A vibration array test device and method for simulating complex dislocation-vibration coupling

Abstract

The present invention discloses a vibration table array test device for simulating complex dislocation-vibration coupling, comprising a main frame and a vibration table arranged at the lower part of the main frame, the vibration table comprising a vibration table bracket and a vibration table frame, a movable box and a fixed box arranged in the main frame, the movable box and the fixed box having open top surfaces, the opposite ends of the movable box and the fixed box being open ends, and a model box shear joint being arranged between the open end of the movable box and the open end of the fixed box. The present invention also discloses a vibration table array test method for simulating complex dislocation-vibration coupling. The present invention satisfies the requirements for simulating dislocation and seismic coupling, and provides a reference approach for disaster prevention and mitigation of tunnels across active faults in high-intensity earthquake zones.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel model testing, in particular to a vibration array testing device for simulating complex dislocation-vibration coupling, and also to a vibration array testing method for simulating complex dislocation-vibration coupling. Background Art

[0002] Active faults operate in a variety of ways, including single-plate or dual-plate, continuous, and intermittent slip. This potential activity primarily relates to periods of human activity, specifically referring to faults that have been active, are currently active, or may become active in the future, since the Quaternary Period, especially the Late Pleistocene. Numerous researchers have used model tests to investigate tunnels crossing active faults, but most existing model tests only consider single slips and fail to account for multi-angle slips and the impact of seismic motion.

[0003] According to incomplete statistics, since the 20th century, numerous cross-fault tunnels, both domestically and internationally, have been damaged by earthquakes. These tunnels, impacted by seismic pulses and complex faulting, have severely damaged the Daliang Tunnel, and tunnels near the Lenglongling Fault Zone have also experienced faulting failures. Research on complex fault-vibration coupling is currently limited to numerical simulation, precluding model testing for comparative studies. Therefore, developing a device capable of simulating complex fault-vibration coupling in tunnels is an urgent task, providing a reference for the seismic design of tunnels crossing active faults in high-intensity earthquake zones. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to provide a vibration array test device for simulating complex dislocation-vibration coupling, and also to provide a vibration array test method for simulating complex dislocation-vibration coupling.

[0005] The above-mentioned purpose of the present invention is achieved by the following technical means:

[0006] A vibration table array test device for simulating complex dislocation-vibration coupling includes a main frame and a vibration table arranged at the lower part of the main frame.

[0007] The vibration table includes a vibration table bracket and a vibration table frame.

[0008] The vibration table frame consists of interconnected transverse and longitudinal plates.

[0009] The actuator support steel plate is fixed to the bottom of the vibration table bracket. A first vertical hinge seat is provided at the bottom of the actuator support steel plate, and a second vertical hinge seat is provided on the horizontal plate. The two ends of the vertical actuator are hinged to the first vertical hinge seat and the second vertical hinge seat respectively.

[0010] The first horizontal hinge seat is fixed on the side of the vibration table bracket, the second horizontal hinge seat is fixed on the longitudinal plate, and the two ends of the horizontal actuator are hinged to the first horizontal hinge seat and the second horizontal hinge seat respectively.

[0011] As described above, the plane on which the top end of the vertical actuator rotates around the first vertical hinge seat is the first vertical plane, and the plane on which the bottom end of the vertical actuator rotates around the second vertical hinge seat is the second vertical plane. The first vertical plane is perpendicular to the second vertical plane.

[0012] As described above, the plane on which one end of the horizontal actuator rotates around the first horizontal hinge seat is located in the first vertical plane, and the plane on which the other end of the horizontal actuator rotates around the second horizontal hinge seat is located in the horizontal plane.

[0013] As mentioned above, the main frame is provided with a movable box and a fixed box.

[0014] The movable box body and the fixed box body have open top surfaces, the opposite ends of the movable box body and the fixed box body are open ends, and a model box shear seam is provided between the open end of the movable box body and the open end of the fixed box body.

[0015] As described above, the open end edge of the movable box is provided with a movable box shear seam baffle, and the open end edge of the fixed box is provided with a fixed box shear seam baffle, and a set distance is set between the movable box shear seam baffle and the fixed box shear seam baffle.

[0016] As described above, horizontal steel structures are provided on both sides of the fixed box body, and the bottom of the fixed box body is provided on the bottom surface of the main frame through a vertical steel structure, and the horizontal steel structure is against the inner wall of the side of the main frame.

