An anti-seismic simulation test device and test method for a tunnel

Abstract

The present invention belongs to the technical field of tunnel seismic testing, and specifically relates to a tunnel seismic simulation testing device and a testing method. The tunnel seismic simulation testing device includes a base, on the top of which an electromagnetic vibration table is fixedly installed, and connecting plates are connected to both sides of the top of the electromagnetic vibration table; lifting components are installed at the four corners of the top of the electromagnetic vibration table, and a pressing component is arranged among the four lifting components; the pressing component includes a frame body and a nylon cloth bag, and the nylon cloth bag is fixed to the bottom of the frame body. Through the lifting components, the present invention can drive the pressing component to descend, so that the bottom of the nylon cloth bag can wrap around the surface of the tunnel model, and then crushed stone particles are filled into the cloth bag, thereby using the crushed stones evenly distributed along the outer wall of the tunnel model in the cloth bag to press the tunnel, which is beneficial to improving the uniformity of the pressure on the tunnel surface during the vibration test, and further beneficial to improving the accuracy of the test.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel seismic testing, and particularly to a tunnel seismic simulation testing device and a testing method. Background Technique

[0002] A tunnel is an engineering structure buried in the stratum and is a form of human utilization of underground space. The structure of a tunnel includes two parts: the main building and the auxiliary equipment. The main building consists of the tunnel body and the portal. The auxiliary equipment includes refuge bays, fire protection facilities, emergency communication, and drainage facilities. Long tunnels also have special ventilation and lighting equipment;

[0003] Earthquakes are mainly caused by the fracture or dislocation of rock layers inside the earth's crust. When the rock layers inside the earth's crust are compressed or stretched due to crustal movement and exceed the bearing strength of the rock layers, the rock layers will fracture or dislocate. During this process of rock layer fracture or dislocation, a large amount of energy will be released, forming seismic waves and spreading in all directions. When an earthquake occurs, it will cause damage to buildings. In order to improve the seismic performance of buildings, seismic simulation tests are required;

[0004] Before the construction of existing tunnels, in order to test the seismic effect of tunnels during use, simulation tests are often required, and corresponding simulation testing devices need to be used. Currently, during the dynamic simulation testing of tunnel seismic resistance, a tunnel model is often made of building materials, then fixed on a shaking table, and then pressure is applied to its surface, and vibration testing is carried out using the shaking table. However, during the actual testing process, the simulation reduction degree is low. Although multi-point pressure is applied to the tunnel surface during pressure application, the actual pressure on the tunnel is comprehensive, so the pressure application during vibration testing is inaccurate, which will affect the accuracy of the test. Therefore, new technical solutions need to be designed to solve this problem. Summary of the Invention

[0005] The purpose of the present invention is to provide a tunnel seismic simulation testing device and a testing method, which solve the problem that during the actual testing process in the background technique, the simulation reduction degree is low. Although multi-point pressure is applied to the tunnel surface during pressure application, the actual pressure on the tunnel is comprehensive, so the pressure application during vibration testing is inaccurate, which will affect the accuracy of the test.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A tunnel seismic simulation testing device includes a base, and an electromagnetic shaking table is fixedly installed on the top of the base. Both sides of the top of the electromagnetic shaking table are connected with connecting plates;

[0007] Lifting components are installed at the four corners of the top of the electromagnetic shaking table, and a pressure application component is arranged between the four lifting components;

[0008] The pressure - applying component includes a frame body and a nylon cloth bag, and the nylon cloth bag is fixed to the bottom of the frame body.

[0009] By adopting the above - mentioned technical solution, first, a tunnel model is pre - fabricated in advance, then the tunnel model and the connecting plate are connected. Then, the lifting component drives the pressure - applying component to descend, so that the nylon cloth bag can fit on the surface of the tunnel model, and the bottom of the nylon cloth bag evenly fits on the outer wall of the tunnel model. Then, crushed stone particles are filled into the nylon cloth bag, so that the crushed stone particles are evenly distributed in the nylon cloth bag, and thus the evenly distributed crushed stone exerts pressure on the tunnel model. Then, the electromagnetic vibration table is started to drive the tunnel model to vibrate, so as to realize the seismic resistance test of the tunnel model.

