CN205670152U - A kind of control the instrument measuring expansive force under wet environment - Google Patents
A kind of control the instrument measuring expansive force under wet environment Download PDFInfo
- Publication number
- CN205670152U CN205670152U CN201620524862.9U CN201620524862U CN205670152U CN 205670152 U CN205670152 U CN 205670152U CN 201620524862 U CN201620524862 U CN 201620524862U CN 205670152 U CN205670152 U CN 205670152U
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- Prior art keywords
- screw rod
- cutting ring
- knob
- fixing device
- soil sample
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of instrument controlled and measure expansive force under wet environment, relate to Geotechnical Engineering test apparatus.This instrument includes soil sample (00)；It is provided with fixing device (10), measurement apparatus (20) and environmental device (30)；Soil sample (00) is placed in fixing device (10), and fixing device (10) is placed in environmental device (30), and fixing device (10) and measurement apparatus (20) connect.Compared with prior art, this utility model has the advantage that and beneficial effect: 1. ensure that soil sample constancy of volume in whole process of the test；2. pressure transducer has the advantage that precision is high, range is big, improves the precision of result of the test；3. soil sample expansive force under different humidity environment can be measured.
Description
Technical field
This utility model relates to Geotechnical Engineering test apparatus, particularly relates to a kind of instrument controlled and measure expansive force under wet environment
Device, it is adaptable to have expansile soil (swelled ground).
Background technology
Swelled ground has distribution, widely dispersed in several provinces and cities of China ten.Bentonite water-swellable softens, dehydration is received
Contracting dry and cracked, engineering properties is complicated and changeable and is difficult to hold, and often results in the Geotechnical Engineering disaster that bentonite location is numerous.So
And, the soil body of nature is the most all unsaturated state, and it is improper for only evaluating Practical Project with the expansive force of saturation.
Therefore, the most accurately measure soil body expansive force under unsaturated state to have very important significance.
Utility model content
The purpose of this utility model is the shortcoming and defect overcoming prior art to exist, it is provided that survey under a kind of control wet environment
The instrument of amount expansive force, i.e. the soil body measures its expansive force under different humidity environment, it is adaptable to all kinds of have dilative soil
Expansive force is tested.
The purpose of this utility model is achieved in that
The instrument that this utility model provides can be in the case of keeping the change of soil sample body negligible, at different humidity ring
Border carries out the measurement of expansive force；And utilize high-precision pressure sensor to improve the method that unsaturated soil expansive force is measured, for measuring
Expansive force provides a new approach, provides trust reliable foundation for solving geotechnical engineering problems.
Specifically, this instrument includes measurand soil sample；
It is provided with fixing device, measurement apparatus and environmental device；
Soil sample is placed in fixing device, and fixing device is placed in environmental device, and fixing device and measurement apparatus connect.
Compared with prior art, this utility model has the advantage that and beneficial effect:
1. ensure that soil sample constancy of volume in whole process of the test；
2. pressure transducer has the advantage that precision is high, range is big, improves the precision of result of the test；
3. soil sample expansive force under different humidity environment can be measured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of fixing device；
Fig. 3 is the structural representation of firm banking.
In figure:
00 soil sample.
10 fixing devices,
11 firm bankings,
111 air inlets, 112 ventholes, 113 installing holes, 114 storage rooms,
1151 small circular grooves, 1152 big circular grooves；
12 circular steel columns,
121 steel column screw rods, 122 table folders；
13 square beams with holes；
14 knobs,
141 screw rod retainer ring, 142 knob screw rods,
151 times permeable stones, 152 upper dankness stones；
Cylinder fixed by 16 cutting rings；
17 cutting rings；
M1 the 1st nut, M2 the 2nd nut, D1 the 1st pad, D2 the 2nd pad.
20 measurement apparatus,
21 pressure transducers；
22 digital display meters；
23 computers；
24 amesdials.
30 environmental devices,
31 vacuum desiccators, 311 glass covers, 312 glass jars, 313 medium pores；
32 porous porcelain plates；
33 saturated salt solutions.
Detailed description of the invention
Describe in detail with embodiment below in conjunction with the accompanying drawings:
One, the structure of this instrument
1, overall
Such as Fig. 1, this instrument includes measurand soil sample 00；
It is provided with fixing device 10, measurement apparatus 20 and environmental device 30；
Soil sample 00 is placed in fixing device 10, and fixing device 10 is placed in environmental device 30, fixing device 10 and measurement dress
Put 20 connections.
2, functional part
0) soil sample 00
Soil sample 00 is undisturbed, is compacted sample, hits full pattern or mud sample.
1) fixing device 10
Such as Fig. 1,2,3, fixing device 10 include firm banking 11, circular steel column 12, square beam with holes 13, knob 14,
Lower permeable stone 151, upper dankness stone 152, cutting ring fix cylinder 16, cutting ring 17, the 1st nut M1, the 2nd nut M2, the 1st pad D1 and
2 pad D2；
Its position and annexation be:
Firm banking 11 is connected by installing hole 113 with two circular steel columns 12, and square beam 13 with holes is placed on circular steel
On screw rod 121 above post 12, the 1st pad D1 and the 1st nut M1 is first placed on square beam 13 with holes, and is enclosed within screw rod
On 121；
Lower permeable stone 151 is placed in the small circular groove 1151 of base 11, and cutting ring is fixed cylinder 16 and is placed in big circular groove
In 1152 and on lower permeable stone 151, cutting ring 17 is placed in cutting ring and fixes in cylinder 16, and soil sample 00 is arranged in cutting ring 17, upper permeable
Stone 152 is placed in soil sample 00；
Knob screw rod 142 is perpendicularly interposed in the middle hole of square beam 13 with holes, and screw rod retainer ring 141 is enclosed within knob spiral shell
On bar 142, table folder 122 is placed on suitable height, respectively places the 2nd pad D2 and the 2nd nut M2.
Described firm banking 11 is a kind of metal nahlock, along its center axis, from top to bottom, is disposed with storage room
114, small circular groove 1151 and big circular groove 1152；The right and left at firm banking 11 is respectively perpendicular and is provided with installing hole
113；Before and after firm banking 11, both sides have been horizontally disposed with air inlet 111 and venthole 112 respectively；
Described circular steel column 12 is provided with screw rod 121 in the middle part of it, and top is provided with table folder 122；
Described square beam with holes 13 is a kind of steel square column, and its both sides are provided with installing hole, and installing hole is interior volution
And adaptive with screw rod 121, its interstitial hole is interior volution and adaptive with knob screw rod 142；
Described knob 14 is provided with knob screw rod 142 and screw rod retainer ring 141, and screw rod retainer ring 141 is a kind of metal
Annulus, its endoporus is volution and adaptive with knob screw rod 142；
Cylinder 16 fixed by described cutting ring is a kind of steel drum being used for fixing cutting ring, its external diameter and big circular groove 1152
Adaptation, internal diameter is adaptive with the external diameter of cutting ring 17, and height is more than or equal to cutting ring 17；
Described cutting ring 17 is the steel instrument that a kind of laboratory is general, and its internal diameter is 61.8mm, height be 20mm or
40mm；
Other functional parts above-mentioned are general part.
Its working mechanism is:
Firm banking 11 is positioned on horizontal bed, firm banking 11, circular steel column 12 and square beam with holes 13 structure
Becoming a spatial skeleton, after fixing up and down, firm banking 11 and square beam 13 with holes can provide a fixing water respectively
Plane, knob 14 can turn vertically, regulation needs fixing height, and screw rod retainer ring 141 is for fixed knob 14, overall
Constituting a fixing device that can regulate height, table folder 122 is used for fixing amesdial 24.
2) measurement apparatus 20
Such as Fig. 2, measurement apparatus 20 includes pressure transducer 21, digital display meter 22, computer 23 and amesdial 24；
Its position and annexation be:
Pressure transducer 21 is placed horizontally on upper dankness stone 152, the pressure cap on pressure transducer 21 top and knob
The bottom of screw rod 142 is in close contact, and is directed at its center；Pressure transducer 21, digital display meter 22 and computer 23 are sequentially connected with, and thousand
Divide table 24 to be vertically placed in the vertical hole of table folder 122, and occupy the center on knob 14 top；
Pressure transducer 21, digital display meter 22, computer 23 and amesdial 24 are general functional part.
