CN206459930U - One kind infiltration gas pressure consolidation instrument - Google Patents

One kind infiltration gas pressure consolidation instrument Download PDF

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Publication number
CN206459930U
CN206459930U CN201621275622.6U CN201621275622U CN206459930U CN 206459930 U CN206459930 U CN 206459930U CN 201621275622 U CN201621275622 U CN 201621275622U CN 206459930 U CN206459930 U CN 206459930U
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base
pressure
soil sample
soft rubber
cover plate
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CN201621275622.6U
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雷华阳
冯双喜
王铁英
李鑫
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Tianjin University
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Tianjin University
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Abstract

The utility model discloses a kind of infiltration gas pressure consolidation instrument, including base, pass through cover plate of the supports support on base, scale storage tank, graduated cylinder, device for exerting and computer, chassis interior is provided with cavity, cavity is communicated to scale storage tank by water inlet pipe, and communicated with base air bleeding valve, the through hole being connected with cavity is offered on the top of base, lower permeable stone is placed in submounts, soil sample is placed between upper dankness stone and lower permeable stone, soil sample is placed in the soft rubber of upper and lower opening set, and upper dankness stone is placed in above soil sample;Described device for exerting includes pressure axle, the jacking being placed on pressure axle and the counterweight being placed on jacking;The periphery covered in soft rubber is provided with air bag;Displacement meter is provided with the cover board, air gauge is provided with air bag, and pressure sensor is provided with soft rubber set.

Description

One kind infiltration gas pressure consolidation instrument
Technical field
The utility model is related to a kind of infiltration gas pressure consolidation instrument.
Background technology
Under the background that urbanization process is accelerated, all kinds of Large Infrastructure Projects in China coast urban area successively soft glutinous Engineering construction is carried out in soil base, over time, various engineering problems often occurs, even results in and build (structure) Build thing and different degrees of destruction occur.Sedimentation is the immediate cause that Geotechnical Engineering geological disaster and engineering accident occur, in engineering Foundation settlement deformation rule is probed into practice usually by means of indoor consolidation test, consolidation apparatus is geotechnical engineering investigation soil test Important test apparatus.
Consolidation apparatus can evaluate the consolidation and creep deformation properties of the soil body for carrying out soil mechanics compression test.It can pass through Compression curve, calculates cake compressibility, the modulus of resilience, 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.Simple lever consolidation apparatus is the innovation and creation seventies in last century, former using lever Reason, passes through the artificial loading of counterweight;Full automatic gas pressure consolidation apparatus is innovation and creation at initial stage in this century, according to the principle of Pneumatic Transmission Loading, has the advantages that convenient and swift.
Also part experts and scholars invent and design seepage consolidation instrument, (2015) are to seepage flow such as Zhou Aihong Consolidation apparatus, which carries out transformation, can determine the infiltration coefficient and the compressed coefficient under correspondence void ratio simultaneously;Perhaps graceful (2014), Zhong Qian Pretty (2011) Nie Liangzuo (2010) has carried out appearance design to seepage consolidation instrument;Plum pacifies (2009) to combining hyperosmosis characteristic It has developed high-pressure permeability consolidometer.
But in engineering practice, intertidal zone (beach area) subgrade engineering, port and pier engineering, high earth-rock works and All there is hyperosmosis, and soil body sidewise restraint and non-rigid restraint in research certain limit in the soil body of waterway engineering, be There is certain elasticity, traditional permeability consolidometer can not truly reflect that the hydromechanical coupling of soil is made to a certain extent With the consolidation characteristics of the lower soil body, there is the limitation of following two aspects:
(1) instrument is heavy, and floor space is larger;
(2) because the rigid constraint of cutting ring is acted on, it is impossible to truly expressed soil lateral characteristic.
Based on above-mentioned situation, necessary research and development one kind is under the conditions of flexible constraint and under hyperosmosis effect, and the soil body is solid Tie experimental rig.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to overcome the deficiencies in the prior art, Thief zone is born with reference to the soil body Pressure and the characteristics of allow lateral deformation it is simple there is provided a kind of test operation, have the advantages that Consideration more comprehensively, controllability it is strong Infiltration gas pressure consolidation instrument, infiltration gas pressure consolidation instrument of the present utility model can simulate soil body penetration field-stress field coupling Lower Consolidation Deformation Character and lateral deformation rule.The technical solution of the utility model is as follows:
One kind infiltration gas pressure consolidation instrument, including base 5, pass through cover plate 15 of the supports support on base 5, scale water storage Case 7, graduated cylinder 23, device for exerting and computer 6, it is characterised in that:
Base 5 is internally provided with cavity, and cavity is communicated to scale storage tank 7 by water inlet pipe 4, and with base air bleeding valve 3 Communicate, the through hole being connected with cavity is offered on the top of base 5, lower permeable stone 9 is placed in above base 5, in the He of upper dankness stone 8 Soil sample is placed between lower permeable stone 9, soil sample is placed in the soft rubber of upper and lower opening set, and upper dankness stone 8 is placed in above soil sample, is claimed Space between upper dankness stone 8, lower permeable stone 9 and soft rubber set is soil sample balancing gate pit 12;
Described device for exerting includes pressure axle 18, the jacking 16 being placed on pressure axle 18 and the weight being placed on jacking 16 Code 17, offers for the through hole through pressure axle 18 on cover plate 15, is tightly connected, presses between cover plate 15 and pressure axle 18 Axle 18 is placed on cover plate 15, and the delivery port 22 for being connected to graduated cylinder 23 is provided with cover plate 15;
The periphery covered in soft rubber is fixed with the airbag chamber 10 for placing air bag 11, and intake valve is offered on air bag 11 1 and inlet valve 2;
Displacement meter 14 is provided with the cover board, air gauge 13 is provided with air bag 11, is provided with soft rubber set 21 Pressure sensor 20;The data that air gauge 13, displacement meter 14 and pressure sensor 20 are gathered are admitted to computer 6.
Infiltration gas pressure consolidation instrument of the present utility model is for soil body penetration Consolidation Deformation Character and soil lateral etc. Feature and design, compared with prior art with advantages below:
(1) test apparatus is gently small, and floor space is few, loads convenient and reliable;
(2) influence of the consolidation characteristics of the soil body under the conditions of hyperosmosis can be simulated, can integrate and examine seepage field-stress field Under coupling, weak soil pore pressure, void ratio and deformation mechanism etc.;
(3) sidewise restraint is air bag, for flexible constraint, can simulate triaxial test, realize K0Consolidate and wait to consolidation.
Brief description of the drawings
Fig. 1 is infiltration gas pressure consolidation instrument schematic diagram of structure of the present utility model.
Fig. 2 is infiltration gas pressure consolidation instrument schematic three dimensional views of the present utility model.
Fig. 3 is infiltration gas pressure consolidation instrument foil gauge of the present utility model or the signal of pressure sensor location for paste local structure Figure.
Label declaration in figure:1 intake valve;2 inlet valves;3 base air bleeding valves;4 water inlet pipes;5 bases;6 computers;7 scales Storage tank;8 upper dankness stones;9 times permeable stones;10 airbag chambers;11 air bags;12 soil sample balancing gate pits;13 air gauges;14 displacement meters;15 Cover plate;16 jackings;17 counterweights;18 pressure axles;19 foil gauges or pressure sensor location for paste;20 foil gauges/pressure sensor; 21 soft rubber sets;22 delivery ports;23 graduated cylinders.
Embodiment
The utility model is illustrated with reference to the accompanying drawings and examples.
Referring to Fig. 1 and Fig. 2, the infiltration gas pressure consolidation instrument that the utility model is provided, specifically include intake valve 1, inlet valve 2, Base air bleeding valve 3, water inlet pipe 4, base 5, computer 6, scale storage tank 7, upper dankness stone 8, lower permeable stone 9, airbag chamber 10, gas Capsule 11, soil sample balancing gate pit 12, air gauge 13, displacement meter 14, cover plate 15, jacking 16, counterweight 17, pressure axle 18, delivery port 22, amount Cylinder 23.
Water inlet pipe 4 and the phase of base air bleeding valve 3 that infiltration gas pressure consolidation instrument base 5 is connected with water-filled scale storage tank 7 It is logical;Lower permeable stone, soil sample and upper dankness stone are sequentially placed into soil sample balancing gate pit 12 from the lower to the upper;Offered on cover plate 15 For the through hole through pressure axle 18, it is tightly connected, upper dankness stone and can moves freely between cover plate 15 and pressure axle 18 The axle 18 that presses is connected, and delivery port 22 is offered on cover plate 15, delivery port 22 is connected with graduated cylinder 23;The top of pressure axle is with being placed with The jacking 16 of counterweight 17 is connected with displacement meter 14;Air gauge 13, displacement meter 14 and foil gauge/pressure sensor 20 are adopted by data Storage is connected with computer 6.
Air bag applies confined pressure to soil sample balancing gate pit 12, mainly connects air bag 11 by air inlet 1, be connected pressure with air bag 11 Table 13 is controlled.Inlet valve 2 can cause air bag 11 fully to be contacted with the soil sample of soil sample balancing gate pit 12.
Referring to Fig. 3, the foil gauge of infiltration gas pressure consolidation instrument of the present utility model or pressure sensor location for paste, specific bag Include foil gauge/pressure sensor 20, soft rubber set 21, computer 6., it is necessary to use soft rubber before soil sample balancing gate pit 12 is put into Set 21 wraps up soil sample, and is pasting foil gauge/pressure sensor 20 thereon, and is connected by data acquisition unit with computer 6.
Test procedure
(1) before on-test, computer 6 is opened, and water is filled in scale storage tank 7, and records scale reading, and by soil Sample soft rubber set 21 is entangled, and places upper dankness stone 8 and lower permeable stone 9 at it.
(2) need the air emptying of the cavity of base 5 by water inlet pipe reclaimed water, untill water occurs in base air bleeding valve 3;
(3) base air bleeding valve 3 is closed, intake valve 1 and inlet valve 2 is opened so that air bag 11 and cavity wall in airbag chamber 10 Contact, the confined pressure value that the display of pressure gauge 13 applies, can specifically be determined according to testing program;
(4) bottom of pressure axle 18 is fully contacted with upper dankness stone 8, and apply counterweight 17 on jacking 16, can basis Testing program is specifically determined;
(5) consolidation time is determined according to earthwork test rule (SL237-1999);
(6) off-test, should record the water yield in the unit interval, according to Darcy's law calculation permeability coefficient.
(7) after off-test, first intake valve 1 should be opened, then by counterweight 17, pressure axle 18, upper dankness stone 8, soil sample Unload successively.

Claims (1)

1. one kind infiltration gas pressure consolidation instrument, including base (5), pass through cover plate (15) of the supports support on base (5), scale Storage tank (7), graduated cylinder (23), device for exerting and computer (6), it is characterised in that:
Base (5) is internally provided with cavity, and cavity is communicated to scale storage tank (7) by water inlet pipe (4), and with base air bleeding valve (3) communicate, the through hole being connected with cavity is offered on the top of base (5), lower permeable stone (9) is placed in base (5) above, upper Soil sample is placed between permeable stone (8) and lower permeable stone (9), soil sample is placed in the soft rubber of upper and lower opening set, upper dankness stone (8) It is placed in above soil sample, the space deserved to be called between permeable stone (8), lower permeable stone (9) and soft rubber set is soil sample balancing gate pit (12);
Described device for exerting includes pressure axle (18), the jacking (16) being placed on pressure axle (18) and is placed on jacking (16) Counterweight (17), offered on cover plate (15) for through pressure axle (18) through hole, cover plate (15) with pressure axle (18) it Between be tightly connected, pressure axle (18) be placed on cover plate (15), the delivery port for being connected to graduated cylinder (23) is provided with cover plate (15) (22);
The periphery covered in soft rubber is fixed with the airbag chamber (10) for placing air bag (11), and air inlet is offered on air bag (11) Valve (1) and inlet valve (2);
Displacement meter (14) is provided with the cover board, air gauge (13) is provided with air bag (11), is set on soft rubber set (21) It is equipped with pressure sensor (20);The data of air gauge (13), displacement meter (14) and pressure sensor (20) collection are admitted to calculating Machine (6).
CN201621275622.6U 2016-11-25 2016-11-25 One kind infiltration gas pressure consolidation instrument Active CN206459930U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621275622.6U CN206459930U (en) 2016-11-25 2016-11-25 One kind infiltration gas pressure consolidation instrument

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Application Number Priority Date Filing Date Title
CN201621275622.6U CN206459930U (en) 2016-11-25 2016-11-25 One kind infiltration gas pressure consolidation instrument

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CN206459930U true CN206459930U (en) 2017-09-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107991211A (en) * 2017-10-20 2018-05-04 四川大学 A kind of irregular sample coefficient of permeability tester of difference hydraulic condition and test method
CN110487988A (en) * 2019-08-16 2019-11-22 合肥工业大学 A kind of air pressure-loading type one-dimensional consolidation infiltration joint test device
CN111006951A (en) * 2019-11-14 2020-04-14 湖南大学 Indoor grouting test device and simulated grouting test method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107991211A (en) * 2017-10-20 2018-05-04 四川大学 A kind of irregular sample coefficient of permeability tester of difference hydraulic condition and test method
CN110487988A (en) * 2019-08-16 2019-11-22 合肥工业大学 A kind of air pressure-loading type one-dimensional consolidation infiltration joint test device
CN111006951A (en) * 2019-11-14 2020-04-14 湖南大学 Indoor grouting test device and simulated grouting test method

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