Underwater vibration table test device and method

Abstract

The invention provides an underwater vibration table test device and method, and the device comprises a simulation box which comprises a box body which extends in a first direction and is used for loading water to simulate an underwater environment and providing a carrying table for a first slope at the bottom of the box body; the wave device is arranged in the simulation box and used for generating waves in the first direction; the wave current device is arranged in the simulation box and is used for generating wave current along a first direction; the at least two mounting grooves are formed in the bottom of the simulation box side by side in the first direction and / or the second direction; the vibration device at least comprises a table top, the table top is embedded into the mounting groove, a carrying table is provided for the second side slope, and the vibration device provides vibration in one or more directions of the first direction, the second direction and the third direction for the interior of the box body; wherein the first direction and the second direction are perpendicular to the plane where the table top is located, and the plane where the third direction is located is perpendicular to the table top. The response of the second slope under the action of coupled earthquakes, waves and wave flows can be simulated.

Description

Technical Field

[0001] This application relates to the technical field of geological disaster model tests, and particularly to an underwater shaking table test device and method. Background Art

[0002] Underwater vibration technology is a test device used to simulate the effects of earthquakes and other dynamic loads on structures or facilities in an underwater environment. It is usually used in ocean engineering, ship engineering, and the study of the seismic resistance and stability of underwater structures. Underwater vibration provides controllable vibration or impact force to help researchers understand the response, failure mechanism, and seismic performance of structures in a complex underwater environment.

[0003] The vibration technology in related technologies is mainly used to simulate the situations of on-road earthquakes and cyclic dynamic loads, and there are relatively few shaking tables dedicated to the underwater environment. In addition, although the related vibration technology can simulate earthquakes to a certain extent, for the complex underwater environment which is not limited to earthquakes, in order to more accurately evaluate and predict the performance of ocean engineering structures under extreme conditions, a seismic simulation shaking table test device capable of comprehensively simulating the complex underwater environment is needed. Summary of the Invention

[0004] In view of this, the purpose of this application is to propose an underwater shaking table test device and method that overcome the above problems or at least partially solve the above problems.

[0005] Based on the above purpose, in the first aspect of this application, an underwater shaking table test device is provided, including:

[0006] A simulation tank, including a tank body that extends in a first direction, is used to load water to simulate the underwater environment, and the bottom of the tank body provides a mounting platform for a first slope;

[0007] A wave device, arranged in the simulation tank, is used to generate waves along the first direction;

[0008] A wave current device, arranged in the simulation tank, is used to generate wave currents along the first direction;

[0009] Mounting grooves, including at least two, are arranged side by side at the bottom of the simulation tank along the first direction and / or a second direction;

[0010] A vibration device, at least including a tabletop, the tabletop is respectively embedded in the mounting grooves, provides a mounting platform for a second slope, and the vibration device respectively provides vibration in one or more directions of the first direction, the second direction, and the third direction inside the tank body; wherein, the first direction and the second direction are perpendicular to the plane where the tabletop is located, and the plane where the third direction is located is perpendicular to the tabletop.

[0011] Optionally, it further includes:

[0012] A rainfall device, which includes a rigid truss, a water supply pipe interface, and atomizing nozzles; the rigid truss is arranged on the side of the simulation box opposite to the wave-current device; the atomizing nozzles are arranged on the rigid truss, and the orthographic projection of the installation groove on the bottom of the simulation box is within the orthographic projection range of the atomizing nozzles on the bottom of the simulation box; the atomizing nozzles are connected to the water supply pipe interface.

[0013] Optionally, the vibration device further includes:

[0014] A base;

[0015] A first vibrator, fixedly arranged on the side of the base facing the tabletop, and the first vibrator vibrates along the third direction. One end of the first vibrator away from the base is fixedly connected to a first vibrating table.

[0016] A second vibrator, fixedly arranged on the side of the first vibrating table away from the base. Second vibrating tables are arranged in parallel along the first direction. The second vibrator and the second vibrating tables are fixedly connected. Wherein, on the side of the first vibrating table away from the base, there is a first slide rail extending in the first direction, and the second vibrating tables are slidably connected to the first slide rail; the second vibrator vibrates along the first direction;

[0017] A third vibrator, fixedly arranged on the side of the second vibrating table away from the base. Third vibrating tables are arranged in parallel along the second direction. The third vibrator and the second vibrating tables are fixedly connected. Wherein, on the side of the second vibrating table away from the base, there is a second slide rail extending in the second direction, and the third vibrating tables are slidably connected to the second slide rail; the third vibrator vibrates along the second direction;

[0018] A connecting column, fixedly arranged on the side of the third vibrating table away from the base, and the tabletop is fixedly arranged on the side of the connecting column away from the third vibrating table.

[0019] Optionally, the wave device includes: a wave-pushing plate, a wave-pushing track, and a mounting frame;

[0020] The mounting frame is installed on the top of one end of the simulation box along the first direction. The extending direction of the wave-pushing track is fixedly arranged on the mounting frame along the first direction. The wave-pushing plate is slidably connected to the wave-pushing track; wherein the plane where the wave-pushing plate is located is perpendicular to the plane where the first direction is located, and the plane where the wave-pushing plate is located is within the box body of the simulation box;

[0021] On the side of the box body of the simulation box opposite to the wave-pushing plate, there is a wave-damping structure.

[0022] Optionally, the distance between the tabletop and the wave-pushing plate in the first direction is not less than a first distance; wherein the wave-pushing plate is configured with a minimum moving speed in the first direction, and the first distance is configured to be four times the wavelength of the wave formed at the minimum moving speed.

[0023] Optionally, the wave-current device includes: a flow-making pipe and a flow-making motor;

[0024] The flow-making pipe includes a water inlet and a water outlet. Both the water inlet and the water outlet penetrate through the simulation box and extend into the interior of the box body. Moreover, the water inlet and the water outlet are at least respectively located at two ends of the installation groove in the first direction, and the water inlet is close to the side of the wave-current device; the flow-making motor is connected to the flow-making pipe.

[0025] Optionally, at the edges of the first slope and the second slope, there are retaining walls extending in the third direction, wherein the retaining walls are detachably arranged.

[0026] Optionally, a sealing material is detachably connected between the edge of the tabletop facing the installation groove and the edge of the installation groove.

[0027] Optionally, it further includes a water storage tank. The water storage tank is arranged in parallel with the simulation box. The water storage tank is connected with a water supply pipe, and the end of the water supply pipe far from the water storage tank extends into the interior of the box body of the simulation box. A water supply motor is arranged on the water supply pipe;

[0028] A drain port is arranged at one end of the flow-making pipe close to the water outlet, and a drain valve is connected at the drain port.

[0029] In the second aspect of the present application, there is provided an underwater shaking table test method, using the underwater shaking table test device as described in the first aspect, including:

[0030] Using the tabletop of the vibration device to be respectively embedded in the at least two installation grooves, and forming a second slope on the tabletop; the surface of the tabletop facing the interior of the box body is higher than the bottom of the box body;

[0031] Using the wave-current device to generate waves propagating in the first direction;

[0032] And / or using the wave-current device to generate a wave current propagating in the first direction;

[0033] And / or using the vibration device to generate vibrations in one or more of the first direction, the second direction, and the third direction, and determining the response of the first slope under the action of simulated earthquake and / or waves and / or wave current;

[0034] Or the tabletop of the vibration device is respectively embedded in the at least two installation grooves, and a second slope is formed at the bottom of the simulation box;

[0035] Generate waves propagating along the first direction by using the wave current device;

[0036] And / or generate a wave current along the first direction by using the wave current device;

[0037] And / or generate vibrations in one or more of the first direction, the second direction, and the third direction by using the vibration device to determine the response of the first slope under seismic action.

[0038] As can be seen from the above, an underwater shaking table test device and method provided by the present application simulate waves and wave currents along the first direction through a wave current device and a wave current device respectively, and provide vibrations along the first direction, the second direction, and the third direction to the inside of the simulation box through the vibration device to simulate an earthquake. According to the actual situation, the response of the second slope located on the tabletop under the coupling of earthquake, waves, and wave currents, or the response of the second slope located on the tabletop under any one of earthquake, waves, or wave currents can be coupled; or the response of the first slope located at the bottom of the simulation box body under the coupling of earthquake, waves, and wave currents, or the response of the first slope located at the bottom of the simulation box body under earthquake action, provides comprehensive support for studying underwater complex natural disaster environments and provides different simulations according to different disaster situations. At the same time, the modular design of the water storage tank, the simulation box, and the vibration device is convenient for quick disassembly and installation, improving the test efficiency. The vibration devices corresponding to at least two installation grooves improve the loading capacity of multi-direction, multi-degree-of-freedom, and multi-point coupling at different positions under earthquake simulation, and more realistically simulate the distributed load and conform to the disaster effect in a complex environment. The wave current device and the wave current device generate waves and wave currents respectively, avoiding mutual influence. The first slope and the second slope can be detachably and flexibly provided with retaining walls according to different test requirements, supporting various boundary condition configurations from fully open to four-sided closed for the first slope and the second slope, and being able to adapt to the test requirements of single-field (such as earthquake) and multi-field (such as the coupling of earthquake, waves, and wave currents).

[0039] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features, and advantages of the present invention more obvious and understandable, the following specifically illustrates the embodiments of the present invention. Brief Description of the Drawings

[0040] To more clearly illustrate the technical solutions in the present application or related technologies, the following will briefly introduce the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings in the following descriptions are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 Schematic diagram of an underwater shaking table test device according to an embodiment of the present application;

[0042] Figure 2 Side view of the vibration device according to an embodiment of the present application;

[0043] Figure 3 Top view of the vibration device according to an embodiment of the present application;

[0044] Figure 4a Schematic diagram of a first slope or a second slope with four-sided solid walls according to an embodiment of the present application;

[0045] Figure 4b Schematic diagram of a first slope or a second slope with three-sided solid walls according to an embodiment of the present application;

[0046] Figure 4c Schematic diagram of a first slope or a second slope without solid walls according to an embodiment of the present application;

[0047] Figure 5a Flowchart of a method for an underwater shaking table test according to an embodiment of the present application;

[0048] Figure 5b Flowchart of another method for an underwater shaking table test according to an embodiment of the present application.

[0049] Illustration: Simulation box 1, installation groove 11, connecting column 20, tabletop 21, base 22, first vibrator 23, first shaking table 24, second vibrator 25, second shaking table 26, first slide rail 27, third vibrator 28, third shaking table 29, second slide rail 30, wave-pushing plate 31, wave-pushing track 32, mounting bracket 33, flow generating pipe 41, flow generating motor 42, water inlet 43, water outlet 44, drain port 45, drain valve 46, first slope 51, second slope 52, solid wall 53, water storage tank 61, water supply pipe 62, water supply motor 63, rigid truss 71, atomizing nozzle 72, water source interface 73. Detailed implementation manners

[0050] To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the following further elaborates on the present application in detail with reference to specific embodiments and the accompanying drawings.

[0051] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of this application should have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The "first", "second" and similar terms used in the embodiments of this application do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0052] As described in the above background art, for complex underwater environments, it is not limited to earthquakes. In the absence of earthquakes, there are waves in the underwater environment, and the causes of the waves are the effects of tides, wind forces, etc. In addition, there are wave currents in the underwater environment, that is, there are corresponding water flow velocities in different underwater environments. At the same time, in the case of earthquakes, the coupling of waves, wave currents and seismic activities. Synthesizing and simulating the coupling of underwater environments and seismic activities and the responses of different slopes is helpful for subsequent construction of ocean engineering structures and the performance of ocean engineering structures under extreme conditions.

[0053] Based on this, referring to Figures 1 to 4c As shown, the embodiments of this application provide an underwater shaking table test device, including: a simulation tank 1, including a tank body that extends in the first direction X direction, for loading water to simulate the underwater environment and providing a mounting platform for the first slope 51 at the bottom of the tank body; a wave device, arranged in the simulation tank 1, for generating waves along the first direction X; a wave current device, arranged in the simulation tank 1, for generating wave currents along the first direction X; mounting grooves 11, including at least two, arranged side by side at the bottom of the simulation tank 1 along the first direction X and / or the second direction Y; a vibration device, at least including a tabletop 21, the tabletop 21 is respectively embedded in the mounting grooves 11, providing a mounting platform for the second slope 52, and the vibration device respectively provides vibrations in one or more directions of the first direction X, the second direction Y and the third direction Z inside the tank body; wherein, the first direction X and the second direction Y are perpendicular to the plane where the tabletop 21 is located, and the plane where the third direction Z is located is perpendicular to the plane where the tabletop 21 is located.

[0054] In the embodiment of the present application, the water is loaded in the box body of the simulation box 1 to simulate the test environment. The wave device and the wave-current device are respectively used to generate waves and wave-currents in the first direction X. The wave-current is used to simulate the water flow velocity. At the same time, the vibration device vibrates in one or more directions among the first direction X, the second direction Y, and the third direction Z to simulate an earthquake, so as to realize the coupling of waves, wave-currents, and earthquakes, and further realize the coupling simulation of the underwater complex environment and seismic activities. Further, the carrying platform of the second slope 52 provided by the tabletop 21 is utilized, and the change of the second slope 52 under the underwater complex seismic environment is determined through the response of the second slope 52 under the coupling simulation.

[0055] Further, the installation grooves 11 arranged in parallel along the first direction X and / or the second direction Y, and each installation groove 11 corresponds to the tabletop 21 of the vibration device. Different directions of vibration and accelerations of the earthquake are simulated by the vibration devices in different installation grooves 11 to realize the simulation of the actual earthquake propagation process. Exemplarily, in an actual earthquake, in the direction away from the earthquake source, the vibration acceleration generated by the earthquake gradually weakens. When the earthquake propagation direction is consistent with the directions of the wave-current and the waves, the corresponding vibration devices in the two installation grooves 11 arranged in parallel along the first direction X are used to simulate the response of the second slope 52 at different distances from the earthquake source with different vibration accelerations, that is, the corresponding change of the second slope 52. When the earthquake propagation direction is inconsistent with the directions of the wave-current and the waves, the corresponding vibration devices in the two installation grooves 11 arranged in parallel along the second direction Y are used to simulate the response of the second slope 52 at different distances from the earthquake source with different vibration accelerations. At the same time, different directions of vibration can be respectively formed by the vibration devices corresponding to at least two installation grooves 11 to realize the multi-degree-of-freedom, multi-direction, and multi-point coupling loading ability of the earthquake, and more realistically simulate the distributed load and the compliance disaster effect in the complex environment.

[0056] Furthermore, the separate designs of the wave device, the wave-current device, and the vibration device can respectively simulate the influence on the second slope 52 on the tabletop 21 under the coupling of one or more conditions among waves, wave-currents, and earthquakes, providing comprehensive support for the study of complex natural disasters.

[0057] In addition, the bottom of the box body provides a carrying platform for the first slope 51. That is, when the earthquake location is far from the first slope 51, the influence on the first slope 51 at the bottom of the box body under the coupling of one or more conditions among waves, wave-currents, and earthquakes can also be simulated by the wave device, the wave-current device, and the vibration device, further providing comprehensive support for the study of complex natural disasters.

[0058] It can be understood that when no water is added to the simulation box 1, the vibration device and the installation groove 11 cooperate, and it can also be used to simulate the shaking table for land earthquakes.

[0059] In some embodiments, refer toFigure 1 As shown, the underwater shaking table test device further includes: a rainfall device, which includes a rigid truss 71, a water source interface 73, and atomizing nozzles 72; the rigid truss 71 is arranged on the side of the simulation box 1 opposite to the wave-current device; the atomizing nozzles 72 are arranged on the rigid truss 71, and the orthographic projection of the installation groove 21 on the bottom of the simulation box 1 is within the orthographic projection range of the atomizing nozzles 72 on the bottom of the simulation box 1; the atomizing nozzles 72 are connected to the water source interface 73.

[0060] In this embodiment, rainfall is simulated through the rainfall device. While realizing the coupling of waves, wave currents, and earthquakes, rainfall coupling is further realized, that is, the coupling of wave currents, waves, earthquakes, and rainfall is realized, or the coupling of one or more conditions among wave currents, waves, earthquakes, and rainfall is realized. The change of the second slope 52 in the underwater complex seismic environment is determined through the response of the second slope 52 under the coupled simulation. Exemplarily, referring to Figures 4a - 4c As shown, when a part of the second slope 52 is underwater and a part is above water, in the underwater part of the second slope 52, one or more of the complex underwater wave, wave current, and seismic environments are simulated by using the wave device, wave-current device, and vibration device respectively. In the part of the second slope 52 above water, the rainfall device is used to simulate the rainfall environment. The coupling of one or more conditions among wave currents, waves, earthquakes, and rainfall is realized, and the change of the second slope 52 in the underwater complex seismic environment is determined through the response of the second slope 52 under the coupled simulation.

[0061] Similarly, for the first slope 51 mounted on the bottom of the box body, that is, when the earthquake location is far from the first slope 51, the influence of the coupling of one or more conditions among waves, wave currents, earthquakes, and rainfall on the first slope 51 at the bottom of the box body can also be simulated by using the wave device, wave-current device, vibration device, and rainfall device, further providing comprehensive support for the study of complex natural disasters.

[0062] It should be noted that the water source interface 73 can be connected to any water source, so that water is ejected from the atomizing nozzles 72 to realize simulated rainfall.

[0063] In some embodiments, referring to Figure 2 、 Figure 3As shown in the figure, the vibration device further includes: a base 22; a first vibrator 23 fixedly arranged on one side of the base 22 facing the tabletop 21, and the first vibrator 23 vibrates along the third direction Z. One end of the first vibrator 23 away from the base 22 is fixedly connected to a first vibrating table 24; a second vibrator 25 is fixedly arranged on one side of the first vibrating table 24 away from the base 22. Second vibrating tables 26 are arranged in parallel along the first direction X. The second vibrator 25 and the second vibrating tables 26 are fixedly connected. A slide rail extending in the first direction X is arranged on one side of the first vibrating table 24 away from the base 22. The second vibrating tables 26 are connected to the first slide rail 27; the second vibrator 25 vibrates along the first direction X; a third vibrator 28 is fixedly arranged on one side of the second vibrating table 26 away from the base 22. Third vibrating tables 29 are arranged in parallel along the second direction Y. The third vibrator 28 and the second vibrating tables 26 are fixedly connected. A second slide rail 30 extending in the second direction Y is arranged on one side of the second vibrating table 26 away from the base 22. The third vibrating tables 29 are slidably connected to the second slide rail 30; the third vibrator 28 vibrates along the second direction Y; a connecting column 20 is fixedly arranged on one side of the third vibrating table 29 away from the base 22. The tabletop 21 is fixedly arranged on one side of the connecting column 20 away from the third vibrating table 29.

[0064] In this embodiment, the first vibrator 23 reciprocates along the third direction Z to drive the fixedly connected first vibrating table 24 to reciprocate along the third direction Z. The second vibrator 25 reciprocates along the first direction X to drive the fixedly connected second vibrating tables 26 to reciprocate along the slide rail extending in the first direction X. The third vibrator 28 reciprocates along the second direction Y to drive the fixedly connected first vibrating table 24 to reciprocate along the slide rail extending in the second direction Y. Thus, the tabletop 21 is driven by the connecting column 20 to reciprocate along the first direction X, the second direction Y, and the third direction Z simultaneously or respectively. Through the stacked structure design, independent vibrations in three mutually perpendicular directions (the first direction X, the second direction Y, and the third direction Z) are realized, and a complex seismic environment can be simulated more realistically. The three mutually perpendicular directions cooperate with each other to realize vibrations with multiple degrees of freedom.

[0065] In addition, the vibration device of the embodiment of the present application has a compact structure, can realize independent vibrations in three mutually perpendicular directions, improves the accuracy and effectiveness of the test; the slide rail connection design ensures the relative independence between different vibrating tables and avoids vibration interference; the stable setting of the connecting column 20 and the tabletop 21 provides a reliable mounting platform for the second slope 52.

[0066] It can be understood that in the embodiments of the present application, reciprocating vibrations along the first direction X, the second direction Y, and the third direction Z can be achieved simultaneously by the first vibrator 23, the second vibrator 25, and the third vibrator 28, or reciprocating vibrations along one or more of the first direction X, the second direction Y, and the third direction Z can be achieved. Corresponding simulations are realized according to different seismic vibrations, and specific limitations are not made here.

[0067] The first vibrator 23, the second vibrator 25, and the third vibrator 28 can achieve vibrations with different frequencies and intensities respectively by adjusting the vibration rate.

[0068] In some exemplary embodiments, the first vibrator 23, the second vibrator 25, and the third vibrator 28 can be cylinders, electric cylinders, or motors with a telescopic function, as long as they can achieve vibrations along the first direction X, the second direction Y, and the third direction Z respectively, and specific limitations are not made here.

[0069] In some embodiments, referring to Figure 1 As shown, the wave device includes: a wave pushing plate 31, a wave pushing track 32, and a mounting frame 33; the mounting frame 33 is installed at the top of one end of the simulation box 1 along the first direction X, the extending direction of the wave pushing track 32 is fixedly arranged on the mounting frame 33 along the first direction X, and the wave pushing plate 31 is slidably connected to the wave pushing track 32; the plane where the wave pushing plate 31 is located is perpendicular to the plane where the first direction X is located, and the plane where the wave pushing plate 31 is located is inside the box body of the simulation box 1; a wave damping structure is provided on the side of the box body of the simulation box 1 opposite to the wave pushing plate 31.

[0070] In this embodiment, by using the fact that the plane where the wave pushing plate 31 is located is perpendicular to the plane where the first direction X is located, and pushing the wave pushing plate 31 along the extending direction of the wave pushing track 32, the water in the simulation box 1 forms waves due to the pushing of the wave pushing plate 31, simulating the waves in the underwater environment. The pushing speeds of the pushing plates are different, and the sizes of the formed waves, that is, the wavelengths of the waves, are different. The speed of pushing the wave pushing plate 31 can be reasonably set according to the size of the waves in the actual underwater environment so that the formed waves are the same as the waves in the actual underwater environment.

[0071] The wave pushing plate 31 forms waves along the first direction X to simulate the waves in the underwater environment. When the waves travel to the side of the simulation box 1 opposite to the wave pushing plate 31, the waves will be forced to rebound, which is opposite to the propagation direction of the waves generated by the wave device and affects the waves in the simulated underwater environment. By providing a wave damping structure on the side of the box body of the simulation box 1 opposite to the wave pushing plate 31, the waves are cancelled after the waves generated by the wave device contact the wave damping structure.

[0072] In some exemplary embodiments, the wave-dissipating structure may be such that the side of the box body of the simulation box 1 opposite to the wave-pushing plate 31 is wavy. Alternatively, the wave-dissipating structure may be such that the side of the box body of the simulation box 1 opposite to the wave-pushing plate 31 is made of water-absorbing resin. Or the wave-dissipating structure may be such that the side of the box body of the simulation box 1 opposite to the wave-pushing plate 31 is wavy and made of water-absorbing resin. No specific limitation is made here as long as it can satisfy that when the wave reaches the side of the box body of the simulation box 1 opposite to the wave-pushing plate 31, the generated wave can be eliminated.

[0073] In some alternative embodiments, a wave pusher is provided on the side of the wave-pushing plate 31 away from the installation groove 11, and the wave pusher is fixedly arranged on the mounting frame 33. Exemplarily, the wave pusher can also be a cylinder, an electric cylinder or a motor with a telescopic function, as long as it can realize pushing the wave-pushing plate 31 to form waves, and no specific limitation is made here. At the same time, the pushing speed of the wave pusher can be adjusted to form waves with different wavelengths and different intensities.

[0074] In some exemplary embodiments, the material of the wave-pushing plate 31 can be non-metallic materials with relatively high hardness such as polytetrafluoroethylene, polyvinyl chloride, polyurethane, etc., to prevent rusting due to chemical reactions when exposed to water and air. At the same time, its relatively high hardness is not prone to deformation during the process of forming waves, resulting in a reduction in the efficiency of forming waves or poor wave quality.

[0075] In some embodiments, the distance between the tabletop 21 and the wave-pushing plate 31 in the first direction X is not less than a first distance; the wave-pushing plate 31 is configured with a minimum moving speed in the first direction X, and the first distance is configured to be four times the wavelength of the wave formed under the minimum movement.

[0076] During the process of forming waves by pushing the pushing plate, the waves are not stable in the initial stage, and the formed waveform is not a regular waveform. The wave crest of the initial waveform is relatively high, and the formed waves are also not stable. Exemplarily, in the initial stage of forming waves, the amplitudes of the wave crest and wave trough of the waveform are relatively large, and the wavelength is relatively small. During the transmission process, the waveform gradually tends to be stable. In order to make the waves transmitted to the corresponding tabletop 21 at the position of the installation groove 11 in a stable state, so that the second slope 52 on the tabletop 21 simulates the actual waves in a stable underwater environment, by making the distance between the tabletop 21 and the wave-pushing plate 31 in the first direction X not less than the first distance, the waves formed by the wave-pushing plate 31 have been stable when reaching the tabletop 21.

[0077] Through the discovery of the wave transmission process in water in this application, it is found that when the formed wave is at the fifth wavelength, the waveform of the wave tends to be stable. For surface waves, during the formation process, different pushing speeds of the wave-pushing plate 31 result in different waveforms of the formed waves, that is, the wave crests and wavelengths of the formed waves are different. The faster the speed of pushing the wave-pushing plate 31, the smaller the wavelength of the wave and the larger the amplitude of the wave crest; on the contrary, the slower the speed of pushing the wave-pushing plate 31, the smaller the wavelength of the wave and the smaller the amplitude of the wave crest. In order to be able to simulate waves in different environments, in the embodiment of this application, the first distance is configured to be four times the wavelength of the wave formed at the minimum movement speed of the wave-pushing plate 31. The wavelength of the wave formed at the minimum movement speed of the wave-pushing plate 31 is the largest, and the wave tends to be stable when it reaches the position of the tabletop 21. Then, when the pushing speed of the pushing plate is greater than the minimum movement speed, the wave reaching the position of the tabletop 21 is also a stable wave.

[0078] In some embodiments, referring to Figure 1 as shown, the wave current device includes: a flow-making pipe 41 and a flow-making motor 42; the flow-making pipe 41 includes a water inlet 43 and a water outlet 44, both the water inlet 43 and the water outlet 44 penetrate through the simulation box 1 and extend to the inside of the box body, and the water inlet 43 and the water outlet 44 are at least respectively located at both ends of the installation groove 11 along the first direction X, and the water inlet 43 is close to the side of the wave current device, and the flow-making motor 42 is connected to the flow-making pipe 41.

[0079] In order to make the simulation box 1 load water to simulate the underwater environment, and at the same time make the water in this underwater environment more in line with natural laws and have a certain flow rate. In this embodiment, a cycle is formed by the flow-making pipe 41 and the flow-making motor 42 with the simulation box 1. Using the power of the flow-making motor 42, the water in the simulation tank flows out from the water outlet 44 and flows in from the water inlet 43. During the cycle process, a wave current is formed in the water in the simulation box 1, that is, the water has a certain flow rate.

[0080] In this embodiment, the flow-making motor 42 can change the power according to the size of the wave current required for simulation, that is, the size of the flow rate of the water. The greater the power, the greater the wave current of the water, and the smaller the power, the smaller the wave current of the water.

[0081] In some embodiments, referring to Figure 4a 、 Figure 4b 、 Figure 4c as shown, a solid wall 53 extending along the third direction Z is provided at the edges of the first slope 51 and the second slope 52, and the solid wall 53 is detachably provided.

[0082] In this embodiment, the dynamic response of slopes under complex geological conditions is simulated by mounting the first slope 51 and the second slope 52 on the tabletop 21 and the bottom surface of the box body of the simulation box 1 respectively. Further, in order to achieve the dynamic response of slopes under complex geological conditions under different boundary conditions, the fixed wall 53 can be set according to requirements through the detachable design of the fixed wall 53. For example, in the case where the fixed walls 53 around the second slope 52 are closed, the simulation can focus on the action of seismic loads, excluding the interference of waves and wave currents, and is also applicable to single-scene tests of seismic actions in underwater environments. When the fixed wall 53 is set to be partially open or fully open, the influence of waves and wave currents can be coupled to achieve multi-scene coupled simulation and improve the applicable range of the experiment.

[0083] For example, as Figure 4b shown in the second slope 52, there is no fixed wall 53 on the side facing the flow pusher plate, and there are fixed walls 53 extending along the third direction Z on the remaining three sides. By coupling wave currents, waves, and earthquakes for simulation, and observing the dynamic response of the second slope 52, that is, the changes of the second slope 52 under the coupling of wave currents, waves, and earthquakes. It can be understood that if the second slope 52 does not change significantly under the coupling of wave currents, waves, and earthquakes, it means that the fixed wall 53 on the side facing the flow pusher plate does not have an impact under the boundary conditions. Similarly, one or more fixed walls 53 in different directions can be disassembled in turn to judge the dynamic response of the second slope 52 under one or more conditions of wave currents, waves, and earthquakes. By clarifying the dynamic response of the second slope 52, it provides a basis for the construction of ocean engineering structures and prevents damage caused by corresponding natural disasters.

[0084] In some embodiments, a sealing material is detachably connected between the edge of the tabletop 21 facing the installation groove 11 and the edge of the installation groove 11.

[0085] In the embodiment of the present application, the underwater environment is simulated by loading water into the simulation box 1. Further, the tabletop 21 of the vibration device is embedded in the installation groove 11 of the simulation box 1, and the vibration of the vibration device is used to simulate an earthquake. During the process of the tabletop 21 of the vibration table vibrating in the installation groove 11 to simulate an earthquake, it is also necessary to prevent the water in the simulation box 1 from flowing out. Through the sealing of the sealing material, when the tabletop 21 is embedded in the installation groove 11 to simulate multi-degree-of-freedom earthquakes, the water in the simulation box 1 is prevented from flowing out of the simulation box 1 to ensure that the underwater environment can be effectively simulated inside the simulation box 1. Through the detachable connection of the sealing material, the separation of the simulation box 1 and the vibration device and the replacement of the sealing material can be realized, further realizing the modular design of the simulation box 1 and the vibration device.

[0086] It should be noted that after the sealing material seals between the installation groove 11 and the tabletop 21, it does not affect the vibration of the tabletop 21 of the vibration device in the installation groove 11 to simulate an earthquake.

[0087] In some exemplary embodiments, the sealing material may be a waterproof cloth.

[0088] In some embodiments, a water storage tank 61 is further included. The water storage tank 61 is arranged in parallel with the simulation tank 1. A water supply pipe 62 is connected to the water storage tank 61, and one end of the water supply pipe 62 away from the water storage tank 61 extends into the interior of the simulation tank 1. A water supply motor 63 is provided on the water supply pipe 62.

[0089] With the arrangement of the water storage tank 61, when it is necessary to simulate an underwater environment in the simulation tank 1 for corresponding tests, the water supply motor 63 injects water into the simulation tank 1 through the water supply pipe 62, and different amounts of water are injected according to different underwater environment simulations.

[0090] In addition, a modular design is adopted between the water storage tank 61 and the simulation tank 1, which is convenient for quick disassembly and installation, meets different test requirements, and improves test efficiency.

[0091] In some embodiments, drainage ports 45 are provided at one ends of the flow generating pipes 41 close to the water outlet 44, and drainage valves are connected to the drainage ports 45.

[0092] After the corresponding underwater environment simulation test is completed in the simulation tank 1, the drainage valve is opened, and the water in the simulation tank 1 flows out through the water outlet 44 from the drainage port 45.

[0093] In some alternative embodiments, after the water in the simulation tank 1 is drained, the simulation tank 1 and the vibration device can also be used to simulate a land earthquake.

[0094] Based on the same inventive concept, as shown in Figure 5a This application provides a seismic simulation shaking table test method, using the underwater shaking table test device described in any of the above embodiments, including:

[0095] S501. The tabletop 21 of the vibration device is respectively embedded in at least two installation grooves 11, and a second slope 52 is formed on the tabletop 21, and the surface of the tabletop 21 facing the interior of the celestial body is higher than the bottom of the box body;

[0096] S502. Use the wave device to generate waves propagating along the first direction X;

[0097] S503. And / or use the wave current device to generate a wave current along the first direction X;

[0098] S504. And / or use the vibration device to generate vibrations along one or more of the first direction X, the second direction Y, and the third direction Z, and determine the response of the first slope 51 under the action of simulated earthquake and / or waves and / or wave current;

[0099] In this embodiment, the water is loaded in the box body of the simulation box 1 to simulate the test environment. The wave device and the wave-current device are respectively used to generate waves and wave-currents in the first direction X. The wave-current is used to simulate the water flow velocity. At the same time, the vibration device vibrates in one or more directions among the first direction X, the second direction Y, and the third direction Z to simulate an earthquake, so as to realize the coupling of waves, wave-currents, and earthquakes, and to realize the coupled simulation of the underwater complex environment and seismic activities. Further, by using the carrying platform of the second slope 52 provided by the tabletop 21, the change of the second slope 52 under the underwater complex seismic environment is determined through the response of the second slope 52 under the coupled simulation.

[0100] Further, the installation grooves 11 arranged in parallel along the first direction X and / or the second direction Y, and each installation groove 11 corresponds to the tabletop 21 of the vibration device. Different directions of vibration of the earthquake and acceleration are simulated by the vibration devices in different installation grooves 11 to realize the simulation of the actual earthquake propagation process. Exemplarily, in an actual earthquake, in the direction away from the earthquake source, the vibration acceleration generated by the earthquake gradually weakens. When the earthquake propagation direction is consistent with the directions of the wave-current and the waves, the different vibration accelerations of the corresponding vibration devices in the two installation grooves 11 arranged in parallel along the first direction X are used to simulate the response of the second slope 52 at different distances from the earthquake source, that is, the corresponding change of the second slope 52. When the earthquake propagation direction is inconsistent with the directions of the stripping and the waves, the different vibration accelerations of the corresponding vibration devices in the two installation grooves 11 arranged in parallel along the second direction Y are used to simulate the response of the second slope 52 at different distances from the earthquake source. At the same time, different directions of vibration can be respectively formed by the vibration devices corresponding to at least two installation grooves 11 to realize the multi-degree-of-freedom, multi-direction, and multi-point coupling loading ability of the earthquake, and more realistically simulate the distributed load and the compliance disaster effect in the complex environment.

[0101] Furthermore, the separate designs of the wave device, the wave-current device, and the vibration device can respectively simulate the influence on the second slope 52 on the tabletop 21 under the coupling of one or more conditions among waves, wave-currents, and earthquakes, providing comprehensive support for the study of complex natural disasters.

[0102] It should be noted that the second slope 52 can conduct different simulation tests under different conditions of the solid wall 53, which is not specifically limited here.

[0103] In another embodiment, referring to Figure 5b as shown, the present application provides a method for an earthquake simulation shaking table test. Using the earthquake simulation shaking table test device described in any of the above embodiments, it includes:

[0104] S505. The tabletop 21 of the vibration device is respectively embedded in the at least two installation grooves 11, and a first slope 51 is formed at the bottom of the simulation box 1;

[0105] S506. Generate waves propagating along the first direction X by using the wave and current device;

[0106] S507. Generate a wave current along the first direction X by using the wave and current device and / or;

[0107] S508. Generate vibrations along one or more of the first direction X, the second direction Y, and the third direction Z by using the vibration device, and determine the response of the first slope 51 under seismic action.

[0108] Use the box body of the simulation box 1 to load water to simulate the underwater environment. Generate waves and wave currents in the first direction X through the wave device and the wave current device respectively, use the wave current to simulate the water flow velocity, and at the same time, the vibration device vibrates along one or more of the first direction X, the second direction Y, and the third direction Z to simulate an earthquake, realizing the coupling of waves, wave currents, and earthquakes, so as to realize the coupled simulation of the underwater complex environment and seismic activities. Further, the bottom of the box body provides a mounting platform for the first slope 51. That is, when the earthquake location is far from the first slope 51, the change of the first slope 51 in the underwater complex seismic environment is determined through the response of the first slope 51 under the coupled simulation.

[0109] Furthermore, mounting grooves 11 arranged in parallel along the first direction X and / or the second direction Y, and each mounting groove 11 corresponds to a tabletop 21 of the vibration device. Different directions of vibration of the earthquake and acceleration are simulated by using the vibration devices in different mounting grooves 11 to realize the simulation of the actual earthquake propagation process. Exemplarily, in an actual earthquake, in the direction away from the earthquake source, the vibration acceleration generated by the earthquake gradually weakens. When the earthquake propagation direction is consistent with the directions of the wave current and the waves, the responses of the first slope 51 at different distances from the earthquake source are simulated by using different vibration accelerations of the corresponding vibration devices in two mounting grooves 11 arranged in parallel along the first direction X, that is, the corresponding changes of the first slope 51. When the earthquake propagation direction is inconsistent with the directions of the waves and the waves, the responses of the first slope 51 at different distances from the earthquake source are simulated by using different vibration accelerations of the corresponding vibration devices in two mounting grooves 11 arranged in parallel along the second direction Y. At the same time, different directions of vibration can be formed by using the vibration devices corresponding to at least two mounting grooves 11, realizing the multi-degree-of-freedom, multi-direction, and multi-point coupling loading ability of the earthquake, and more realistically simulating the distributed load and the conforming disaster effect in the complex environment.

[0110] Furthermore, the separate designs of the wave device, the wave current device, and the vibration device can respectively simulate the influence on the first slope 51 on the tabletop 21 under the coupling of one or more of the three conditions of waves, wave currents, and earthquakes, providing comprehensive support for the study of complex natural disasters.

[0111] It should be noted that the first slope 51 can be used to conduct different simulation tests under different conditions of the retaining wall 53, and no specific limitation is provided here.

[0112] It should be noted that since water has resistance, during the process of the vibration device generating vibration to simulate an earthquake, whether for the first slope 51 or the second slope 52, the resistance of water will offset the vibration acceleration of the vibration device. For example, when the required vibration acceleration of the table 21 along the first direction X is 1 m / s 2 , the vibration acceleration of the vibration device along the first direction X needs to be greater than 1 m / s 2 so as to correct the resistance brought by water. The specific correction value is calculated according to the corresponding resistance and is not specifically limited here.

[0113] An underwater shaking table test device and method provided by the present application simulate waves and wave currents along the first direction X through wave current devices respectively, and provide vibrations along the first direction X, the second direction Y, and the third direction Z to the inside of the simulation box 1 through the vibration device to simulate an earthquake. According to the actual situation, the response of the second slope 52 located on the table 21 under the coupling of earthquake, waves, and wave currents can be coupled, or the response of the second slope 52 located on the table 21 under any one of the actions of earthquake, waves, or wave currents; or the response of the first slope 51 located at the bottom of the box body of the simulation box 1 under the coupling of earthquake, waves, and wave currents, or the response of the first slope 51 located at the bottom of the box body of the simulation box 1 under the action of earthquake, providing comprehensive support for studying the complex natural disaster environment underwater and providing different simulations according to different disaster situations. At the same time, the modular design of the water storage tank 61, the simulation box 1, and the vibration device is convenient for quick disassembly and installation, improving the test efficiency. The vibration devices corresponding to at least two installation slots 11 improve the loading capacity of multi-direction, multi-degree-of-freedom, and multi-point coupling at different positions under earthquake simulation, and more realistically simulate the distributed load and conform to the disaster effect in the complex environment. The wave current devices generate waves and wave currents respectively, avoiding mutual influence. The retaining walls 53 of the first slope 51 and the second slope 52 can be detachably and flexibly set according to different test requirements, supporting various boundary condition configurations from fully open to four-sided closed for the first slope 51 and the second slope 52, and being able to adapt to the test requirements of single-field (such as earthquake) and multi-field (such as the coupling of earthquake, waves, and wave currents).

[0114] Those of ordinary skill in the art should understand that the discussion of any above embodiment is only exemplary and is not intended to imply that the scope of the present application (including the claims) is limited to these examples; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0115] In addition, for simplicity of explanation and discussion, and so as not to make the embodiments of the present application difficult to understand, well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Further, the devices may be shown in block diagram form in order to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that details of the implementation of such block diagram devices are highly dependent on the platform on which the embodiments of the present application are to be implemented (i.e., these details should be fully within the understanding of those skilled in the art). In cases where specific details (such as circuits) are set forth to describe exemplary embodiments of the present application, it will be apparent to those skilled in the art that the embodiments of the present application may be practiced without these specific details or with variations of these specific details. Accordingly, these descriptions should be considered illustrative rather than restrictive.

