CN208313720U - A kind of simple rock weathering, creep integration experimental rig - Google Patents
A kind of simple rock weathering, creep integration experimental rig Download PDFInfo
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- CN208313720U CN208313720U CN201820058705.2U CN201820058705U CN208313720U CN 208313720 U CN208313720 U CN 208313720U CN 201820058705 U CN201820058705 U CN 201820058705U CN 208313720 U CN208313720 U CN 208313720U
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- 239000011435 rock Substances 0.000 title claims abstract description 119
- 230000010354 integration Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000011068 loading method Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 15
- 230000001351 cycling effect Effects 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims description 14
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- 239000010959 steel Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
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- 230000007774 longterm Effects 0.000 description 7
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- 230000008569 process Effects 0.000 description 4
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- 238000006253 efflorescence Methods 0.000 description 3
- 206010037844 rash Diseases 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
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- 238000011156 evaluation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
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- 238000006386 neutralization reaction Methods 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
A kind of simple rock weathering, creep integration experimental rig, the device can be used for carrying out the creep test that stable dead load acts on lower rock, and it carries out atmospheric disintegration of rocks test simultaneously during creep test, realizes the long time creep test of rock under " stablizing dead load-drying and watering cycle or cold cycling " coupling.It includes sample container system, lever loading mechanism, water circulation system and blower system.Sample container system has the heating device that rock sample is formed the hole cylinder shape bucket of sidewise restraint and heated to rock sample, water circulation system humidifies rock sample, blower system is dried and cools down to rock sample, and rock sample is made to realize drying and watering cycle and cold cycling.Lever loading mechanism vertically acts on rock sample, and constant weight load, unloading are carried out to it.
Description
Technical field
The utility model relates to rock property test device and method, especially one kind can carry out rock laterally about
Beam, the lower deformation of creep experimental rig with efflorescence of xial feed effect.
Background technique
Currently, China express railway operating mileage reaches 2.2 ten thousand kilometers, rank the first in the world.Meanwhile there are also a large amount of routes
It is building, is being up to 3.0 ten thousand kilometers to the year two thousand twenty.High-speed railway has become a beautiful business card in China, in " a band one
Very important status is play in the construction of road ".The construction of high-speed railway is related to a large amount of rock engineerings, including rock matter heavy cut
Excavation, deep tunnel excavation, bridge Deep Foundation Excavation etc., these all must be set up in clear understanding Related Rocks physical mechanics
On the basis of performance.Among these, under rock occurs under external environmental activity weathering phenomenon and load action over time
The deformation of creep of generation is to influence the key factor of High Speed Rail Projects structural stability.How effective evaluation atmospheric disintegration of rocks is special
Property and creep properties, have become High Speed Rail Projects construction an important topic.
Natural rock in nature, occurrence status change with engineering construction, locating stress state and outside
Environment can all send out change, so that rock physics mechanical property be made to change, and generate in short term and long-term deformation, rock this
A little deformations are an important factor for influencing High Speed Rail Projects structural stability, and especially long-term continuous deformation will seriously threaten height
Fast rail track operation security.Slacking is the main reason for causing rock physics mechanical property to change, currently, rock weathering
The variation of environment in nature is generally simulated in the research of characteristic by indoor drying and watering cycle or cold cycling, rock it is long-term
Deformation behaviour is then simulated using indoor creep test, and deformation behaviour of the specific rock under action of long-term load is obtained.?
That is existing research is to carry out test respectively and obtain respective object two process independent studies of atmospheric disintegration of rocks and creep
Mechanical characteristics and its changing rule are managed, this is not obviously inconsistent with the virtual condition of rock.The actual situation is that preservation is in nature
Rock in boundary, slacking and the deformation of creep are simultaneous under external environmental activity.Under load action steady in a long-term
The deformation process of rock is the efflorescence along with rock itself, and efflorescence causes changing for physical-mechanical properties of rock
Become, in reflection to the change of rock TERM DEFORMATION characteristic namely rock is in external environment change drying and watering cycle, cold cycling and lotus
Carry the process that TERM DEFORMATION is generated under coupling.Therefore, more reasonable test should be during creep of rock test
Atmospheric disintegration of rocks test is carried out simultaneously, i.e. rock " weathering-creep " is tested, rock in the test result and engineering being achieved in that
Practical long-term deformation behaviour is more coincide, and test result can be used for the evaluation and prediction of rock engineering structure long-time stable.
In addition, existing creep of rock experimental rig will realize prolonged dead load effect, realized often through electrohydraulic servo system,
And very high to system control precision and stability requirement, to also testing equipment be made to involve great expense, testing expenses are high, and by
In the difference of experimental condition and actual conditions, test result is difficult to be directly used in high-speed railway cutting, tunnel, bridge foundation etc. again
Excavation caused by structure TERM DEFORMATION evaluate.Therefore, rock is accurately grasped to have with the creep deformation properties under slacking
It is significant, and it is necessary to develop a kind of simple rock weathering-creep integration pilot system.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of simple rock weatherings, creep integration test dress
It sets, which can be used for carrying out the creep test that stable dead load acts on lower rock, and during creep test simultaneously
Atmospheric disintegration of rocks test is carried out, rock is long-term compacted under realization " stablizing dead load-drying and watering cycle or cold cycling " coupling
Become test.
It is as follows that the utility model solves technical solution used by its technical problem:
A kind of simple rock weathering of the utility model, creep integration experimental rig, it is characterized in that: it includes sample container
System, lever loading mechanism, water circulation system and blower system；The sample container system, which has, forms laterally rock sample
The hole cylinder shape bucket of constraint and the heating device heated to rock sample, the water circulation system carry out rock sample
Humidification, the blower system are dried and cool down to rock sample, and rock sample is made to realize drying and watering cycle and cold cycling；Institute
It states lever loading mechanism and vertically acts on rock sample, constant weight load, unloading are carried out to it.
The beneficial effects of the utility model are mainly reflected in following aspects:
1, rock sample is applied using lever loading mechanism and stablizes vertical pressure, loaded with traditional manual hydraulic jack
Mode is compared, and weight linear meter thick stick on-load pressure the case where increasing or reducing will not occur as rock sample deforms, and is realized permanent
Reloading；And compared with electrohydraulic servo-controlling system, the utility model load and test process control are very simple, equipment manufacturing cost
It is cheap, and several groups parallel test can be carried out simultaneously, the efficiency of creep test is substantially increased, more accurate examination is obtained
Test result；
2, by simply changing test process, it can also realize and vertically unload creep examination under sidewise restraint to rock sample
Test, slacking test under the slacking test under rock certain pressure, rock vertically unload etc. and weathering under rock load action and
The relevant test of creep；
3, structure is simple, and disassembly is easy to assembly, cheap, is very suitable for the more simple and crude engineering site test of condition
Room, while carrying out a large amount of rock weatherings, creep test, test efficiency is greatly improved, there is wide promotion prospect.
Detailed description of the invention
The utility model includes following five width attached drawing:
Fig. 1 is the perspective view of a kind of simple rock weathering of the utility model, creep integration experimental rig；
Fig. 2 is the main view of a kind of simple rock weathering of the utility model, creep integration experimental rig；
Fig. 3 is a kind of simple rock weathering of the utility model, sample containment system cuts open in creep integration experimental rig
View；
Fig. 4 is a kind of simple rock weathering of the utility model, sample containment system bows in creep integration experimental rig
View；
Fig. 5 be a kind of simple rock weathering of the utility model, in creep integration experimental rig lever loading mechanism knot
Structure schematic diagram；
Component, position and corresponding label in figure: portal frame 10, column 11, sample container system 20, quadrangle box
21, water injection hole 22, drainage hole 23, air inlet 24, rectangular heating plate 25, rectangular permeable stone 26, hole cylinder shape bucket 27, with holes
Cylindrical heater plate 28, upper round permeable stone 29, lower round permeable stone 30, circular steel cushion block 31, lever loading mechanism 40, crossbeam
41, U-shaped movable ram 42, bearing 43, arc groove cushion block 44, solid cylindrical roller bearing 45, amesdial 46, sunpender 47, counterweight
Counterweight 48, water circulation system 51, blower system 52.
Specific embodiment
Make the description of a step to the utility model below with reference to drawings and examples.
Referring to Figures 1 and 2, a kind of simple rock weathering of the utility model, creep integration experimental rig include sample
Containment system 20, lever loading mechanism 40, water circulation system 51 and blower system 52.The sample container system 20 have pair
Rock sample forms the hole cylinder shape bucket 27 of sidewise restraint and to the heating device that rock sample is heated, the water circulation
System 51 humidifies rock sample, and the blower system 52 is dried and cools down to rock sample, keeps rock sample real
Existing drying and watering cycle and cold cycling；The lever loading mechanism 40 vertically acts on rock sample, and constant weight load is carried out to it, is unloaded
It carries.
Referring to Fig.1, the portal frame 10, lever loading mechanism 40, sample container system 20 are horizontally arranged at interval, each door
Formula frame 10 connects to form whole frame by crossbar member, can carry out multiple groups rock weathering, creep test simultaneously, greatly improve
Test efficiency.
Referring to Fig. 2 and Fig. 5, the lever loading mechanism 40 includes that one end is articulated with the cross on 10 column 11 of portal frame
Beam 41, the other end of crossbeam 41 and the sunpender 47 for carrying weights 48 are hinged, are hingedly set on crossbeam 41 by bearing 43
U-shaped movable ram 42 is set, U-shaped movable ram 42 is vertically acted on by solid cylindrical roller bearing 45, the arc groove cushion block 44 under it
In rock sample.Referring to Fig. 5, installation is horizontally through the pin shaft of crossbeam 41 on 43 inner hole of bearing, in lateral the two of crossbeam 41
An amesdial 46 is respectively arranged in side, and amesdial 46 is fixed on portal frame 10 by Magnetic gauge stand, and measuring head contact is in pin shaft
On, the vertical compressive deformation magnitude of rock sample is acquired by two amesdials 46.Rock sample is applied by lever loading mechanism 40
Add stable vertical pressure, compared with traditional manual hydraulic jack loading method, weight linear meter thick stick on-load pressure will not be with rock
Sample deformation and there is the case where increasing or reducing, realize constant weight load.And compared with electrohydraulic servo-controlling system, load and
Test process control is very simple, and equipment manufacturing cost is cheap, and can carry out several groups parallel test simultaneously, substantially increases compacted
Become the efficiency of test, and obtains more accurate test result.
Referring to Fig. 3 and Fig. 4, the sample container system 20 is set to the lower section of U-shaped movable ram 42, except to rock sample
It is formed outside the hole cylinder shape bucket 27 of sidewise restraint, further includes the quadrangle box 21 with upper end opening, the quadrangle box 21
The air inlet 24 being connected with blower system 52, the note that interval setting is connected with water circulation system 51 on bottom wall are set on side wall
Water hole 22, drainage hole 23.The bottom of quadrangle box 21 is from bottom to top sequentially placed rectangular heating plate 25, rectangular permeable stone 26.Institute
It states hole cylinder shape bucket 27 to be located on rectangular permeable stone 26, is inside from bottom to top sequentially placed lower round permeable stone 30, rock
Sample, upper round permeable stone 29 and circular steel cushion block 31, setting hole cylinder shape adds on the annular outer wall of hole cylinder shape bucket 27
Hot plate 28.The heating device is made of rectangular heating plate 25 and hole cylinder shape heating plate 28.When test, arc groove cushion block 44
Be placed on circular steel cushion block 31, the load of lever loading mechanism 40 by U-shaped movable ram 42, solid cylindrical roller bearing 45,
Arc groove cushion block 44, circular steel cushion block 31 and upper round permeable stone 29 are applied to by sidewise restraint in hole cylinder shape bucket 27
On rock sample.
The water circulation system 51 is filled the water into quadrangle box 21 by water injection hole 22, by drainage hole 23 by water from side
It excludes, and is stored in water circulation system 51 in shape box body 21, used for wetting-drying test next time.
The blower system 52 can continue pumping normal temperature air and cold air, and cooperate in sample container system 20
Heating device (rectangular heating plate 25, hole cylinder shape heating plate 28) uses.In dry rock specimen, blower system is opened
52 pump normal temperature air into quadrangle box 21 by air inlet 24, while opening heating device, and adjust the temperature to test and set
Determine temperature, the air after heating is carried to be excluded from the vapor that rock sample evaporates from 21 top port of quadrangle box, dries rock
Stone sample realizes the drying and watering cycle effect of rock sample.
The method for realizing the cold cycling of rock sample is, after the water in quadrangle box 21 is drained, opens heating device
(rectangular heating plate 25, hole cylinder shape heating plate 28), adjusts the temperature to experimental design high temperature values, heat run design time,
It is then shut off heating device, while opening blower system 52 and cold air is persistently pumped into quadrangle box 21 by air inlet 24,
Cooling rock sample.
Referring to Fig.1, a kind of simple rock weathering of the utility model, creep integration experimental rig are tried as follows
It tests:
1. cylindric rock sample is placed in drying in oven at least 24 hours to constant weight, drying temperature is 50 DEG C；
2. rock sample is placed in sample container system 20, by the hole cylinder for being seated 21 central location of quadrangle box
27 pairs of rock samples of shape bucket provide sidewise restraint；
3. based on lever principle according to the vertical on-load pressure value of experimental design, by required 48 quantity carry of weights in
On sunpender 47, carry out stablizing constant weight vertically loading to rock sample；Two amesdials 46 are begun through from extension weights 48 to adopt
Collect the vertical compressive deformation magnitude of rock sample, it is primary every 10min record, until continuous 3 records numerical value is constant；
4. carrying out drying and watering cycle slacking to rock sample, opens water circulation system 51 and is filled the water into quadrangle box 21,
Until flooding the upper round permeable stone 29 at the top of rock sample, stopping water filling and impregnating rock sample 24 hours in water；It opens
It opens water circulation system 51 and drains water from quadrangle box 21；It opens blower system 52 and pumps room temperature sky into quadrangle box 21
Gas, while heating device is opened, and adjust the temperature to test set temperature, it dries rock sample 24 hours；
5. carrying out cold cycling slacking to rock sample, the water in quadrangle box 21 is drained, opens heating device,
Experimental design high temperature values are adjusted the temperature to, rock sample is heated 24 hours, is then shut off heating device, while opening air blast system
System 52 persistently pumps cold air into quadrangle box 21, cools down rock sample 24 hours；
6. carrying out the drying and watering cycle of setting number according to experimental design to rock sample and cold cycling acting on；
7. after completing setting slacking test, continuing for two amesdials 46 of record and reading, until stabilization, stops examination
It tests, removal weights 48, takes out rock sample.
The step 4. rock sample immersion and drying course neutralization procedure 5. in rock heat and cooling procedure, when beginning
Every 10min records primary two amesdials 46 reading, if continuous 3 difference of readings are less than 0.001mm, it is primary to be changed to 1h record.
1. the step to test 7., carries out the parallel test of 4 identical rock samples simultaneously every time, takes mean value conduct
Test result.
It should be pointed out that only explain through diagrams a kind of simple rock weathering of the utility model, creep one described above
The specific structure of body experimental rig, due to being to be easy on this basis for the those of ordinary skill to same technique field
Carry out several modifications and change.Therefore, this specification is not intended to for utility model to be confined to shown and described specific structure
In the scope of application, therefore all corresponding modifications that may be utilized and equivalent, it belongs to the utility model and is applied
The scope of the patents.
Claims (6)
1. a kind of simple rock weathering, creep integration experimental rig, it is characterized in that: it includes sample container system (20), thick stick
Bar loading mechanism (40), water circulation system (51) and blower system (52)；The sample container system (20), which has, tries rock
Sample forms the heating device that the hole cylinder shape of sidewise restraint bucket (27) and heated to rock sample, the water circulation system
(51) rock sample is humidified, the blower system (52) is dried and cools down to rock sample, keeps rock sample real
Existing drying and watering cycle and cold cycling；The lever loading mechanism (40) vertically acts on rock sample, it is carried out constant weight load,
Unloading.
2. a kind of simple rock weathering as described in claim 1, creep integration experimental rig, it is characterized in that: the lever
Loading mechanism (40) includes the crossbeam (41) that one end is articulated on portal frame (10) column (11), the other end of crossbeam (41) with
Hingedly, U-shaped movable ram is hingedly arranged by bearing (43) on crossbeam (41) in sunpender (47) for carry weights (48)
(42), U-shaped movable ram (42) vertically acts on rock by solid cylindrical roller bearing (45), the arc groove cushion block (44) under it
Sample.
3. a kind of simple rock weathering as claimed in claim 2, creep integration experimental rig, it is characterized in that: the bearing
(43) pin shaft for being horizontally through crossbeam (41) is installed on inner hole, one amesdial is respectively set in the both lateral sides of crossbeam (41)
(46), amesdial (46) is fixed on portal frame (10) by Magnetic gauge stand, and measuring head contact is on pin shaft.
4. a kind of simple rock weathering as claimed in claim 2, creep integration experimental rig, it is characterized in that: the gate-type
Frame (10), lever loading mechanism (40), sample container system (20) are horizontally arranged at interval, and each portal frame (10) passes through cross bar
Component connects to form whole frame.
5. a kind of simple rock weathering as claimed in claim 2, creep integration experimental rig, it is characterized in that: the sample
Containment system (20) is set to the lower section of U-shaped movable ram (42), and including the quadrangle box (21) with upper end opening, this is rectangular
The air inlet (24) being connected with blower system (52) is set on the side wall of box body (21), interval setting and water cyclic system on bottom wall
Water injection hole (22), the drainage hole (23) that system (51) is connected.
6. a kind of simple rock weathering as claimed in claim 5, creep integration experimental rig, it is characterized in that: described rectangular
The bottom of box body (21) is from bottom to top sequentially placed rectangular heating plate (25), rectangular permeable stone (26)；The hole cylinder shape bucket
(27) it is located on rectangular permeable stone (26), is inside from bottom to top sequentially placed lower round permeable stone (30), rock sample, upper circle
Hole cylinder shape heating plate is arranged on the annular outer wall of hole cylinder shape bucket (27) for shape permeable stone (29) and circular steel cushion block (31)
(28)；The heating device is made of rectangular heating plate (25) and hole cylinder shape heating plate (28).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709809A (en) * | 2018-01-12 | 2018-10-26 | 中铁二院工程集团有限责任公司 | A kind of simple rock weathering, creep integration experimental rig and test method |
| CN112834320A (en) * | 2020-11-03 | 2021-05-25 | 贵州大学 | Dry-wet cycle triaxial testing machine and use method thereof |
| CN113390733A (en) * | 2021-05-07 | 2021-09-14 | 河海大学 | Bridge column pile soaking section critical dynamic load damage experimental device and method |
| CN115597988A (en) * | 2022-12-14 | 2023-01-13 | 湖南大学（Cn） | Pendulum bob test system with constant vertical pressure loading function |
-
2018
- 2018-01-12 CN CN201820058705.2U patent/CN208313720U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709809A (en) * | 2018-01-12 | 2018-10-26 | 中铁二院工程集团有限责任公司 | A kind of simple rock weathering, creep integration experimental rig and test method |
| CN112834320A (en) * | 2020-11-03 | 2021-05-25 | 贵州大学 | Dry-wet cycle triaxial testing machine and use method thereof |
| CN112834320B (en) * | 2020-11-03 | 2022-11-29 | 贵州大学 | Dry-wet cycle triaxial testing machine and use method thereof |
| CN113390733A (en) * | 2021-05-07 | 2021-09-14 | 河海大学 | Bridge column pile soaking section critical dynamic load damage experimental device and method |
| CN113390733B (en) * | 2021-05-07 | 2022-07-29 | 河海大学 | Bridge column pile soaking section critical dynamic load damage experimental device and method |
| CN115597988A (en) * | 2022-12-14 | 2023-01-13 | 湖南大学（Cn） | Pendulum bob test system with constant vertical pressure loading function |
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