 2017-04-26 | 2018-11-13 | 黄河水利职业技术学院 | A kind of multi-functional soil body thixotropy and the anti-liquefaction functional simulation device of pile foundation |
| CN109297834A (en) * | 2018-09-28 | 2019-02-01 | 深圳大学 | A kind of carbon fiber prevention and treatment sand static liquefaction experimental method |
-
2006
- 2006-06-02 CN CN 200620104299 patent/CN2901478Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332089A (en) * | 2014-11-27 | 2015-02-04 | 重庆欧派信息科技有限责任公司 | Earthquake porridge science-popularization demonstrating model |
| CN108797655A (en) * | 2017-04-26 | 2018-11-13 | 黄河水利职业技术学院 | A kind of multi-functional soil body thixotropy and the anti-liquefaction functional simulation device of pile foundation |
| CN109297834A (en) * | 2018-09-28 | 2019-02-01 | 深圳大学 | A kind of carbon fiber prevention and treatment sand static liquefaction experimental method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20090603 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |