CN103778842B - 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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- CN103778842B CN103778842B CN201410069113.7A CN201410069113A CN103778842B CN 103778842 B CN103778842 B CN 103778842B CN 201410069113 A CN201410069113 A CN 201410069113A CN 103778842 B CN103778842 B CN 103778842B
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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 present invention relates to the experimental provision of sand liquefaction after a kind of earthquake, particularly relate to a kind of tailored version liquefaction of sand experiment and drill
Show system.
Background technology
At present, on the earth, still earthquake takes place frequently, and as a example by Beijing, Beijing area is located in the east of North China Plate, against Tan (a state in the Zhou Dynasty)
Hut major rupture, is affected by Pacific Plate subduction, is the active region of earthquake.Owing to Pekinese's building major part build Gu in
On old Yongdinghe River alluvial fan, there are the material conditions of earthquake stonebrash liquefaction.After earthquake disaster occurs, for building
The maximum key element of destructive power is setting of ground and the house crack caused after sand liquefaction and collapses.Current capital accelerates city
Building and develop to surrounding area, groups of building are to development in pluralism, and in some areas, skyscraper is built more and more, more build more
Height, has increased the weight of the carrying burden in soil.Under the new situation, from environmental conservation with prevent and reduce natural disasters angle, planning and construction of the city
In be necessary the distribution in Study of Seismic sand liquefaction district, provide reliable scientific basis for urban construction safety.Earthquake system
The performance of a kind of geodynamic effect, it causes instantaneous catastrophic event.When Modern seismic occurs, except showing as house
Collapse, destroy road, cause outside a series of disasters such as fire, also cause modern sand liquefaction (i.e. to sandblast and emit in deposit
Water), ground cracking (ground fissure) etc..
Three class experts are had the present age to be concerned about Seismic Problems:
1) seismologist's attention concentrates dry earthquake prediction (at a specified future date, recent and imminent earthquake)；
2) Seismology and Geology scholar concentrates in the tectonic setting that earthquake occurs, and provides the most detailed for earthquake prediction
Thin geologic setting data；
3) building scholar only notes the anti-seismic performance of constructure inner structure.
Sandy soil under only ecoenvironmental geology man focuses more on building produce flowing because of liquefaction, cause building to fall
The serious problems collapsed.Owing to, in certain distance around earthquake epicenter, deposit easily produces earthquake liquefaction, to the modern times
Urban architecture facility destroys greatly, and liquefaction of sand problem is directly connected to people's life and property peace as earthquake intensity
Entirely, it should cause the concern of more and more people.
The liquefaction of sand impact on Beijing Urban Construction: ancient city of Beijing build that lake is numerous in and ancient Yongdinghe River alluvial fan wet
On the ground, the few tall and big house of building, and be mostly timber framed construction complete be main Chinese courtyard house, shock resistance is extremely strong.But
It is that, along with the development of after liberation urban construction, ancient Beijing occurs huge change.Building is many, story height, right
The static pressure on ground increases thousands of times.Owing to Beijing is located in meizoseismal area, once possesses above-mentioned earthquake liquefaction of sand bar
Part, ground will occur uneven subsidence, and its ground skyscraper will be it may happen that tilt even to collapse.
In existing art, it is all a part of phenomenon with artificial method demonstration earthquake stonebrash liquefaction, artifical influence factor is big,
Data stability is poor, can not play research effect.
Summary of the invention
It is an object of the invention to provide a kind of tailored version liquefaction of sand experimental demonstration system that can demonstrate earthquake stonebrash liquefaction.
It is an object of the invention to be achieved through the following technical solutions:
The tailored version liquefaction of sand experimental demonstration system of the present invention, including base vibration table, sand room, described sand room leads to
Crossing hanger suspending above described base vibration table, the bottom of described sand room is provided with funnel, and described suspension bracket is fixed on institute
State on base vibration table.
As seen from the above technical solution provided by the invention, the tailored version liquefaction of sand experiment that the embodiment of the present invention provides
Demo system, owing to including base vibration table, sand room, sand room by hanger suspending above base vibration table,
The bottom of sand room is provided with funnel, and suspension bracket is fixed on base vibration 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 vibration table, 2, funnel, 3, sand room, 4, suspension bracket.
Detailed description of the invention
The embodiment of the present invention will be described in further detail below.
The tailored version liquefaction of sand experimental demonstration system of the present invention, its preferably detailed description of the invention is:
Including base vibration table, sand room, described sand room by hanger suspending above described base vibration table, institute
The bottom stating sand room is provided with funnel, and described suspension bracket is fixed on described base vibration table.
The sidewall of described sand room is transparent material.
Described sand indoor are provided with soil pressure case.
Described base vibration table is provided with vibrating motor, and described vibrating motor is provided with variable-frequency governor.
Described sand room is provided with the regulation of upper and lower amplitude and locking device and horizontal vibration amplitude regulation and locking device.
During earthquake, due to moment suddenly by the strong effect of brisance hugely, the interstitial water in sandy soil layer has little time row
Going out, space pressure raises suddenly, causes sandy soil layer to present suddenly the physical form of liquid, under causing foundation bearing capacity significantly
Fall, makes above ground structure sink in the drift sand formed, produces and destroy greatly.It is generally believed that sandblasting during earthquake emits
Water phenomenon, is also that the sandy soil layer being embedded in underground produces the result liquefied.The tailored version liquefaction of sand experimental demonstration system of the present invention
System, can truly reflect nature liquefaction of sand phenomenon, can regulate frequency of vibration by frequency control, reaches expection effect
Really, soil pressure case is used to observe variable condition before and after soil pressure.It is the most convenient that equipment integrated design makes to construct.
The design of plant capacity minimization is greatly lowered use cost.Can regulate and locking level and upper and lower amplitude, make laboratory
Equipment is greatly lowered noise.
In concrete application, electric supply installation can be more than 10kw 380v power current.
The present invention can not only clearly show the Nature Disasters, it is also possible to carries out various experiment, thus understands sandy soil liquid
Change Producing reason, method can be researched and solved.Traditional Man demonstration can be solved, directly study at big-and-middle college teaching
And training organization shows natural disaster, simple to operate, it is simple to popularization and application.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replace
Change, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with claims
Protection domain is as the criterion.
Claims (4)
1. a tailored version liquefaction of sand experimental demonstration system, it is characterised in that include base vibration table, sand room, institute
State sand room by hanger suspending above described base vibration table, the bottom of described sand room is provided with funnel, described in hang
Frame is fixed on described base vibration table；
Described sand room is provided with the regulation of upper and lower amplitude and locking device and horizontal vibration amplitude regulation and locking device.
Tailored version liquefaction of sand experimental demonstration system the most according to claim 1, it is characterised in that described sand room
Sidewall be transparent material.
Tailored version liquefaction of sand experimental demonstration system the most according to claim 2, it is characterised in that described sand room
Inside it is provided with soil pressure case.
4. according to the tailored version liquefaction of sand experimental demonstration system described in claim 1,2 or 3, it is characterised in that described
Base vibration table is provided with vibrating motor, and described vibrating motor is provided with variable-frequency governor.
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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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| CN201410069113.7A CN103778842B (en) | 2014-02-27 | 2014-02-27 | Special demonstration system of experiment of liquefaction of sand |
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| CN103778842A CN103778842A (en) | 2014-05-07 |
| CN103778842B true CN103778842B (en) | 2017-01-11 |
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Families Citing this family (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 |
| 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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| 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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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN103778842A (en) | 2014-05-07 |
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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 Ltd. Patentee after: Beijing Railway NO.5 Institute Engineering Machinery Co., Ltd. Co-patentee after: China Railway 19th Bureau Group Co., Ltd. Co-patentee after: Beijing China Railway Construction Northern Road & Bridge Corporation 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 Ltd. Patentee before: Beijing Railway NO.5 Institute Engineering Machinery Co., Ltd. |
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