CN100495478C - Saturated sand vibration liquefication demonstrator - Google Patents
Saturated sand vibration liquefication demonstrator Download PDFInfo
- Publication number
- CN100495478C CN100495478C CNB2006101552052A CN200610155205A CN100495478C CN 100495478 C CN100495478 C CN 100495478C CN B2006101552052 A CNB2006101552052 A CN B2006101552052A CN 200610155205 A CN200610155205 A CN 200610155205A CN 100495478 C CN100495478 C CN 100495478C
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- saturated
- organic glass
- glass case
- sand
- soil sample
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
This invention discloses a liquefied demonstrating instrument of saturated sand under vibration, in which, a being demonstrated saturated loosen sand sample is put in an organic glass box, an analog heavy block is put in the middle of the top of the sample, a set of equal distance arranged hole-pressure indication tubes are set on one side of the box and one port of each tube contains a pervious stone plugged in the sample, an electric to-and-fro vibrator is installed on the base outside of the bottom of the box, a triangle frame is set on the output shaft and connected with the guide orbit on the bottom of the box, and guide bearings are set at both sides of the top of the base connected with the orbit slidingly, and liquefied phenomenon of saturated sand generated by the to-and-fro vibration can be watched by turning on the power.
Description
Technical field
The present invention relates to a kind of experimental provision, relate 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 object of the present invention is to provide a kind of saturated sand thixotropy demonstrator, it can demonstrate the liquefaction phenomenon that saturated sand produces owing to oscillatory load.
The technical solution used in the present invention 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 organic glass case, 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 present invention 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 invention;
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 present invention includes 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 organic glass case 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 organic glass case (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 |
|---|---|---|---|
| CNB2006101552052A CN100495478C (en) | 2006-12-14 | 2006-12-14 | Saturated sand vibration liquefication demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101552052A CN100495478C (en) | 2006-12-14 | 2006-12-14 | Saturated sand vibration liquefication demonstrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987960A CN1987960A (en) | 2007-06-27 |
| CN100495478C true CN100495478C (en) | 2009-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101552052A Expired - Fee Related CN100495478C (en) | 2006-12-14 | 2006-12-14 | Saturated sand vibration liquefication demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100495478C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024370B (en) * | 2009-09-22 | 2012-02-29 | 同济大学 | Model test system for sandy soil liquefaction and flowing |
| CN102663951B (en) * | 2012-04-17 | 2013-12-11 | 安徽弘炜机电科技有限责任公司 | Simulator for demonstrating liquefaction of sand |
| CN103778842B (en) * | 2014-02-27 | 2017-01-11 | 北京铁五院工程机械有限公司 | Special demonstration system of experiment of liquefaction of sand |
| CN104807748B (en) * | 2015-05-21 | 2017-05-31 | 金陵科技学院 | A kind of pilot system for studying the lateral fluent characteristic of liquefaction earth |
| CN106053878B (en) * | 2016-07-15 | 2018-09-21 | 浙江科技学院 | Thin sight flow observation device and its observation procedure when liquefaction in pellet pores |
| CN106468720B (en) * | 2016-09-30 | 2018-11-20 | 浙江科技学院（浙江中德科技促进中心） | The magnetic force thixotropy generating device and test method of flow observation are carefully seen between particle |
| CN106680459A (en) * | 2016-12-02 | 2017-05-17 | 河南理工大学 | Experimental device for simulating liquefaction of tailings |
| CN107036775B (en) * | 2017-03-31 | 2019-03-22 | 常州大学 | Buried pipelines conveying fluid sand liquefaction reaction test observation system |
| CN107036937B (en) * | 2017-05-25 | 2023-07-14 | 广东度量衡勘测设计有限公司 | Device and method for measuring apparent viscosity of liquefied sand |
| CN108107190A (en) * | 2018-01-29 | 2018-06-01 | 铜陵学院 | A kind of full water and soil body local vibration liquefaction test apparatus and method |
| CN110441028B (en) * | 2019-07-12 | 2021-02-05 | 中国电建集团华东勘测设计研究院有限公司 | Experimental device capable of simulating landslide and impact caused by liquefaction of seabed sandy soil |
| CN110534005B (en) * | 2019-09-05 | 2021-09-14 | 山东建筑大学 | Simulation demonstration device for soil liquefaction disasters |
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2006
- 2006-12-14 CN CNB2006101552052A patent/CN100495478C/en not_active Expired - Fee Related
Non-Patent Citations (6)
| Title |
|---|
| 粉土液化的小型振动台试验研究. 景立平，崔杰，李立云，郑志华.地震工程与工程振动，第24卷第3期. 2004 |
| 粉土液化的小型振动台试验研究. 景立平，崔杰，李立云，郑志华.地震工程与工程振动，第24卷第3期. 2004 * |
| 饱和砂土地震液化及治理措施. 王卫.西北水力发电，第22卷第1期. 2006 |
| 饱和砂土地震液化及治理措施. 王卫.西北水力发电，第22卷第1期. 2006 * |
| 饱和砂土的剪切波速与抗液化强度相关性研究. 王建华，程国勇.岩土工程学报，第27卷第4期. 2005 |
| 饱和砂土的剪切波速与抗液化强度相关性研究. 王建华，程国勇.岩土工程学报，第27卷第4期. 2005 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1987960A (en) | 2007-06-27 |
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Granted publication date: 20090603 Termination date: 20181214 |