CN113863399A - Pile foundation model test device under wave and earthquake coupling effect - Google Patents

Abstract

The invention relates to a pile foundation model test device under the wave-seismic coupling effect, wherein the upper surface of a base is fixedly connected with six first universal joints, the other ends of the six first universal joints are fixedly connected with an electro-hydraulic vibrator, the tops of the six electro-hydraulic vibrators are fixedly connected with second universal joints, the other ends of the six second universal joints are fixedly connected with the same vibration platform, the upper surface of the vibration platform is fixedly connected with a model box, the invention adopts the matching use of a wave manufacturing mechanism and the electro-hydraulic vibrator, thereby leading the device to be more similar to the actual marine environment, and simultaneously through the arrangement of the second displacement induction platform and the stress sheet, the device can accurately measure the unidirectional force applied by the uniformly distributed load to the pile foundation through the stress sheet when testing the displacement of the pile foundation column top, and realize the real-time measurement to pile foundation pile base displacement through metal slender rod and first displacement response platform.

Description

Pile foundation model test device under wave and earthquake coupling effect

Technical Field

The invention belongs to the technical field of pile foundation bearing capacity tests, and relates to a pile foundation model test device under the wave seismic coupling effect.

Background

With the continuous increase of the demand of human beings on the development of ocean resources, various offshore engineering, such as an offshore drilling platform, a sea-crossing bridge and the like, are carried, and the structural working environment in the offshore engineering is severe and is often subjected to the action of the most basic load of wave load. In addition, since our country is in the most active seismic zone around the world, marine building structures are often exposed to waves and earthquakes simultaneously when an earthquake occurs. The pile foundation is used as a main foundation form of an offshore structure, and the research on the dynamic response of the pile foundation under the action of complex environmental loads such as earthquake, wave and the like has important theoretical and engineering application values.

At present, the research on the pile-soil dynamic interaction under the wave-seismic coupling effect is not easy to realize by adopting a field test method, and because enough field data are limited by various conditions and lack, the research method of an indoor model test is mostly adopted, and various conditions such as model proportion, load size and property, environmental parameters and the like are artificially controlled by utilizing a similar principle to obtain convincing data.

According to the current pile foundation model test method, environmental factors such as wind, earthquake and the like are abstractly and idealised into horizontal load, namely pile-soil interaction when multiple loads such as vertical load, horizontal load, cyclic load and the like are applied to a pile foundation under general conditions is intensively researched, and the mutual influence of two systems of waves and earthquake in a real environment and the combined action of the two systems on the pile foundation are not considered, so that the pile foundation model test device under the wave-earthquake coupling action is provided.

Disclosure of Invention

In view of the above, the invention provides a pile foundation model test device under the wave-seismic coupling effect, in order to solve the problems that pile-soil interaction when multiple loads such as vertical, horizontal and cyclic loads are applied to a pile foundation under general conditions of centralized research, and mutual influence of two systems of waves and earthquakes in a real environment and combined action on the pile foundation are not considered.

In order to achieve the purpose, the invention provides the following technical scheme:

a pile foundation model test device under the wave seismic coupling effect comprises a base, wherein the upper surface of the base is fixedly connected with six first universal joints, the other ends of the six first universal joints are fixedly connected with an electro-hydraulic vibrator, the tops of the six electro-hydraulic vibrators are fixedly connected with second universal joints, the other ends of the six second universal joints are fixedly connected with a same vibration platform, the upper surface of the vibration platform is fixedly connected with a model box, the top of the model box is fixedly connected with a mounting plate, the upper surface of the mounting plate is fixedly connected with a frequency modulator, the upper surface of the mounting plate is provided with a wave manufacturing mechanism, the wave manufacturing mechanism comprises a fixing seat, a first supporting arm and a glass plate, the fixing seat is fixed on the upper surface of the mounting plate through bolts, the outer wall of one side of the fixing seat is fixedly connected with a motor, the first supporting arm is arranged in the fixing seat, and a first jack is arranged on one side of the first supporting arm and one side of the fixing seat, swing joint has the installation axle in the first jack, and the installation axle is fixed mutually with first support arm, the one end and the installation axle of motor output shaft are fixed mutually, the other end of first support arm is equipped with the second support arm, the second jack has all been seted up with the other end of first support arm to second support arm one end, be equipped with the third regulation in the second jack and tie, the mounting hole has been seted up to one side of glass board, be equipped with the second regulation in the mounting hole and tie, and the second regulation is tied mutually with the other end of second support arm, the bottom inner wall fixedly connected with pile foundation column of model case, the top fixedly connected with second displacement response platform of pile foundation column, the upper surface of second displacement response platform is equipped with three evenly distributed's stress piece, the equal electrically connected with signal line in one side of stress piece, one side inner wall of model case is equipped with swirl manufacturing mechanism.

Further, the bottom fixedly connected with metal slender rod of stake foundation column, the first displacement response platform of top fixedly connected with of metal slender rod, the equal electric connection of upper surface of first displacement response platform and second displacement response platform has the displacement sensing line.

Further, swirl manufacturing mechanism includes the fixed column, and the fixed column passes through the bolt fastening at one side inner wall of mold box, and the top fixedly connected with agitator of fixed column, one side electric connection of agitator have the control line, and the control line passes the mold box.

Furthermore, the upper surface of the mounting plate is fixedly connected with a damping sheet, and the damping sheet is positioned between the mounting plate and the fixed seat.

Furthermore, a drain hole is formed in one side of the model box, a drain pipe is fixedly connected to one side of the drain hole, and a control valve is arranged on one side of the drain pipe.

Furthermore, a sealing ring is arranged on one side of the drain hole and is positioned between the drain hole and the drain pipe.

Furthermore, one side of the base is provided with a triangular hole which penetrates through the base.

Furthermore, the upper surface of base is fixedly connected with a plurality of rubber circles, and the rubber circle is located between base and the first universal joint.

Furthermore, the motor and the stirrer are both electrically connected with the frequency modulator.

The invention has the beneficial effects that:

1. according to the pile foundation model test device under the wave-seismic coupling effect, the wave manufacturing mechanism and the electro-hydraulic vibrator are matched for use, so that the device can simulate sea waves and earthquakes, the device is more similar to the actual marine environment, and the simulation comprehensiveness of the device is improved.

2. According to the pile foundation model test device under the wave seismic coupling effect, the second displacement induction platform and the stress sheet are arranged at the top of the pile foundation column, so that the device can accurately measure the unidirectional force applied to the pile foundation by uniformly distributed loads while testing the displacement of the top of the pile foundation column, and the functional diversity of the device is improved.

3. According to the pile foundation model test device under the wave-seismic coupling effect, the metal thin rod and the first displacement induction platform are used, so that the real-time measurement of the displacement of the bottom of the pile foundation column is realized in the same way, and the measurement accuracy of the device is improved.

4. According to the pile foundation model test device under the wave-seismic coupling effect, the triangular holes are formed in the base, so that the device can be more stable during vibration.

5. According to the pile foundation model test device under the wave-seismic coupling effect, the rubber ring is arranged at the bottom of the electro-hydraulic vibrator, so that the vibration influence of the electro-hydraulic vibrator on the ground is reduced, the inertia caused by vibration is weakened, and the operation of parts is more efficient.

6. The pile foundation model test device under the wave-seismic coupling effect disclosed by the invention can simulate sea waves and earthquakes by the matching use of the wave manufacturing mechanism and the electro-hydraulic vibrator, thereby leading the device to be more similar to the actual marine environment, improving the comprehensiveness of the simulation of the device, and simultaneously, through the arrangement of the second displacement induction platform and the stress sheet, the device can accurately measure the unidirectional force applied to the pile foundation by uniformly distributed load through the stress sheet while testing the displacement of the pile foundation column top, thereby improving the diversity of the functions of the device, and realizes the real-time measurement of the displacement of the pile foundation pile bottom through the metal thin rod and the first displacement induction platform, improves the measurement accuracy of the device, and the rubber pad is arranged at the bottom of the electro-hydraulic vibrating machine, so that the vibration influence of the electric power vibration motor on the ground is reduced, the inertia caused by vibration is weakened, and the operation of parts is more efficient.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a three-dimensional view of a first view angle of a pile foundation model testing device under the wave seismic coupling effect according to the invention;

FIG. 2 is a three-dimensional view of a second view angle of the pile foundation model testing device under the wave seismic coupling effect according to the invention;

FIG. 3 is a three-dimensional cross-sectional view of a pile foundation model test device under the wave seismic coupling effect according to the invention;

FIG. 4 is a top view of a pile foundation model testing device under the wave seismic coupling effect according to the invention;

FIG. 5 is a bottom view of the pile foundation model testing apparatus under the wave-seismic coupling action of the present invention;

FIG. 6 is a three-dimensional view of a third view angle of the pile foundation model testing device under the wave-seismic coupling effect according to the invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 8 is a three-dimensional diagram of a wave manufacturing mechanism in the pile foundation model testing device under the wave seismic coupling effect.

Reference numerals: 1. a base; 2. a rubber ring; 3. a first universal joint; 4. an electro-hydraulic vibration machine; 5. a vibration platform; 6. a model box; 7. a metal thin rod; 8. a displacement sensing line; 9. a first displacement sensing stage; 10. pile foundation columns; 11. a wave making mechanism; 12. a frequency modulator; 13. mounting a plate; 14. a control line; 15. a seal ring; 16. a drain pipe; 17. fixing a column; 18. a stirrer; 19. a second universal joint; 20. a triangular hole; 21. a second displacement sensing stage; 22. stress sheets; 23. a signal line; 24. a fixed seat; 25. installing a shaft; 26. a first support arm; 27. a second support arm; 28. a second adjusting bolt; 29. a glass plate; 30. mounting holes; 31. a third adjusting bolt; 32. a motor; 33. a damping sheet.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Example one

As shown in figures 1-8, the pile foundation model test device under the wave-seismic coupling effect comprises six first universal joints 3 fixed on the upper surface of a base 1 through bolts, electro-hydraulic vibrators 4 fixed on the other ends of the six first universal joints 3 through bolts, second universal joints 19 fixed on the tops of the electro-hydraulic vibrators 4 through bolts, a same vibration platform 5 fixed on the other ends of the six second universal joints 19 through bolts, a model box 6 fixed on the upper surface of the vibration platform 5 through bolts, the electro-hydraulic vibrators 4 are started, the seismic vibration frequency is simulated through the liquid flow flowing through the electro-hydraulic vibrators 4 in unit area, the seismic amplitude is simulated through the volume of the flowing liquid, therefore, the model box 6 vibrates, and the six electro-hydraulic vibrators 4 have the degrees of freedom in six vibration directions, so that the effect of simulating real complex earthquakes is achieved.

The top of the model box 6 is fixed with a mounting plate 13 through bolts, the upper surface of the mounting plate 13 is fixed with a frequency modulator 12 through bolts, the upper surface of the mounting plate 13 is provided with a wave manufacturing mechanism 11, the wave manufacturing mechanism 11 comprises a fixed seat 24, a first supporting arm 26 and a glass plate 29, the fixed seat 24 is fixed on the upper surface of the mounting plate 13 through bolts, the outer wall of one side of the fixed seat 24 is fixed with a motor 32 through bolts, the fixed seat 24 is internally provided with the first supporting arm 26, one side of the first supporting arm 26 and one side of the fixed seat 24 are both provided with a first jack, a mounting shaft 25 is inserted and connected in the first jack, the mounting shaft 25 is fixed with the first supporting arm 26, one end of an output shaft of the motor 32 is fixed with the mounting shaft 25, the other end of the first supporting arm 26 is provided with a second supporting arm 27, one end of the second supporting arm 27 and the other end of the first supporting arm 26 are both provided with a second jack, a third adjusting bolt 31 is arranged in the second jack, mounting hole 30 has been seted up to one side of glass board 29, be equipped with second adjusting bolt 28 in the mounting hole 30, and second adjusting bolt 28 is fixed mutually with the other end of second support arm 27, motor 32 carries out reciprocating rotation, thereby drive first support arm 26 and rotate, first support arm 26 drives second support arm 27 and glass board 29 and swings, thereby make the surface of water produce the wave through glass board 29, and can adjust the angle of glass board 29 through second adjusting bolt 28, can adjust the angle of second support arm 27 through third adjusting bolt 31 simultaneously, thereby change the range of simulation wave.

The top of pile foundation post 10 is passed through the bolt fastening and is had second displacement response platform 21, the upper surface of second displacement response platform 21 is equipped with three evenly distributed's stress piece 22, the equal electrically connected of one side of stress piece 22 has signal line 23, second displacement response platform 21 and stress piece 22 can install in the displacement test to pile foundation post 10, can be through the accurate one-way force of measuring the equipartition load to pile foundation application of stress piece 22, the diversity of device function is improved, one side inner wall of model case 6 is equipped with vortex manufacturing mechanism.

Example two

Referring to fig. 1-8, the invention provides a new technical scheme, in the pile foundation model test device under the wave seismic coupling effect, one side of a base 1 is provided with a through triangular hole 20, the device can be more stable in vibration through the triangular hole 20, the upper surface of the base 1 is fixedly provided with six first universal joints 3 through bolts, the other ends of the six first universal joints 3 are fixedly provided with electro-hydraulic vibrators 4 through bolts, the upper surface of the base 1 is bonded with a plurality of rubber rings 2, the rubber rings 2 are positioned between the base 1 and the first universal joints 3, the rubber rings 2 reduce the vibration influence of the electro-hydraulic vibrators 4 on the ground, the inertia caused by vibration is weakened, and the operation of parts is more efficient.

The top of six electric liquid bobbing machine 4 all is passed through the bolt fastening and is had second universal joint 19, the other end of six second universal joints 19 passes through the bolt fastening and has same vibration platform 5, the upper surface of vibration platform 5 passes through the bolt fastening and has model case 6, start electric liquid bobbing machine 4, the inside liquid flow who flows through in the unit area of electric liquid bobbing machine 4 simulates earthquake vibration frequency, the volume simulation earthquake amplitude through the inflow liquid, thereby make model case 6 shake, and six electric liquid bobbing machine 4 possess the degree of freedom of six vibration directions, thereby reach the effect of simulation reality complex earthquake.

The bottom of a pile foundation column 10 is fixedly connected with a metal thin rod 7, the top of the metal thin rod 7 is fixedly provided with a first displacement induction platform 9 through bolts, the upper surfaces of the first displacement induction platform 9 and a second displacement induction platform 21 are electrically connected with displacement sensing lines 8, the real-time measurement of the pile bottom displacement of the pile foundation column 10 is realized through the same principle of the first displacement induction platform 9, the top of a model box 6 is fixedly provided with a mounting plate 13 through bolts, the upper surface of the mounting plate 13 is fixedly provided with a frequency modulator 12 through bolts, the upper surface of the mounting plate 13 is provided with a wave manufacturing mechanism 11, the wave manufacturing mechanism 11 comprises a fixed seat 24, a first supporting arm 26 and a glass plate 29, the upper surface of the mounting plate 13 is bonded with a damping sheet 33, the damping sheet 33 is positioned between the mounting plate 13 and the fixed seat 24, the damping sheet 33 can reduce the influence of the device vibration on a motor 32, the fixed seat 24 is fixed on the upper surface of the mounting plate 13 through bolts, a motor 32 is fixed on the outer wall of one side of the fixed seat 24 through a bolt, a first support arm 26 is arranged in the fixed seat 24, a first jack is respectively arranged on one side of the first support arm 26 and one side of the fixed seat 24, an installation shaft 25 is inserted in the first jack, the installation shaft 25 is fixed with the first support arm 26, one end of an output shaft of the motor 32 is fixed with the installation shaft 25, a second support arm 27 is arranged at the other end of the first support arm 26, a second jack is respectively arranged on one end of the second support arm 27 and the other end of the first support arm 26, a third adjusting bolt 31 is arranged in the second jack, an installation hole 30 is arranged on one side of the glass plate 29, a second adjusting bolt 28 is arranged in the installation hole 30, the second adjusting bolt 28 is fixed with the other end of the second support arm 27, the motor 32 rotates in a reciprocating manner to drive the first support arm 26, the first support arm 26 drives the second support arm 27 and the glass plate 29 to swing, the water surface is thus waved by the glass plate 29, while the angle of the glass plate 29 can be adjusted by the second adjusting bolt 28, while the angle of the second support arm 27 can be adjusted by the third adjusting bolt 31, so that the amplitude of the simulated waves is changed.

The top of pile foundation post 10 is passed through the bolt fastening and is had second displacement response platform 21, the upper surface of second displacement response platform 21 is equipped with three evenly distributed's stress piece 22, the equal electrically connected of one side of stress piece 22 has signal line 23, second displacement response platform 21 and stress piece 22 can install in the displacement test to pile foundation post 10 pile bolck, can be through the accurate unidirectional force of measuring the equipartition load to the pile foundation of stress piece 22, the variety of the device function is improved.

The inner wall of one side of the model box 6 is provided with a vortex manufacturing mechanism, the vortex manufacturing mechanism comprises a fixed column 17, the fixed column 17 is fixed on the inner wall of one side of the model box 6 through a bolt, the top of the fixed column 17 is fixed with a stirrer 18 through a bolt, one side of the stirrer 18 is electrically connected with a control line 14, the control line 14 penetrates through the model box 6, the stirrer 18 rotates so as to simulate the state of the submarine vortex, one side of the model box 6 is provided with a drain hole, one side of the drain hole is fixed with a drain pipe 16 through a bolt, one side of the drain pipe 16 is provided with a control valve, water in the model box 6 can be quickly drained through the drain pipe 16 after testing, one side of the drain hole is provided with a sealing ring 15, the sealing ring 15 is positioned between the drain hole and the drain pipe 16, the sealing ring 15 increases the sealing performance between the drain pipe 16 and the drain hole, and the motor 32 and the stirrer 18 are both electrically connected with the frequency modulator 12, the running efficiency of the motor 32 and the stirrer 18 can be controlled through the frequency modulator 12, so that the experimental effect of the device is improved.

The advantages of the second embodiment over the first embodiment are:

through the use of the metal thin rod 7 and the first displacement induction platform 9, the pile bottom displacement of the pile foundation column 10 is measured in real time in the same way, and the measurement accuracy of the device is improved;

secondly, the triangular hole 20 is formed in the base 1, so that the device can be more stable during vibration;

thirdly, through the setting of installing rubber circle 2 in 4 bottoms of electric liquid bobbing machine, reduced the vibrations influence that electric liquid bobbing machine 4 produced ground, weaken the inertia that the vibration brought, let the operation of part more high-efficient.

When the pile foundation model test device under the wave seismic coupling effect is used, soil is firstly added into a model box 6, water is put into the model box after the soil is compacted, an experimental object is placed on a second displacement induction platform 21, then an electro-hydraulic vibrator 4 is started, the interior of the electro-hydraulic vibrator 4 simulates seismic vibration frequency through the flow of liquid flowing in a unit area, the seismic amplitude is simulated through the volume of the flowing-in liquid, the six electro-hydraulic vibrators 4 have degrees of freedom in six vibration directions, so that the effect of simulating real complex earthquakes is achieved, then a stirrer 18 is started, the stirrer 18 rotates the water, so that seabed vortexes are simulated, a motor 32 is started, the motor 32 rotates in a reciprocating manner, so that a first supporting arm 26 is driven to rotate, the first supporting arm 26 drives a second supporting arm 27 and a glass plate 29 to swing, so that the water surface generates waves through the glass plate 29, and then simulate the condition of sea surface wave, motor 32 and agitator 18 control through frequency modulator 12 simultaneously, conveniently simulate the different states of sea water, and the displacement distance of pile foundation post 10 then changes the transmission to outside displacement display screen through second displacement induction platform 21 with corresponding displacement, thereby reach the mesh of measuring pile foundation post 10 displacement, three stress piece 22 takes place deformation in the experimentation simultaneously, internal resistance produces corresponding change, and then accurate three power of exerting on three stress piece 22 that obtains, the average value of taking three power is with the unidirectional force that simulation equipartition load applied to pile foundation post 10.

