CN215812155U - Dynamic-load direct shear apparatus suitable for coarse-grained soil - Google Patents
Dynamic-load direct shear apparatus suitable for coarse-grained soil Download PDFInfo
- Publication number
- CN215812155U CN215812155U CN202022801880.6U CN202022801880U CN215812155U CN 215812155 U CN215812155 U CN 215812155U CN 202022801880 U CN202022801880 U CN 202022801880U CN 215812155 U CN215812155 U CN 215812155U
- Authority
- CN
- China
- Prior art keywords
- direct shear
- force
- shear apparatus
- box
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002689 soil Substances 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 31
- 238000004590 computer program Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000010008 shearing Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 238000010998 test method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a dynamic load direct shear apparatus suitable for coarse-grained soil, which comprises a direct shear apparatus bottom plate, wherein a direct shear apparatus counter-force frame is fixed on the direct shear apparatus bottom plate, a lower shear box and an upper shear box for containing samples are stacked below the direct shear apparatus counter-force frame above the direct shear apparatus bottom plate from bottom to top, the lower shear box is fixed on one side of the direct shear apparatus counter-force frame through a horizontal limiter, the side part of the upper shear box, which is opposite to the fixed side of the lower shear box, is fixed with the other side of the direct shear apparatus counter-force frame through a horizontal force and a displacement sensor, the upper end face of the upper shear box is fixedly connected with the middle part of the direct shear apparatus counter-force frame through a vertical force and displacement sensor, a motor is also fixed on the vertical force and displacement sensor, the rotating shaft of the motor is fixedly connected with one end of a connecting rod, the rotating shaft of the rotating shaft drives the connecting rod to swing, and the other end of the connecting rod is fixedly connected with a dynamic weight. The utility model improves the precision of geotechnical parameter test.
Description
Technical Field
The utility model belongs to the technical field of direct shear tests of coarse-grained soil, and relates to a dynamic direct shear apparatus suitable for coarse-grained soil.
Background
The current direct shear test is carried out according to the regulations of geotechnical test method standard GB/T50123-2019.
Firstly, the range of the displacement sensor in the standard of the geotechnical test method is 5 mm-10 mm, the division value is 0.01mm, the range of some special soil sensors can not meet the requirement of shearing damage, and the displacement sensor with the maximum range of 50mm is adopted in the utility model to meet the requirement of all soil direct shear tests.
And secondly, a direct shear soil sample in the standard soil test method is cut by a cutting ring with the inner diameter of 6.18cm and the height of 2cm, and the direct shear size is only suitable for fine soil with the diameter of less than 2mm but not suitable for coarse-grained soil. This patent adopts to cut on the box, box cross sectional dimension 500mm under the box, highly is 300mm, is applicable to fine grain soil promptly and also is applicable to coarse grain soil, presses close to the engineering reality.
Thirdly, the application and reading of the direct shear method and the horizontal load in the standard of the geotechnical test method are both carried out manually, the reading of the displacement sensor is also read manually, the test data can be influenced by the subjective factors of the testers, and the result has larger error. The reading of load sensor and displacement sensor in this patent all has computer program automatic reading, has avoided human error.
Disclosure of Invention
In view of the above, the present invention provides a dynamic direct shear apparatus suitable for coarse-grained soil, which optimizes a direct shear test to more accurately determine a shear strength index of the soil.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a move and carry staight scissors appearance suitable for coarse grain soil, including the staight scissors appearance bottom plate, be fixed with staight scissors appearance counter-force frame on the staight scissors appearance bottom plate, staight scissors appearance counter-force frame below from the bottom up stacks the lower shearing box and the last shearing box that are used for holding the sample, the lower shearing box passes through horizontal limiter to be fixed in one side of staight scissors appearance counter-force frame, the lateral part of the last shearing box relative with the fixed side of staight scissors box passes through the level to power and displacement sensor and is fixed with the other one side of staight scissors counter-force frame, the up end of going up the shearing box is through the middle part fixed connection of vertical to power and displacement sensor and staight scissors appearance counter-force frame, still be fixed with the motor on vertical to power and the displacement sensor, the pivot of motor is concreted with the one end of connecting rod, the rotation of pivot drives the swing of connecting rod, the other one end and the dynamic weight of connecting rod concreties.
Further, the lower and upper shear boxes are 500mm by 500mm in size and 300mm in height, respectively.
Furthermore, sensors of the horizontal force and displacement sensor and sensors of the vertical force and displacement sensor are controlled by computer programs respectively, and loading and data reading are completed by a computer.
Further, the direct shear apparatus counterforce frame is an inverted U-shaped structure.
Further, the both ends of direct shear appearance counter-force frame are fixed respectively in the both sides of direct shear appearance bottom plate, and direct shear appearance counter-force frame is fixed between two parties on the direct shear appearance bottom plate, and direct shear appearance counter-force frame has formed the outer frame of direct shear appearance, and this frame is formed by the welding of 50mm thick steel plate.
The utility model has the beneficial effects that:
firstly, the method comprises the following steps: the displacement sensor with the maximum measuring range of 50mm is adopted to meet the requirements of all soil body direct shear tests;
secondly, the method comprises the following steps: the utility model adopts the shearing box with the upper and lower box section size of 500mm x 500mm and the height of 300mm, which is suitable for both fine-grained soil and coarse-grained soil and is close to the actual engineering;
thirdly, the method comprises the following steps: the load sensor and the displacement sensor are read automatically by a computer program, so that human errors are avoided;
fourthly: when the direct shear apparatus of the utility model applies normal load, the engine and the movable weight are added in the normal direction, thereby realizing the function of applying normal dynamic load, solving the measurement of direct shear strength under the action of dynamic load, leading the shearing process to be closer to the in-situ stress condition of soil body, improving the precision of geotechnical parameter test and providing more accurate direct shear data for engineering investigation, design and construction.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a perspective view of an embodiment of the present invention;
fig. 2 is a front view of an embodiment of the present invention.
Description of reference numerals:
1. a direct shear apparatus base plate; 2. a lower shear box; 3. an upper shearing box; 4. a horizontal force and displacement sensor; 5. a direct shear counter-force frame; 6. moving the weight; 7. a connecting rod; 8. a rotating shaft; 9. a vertical force and displacement sensor; 10. a horizontal stopper; 11. an electric motor.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in the figure, a move and carry direct shear apparatus suitable for coarse grain soil, including direct shear apparatus bottom plate 1, be fixed with the direct shear apparatus counter-force frame 5 of a U type on the direct shear apparatus bottom plate 1, the both ends of direct shear apparatus counter-force frame 5 are fixed respectively in the both sides of direct shear apparatus bottom plate 1, and direct shear apparatus counter-force frame 5 is fixed between two parties on direct shear apparatus bottom plate 1. The direct shear counter-force frame 5 forms the outer frame of the direct shear, which is welded from 50mm thick steel plates.
1 top direct shear appearance counter-force frame of direct shear appearance bottom plate 5 below from the bottom up stacks down and has been used for holding the lower shear box 2 and the box 3 of cuting upward of sample, and the contact surface of lower shear box 2 and the box 3 of cuting upward is the shear plane, and the size of lower shear box 2 and the box 3 of cuting upward is 500mm respectively, highly is 300mm respectively, and this and traditional shear appearance are compared and have possessed bigger shear plane to satisfy the requirement of cuting coarse grain soil.
The lower shear box 2 is fixed on one side of the reaction frame 5 of the direct shear apparatus through a horizontal limiter 10, so that the lower shear box 22 is ensured not to move in the test process.
The lateral part of the upper shearing box 3 opposite to the fixed side of the lower shearing box 2 is fixed with the other side of the direct shear apparatus counter-force frame 5 through the horizontal force and displacement sensor 4, the horizontal force and displacement sensor 4 provides detection of the horizontal force and shearing displacement for the upper shearing box 3, the sensors are controlled through a computer program, loading and data reading are completed through a computer, and therefore the test result is more accurate, and the operation is more convenient.
Go up the middle part fixed connection of shearing box 3's up end through vertical to power and displacement sensor 9 and staight scissors appearance counter-force frame 5, vertical to power and displacement sensor 9 for last shearing box 3 provides vertical power and vertical displacement detection, vertical to power and displacement sensor 9 through computer program control, accomplish reading of loading and data by the computer, make the test result more accurate, it is more convenient to operate.
The vertical force and displacement sensor 9 is also fixed with a motor 11, a rotating shaft 8 of the motor 11 is fixedly connected with one end of the connecting rod 7, and the other end of the connecting rod 7 is fixedly connected with the movable weight 6. The motor 11 drives the rotating shaft 8 to work, the rotating shaft 8 drives the connecting rod 7 to swing, and the connecting rod 7 drives the movable weight 6 to swing.
The main control parameters of the dynamic load are load frequency and load size, the rotation frequency of the motor 11 controls the load frequency, and the size of the dynamic weight 6 and the distance between the dynamic weight 6 and the rotating shaft 8 control the load size, so that the simulation of the dynamic load is realized, and the problem of measuring the direct shear strength under the action of the dynamic load is solved.
The counterforce frame can provide counterforce for the horizontal force and displacement sensor 4 and the vertical force and displacement sensor 9.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a move and carry direct shear appearance suitable for coarse grain soil which characterized in that: comprises a direct shear apparatus bottom plate (1), a direct shear apparatus counter-force frame (5) is fixed on the direct shear apparatus bottom plate (1), a lower shear box (2) and an upper shear box (3) for containing samples are stacked below the direct shear apparatus counter-force frame (5) above the direct shear apparatus bottom plate (1) from bottom to top, the lower shear box (2) is fixed on one side of the direct shear apparatus counter-force frame (5) through a horizontal position limiter (10), the lateral part of the upper shear box (3) opposite to the fixed side of the lower shear box (2) is fixed on the other side of the direct shear apparatus counter-force frame (5) through a horizontal force and displacement sensor (4), the upper end face of the upper shear box (3) is fixedly connected with the middle part of the direct shear apparatus frame (5) through a vertical force and displacement sensor (9), a motor (11) is also fixed on the vertical force and displacement sensor (9), a rotating shaft (8) of the motor (11) is fixedly connected with one end of a connecting rod (7), the rotation of the rotating shaft (8) drives the connecting rod (7) to swing, and the other end of the connecting rod (7) is fixedly connected with the movable weight (6).
2. The dynamic direct shear apparatus suitable for coarse-grained soil according to claim 1, characterized in that: the lower cutting box (2) and the upper cutting box (3) are 500mm by 500mm in size and 300mm in height respectively.
3. The dynamic direct shear apparatus suitable for coarse-grained soil according to claim 1, characterized in that: the sensors of the horizontal force and displacement sensor (4) and the vertical force and displacement sensor (9) are controlled by computer programs respectively, and loading and data reading are completed by a computer.
4. The dynamic direct shear apparatus suitable for coarse-grained soil according to claim 1, characterized in that: the direct shear apparatus counterforce frame (5) is of an inverted U-shaped structure.
5. The dynamic direct shear apparatus suitable for coarse-grained soil according to claim 4, wherein: the both ends of direct shear appearance counter-force frame (5) are fixed respectively in the both sides of direct shear appearance bottom plate (1), and direct shear appearance counter-force frame (5) are fixed between two parties on direct shear appearance bottom plate (1), and direct shear appearance counter-force frame (5) have formed the outer frame of direct shear appearance, and this frame is formed by the welding of 50mm thick steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022801880.6U CN215812155U (en) | 2020-11-27 | 2020-11-27 | Dynamic-load direct shear apparatus suitable for coarse-grained soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022801880.6U CN215812155U (en) | 2020-11-27 | 2020-11-27 | Dynamic-load direct shear apparatus suitable for coarse-grained soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215812155U true CN215812155U (en) | 2022-02-11 |
Family
ID=80124473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022801880.6U Expired - Fee Related CN215812155U (en) | 2020-11-27 | 2020-11-27 | Dynamic-load direct shear apparatus suitable for coarse-grained soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215812155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793861A (en) * | 2023-08-28 | 2023-09-22 | 安徽建筑大学 | Irregular rock mass shear test device |
-
2020
- 2020-11-27 CN CN202022801880.6U patent/CN215812155U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793861A (en) * | 2023-08-28 | 2023-09-22 | 安徽建筑大学 | Irregular rock mass shear test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215812155U (en) | Dynamic-load direct shear apparatus suitable for coarse-grained soil | |
| CN111650085A (en) | Portable soil body normal position density tester | |
| CN101819075B (en) | One-way support shearing force measuring device and method | |
| CN105973550A (en) | Integrated measuring device and method for five kinds of static rigidity of linear guide pair | |
| CN110629812A (en) | Loading test device and method for vertical dynamic and static loads of single pile | |
| CN110186545A (en) | A kind of bunker scale auxiliary examination device and its implementation | |
| CN111397562A (en) | Device and method for testing thickness of membrane electrode assembly with high precision | |
| CN201273850Y (en) | Gravity center detection apparatus for small operation machine | |
| CN106644329A (en) | 120MN bridge support tester for high-precision dynamic measurement | |
| CN218121641U (en) | Interface compression shear test device | |
| CN215003451U (en) | Online thickness gauge of high pressure | |
| CN216846080U (en) | Novel indentation size measuring instrument | |
| CN211696229U (en) | Thickness detection device used on polymer lithium battery | |
| CN212646386U (en) | Portable soil body normal position density tester | |
| CN211447044U (en) | Loading test device for vertical dynamic and static loads of single pile | |
| CN109932246B (en) | Geosynthetic material roof pressure creep test device | |
| CN210376012U (en) | Loading system of stiffening rib stiffening type rectangular concrete-filled steel tube column | |
| CN217738074U (en) | Measuring device | |
| CN216012039U (en) | Automatic pressurization thickness measuring equipment | |
| CN212410291U (en) | Deformation modulus automatic loading test system | |
| CN220872230U (en) | Shear test fixture and shear test instrument | |
| CN213148616U (en) | Direct shear apparatus under coupling action of dynamic load and static load | |
| CN219641858U (en) | Tracking test device | |
| CN214007463U (en) | Pump body rigidity detection device | |
| CN220524898U (en) | Soft package polymer lithium ion battery packaging thickness detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220211 |