[0010] As a preferred embodiment of the present invention, the lifting component includes a vertical plate, the vertical plate is fixed to the top of the electromagnetic vibration table, a vertical groove is formed in the inner side wall of the vertical plate, a lead - screw motor is fixedly installed at the bottom of the inner cavity of the vertical groove, the outer end of the transmission shaft of the lead - screw motor is fixedly connected with a first lead screw, the outer end of the first lead screw is rotatably connected to the top of the inner cavity of the vertical groove, a first lead - screw slider adapted to the outer wall of the first lead screw is sleeved on the outer wall of the first lead screw, and the first lead - screw slider is connected to the frame body.

[0011] By adopting the above - mentioned technical solution, the lead - screw motor can drive the first lead screw to rotate, so as to drive the first lead - screw slider to lift, thereby realizing driving the frame body to lift, and further realizing driving the nylon cloth bag to lift, so as to realize driving the nylon cloth bag to fit on the outer wall of the tunnel model.

[0012] As a preferred embodiment of the present invention, a downward - pressing component is fixed to one side of the top of the base. The downward - pressing component includes a side plate, the top side wall of the side plate is fixedly connected with a top plate through a cross - plate, an electric push rod is fixedly installed at the middle of the top of the top plate, the push rod of the electric push rod movably penetrates through the top plate and is fixedly connected with a movable plate, a pressing plate is arranged on the lower side of the movable plate, springs are fixedly installed on the four sides of the top of the pressing plate, the tops of the springs are fixedly connected with the movable plate, and a vibration motor is fixedly installed at the middle of the top of the pressing plate.

[0013] By adopting the above - mentioned technical solution, when the crushed stone particles are introduced into the nylon cloth bag, the electric push rod drives the movable plate to descend, so that the pressing plate presses and limits the crushed stone particles in the nylon cloth bag. At the same time, the vibration motor can drive the pressing plate to vibrate, so as to compact the crushed stone, further improving the compactness of the crushed stone, which is beneficial to avoiding the jumping of the crushed stone in the nylon cloth bag during the vibration test, ensuring the fitting degree of the crushed stone, and further improving the accuracy of the test.

[0014] As a preferred embodiment of the present invention, a chute is provided in the middle of the top of the electromagnetic vibration table. A dual-axis motor is fixed in the middle of the inner cavity of the chute. Both ends of the dual-axis motor are fixedly connected with second lead screws. The outer ends of the second lead screws are rotatably connected to the inner wall of the chute. A second lead screw slider adapted to the outer wall of the second lead screw is sleeved. The top of the second lead screw slider is fixedly connected with a connecting plate.

[0015] By adopting the above technical solution, the dual-axis motor can drive the second lead screws on both sides to rotate, so as to drive the second lead screw sliders to slide, thereby adjusting the distance between the two connecting plates, so that it can adapt to models of different sizes for connection.

[0016] As a preferred embodiment of the present invention, limit rods are fixedly installed on both sides of the top of the movable plate. The limit rods movably penetrate through the top plate. The arrangement of the limit rods makes it convenient for the electric push rod to drive the movable plate to lift with high stability.

[0017] As a preferred embodiment of the present invention, a fixing ring is fixedly connected to the outer wall of the first lead screw slider. A positioning pin is fixed on the outer wall of the frame corresponding to the fixing ring. The frame and the first lead screw slider are connected by inserting the positioning pin into the fixing ring, so that the frame and the first lead screw slider can be easily separated.

[0018] As a preferred embodiment of the present invention, a synchronous controller is fixedly installed on the top of the base. The setting of the synchronous controller enables it to be electrically connected to the four lead screw motors, so as to synchronously control the four lead screw motors to lift synchronously.

[0019] As a preferred embodiment of the present invention, a plurality of uniformly distributed connecting blocks are fixedly installed on the top of the connecting plate, and connecting holes are provided in the connecting blocks.