Its working mechanism is:
On the one hand, pressure transducer 21 is in close contact with knob screw rod 142, lower with soil sample 00 above upper dankness stone
152 are in close contact, and once soil sample 00 absorbs water or moisture absorption, will expand, and soil sample 00 surrounding is restricted the most fixing
Constant, so can only extrude upper and lower permeable stone 152,151 because Expansion Potential release produces expansion, pressure reaches pressure sensing
Device 21, pressure transducer 21 is squeezed, and its actual pressure value reaches digital display meter 22 by data wire, and the dial plate of digital display meter 22 shows
Show that instant force value, the data of whole process all reach computer 23 by data wire, carry out adding up, analyze and drawing a diagram；
On the other hand, amesdial 24 is placed in the center of knob 14 end face, measures the vertical displacement of knob 14 with this, thus reaches
Purpose to detection constant volume method with dilatometer reliability.
3) environmental device 30
Such as Fig. 1, environmental device utility model includes vacuum desiccator 31, porous porcelain plate 32, saturated salt solution 33；
Vacuum desiccator 31 includes glass cover 311 and the glass jar 312 being vertically connected with, in the center of top of glass cover 311
It is provided with medium pore 313；
Its position and annexation be:
Being contained with saturated salt solution 33 in the bottom of vacuum desiccator 31, the lower horizontal at vacuum desiccator 31 is placed with
Porous porcelain plate 32, fixing device 10 horizontal center is placed on porous porcelain plate 32, and pressure transducer 21 is by medium pore 313 and number
Aobvious table 22 connects.
Its working mechanism is:
Vacuum desiccator 31 provides a confined space for whole test, places saturated salt solution 33 bottom it, different
Saturated salt solution can provide different humidity environments；On the one hand the effect of porous porcelain plate 32 has two, allows bottom saturated salt solution
The dampness of release is full of whole test space, on the other hand provides a levelling bench for fixing device 10.
Two, using method
1. each part of inspection apparatus stands intact, and ensures the cleannes of a whole set of instrument, is placed on flat by firm banking 11
On whole porous porcelain plate 32, two of band screw rod 121 circular steel columns 12 are vertically assigned into the installing hole 113 of firm banking 11
In；The screw rod 121 of the installing hole alignment steel column at square beam 13 two ends with holes vertically puts down, and level is laid；By the 1st pad D1 and
1st nut M1 is successively put in the screw rod 121 on square beam 13 with holes, tightens and makes crossbeam 13 fix and keep level, table folder 122
It is placed on suitable height, respectively places the 2nd pad D2 and the 2nd nut M2；
2. lower permeable stone 151 is placed horizontally in small circular groove 1151；Cutting ring is fixed cylinder 16 and is positioned over down permeable
The top of stone 151 is placed in big circular groove 1152；Cutting ring 17 is placed cutting ring and fixes in cylinder 16, by the placement side of cutting ring 17
To for the edge of a knife upwards, style 00 is the soil sample or undisturbed soil sample suppressed in cutting ring 17 in advance, respectively puts a filter paper；On
Permeable stone 152 is positioned over above soil sample 00, and makes its horizontal positioned；
3. pressure transducer 21 is placed horizontally on upper dankness stone 152, and it is permeable to make pressure transducer 21 be put in
The center of stone 152；Pressure transducer 21 accesses on digital display meter 22 by data wire, and digital display meter 22 accesses meter by data wire
Calculation machine 23 also reads data；
4. knob screw rod 142 is inserted perpendicularly into the middle hole of square beam 13 with holes, and turn knobs 14, is allowed to and presses
The pressure cap contact of the upper end of force transducer 21, and allow the center of knob screw rod 142 bottom be directed at pressure transducer 21 upper end
Pressure cap, it is to avoid deflection pressure；Opening digital display meter 22, now digital display meter 22 dial plate can show initial pressure value 0, turn knobs 14
Make knob screw rod 142 be in close contact further with the pressure cap of the upper end of pressure transducer 21, make digital display meter 22 dial plate show one
Fixed force value, such as 10N(i.e. 3.33kPa), record now reading, and digital display meter 22 is reset；Screw rod retainer ring 141 is enclosed within
On knob screw rod 142, and tighten and make screw rod retainer ring 141 be in close contact with square beam 13 with holes；Amesdial 24 is vertically placed
In the vertical hole of table folder 122, and occuping the center on knob 14 top, and give a starting force, pointer as big in amesdial 24 turns
Dynamic 5-10 scale division value, to ensure that amesdial 24 pointer contacts with knob 14, then makes zero amesdial 24, measures knob 14 and erects
The straight displacement risen, verifies the reliability of constant volume method and dilatometer with this；Pressure transducer 21 data wire passes glass cover 311
It is connected with digital display meter, and carries out the seal operation of glass cover；
5. saturated salt solution 33 can provide an ambient humidity stable, accurate in airtight vacuum desiccator 31,
And make the humidity in whole space reach balance, different saturated salt solutions can provide different ambient humidities, air inlet 111 with go out
The effect of pore 112 mainly allows storage room 114 and environment space UNICOM, to allow soil sample 00 top and bottom moisture absorption simultaneously, from
And reach time saving purpose；When in vacuum desiccator 31 or storage room 114 relative humidity is more than the relative humidity of soil sample, soil
Sample 00 meeting moisture absorption, thus produce expansion, pressure transducer 21 can be experienced transmit from the soil body 00 by the extruding of soil sample 00
Pressure, shown the expansive force currently shown by digital display meter 22, computer 23 record whole pressure process changing value
And draw corresponding chart.
Claims (4)
1. control the instrument measuring expansive force under wet environment, including soil sample (00)；It is characterized in that:
It is provided with fixing device (10), measurement apparatus (20) and environmental device (30)；
Soil sample (00) is placed in fixing device (10), in fixing device (10) is placed in environmental device (30), fixing device (10) and
Measurement apparatus (20) connects.
2. a kind of as described in claim 1 controls the instrument measuring expansive force under wet environment, it is characterised in that:
Described fixing device (10) includes firm banking (11), circular steel column (12), square beam with holes (13), knob
(14), lower permeable stone (151), upper dankness stone (152), cutting ring fix cylinder (16), cutting ring (17), the 1st nut (M1), the 2nd nut
(M2), the 1st pad (D1) and the 2nd pad (D2)；
Its position and annexation be:
Firm banking (11) is connected by installing hole (113) with two circular steel columns (12), and square beam with holes (13) is placed on circle
On the screw rod (121) of shape steel column (12) top, the 1st pad (D1) and the 1st nut (M1) are first placed on square beam with holes (13)
On, and be enclosed within screw rod (121)；
Lower permeable stone (151) is placed in the small circular groove (1151) of base (11), and cutting ring is fixed cylinder (16) and is placed in big circular recessed
In groove (1152) and on lower permeable stone (151), cutting ring (17) is placed in cutting ring and fixes in cylinder (16), and soil sample (00) is arranged on cutting ring
(17), in, upper dankness stone (152) is placed in soil sample (00)；
Knob screw rod (142) is perpendicularly interposed in the middle of square beam with holes (13) in hole, and screw rod retainer ring (141) is enclosed within knob
On screw rod (142), table folder (122) is placed on suitable height, respectively places the 2nd pad (D2) and the 2nd nut (M2)；
Described firm banking (11) is a kind of metal nahlock, along its center axis, from top to bottom, is disposed with storage room
(114), small circular groove (1151) and big circular groove (1152)；The right and left at firm banking (11) is respectively perpendicular setting
There is installing hole (113)；Before and after firm banking (11), both sides have been horizontally disposed with air inlet (111) and venthole (112) respectively；
Described circular steel column (12) is provided with screw rod (121) in the middle part of it, and top is provided with table folder (122)；
Described square beam with holes (13) is a kind of steel square column, and its both sides are provided with installing hole, installing hole be interior volution and
Adaptive with screw rod (121), its interstitial hole is interior volution and adaptive with knob screw rod (142)；
Described knob (14) is provided with knob screw rod (142) and screw rod retainer ring (141), and screw rod retainer ring (141) is a kind of
Metal ring, its endoporus is volution and adaptive with knob screw rod (142)；
Cylinder (16) fixed by described cutting ring is a kind of steel drum being used for fixing cutting ring, its external diameter and big circular groove (1152)
Adaptation, internal diameter is adaptive with the external diameter of cutting ring (17), and height is more than or equal to cutting ring (17)；
Described cutting ring (17) is the steel instrument that a kind of laboratory is general, and its internal diameter is 61.8mm, height be 20mm or
40mm。
3. a kind of as described in claim 1 controls the instrument measuring expansive force under wet environment, it is characterised in that:
Described measurement apparatus (20) includes pressure transducer (21), digital display meter (22), computer (23)
With amesdial (24)；
Its position and annexation be:
Pressure transducer (21) is placed horizontally on upper dankness stone (152), the pressure cap on pressure transducer (21) top and rotation
The bottom of button screw rod (142) is in close contact, and is directed at its center；Pressure transducer (21), digital display meter (22) and computer (23)
Being sequentially connected with, amesdial (24) is vertically placed in the vertical hole of table folder (122), and occupy the center on knob (14) top.
4. a kind of as described in claim 1 controls the instrument measuring expansive force under wet environment, it is characterised in that:
Described environmental device (30) includes vacuum desiccator (31), porous porcelain plate (32), saturated salt solution (33)；
Vacuum desiccator (31) includes glass cover (311) and the glass jar (312) being vertically connected with, at the top of glass cover (311)
Central authorities are provided with medium pore (313)；
Its position and annexation be:
Being contained with saturated salt solution (33) in the bottom of vacuum desiccator (31), the lower horizontal at vacuum desiccator (31) is placed
Porous porcelain plate (32), fixing device (10) horizontal center is had to be placed on porous porcelain plate (32), during pressure transducer (21) passes through
Central aperture (313) is connected with digital display meter (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620524862.9U CN205670152U (en) | 2016-06-01 | 2016-06-01 | A kind of control the instrument measuring expansive force under wet environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620524862.9U CN205670152U (en) | 2016-06-01 | 2016-06-01 | A kind of control the instrument measuring expansive force under wet environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205670152U true CN205670152U (en) | 2016-11-02 |
Family
ID=57193382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620524862.9U Expired - Fee Related CN205670152U (en) | 2016-06-01 | 2016-06-01 | A kind of control the instrument measuring expansive force under wet environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205670152U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866383A (en) * | 2016-06-01 | 2016-08-17 | 桂林理工大学 | Instrument for measuring expansibility under humid-control environment |
| CN106980008A (en) * | 2017-04-14 | 2017-07-25 | 桂林理工大学 | A kind of karst area soil layer is disintegrated device |
| CN108508188A (en) * | 2018-05-13 | 2018-09-07 | 桂林理工大学 | A kind of novel disturbance rejection shrinkage test device |
| CN109141720A (en) * | 2018-10-18 | 2019-01-04 | 大连理工大学 | A kind of device measuring clay swell power |
-
2016
- 2016-06-01 CN CN201620524862.9U patent/CN205670152U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866383A (en) * | 2016-06-01 | 2016-08-17 | 桂林理工大学 | Instrument for measuring expansibility under humid-control environment |
| CN106980008A (en) * | 2017-04-14 | 2017-07-25 | 桂林理工大学 | A kind of karst area soil layer is disintegrated device |
| CN108508188A (en) * | 2018-05-13 | 2018-09-07 | 桂林理工大学 | A kind of novel disturbance rejection shrinkage test device |
| CN109141720A (en) * | 2018-10-18 | 2019-01-04 | 大连理工大学 | A kind of device measuring clay swell power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161102 Termination date: 20200601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |