A lateral force loading device and method for a drum centrifuge pile model

Abstract

This invention provides a lateral force loading device and method for a drum centrifuge pile foundation model, comprising: a drum centrifuge, which generates centrifugal force through high-speed rotation to simulate the gravity field of actual strata; a model box, which is placed inside the drum centrifuge to hold soil; a pile foundation model, which is placed inside the drum centrifuge and inserted into the soil in the model box; a load application mechanism, which applies a lateral force to the pile foundation model and can change the direction of the applied force; and a data acquisition mechanism, which is located at the pile foundation model to collect multiple mechanical parameters of the pile foundation model during the application of the lateral force by the load application mechanism. This invention is easy to operate, provides accurate data testing, and allows for the reuse of test materials. It not only leverages the advantages of centrifugation testing to effectively simulate marine soil and rock environments but also simulates the complex marine conditions where pile foundations are located. It allows for research on the long-term bearing of complex loads that vary with time and space in pile foundations, providing a reference for practical engineering applications.

Description

Technical Field

[0001] This invention relates to the field of marine geotechnical engineering foundation technology, specifically to a lateral force loading device and method for a drum centrifuge pile foundation model. Background Technology

[0002] Pile foundations are an important form of foundation engineering, widely used in civil engineering due to their mature manufacturing process, high bearing capacity, and high stability. Because marine foundations are mostly composed of deep, soft soil layers, pile foundations have seen even wider application. Pile foundations in marine environments, whether in open-air docks or traditional offshore oil and gas platforms, operate under complex marine conditions over long periods, bearing various loads that vary with time and space, such as wind loads, waves, tides, and ocean currents. Therefore, studying pile foundations under wave and current loads, as well as the hydraulics of the surrounding marine soil, is crucial for improving the safety, structural reliability, and service life of marine pile foundations and their caps.

[0003] To simulate pile foundations and pile caps exposed to long-term marine environments, a device capable of periodically applying lateral forces is needed, building upon existing drum centrifuge testing equipment, to simulate the effects of tides and waves in the ocean. Due to the complex sea conditions facing the pile foundations, the testing equipment also needs to adjust the magnitude of its force on the pile foundations in real time. Furthermore, different water depths and wave conditions will affect the point of application of environmental loads; therefore, the testing equipment should be capable of applying loads to different points of application. Once a drum centrifuge testing equipment meeting these conditions is obtained, it is only necessary to collect measured environmental load data, process this data, and input it into the device to conveniently simulate pile foundations in a marine environment.

[0004] Many experts and scholars have conducted extensive research on the bearing capacity of pile foundations, but most of this research has focused on the vertical bearing capacity of pile foundations, with relatively little research on the bearing performance of pile foundations under horizontal loads and horizontal cyclic loads. Furthermore, existing centrifuge lateral force loading devices generally only provide fixed force loading and cannot change the loading direction.

[0005] A review of existing technical literature revealed that Chinese scholars Zhao Shouzheng conducted research on centrifuge model tests of the horizontal bearing capacity of single piles in 2013; Dong Aimin studied the horizontal bearing capacity of wind turbine pile foundations considering cyclic loading in 2017; and Tang Hu studied the impact of scour on the horizontal bearing performance of offshore platform pile foundations in 2012. However, none of these studies explicitly proposed a simulation device for the periodic loading of lateral forces on a centrifuge. Therefore, this paper proposes a test device and method for using a drum centrifuge to apply periodic variable-direction lateral forces to pile foundations, which has certain guiding significance for research on pile foundation engineering in actual marine environments. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a lateral force loading device and method for a drum centrifuge pile foundation model.

[0007] According to one aspect of the present invention, a lateral force loading device for a drum centrifuge pile foundation model is provided, comprising:

[0008] A drum centrifuge, wherein the high-speed rotation of the drum centrifuge generates centrifugal force to simulate the gravitational field of actual strata;

[0009] A model box, which is set inside the drum centrifuge for holding soil;

[0010] A pile foundation model is placed inside the drum centrifuge and inserted into the soil inside the model box.

[0011] A load application mechanism that periodically applies a lateral force to the pile foundation model and can change the direction of the applied force;

[0012] A data acquisition mechanism is installed at the pile foundation model to collect multiple mechanical parameters of the pile foundation model during the application of lateral force by the load application mechanism.

