Earthquake landslide simulation test device coupling fault movement and pulse vibration
By designing an earthquake landslide simulation test device that couples fault slippage and velocity pulse vibration, the problem that existing devices cannot simultaneously simulate real fault slippage and velocity pulse vibration has been solved, enabling flexible simulation of complex seismogenic faults and improving the accuracy of simulation results.
Patent Information
- Application Number
- CN202511176043.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2025-11-21
Smart Images
Figure CN120992141A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of physical simulation technology of geological disasters, and specifically relates to an earthquake landslide simulation test device that couples fault displacement and pulse vibration. Background Technology
[0002] Existing landslide physical simulation devices mostly focus on single factors (such as rainfall, earthquakes, or uniform fault slippage). For example, existing technologies use shaking table tests to analyze the dynamic response and vibration instability mechanisms of slopes under earthquakes of different frequencies and amplitudes. These conventional shaking tables are used to simulate the impact of far-field earthquake vibrations on landslides. Another method uses a frame-type test device to simulate the effect of fault slippage on slope dynamic instability, achieving uniform slippage between the two fault plates. However, from an earthquake engineering perspective, when the stress in the locked segment of an active fault reaches a critical value, the two fault plates suddenly slide, releasing energy that propagates as seismic waves, forming an earthquake. Therefore, fault slippage in the near-fault field is usually accompanied by velocity pulse vibrations, and the coupling effect of these two factors can significantly alter the initiation and failure modes of landslides.
[0003] However, shaking tables cannot physically simulate the near-field seismic effects under fault displacement. Frame-type test devices cannot characterize the triggering mechanism of landslides caused by velocity pulse effects during actual earthquake fault displacement. In other words, existing test devices can only simulate single uniform fault displacement effects or far-field vibration effects, and have not yet effectively achieved the synchronous loading and dynamic simulation of actual fault displacement loads and velocity pulse loads. The main shortcomings are as follows: 1. Lack of sliding effect of coupled seismic action: Traditional test devices focus on uniform fault displacement or far-field vibration simulation, making it difficult to simultaneously simulate the sliding effect of the coupling effect between actual fault displacement and velocity pulse vibration.
[0004] 2. Uniform fault displacement does not conform to the real source rupture mechanism: Existing single fault displacement simulation test devices often apply displacement load at a uniform speed, which cannot reflect the velocity pulse effect when the seismogenic fault actually displaces.
[0005] 3. Insufficient flexibility in simulating faults with different activity characteristics: Existing test devices use fixed dip angles or single fault structures, which can only simulate the influence mechanism of a single type of seismogenic fault on landslides and cannot be adapted to complex seismogenic faults.
[0006] Therefore, it is necessary to design an earthquake landslide simulation test device that couples fault displacement and pulse vibration to solve the above problems. Summary of the Invention
[0007] To address the aforementioned problems, this invention provides an earthquake landslide simulation test device that couples fault slippage with pulse vibration, thereby solving the problems mentioned in the background art.
[0008] To achieve the above objectives, the present invention provides the following technical solution: an earthquake landslide simulation test device that couples fault slippage and pulse vibration includes a model box system and a drive system; The model box system includes a vertically movable model box and a horizontally movable model box. The vertically movable model box has openings at the top and rear, and the horizontally movable model box has openings at the top and front. The rear opening of the vertically movable model box is opposite to the front opening of the horizontally movable model box. The drive system includes a high-thrust vertical actuator and a high-thrust horizontal actuator. The high-thrust vertical actuator is driven by the vertical misalignment model box and is used to provide vertical velocity pulse-type misalignment and vibration loads to the vertical misalignment model box. The high-thrust horizontal actuator is driven by the horizontal misalignment model box and is used to provide horizontal velocity pulse-type misalignment and vibration loads to the horizontal misalignment model box.
[0009] Furthermore, the model box system also includes model box side plates, with both ends of the vertically staggered model box side opening connected to the model box side plates, and both ends of the horizontally staggered model box side opening connected to the model box side plates.
[0010] Furthermore, both the vertically staggered model box and the horizontally staggered model box include a base plate and three side plates, which are made of square steel pipes and transparent acrylic sheets.
[0011] Furthermore, the drive system also includes a vertical auxiliary actuator, which is connected to the vertically shifting model box and is used to provide a vertical auxiliary load to the vertically shifting model box.
[0012] Furthermore, the earthquake landslide simulation test device for coupled fault slippage and pulse vibration also includes a foundation and reaction wall system, the drive system also includes a hydrostatic guide rail, the foundation and reaction wall system includes a rigid base for the guide rail, the lower part of the hydrostatic guide rail is connected to the rigid base for the guide rail, and the upper part of the hydrostatic guide rail is connected to the horizontal slippage model box by a rigid bolt.
[0013] Furthermore, the earthquake landslide simulation test device coupled with fault slippage and pulse vibration also includes a control system. The control system includes a hydraulic pump station, a hydraulic servo control unit, a high-performance main controller, and a high-precision platform sensor module. The hydraulic pump station includes multiple high-pressure oil pumps, which are connected to the high-thrust vertical actuator, the vertical auxiliary actuator, and the high-thrust horizontal actuator through high-pressure pipelines. The hydraulic servo control unit is used to adjust the oil flow rate of the hydraulic pump station; The high-performance main controller is used to coordinate the actions of the high-thrust vertical actuator, the vertical auxiliary actuator, and the high-thrust horizontal actuator. The high-precision tabletop sensor module is used to monitor the tabletop's motion status in real time and feed it back to the high-performance main controller to achieve closed-loop control.
[0014] Furthermore, the foundation and reaction wall system also includes a reaction wall located at the end of the rigid base of the slide rail, and the high-thrust horizontal actuator is connected to the reaction wall.
[0015] Furthermore, the foundation and reaction wall system also includes a concrete foundation, the concrete base being located at the lower end of the high-thrust horizontal actuator and the vertical auxiliary actuator, both of which are connected to the concrete foundation.
[0016] The technical effects and advantages of this invention are as follows: 1. It can simultaneously load real fault displacement loads and velocity pulse loads, and simulate the dual-field coupled seismic effect of fault displacement and vibration of real seismogenic faults through the linkage of fault disk displacement and pulse vibration.
[0017] 2. It can simulate the faulting and pulse effects of four single seismogenic faults on landslides: left-lateral strike-slip fault, right-lateral strike-slip fault, thrust fault, and normal fault. It can also simultaneously couple the faulting and pulse effects of complex seismogenic faults such as left-lateral strike-slip + thrust, left-lateral strike-slip + normal fault, right-lateral strike-slip + thrust, and right-lateral strike-slip + normal fault on landslides.
[0018] 3. Compared to conventional fault slip test devices that can only apply uniform slip rates, this device can apply pulse slip rates with arbitrary complex combinations of frequencies and amplitudes.
[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and drawings. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the structure of the earthquake landslide simulation test device with coupled fault displacement and pulse vibration according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the model box system and drive system according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the model box system and drive system from another perspective of an embodiment of the present invention is shown.
[0022] Reference numerals: 1. Vertically movable model box; 2. Horizontally movable model box; 3. Side plate of model box; 4. High-thrust vertical actuator; 5. Vertical auxiliary actuator; 6. High-thrust horizontal actuator; 7. Hydrostatic guide rail; 8. Hydraulic pump station; 9. Hydraulic servo control unit; 10. High-performance main controller; 11. High-precision platform sensor module; 12. Reaction wall; 13. Rigid base of slide rail; 14. Concrete foundation. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] The positive X-axis points forward, and the negative X-axis points backward; the positive Y-axis points left, and the negative Y-axis points right; the positive Z-axis points upward, and the negative Z-axis points downward.
[0025] like Figures 1 to 3 As shown, an earthquake landslide simulation test device for coupling fault slippage and pulse vibration according to an embodiment of the present invention includes a model box system and a drive system; The model box system includes a vertically movable model box 1 and a horizontally movable model box 2. The vertically movable model box 1 has openings at the top and rear, and the horizontally movable model box 2 has openings at the top and front. The rear opening of the vertically movable model box 1 is opposite to the front opening of the horizontally movable model box 2. The drive system includes a high-thrust vertical actuator 4 and a high-thrust horizontal actuator 6. The high-thrust vertical actuator 4 is drivenly connected to the vertical misalignment model box 1 and is used to provide vertical velocity pulse-type misalignment and vibration loads to the vertical misalignment model box 1. The high-thrust horizontal actuator 6 is drivenly connected to the horizontal misalignment model box 2 and is used to provide horizontal velocity pulse-type misalignment and vibration loads to the horizontal misalignment model box 2.
