CN210376010U - Interface vibration single shear test device for simulating power contact problem - Google Patents
Interface vibration single shear test device for simulating power contact problem Download PDFInfo
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- 239000000523 sample Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
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Abstract
An interface vibration single shear test device for simulating a dynamic contact problem is suitable for rock and soil detection. The system comprises a fixed rigid body frame, a hydraulic loading system, an interface shear box system, an electromagnetic type vibration table and a data acquisition system; the fixed rigid frame has the functions of holding and stabilizing, the hydraulic loading system consists of a hollow hydraulic jack, a through load sensor and a damping spring, the interface shearing box system consists of a soil shearing box and a structural panel, the electromagnetic type vibration table is used for providing horizontal vibration force, and the data acquisition system consists of a displacement sensor, a load sensor, a vibration meter and a digital displacement photographic system. Determining a test material, mounting the test material, carrying out a consolidation test and carrying out a vibration shear test. The problems of soil leakage, inaccurate displacement measurement, friction and the like of the shearing box are effectively avoided, and the shearing box is easy to operate, low in cost and wide in applicability.
Description
The technical field is as follows:
the utility model relates to an interface vibration single shear test device is particularly useful for detecting an interface vibration single shear test device who uses for simulating power contact problem to the ground.
Background art:
modern soil dynamics have received a great deal of attention and extensive and intensive experimental research since the japanese new diarrhea (niidata) earthquake in 1964, the Alaskan (Alaskan) earthquake in the united states, and the down mountain earthquake in 1976. The instrument for testing the soil dynamics characteristics mainly comprises a dynamic triaxial apparatus, a dynamic torsional shear apparatus, a dynamic simple shear apparatus and the like. Compared with a dynamic triaxial apparatus and a dynamic torsional shear apparatus, the dynamic simple shear apparatus has the advantages that the loading condition is closer to the actual earthquake action, the shear stress can be directly applied, the shear strain can be directly measured, and the like. However, the existing dynamic single shear apparatus still has the technical problems of soil leakage of a shear box, friction between constraint and a soil sample, inaccurate displacement test, undefined contact surface thickness, boundary effect and the like in the shearing process, and the reliability and precision of test simulation are seriously influenced. At present, the capacity of batch production of the circular single shear apparatus does not exist in China, and the most advanced technology in the world is currently in the United kingdom in Europe. In addition, the static and dynamic single shear test system for testing the rock-soil mass is widely applied and accepted, and the interface shear apparatus, especially the interface single shear apparatus, is obviously insufficient in research.
In the field of the current interface shear apparatus, no effective measure for preventing the problems of soil leakage, contact friction and the like of a shear box exists basically. An interface shear apparatus similar to the present invention, such as a cyclic loading shear apparatus disclosed in CN1401987A for observing the mechanical characteristics of the contact surface between soil and structural member, adopts a soil baffle plate with a spring installed outside the soil container box, but additionally increases the boundary friction of the contact surface; as well as the shear box, the stress test method and the device disclosed in CN108318354A, and the method of adding a chute or a slide rail between the upper and lower shear boxes adopted in the rolling friction shear box disclosed in CN202928876U for large-scale direct shear test, the friction between the upper and lower shear boxes can only be locally reduced, and the process is complex, and is not suitable for the friction of any contact area between soil and the box, between the ring and the ring, between the ring and the box, etc. to be solved by the present invention.
In summary, in the existing research, the research on the vibration single shearing device for the contact surface is still less, and there is no effective measure for preventing the shearing box from leaking soil and contact friction, and there is no improved means for reducing the experimental error to simulate the stress and deformation characteristics of the contact surface more truly.
The invention content is as follows:
the purpose of the invention is as follows: aiming at the defects of the technology, the interface vibration single shear test device for simulating the power contact problem is simple in structure, convenient to use, good in detection effect and small in test error.
In order to achieve the above object, the interface vibration single shear test device for simulating the dynamic contact problem of the utility model comprises a fixed rigid frame, a hydraulic loading system, an interface shear box system, an electromagnetic type vibration table and a data acquisition system;
the fixed rigid body frame is a square frame with front and back openings, the center of the top is provided with a threaded mounting hole and a circular opening, and the bottom is symmetrically provided with two L-shaped fixed angle brackets;
the hydraulic loading system comprises a hollow hydraulic jack, a piston cylinder of the hollow hydraulic jack is fixed on a fixed rigid body frame through a screw and a nut, a vertical pressure head is arranged on a piston of the hollow hydraulic jack, a damping spring plate is arranged between the vertical pressure head and the piston of the hollow hydraulic jack, four through holes are formed in the damping spring plate, a single-end stud is arranged in each through hole, one end of each single-end stud is of a smooth structure, the other end of each single-end stud is of a threaded structure, one end of each smooth structure is connected with the piston of the hollow hydraulic jack, a smooth round hole is formed in the joint of the piston and the smooth structure of the single-end stud, one end of each single-end stud threaded structure is connected with the vertical pressure head, and the top end of each single-end stud is spaced from the top end of the smooth round hole;
the interface shear box system comprises a soil body shear box and a structural panel, wherein the structural panel is fixed on a base, the soil body shear box is arranged on the structural panel and comprises a rigid shear box and a flexible shear box, the flexible shear box is formed by overlapping a plurality of stacked rings and is placed below the rigid shear box, a soil body is arranged in the soil body shear box, positioning pins are arranged on corners of the rigid shear box and the flexible shear box to fixedly install the soil body, a vertical pressure head extends into the rigid shear box from the top, a soil blocking hidden plate is arranged between the stacked rings, which are in contact with the structural panel, of the flexible shear box, and a joint bearing is arranged in the shear direction of the stacked rings at the contact surface;
the electromagnetic vibration table comprises a table top and a table body, wherein a base is connected above the table top through a mounting bolt, and the table body fixedly connected with a corner bracket for fixing a rigid body frame is arranged below the table top;
the data acquisition system comprises a feed-through load sensor, a rebound type LVDT vertical displacement sensor, a push-pull force sensor, a rebound type LVDT horizontal displacement sensor and a handheld vibration measuring instrument, wherein the feed-through load sensor is arranged at the contact position of the single-end stud and the vertical pressure head and is used for measuring the passing of the vertical load, the rebound type LVDT vertical displacement sensor is arranged in the hollow hydraulic jack, the probe of the displacement sensor is vertically contacted with the vertical pressure head, the end part of the displacement sensor is fixed on the fixed rigid body frame through the mounting frame, the push-pull force sensor is fixed on the fixed angle bracket through the mounting platform, the measuring rod arranged on the push-pull force sensor is connected with the joint bearing on the flexible shear box bottom laminated ring and is used for measuring the stress at the contact surface of the soil and the structure; the push-pull force sensor is fixed on the fixed angle bracket through the mounting platform, is connected with the joint bearing on the flexible shearing box bottom laminated ring through the measuring rod and is used for measuring the stress at the contact surface of the soil and the structure; the rebound type LVDT horizontal displacement sensor is fixed on the fixed angle bracket through the universal magnetic gauge stand, a probe of the rebound type LVDT horizontal displacement sensor is always vertical to the side face of the structural panel by utilizing the telescopic function of the rebound type LVDT horizontal displacement sensor and is used for measuring the real horizontal displacement of the structural panel, and the handheld vibration measuring instruments are respectively arranged on the soil body, the contact surface or the structural panel and are used for detecting the displacement, the speed and the acceleration of the soil body, the contact surface or the structural panel.
The vertical displacement sensor adopts a rebound vertical displacement sensor, the measuring range is +/-5 mm, and a front-end probe is in contact with the vertical pressure head and is used for observing the vertical body change of the soil body; the vertical load sensor adopts a feed-through type, the measuring range is 500kg, and the vertical load sensor is matched with a displacement sensor.
The height of the rigid shearing box is 30mm or 60mm, the lower flexible shearing box is composed of 25 square ring stacking frames, the height of each ring stacking frame is 2mm, the plane thickness is 10mm, the soil body length is 100mm, the height adjustable range is 50-100 mm, the size of the structural panel is 400 multiplied by 200 multiplied by 50mm, the structural panel is fixed on a vibration table through a base, in order to facilitate installation and sample preparation, positioning pins are arranged on the corners around the shearing box, in order to reduce test errors caused by friction at each position, Teflon adhesive tapes or Teflon spray are adopted to treat each contact surface, in order to prevent soil body loss in the vibration process, a soil retaining dark plate is installed in the middle of the lowermost ring stacking, wherein the height of the soil retaining dark plate is 1.8mm, when the ring stacking is lifted, the dark plate automatically falls and is used for retaining soil, in order to facilitate installation of a sensor, and joint bearings are installed on the ring stacking at the contact surface.
The electromagnetic type vibration table is LD-50PHP and is used for providing horizontal vibration force, the table surface size is 500 multiplied by 500mm, sine waves, frequency modulation, frequency sweeping, programming, frequency doubling, logarithm, amplitude, acceleration, exciting force, any time, fixed acceleration and fixed amplitude functions can be set, the frequency range is 0-600 Hz, the amplitude is taken as the main when the frequency is 0-80 Hz, the fixed acceleration is taken as the main when the frequency is more than 30Hz, the acceleration is 0-22 g, and the electromagnetic type vibration table displays a relative curve graph of the frequency, the amplitude and the acceleration along with the time through a connected computer system.
The handheld vibratory meter is model LD-T1.
The middle point of the lower edge of the rigid shearing box is marked with a coordinate zero point, the middle position of each stack ring of the flexible shearing box is marked with a black line as a reference line, a red point is marked on the reference line as a reference point, a camera is arranged in the direction vertical to the vibration direction of the soil shearing box, the relative position of the marked point is photographed and recorded in real time through the camera, and each stack ring displacement and the relative displacement among the stack rings can be obtained after the photo is processed through an image analysis technology.
Has the advantages that:
the utility model provides a soil and structure contact surface vibration single shear test device for simulating power contact problem has effectively avoided shearing box soil leakage problem through the dark board of the installation fender soil in lower floor's pile ring, shear dislocation area thickness measurement problem has been solved through digital displacement photographic technique, test error that friction brought has effectively been alleviated through pasting special fluorine dragon sticky tape and spraying special fluorine dragon spraying between soil and box, ring and ring, ring and box, can be used for studying interface shear strength change law and shear dislocation deformation law that different soil and structure contact surface produced under the static and dynamic load, and be used for confirming shear zone thickness, interface static and dynamic friction angle, cohesion, shear strength, interface normal direction, tangential stress strain relation, dynamic shear modulus and dynamic damping ratio etc.; compared with other interface shearing instruments, the test equipment is easy to operate, low in cost and wide in applicability.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the device of the present invention;
FIG. 2 is a schematic size diagram of the hydraulic loading system of the apparatus of the present invention;
fig. 3 is a schematic size diagram of an interface shear box system of the apparatus of the present invention;
fig. 4 is a schematic view of the dark earth-retaining plate of fig. 1.
In the figure: the device comprises a rigid body frame, a screw rod, a nut, a fixing angle bracket, a hollow hydraulic jack, a damping spring plate, a load sensor, a vertical pressure head, a screw bolt, a soil mass, a rigid shearing box, a flexible shearing box, a positioning pin, a soil retaining hidden plate, a joint bearing, a structural panel, a base, a bolt, a vibrating table top, a vertical displacement sensor, a mounting frame, a reference line, a reference point, a push-pull force sensor, a mounting platform, a measuring rod, a horizontal displacement sensor, a universal magnetic gauge seat, a positioning pin, a positioning plate, a positioning pin, a positioning block, a positioning plate, a positioning block and a positioning rod, wherein the rigid body frame is fixed on the rigid body frame, the screw rod, the screw bolt, the.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-2, the interface vibration single shear test device for simulating the dynamic contact problem of the present invention comprises a fixed rigid frame 1, a hydraulic loading system, an interface shear box system, an electromagnetic vibration table and a data acquisition system;
the fixed rigid body frame 1 is a square frame with front and back openings, the center of the top is provided with a threaded mounting hole and a circular opening, and the bottom is symmetrically provided with two L-shaped fixed angle brackets 4;
the hydraulic loading system comprises a hollow hydraulic jack 5, a piston cylinder of the hollow hydraulic jack 5 is fixed on a fixed rigid body frame 1 through a screw rod 2 and a nut 3, a vertical pressure head 8 is arranged on a piston of the hollow hydraulic jack 5, a damping spring plate 6 is arranged between the vertical pressure head 8 and the piston of the hollow hydraulic jack 5, four through holes are arranged on the damping spring plate 6, a single-end stud 9 is arranged in each through hole, one end of each single-end stud 9 is of a smooth structure, and the other end of each single-end stud 9 is of a threaded structure, one end of the smooth structure is connected with a piston of the hollow hydraulic jack 5, a smooth round hole is formed in the joint of the piston and the smooth structure of the single-end stud 9, one end of the threaded structure of the single-end stud 9 is connected with the vertical pressure head 8, and a certain distance is reserved between the top end of the single-end stud 9 and the top end of the smooth round hole in the piston for ensuring that the spring plate 6 can generate certain compression displacement;
as shown in fig. 3 and 4, the interface shear box system includes a soil shear box and a structural panel 16, the structural panel 16 is fixed on a base 17, the soil shear box is disposed on the structural panel 16, the soil shear box includes a rigid shear box 11 and a flexible shear box 12, wherein the flexible shear box 12 is formed by stacking a plurality of stacked rings, is placed below the rigid shear box 11, a soil 10 is disposed in the soil shear box, and a positioning pin 13 is disposed on the corner of the rigid shear box 11 and the flexible shear box 12 for fixedly mounting the soil 10, wherein a vertical pressure head 8 extends into the rigid shear box 11 from the top, a soil blocking hidden plate 14 is disposed between the stacked rings of the flexible shear box 12 contacting the structural panel 16, and a joint bearing 15 is disposed on the stacked rings at the contact surface in the shearing direction; the height of the rigid shearing box 11 is 30mm or 60mm, the lower flexible shearing box 12 consists of 25 square ring stacking frames, the height of each ring stacking frame is 2mm, the plane thickness is 10mm, the length of the soil body 10 is 100mm, the height adjustable range is 50-100 mm, the size of the structural panel 16 is 400 multiplied by 200 multiplied by 50mm, the structural panel is fixed on a vibration table through a base 17, and in order to facilitate installation and sample preparation, the positioning pins 13 are arranged on the peripheral corners of the shearing box, in order to reduce the test error caused by friction at each position, the contact surfaces are treated by Teflon adhesive tapes or Teflon sprays, in order to prevent the soil body 10 from losing in the vibration process, a soil retaining dark plate 14 is arranged in the middle of the lowermost laminated ring, the height of the dark retaining plate 14 is 1.8mm, when the ring stack is lifted, the dark retaining plate automatically falls and is used for retaining soil, and in order to facilitate the installation of the sensor, the ring stack at the contact surface is provided with a joint bearing 15; the middle point of the lower edge of the rigid shearing box 11 is marked with a coordinate zero point, the middle position of each superposed ring of the flexible shearing box 12 is marked with a black line as a reference line 23, a red point is marked on the reference line 23 as a reference point 24, a camera is installed in the direction vertical to the vibration direction of the soil shearing box, the relative position of the marked point is photographed and recorded in real time through the camera, and the displacement of each superposed ring and the relative displacement between the superposed rings can be obtained after the photograph is processed through an image analysis technology;
the electromagnetic vibration table comprises a table top 19 and a table body 20, wherein a base 17 is connected above the table top 19 through a mounting bolt 18, and the table body 20 fixedly connected with the corner bracket 4 for fixing the rigid body frame 1 is arranged below the table top 19; the electromagnetic type vibration table is LD-50PHP and is used for providing horizontal vibration force, the size of the table top is 500 multiplied by 500mm, sine waves, frequency modulation, frequency sweep, programmability, frequency multiplication, logarithm, amplitude, acceleration, exciting force, any time, fixed acceleration and fixed amplitude functions can be set, the frequency range is 0-600 Hz, the amplitude is taken as the main when the frequency is 0-80 Hz, the fixed acceleration is taken as the main when the frequency is more than 30Hz, the acceleration is 0-22 g, and the electromagnetic type vibration table displays a relative curve graph of the frequency, the amplitude and the acceleration along with the time through a connected computer system;
the data acquisition system comprises a feed-through load sensor 7, a rebound type LVDT vertical displacement sensor 21, a push-pull force sensor 25, a rebound type LVDT horizontal displacement sensor 28 and a handheld vibration measuring instrument, wherein the feed-through load sensor 7 is arranged at the contact position of a single-end stud 9 and a vertical pressure head 8 and is used for measuring the passing of a vertical load, the rebound type LVDT vertical displacement sensor 21 is arranged in a hollow hydraulic jack 5 and respectively penetrates through the hollow hydraulic jack 5, a spring plate 6 and the feed-through load sensor 7 from top to bottom, a probe of the displacement sensor 5 is vertically contacted with the vertical pressure head 8, the end part of the displacement sensor is fixed on a fixed rigid body frame 1 through a mounting frame 22, the push-pull force sensor 25 is fixed on a fixed angle bracket 4 through a mounting platform 26 and is connected with a joint bearing 15 on a laminated ring at the bottom of a flexible shearing box 12 through a measuring rod 27 arranged on the push-pull force, the stress measuring device is used for measuring the stress at the contact surface of the soil and the structure; the push-pull force sensor 25 is fixed on the fixed angle bracket 4 through a mounting platform 26, is connected with the joint bearing 15 on the bottom laminated ring of the flexible shearing box 12 through a measuring rod 27 and is used for measuring the stress at the contact surface of the soil and the structure; the rebound type LVDT horizontal displacement sensor 28 is fixed on the fixed angle bracket 4 through a universal magnetic gauge stand 29, a probe of the rebound type LVDT horizontal displacement sensor 28 is always vertical to the side surface of the structural panel 16 by utilizing the telescopic function of the probe, and is used for measuring the real horizontal displacement of the structural panel 16, the handheld type vibration measuring instrument is respectively arranged on the soil body 10, the contact surface or the structural panel and is used for detecting the displacement, the speed and the acceleration of the soil body, and the model of the handheld type vibration measuring instrument is LD-T1.
The vertical displacement sensor 21 adopts a rebound type vertical displacement sensor 21, the measuring range is +/-5 mm, and a front-end probe is in contact with the vertical pressure head 8 and is used for observing the vertical body deformation of the soil body 10; the vertical load sensor 7 is of a center-through type, has a measuring range of 500kg, and is matched with the displacement sensor 21 for placement.
Claims (6)
1. The utility model provides an interface vibration single shear test device for simulating power contact problem which characterized in that: the system comprises a fixed rigid body frame (1), a hydraulic loading system, an interface shear box system, an electromagnetic vibration table and a data acquisition system;
the fixed rigid body frame (1) is a square frame with front and back openings, the center of the top is provided with a threaded mounting hole and a round opening, and the bottom is symmetrically provided with two L-shaped fixed angle brackets (4);
the hydraulic loading system comprises a hollow hydraulic jack (5), a piston cylinder of the hollow hydraulic jack (5) is fixed on a fixed rigid body frame (1) through a screw rod (2) and a nut (3), a vertical pressure head (8) is arranged on a piston of the hollow hydraulic jack (5), a damping spring plate (6) is arranged between the vertical pressure head (8) and a piston of the hollow hydraulic jack (5), four through holes are formed in the damping spring plate (6), a single-head stud (9) is arranged in each through hole, one end of the single-head stud (9) is of a smooth structure, the other end of the single-head stud is of a threaded structure, one end of the smooth structure is connected with the piston of the hollow hydraulic jack (5), a smooth round hole is formed in the joint of the piston and the smooth structure of the single-head stud (9), one end of the threaded structure of the single-head stud (9) is connected with the vertical pressure head stud (8), and the top end of the single-, a certain distance is kept for ensuring that the spring plate (6) can generate certain compression displacement;
the interface shear box system comprises a soil body shear box and a structural panel (16), the structural panel (16) is fixed on a base (17), the soil body shear box is arranged on the structural panel (16) and comprises a rigid shear box (11) and a flexible shear box (12), wherein the flexible shearing box (12) is formed by overlapping a plurality of superposed rings and is arranged below the rigid shearing box (11), the soil body (10) is arranged in the soil body shearing box, positioning pins (13) are arranged on the corners of the rigid shearing box (11) and the flexible shearing box (12) to fixedly install the soil body (10), wherein the vertical pressure head (8) extends into the rigid shearing box (11) from the top, a soil retaining dark plate (14) is arranged between the superposed rings of the flexible shearing box (12) and the structural panel (16), and a joint bearing (15) is arranged on the superposed rings at the contact surface in the shearing direction;
the electromagnetic type vibration table comprises a table top (19) and a table body (20), wherein a base (17) is connected above the table top (19) through a mounting bolt (18), and the table body (20) fixedly connected with an angle bracket (4) for fixing a rigid body frame (1) is arranged below the table top (19);
the data acquisition system comprises a piercing load sensor (7), a rebound type LVDT vertical displacement sensor (21), a push-pull force sensor (25), a rebound type LVDT horizontal displacement sensor (28) and a handheld vibration measuring instrument, wherein the piercing load sensor (7) is arranged at the contact position of a single-end stud (9) and a vertical pressure head (8) and used for measuring the passing of a vertical load, the rebound type LVDT vertical displacement sensor (21) is arranged in a hollow hydraulic jack (5) and respectively penetrates through the hollow hydraulic jack (5), a spring plate (6) and the piercing load sensor (7) from top to bottom, a probe of the displacement sensor (21) is vertically contacted with the vertical pressure head (8), the end part of the displacement sensor is fixed on a fixed rigid body frame (1) through an installation frame (22), the push-pull force sensor (25) is fixed on a fixed angle bracket (4) through an installation platform (26), the measuring rod (27) arranged on the push-pull force sensor (25) is connected with the joint bearing (15) on the bottom laminated ring of the flexible shearing box (12) and is used for measuring the stress at the contact surface of the soil and the structure; the push-pull force sensor (25) is fixed on the fixed angle bracket (4) through a mounting platform (26), is connected with a joint bearing (15) on a bottom laminated ring of the flexible shearing box (12) through a measuring rod (27), and is used for measuring the stress at the contact surface of soil and a structure; the rebound type LVDT horizontal displacement sensor (28) is fixed on the fixed angle frame (4) through a universal magnetic gauge stand (29), a probe of the rebound type LVDT horizontal displacement sensor (28) is always perpendicular to the side face of the structural panel (16) by utilizing the telescopic function of the probe, the probe is used for measuring the real horizontal displacement of the structural panel (16), and the handheld vibration measuring instrument is respectively arranged on the soil body (10), the contact surface or the structural panel and is used for detecting the displacement, the speed and the acceleration of the handheld vibration measuring instrument.
2. The interface vibration single shear test apparatus for simulating a dynamic contact problem according to claim 1, wherein: the vertical displacement sensor (21) adopts a rebound vertical displacement sensor (21), the measuring range is +/-5 mm, and a front-end probe is in contact with the vertical pressure head (8) and is used for observing the vertical body deformation of the soil body (10); the vertical load sensor (7) is of a through type, the measuring range is 500kg, and the vertical load sensor is matched with a displacement sensor (21).
3. The interface vibration single shear test apparatus for simulating a dynamic contact problem according to claim 1, wherein: the height of a rigid shearing box (11) is 30mm or 60mm, a lower flexible shearing box (12) consists of 25 square ring stacking frames, the height of each ring stacking frame is 2mm, the plane thickness is 10mm, the length of a soil body (10) is 100mm, the height adjustable range is 50-100 mm, the size of a structural panel (16) is 400X200X50mm, the structural panel is fixed on a vibration table through a base (17), positioning pins (13) are arranged on the peripheral corners of the shearing box for facilitating installation and sample preparation, a soil retaining dark plate (14) is arranged in the middle of the lowest layer ring for reducing test errors caused by friction at each position, a Teflon adhesive tape or Teflon spray is adopted at each contact surface for processing, in order to prevent the soil body (10) from losing in the vibration process, the soil retaining dark plate (14) is arranged in the middle of the lowest layer ring stacking ring, wherein the height of the soil retaining dark plate (14) is 1.8mm, when the ring stacking rings are lifted, the dark plate automatically falls and, a joint bearing (15) is mounted on the stack ring at the contact surface.
4. The interface vibration single shear test apparatus for simulating a dynamic contact problem according to claim 1, wherein: the electromagnetic type vibration table is LD-50PHP and is used for providing horizontal vibration force, the table surface size is 500X500mm, sine waves, frequency modulation, frequency sweeping, programming, frequency doubling, logarithm, amplitude, acceleration, exciting force, any time, fixed acceleration and fixed amplitude functions can be set, the frequency range is 0-600 Hz, the amplitude is taken as the main when the frequency is 0-80 Hz, the fixed acceleration is taken as the main when the frequency is more than 30Hz, the acceleration is 0-22 g, and the electromagnetic type vibration table displays relative curve graphs of the frequency, the amplitude and the acceleration along with the time through a connected computer system.
5. The interface vibration single shear test apparatus for simulating a dynamic contact problem according to claim 1, wherein: the handheld vibratory meter is model LD-T1.
6. The interface vibration single shear test apparatus for simulating a dynamic contact problem according to claim 1, wherein: the middle point of the lower edge of the rigid shearing box (11) is marked with a coordinate zero point, the middle position of each stack ring of the flexible shearing box (12) is marked with a black line as a reference line (23), a red point is marked on the reference line (23) as a reference point (24), a camera is installed in the direction vertical to the vibration direction of the soil shearing box, the camera is used for photographing and recording the relative position of the marked point in real time, and the picture is processed by an image analysis technology to obtain the displacement of each stack ring and the relative displacement between the stack rings.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208114A (en) * | 2019-06-25 | 2019-09-06 | 中国矿业大学 | It is a kind of for simulating the interface dynamic simple shear test device and method of dynamic contact problem |
| CN112858043A (en) * | 2021-02-24 | 2021-05-28 | 同济大学 | Soil-structure contact surface shear test device capable of realizing bidirectional high-frequency vibration |
| CN114324010A (en) * | 2022-03-09 | 2022-04-12 | 西南交通大学 | Rock mass structural plane multidirectional dynamic shear mechanics testing system based on vibration table principle |
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2019
- 2019-06-25 CN CN201920963631.1U patent/CN210376010U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208114A (en) * | 2019-06-25 | 2019-09-06 | 中国矿业大学 | It is a kind of for simulating the interface dynamic simple shear test device and method of dynamic contact problem |
| CN110208114B (en) * | 2019-06-25 | 2024-02-27 | 中国矿业大学 | Interface vibration single shear test device and method for simulating power contact problem |
| CN112858043A (en) * | 2021-02-24 | 2021-05-28 | 同济大学 | Soil-structure contact surface shear test device capable of realizing bidirectional high-frequency vibration |
| CN114324010A (en) * | 2022-03-09 | 2022-04-12 | 西南交通大学 | Rock mass structural plane multidirectional dynamic shear mechanics testing system based on vibration table principle |
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