CN103778842A - Special demonstration system of experiment of liquefaction of sand - Google Patents
Special demonstration system of experiment of liquefaction of sand Download PDFInfo
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- CN103778842A CN103778842A CN201410069113.7A CN201410069113A CN103778842A CN 103778842 A CN103778842 A CN 103778842A CN 201410069113 A CN201410069113 A CN 201410069113A CN 103778842 A CN103778842 A CN 103778842A
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- 239000004576 sand Substances 0.000 title claims abstract description 56
- 238000002474 experimental method Methods 0.000 title abstract description 5
- 239000012780 transparent material Substances 0.000 claims abstract description 3
- 239000002689 soil Substances 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a special demonstration system of an experiment of liquefaction of sand. The special demonstration system of the experiment of the liquefaction of sand comprises a base vibrating table and a sand chamber which is hung above the base vibrating table, the lower portion of the sand chamber is provided with a funnel, a hanging bracket is fixed on the base vibrating table. The side walls of the sand chamber are transparent materials. The inside of the sand chamber is provided with a sand pressure sensor. The base vibrating table is provided with a vibrating motor which is provided with a variable-frequency speed regulator. The sand chamber is provided with a vertical amplitude adjusting and locking device and a horizontal amplitude adjusting and locking device. The special demonstration system of the experiment of the liquefaction of sand can truly reflect the liquefaction of sand of the natural world, is small in man-made influence factor, stable in data and simple in operation.
Description
Technical field
The experimental provision that the present invention relates to sand liquefaction after a kind of earthquake, relates in particular to a kind of tailored version liquefaction of sand experimental demonstration system.
Background technology
At present, on the earth, still earthquake takes place frequently, and is example take Beijing, and Beijing area is located in the east of North China Plate, near Tan (a state in the Zhou Dynasty) hut major rupture, is subject to the impact of Pacific Plate subduction, is the active region of earthquake.Because Pekinese's building major part is built on ancient Yongdinghe River outfall fan, there are the material conditions of earthquake stonebrash liquefaction.After earthquake disaster occurs, be setting of ground and the house crack causing after sand liquefaction and collapse for the key element of the destructive power maximum of buildings.Urban construction has been accelerated in current capital and to surrounding area development, groups of building are to development in pluralism, and in some areas, skyscraper is built more and more, builds higher and higher, has increased the weight of the carrying burden in soil.Under the new situation, from environmental protection and the angle of preventing and reducing natural disasters, in planning and construction of the city, be necessary the distribution in Study of Seismic sand liquefaction district, for urban construction security provides reliable scientific basis.Earthquake is the power actuated performance of a kind of earth, and it causes instantaneous catastrophic event.When modern earthquake occurs, except showing as house collapse, destroy road, cause outside a series of disasters such as fire, also in sediment, cause modern sand liquefaction (being water-jet), ground cracking (ground fissure) etc.
Have the present age three class experts to be concerned about Seismic Problems:
1) seismologist's notice is concentrated dry earthquake prediction (long term, recent and imminent earthquake);
2) seismogeology scholar concentrates on notice in the structural setting of earthquake generation, for earthquake prediction provides detailed as far as possible geologic background data;
3) building scholar only notes the anti-seismic performance of constructure inner structure.
Only have ecoenvironmental geology man more to pay close attention to sandy soil under buildings mobile because liquefaction produces, cause the serious problems of building collapsing.Due in certain distance around earthquake epicenter, sediment very easily produces earthquake liquefaction, modern urban architecture facility is destroyed greatly, and liquefaction of sand problem be directly connected to people's life and property safety the same as earthquake intensity, should cause more and more people's concern.
The impact of liquefaction of sand on Beijing Urban Construction: ancient city of Beijing is built on the wetland of the numerous and ancient Yongdinghe River outfall fan in lake, the few tall and big house of buildings, and be mostly yoke structure complete be main Chinese courtyard house, shock resistance is extremely strong.But along with the development of after liberation urban construction, there is huge variation in ancient Beijing.Building is many, story height, the static pressure on ground has been increased to thousands of times.Because Beijing is located in meizoseismal area, once possess above-mentioned earthquake liquefaction of sand condition, will there is uneven subsidence in ground, and its ground skyscraper may even collapse in run-off the straight.
In existing art, be all that artifical influence factor is large, data stability is poor, can not play research effect by a part of phenomenon of artificial method demonstration earthquake stonebrash liquefaction.
Summary of the invention
The object of this invention is to provide a kind of tailored version liquefaction of sand experimental demonstration system that can demonstrate earthquake stonebrash liquefaction.