[0026] Specifically, the vertical slip model box 1 and the horizontal slip model box 2 adopt a layered steel structure frame, with replaceable bedrock-slide contact surfaces inside. The inclination angle of the contact surfaces can be continuously adjusted within the range of 0°-60°, and the surfaces are covered with replaceable friction coefficient materials to simulate different geological conditions.
[0027] The high-thrust vertical actuator 4 is connected and fixed to the bottom plate of the vertical displacement model box 1 by rigid bolts and is hydraulically driven. It is designed with a thrust of 2-4 meganewtons (MN), a cylinder diameter of 250mm, and a stroke of ±300mm. It uses wear-resistant seals and a high-strength chrome-plated alloy piston rod. It mainly provides vertical velocity pulse-type displacement and vibration load to the vertical displacement model box 1 through extension and retraction. The velocity pulse waveform can be a half sine wave or an artificial pulse waveform. The cumulative displacement upward represents the simulated reverse fault, and the cumulative displacement downward represents the simulated normal fault.
[0028] The high-thrust horizontal actuator 6 is fixed to the side plate of the horizontal displacement model box 2 with rigid bolts and is hydraulically driven. The design thrust is 1-2 meganewtons (MN), the cylinder diameter is 200mm, and the stroke is ±300mm. The internal components use wear-resistant seals and high-strength chrome-plated alloy piston rods. It mainly provides horizontal velocity pulse-type displacement and vibration load to the horizontal displacement model box 2 through extension and retraction. The velocity pulse waveform can be a half sine wave or an artificial pulse waveform. The cumulative displacement to the left represents the simulation of a left-handed fault, and the cumulative displacement to the right represents the simulation of a left-handed fault.
[0029] In this embodiment, a high-thrust vertical actuator 4 acts on the vertical fault model box 1 to provide vertical velocity pulse-type faulting and vibration loads. The cumulative displacement upward within the vertical fault model box 1 represents a simulated reverse fault, and the cumulative displacement downward represents a simulated normal fault. Next, a high-thrust horizontal actuator 6 is used to provide horizontal velocity pulse-type faulting and vibration loads to the horizontal fault model box 2. The cumulative displacement to the left of the horizontal fault model box 2 represents a simulated left-lateral fault, and the cumulative displacement to the right represents a simulated right-lateral fault.
[0030] Therefore, the actual fault displacement load and velocity pulse load can be loaded simultaneously. By linking the fault disk displacement with the pulse vibration, the dual-field coupled seismic effect of the actual seismogenic fault displacement and vibration can be simulated.
[0031] It can simulate the faulting and pulse effects of four single seismogenic faults on landslides: left-lateral strike-slip faults, right-lateral strike-slip faults, thrust faults, and normal faults. It can also simultaneously couple the faulting and pulse effects of complex seismogenic faults such as left-lateral strike-slip + thrust, left-lateral strike-slip + normal fault, right-lateral strike-slip + thrust, and right-lateral strike-slip + normal fault on landslides.
[0032] Compared to conventional fault slip experiment devices that can only apply uniform slip rates, this device can apply pulse slip rates with arbitrary complex combinations of frequencies and amplitudes.
[0033] Optionally, such as Figures 1 to 3 As shown, the model box system also includes model box side plates 3. Both ends of the side opening of the vertically movable model box 1 are connected to the model box side plates 3, and both ends of the side opening of the horizontally movable model box 2 are connected to the model box side plates 3.
[0034] Specifically, model box side plates 3 are welded to the left and right ends of the rear opening of the vertically staggered model box 1, and model box side plates 3 are welded to the left and right ends of the front opening of the horizontally staggered model box 2.
[0035] In this embodiment, the left rear end model box side plate 3 of the vertical displacement model box 1 is attached to the left front end model box side plate 3 of the horizontal displacement model box 2, and the right rear end model box side plate 3 of the vertical displacement model box 1 is attached to the right front end model box side plate 3 of the horizontal displacement model box 2. Therefore, when the vertical displacement model box 1 and the horizontal displacement model box 2 experience displacement during the simulation test, the model box side plates 3 can be used to prevent the slope model soil from collapsing to the outside of the vertical displacement model box 1 and the horizontal displacement model box 2.
[0036] Optionally, both the vertically movable model box 1 and the horizontally movable model box 2 include a base plate and three side plates, the side plates being made of square steel pipes and transparent acrylic sheets.
[0037] In this embodiment, the top and one side of the vertical displacement model box 1 are open, and the bottom plate and three side plates are firmly welded together as a whole. The side plates are mainly composed of square steel pipes and transparent acrylic sheets, which facilitates observation of the dynamic deformation and instability process of the ramp model in the model box. The top and one side of the horizontal displacement model box 2 are open, and the bottom plate and three side plates are firmly welded together as a whole. The side plates are mainly composed of square steel pipes and transparent acrylic sheets, which facilitates observation of the dynamic deformation and instability process of the ramp model in the model box.
[0038] Optionally, such as Figure 1 and Figure 3 As shown, the drive system also includes a vertical auxiliary actuator 5, which is connected to the vertically shifted model box 1 for transmission. The vertical auxiliary actuator 5 is used to provide a vertical auxiliary load to the vertically shifted model box 1.
[0039] Specifically, there are four vertical auxiliary actuators 5, distributed at the four corners of the vertically shifting model box 1, which are fixed to the bottom plate of the vertically shifting model box 1 with rigid bolts. The vertical auxiliary actuators 5 are hydraulically driven, with a designed thrust of 1 meganewton (MN), a cylinder diameter of 150mm, and a stroke of ±300mm. They are mainly linked with the high-thrust vertical actuators 4 to provide vertical auxiliary loads for the vertically shifting model box 1.
[0040] In this embodiment, four vertical auxiliary actuators 5 are used to act on the vertically displaced model box 1, which can ensure that the vertically displaced model box 1 runs stably in the vertical plane.
[0041] Optionally, such as Figure 1 and Figure 3 As shown, the earthquake landslide simulation test device for coupled fault slippage and pulse vibration also includes a foundation and reaction wall system. The drive system also includes a static pressure guide rail 7. The foundation and reaction wall system includes a slide rail rigid base 13. The lower part of the static pressure guide rail 7 is connected to the slide rail rigid base 13, and the upper part of the static pressure guide rail 7 is connected to the horizontal slippage model box 2 by a rigid bolt.
[0042] Specifically, there are two hydrostatic guide rails 7. The upper part is connected and fixed to the horizontally movable model box 2 with rigid bolts, and the lower part is connected to the rigid base 13 of the slide rail. The oil film thickness is 0.02~0.05mm, and the coefficient of friction is <0.001. The hydrostatic guide rail 7 may include a moving part and a guide rail surface. The moving part is connected to the horizontally movable model box 2, and the guide rail surface is connected to the rigid base 13 of the slide rail. The moving part slides relative to the guide rail surface, and the guide rail surface extends in the left and right direction. Furthermore, the lower parts of both hydrostatic guide rails 7 extend in the left and right direction.
[0043] In this embodiment, by setting up a static pressure guide rail 7, and utilizing the upper part of the static pressure guide rail 7 to slide horizontally to the lower part, the accuracy of the horizontally shifting model box 2's movement in the left and right directions can be improved, which helps to ensure the smooth sliding of the horizontally shifting model box 2. Secondly, by setting up a rigid base 13 for the slide rail, and using a reinforced concrete structure, cast in a deep underground foundation pit, with high-strength bolts pre-embedded inside, it is easy to fix and support the static pressure guide rail 7, and the static pressure guide rail 7 can also be raised to connect with the horizontally shifting model box 2.
[0044] Optionally, such as Figure 1 and Figure 3 As shown, the earthquake landslide simulation test device that couples fault slippage and pulse vibration also includes a control system. The control system includes a hydraulic pump station 8, a hydraulic servo control unit 9, a high-performance main controller 10, and a high-precision platform sensor module 11. The hydraulic pump station 8 includes multiple high-pressure oil pumps, which are connected to the high-thrust vertical actuator 4, the vertical auxiliary actuator 5, and the high-thrust horizontal actuator 6 through high-pressure pipelines. The hydraulic servo control unit 9 is used to adjust the oil flow rate of the hydraulic pump station 8; The high-performance main controller 10 is used to coordinate the actions of the high-thrust vertical actuator 4, the vertical auxiliary actuator 5, and the high-thrust horizontal actuator 6. The high-precision tabletop sensor module 11 is used to monitor the tabletop movement status in real time and feed it back to the high-performance main controller 10 to achieve closed-loop control.
[0045] In this embodiment, the hydraulic pump station 8 consists of six high-pressure oil pumps. The hydraulic pump station 8 is connected to the high-thrust vertical actuator 4, the vertical auxiliary actuator 5, and the high-thrust horizontal actuator 6 via high-pressure pipelines, providing power to these actuators via high-pressure oil. Furthermore, the hydraulic pump station 8 integrates a temperature control system, using a plate heat exchanger and a water-cooling device to cool the hydraulic oil in real time, preventing high temperatures from causing a decrease in control system efficiency.
[0046] The hydraulic servo control unit 9 mainly regulates the oil flow of the hydraulic pump station 8 through the electro-hydraulic servo valve and servo amplifier, thereby controlling the motion accuracy and response speed of the high-thrust vertical actuator 4, the vertical auxiliary actuator 5 and the high-thrust horizontal actuator 6, and adjusting the displacement, speed and force output of the high-thrust vertical actuator 4, the vertical auxiliary actuator 5 and the high-thrust horizontal actuator 6 in real time to achieve precise motion under long stroke.
[0047] The high-performance main controller 10 adopts an industrial-grade PLC architecture, receives velocity pulse input signals, calculates and outputs control commands through algorithms, coordinates the actions of the high-thrust vertical actuator 4, the vertical auxiliary actuator 5, and the high-thrust horizontal actuator 6, compensates for inertial hysteresis under heavy loads, and ensures the fidelity of the vibration waveform. The high-performance main controller 10 has the following built-in velocity pulse signal generation model: ; In the formula, V 0 For the amplitude of the error, ζ The attenuation coefficient is... i Δ represents the number of errors. t The interval time, T This is the fault cycle.
[0048] The high-precision tabletop sensor module 11 includes displacement, velocity, and acceleration sensors, which monitor the tabletop motion status in real time and feed back to the high-performance main controller 10 to achieve closed-loop control and ensure that the vibration parameters meet the requirements.
[0049] Optionally, such as Figures 1 to 3 As shown, the foundation and reaction wall system also includes a reaction wall 12, which is located at the left end of the slide rail rigid base 13, and the high-thrust horizontal actuator 6 is connected to the reaction wall 12.
[0050] In this embodiment, the reaction wall 12 is made of reinforced concrete (strength grade C30 or above), and high-strength bolts are pre-embedded inside to fix the high-thrust horizontal actuator 6, which is used to resist the huge reaction force generated by the high-thrust horizontal actuator 6.
[0051] Optionally, such as Figure 1 and Figure 3 As shown, the foundation and reaction wall system also includes a concrete foundation 14, which is located at the lower end of the high-thrust horizontal actuator 6 and the vertical auxiliary actuator 5. Both the high-thrust horizontal actuator 6 and the vertical auxiliary actuator 5 are connected to the concrete foundation 14.
[0052] In this embodiment, the concrete foundation 14 is a reinforced concrete structure, poured into a deep underground foundation pit, and has high-strength bolts pre-embedded inside to fix the high-thrust vertical actuator 4, which is used to resist the huge reaction force generated by the high-thrust vertical actuator 4.
[0053] Working principle of this invention embodiment: Step 1: Debug the hydraulic drive system of the model box. Perform system calibration on the stroke of the high-thrust vertical actuator 4, the vertical auxiliary actuator 5 and the high-thrust horizontal actuator 6, the hydraulic servo system, the initial oil level of the hydraulic cylinder and the control system, and calibrate the feedback value of the high-precision platform sensor module 11 to ensure that the vibration parameters meet the requirements. Step 2: Lay a foam board with a thickness of about 1 cm at the bottom of the vertical displacement model box 1 to approximate the absorbing boundary at the bottom of the model box, and attach a foam board with a thickness of about 1 cm to the front and back sides of the horizontal displacement model box 2 to approximate the non-reflective boundary condition of the horizontal displacement model box 2. Step 3: Determine the similarity ratio based on the dimensions of the landslide prototype and the vertical slip model box 1 and horizontal slip model box 2. Prepare the similar materials and proportions required for the slope model according to the similarity ratio, mix them evenly with a mixer, and then fill and compact them in layers into the vertical slip model box 1 and horizontal slip model box 2. During the filling process, embed acceleration sensors and stress sensors inside the slope model to monitor the dynamic response of the slope under seismic conditions. Step 4: After completing the ramp model, turn on the hydraulic pump station 8, hydraulic servo control unit 9, and high-performance main controller 10. The high-performance main controller 10 then generates velocity pulse waveforms of different frequencies, phases, and amplitudes required for the physical simulation using its built-in velocity pulse generator. ; In the formula, V 0 For the amplitude of the error, ζ The attenuation coefficient is... i Δ represents the number of errors. t The interval time, TThis is the fault cycle.
[0054] Step 5: The hydraulic pump station 8 and the hydraulic servo control unit 9 control the high-thrust vertical actuator 4, the vertical auxiliary actuator 5 and the high-thrust horizontal actuator 6 to generate corresponding slip loads and velocity pulse loads based on the generated velocity pulse waveforms. If only the seismic dynamic response of the slope under the action of the left-lateral strike-slip seismogenic fault is simulated, then only a positive velocity pulse load needs to be applied to the horizontal displacement model box 2 through the high-thrust horizontal actuator 6. If only the seismic dynamic response of the slope under the action of the right-lateral strike-slip seismogenic fault is simulated, then only a negative velocity pulse load needs to be applied to the horizontal displacement model box 2 through the high-thrust horizontal actuator 6. If only the seismic dynamic response of the slope under normal fault action is simulated, then only the negative velocity pulse load needs to be applied to the vertical displacement model box 1 through the high-thrust vertical actuator 4 and the vertical auxiliary actuator 5. If only the seismic dynamic response of the slope under the action of the reverse fault is simulated, then only the positive velocity pulse load needs to be applied to the vertical displacement model box 1 through the high thrust vertical actuator 4 and the vertical auxiliary actuator 5. If we want to simulate the seismic dynamic response of a slope under the action of a left-lateral strike-slip + reverse fault, we need to couple the high-thrust horizontal actuator 6 and the high-thrust vertical actuator 4 through the hydraulic servo control unit 9 and the high-performance main controller 10. The high-thrust horizontal actuator 6 applies a positive velocity pulse load to the horizontal displacement model box 2, and at the same time, the high-thrust vertical actuator 4 and the vertical auxiliary actuator 5 apply a positive velocity pulse load to the vertical displacement model box 1. If we want to simulate the seismic dynamic response of a slope under the action of a left-lateral strike-slip fault with a normal fault, we need to apply a positive velocity pulse load to the horizontal displacement model box 2 through the high-thrust horizontal actuator 6, and at the same time apply a negative velocity pulse load to the vertical displacement model box 1 through the high-thrust vertical actuator 4 and the vertical auxiliary actuator 5. If we want to simulate the seismic dynamic response of a slope under the action of a right-lateral strike-slip + reverse fault, then we need to apply a negative velocity pulse load to the horizontal displacement model box 2 through the high-thrust horizontal actuator 6, and at the same time apply a positive velocity pulse load to the vertical displacement model box 1 through the high-thrust vertical actuator 4 and the vertical auxiliary actuator 5. If we want to simulate the seismic dynamic response of a slope under the action of a right-lateral strike-slip fault with a normal fault, then we need to apply a negative velocity pulse load to the horizontal slip model box 2 through the high-thrust horizontal actuator 6, and at the same time apply a negative velocity pulse load to the vertical slip model box 1 through the high-thrust vertical actuator 4 and the vertical auxiliary actuator 5. Step six: After the fault load is applied, eliminate the cumulative displacement of the high-thrust vertical actuator 4, the vertical auxiliary actuator 5 and the high-thrust horizontal actuator 6 to bring them to the initial calibration position, and then repeat step five to carry out the next set of fault conditions. Step 7: After the test, monitor the slope's seismic response and the slope's stress changes and deformation failure by using buried acceleration and stress sensors. Step 8: When the ramp model test is completed, after the hydraulic oil pump temperature has cooled to a normal level, shut down the hydraulic pump station 8, the hydraulic servo control unit 9, and the high-performance main controller 10, and remove the ramp model.
[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A simulated earthquake-landslide test device that couples fault slippage and pulse vibration, characterized in that, The system includes a model box system and a drive system. The model box system includes a vertically swaying model box (1) and a horizontally swaying model box (2). The vertically swaying model box (1) has openings at the top and rear, and the horizontally swaying model box (2) has openings at the top and front. The rear opening of the vertically swaying model box (1) is opposite to the front opening of the horizontally swaying model box (2). The drive system includes a high-thrust vertical actuator (4) and a high-thrust horizontal actuator (6). The high-thrust vertical actuator (4) is driven to the vertically swaying model box (1) and is used to provide vertical velocity pulse-type swaying and vibration loads to the vertically swaying model box (1). The high-thrust horizontal actuator (6) is driven to the horizontally swaying model box (2) and is used to provide horizontal velocity pulse-type swaying and vibration loads to the horizontally swaying model box (2).
2. The earthquake-landslide simulation test device based on coupled fault slippage and pulse vibration as described in claim 1, characterized in that, The model box system also includes model box side plates (3). The side openings of the vertically movable model box (1) are connected to the model box side plates (3) at both ends, and the side openings of the horizontally movable model box (2) are connected to the model box side plates (3) at both ends.
3. The earthquake-landslide simulation test device based on coupled fault slippage and pulse vibration according to claim 1, characterized in that, Both the vertically swaying model box (1) and the horizontally swaying model box (2) include a base plate and three side plates, which are made of square steel pipes and transparent acrylic sheets.
4. The earthquake-landslide simulation test device based on coupled fault slippage and pulse vibration according to claim 1, characterized in that, The drive system also includes a vertical auxiliary actuator (5), which is connected to the vertically shifted model box (1) and is used to provide a vertical auxiliary load to the vertically shifted model box (1).
5. The earthquake-landslide simulation test device based on coupled fault slippage and pulse vibration according to claim 1, characterized in that, It also includes a foundation and reaction wall system. The drive system also includes a hydrostatic guide rail (7). The foundation and reaction wall system includes a slide rail rigid base (13). The lower part of the hydrostatic guide rail (7) is connected to the slide rail rigid base (13). The upper part of the hydrostatic guide rail (7) is connected to the horizontal displacement model box (2) by a rigid bolt.
6. The earthquake-landslide simulation test device for coupled fault slippage and pulse vibration according to claim 4, characterized in that, It also includes a control system, which includes a hydraulic pump station (8), a hydraulic servo control unit (9), a high-performance main controller (10), and a high-precision platform sensor module (11). The hydraulic pump station (8) includes multiple high-pressure oil pumps, which are connected to the high-thrust vertical actuator (4), the vertical auxiliary actuator (5), and the high-thrust horizontal actuator (6) through high-pressure pipelines. The hydraulic servo control unit (9) is used to adjust the oil flow rate of the hydraulic pump station (8); The high-performance main controller (10) is used to coordinate the actions of the high-thrust vertical actuator (4), the vertical auxiliary actuator (5), and the high-thrust horizontal actuator (6); The high-precision tabletop sensor module (11) is used to monitor the tabletop motion status in real time and feed it back to the high-performance main controller (10) to achieve closed-loop control.
7. The earthquake-landslide simulation test device for coupled fault slippage and pulse vibration according to claim 5, characterized in that, The foundation and reaction wall system also includes a reaction wall (12), which is located at the end of the slide rail rigid base (13), and the high-thrust horizontal actuator (6) is connected to the reaction wall (12).
8. The earthquake-landslide simulation test device for coupled fault slippage and pulse vibration according to claim 4, characterized in that, The foundation and reaction wall system also includes a concrete foundation (14), which is located at the lower end of the high-thrust horizontal actuator (6) and the vertical auxiliary actuator (5). Both the high-thrust horizontal actuator (6) and the vertical auxiliary actuator (5) are connected to the concrete foundation (14).