CN111751190A - Soil cutting device suitable for triaxial test cylinder soft soil sample - Google Patents
Soil cutting device suitable for triaxial test cylinder soft soil sample Download PDFInfo
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- CN111751190A CN111751190A CN202010744749.2A CN202010744749A CN111751190A CN 111751190 A CN111751190 A CN 111751190A CN 202010744749 A CN202010744749 A CN 202010744749A CN 111751190 A CN111751190 A CN 111751190A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
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Abstract
The embodiment of the application discloses cut native device suitable for triaxial test cylinder weak soil sample includes: a base and a soil cutting assembly; a soil disk is arranged in the center of the base; a plurality of support rods are arranged on the outer side of the soil disk along the circumferential direction; the plurality of supporting rods are vertically fixed on the base; the soil cutting assembly is sleeved on the plurality of supporting rods and is in sliding connection with the plurality of supporting rods; the soil cutting assembly comprises a ring body, a connecting blade and a soil cutting ring cutter which are horizontally arranged from outside to inside in sequence; the soil cutting ring cutter is concentrically arranged with the annular body and is fixedly connected with the annular body through a connecting blade; the circular ring body is correspondingly provided with a through hole matched with the shape of the supporting rod; the ring body is connected with the supporting rod in a sliding way through the through hole. The invention has the advantages of simpler and more convenient sample preparation, effectively reducing the disturbance to the undisturbed soil sample, ensuring the accuracy of the sample and further improving the preparation speed and the success rate of the sample.
Description
Technical Field
The application relates to the technical field of geotechnical tests, in particular to a soil cutting device suitable for a triaxial test cylinder soft soil sample.
Background
In the field of geotechnical engineering, the triaxial test is one of the most important tests in soil mechanics, and is used for measuring some important parameters and testing some properties of soil. When a triaxial test is carried out, firstly, a soil sample needs to be prepared into a cylinder with a certain diameter and a certain height. At present, the diameter of a sample commonly used in China is 39.1mm, 61.8mm and 100.1mm, and the height of the sample is 2-2.5 times of the diameter of the sample.
At present, two cylindrical sample soil cutters are needed for the test. The first one is nail disk soil cutter for soft soil sample, and its specific operation mode is: firstly, a soil column slightly larger than a specified size is cut by a wire saw or a soil cutting knife, the soil column is placed between an upper disc and a lower disc of a soil cutting disc, the upper disc and the lower disc are tightly pressed and fixed by a nail disc, a middle shaft is rotated, and then soil cutting blades are used for gradually cutting along the plate direction until the diameter of the soil sample is cut into a specified diameter, so that a cylindrical soil sample with the required diameter can be obtained. The method has the defects that an upper nail plate and a lower nail plate are required to be inserted into a soil sample for a certain depth, the upper soil body and the lower soil body are required to be removed after cutting is finished, the waste of the soil sample is caused, higher undisturbed soil is required to be taken when the soil sample is taken, the undisturbed soil sample is disturbed when the soil sample is compressed up and down for cutting, the test result is influenced, meanwhile, the disc is rotated while cutting for sample preparation, the obtained sample is inaccurate in size, the precision requirement required by the sample cannot be met, the sample preparation failure and the waste of the soil sample are caused, and the labor cost and the time cost are increased. The second type is a cutting ring type soil cutter, which comprises the following soil cutting steps: and (3) putting the cutting edge of the cutting ring downwards on the soil sample, pressing the cutting ring downwards vertically, cutting the soil sample along the outer side of the cutting ring by using a soil cutter, pressing the edge until the soil sample is higher than the cutting ring, leveling the soil samples at two ends of the cutting ring by using a wire saw or the soil cutter according to the hardness degree of the sample, and wiping the outer wall of the cutting ring. The method is a standard method for geotechnical tests for many years, but the speed is relatively slow, in the processes of pressing a cutter and cutting a soil sample, the requirements on the service level and the proficiency of operators are high, and the soil sample is easily disturbed due to careless operation, so that the processing quality of the soil sample is influenced; the contact area between the inner wall of the soil cutter and the soil sample is large, so that the friction force between the inner wall of the soil cutter and the soil sample is large, the cutting of the cutting ring is difficult, the soil body on the lower part can be damaged to a certain degree, and the sample is easy to extrude when finally pushed out, so that the test result is influenced.
Disclosure of Invention
The embodiment of the application provides a cut native device suitable for triaxial test cylinder weak soil sample for the system appearance is more simple and convenient, can effectively reduce the disturbance to the original state soil sample, guarantees the accuracy of sample, and then improves the preparation speed and the success rate of sample.
In view of this, this application provides a cut native device suitable for triaxial test cylinder soft soil sample includes: a base and a soil cutting assembly;
a soil disk is arranged in the center of the base;
a plurality of support rods are arranged on the outer side of the soil disc along the circumferential direction;
the supporting rods are vertically fixed on the base;
the soil cutting assembly is sleeved on the plurality of supporting rods and is in sliding connection with the plurality of supporting rods;
the soil cutting assembly comprises a ring body, a connecting blade and a soil cutting ring cutter which are horizontally arranged from outside to inside in sequence;
the soil cutting ring cutter is concentrically arranged with the annular body and is fixedly connected with the annular body through the connecting blade;
the circular ring body is correspondingly provided with a through hole matched with the supporting rod in shape;
the annular ring body is connected with the supporting rod in a sliding mode through the through hole.
Optionally, the outer side wall of the soil cutting ring cutter is of a cambered surface structure with a gradually narrowed edge from top to bottom;
the outer diameter of the upper surface of the soil cutting ring cutter is larger than the inner diameter of the upper surface of the soil cutting ring cutter;
the inner diameter of the upper surface of the soil cutting ring cutter is equal to the inner diameter of the lower surface of the soil cutting ring cutter.
Optionally, the connecting blade is multiple;
the plurality of connecting blades are uniformly distributed on the outer side of the soil cutting ring cutter along the circumferential direction.
Optionally, the connecting blade is a triangular prism blade.
Optionally, the triangular prism blade has a longitudinal section in the shape of an isosceles triangle.
Optionally, the method further comprises: the semicircular body is used for fixing the soil cutting assembly on the supporting rod;
the hemicycle body with the bracing piece can be dismantled and be connected.
Optionally, the half-ring body is a plastic half-ring body.
Optionally, an armrest is fixed on the outer side of the circular ring body.
Optionally, the torus is located right above the soil disk, and the inner diameter of the torus is equal to the diameter of the soil disk.
Optionally, the annular body, the connecting blade and the soil cutting ring are located in the same horizontal plane, and the heights of the annular body, the connecting blade and the soil cutting ring are equal.
According to the technical scheme, the embodiment of the application has the following advantages: the soil cutting device comprises a base and a soil cutting assembly, wherein a soil disc is arranged in the center of the base, a plurality of supporting rods are arranged on the outer side of the soil disc along the circumferential direction, the supporting rods are vertically fixed on the base, and the soil cutting assembly is sleeved on the supporting rods and is in sliding connection with the supporting rods; the soil cutting assembly comprises a ring body, a connecting blade and a soil cutting ring cutter which are sequentially and horizontally arranged from outside to inside, the soil cutting ring cutter and the ring body are concentrically arranged, the soil cutting ring cutter is fixedly connected with the ring body through the connecting blade, a through hole matched with the shape of the supporting rod is correspondingly formed in the ring body, and the ring body is connected with the supporting rod in a sliding mode through the through hole. This cut native device is when cutting the sample of taking soil, puts blank standard soil sample on the soil dish, cuts the sample of soil through cutting native cutting ring sword and slowly sliding downwards along the bracing piece, can effectively reduce the disturbance to the original state soil sample, makes the soil sample cross section size that obtains more accurate, and wherein the bracing piece of perpendicular to base can guarantee that the longitudinal section of soil sample keeps leveling. Compared with a nail-disk soil cutter, the upper part and the lower part of the device do not need to cut too many soil samples after the device is manufactured, the same amount of undisturbed soil can obtain more samples, the sample manufacturing power is higher, and the operation is simpler and more convenient; compared with a cutting ring type soil cutting device, the device has the advantages that the speed of obtaining the sample is high, great requirements are not required for operators, the contact part between the soil cutting device and the soil sample is small, the friction between the soil cutting device and the soil sample is small, the sample preparation is easy, the test efficiency is effectively improved, the step of finally extruding and taking soil by a cutting ring method is omitted, and the accuracy of the sample is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a soil cutting device suitable for a triaxial test cylinder soft soil sample in the embodiment of the present application;
wherein the reference numerals are:
1-supporting rod, 2-connecting blade, 3-hemicycle body, 4-base, 5-handrail, 6-soil cutting ring, 7-circulus body and 8-soil disk.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The application provides an embodiment of a soil cutting device suitable for triaxial test cylinder soft soil sample, please refer to fig. 1 specifically.
Soil cutting device suitable for triaxial test cylinder soft soil sample in this embodiment includes: the soil cutting device comprises a base 4 and a soil cutting assembly, wherein a soil disk 8 is arranged in the center of the base 4, a plurality of support rods 1 are arranged on the outer side of the soil disk 8 along the circumferential direction, the plurality of support rods 1 are vertically fixed on the base 4, and the soil cutting assembly is sleeved on the plurality of support rods 1 and is in sliding connection with the plurality of support rods 1; the soil cutting assembly comprises a ring body 7, a connecting blade 2 and a soil cutting ring cutter 6 which are sequentially and horizontally arranged from outside to inside, the soil cutting ring cutter 6 and the ring body 7 are concentrically arranged, the soil cutting ring cutter 6 is fixedly connected with the ring body 7 through the connecting blade 2, a through hole matched with the shape of the supporting rod 1 is correspondingly formed in the ring body 7, and the ring body 7 is connected with the supporting rod 1 in a sliding mode through the through hole.
It should be noted that: this cut native device is when cutting the sample of taking soil, puts blank standard soil sample on soil dish 8, cuts the sample of soil through cutting native cutting ring 6 along bracing piece 1 slowly slides downwards, can effectively reduce the disturbance to the original state soil sample, makes the soil sample cross section size that obtains more accurate, and wherein the longitudinal section that the bracing piece 1 of perpendicular to base 4 can guarantee the soil sample keeps leveling. Compared with a nail-disk soil cutter, the upper part and the lower part of the device do not need to cut too many soil samples after the device is manufactured, the same amount of undisturbed soil can obtain more samples, the sample manufacturing power is higher, and the operation is simpler and more convenient; compared with a cutting ring type soil cutting device, the device has the advantages that the speed of obtaining the sample is high, great requirements are not required for operators, the contact part between the soil cutting device and the soil sample is small, the friction between the soil cutting device and the soil sample is small, the sample preparation is easy, the test efficiency is effectively improved, the step of finally extruding and taking soil by a cutting ring method is omitted, and the accuracy of the sample is guaranteed.
The above embodiment of the soil cutting device suitable for a triaxial test cylinder soft soil sample provided in the embodiment of the present application is a first embodiment, and the following embodiment of the soil cutting device suitable for a triaxial test cylinder soft soil sample provided in the embodiment of the present application is a second embodiment, specifically please refer to fig. 1.
Soil cutting device suitable for triaxial test cylinder soft soil sample in this embodiment includes: the soil cutting device comprises a base 4 and a soil cutting assembly, wherein a soil disk 8 is arranged in the center of the base 4, a plurality of support rods 1 are arranged on the outer side of the soil disk 8 along the circumferential direction, the plurality of support rods 1 are vertically fixed on the base 4, and the soil cutting assembly is sleeved on the plurality of support rods 1 and is in sliding connection with the plurality of support rods 1; the soil cutting component comprises a ring body 7 which is horizontally arranged from outside to inside in sequence, a connecting blade 2 and a soil cutting ring 6, the soil cutting ring 6 and the ring body 7 are concentrically arranged, the soil cutting ring 6 is fixedly connected with the ring body 7 through the connecting blade 2, a through hole matched with the shape of the support rod 1 is correspondingly formed in the ring body 7, the ring body 7 is connected with the support rod 1 in a sliding mode through the through hole, the cross section of the support rod 1 can be circular, square or other shapes, limitation is not made at the cross section, and accordingly the shape of the through hole is correspondingly arranged with the cross section of the support rod 1.
In this embodiment, the number of the support rods 1 is 4, and 4 support rods 1 are uniformly distributed around the soil disk 8 along the circumferential direction.
Specifically, the outer side wall of the soil cutting ring cutter 6 is of a cambered surface structure with gradually narrowed edges from top to bottom, the outer diameter of the upper surface of the soil cutting ring cutter 6 is larger than the inner diameter of the upper surface of the soil cutting ring cutter 6, the inner diameter of the upper surface of the soil cutting ring cutter 6 is equal to the inner diameter of the lower surface of the soil cutting ring cutter 6, and the inner diameter of the lower surface of the soil cutting ring cutter 6 is the diameter of the required sample.
The connecting blades 2 can be a plurality of connecting blades, and the connecting blades 2 are uniformly distributed on the outer side of the soil cutting ring cutter 6 along the circumferential direction. It can be understood that the diameter of the soil cutting ring cutter 6 can be made to be corresponding according to the size of a required sample, so that the horizontal length of the connecting blade 2 is changed according to the radius of the soil cutting ring cutter 6.
In this embodiment, the number of the connecting blades 2 is 4, the length of the connecting blades is equal to the radius of the soil disk 8 minus the radius of the soil cutting ring 6, and the width of the connecting blades is 4 mm.
Specifically, the connecting blade 2 may be a triangular prism blade; the longitudinal section of the triangular prism blade can be an isosceles triangle; the material of the soil cutting ring cutter 6 and the connecting blade 2 can be iron, steel or other alloy materials, and is not limited herein.
Further comprising: the semicircular body 3 is used for fixing the soil cutting assembly on the supporting rod 1, the semicircular body 3 is detachably connected with the supporting rod 1, and the soil cutting assembly is used for supporting the soil cutting assembly above and staying in the air when not in use. Specifically, through with the direct lock of hemicycle body 3 on bracing piece 1, then will cut native subassembly cover and establish on bracing piece 1, the hemicycle body 3 that is located to cut native subassembly below can play the effect of support, and then will cut native subassembly and fix on bracing piece 1.
The semi-ring body 3 can be a plastic semi-ring body 3, in this embodiment, the thickness of the plastic semi-ring body 3 is 2mm, the height is 25mm, and the radius of the inner wall thereof is equal to the radius of the support rod 1.
The handrail 5 is fixed with in the tourus 7 outside, cuts soil through driving the subassembly of cutting soil with the help of handrail 5 and along the bracing piece 1 downstream, and it is more convenient to use.
Specifically, the torus 7 is located right above the soil disk 8, and the inner diameter of the torus 7 is equal to the diameter of the soil disk 8. The external diameter of torus 7 is less than the diameter of base 4, and the effect of torus 7 is in order to increase the horizontal stability and the global rigidity of top soil cutting assembly for when cutting soil four directions are on same water flat line, inclination outside the permissible error can not appear, guarantees the accuracy nature of gained sample.
It should be noted that: the size of soil disk 8, bracing piece 1 and base 4 can be confirmed according to the diameter of required biggest sample, and in this embodiment, the diameter of soil disk 8 is about more than sixty percent of the biggest soil cutting ring 6 diameter, and the biggest required diameter is 101 mm, and the diameter of soil disk 8 is 160mm, and bracing piece 1 diameter is 12.5mm, and the diameter of base 4 is 260mm, and the center of soil disk 8 and soil cutting ring 6 is on the same vertical line of perpendicular to base 4.
The torus 7, the connecting blade 2 and the soil cutting ring cutter 6 are located in the same horizontal plane, the heights of the torus 7, the connecting blade 2 and the soil cutting ring cutter 6 are equal, and in the embodiment, the heights of the torus 7, the connecting blade 2 and the soil cutting ring cutter 6 are all 10 mm.
When the soil cutting work is carried out, vaseline is coated on the inner wall and the outer wall of a support rod 1 and a soil cutting ring cutter 6 in the device, the original soil of the obtained blank is placed on a soil disk 8, the plastic semi-ring body 3 is taken down, an upper soil cutting assembly is installed, the soil cutting assembly is placed on the support rod 1 through holes corresponding to four directions, pre-cutting preparation is made, finally the soil cutting ring cutter 6 is moved downwards through a handrail 5 to cut the soil body, and after the soil reaches the bottom, the two ends are cut flat to obtain a required sample.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. The utility model provides a cut native device suitable for triaxial test cylinder weak soil sample which characterized in that includes: a base and a soil cutting assembly;
a soil disk is arranged in the center of the base;
a plurality of support rods are arranged on the outer side of the soil disc along the circumferential direction;
the supporting rods are vertically fixed on the base;
the soil cutting assembly is sleeved on the plurality of supporting rods and is in sliding connection with the plurality of supporting rods;
the soil cutting assembly comprises a ring body, a connecting blade and a soil cutting ring cutter which are horizontally arranged from outside to inside in sequence;
the soil cutting ring cutter is concentrically arranged with the annular body and is fixedly connected with the annular body through the connecting blade;
the circular ring body is correspondingly provided with a through hole matched with the supporting rod in shape;
the annular ring body is connected with the supporting rod in a sliding mode through the through hole.
2. The soil cutting device suitable for the soft soil sample of the triaxial test cylinder as claimed in claim 1, wherein the outer side wall of the soil cutting ring cutter is of a cambered surface structure with gradually narrowed edges from top to bottom;
the outer diameter of the upper surface of the soil cutting ring cutter is larger than the inner diameter of the upper surface of the soil cutting ring cutter;
the inner diameter of the upper surface of the soil cutting ring cutter is equal to the inner diameter of the lower surface of the soil cutting ring cutter.
3. The soil cutting device for the soft soil sample of the triaxial test cylinder according to claim 1, wherein the number of the connecting blades is multiple;
the plurality of connecting blades are uniformly distributed on the outer side of the soil cutting ring cutter along the circumferential direction.
4. The soil cutting device for soft soil samples on cylinders for triaxial test according to claim 1, wherein the connecting blade is a triangular prism blade.
5. A soil cutting device suitable for triaxial test cylinder soft soil samples as claimed in claim 4, wherein the triangular prism blade has a longitudinal section in the form of an isosceles triangle.
6. The soil cutting device suitable for the soft soil sample of the triaxial test cylinder of claim 1, further comprising: the semicircular body is used for fixing the soil cutting assembly on the supporting rod;
the hemicycle body with the bracing piece can be dismantled and be connected.
7. The soil cutting device for the soft soil sample of the triaxial test cylinder of claim 6, wherein the semi-ring body is a plastic semi-ring body.
8. The soil cutting device for the soft soil sample of the triaxial test cylinder as claimed in claim 1, wherein a handrail is fixed to the outer side of the torus.
9. The soil cutting device for the soft soil sample of the triaxial test cylinder as claimed in claim 1, wherein the torus is located right above the soil disk, and the inner diameter of the torus is equal to the diameter of the soil disk.
10. The soil cutting device for the soft soil sample of the triaxial test cylinder as claimed in claim 1, wherein the torus, the connecting blade and the soil cutting ring cutter are located in the same horizontal plane, and the heights of the torus, the connecting blade and the soil cutting ring cutter are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744749.2A CN111751190A (en) | 2020-07-29 | 2020-07-29 | Soil cutting device suitable for triaxial test cylinder soft soil sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744749.2A CN111751190A (en) | 2020-07-29 | 2020-07-29 | Soil cutting device suitable for triaxial test cylinder soft soil sample |
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| Publication Number | Publication Date |
|---|---|
| CN111751190A true CN111751190A (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010744749.2A Pending CN111751190A (en) | 2020-07-29 | 2020-07-29 | Soil cutting device suitable for triaxial test cylinder soft soil sample |
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| CN (1) | CN111751190A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062082A (en) * | 2021-11-17 | 2022-02-18 | 桂林理工大学 | Original state soil triaxial sample rotary-drop preparation device and method |
| CN114486436A (en) * | 2022-01-26 | 2022-05-13 | 中铁第四勘察设计院集团有限公司 | Device for preparing cutting type undisturbed soil sample |
-
2020
- 2020-07-29 CN CN202010744749.2A patent/CN111751190A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062082A (en) * | 2021-11-17 | 2022-02-18 | 桂林理工大学 | Original state soil triaxial sample rotary-drop preparation device and method |
| CN114062082B (en) * | 2021-11-17 | 2023-08-01 | 桂林理工大学 | Device and method for preparing undisturbed soil triaxial sample through spin-drop |
| CN114486436A (en) * | 2022-01-26 | 2022-05-13 | 中铁第四勘察设计院集团有限公司 | Device for preparing cutting type undisturbed soil sample |
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