Wave making device in geotechnical centrifuge

Abstract

The wave making device comprises a bottom plate, an inner plate is arranged on one side of the top of the bottom plate, an outer plate is arranged on the other side of the top of the bottom plate, the inner plate and the outer plate are both of a curved surface structure, glass windows are arranged on the outer walls of one sides of the inner plate and the outer plate, and a test soil body is fixedly arranged on the upper surface of the bottom plate. A mounting plate is fixedly mounted at the top of the front end of the bottom plate, an actuator is fixedly arranged on one side of the mounting plate, and an output shaft of the actuator is connected with a wave making plate located on the other side of the mounting plate. According to the utility model, the wave-making model box body with the C-shaped structure is designed, so that the length of the wave-making model box body can be prolonged in a limited space of a hanging basket of a centrifugal machine, and enough space is provided for dissipating wave energy; the wave absorbing plate and the porous wave absorbing material arranged at the tail end of the wave making device absorb residual wave energy, and reflected waves are prevented from appearing. The porous wave-absorbing materials on the two side walls of the wave-absorbing section can further absorb wave energy in the wave-absorbing section.

Description

Technical Field

[0001] This utility model relates to the field of wave generation technology, specifically to a wave generation device in a geotextile centrifuge. Background Technology

[0002] A geotechnical centrifuge is a testing device used for physical simulation experiments in geotechnical engineering. Its basic principle is to generate centrifugal acceleration by rotating the centrifuge arm, providing an artificial high gravity field. A model of a certain scale is built on the subject of study. By increasing the stress of the soil's self-weight through centrifugal acceleration, the prototype and the model achieve equal stress and strain and similar deformation, thus simulating the prototype in a test.

[0003] Wave generation simulation is required in geotextile centrifuges, but for boom-type geotextile centrifuges, the existing wave generators are too short due to limited basket space. A sufficient length is needed for wave generation, stabilization, and suppression. Due to length limitations, wave generators in centrifuges struggle to effectively suppress waves. Wave reflection also affects the accuracy of the research. Therefore, there is an urgent need to design a wave generation device for geotextile centrifuges to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a wave-generating device for a geotextile centrifuge, in order to solve the problem in the prior art where the wave generator is too short due to the size limitation of the centrifuge basket, which affects the wave-damping effect and makes it impossible to accurately simulate waves.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A wave-generating device in a geotextile centrifuge includes a base plate, an inner plate on one side of the top of the base plate, and an outer plate on the other side of the top of the base plate. Both the inner and outer plates are curved structures. A glass window is provided on one outer wall of both the inner and outer plates. Test soil is fixedly placed on the upper surface of the base plate. An installation plate is fixedly installed on the top front end of the base plate, and an actuator is fixedly installed on one side of the installation plate. The output shaft of the actuator is connected to a wave-generating plate located on the other side of the installation plate.

[0007] Both the inner and outer plates are provided with wave-damping plates. End plates are fixedly installed at the rear ends of the inner and outer plates, and wave-damping plates are provided on the inner side of the end plates. A flow-blocking plate is provided on the outer surface of the wave-damping plates.

[0008] Preferably, the front of the inner and outer panels is a straight structure, and the rear of the inner and outer panels is an arc-shaped structure.

[0009] Preferably, a structural model is fixedly installed on top of the test soil.

[0010] Preferably, a pad is provided at one end of the test soil, and the pad is located below the wave-making plate.

[0011] Preferably, the wave-generating device is installed inside the centrifuge basket.

[0012] Preferably, the base plate, inner plate, outer plate, mounting plate and end plate together form the wave-generating model box, and the wave-generating model box has a C-shaped structure.

[0013] In the above technical solution, the wave-generating device in a geotextile centrifuge provided by this utility model has the following beneficial effects:

[0014] The C-shaped wave-generating model box, composed of a base plate, inner plate, outer plate, mounting plate, and end plate, allows for extended length within the limited space of the centrifuge basket, providing ample space for wave energy dissipation. Wave-absorbing plates and porous wave-absorbing materials at the tail end of the wave-generating device—namely, wave-absorbing plate one, flow-blocking plate, and wave-absorbing plate two—absorb residual wave energy, preventing reflected waves. The porous wave-absorbing materials on the side walls of the wave-absorbing section further absorb wave energy within that section. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the wave-generating device structure provided in an embodiment of the wave-generating device in a geotextile centrifuge according to the present invention.

[0017] Figure 2 This is a cross-sectional view of the wave-generating device structure provided in an embodiment of the wave-generating device in a geotextile centrifuge according to the present invention.

[0018] Figure 3 This is an exploded view of the wave-generating device structure provided in an embodiment of a geotextile centrifuge according to the present invention.

[0019] Figure 4 This invention provides an embodiment of a wave-generating device in a geotextile centrifuge. Figure 3 Enlarged view of a portion of the structure.

[0020] Figure 5 This is a schematic diagram of the installation structure of the wave-generating device inside the centrifuge basket, as provided in an embodiment of the wave-generating device in a geotextile centrifuge according to this utility model.

