CN107655759A - A kind of consolidation testing device for simulating flux and reflux - Google Patents
A kind of consolidation testing device for simulating flux and reflux Download PDFInfo
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- CN107655759A CN107655759A CN201710757938.1A CN201710757938A CN107655759A CN 107655759 A CN107655759 A CN 107655759A CN 201710757938 A CN201710757938 A CN 201710757938A CN 107655759 A CN107655759 A CN 107655759A
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- displacement meter
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- dial drum
- stone
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/06—Devices for withdrawing samples in the solid state, e.g. by cutting providing a thin slice, e.g. microtome
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of consolidation testing device for simulating flux and reflux, including three data measurin system, loading system and circulation systems, loading system to include：Displacement meter support, scale pan, lid, upper dankness stone, lower permeable stone, lead ring, cutting ring and tank for soil sampling in pressurization, lead ring is placed in tank, it is placed with from bottom to top in lead ring and posts permeable stone and the cutting ring for having taken soil sample under filter paper, the scale pan in the upper dankness stone for posting filter paper and pressurization covering and being further applied load for holding counterweight is sequentially placed in soil sample；Data collecting system includes：Displacement meter support, displacement meter, displacement meter alignment post and computer.
Description
Technical field
The present invention relates to a kind of consolidation testing device for simulating flux and reflux, for obtaining Coastal beach soft soil foundation in tide
Consolidation test parameter under nighttide load action, instructs engineering practice.
Background technology
In the case where developing the coastal and background of marine economy, beach is the important land reserved resources in coastal area, is coastal
The development in area provides wide land resource and space.The Large Infrastructure Projects construction of China coast urban area is in deep beach
Built successively in soft soil foundation.
Research shows that beach weak soil typically belongs to the marine soft soil of thick-layer, and flood tide is flooded, and ebb tide exposes, highest tide water level
Up to 6m.Beach weak soil has the engineering characteristic of " three high two is low ", and moisture content is high, and clay content is high, and compressibility is high, permeability
It is low, low intensity.In liquid to liquid-plastic state, do not possess bearing capacity still.And in work progress, deep beach weak soil
Base usually has little time natural drainage consolidation because the completion time of project is urgent, follow-up settlement Control and construction is caused greatly tired
It is difficult.
Sedimentation is the ring of key one of coastal deep beach soft soil foundation control, meanwhile, sedimentation and Geotechnical Engineering geology calamity
The immediate cause that evil and engineering accident occur, probes into foundation settlement deformation rule usually by means of indoor consolidation in engineering practice
Experiment, consolidation apparatus is the important test apparatus of geotechnical engineering investigation soil test.
Consolidation apparatus can be used for carrying out soil mechanics compression test, evaluate the consolidation and creep deformation properties of the soil body.It can pass through
Compression curve, calculate cake compressibility, the modulus of resilience, the coefficient of consolidation of the soil body etc..The consolidation apparatus used at present mainly has two kinds：It is single
Lever consolidation apparatus and full automatic gas pressure consolidation apparatus.The simple lever consolidation apparatus innovation and creation seventies in last century, using lever principle,
Pass through the artificial loading of counterweight；Full automatic gas pressure consolidation apparatus is innovation and creation at initial stage in this century, is added according to the principle of Pneumatic Transmission
Lotus, have the advantages that convenient and swift.
But there is the problem of the following aspects in mesh first two consolidation apparatus：
(1) instrument is heavy, and floor space is larger；
(2) it can not consider that tide bulge and fall environment changes the influence of the consolidation characteristics to soil.
The content of the invention
In view of the above-mentioned problems, the purpose of the present invention is overcome the deficiencies in the prior art, with reference to site operation specific requirement, carry
For a kind of consolidation testing device for simulating flux and reflux, have the advantages that Consideration is comprehensive, controllability is strong, solve consolidation at present
The limitation that instrument uses.Technical scheme is as follows：
A kind of consolidation testing device for simulating flux and reflux, including data measurin system, loading system and circulation
Three systems, wherein,
Loading system includes：Displacement meter support 5, scale pan 6, lid 8, upper dankness stone 11, lower permeable stone 13, lead ring in pressurization
14th, the cutting ring 15 and tank 9 for soil sampling, lead ring 14 are placed in tank 9, are placed with from bottom to top in lead ring 14 and are posted filter
Permeable stone 13 and the cutting ring 15 for having taken soil sample, are sequentially placed in soil sample on the upper dankness stone 11 and pressurization for posting filter paper under paper
Lid 8 and the scale pan 6 being further applied load for holding counterweight；
Circulation includes：Water inlet dial drum 1, water inlet control valve 4, tank 9, outlet water control valve 10, water outlet dial drum
16 and suction pump, water inlet dial drum 1 is flowed to by water inlet control valve 4 to tank water filling, the water of tank by outlet water control valve 10
Water outlet dial drum 16 below tank, the water in water outlet dial drum 16 is transported into water dial drum 1 using suction pump,
Realize the circulation of water；
Data collecting system includes：Displacement meter support 5, displacement meter 2, displacement meter alignment post 7 and computer, displacement meter alignment post
7 are placed on scale pan 6, and displacement meter 2 is fixedly linked with displacement meter support 5, and are directed at displacement meter alignment post 7；What displacement meter 2 gathered
Displacement signal is admitted to computer.
The present invention provides new thinking for the compression concretion characteristic constructed with the deep beach soft soil foundation of Research Center's research,
The advantages of the following aspects be present：
(1) test apparatus is gently small, and floor space is few, and loading is convenient and reliable；
(2) compression property of deep beach soft soil foundation can be acted on down with tide simulation, beach weak soil can be considered
The compressed coefficient, structural etc..
Brief description of the drawings
Fig. 1 is the consolidation testing device of the simulation flux and reflux of the present invention.
Label declaration in figure：1 water inlet dial drum；2 displacement meters；3 plastic tubes；4 water inlet control valves；5 displacement meter supports；6 weights
Code-disc；7 displacement meter alignment posts；Covered in 8 pressurizations；9 tanks；10 outlet water control valves；11 upper dankness stones；12 soil samples；13 times permeable stones；
14 lead rings；15 cutting rings；16 water outlet dial drums.
Embodiment
The present invention will be described with reference to the accompanying drawings and examples.
Referring to Fig. 1, the consolidation testing device of simulation flux and reflux provided by the invention, the consolidation test of specific flux and reflux
Device mainly includes three data measurin system, loading system and circulation systems.Wherein data collecting system is mainly wrapped
Include：Displacement meter support 5, displacement meter 2, displacement meter alignment post 7, electric wire, data acquisition box and computer.During experiment, displacement
Meter 2 is connected with displacement meter support 5, and is directed at displacement meter alignment post 7；Electric wire will be adopted respectively by displacement meter 2 and data acquisition box
The electric signal of collection is handled through computer and exported, and forms data collecting system.
Loading system mainly includes：Displacement meter support 5, scale pan 6, displacement meter alignment post 7, lid 8, upper dankness stone in pressurization
11st, soil sample 12, lower permeable stone 13, lead ring 14, cutting ring 15 and tank 9.Test in loading procedure, be sequentially placed into and lead in tank 9
Ring 14, lower permeable stone 13 (posting filter paper), the soil sample 12 with cutting ring 15 is fitted into lead ring 14, put successively in soil sample 12
Filter paper, upper dankness stone 11 and the upper lid 8 of pressurization, wherein the upper lid 8 of pressurization welds scale pan 6, are further applied load for holding counterweight.
Circulation mainly includes：Water inlet dial drum 1, plastic tube 3, water inlet control valve 4, tank 9, outlet water control valve
10th, water outlet dial drum 16.During experiment, the water inlet dial drum 1 for filling with water is adjusted in plastic tube 3 by water inlet control valve 4
Water flow into the speed of tank 9, and by the speed of the adjusting water outlet of outlet valve 10, the water in plastic tube 3 is flowed into water outlet scale
In cylinder 16；And the water in water outlet dial drum 16 is transported into water dial drum 1 using suction pump, realize the circulation of water.
Test procedure：
(1) according to requirement of engineering, the disturbance sample that undisturbed sample or be prepared into meets code requirement is cut using cutting ring.
(2) lead ring 14, lower permeable stone 13 (posting filter paper) are sequentially placed into tank 9, by the soil sample 12 with cutting ring 15
Be fitted into lead ring 14, put successively in soil sample 12 filter paper, upper dankness stone 11 and pressurization on lid 8.Displacement meter support 5 and position are installed
Meter 2 is moved, displacement meter 2 is aligned with displacement meter alignment post 7.
(3) it is put into counterweight according to loading requirement in scale pan 6 according to earthwork test rule SL237-1999.
(4) during load applies, water should be filled up in dial drum 1 of intaking, and adjust into water speed by water inlet control valve 4
Degree, simulate the time of flood tide.
(5) after certain time, by outlet water control valve 10 come adjusting water outlet speed, simulation ebb tide time.(pay attention to：Water filling
System is independently of loading system)
(6) off-test, the water in tank 9 is suctioned out, removes instrument component, take out band cutting ring soil sample 12.
Claims (1)
1. a kind of consolidation testing device for simulating flux and reflux, including data measurin system, loading system and circulation three
Individual system, wherein,
Loading system includes：Displacement meter support (5), scale pan (6), (8), upper dankness stone (11), lower permeable stone are covered in pressurization
(13), lead ring (14), cutting ring (15) and tank (9) for soil sampling, lead ring (14) is placed in tank (9), in lead ring (14)
The cutting ring (15) for posting permeable stone under filter paper (13) and having taken soil sample is inside placed with from bottom to top, and patch has been sequentially placed in soil sample
Have and (8) and the scale pan (6) being further applied load for holding counterweight are covered on the upper dankness stone (11) and pressurization of filter paper；
Circulation includes：Intake dial drum (1), water inlet control valve (4), tank (9), outlet water control valve (10), water outlet quarter
Cylinder (16) and suction pump are spent, water inlet dial drum (1) is by water inlet control valve (4) to tank water filling, and the water of tank is by going out water control
The water outlet dial drum (16) that valve (10) processed is flowed to below tank, the water in water outlet dial drum (16) is conveyed using suction pump
Into water inlet dial drum (1), the circulation of water is realized；
Data collecting system includes：Displacement meter support (5), displacement meter (2), displacement meter alignment post (7) and computer, displacement meter alignment
Post (7) is placed on scale pan (6), and displacement meter (2) is fixedly linked with displacement meter support (5), and is directed at displacement meter alignment post (7)；
The displacement signal of displacement meter (2) collection is admitted to computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757938.1A CN107655759A (en) | 2017-08-29 | 2017-08-29 | A kind of consolidation testing device for simulating flux and reflux |
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|---|---|---|---|
| CN201710757938.1A CN107655759A (en) | 2017-08-29 | 2017-08-29 | A kind of consolidation testing device for simulating flux and reflux |
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| CN107655759A true CN107655759A (en) | 2018-02-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580914A (en) * | 2019-01-15 | 2019-04-05 | 三峡大学 | A kind of dynamic water circulation and rock argillization process simulation device and test method under loading condition |
| CN115100939A (en) * | 2022-02-22 | 2022-09-23 | 温州大学 | Coastal city coastal tide fluctuation simulation device and test method thereof |
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2017
- 2017-08-29 CN CN201710757938.1A patent/CN107655759A/en active Pending
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| CN106759236A (en) * | 2016-11-18 | 2017-05-31 | 天津城建大学 | Tidal cycle load consolidates weak soil experimental rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580914A (en) * | 2019-01-15 | 2019-04-05 | 三峡大学 | A kind of dynamic water circulation and rock argillization process simulation device and test method under loading condition |
| CN109580914B (en) * | 2019-01-15 | 2021-11-02 | 三峡大学 | Rock argillization process simulation device and test method under dynamic water circulation and load conditions |
| CN115100939A (en) * | 2022-02-22 | 2022-09-23 | 温州大学 | Coastal city coastal tide fluctuation simulation device and test method thereof |
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