[0013] Preferably, the drum centrifuge comprises:

[0014] The drum is a cavity in the inner side wall of the centrifuge, and the model box is disposed inside the drum and fits its size.

[0015] A workbench, located at the center of the drum, is used to mount the load application mechanism and the data acquisition mechanism.

[0016] Preferably, the load application mechanism includes:

[0017] A robotic arm, one end of which is fixed to the workbench and the other end is connected to the pile foundation model and pushes it into the model box placed inside the drum centrifuge to simulate the process of the pile foundation being driven into the soil.

[0018] A torsion tensile testing machine is disposed between the manipulator and the pile foundation model to provide the required tensile force to the pile foundation model;

[0019] An electric motor, which drives the torsional tensile testing machine;

[0020] A tension ring, wherein the tension ring is sleeved on the outer wall of the pile foundation model;

[0021] A tension ring bearing, wherein the tension ring bearing is sleeved on the outer ring of the tension ring;

[0022] A rope, one end of which is connected to the torsion tension machine and the other end of which is connected to the tension ring bearing, is used to transmit tension. The motor excitation is transmitted to the torsion tension machine, causing the rope to be taut and transmitted through the tension ring bearing to the tension ring fitted on the outer ring of the pile foundation model, thereby achieving lateral force loading on the pile foundation model.

[0023] A 360-degree commutator is connected to the torsion tensile testing machine. The 360-degree commutator is controlled and driven by an external computer, thereby driving the torsion tensile testing machine and changing the direction of the force applied by the torsion tensile testing machine.

[0024] Preferably, the height of the tension ring can be adjusted as needed, that is, by adjusting the position of the clamping sleeve on the pile foundation model, and by adjusting the relative height between the torsion tension machine and the bottom of the pile foundation model through the manipulator, thereby changing the point of application of the lateral force.

[0025] Preferably, the 360-degree commutator is controlled by an external computer to switch directions at a set speed, thereby simulating the periodic cyclic loading process of lateral force:

[0026] When the 360-degree commutator completes a 180° rotation at a set time interval, it can simulate the periodic horizontal wave force exerted on the pile foundation model by the wave crests and troughs.

[0027] When the 360-degree commutator continuously reverses at the set rotation speed, it can simulate the loading process of the cyclic lateral force generated around the pile foundation by the real environmental load.

[0028] Preferably, the tension ring is equipped with a tension ring bearing to ensure that the pile foundation model rotates around the pile foundation axis and remains stable when the direction of the applied force by the torsion tension machine changes, and the direction of the applied force changes accordingly.

[0029] An external computer controls the 360-degree commutator to switch directions as needed, driving the torsion tension machine fixed to it by bolts to rotate. The rope is tightened under tension, and the tension ring bearing rotates accordingly, changing the direction of the lateral force on the pile foundation model, so as to achieve the purpose of loading lateral force on the pile foundation model in any radial direction.

[0030] Preferably, the 360-degree commutator includes:

[0031] A rotating ring, which is connected to the torsion tensile testing machine;

[0032] A commutator motor, wherein the commutator motor is disposed at the center of the rotating ring;

[0033] A commutator control unit is connected to the commutator motor. The commutator control unit is controlled by a computer to drive the commutator motor, which in turn drives the rotating ring to drive the torsion tension machine to achieve commutation.

[0034] Preferably, the data acquisition mechanism includes multiple sensors, a data acquisition instrument, and a computer for storing data; the multiple sensors include a torsion gauge, a pore water pressure gauge, and an earth pressure gauge.

[0035] The data acquisition instrument is located at the front end of the manipulator; the pore water pressure gauge and the earth pressure gauge are located at the pile foundation model; the torsion tensile gauge consists of a chute and a built-in tension sensor, the chute is used to control the tension measurement direction of the torsion tensile gauge, and the tension sensor is connected between the tension ring and the torsion tensile machine by a rope.

[0036] The data acquisition device collects data from multiple sensors and uploads it to the computer that stores the data.

[0037] According to a second aspect of the present invention, a method for applying lateral force to a pile foundation model of a drum centrifuge is provided, comprising:

[0038] Install the drum centrifuge, load loading mechanism, pile foundation model, and data acquisition mechanism;

[0039] The soil was poured into the model box and consolidated for several days.

[0040] Water is poured into the model box until the water level is a set distance above the soil surface, so that the test soil remains saturated.

[0041] A lateral force loading test is conducted on the pile foundation model. The tensile force of the torsion tensile tester, the steering angle of the 360-degree commutator, the time interval or the continuous rotation speed are set according to the test requirements. Multiple mechanical parameters of the pile foundation model are collected and recorded by a data acquisition mechanism.

[0042] Preferably, the installation of the drum centrifuge, load loading mechanism, pile foundation model, and data acquisition mechanism includes:

[0043] Install a load loading mechanism at the front end of the workbench: Install a robot arm at the front end of the workbench and connect a mud-filling pipe to the robot arm; install the 360-degree commutator motor together with the robot arm, and use bolts to connect and fix the torsion tension machine and the commutator motor; nest the tension ring at the corresponding action point of the pile foundation model, and connect it to the torsion tension machine after wrapping the tension ring bearing with a rope;

[0044] Install the data acquisition mechanism and pile model at the front end of the workbench: place the pore water pressure gauge and earth pressure gauge in the pile model, then nest the tension gauge between the tension ring and the torsion tension machine, and connect the pile model and the robot with bolts.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The transverse force loading device and method for the pile foundation model of the drum centrifuge in this embodiment of the invention are easy to operate, accurate in data testing, and the test materials can be reused. It can not only give full play to the advantages of centrifugation test to better simulate the marine soil and rock environment, but also simulate the complex marine conditions where the pile foundation is located. It can be used to study the complex loads that the pile foundation bears over a long period of time and space, and provide a reference for practical engineering applications.

[0047] The transverse force loading device and method for a drum centrifuge pile foundation model in this invention has an ingenious structural design of its load application mechanism, which can not only realize the application of force and reversal in any radial direction of the pile foundation model, but also avoid the force delay during reversal, realize the synchronization of the periodic load application of the force and the force application, and provide accurate simulation of the marine environment. Attached Figure Description

[0048] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0049] Figure 1 This is a structural diagram of a lateral force loading device for a drum centrifuge pile foundation model according to an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram of the load application mechanism in a preferred embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the structure of a 360-degree commutator in a preferred embodiment of the present invention.

[0052] In the diagram: 1. Drum centrifuge, 11. Model box, 12. Workbench, 121. Data transmission cable, 122. Mud filling pipe; 2. Load application mechanism, 21. Robotic arm, 22. Torsion tensile testing machine, 23. 360-degree commutator, 24. Tension ring, 241. Tension ring bearing, 25. Torsion tensile testing machine motor, 26. Rope, 27. Commutator motor, 28. Commutator control system, 29. Rotating ring; 3. Data acquisition mechanism, 31. Data acquisition instrument, computer, 32. Pore water pressure gauge, 33. Earth pressure gauge, 34. Tension gauge, 35; 4. Pile foundation model. Detailed Implementation

[0053] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0054] See Figure 1 and Figure 2 This invention provides an embodiment of a lateral force loading device for a drum centrifuge pile foundation model, comprising a drum centrifuge 1, a model box 11, a load application mechanism 2, a data acquisition mechanism 3, and a pile foundation model 4; wherein, the drum centrifuge 1 rotates at high speed to generate centrifugal force, simulating the gravity field of actual strata; the model box 11 is disposed inside the drum centrifuge 1 to hold soil; the pile foundation model 4 is disposed inside the drum centrifuge 1 and inserted into the model box. 11 In the soil; the load application mechanism 2 applies a lateral force to the pile foundation model 4 and changes the direction of the force; the data acquisition mechanism 3 is set at the pile foundation model 4 to collect multiple mechanical parameters of the pile foundation model 4 when the load application mechanism applies the lateral force.

[0055] This embodiment can not only leverage the advantages of centrifugation testing to better simulate marine soil and rock environments, but also simulate the complex marine conditions where pile foundations are located. It studies the complex loads that pile foundations bear over a long period of time and space, providing a reference for practical engineering applications.

[0056] In a preferred embodiment of the invention, a preferred structure for a drum centrifuge is provided. See also Figure 1 The drum centrifuge 1 includes a circular hollow drum, and a model box 11 is disposed inside the drum, fitting the drum in size. The model box 11 is used to hold soil. The high-speed rotation of the drum centrifuge generates centrifugal force, thereby enabling the soil inside the model box 11 to simulate the gravity field of actual strata.

[0057] Inside the drum centrifuge 1, there is a workbench 12, on which a data transmission cable 121 and a mud-adding pipe 122 are mounted. The workbench 12 is used to mount the load application mechanism and the data acquisition mechanism. The data transmission cable 121 aggregates the various parameter data collected by the data acquisition mechanism to an external computer. The end of the mud-adding pipe 122 leads to the model box 11, through which soil and water are added to the model box 11.

[0058] In this embodiment, a gravity field simulation environment is provided by a drum centrifuge, which enables scaled-down model tests and provides a reference for practical engineering applications.

[0059] In a preferred embodiment of the invention, a preferred structure for the load application mechanism 2 is provided. See also Figure 1 and Figure 2 The load application mechanism 2 includes a manipulator 21. One end of the manipulator 21 is connected to the workbench 12, and the other end is in contact with the pile foundation model 4. The manipulator 21 pushes the pile foundation model 4 into the simulated soil of the model box 11 by the jacking force, simulating the process of the pile foundation entering the soil.

[0060] A torsion tension machine 22 is installed between the robotic arm 21 and the pile foundation model 4. The torsion tension machine 22 is controlled to rotate by a torsion tension machine motor 25. A tension ring 24 is installed outside the simulated pile foundation 4, and the tension ring 24 is connected to the torsion tension machine 22 by a rope 26. Specifically, the load application mechanism 2 drives the tension machine 22 through the torsion tension machine motor 25, and generates tension on the tension ring 24 through the rope 26, thereby acting on the pile model.

[0061] In a preferred embodiment, a 360-degree commutator 23 is provided on top of the torsion tension machine motor 25. As the commutator 23 rotates, the tension machine 22 drives the rope 26 to change direction, and the bearing 241 attached to the tension ring 24 rotates accordingly, thereby changing the force direction of the pile foundation. Specifically, see... Figure 3 The commutator 23 includes a commutator motor 27, a commutator control unit 28, and a rotating ring 29. The commutator control unit 28 is connected to the commutator motor 27. The commutator control unit 28 drives the commutator motor 27 through computer control, which in turn drives the rotating ring 29 to drive the torsion tension machine 22 to achieve commutation.

[0062] The 360-degree commutator is controlled by an external computer to switch directions at a set speed, thereby simulating the cyclic loading process of lateral force.

[0063] When the 360-degree commutator completes a 180° rotation at a set time interval, it can simulate the periodic horizontal wave force exerted on the pile foundation model by the wave crests and troughs.

[0064] When the 360-degree commutator continuously reverses at a relatively slow speed, it can simulate the loading process of the cyclic lateral force generated by the real environmental load on the pile foundation. The specific value of the relatively slow speed is related to the actual environmental load distribution on the pile foundation, and its rotation period is usually 10-20s.

[0065] In a preferred embodiment, the height of the tension ring can be adjusted, and the relative height between the torsion tension machine and the bottom of the pile foundation model can be adjusted by a robotic arm, thereby changing the point of application of the lateral force.

[0066] In a preferred embodiment of the present invention, a preferred configuration of the data acquisition mechanism 3 is provided, including a data acquisition unit 31, a computer 32 for recording data, a pore water pressure gauge 33, an earth pressure gauge 34, and a tension gauge 35. The pore water pressure gauge 33, earth pressure gauge 34, and tension gauge 35 are used to measure data. The data acquisition unit 31 collects data from each sensor and uploads it to the computer 32. The data acquisition unit 31 is mounted on the front end of the robotic arm. The computer 32, as an external computer, is located on top of the drum centrifuge 1 and connected to the data acquisition unit 31 via a data transmission cable 121. The pore water pressure gauge 33 and earth pressure gauge 34 are mounted on the pile foundation model 4 to collect the water pressure and earth pressure on the pile foundation model. The tension gauge 35 is mounted on a torsion tensile testing machine 22 to read the tensile force data. The external computer controls the torsion tensile testing machine motor 25 to excite and change the magnitude of the tensile force.

[0067] Based on the same inventive concept, this invention also provides an embodiment of a method for applying lateral force to a drum centrifuge pile foundation model, comprising:

[0068] S100, install the load loading mechanism, pile foundation model and data acquisition mechanism;

[0069] S200, the soil is poured into the model box and consolidated for several days;

[0070] S300: Water is poured into the model box until the water level is a set distance above the soil surface, thus keeping the test soil saturated.

[0071] S400 is used to conduct lateral force loading tests on pile foundation models. The tensile force of the torsion tensile tester, the steering angle of the 360-degree commutator, the time interval or the continuous rotation speed are set according to the test requirements, and the data acquisition mechanism collects and records the values ​​of each sensor.

[0072] In a preferred embodiment, the method for applying lateral force to a drum centrifuge pile foundation model includes the following steps:

[0073] 1) Assemble the pile foundation model 4 as needed, attach the pore water pressure gauge 33 and earth pressure gauge 34 to the pile foundation model, and at the same time, pour saturated soil into the model box 11 through the mud filling pipe 122 for consolidation for 3 to 5 days.

[0074] 2) A data acquisition device 31 is installed at the front end of the robotic arm 21 and connected to an external computer 32 via a data transmission cable 121;

[0075] 3) Water is poured into the model box 11 from bottom to top through the mud filling pipe 122, with the water level 3-5 cm above the soil surface, so as to keep the soil saturated during the test.

[0076] 4) Install the commutator 23 and assemble the commutator control system 28, commutator motor 27 and rotating ring 29 together;

[0077] 5) Install the torsion tensile testing machine 22, and assemble the torsion tensile testing machine motor 25, tension gauge 35, rope 26, tension ring 24 and its bearing 241 together;

[0078] 6) The 360-degree commutator 23 and the robot arm 21 are installed together via the commutator motor 27, and the torsion tension machine 22 and the commutator motor 27 are fixed together with bolts;

[0079] 7) Nest the tension ring 24 at the corresponding action point of the pile foundation model 4, and fix the manipulator 21 and the pile foundation model 4 with bolts;

[0080] 8) Conduct a transverse force loading test on the pile foundation model. Set the tension magnitude, turning angle, time interval or continuous rotation speed according to the test requirements. Collect the readings of the pore water pressure gauge 33, soil pressure gauge 34 and tension gauge 35 through the data acquisition instrument 31 and record them on the computer 32.

[0081] In this embodiment, soil is consolidated and prepared in the model box of a drum centrifuge according to the test requirements. Then, a model pile body that is proportionally reduced according to the actual situation is driven in. Lateral force excitation is obtained by a torsion tension machine installed on the robotic arm. The direction of force application of the tension machine can be changed as needed by a 360-degree reversing device. Different sizes, different radial directions, different points of action, and periodic lateral forces can be applied to the pile foundation model in the drum centrifuge. The operation is convenient and the data is reliable.

[0082] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention. The above preferred features can be used in any combination without conflict.

Claims

1. A lateral force loading device for a pile model of a drum centrifuge, characterized by, include: A drum centrifuge, wherein the high-speed rotation of the drum centrifuge generates centrifugal force to simulate the gravitational field of actual strata; A model box, which is set inside the drum centrifuge for holding soil; A pile foundation model is placed inside the drum centrifuge and inserted into the soil inside the model box. A load application mechanism that periodically applies a lateral force to the pile foundation model and can change the direction of the applied force; A data acquisition mechanism is installed at the pile foundation model to collect multiple mechanical parameters of the pile foundation model during the application of lateral force by the load application mechanism. The load application mechanism includes: A robotic arm, one end of which is fixed to the worktable of the drum centrifuge, and the other end is connected to the pile foundation model and pushes it into the model box placed inside the drum centrifuge to simulate the process of the pile foundation entering the soil; A torsion tensile testing machine is disposed between the manipulator and the pile foundation model to provide the required tensile force to the pile foundation model; An electric motor, which drives the torsional tensile testing machine; A tension ring, wherein the tension ring is sleeved on the outer wall of the pile foundation model; A tension ring bearing, wherein the tension ring bearing is sleeved on the outer ring of the tension ring; A rope, one end of which is connected to the torsion tension machine and the other end of which is connected to the tension ring bearing, is used to transmit tension. The motor excitation is transmitted to the torsion tension machine to tighten the rope, which is then transmitted to the tension ring fitted on the outer ring of the pile foundation model through the tension ring bearing, thereby loading the pile foundation model with lateral force. A 360-degree commutator is connected to the torsion tensile testing machine. The 360-degree commutator is controlled and driven by an external computer, thereby driving the torsion tensile testing machine and changing the direction of the force applied by the torsion tensile testing machine. The load application mechanism enables the application of different sizes, radial directions, points of application, and periodic lateral forces to the pile foundation model in the drum centrifuge.

2. The transverse force loading device for a drum centrifuge pile foundation model according to claim 1, characterized in that, The drum centrifuge includes: The drum is a cavity in the inner side wall of the centrifuge, and the model box is disposed inside the drum and fits its size. A workbench, located at the center of the drum, is used to mount the load application mechanism and the data acquisition mechanism.

3. The lateral force loading device for a drum centrifuge pile foundation model according to claim 1, characterized in that, The height of the tension ring can be adjusted as needed, that is, by adjusting the position of the clamping sleeve on the pile foundation model, and by adjusting the relative height between the torsion tension machine and the bottom of the pile foundation model through the manipulator, thereby changing the point of application of the lateral force.

4. The lateral force loading device for a drum centrifuge pile foundation model according to claim 1, characterized in that, The 360-degree commutator is controlled by an external computer to switch directions at a set speed, thereby simulating the cyclic loading process of lateral force. When the 360-degree commutator completes a 180° rotation at a set time interval, it can simulate the periodic horizontal wave force exerted on the pile foundation model by the wave crests and troughs. When the 360-degree commutator continuously reverses at the set rotation speed, it can simulate the loading process of the cyclic lateral force generated around the pile foundation by the real environmental load.

5. A lateral force loading device for a drum centrifuge pile foundation model according to claim 1, characterized in that, The tension ring is equipped with a tension ring bearing to ensure that the pile foundation model rotates around the pile foundation axis and remains stable when the direction of the applied force by the torsion tension machine changes, and the direction of the applied force changes accordingly. An external computer controls the 360-degree commutator to switch directions as needed, driving the torsion tension machine fixed to it by bolts to rotate. The rope is tightened under tension, and the tension ring bearing rotates accordingly, changing the direction of the lateral force on the pile foundation model, so as to achieve the purpose of loading lateral force on the pile foundation model in any radial direction.

6. A lateral force loading device for a drum centrifuge pile foundation model according to claim 1, characterized in that, The 360-degree commutator includes: A rotating ring, which is connected to the torsion tensile testing machine; A commutator motor, wherein the commutator motor is disposed at the center of the rotating ring; A commutator control unit is connected to the commutator motor. The commutator control unit drives the commutator motor through computer control, thereby driving the torsion tension machine to achieve commutation.

7. A lateral force loading device for a drum centrifuge pile foundation model according to claim 1, characterized in that, The data acquisition mechanism includes multiple sensors, a data acquisition instrument, and a computer for storing data; the multiple sensors include a torsion gauge, a pore water pressure gauge, and an earth pressure gauge. The data acquisition instrument is located at the front end of the manipulator; the pore water pressure gauge and the earth pressure gauge are located at the pile foundation model; the torsion tensile gauge consists of a chute and a built-in tension sensor, the chute is used to control the tension measurement direction of the torsion tensile gauge, and the tension sensor is connected between the tension ring and the torsion tensile machine by a rope; The data acquisition device collects data from multiple sensors and uploads it to the computer that stores the data.

8. A method for applying lateral force using the lateral force loading device for a drum centrifuge pile foundation model as described in claim 1, characterized in that, include: Install the drum centrifuge, load loading mechanism, pile foundation model, and data acquisition mechanism; The soil was poured into the model box and consolidated for several days. Water is poured into the model box until the water level is a set distance above the soil surface, so that the test soil remains saturated. A lateral force loading test is conducted on the pile foundation model. The tensile force of the torsion tensile tester, the steering angle of the 360-degree commutator, the time interval or the continuous rotation speed are set according to the test requirements. Multiple mechanical parameters of the pile foundation model are collected and recorded by a data acquisition mechanism.

9. The lateral force loading method according to claim 8, characterized in that, The installation of the drum centrifuge, load loading mechanism, pile foundation model, and data acquisition mechanism includes: Install a load loading mechanism at the front end of the workbench: Install a robot arm at the front end of the workbench and connect a mud-filling pipe to the robot arm; install the 360-degree commutator motor together with the robot arm, and use bolts to connect and fix the torsion tension machine and the commutator motor; nest the tension ring at the corresponding action point of the pile foundation model, and connect it to the torsion tension machine after wrapping the tension ring bearing with a rope; Install the data acquisition mechanism and pile model at the front end of the workbench: place the pore water pressure gauge and earth pressure gauge in the pile model, then nest the tension gauge between the tension ring and the torsion tension machine, and connect the pile model and the robot with bolts.

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