[0021] 1. Base plate; 2. Inner plate; 3. Outer plate; 4. Glass window; 5. Structural model; 6. Wave-generating plate; 7. Actuator; 8. Pad block; 9. Test soil; 10. Mounting plate; 11. Wave-damping plate one; 12. Flow-blocking plate; 13. Wave-damping plate two; 14. End plate; 15. Centrifuge basket. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-5 As shown in the figure, the wave-generating device in a geotextile centrifuge provided by this utility model includes a base plate 1, an inner plate 2 is provided on one side of the top of the base plate 1, and an outer plate 3 is provided on the other side of the top of the base plate 1. Both the inner plate 2 and the outer plate 3 are curved structures. A glass window 4 is provided on one side of the outer wall of the inner plate 2 and the outer plate 3. The test soil 9 is fixedly provided on the upper surface of the base plate 1. An installation plate 10 is fixedly installed on the top of the front end of the base plate 1, and an actuator 7 is fixedly provided on one side of the installation plate 10. The output shaft of the actuator 7 is connected to a wave-generating plate 6 located on the other side of the installation plate 10. Wave-damping plates 11 are provided on the rear side walls of the inner plate 2 and the outer plate 3. An end plate 14 is fixedly installed on the rear end of the inner plate 2 and the outer plate 3, and a wave-damping plate 13 is provided on the inner side of the end plate 14. A flow-blocking plate 12 is provided on the outer surface of the wave-damping plate 13.

[0024] In this embodiment, a base plate 1 is included, an inner plate 2 is provided on one side of the top of the base plate 1, and an outer plate 3 is provided on the other side of the top of the base plate 1; the front of the inner plate 2 and the outer plate 3 are straight structures, and the rear of the inner plate 2 and the outer plate 3 are arc-shaped structures.

[0025] In this embodiment, both the inner plate 2 and the outer plate 3 are curved structures. A glass window 4 is provided on one side of the outer wall of both the inner plate 2 and the outer plate 3. The test soil 9 is fixedly installed on the upper surface of the bottom plate 1. A structural model 5 is fixedly installed on the top of the test soil 9.

[0026] In this embodiment, a mounting plate 10 is fixedly installed on the top front end of the base plate 1, and an actuator 7 is fixedly installed on one side of the mounting plate 10. The actuator 7 can be a hydraulic cylinder or a pneumatic cylinder. The output shaft of the actuator 7 is connected to a wave-making plate 6 located on the other side of the mounting plate 10. A pad 8 is provided at one end of the test soil 9. The pad 8 is located below the wave-making plate 6. The actuator 7 is used to drive the wave-making plate 6 to move and generate waves.

[0027] In this embodiment, wave-damping plates 11 are provided on the rear sidewalls of both the inner plate 2 and the outer plate 3. Wave-damping plates 11 on the inner plate 2 and the outer plate 3 are used to achieve wave damming. End plates 14 are fixedly installed at the rear ends of the inner plate 2 and the outer plate 3, and wave-damping plates 13 are provided on the inner side of the end plates 14. A flow-blocking plate 12 is provided on the outer surface of the wave-damping plate 13. The surface of the flow-blocking plate 12 is provided with loosely spaced through holes, so that water impacts the flow-blocking plate 12 and can flow through the flow-blocking plate 12. Wave-damping plates 13 behind the flow-blocking plate 12 are used to achieve wave damming and reduce wave energy.

[0028] In this embodiment, the wave-generating device is installed inside the centrifuge basket 15. The bottom plate 1, inner plate 2, outer plate 3, mounting plate 10 and end plate 14 together form the wave-generating model box. The wave-generating model box has a C-shaped structure, which can extend the length of the wave-generating model box within the limited space of the centrifuge basket, and has enough space for the dissipation of wave energy.

[0029] The wave-making model box is fixed inside the centrifuge basket 15. Water is added to the wave-making model box, and the centrifuge is run to the specified acceleration value. The actuator 7 drives the wave-making plate 6 to move, and the wave-making plate 6 pushes the water in the wave-making model box to generate waves.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wave generator in a geotechnical centrifuge comprising a floor (1), characterised in that, The top side of the bottom plate (1) is provided with an inner plate (2), and the other side of the top of the bottom plate (1) is provided with an outer plate (3), the inner plate (2) and the outer plate (3) are both curved surface structures, the side outer walls of the inner plate (2) and the outer plate (3) are both provided with glass windows (4), the upper surface of the bottom plate (1) is fixedly provided with a test soil body (9), the top of the front end of the bottom plate (1) is fixedly installed with a mounting plate (10), and the side of the mounting plate (10) is fixedly provided with an actuator (7), and the output shaft of the actuator (7) is connected with a wave board (6) located on the other side of the mounting plate (10). The rear end side walls of the inner plate (2) and the outer plate (3) are both provided with a wave absorbing plate one (11), the rear ends of the inner plate (2) and the outer plate (3) are fixedly installed with an end plate (14), and the inner side of the end plate (14) is provided with a wave absorbing plate two (13), and the outer surface of the wave absorbing plate two (13) is provided with a flow resistance plate (12).

2. A wave generator in a geotechnical centrifuge according to claim 1, wherein, The front part of the inner plate (2) and the outer plate (3) is a straight line structure, and the rear part of the inner plate (2) and the outer plate (3) is an arc structure.

3. A wave generator in a geotechnical centrifuge according to claim 1, wherein The top of the test soil body (9) is fixedly installed with a structural model (5).

4. A wave generator in a geotechnical centrifuge according to claim 1, wherein One end of the test soil body (9) is provided with a cushion block (8), and the cushion block (8) is located below the wave board (6).

5. A wave generator in a geotechnical centrifuge according to claim 1, wherein The wave making device is installed in the inside of the centrifuge basket (15).

6. A wave generator in a geotechnical centrifuge according to claim 1, wherein The bottom plate (1), the inner plate (2), the outer plate (3), the mounting plate (10) and the end plate (14) jointly constitute a wave making model box, and the wave making model box is a C-shaped structure.

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