The object of the invention is to be achieved through the following technical solutions:
Tailored version liquefaction of sand experimental demonstration system of the present invention, comprise base shaking table, sand chamber, described sand chamber is by hanger suspending above described base shaking table, and the bottom of described sand chamber is provided with funnel, and described suspension bracket is fixed on described base shaking table.
As seen from the above technical solution provided by the invention, the tailored version liquefaction of sand experimental demonstration system that the embodiment of the present invention provides, owing to comprising base shaking table, sand chamber, sand chamber by hanger suspending above base shaking table, the bottom of sand chamber is provided with funnel, and suspension bracket is fixed on base shaking table.Can truly reflect nature liquefaction of sand phenomenon, artifical influence factor is little, data stabilization.
Accompanying drawing explanation
The Facad structure schematic diagram of the tailored version liquefaction of sand experimental demonstration system that Fig. 1 provides for the embodiment of the present invention;
The side structure schematic diagram of the tailored version liquefaction of sand experimental demonstration system that Fig. 2 provides for the embodiment of the present invention;
The planar structure schematic diagram of the tailored version liquefaction of sand experimental demonstration system that Fig. 3 provides for the embodiment of the present invention.
In figure: 1, base shaking table, 2, funnel, 3, sand chamber, 4, suspension bracket.
Embodiment
To be described in further detail the embodiment of the present invention below.
Tailored version liquefaction of sand experimental demonstration system of the present invention, its preferably embodiment be:
Comprise base shaking table, sand chamber, described sand chamber is by hanger suspending above described base shaking table, and the bottom of described sand chamber is provided with funnel, and described suspension bracket is fixed on described base shaking table.
The sidewall of described sand chamber is transparent material.
The indoor soil pressure case that is provided with of described sand.
Described base shaking table is provided with vibrating motor, and described vibrating motor is provided with variable-frequence governor.
Described sand chamber is provided with upper and lower amplitude adjusting and locking device and horizontal vibration amplitude and regulates and locking device.
When earthquake, because moment is subject to suddenly the strong effect of brisance hugely, interstitial water in sandy soil layer has little time to discharge, space is pressed suddenly and is raise, cause sandy soil layer to present suddenly liquid physical form, cause foundation bearing capacity greatly to decline, above ground structure is sunk in the drift sand forming, produce greatly and destroy.It is generally acknowledged that water-jet phenomenon when earthquake is to be also embedded in underground sandy soil layer to produce the result of liquefaction.Tailored version liquefaction of sand experimental demonstration system of the present invention, can truly reflect nature liquefaction of sand phenomenon, can regulate vibration frequency by frequency control, produces a desired effect, and adopts soil pressure case to observe soil pressure front and back variable condition.Equipment integrated design makes construction more easily convenient.The design of plant capacity minimization significantly reduces use cost.Can regulate and locking level and upper and lower amplitude, make laboratory equipment significantly reduce noise.
In concrete application, electric supply installation can be the above 380v power electric of 10kw.
The present invention can not only clearly show the Nature Disasters, can also carry out various experiments, thereby understands the reason that liquefaction of sand produces, and can research and solve method.Can solve Traditional Man demonstration, directly show disaster in big-and-middle college teaching research and training organization, simple to operate, easy to utilize.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (5)
1. a tailored version liquefaction of sand experimental demonstration system, it is characterized in that, comprise base shaking table, sand chamber, described sand chamber by hanger suspending above described base shaking table, the bottom of described sand chamber is provided with funnel, and described suspension bracket is fixed on described base shaking table.
2. tailored version liquefaction of sand experimental demonstration system according to claim 1, is characterized in that, the sidewall of described sand chamber is transparent material.
3. tailored version liquefaction of sand experimental demonstration system according to claim 2, is characterized in that, the indoor soil pressure case that is provided with of described sand.
4. according to the tailored version liquefaction of sand experimental demonstration system described in claim 1,2 or 3, it is characterized in that, described base shaking table is provided with vibrating motor, and described vibrating motor is provided with variable-frequence governor.
5. tailored version liquefaction of sand experimental demonstration system according to claim 4, is characterized in that, described sand chamber is provided with upper and lower amplitude adjusting and locking device and horizontal vibration amplitude and regulates and locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410069113.7A CN103778842B (en) | 2014-02-27 | 2014-02-27 | Special demonstration system of experiment of liquefaction of sand |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410069113.7A CN103778842B (en) | 2014-02-27 | 2014-02-27 | Special demonstration system of experiment of liquefaction of sand |
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| CN103778842A true CN103778842A (en) | 2014-05-07 |
| CN103778842B CN103778842B (en) | 2017-01-11 |
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Cited By (4)
| 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 |
| CN105040632B (en) * | 2015-07-31 | 2016-08-24 | 中国能源建设集团江苏省电力设计院有限公司 | Place based on Finn model anti-liquefaction Design process of refinement method |
| CN106680459A (en) * | 2016-12-02 | 2017-05-17 | 河南理工大学 | Experimental device for simulating liquefaction of tailings |
| CN106768847A (en) * | 2017-02-14 | 2017-05-31 | 华侨大学 | The analogy method and device of a kind of Potential of Seabed Under Wave Loading liquefaction water-jet depth |
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| JP2001305952A (en) * | 2000-04-21 | 2001-11-02 | Natl Inst Of Advanced Industrial Science & Technology Meti | Device for experimenting and observing behavior of particle and method for experimenting and observing thereon |
| CN1987960A (en) * | 2006-12-14 | 2007-06-27 | 浙江大学 | Saturated sand vibration liquefication demonstrator |
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| CN102024370A (en) * | 2009-09-22 | 2011-04-20 | 同济大学 | Model test system for sandy soil liquefaction and flowing |
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| CN202649077U (en) * | 2012-06-12 | 2013-01-02 | 河海大学 | Test device for testing liquefied sandy soil apparent viscosity |
| CN103293082A (en) * | 2013-05-30 | 2013-09-11 | 河海大学 | Testing device and method for measuring sandy soil moving states under different liquefaction degrees |
| CN203721109U (en) * | 2014-02-27 | 2014-07-16 | 北京铁五院工程机械有限公司 | Special-purpose sandy-soil liquefaction experiment demonstration system |
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2014
- 2014-02-27 CN CN201410069113.7A patent/CN103778842B/en active Active
Patent Citations (9)
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| JP2001305952A (en) * | 2000-04-21 | 2001-11-02 | Natl Inst Of Advanced Industrial Science & Technology Meti | Device for experimenting and observing behavior of particle and method for experimenting and observing thereon |
| CN1987960A (en) * | 2006-12-14 | 2007-06-27 | 浙江大学 | Saturated sand vibration liquefication demonstrator |
| CN102024370A (en) * | 2009-09-22 | 2011-04-20 | 同济大学 | Model test system for sandy soil liquefaction and flowing |
| CN101788444A (en) * | 2010-01-15 | 2010-07-28 | 河海大学 | Device for measuring apparent viscosity of liquefied sand and method therefor |
| CN102564903A (en) * | 2011-12-26 | 2012-07-11 | 河海大学 | Test device for testing flow characteristics of liquefied sand and test method |
| CN102663951A (en) * | 2012-04-17 | 2012-09-12 | 安徽弘炜机电科技有限责任公司 | Simulator for demonstrating liquefaction of sand |
| CN202649077U (en) * | 2012-06-12 | 2013-01-02 | 河海大学 | Test device for testing liquefied sandy soil apparent viscosity |
| CN103293082A (en) * | 2013-05-30 | 2013-09-11 | 河海大学 | Testing device and method for measuring sandy soil moving states under different liquefaction degrees |
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Cited By (5)
| 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 |
| CN105040632B (en) * | 2015-07-31 | 2016-08-24 | 中国能源建设集团江苏省电力设计院有限公司 | Place based on Finn model anti-liquefaction Design process of refinement method |
| CN106680459A (en) * | 2016-12-02 | 2017-05-17 | 河南理工大学 | Experimental device for simulating liquefaction of tailings |
| CN106768847A (en) * | 2017-02-14 | 2017-05-31 | 华侨大学 | The analogy method and device of a kind of Potential of Seabed Under Wave Loading liquefaction water-jet depth |
| CN106768847B (en) * | 2017-02-14 | 2018-11-27 | 华侨大学 | A kind of analogy method and device of Potential of Seabed Under Wave Loading liquefaction water-jet depth |
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| CN103778842B (en) | 2017-01-11 |
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Effective date of registration: 20170810 Address after: 102600 Beijing City Industrial Development Zone Daxing District Keyuan Road No. 18 Co-patentee after: CHINA RAILWAY FIFTH SURVEY AND DESIGN INSTITUTE GROUP Co.,Ltd. Patentee after: F.S.D.I.G CONSTRUCTION MACHINERY Co.,Ltd. Co-patentee after: CHINA RAILWAY 19TH BUREAU GROUP Co.,Ltd. Co-patentee after: BEIJING CRCC NORTH ROAD AND BRIDGE ENGINEERING CO.,LTD. Address before: 102600 Beijing City Industrial Development Zone Daxing District Keyuan Road No. 18 Co-patentee before: CHINA RAILWAY FIFTH SURVEY AND DESIGN INSTITUTE GROUP Co.,Ltd. Patentee before: F.S.D.I.G CONSTRUCTION MACHINERY Co.,Ltd. |