[0116] Although the present application has been described in connection with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures (such as dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0117] Embodiments of the present application are intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the present application shall be included within the protection scope of the present application.

Claims

1. An underwater shaking table test device, characterized in that, Comprising: A simulation tank, including a tank body, the tank body extending in a first direction, for loading water to simulate an underwater environment and the bottom of the tank body providing a mounting platform for a first slope; A wave device, arranged in the simulation tank, for generating waves along the first direction; A wave current device, arranged in the simulation tank, for generating wave current along the first direction; Mounting grooves, including at least two, arranged side by side at the bottom of the simulation tank along the first direction and / or a second direction; A vibration device, at least including a table top, the table top being respectively embedded in the mounting grooves, providing a mounting platform for a second slope, and the vibration device respectively providing vibration in one or more directions among the first direction, the second direction and a third direction inside the tank body; wherein, the first direction and the second direction are perpendicular to the plane where the table top is located, and the plane where the third direction is located is perpendicular to the table top.

2. The underwater shaking table test device according to claim 1, wherein, It further includes: A rainfall device, the rainfall device including a rigid truss, a water source interface and atomizing nozzles; the rigid truss is arranged on one side of the simulation tank opposite to the wave current device; the atomizing nozzles are arranged on the rigid truss, and the orthographic projection of the mounting grooves on the bottom of the simulation tank is within the orthographic projection range of the atomizing nozzles on the bottom of the simulation tank; the atomizing nozzles are connected to the water source interface.

3. The underwater shaking table test device according to claim 1, wherein, The vibration device further includes: A base; A first vibrator, fixedly arranged on the side of the base facing the table top, and the first vibrator vibrates along the third direction, and one end of the first vibrator far from the base is fixedly connected to a first vibration table; A second vibrator, fixedly arranged on the side of the first vibration table far from the base, a second vibration table is arranged side by side along the first direction, the second vibrator and the second vibration table are fixedly connected, wherein a first slide rail extending in the first direction is arranged on the side of the first vibration table far from the base, and the second vibration table is slidably connected to the first slide rail; the second vibrator vibrates along the first direction; A third vibrator, fixedly arranged on the side of the second vibration table far from the base, a third vibration table is arranged side by side along the second direction, the third vibrator and the second vibration table are fixedly connected, wherein a second slide rail extending in the second direction is arranged on the side of the second vibration table far from the base, and the third vibration table is slidably connected to the second slide rail; the third vibrator vibrates along the second direction; A connecting column, fixedly arranged on the side of the third vibration table far from the base, and the table top is fixedly arranged on the side of the connecting column far from the third vibration table.

4. The underwater shaking table test device according to claim 1, wherein, The wave device includes: a wave pushing plate, a wave pushing track and a mounting frame; The mounting frame is installed on the top of one end of the simulation tank along the first direction, the extending direction of the wave pushing track is fixedly arranged on the mounting frame along the first direction, and the wave pushing plate is slidably connected to the wave pushing track; wherein the plane where the wave pushing plate is located is perpendicular to the plane where the first direction is located, and the plane where the wave pushing plate is located is inside the tank body of the simulation tank; A wave dissipation structure is arranged on the side of the tank body of the simulation tank opposite to the wave pushing plate.

5. The underwater shaking table test device according to claim 4, characterized in that, The distance between the tabletop and the wave-pushing plate along the first direction is not less than a first distance; wherein the wave-pushing plate is configured with a minimum movement speed in the first direction, and the first distance is configured to be four times the wavelength of the wave formed at the minimum movement speed.

6. The underwater shaking table test device according to claim 1, wherein, The wave current device includes: a flow-making pipe and a flow-making motor; The flow-making pipe includes a water inlet and a water outlet. Both the water inlet and the water outlet penetrate through the simulation box and extend into the interior of the box body. Moreover, the water inlet and the water outlet are at least respectively located at both ends of the installation groove along the first direction, and the water inlet is on the side close to the wave current device; the flow-making motor is connected to the flow-making pipe.

7. The underwater shaking table test device according to claim 1, characterized in that At the edges of the first slope and the second slope, there are solid walls extending along the third direction, wherein the solid walls are detachably arranged.

8. The underwater shaking table test device according to claim 1, characterized in that, At the edge of the tabletop facing the installation groove and the edge of the installation groove, there is a detachable connection with a sealing material.

9. The underwater shaking table test device according to claim 6, characterized in that, It further includes a water storage tank. The water storage tank is arranged side by side with the simulation box. The water storage tank is connected with a water supply pipe, and the end of the water supply pipe far from the water storage tank extends into the box body of the simulation box. A water supply motor is provided on the water supply pipe. One end of the flow-making pipe close to the water outlet is provided with a drain port, and a drain valve is connected at the drain port.

10. An underwater shaking table test method, characterized in that, Using the underwater shaking table test device according to any one of claims 1-9, including: The tabletop of the vibration device is respectively embedded in the at least two installation grooves, and a second slope is formed on the tabletop; the surface of the tabletop facing the interior of the box body is higher than the bottom of the box body. Generating waves transmitted along the first direction by the wave current device; And / or generating a wave current along the first direction by the wave current device; And / or generating vibrations along one or more of the first direction, the second direction, and the third direction by the vibration device, and determining the response of the first slope under the action of simulated earthquake and / or waves and / or wave current; Or the tabletop of the vibration device is respectively embedded in the at least two installation grooves, and a first slope is formed at the bottom of the simulation box; Generating waves transmitted along the first direction by the wave current device; And / or generating a wave current along the first direction by the wave current device; And / or generating vibrations along one or more of the first direction, the second direction, and the third direction by the vibration device, and determining the response of the first slope under the action of an earthquake.

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