CN216246161U - Device for measuring test piece shear surface undulation degree before in-situ direct shear test - Google Patents
Device for measuring test piece shear surface undulation degree before in-situ direct shear test Download PDFInfo
- Publication number
- CN216246161U CN216246161U CN202122902688.0U CN202122902688U CN216246161U CN 216246161 U CN216246161 U CN 216246161U CN 202122902688 U CN202122902688 U CN 202122902688U CN 216246161 U CN216246161 U CN 216246161U
- Authority
- CN
- China
- Prior art keywords
- frame
- measuring
- test
- shear
- test piece
- 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.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a device for measuring the undulation degree of a shear surface of a test piece before an in-situ direct shear test, relates to the field of engineering geological survey design, and solves the problem of poor precision of the existing measuring method. The technical scheme adopted by the utility model is as follows: the device for measuring the undulation degree of the shear surface of the test piece before the in-situ direct shear test comprises a frame and an electronic distance meter, wherein the frame is vertically communicated, the frame is provided with at least one level, the bottom of the frame is provided with at least three supporting legs, height adjusting structures are arranged on the supporting legs, and a measuring area is formed inside the frame; a sliding rod is arranged between two opposite sides of the top of the frame, an electronic distance measuring device is arranged on the sliding rod, and the measuring direction of the electronic distance measuring device is vertical downward and covers the measuring area. The frame is placed above the test piece, so that the shearing surface of the test piece is positioned in the measuring area in the frame, and the undulation degree of the shearing surface can be measured accurately. The method is used for measuring the undulation degree of the shear surface of the test piece before the in-situ direct shear test.
Description
Technical Field
The utility model relates to the field of engineering geological investigation design, in particular to a device for measuring the undulation degree of a shearing surface of a test piece before an in-situ direct shear test.
Background
The field direct shear test is a test in which a preset shear surface applies shear force under the action of normal stress until a test piece is subjected to shear failure, and the test aims at measuring the capability of the test piece for resisting the shear failure and providing shear strength parameters for design. The on-site direct shear test is divided into a direct shear test of a contact surface of concrete and a rock body, a direct shear test of a structural surface, a direct shear test of a rock body and the like.
According to relevant standards, the undulation degree of the shearing surface is measured before a field direct shear test. The traditional measurement method is as follows: a rectangular frame is made according to the size of the shearing surface, the shearing surface is covered by the rectangular frame, the rectangular frame is divided into lattices with certain transverse and longitudinal intervals by ropes after the rectangular frame is flattened, then the distance from the corresponding measuring point of the shearing surface to the ropes is vertically measured by tape measures from all the lattices, and then a curve is drawn according to the measured data, namely the undulation degree of the shearing surface. The traditional measuring method has poor measuring precision and cannot accurately reflect the undulation degree of the shear plane.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device for measuring the undulation degree of a shear surface of a test piece before an in-situ direct shear test, which solves the problem of poor precision of the existing measuring method.
The technical scheme adopted by the utility model is as follows: the device for measuring the undulation degree of the shear surface of the test piece before the in-situ direct shear test comprises a frame and an electronic distance meter, wherein the frame is vertically communicated, the frame is provided with at least one level, the bottom of the frame is provided with at least three supporting legs, height adjusting structures are arranged on the supporting legs, and a measuring area is formed inside the frame; a sliding rod is arranged between two opposite sides of the top of the frame, an electronic distance measuring device is arranged on the sliding rod, and the measuring direction of the electronic distance measuring device is vertical downward and covers the measuring area.
Further, the method comprises the following steps: the sliding rod is provided with length scales.
Specifically, the method comprises the following steps: the zero scale of the length scale on the sliding rod is positioned at the position of the electronic range finder.
Further, the method comprises the following steps: the top of the frame is provided with length scales.
Further, the method comprises the following steps: the zero scale of the length scale is positioned in the middle of each side of the frame.
Further, the method comprises the following steps: the frame is integrally rectangular, the four sides of the top of the frame are respectively provided with continuous clamping grooves, and the sliding rods are placed in the clamping grooves.
Further, the method comprises the following steps: the clamping groove is in a wave shape, a concave-convex shape or a sawtooth shape.
Specifically, the method comprises the following steps: the height adjusting structure is a threaded rod and a threaded sleeve matched with the threaded rod.
Specifically, the method comprises the following steps: the number of the supporting legs is four, and the four supporting legs are respectively arranged at the four corners of the frame; the number of the water levels is four, and the four water levels are respectively arranged on four sides of the frame.
Specifically, the method comprises the following steps: the electronic distance meter is a laser distance meter with a storage function.
The utility model has the beneficial effects that: the frame is placed above the test piece, so that the shearing surface of the test piece is positioned in the measuring area in the frame, and the undulation degree of the shearing surface can be measured accurately. The electronic distance measuring device can move horizontally, so that shear plane data can be accurately obtained, the measuring precision and efficiency are improved, and the test quality is obviously improved.
The frame top sets up continuous draw-in groove, and the slide bar is placed in the draw-in groove, is convenient for along the axial displacement slide bar of slide bar to realize electronic range finder's directional translation, thereby accomplish the measurement. The electronic distance meter has a storage function, and measurement data can be conveniently led into a computer in a centralized manner and drawn into a picture.
Drawings
FIG. 1 is a schematic structural diagram of a device for measuring the undulation degree of a shear surface of a test piece before an in-situ direct shear test.
Reference numerals: frame 1, electronic range finder 2, spirit level 3, landing leg 4, slide bar 5, shear plane 6.
Detailed Description
The utility model will be further explained with reference to the drawings.
As shown in fig. 1, the device for measuring the undulation of the shear plane of the test piece before the in-situ direct shear test of the present invention comprises a frame 1 and an electronic distance meter 2, wherein the frame 1 is through from top to bottom, a measuring area is formed inside the frame 1, the side wall of the frame 1 is open or provided with side plates, and the overall contour of the frame 1 can be a cylinder or a prism, preferably a cuboid, that is, a quadrangular prism. The frame 1 is provided with at least one level 3, the level 3 is used for reflecting the horizontal condition of the frame 1, and the level 3 can be a level bubble and is arranged at the top of the frame 1; alternatively, the leveling devices 3 are tube leveling devices, four leveling devices 3 are provided, and the four leveling devices 3 are respectively provided on four sides of the frame 1. The bottom of frame 1 sets up three at least landing legs 4, sets up height adjustment structure on the landing leg 4, and height adjustment structure is used for leveling frame 1, makes the top of frame 1 be the level form. For example, four legs 4 are provided, and the four legs 4 are respectively disposed at four corners of the frame 1; the height adjusting structure is a threaded rod and a threaded sleeve matched with the threaded rod. The frame 1 and legs 4 are preferably both steel to suit the use environment of the in situ test.
A sliding bar 5 is placed between the opposite sides of the top of the frame 1. The final purpose of leveling the top of the frame 1 is to level the sliding bars 5 so that the sliding bars 5 are in a horizontal plane. The sliding rod 5 is provided with an electronic distance measuring device 2, and the measuring direction of the electronic distance measuring device 2 is vertical downward and covers the measuring area. The electronic distance measuring device 2 can be directly fixed on the sliding rod 5, and during measurement, the sliding rod 5 translates along the axis direction of the sliding rod, so that the electronic distance measuring device 2 moves; alternatively, the slide bar 5 is fixed to the frame 1, and the electronic distance measuring device 2 is horizontally moved along the axial direction of the slide bar 5 during measurement. In order to facilitate the visual observation of the translation distance of the sliding rod 5 relative to the frame 1, the sliding rod 5 is provided with length scales. The zero scale of the length scale on the sliding bar 5 is preferably located at the position of the electronic distance meter 2. The electronic distance measuring device 2 is used for distance measurement, and is preferably a distance measuring device with a high distance measuring range and high measuring precision, such as a laser distance measuring device. The electronic distance measuring device 2 is provided with a power supply and has a storage function, so that data can be intensively exported after multiple measurements.
The frame 1 is cuboid, and when the slide bar 5 was placed in frame 1 and can be followed frame 1 and removed, the four sides at frame 1 top preferably set up continuous draw-in groove respectively, and the slide bar 5 is placed in the draw-in groove, and the draw-in groove plays limiting displacement to slide bar 5, makes slide bar 5 carry out the translation along its axis direction steadily. The clamping grooves are continuously arranged, and the sliding rod 5 can be placed in different clamping grooves, so that the measurement can be carried out at different positions. The clamping groove is in a wave shape, a concave-convex shape or a zigzag shape, and the cross section of the sliding rod 5 is matched with the shape of the clamping groove. The top of the frame 1 is preferably provided with length scales to enable the sliding rod 5 to be accurately translated in a direction perpendicular to its axis. Since the center of the measuring area is the center of the frame 1, the zero scale of the length scale of the top of the frame 1 is preferably located in the middle of each side of the frame 1.
The shear plane of the test piece is generally curved and is shown as a planar shear plane 6 in fig. 1. Before the in-situ direct shear test, firstly, the frame 1 is placed at a test position, and the height adjusting structure of the supporting legs 4 is adjusted to enable the top of the frame to be horizontal; secondly, fixing the electronic distance measuring device 2 in the middle of the sliding rod 5, and placing the sliding rod 5 at a proper position on the top of the frame 1 according to the test requirement; thirdly, slowly moving the sliding rod 5 along the axial direction of the sliding rod 5 to measure the undulation degree of the shearing surface 6, moving the sliding rod 5 along the direction vertical to the axial direction of the sliding rod 5, moving the sliding rod 5 along the axial direction of the sliding rod 5 to measure the undulation degree of the shearing surface 6, and repeating the operation until the measurement is finished; finally, according to the test requirements, data are exported and drawn into a graph, for example, the data are imported into Auto-CAD and drawn into a graph.
Claims (10)
1. Device of measurement test piece shear surface waviness degree before normal position direct shear test, its characterized in that: the electronic distance measuring device comprises a frame (1) and an electronic distance measuring device (2), wherein the frame (1) is vertically communicated, the frame (1) is provided with at least one level (3), the bottom of the frame (1) is provided with at least three supporting legs (4), the supporting legs (4) are provided with height adjusting structures, and a measuring area is formed inside the frame (1); place slide bar (5) between the relative both sides in frame (1) top, set up electronic distance measuring device (2) on slide bar (5), the measuring direction of electronic distance measuring device (2) is vertical downwards and covers the measuring area.
2. The device for measuring the undulation degree of the shear plane of the test piece before the in-situ direct shear test as claimed in claim 1, wherein: the sliding rod (5) is provided with length scales.
3. The device for measuring the undulation degree of the shear plane of the test piece before the in-situ direct shear test as claimed in claim 2, wherein: the zero scale of the length scale on the sliding rod (5) is positioned at the position of the electronic range finder (2).
4. The device for measuring the undulation degree of the shear plane of the test piece before the in-situ direct shear test as claimed in claim 1, wherein: the top of the frame (1) is provided with length scales.
5. The device for measuring the undulation degree of the shear plane of the test piece before the in-situ direct shear test as claimed in claim 4, wherein: the zero scale of the length scale is positioned in the middle of each side of the frame (1).
6. The device for measuring the undulation degree of the shear plane of the test piece before the in-situ direct shear test as claimed in claim 1, wherein: the frame (1) is integrally rectangular, the four sides of the top of the frame (1) are respectively provided with continuous clamping grooves, and the sliding rods (5) are placed in the clamping grooves.
7. The device for measuring the undulation degree of the shear plane of the test piece before the in-situ direct shear test as claimed in claim 6, wherein: the clamping groove is in a wave shape, a concave-convex shape or a sawtooth shape.
8. The device for measuring the undulation degree of the shear surface of the test piece before the in-situ direct shear test as claimed in any one of claims 1 to 7, wherein: the height adjusting structure is a threaded rod and a threaded sleeve matched with the threaded rod.
9. The device for measuring the undulation degree of the shear surface of the test piece before the in-situ direct shear test as claimed in any one of claims 1 to 7, wherein: the number of the supporting legs (4) is four, and the four supporting legs (4) are respectively arranged at four corners of the frame (1); the number of the water levels (3) is four, and the four water levels (3) are respectively arranged on the four sides of the frame (1).
10. The device for measuring the undulation degree of the shear surface of the test piece before the in-situ direct shear test as claimed in any one of claims 1 to 7, wherein: the electronic distance meter (2) is a laser distance meter with a storage function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122902688.0U CN216246161U (en) | 2021-11-23 | 2021-11-23 | Device for measuring test piece shear surface undulation degree before in-situ direct shear test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122902688.0U CN216246161U (en) | 2021-11-23 | 2021-11-23 | Device for measuring test piece shear surface undulation degree before in-situ direct shear test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216246161U true CN216246161U (en) | 2022-04-08 |
Family
ID=80957296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122902688.0U Active CN216246161U (en) | 2021-11-23 | 2021-11-23 | Device for measuring test piece shear surface undulation degree before in-situ direct shear test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216246161U (en) |
-
2021
- 2021-11-23 CN CN202122902688.0U patent/CN216246161U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104062189B (en) | Structural face shear strength dimensional effect testing machine | |
| CN106017366A (en) | Straightness comprehensive detection device | |
| WO2021042631A1 (en) | Three-dimensional movement deformation measurement system and application thereof in three-dimensional similar simulation experiment | |
| CN109211549B (en) | Structural component plane outer airbag loading test device | |
| CN203949829U (en) | Structural face shear strength size effect testing machine | |
| CN206113924U (en) | Special slope measuring device of building engineering | |
| CN216246161U (en) | Device for measuring test piece shear surface undulation degree before in-situ direct shear test | |
| CN105973723A (en) | Slope soil shear strength site test device and method | |
| CN107702693B (en) | Geological section measuring device and method | |
| CN210603135U (en) | Building templates straightness measuring tool that hangs down | |
| CN205879134U (en) | Straightness accuracy comprehensive testing device | |
| CN206160922U (en) | Be used for deformation of scene of a traffic accident accident car to investigate detection device on spot | |
| CN106969693A (en) | A kind of expansion filling body test block expansion rate determines device | |
| CN115290045B (en) | Levelness acquisition system and method for building site equipment | |
| CN110736416A (en) | Flatness detection ruler and method for prefabricated shear wall | |
| CN106352841A (en) | Flatness detecting device for elevator skirt panel | |
| CN213420480U (en) | Automatic leveling device based on mechanized construction of brickwork | |
| CN218238644U (en) | Building structure nondestructive test device | |
| CN212031223U (en) | A concrete performance detection device for building engineering | |
| CN212159508U (en) | Drying shrinkage testing device | |
| CN112630032A (en) | Adjustable prototype test device for pipe curtain structural member | |
| CN206095096U (en) | Concrete block dipperstick | |
| CN106767904B (en) | Calibrating device of vertical plumb line measurement system | |
| CN217541747U (en) | Shear wall post line box elevation and protrusion height measuring device | |
| CN110827655A (en) | Test loading device of assembled structure model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |