CN207557254U - A kind of controllable temperature body frost heaving experimental rig - Google Patents
A kind of controllable temperature body frost heaving experimental rig Download PDFInfo
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- CN207557254U CN207557254U CN201721797369.5U CN201721797369U CN207557254U CN 207557254 U CN207557254 U CN 207557254U CN 201721797369 U CN201721797369 U CN 201721797369U CN 207557254 U CN207557254 U CN 207557254U
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Abstract
The utility model discloses a kind of controllable temperature body frost heaving experimental rigs, overcome the problems, such as fully simulate soil body field frost heave, including experiment casing (1), environment temperature control system, soil temperature monitoring system, information acquisition system (14) and computer (15).Experiment casing (1) includes main box and soil body sample cylinder (2), and partition board (12) is set in main box；Soil body sample cylinder (2) includes upper plate (3), lower plate (4) and cylinder (5)；2 sets of cooling/heating devices (13) of environment temperature control system and upper plate (3) are connect with the upper cycle liquid pipe (9) of lower plate (4) with lower cycle liquid pipe (10), 4 plug-type temperature sensors (11) of soil temperature monitoring system are inserted into cylinder (5) interior soil body sample, and 4 plug-type temperature sensor (11) information terminals are connect with information acquisition system (14)；Information acquisition system (14) is connect with computer (15).
Description
Technical field
The utility model is related to a kind of experimental rig for belonging to geotechnical engineering test apparatus technical field, more precisely,
The utility model is related to a kind of controllable temperature body frost heaving experimental rigs.
Background technology
Frozen soil its performance characteristic under frost heave action changes where the always difficult point of cyopedology, main reason is that
Actual requirement is not achieved in laboratory test condition, with can not ensureing small error thermostatic control, and can not realize that small temperature gradient changes
Solidification point, so as to cause experiment, time-consuming, and result of the test error is larger, when equipment is when temperature reaches requirement, it is impossible to
Accurately ensure constant temperature effect, and the variation of chamber external environment is affected to experiment the temperature inside the box.Conventional test methods one
As be that a certain temperature is set in general Frozen-thawed cycled case first, then test specimen is directly placed into Frozen-thawed cycled case, is frozen
Knot, but the variation of ambient temperature is affected for Frozen-thawed cycled the temperature inside the box, and using air cooling pair in Frozen-thawed cycled case
Test specimen is freezed, and test specimen is caused to be endured cold unevenness, and last solidification point is larger with envisioning solidification point error.
The frost heave of the soil body is an extremely complex process, it is with the phenomenon that physics, physical chemistry, mechanics and sub- mistake
Journey, the most important accumulation process for including moisture, the transmission of heat, moisture phase transformation and salinity.China is third frozen soil in the world
Big country, ever-frozen ground area 2.15 × 106km2, seasonal frozen ground area 5.14 × 106km2。
Frozen soil is a kind of soil medium extremely sensitive to temperature, along with the accumulation of moisture and salinity in frozen-thaw process,
It in turn results in frost zone and generates frost heave and thaw collapse phenomenon, and certain journey is caused to the build engineering and road and bridge engineering of permafrost region
The destruction of degree, problem of frost heave seriously annoying the service condition of structures on the frozen soil foundation of severe cold area, and documents and materials show to freeze
Bursting badly makes the Permafrost area road lost of life 50%, and considerably increase maintenance costs.
The research of the variation characteristic of soil body physical characteristic is frozen soil engineering, frozen soil agricultural, terrestrial water cycle under the conditions of frost heave
The important content in the fields of grade.It is studied mainly is achieved by indoor simulation and outdoor two kinds of approach of fixed point monitoring, and by
It is costly in outdoor-monitoring, poor repeatability, therefore the domestic measure to frozen soil physical property selects the side of indoor simulation mostly
Formula carries out.
Existing country's frost heave test device has following feature, is that apparatus function is more single first, many frozen soil experiment dresses
One or two index can only be measured by putting.Secondly device cannot simulate soil body field freezing process well mostly, some is ground
Study carefully unit and earth pillar is directly put into refrigerator, the soil body freezes from four circumferential centers, with the top-down temperature-fall period in practical field not
Symbol.Some experimental rig earth pillars are meticulous, and earth pillar diameter is less than 10cm, and tube wall has and influences Freezing Soils outside to inside, also with
The very big difference of field physical presence.
Invention content
Technical problem to be solved in the utility model be overcome it is of the existing technology can not fully simulate the soil body open country
Outer problem of frost heave provides a kind of controllable temperature body frost heaving experimental rig.
In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：Described one kind is controllable
Warm body frost heaving experimental rig includes experiment casing, environment temperature control system, soil temperature monitoring system, information acquisition system
With computer；
The experiment casing includes the main box of cuboid and soil body sample cylinder, and the internal water level land of main box is set
There is partition board；
The soil body sample cylinder is cylindrical shell structure part, and soil body sample cylinder includes upper plate, lower plate and cylinder
Body；Soil body sample cylinder is fixed on by lower plate on the partition board in the middle part of experiment casing；
The identical cooling/heating device of 2 nested structures in environment temperature control system is using upper conduit and downcomer and setting
It is connect in upper plate with the upper cycle liquid pipe inside lower plate with the both ends of lower cycle liquid pipe, the identical cooling/heating dress of 2 nested structures
In the bottom for putting the experiment casing below partition board；The identical plug-in type temperature of 4 structures in soil temperature monitoring system
Degree sensor is inserted into the soil body sample in cylinder, and the information terminal of the identical plug-type temperature sensor of 4 structures passes through
Electric wire is connect with information acquisition system, and information acquisition system is connect with computer by USB.
Upper plate described in technical solution is made of upper plate top half and upper plate lower half portion, upper plate upper half
Part and upper plate lower half portion are the cylindrical hull structural part of open at one end, are set on the head cover of upper plate top half
The upper plate through-hole for having two structures of the upper conduit in installation environment temperature control system identical；
The cavity arrangements of the upper plate lower half portion of the upper plate have upper cycle liquid pipe, the two ends of upper cycle liquid pipe
It is connected with from the lower end of upper conduit that upper plate through-hole is inserted into；
For the upper plate top half spiral-lock into upper plate on upper plate lower half portion, upper plate is cylindrical housings
Structural member, upper plate are made of stainless steel.
Lower plate described in technical solution is made of lower plate top half and lower plate lower half portion, lower plate upper half
Part and the cylindrical hull structural part that lower plate lower half portion is open at one end；
The inner cavity of the lower plate lower half portion is provided with lower cycle liquid pipe, is set on the bottom plate of lower plate lower half portion
Have a downcomer through-hole that the structure of 2 installation downcomers is identical, lower plate top half spiral-lock on lower plate lower half portion into
Lower plate, lower plate are Cylindrical housing structure part, and lower plate is made of stainless steel.
Cylinder described in technical solution is cylinder mode part, the internal diameter and upper plate of cylinder and the outer diameter phase of lower plate
Be 10mm~15mm Deng, wall thickness, be vertically provided with 4 cylinder through-holes on the barrel of cylinder, cylinder through-hole it is a diameter of
20~25mm, the centre distance of adjacent 2 cylinder through-holes is 80~90mm, for containing the cylinder of the soil body to be measured using organic glass
Glass material is made；Lower plate is fixed on by welding manner on the partition board in the middle part of experiment casing, and the bottom end of cylinder is sleeved on bottom
On plate, upper plate is covered on the top of cylinder；The height of soil body sample cylinder is 400~440mm.
The beneficial effects of the utility model are compared with prior art：
1. a kind of environment temperature control system of controllable temperature body frost heaving experimental rig described in the utility model can be abundant
Simulating natural environment frost heave condition, artificially controls temperature, cycle liquid pipe be laid in upper plate on lower plate, make the experiment soil body by
Cold (heat) uniformly, is consistent with natural conditions, improves experiment accuracy；
2. a kind of information acquisition system of controllable temperature body frost heaving experimental rig described in the utility model is according to 4 temperature
The data that sensor transmits can monitor change of temperature field in the soil body, be of great significance for soil body research under the conditions of frost heave.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings：
Fig. 1 is a kind of schematic diagram of controllable temperature body frost heaving experimental rig structure composition described in the utility model；
Fig. 2 is the soil body sample cylinder knot employed in a kind of controllable temperature body frost heaving experimental rig described in the utility model
The axonometric projection view of structure composition；
Fig. 3-1 is the soil body sample cylinder employed in a kind of controllable temperature body frost heaving experimental rig described in the utility model
Upper plate top half structure composition axonometric projection view；
Fig. 3-2 is the soil body sample cylinder employed in a kind of controllable temperature body frost heaving experimental rig described in the utility model
Upper plate lower half portion structure composition axonometric projection view；
Fig. 4-1 is the soil body sample cylinder employed in a kind of controllable temperature body frost heaving experimental rig described in the utility model
Lower plate top half structure composition axonometric projection view；
Fig. 4-2 is the soil body sample cylinder employed in a kind of controllable temperature body frost heaving experimental rig described in the utility model
Lower plate lower half portion structure composition axonometric projection view；
In figure：1. experiment casing, 2. soil body sample cylinders, 3. upper plates, 4. lower plates, 5. cylinders, 6. cylinder through-holes, on 7.
Conduit, 8. downcomers recycle liquid pipe on 9., 10. times cycle liquid pipes, 11. plug-type temperature sensors, 12. partition boards, and 13. refrigeration/
Thermal, 14. information acquisition systems, 15. computers.
Specific embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings：
Refering to Fig. 1, a kind of controllable temperature body frost heaving experimental rig described in the utility model includes experiment casing 1, environment
Temperature control system, soil temperature monitoring system, information acquisition system 14 and computer 15.
The experiment casing 1 includes main box and soil body sample cylinder 2, and main box is the shell structure part of cuboid,
The inner space of experiment casing 1 uses partition board 12 to be divided to for upper and lower two parts；
Refering to Fig. 1 and Fig. 2, the soil body sample cylinder 2 is cylindrical shell structure part, and soil body sample cylinder 2 includes upper
Top plate 3, lower plate 4 and cylinder 5.
Refering to Fig. 3-1 and Fig. 3-2, the upper plate 3 is made of upper plate top half and upper plate lower half portion, on
Top plate top half and the cylindrical hull structural part that upper plate lower half portion is open at one end, the top of upper plate top half
It covers and is provided with the identical upper top cover through-hole of two structures for installing conduit 7.
The inner cavity of the upper plate lower half portion is provided with cycle liquid pipe 9, the two ends of upper cycle liquid pipe 9 with from upper
The lower end of upper conduit 7 that upper top cover through-hole on the head cover of top plate top half is inserted into is connected.
For the upper plate top half spiral-lock into upper plate 3 on upper plate lower half portion, upper plate 3 is circular cylindrical shell
Body structural member, the height of upper plate 3 is 40mm, outer diameter 200mm in embodiment；Upper plate 3 can be moved freely in experiment casing 1
Dynamic, upper plate 3 is made of stainless steel, is transported to cold heat liquid by upper conduit 7 using cooling/heating device 13
Temperature control is realized in cycle liquid pipe 9.
Refering to Fig. 4-1 and Fig. 4-2, the lower plate 4 is made of lower plate top half and lower plate lower half portion, under
Bottom plate top half and the cylindrical hull structural part that lower plate lower half portion is open at one end.
The inner cavity of the lower plate lower half portion be provided with it is lower cycle liquid pipe 10, it is lower cycle liquid pipe 10 head and the tail both ends and
Downcomer 8 connects, and the downcomer through-hole of 2 installation downcomers 8, lower plate upper half are provided on the bottom plate of lower plate lower half portion
For part spiral-lock into lower plate 4 on lower roof plate lower half portion, lower plate 4 is Cylindrical housing structure part, lower plate 4 in embodiment
Height be 40mm, outer diameter 200mm；Cold heat liquid is transported to by lower cycle by downcomer 8 using cooling/heating device 13
Temperature control is realized in liquid pipe 10；Lower plate 4 is fixed on by welding manner on the partition board 12 at 1 middle part of experiment casing, and lower plate 4 uses
Stainless steel is made.
The cylinder 5 is cylinder mode part, is used to contain the soil body to be measured in cylinder 5, cylinder 5 uses organic glass material
Matter is made, and the internal diameter and upper plate 3 of cylinder 5 are equal with the outer diameter of lower plate 4, and wall thickness is 10mm~15mm, on the barrel of cylinder 5
Vertically it is provided with 4 cylinder through-holes 6, a diameter of 20~25mm of cylinder through-hole 6, the center of adjacent 2 cylinder through-holes 6
Distance is 80~90mm.
The height of the soil body sample cylinder 2 is 400~440mm.
The environment temperature control system includes identical cooling/heating device 13, upper conduit 7 and the downcomer of 2 nested structures
8；
The upper conduit 7 and downcomer 8 are connected respectively with a set of cooling/heating device 13；
The cooling/heating device 13 is market standard Air-Cooled Heat Pump Unit, such as beautiful G type air-cooled heat pump module units
Deng；
The identical cooling/heating device 13 of 2 nested structures is placed on the master of the experiment casing 1 of 12 lower section of partition board of experiment casing 1
In the bottom of babinet, the identical cooling/heating device 13 of 2 nested structures is respectively adopted in conduit 7, downcomer 8 and soil body sample cylinder 2
Be arranged on upper plate 3 and the upper cycle liquid pipe 9 inside lower plate 4 and lower cycle liquid pipe 10 is connect.
The cooling/heating device 13 is connect by control terminal with information acquisition system 14 with USB interface；
The soil temperature monitoring system includes the identical plug-type temperature sensor 11 of 4 structures；
The plug-type temperature sensor 11 be market general-purpose type temperature sensor, such as Decagon 5TM temperature pass
Sensor etc., 11 front end of plug-type temperature sensor are stainless steel column body, and middle part is information terminal, information terminal by electric wire with
Information acquisition system connects；
The identical plug-type temperature sensor 11 of 4 structures is connect with information acquisition system 14 by USB interface, plug-in type
Temperature sensor 11 is inserted by cylinder through-hole 6 in the soil body to be measured when using, and data are collected by information acquisition system 14.
The information acquisition system 14 is connect with computer 15 by USB, and information acquisition system 14 is put with computer 15
It puts on the right side of experiment casing 1.
The information acquisition system 14 is the structural member of a cuboid, for market general-purpose type dynamic signal testing point
Analyzer, for example general survey control NUXI-1004/8 dynamic signalling analysis instrument etc. is opened up, processing list is collected in inside containing integrated information
Member, for standard product in the market；
A kind of operation principle of the controllable temperature body frost heaving experimental rig：
In frost heave cyclic test, first 1 top of experiment casing is opened, the cylinder 5 of soil body sample cylinder 2 is placed on the soil body
On the lower plate 4 of test specimen tube 2, soil body sample is fitted into cylinder 5, plug-type temperature sensor 11 is inserted by cylinder through-hole 6
Enter in soil body sample, then cover upper plate 3 on the top of cylinder 5, then close 1 top of experiment casing, start information
Acquisition system 14 and computer 15 are set the temperature of upper plate 3 and lower plate 4 by computer 15, complete experiment.
The foregoing is merely being illustrated with reference to this manufacturing process, this structure is not intended to limit, for the technology of this field
For personnel, the utility model can have various change and change, such as combination, transformation material therefor of multiple entities etc..
Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in this reality
Within novel protection domain.
Claims (4)
- A kind of a kind of 1. controllable temperature body frost heaving experimental rig, which is characterized in that controllable temperature body frost heaving experimental rig Including experiment casing (1), environment temperature control system, soil temperature monitoring system, information acquisition system (14) and computer (15)；Main box of the experiment casing (1) including cuboid and soil body sample cylinder (2), the internal water level land of main box is set It is equipped with partition board (12)；The soil body sample cylinder (2) is cylindrical shell structure part, and soil body sample cylinder (2) includes upper plate (3), lower plate (4) with cylinder (5)；Soil body sample cylinder (2) is fixed on by lower plate (4) on the partition board (12) in the middle part of experiment casing (1)；Conduit (7) and downcomer (8) in identical cooling/heating device (13) use of 2 nested structures in environment temperature control system It is connect with upper plate (3) is arranged on the internal upper cycle liquid pipe (9) of lower plate (4) with the both ends of lower cycle liquid pipe (10), 2 sets In the bottom of experiment casing (1) of the identical cooling/heating device (13) of structure below partition board (12)；Soil temperature monitors The identical plug-type temperature sensor (11) of 4 structures in system is inserted into the soil body sample in cylinder (5), 4 structures The information terminal of identical plug-type temperature sensor (11) is connect by electric wire with information acquisition system (14), information collection system System (14) is connect with computer (15) by USB.
- 2. controllable temperature body frost heaving experimental rig described in accordance with the claim 1, which is characterized in that the upper plate (3) by Upper plate top half is formed with upper plate lower half portion, and upper plate top half and upper plate lower half portion are open at one end Cylindrical hull structural part, the upper conduit being provided on the head cover of upper plate top half in installation environment temperature control system (7) the identical upper plate through-hole of two structures；The cavity arrangements of the upper plate lower half portion of the upper plate (3) have upper cycle liquid pipe (9), upper cycle liquid pipe (9) Two ends are connected with the lower end of upper conduit (7) being inserted into from upper plate through-hole；For the upper plate top half spiral-lock into upper plate (3) on upper plate lower half portion, upper plate (3) is circular cylindrical shell Body structural member, upper plate (3) are made of stainless steel.
- 3. controllable temperature body frost heaving experimental rig described in accordance with the claim 1, which is characterized in that the lower plate (4) by Lower plate top half is formed with lower plate lower half portion, and lower plate top half and lower plate lower half portion are open at one end Cylindrical hull structural part；The inner cavity of the lower plate lower half portion is provided with lower cycle liquid pipe (10), is set on the bottom plate of lower plate lower half portion The downcomer through-hole for having the structure of 2 installation downcomers (8) identical, lower plate top half spiral-lock is on lower plate lower half portion Into lower plate (4), lower plate (4) is Cylindrical housing structure part, and lower plate (4) is made of stainless steel.
- 4. controllable temperature body frost heaving experimental rig described in accordance with the claim 1, which is characterized in that the cylinder (5) is circle Core structure part, the internal diameter and upper plate (3) of cylinder (5) are equal with the outer diameter of lower plate (4), wall thickness be 10mm~15mm, cylinder Vertically it is provided with 4 cylinder through-holes (6) on the barrel of body (5), a diameter of 20~25mm of cylinder through-hole (6), adjacent 2 The centre distance of a cylinder through-hole (6) is 80~90mm, for containing the cylinder of the soil body to be measured (5) using organic glass material system Into；Lower plate (4) is fixed on by welding manner on the partition board (12) in the middle part of experiment casing (1), and the bottom end of cylinder (5) is sleeved on On lower plate (4), upper plate (3) is covered on the top of cylinder (5)；The height of soil body sample cylinder (2) is 400~440mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721797369.5U CN207557254U (en) | 2017-12-21 | 2017-12-21 | A kind of controllable temperature body frost heaving experimental rig |
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| CN201721797369.5U CN207557254U (en) | 2017-12-21 | 2017-12-21 | A kind of controllable temperature body frost heaving experimental rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037268A (en) * | 2017-12-21 | 2018-05-15 | 吉林大学 | A kind of controllable temperature body frost heaving experimental rig |
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2017
- 2017-12-21 CN CN201721797369.5U patent/CN207557254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037268A (en) * | 2017-12-21 | 2018-05-15 | 吉林大学 | A kind of controllable temperature body frost heaving experimental rig |
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