However, as is well known to those skilled in the art, the working principle and the wiring method of the first displacement sensing platform 9, the second displacement sensing platform 21, the stress piece 22, the electro-hydraulic vibrator 4, the frequency modulator 12, the stirrer 18 and the motor 32 are common and are conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (9)

1. The utility model provides a pile foundation model test device under wave earthquake coupling effect, includes base (1), its characterized in that, the last fixed surface of base (1) is connected with six first universal joints (3), the equal fixedly connected with electricity liquid bobbing machine (4) of the other end of six first universal joints (3), the equal fixedly connected with second universal joint (19) in top of six electricity liquid bobbing machines (4), the same vibration platform (5) of the other end fixedly connected with of six second universal joints (19), the last fixed surface of vibration platform (5) is connected with model case (6), the top fixedly connected with mounting panel (13) of model case (6), the last fixed surface of mounting panel (13) is connected with frequency modulator (12), the upper surface of mounting panel (13) is equipped with wave manufacturing mechanism (11), wave manufacturing mechanism (11) are including fixing base (24), The glass plate fixing device comprises a first supporting arm (26) and a glass plate (29), a fixing seat (24) is fixed on the upper surface of a mounting plate (13) through a bolt, a motor (32) is fixedly connected to the outer wall of one side of the fixing seat (24), the first supporting arm (26) is arranged in the fixing seat (24), a first insertion hole is formed in one side of the first supporting arm (26) and one side of the fixing seat (24), an installation shaft (25) is movably connected in the first insertion hole, the installation shaft (25) is fixed to the first supporting arm (26), one end of an output shaft of the motor (32) is fixed to the installation shaft (25), a second supporting arm (27) is arranged at the other end of the first supporting arm (26), a second insertion hole is formed in one end of the second supporting arm (27) and the other end of the first supporting arm (26), a third adjusting bolt (31) is arranged in the second insertion hole, a mounting hole (30) is formed in one side of the glass plate (29), be equipped with second adjusting bolt (28) in mounting hole (30), and second adjusting bolt (28) is fixed mutually with the other end of second support arm (27), bottom inner wall fixedly connected with pile foundation post (10) of mold box (6), top fixedly connected with second displacement induction platform (21) of pile foundation post (10), the upper surface of second displacement induction platform (21) is equipped with three evenly distributed's stress piece (22), and the equal electric connection in one side of stress piece (22) has signal line (23), one side inner wall of mold box (6) is equipped with vortex manufacturing mechanism.

2. The device for testing the pile foundation model under the coupling action of the waves and the earthquakes as claimed in claim 1, wherein a metal thin rod (7) is fixedly connected to the bottom of the pile foundation column (10), a first displacement induction platform (9) is fixedly connected to the top of the metal thin rod (7), and displacement sensing lines (8) are electrically connected to the upper surfaces of the first displacement induction platform (9) and the second displacement induction platform (21).

3. The device for testing the pile foundation model under the coupling action of the wave and the earthquake as claimed in claim 2, wherein the vortex manufacturing mechanism comprises a fixed column (17), the fixed column (17) is fixed on the inner wall of one side of the model box (6) through a bolt, a stirrer (18) is fixedly connected to the top of the fixed column (17), a control line (14) is electrically connected to one side of the stirrer (18), and the control line (14) penetrates through the model box (6).

4. The device for testing the pile foundation model under the coupling action of the wave and the earthquake as claimed in claim 1, wherein the upper surface of the mounting plate (13) is fixedly connected with a damping sheet (33), and the damping sheet (33) is positioned between the mounting plate (13) and the fixed seat (24).

5. The device for testing the pile foundation model under the coupling action of the waves and the earthquake as claimed in claim 1, wherein a drain hole is formed in one side of the model box (6), a drain pipe (16) is fixedly connected to one side of the drain hole, and a control valve is arranged on one side of the drain pipe (16).

6. A test device for a pile foundation model under the coupling action of a wave and a earthquake according to claim 5, characterized in that a sealing ring (15) is arranged on one side of the drain hole, and the sealing ring (15) is positioned between the drain hole and the drain pipe (16).

7. The device for testing the pile foundation model under the coupling action of the wave and the earthquake as claimed in claim 6, wherein one side of the base (1) is provided with a triangular hole (20) which penetrates through the base.

8. The device for testing the pile foundation model under the coupling action of the wave and the earthquake as claimed in claim 1, wherein a plurality of rubber rings (2) are fixedly connected to the upper surface of the base (1), and the rubber rings (2) are positioned between the base (1) and the first universal joint (3).

9. A device for testing a pile foundation model under the coupling action of waves and earthquakes as claimed in claim 3, wherein the motor (32) and the stirrer (18) are electrically connected with the frequency modulator (12).

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