CN106680111A - Sample loading device for assisting direct shear tests and direct shear box matched with same - Google Patents
Sample loading device for assisting direct shear tests and direct shear box matched with same Download PDFInfo
- Publication number
- CN106680111A CN106680111A CN201611090846.4A CN201611090846A CN106680111A CN 106680111 A CN106680111 A CN 106680111A CN 201611090846 A CN201611090846 A CN 201611090846A CN 106680111 A CN106680111 A CN 106680111A
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- direct shear
- handrail
- shear box
- forth effort
- power transmission
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- 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
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a sample loading device for assisting direct shear tests and a direct shear box matched with the sample loading device. The sample loading device comprises a pressing mechanism and a supporting mechanism, wherein the pressing mechanism and the supporting mechanism are bilaterally symmetrical structures respectively; the pressing mechanism comprises an upper handrail, a connecting rod, a limiting piece and a pressure head, the upper end of the connecting rod is connected with the upper handrail, the lower end of the connecting rod is connected with the pressure head, and the limiting piece is fixed at the upper part of the connecting rod; the supporting mechanism comprises a lower handrail and two force transferring connecting pieces, the two force transferring connecting pieces are symmetrically installed on the lower handrail, a penetrating hole is formed in the center of the lower handrail, the connecting rod passes through the penetrating hole, and the limiting piece is positioned above the lower handrail. The direct shear box comprises an upper direct shear box, a lower direct shear box and two acting components, and the two acting components are symmetrically fixed on two opposite side walls of the lower direct shear box. Both of the device and the direct shear box are simple in structures, and are cooperatively used and conveniently operated, cutting ring samples can be uniformly pushed into the direct shear box under the condition that the cutting ring samples are relatively dense, and the disturbance to the cutting ring samples is little.
Description
Technical field
The present invention relates to laboratory soil test engineering device technique field, and in particular to a kind of direct shear test auxiliary dress sampling device and
The direct shear box supporting with it.
Background technology
Direct shear test is a kind of important soil test, to the shearing strength and its parameter (adhesive aggregation of testing experiment soil sample
Power C, internalfrictionangleφ).Test soil sample is generally sand of the maximum particle diameter less than 5mm, silt or clay, when test soil sample is
During sand, test is started by directly soil sample to be measured is fitted in direct shear box, and the fine grained soil such as silt, clay generally requires to treat
Survey soil sample and be first fabricated to the cutting ring sample with certain humidity, density, then again the soil sample in cutting ring is pushed in direct shear box is carried out
Test, but (typically in 1.5g/cm after cutting ring sample reaches certain degree of compaction3More than), it is difficult during test operation
Cutting ring sample is pressed in direct shear box, the indoor conventional method of experiment at present is gently to tap soil sample using mallet, is striking soil sample
Hit in the presence of vibration and fall in direct shear box, but disturbance of this method to soil sample is very big, it is structural stronger to some
Fine grained soil using the obvious distortion of result that this kind of operational approach is measured, therefore we be badly in need of one kind can be closeer in cutting ring sample
Auxiliary dress sampling device and the matching used direct shear box in direct shear box is pushed it in the case of reality.
The content of the invention
In order to solve the problems, such as above-mentioned prior art, the invention provides a kind of direct shear test auxiliary dress sampling device and
The direct shear box supporting with it, the device and the equal simple structure of direct shear box, both, can be in cutting ring sample ratio with the use of easy to operate
It is uniformly pushed in direct shear box in the case of more closely knit, and it is little to the disturbance of cutting ring sample.
Realize technical scheme that above-mentioned purpose of the present invention adopted for：
A kind of direct shear test aids in dress sampling device, and the device is bilateral symmetry, and the device includes press mechanism and props up
Support mechanism, press mechanism and supporting mechanism are symmetrical mechanism, press mechanism include upper handrail, connecting rod, locating part and
Pressure head, the upper end of connecting rod is connected with upper handrail central authorities, and lower end is connected with the central authorities of pressure head, and locating part is fixed on the upper of connecting rod
Portion, the shape of pressure head, the shape of size and cutting ring, size match, and supporting mechanism includes lower handrail and power transmission connection part, power transmission
Connector has two, and two power transmission connection parts are symmetrically arranged on lower handrail, and lower handrail central authorities are provided with perforation, and connecting rod is through perforation
And upper handrail can be slided up and down with connecting rod, locating part is located at lower handrail top.
Described power transmission connection part is L-shaped or reverse L type, and power transmission connection part is by vertical power transmission support member and transverse connection structure
Into the upper end of vertical power transmission support member is connected with lower handrail, and lower end is connected with transverse connection.
Described vertical power transmission support member and transverse connection is square tabular.
Described upper handrail and lower handrail is in bar shaped tabular, and upper handrail is parallel to lower handrail, upper handrail and lower handrail
It is shape, equivalently-sized.
Described locating part and pressure head is in the form of annular discs.
Described connecting rod is round bar, and described perforation is circular hole, and connecting rod coordinates with lower handrail gap.
A kind of direct shear box for aiding in direct shear test dress sampling device supporting, including upper direct shear box, lower direct shear box and pass with two
Power connector it is supporting two put forth effort part, upper direct shear box is installed on lower direct shear box, and two put forth effort part is symmetrically fixed on lower staight scissors
On the relative two side of box.
Described part of putting forth effort is L-shaped, puts forth effort part including vertical fixture and laterally puts forth effort part, and vertical fixture is fixed
On lower direct shear box, the one end for laterally putting forth effort part is fixed on vertical fixture, and the other end is hanging.
Described vertical fixture and laterally put forth effort part and be square tabular.
Putting forth effort part also includes limiting two spacing fixture blocks of transverse connection double swerve, and two spacing fixture blocks are fixed on lower straight
Cut on box, two spacing fixture blocks are symmetrically distributed in two both sides for putting forth effort part, and two spacing fixture blocks put forth effort respectively the two of part with two
Side wall connection.
Compared with prior art, its advantage and advantage are the present invention：
1) the auxiliary dress sampling device and the direct shear box are used cooperatively, it is simple to operate, can be in cutting ring sample denser
In the case of it is uniformly pushed in direct shear box, and by arranging the distance of lower handrail top surface and locating part bottom surface, it is ensured that
Push the soil sample in direct shear box and highly maintain 20mm, it is to avoid overexert during dress sample and cause soil sample to be extruded closely knit (soil sample height
Degree is less than 20mm), or firmly inadequate soil sample is not driven into the position specified (soil sample is highly more than 20mm).
2) auxiliary fills sampling device and puts forth effort modular construction simply, and material used is steel, low manufacture cost.
Description of the drawings
Fig. 1 is the structure chart after the direct shear test auxiliary dress sampling device and the staight scissors capsule supporting with it of the present invention.
Fig. 2 is the structural representation that direct shear test aids in dress sampling device.
Fig. 3 is the structural representation of direct shear box.
Wherein, handrail under the upper handrails of 1-, 2- connecting rods, 3- locating parts, 4- pressure heads, 5- power transmission connection parts, 6-, 7- perforation,
Direct shear box, 12- put forth effort part, 13- and laterally put forth effort under the vertical power transmission support members of 8-, 9- transverse connections, the upper direct shear boxes of 10-, 11-
The spacing fixture block of part, 14-.
Specific embodiment
The present invention is specifically described below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, the device is symmetrical knot to the structure of the direct shear test auxiliary dress sampling device of the present invention
Structure, the device includes press mechanism and supporting mechanism, and press mechanism and supporting mechanism are symmetrical mechanism.
Press mechanism includes upper handrail 1, connecting rod 2, locating part 3 and pressure head 4, and upper handrail 1 is in bar shaped tabular, locating part 3
In the form of annular discs with pressure head 4, the diameter of pressure head 4 is identical with the internal diameter of cutting ring.Connecting rod 2 be round bar, the upper end of connecting rod 2 with it is upper
The central authorities of handrail 1 connection, lower end is connected with the central authorities of pressure head 4.Locating part 3 is fixed on the top of connecting rod 2.In the present embodiment, on
The length of handrail is 240mm, and width is 20mm, and thickness is 5mm；A diameter of 10mm of connecting rod, length is 60mm；Locating part
A diameter of 20mm, thickness is 5mm；A diameter of 61.8mm of pressure head, thickness is 5mm.
Supporting mechanism includes lower handrail 6 and power transmission connection part 5.Lower handrail 6 is in bar shaped tabular, and upper handrail 1 is helped parallel under
It is the shape of handss 6, upper handrail 1 and lower handrail 6, equivalently-sized.The lower central authorities of handrail 6 are provided with the perforation 7 of circle, and the diameter of perforation 7 is big
In the diameter of connecting rod 2.Through perforation 7, locating part 3 is located at the top of lower handrail 6 to connecting rod 2, during dress sample, locating part bottom
Face to the distance between lower handrail top surface equal to soil sample movement distance.Power transmission connection part 5 has two, and power transmission connection part 5 is L-shaped
Or reverse L type, power transmission connection part 5 is made up of vertical power transmission support member 8 and transverse connection 9, and vertical power transmission support member 8 is bar shaped
Square plate, the square plate that transverse connection 9 is closer to for length and width.The upper end of two vertical power transmission support members 8 is symmetrically fixed
On the both sides of the bottom surface of lower handrail 6, and two vertical power transmission support members 8 are each perpendicular to lower handrail 6, two vertical power transmission support members 8
Lower end is connected respectively with two transverse connections 9.When sample is filled, because upper direct shear box top will place cutting ring sample, permeable stone and pressure
Head, therefore the length of vertical power transmission support member should make the bottom surface of lower handrail on the basis of above-mentioned several component thickness are considered
Certain reinforcement is left between pressure head top surface.In the present embodiment, the length of lower handrail is 240mm, and width is 20mm, and thickness is
5mm, when dress sample starts, the distance between the bottom surface of lower handrail and lower handrail top surface are 55mm；A diameter of 12mm of perforation；It is perpendicular
To power transmission support member length be 80mm, width is 20mm, and thickness is 5mm, on vertical power transmission support member and lower handrail with its away from
The vertical dimension of the one end close to is 50mm；The length of transverse connection is 20mm, and width is 13mm, and thickness is 5mm.
The present invention direct shear box structure as shown in figures 1 and 3, including upper direct shear box 10, lower direct shear box 11 and with two pass
Power connector it is supporting two put forth effort part 12.Put forth effort part 12 L-shaped, putting forth effort part 12 includes vertical fixture, laterally puts forth effort
The spacing fixture block 14 of part 13 and two, vertical fixture and laterally puts forth effort part 13 and is square plate, and spacing fixture block 14 is square, and two is spacing
Fixture block 14 is symmetrically fixed on the both sides of vertical fixture, and two spacing fixture blocks 14 are secured by bolts on lower direct shear box 11, and horizontal
It is fixed on vertical fixture top to the one end for putting forth effort part 13, the other end for laterally putting forth effort part 13 is hanging.Vertical fixture, horizontal stroke
Be integral type structure to the spacing fixture block 14 of part 13 and two is puted forth effort, the top of spacing fixture block with laterally put forth effort to be flushed at the top of part, and
The top for laterally putting forth effort part flushes with the top of lower direct shear box, and the height of spacing fixture block should be greater than laterally putting forth effort the thickness of part, and
The width of spacing fixture block should be greater than the thickness of vertical fixture, so spacing fixture block can play will put forth effort part be fixed on it is lower straight
Cut the effect on box, and power transmission connection part transverse connection with put forth effort when laterally putting forth effort part and using cooperatively of part, will
Transverse connection is blocked, and can be played a part of restriction transverse connection and be moved left and right.In the present embodiment, laterally put forth effort the length of part
For 20mm, width is 10mm, and thickness is 5mm；The length of vertical fixture is 10mm, and width is 5mm, and thickness is 2mm；Position limiting clamp
The length of block is 10mm, and width is 5mm, is highly 10mm.
The direct shear test auxiliary dress sampling device of the present invention and the using method of the direct shear box supporting with it are as follows：
1) first permeable stone, filter paper (or cellophane) are sequentially placed in lower direct shear box, are fixed upper and lower direct shear box with pin
Together, then in the center of upper direct shear box cutting ring sample, filter paper (or cellophane), permeable stone (diameter are sequentially placed
61.8mm, thickness 10mm)；
2) by the transverse connection of two power transmission connection parts be respectively placed in two put forth effort part laterally put forth effort part lower section, make two biographies
The transverse connection of power connector can catch on respectively when being lifted up two put forth effort part laterally put forth effort part, while making pressure head bottom
Portion contacts the top of permeable stone, and both hands hold handrail and lower handrail, while being pulled upwardly lower handrail handrail is pressed downward, on
Handrail is moved down under the counteracting force for putting forth effort part offer with connecting rod slide downward, until the bottom surface contact of locating part
Lower handrail top surface, now the soil sample in cutting ring be pressed completely into the assigned position in direct shear box, it should be noted that pushing
During to avoid inclining sedimentation caused by soil sample unbalance stress, both hands need balanced firmly to push.
Claims (10)
1. a kind of direct shear test auxiliary fills sampling device, it is characterised in that：The device is bilateral symmetry, and the device includes pushing
Mechanism and supporting mechanism, press mechanism and supporting mechanism are symmetrical mechanism, press mechanism include upper handrail, connecting rod,
Locating part and pressure head, the upper end of connecting rod is connected with upper handrail central authorities, and lower end is connected with the central authorities of pressure head, and locating part is fixed on company
The top of extension bar, the shape of pressure head, the shape of size and cutting ring, size match, and supporting mechanism includes that lower handrail and power transmission connect
Fitting, power transmission connection part has two, and two power transmission connection parts are symmetrically arranged on lower handrail, and lower handrail central authorities are provided with perforation, connection
Bar is through perforation and upper handrail can be slided up and down with connecting rod, and locating part is located at lower handrail top.
2. direct shear test auxiliary according to claim 1 fills sampling device, it is characterised in that：Described power transmission connection part is in L
Type or reverse L type, power transmission connection part is made up of vertical power transmission support member and transverse connection, and the upper end of vertical power transmission support member is with
Handrail connects, and lower end is connected with transverse connection.
3. direct shear test auxiliary according to claim 2 fills sampling device, it is characterised in that：Described vertical power transmission support member
It is square tabular with transverse connection.
4. according to the arbitrary described direct shear test auxiliary dress sampling device of claim 1-3, it is characterised in that：Described upper handrail and
Lower handrail is in bar shaped tabular, shape, equivalently-sized of the upper handrail parallel to lower handrail, upper handrail and lower handrail.
5. direct shear test auxiliary according to claim 4 fills sampling device, it is characterised in that：Described locating part and pressure head is equal
It is in the form of annular discs.
6. direct shear test auxiliary according to claim 5 fills sampling device, it is characterised in that：Described connecting rod is round bar,
Described perforation is circular hole, and connecting rod coordinates with lower handrail gap.
7. a kind of supporting direct shear box of described direct shear test auxiliary dress sampling device arbitrary with claim 1-6, including upper staight scissors
Box and lower direct shear box, upper direct shear box is installed on lower direct shear box, it is characterised in that：Also include two supporting with two power transmission connection parts
Put forth effort part, two put forth effort part is symmetrically fixed on the relative two side of lower direct shear box.
It is 8. according to claim 7 to aid in the supporting direct shear box of dress sampling device with direct shear test, it is characterised in that：Described
Put forth effort part L-shaped, put forth effort part including vertical fixture and laterally put forth effort part, vertical fixture is fixed on lower direct shear box,
The one end for laterally putting forth effort part is fixed on vertical fixture, and the other end is hanging.
It is 9. according to claim 8 to aid in the supporting direct shear box of dress sampling device with direct shear test, it is characterised in that：Described
Vertical fixture and laterally put forth effort part and be square tabular.
It is 10. according to claim 9 to aid in the supporting direct shear box of dress sampling device with direct shear test, it is characterised in that：Put forth effort
Part also includes limiting two spacing fixture blocks of transverse connection double swerve, and two spacing fixture blocks are fixed on lower direct shear box, two limits
Position fixture block is symmetrically distributed in two both sides for putting forth effort part, and two spacing fixture blocks are puted forth effort respectively the two side of part with two and are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611090846.4A CN106680111A (en) | 2016-11-30 | 2016-11-30 | Sample loading device for assisting direct shear tests and direct shear box matched with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611090846.4A CN106680111A (en) | 2016-11-30 | 2016-11-30 | Sample loading device for assisting direct shear tests and direct shear box matched with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106680111A true CN106680111A (en) | 2017-05-17 |
Family
ID=58865966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611090846.4A Pending CN106680111A (en) | 2016-11-30 | 2016-11-30 | Sample loading device for assisting direct shear tests and direct shear box matched with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106680111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174350A (en) * | 2019-06-12 | 2019-08-27 | 湖北省路桥集团有限公司 | A kind of test device and test method of clay true cohesion |
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| CN206362644U (en) * | 2016-11-30 | 2017-07-28 | 中国科学院武汉岩土力学研究所 | A kind of direct shear test auxiliary dress sampling device and the direct shear box supporting with it |
-
2016
- 2016-11-30 CN CN201611090846.4A patent/CN106680111A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| US5343771A (en) * | 1992-07-20 | 1994-09-06 | En Chem, Inc. | Tool for sampling soil containing volatile organic compound |
| CN1766539A (en) * | 2005-11-17 | 2006-05-03 | 南京大学 | Quantitative and quick ecological soil sampler |
| CN102914458A (en) * | 2012-10-16 | 2013-02-06 | 绍兴文理学院 | Sample preparing device for remolded soil direct shear test sample and sample preparing method thereof |
| CN104390808A (en) * | 2014-12-05 | 2015-03-04 | 山东科技大学 | Screw type soil sample pushing device and method |
| CN204373942U (en) * | 2015-01-19 | 2015-06-03 | 福建农林大学 | A kind of piston clamshell undisturbed soil soil sampling apparatus |
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Non-Patent Citations (2)
| Title |
|---|
| 周晖 等: "地基与基础", 中国轻工业出版社, pages: 105 - 106 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174350A (en) * | 2019-06-12 | 2019-08-27 | 湖北省路桥集团有限公司 | A kind of test device and test method of clay true cohesion |
| CN110174350B (en) * | 2019-06-12 | 2021-11-26 | 湖北省路桥集团有限公司 | Testing device and testing method for clay true cohesive force |
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