[0017] As described above, vertical linear guide rails are provided on both sides of the movable box, the fixed portion of the vertical linear guide rails is provided on the side of the movable box, the sliding portion of the vertical linear guide rails is connected to the telescopic portion of the horizontal shift jack, and the fixed portion of the horizontal shift jack is connected to the inner wall of the side portion of the main frame.

[0018] A horizontal linear guide rail is provided at the bottom of the movable box body, a fixed portion of the horizontal linear guide rail is provided at the bottom of the movable box body, a sliding portion of the horizontal linear guide rail is connected to the telescopic portion of the vertical shift jack, and a fixed portion of the vertical shift jack is provided on the bottom surface of the main frame.

[0019] As described above, the telescopic direction of the telescopic portion of the horizontal shift jack is parallel to the sliding direction of the sliding portion of the horizontal linear guide rail, and the telescopic direction of the telescopic portion of the vertical shift jack is parallel to the sliding direction of the sliding portion of the vertical linear guide rail.

[0020] A vibration array test method for simulating complex dislocation-vibration coupling includes:

[0021] Tunnel fault model test:

[0022] A tunnel model is fabricated in a movable box and a fixed box. A displacement sensor for detecting the horizontal and vertical displacement of the movable box is installed in the main frame. The main frame with the tunnel model, the movable box, and the fixed box are integrally mounted on a vibration table. The horizontal and vertical displacement jacks are activated, and the test is conducted according to the test requirements.

[0023] Tunnel shaking table model test:

[0024] A tunnel model is made in the movable box and the fixed box, and displacement sensors for detecting the horizontal and vertical displacement of the movable box are installed in the main frame.

[0025] Weigh the main frame, movable box and fixed box with the tunnel model as a whole, install another debugging main frame of the same weight on the vibration table, debug the horizontal actuator and vertical actuator, move the debugging main frame away from the vibration table, install the main frame, movable box and fixed box with the tunnel model as a whole on the vibration table, turn on the horizontal actuator and vertical actuator, and conduct the test according to the test requirements.

[0026] Tunnel creep-strong earthquake model test:

[0027] A tunnel model is made in the movable box and the fixed box, and displacement sensors for detecting the horizontal and vertical displacement of the movable box are installed in the main frame.

[0028] The main frame, movable box and fixed box with the prepared tunnel model are weighed as a whole, another debugging main frame of the same weight is installed on the vibration table, the horizontal actuator and the vertical actuator are debugged, the debugging main frame is removed from the vibration table, the main frame, movable box and fixed box with the prepared tunnel model are installed as a whole on the vibration table, the horizontal shift jack, vertical shift jack, horizontal actuator and vertical actuator are turned on, and the test is carried out according to the test requirements.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention can consider tunnel complex fault model tests, tunnel vibration table tests, and tunnel creep-strong earthquake coupling model tests. Through the three aspects of vibration table array design, main frame design, and fault model box design, it meets the simulation of fault and seismic motion coupling, and provides a reference approach for disaster prevention and mitigation of tunnels across active faults in severe earthquake zones. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional schematic diagram of the device of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the vibration table frame of the present invention;

[0033] Figure 3 A schematic diagram of the three-dimensional structure of the movable box and the fixed box from perspective one;

[0034] Figure 4 A schematic diagram of the three-dimensional structure of the movable box and the fixed box from the second perspective;

[0035] Figure 5 It is a side view structural diagram of the movable box.

[0036] 1-Main frame; 2-Shaking table bracket; 3-Shaking table frame; 4-Vertical actuation module; 5-Horizontal actuation module; 6-Horizontal displacement jack; 7-Vertical linear guide; 8-Vertical displacement jack; 9-Horizontal linear guide; 10-Movable box; 11-Fixed box; 12-Vertical steel structure; 13-Horizontal steel structure; 14-Model box shear joint; 41-Actuator support steel plate; 42-First vertical hinge seat ;43-first vertical articulated seat shaft;44-second vertical articulated seat;45-second vertical articulated seat shaft;46-vertical actuator;51-first horizontal articulated seat;52-first horizontal articulated seat shaft;53-second horizontal articulated seat;54-second horizontal articulated seat shaft;55-horizontal actuator;71-vertical staggered pulley track;72-vertical staggered pulley group;91-horizontal staggered pulley track;92-horizontal staggered pulley group. Specific implementation methods

[0037] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below with reference to the embodiments. The embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0038] A vibration table array test device for simulating complex dislocation-vibration coupling comprises a main frame 1 and a vibration table arranged at the lower part of the main frame 1.

[0039] The vibration table includes a vibration table bracket 2, a vibration table frame 3, a vertical actuation module 4 and a horizontal actuation module (5), which serve as the main components of the vibration table array.

[0040] The vibration table bracket 2 is set at the bottom of the main frame 1, the vibration table frame 3 is fixed to the ground, the vertical actuation module 4 is connected to the vibration table bracket 2 and the vibration table frame 3 respectively, and the vertical actuation module 4 provides vertical actuation for the main frame 1. The horizontal actuation module (5) is connected to the vibration table bracket 2 and the vibration table frame 3 respectively, and the horizontal actuation module (5) provides horizontal actuation for the main frame 1.

[0041] The vibration table frame 3 comprises a transverse plate and a longitudinal plate connected to each other. The transverse plate provides a reaction force for the vertical actuation module 4, and the longitudinal plate provides a reaction force for the horizontal actuation module (5).

[0042] The vertical actuation module 4 includes an actuator support steel plate 41 , a first vertical hinge seat 42 , a first vertical hinge seat rotation shaft 43 , a second vertical hinge seat 44 , a second vertical hinge seat rotation shaft 45 , and a vertical actuator 46 .

[0043] The horizontal actuation module (5) comprises a first horizontal hinge seat 51, a first horizontal hinge seat rotation shaft 52, a second horizontal hinge seat 53, a second horizontal hinge seat rotation shaft 54, and a horizontal actuator 55.

[0044] Actuator support steel plate 41 is fixed to the bottom of the vibration table bracket 2. A first vertical hinge seat 42 is provided at the bottom of actuator support steel plate 41, and a second vertical hinge seat 44 is provided on the transverse plate. The ends of vertical actuator 46 are hinged to the first vertical hinge seat 42 and the second vertical hinge seat 44, respectively. When vertical actuator 46 is in operation, the vertical vibration force is transmitted to the main frame 1 through actuator support steel plate 41 and vibration table bracket 2.

[0045] In some embodiments, the vertical actuation modules 4 include a plurality of vertical actuation modules 4 , and the vertical actuation modules 4 are distributed in an array between the vibration table support 2 and the transverse plate.

[0046] A first horizontal hinge 51 is fixed to the side of the vibration table bracket 2, and a second horizontal hinge 53 is fixed to the longitudinal plate. The ends of the horizontal actuator 55 are respectively hinged to the first and second horizontal hinges 51 and 53. When the horizontal actuator 55 is in operation, it transmits the horizontal vibration force to the main frame 1 through the vibration table bracket 2.

[0047] In some embodiments, the horizontal actuation modules (5) include a plurality of modules, and the array is distributed between the vibration table bracket 2 and the longitudinal plate.

[0048] In some embodiments, there are multiple sets of vibration platforms, which are evenly arranged at the lower part of the main frame 1.

[0049] As a preferred solution, the top end of the vertical actuator 46 is hinged to the first vertical hinge seat 42, and the bottom end of the vertical actuator 46 is hinged to the second vertical hinge seat 44. The plane on which the top end of the vertical actuator 46 rotates around the first vertical hinge seat 42 is the first vertical plane, and the plane on which the bottom end of the vertical actuator 46 rotates around the second vertical hinge seat 44 is the second vertical plane. The first vertical plane and the second vertical plane are perpendicular to each other. The plane on which one end of the horizontal actuator 55 rotates around the first horizontal hinge seat 51 is located in the first vertical plane, and the plane on which the other end of the horizontal actuator 55 rotates around the second horizontal hinge seat 53 is located in the horizontal plane.

[0050] By setting the above-mentioned disturbance plane, the vibration effects of vertical and horizontal vibrations can be superimposed, avoiding vibration loss caused by rigid connection. In addition, the horizontal actuation module 5 and the vertical actuation module 4 do not conflict during operation, thereby protecting the safety of the equipment and users.

[0051] The main frame 1 is a rectangular parallelepiped frame, and a staggered mold box is provided in the main frame 1. The staggered mold box includes a movable box body 10 and a fixed box body 11. The movable box body 10 and the fixed box body 11 constitute an internal stuffing box. The movable box body 10 and the fixed box body 11 are both rectangular parallelepipeds. The movable box body 10 and the fixed box body 11 have open top surfaces. The opposite ends of the movable box body 10 and the fixed box body 11 are open ends. A mold box shear seam 14 is provided between the open end of the movable box body 10 and the open end of the fixed box body 11. The mold box shear seam 14 is provided so that the shearing action between the movable box body 10 and the fixed box body 11 can be completed smoothly without causing jamming.

[0052] As a preferred solution, a movable shear seam baffle is provided at the open end edge of the movable box 10, and a fixed shear seam baffle is provided at the open end edge of the fixed box 11. A set distance is provided between the movable shear seam baffle and the fixed shear seam baffle to prevent sand leakage during the shearing process, which would affect normal operation.

[0053] Horizontal steel structures 13 are provided on the sides of both sides of the fixed box body 11. The bottom of the fixed box body 11 is set on the bottom surface inside the main frame 1 through the vertical steel structure 12. One end of the horizontal steel structure 13 is fixed to the side of the fixed box body 11, and the other end is against the inner wall of the side of the main frame 1.

[0054] Vertical linear guide rails 7 are provided on the sides of both sides of the movable box 10. The fixed part of the vertical linear guide rail 7 is provided on the side of the movable box 10. The sliding part of the vertical linear guide rail 7 is connected to the telescopic part of the horizontal shift jack 6. The fixed part of the horizontal shift jack 6 is connected to the inner wall of the side of the main frame 1.

[0055] A horizontal linear guide rail 9 is provided at the bottom of the movable box 10, and the fixed part of the horizontal linear guide rail 9 is provided at the bottom of the movable box 10. The sliding part of the horizontal linear guide rail 9 is connected to the telescopic part of the vertical offset jack 8, and the fixed part of the vertical offset jack 8 is provided on the bottom surface inside the main frame 1.

[0056] The horizontal shift jack 6 provides horizontal shifting force for the movable box 10 relative to the fixed box 11. When the horizontal shift jack 6 pushes the movable box 10 to move horizontally, the sliding part of the horizontal linear guide 9 moves horizontally relative to the fixed part, that is, the telescopic direction of the telescopic part of the horizontal shift jack 6 is parallel to the sliding direction of the sliding part of the horizontal linear guide 9.

[0057] The vertical shift jack 8 provides a vertical shift force for the movable box 10 relative to the fixed box 11. When the vertical shift jack 8 pushes the movable box 10 to move vertically, the sliding part of the vertical linear guide 7 moves vertically relative to the fixed part, that is, the telescopic direction of the telescopic part of the vertical shift jack 8 is parallel to the sliding direction of the sliding part of the vertical linear guide 7.

[0058] When the telescopic portion of the horizontal shift jack 6 on one side of the movable housing 10 extends, the telescopic portion of the horizontal shift jack 6 on the other side of the movable housing 10 simultaneously retracts. Pulling the movable housing 10 achieves bidirectional force, and the horizontal linear guide 9 at the bottom of the movable housing 10 provides a path for horizontal shift of the movable housing 10. When vertical shift is required, the vertical shift jack 8 at the bottom of the movable housing 10 applies a load upward to push the movable housing 10, and the vertical linear guides 7 on both sides of the movable housing 10 provide a path for vertical shift of the movable housing 10. Vertical-horizontal coupled shifting can be achieved by switching between horizontal and vertical shifting.

[0059] The present invention can complete three types of earthquake damage simulations, including tunnel fault model test simulation, tunnel shaking table model test simulation, and tunnel creep-strong earthquake model test simulation.

[0060] Example 2:

[0061] A vibration array test method for simulating complex dislocation-vibration coupling, using the vibration array test device described in Example 1, comprising:

[0062] Tunnel fault model test:

[0063] First, the main frame 1, the movable box 10 and the fixed box 11 are moved to the ground as a whole by an overhead crane, a tunnel model is made in the movable box 10 and the fixed box 11, and a displacement sensor for detecting the horizontal and vertical displacements of the movable box 10 is installed in the main frame 1. The main frame 1, the movable box 10 and the fixed box 11 with the tunnel model are moved to the vibration table as a whole by an overhead crane, the horizontal displacement jack 6 and the vertical displacement jack 8 are turned on, and the test is carried out according to the test requirements.

[0064] Tunnel shaking table model test:

[0065] First, the main frame 1, movable box 10 and fixed box 11 are moved to the ground as a whole by an overhead crane, a tunnel model is made in the movable box 10 and the fixed box 11, and a displacement sensor for detecting the horizontal and vertical displacement of the movable box 10 is installed in the main frame 1.

[0066] The main frame 1, movable box 10 and fixed box 11 with the tunnel model are weighed as a whole, and another debugging main frame of the same weight is moved to the vibration table by an overhead crane. The horizontal actuator 55 and the vertical actuator 46 are modulated, and the driving acceleration of the horizontal actuator 55 and the vertical actuator 46 are configured. Then, the debugging main frame is moved away from the vibration table, and the main frame 1, movable box 10 and fixed box 11 with the tunnel model are moved to the vibration table as a whole by an overhead crane. The horizontal actuator 55 and the vertical actuator 46 are turned on, and the test is carried out according to the test requirements.

[0067] Tunnel creep-strong earthquake model test:

[0068] First, the main frame 1, movable box 10 and fixed box 11 are moved to the ground as a whole by an overhead crane, a tunnel is made in the movable box 10 and the fixed box 11, and a displacement sensor for detecting the horizontal and vertical displacement of the movable box 10 is installed in the main frame 1.

[0069] The main frame 1, movable box 10 and fixed box 11 with the tunnel model are weighed as a whole, and another debugging main frame of the same weight is moved to the vibration table by an overhead crane. The horizontal actuator 55 and the vertical actuator 46 are modulated and the driving acceleration of the horizontal actuator 55 and the vertical actuator 46 is configured. Then, the debugging main frame is moved away from the vibration table, and the main frame 1, movable box 10 and fixed box 11 with the tunnel model are moved to the vibration table as a whole by an overhead crane. The horizontal displacement jack 6, the vertical displacement jack 8, the horizontal actuator 55 and the vertical actuator 46 are turned on, and the test is carried out according to the test requirements.

[0070] It should be noted that the embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A vibration table array test method for simulating complex dislocation-vibration coupling, comprising a main frame (1) and a vibration table arranged at the lower part of the main frame (1), The vibration table includes a vibration table bracket (2) and a vibration table frame (3), and a vertical actuator (46) and a horizontal actuator (55) are provided between the vibration table bracket (2) and the vibration table frame (3). A movable box (10) and a fixed box (11) are provided in the main frame (1). The opposite ends of the movable box (10) and the fixed box (11) are open ends, and a mold box shear seam (14) is provided between the open ends of the movable box (10) and the fixed box (11). The side surfaces of both sides of the movable box (10) are respectively connected in a sliding manner to the telescopic portion of the horizontal displacement jack (6). The bottom of the movable box (10) is slidably connected to the telescopic portion of the vertical displacement jack (8). It is characterized by: The above method further includes: Tunnel fault model test: A tunnel model is made in a movable box (10) and a fixed box (11), a displacement sensor for detecting the horizontal displacement and vertical displacement of the movable box (10) is installed in a main frame (1), the main frame (1) with the tunnel model, the movable box (10) and the fixed box (11) are integrally mounted on a vibration table, the horizontal displacement jack (6) and the vertical displacement jack (8) are turned on, and a test is performed according to the test requirements; Tunnel shaking table model test: A tunnel model is made in the movable box (10) and the fixed box (11), and a displacement sensor for detecting the horizontal and vertical displacement of the movable box (10) is installed in the main frame (1). The main frame (1), movable box (10) and fixed box (11) with the prepared tunnel model are weighed as a whole, another debugging main frame of the same weight is installed on the vibration table, the horizontal actuator (55) and the vertical actuator (46) are debugged, the debugging main frame is removed from the vibration table, the main frame (1), movable box (10) and fixed box (11) with the prepared tunnel model are installed as a whole on the vibration table, the horizontal actuator (55) and the vertical actuator (46) are turned on, and the test is carried out according to the test requirements; Tunnel creep-strong earthquake model test: A tunnel model is made in the movable box (10) and the fixed box (11), and a displacement sensor for detecting the horizontal and vertical displacement of the movable box (10) is installed in the main frame (1). The main frame (1), movable box (10) and fixed box (11) with the prepared tunnel model are weighed as a whole, another debugging main frame of the same weight is installed on the vibration table, the horizontal actuator (55) and the vertical actuator (46) are debugged, the debugging main frame is removed from the vibration table, the main frame (1), movable box (10) and fixed box (11) with the prepared tunnel model are installed as a whole on the vibration table, the horizontal displacement jack (6), the vertical displacement jack (8), the horizontal actuator (55) and the vertical actuator (46) are turned on, and the test is carried out according to the test requirements.

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