[0020] The present invention also relates to a tunnel seismic simulation test method, which includes the following method steps:

[0021] S1: Connect the tunnel model to the connecting plate on the top of the electromagnetic vibration table, and install strain gauges, displacement sensors and acceleration sensors on the inner wall of the tunnel model;

[0022] S2: Use the lifting assembly to drive the frame and the nylon cloth bag to descend so that the nylon cloth bag fits on the surface of the tunnel model, and then fill the nylon cloth bag with gravel particles;

[0023] S3: When introducing the gravel particles into the nylon cloth bag, drive the movable plate to descend through the electric push rod, so that the pressing plate presses and limits the gravel particles in the nylon cloth bag. At the same time, use the vibration motor to drive the pressing plate to vibrate, compact the gravel particles, and after compaction, the pressing plate fits on the surface of the gravel particles;

[0024] S: Start the electromagnetic vibration table to generate vibrations. The electromagnetic vibration table drives the model to vibrate. During the vibration process, the strain gauge, displacement sensor, and acceleration sensor feed the monitored data back to the computer terminal for storage.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] Through the lifting component, the pressing component can be driven to descend, so that the bottom of the nylon cloth bag can wrap around the surface of the tunnel model. Then, gravel particles are filled into the cloth bag, and the gravel evenly distributed along the outer wall of the tunnel model in the cloth bag is used to press the tunnel, which is beneficial to improving the uniformity of the pressure on the tunnel surface during the vibration test, and thus beneficial to improving the accuracy of the test. At the same time, the nylon cloth bag is used to contain the gravel, which is beneficial to preventing the gravel from scattering during the vibration test, and thus beneficial to avoiding harm to the surrounding staff.

[0027] Through the pressing-down component, the gravel particles in the nylon cloth bag can be pressed and limited in a fitting manner, which is beneficial to preventing the gravel in the nylon cloth bag from bouncing during the vibration test, ensuring the fitting degree of the gravel, and thus further improving the accuracy of the test. At the same time, when the gravel is filled into the nylon cloth bag, the vibration motor can drive the pressing plate to vibrate, so that the gravel can be compacted, further improving the compactness of the gravel.

[0028] Through the biaxial motor, the second screw sliders on both sides can be driven to slide, so as to adjust the distance between the connecting plates on both sides, so that it can adapt to models of different sizes for connection. At the same time, the nylon cloth bag can be lifted and lowered under the drive of the lifting component to adapt to models of different sizes for fitting, thus improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects, and advantages of the present invention will become more apparent:

[0030] Figure 1 It is a schematic diagram of the overall structure of a tunnel seismic simulation test device of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the lifting component and the pressing component of a tunnel seismic simulation test device of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the electromagnetic vibration table of a tunnel seismic simulation test device of the present invention;

[0033] Figure 4 It is a schematic diagram of the connection structure between the movable plate and the pressing plate of a tunnel seismic simulation test device of the present invention;

[0034] Figure 5 Schematic diagram of signal transmission for a tunnel seismic simulation test device of the present invention.

[0035] In the figure:

[0036] 1. Base;

[0037] 2. Synchronous controller;

[0038] 3. Mounting hole;

[0039] 4. Electromagnetic vibration table; 41. Connecting plate; 42. Connecting block; 43. Biaxial motor; 44. Second lead screw; 45. Second lead screw slider;

[0040] 5. Lifting assembly; 51. Vertical plate; 52. Lead screw motor; 53. First lead screw; 54. First lead screw slider; 55. Fixed ring;

[0041] 6. Frame; 61. Nylon cloth bag; 62. Positioning pin;

[0042] 7. Side plate; 71. Horizontal plate; 72. Top plate; 73. Electric push rod; 74. Limit rod; 75. Movable plate; 76. Pressing plate; 77. Spring; 78. Vibration motor. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The models of the electrical appliances provided in the present invention are only for reference, and different models of electrical appliances with the same function can be replaced according to actual usage conditions.

[0046] Please refer to Figures 1-5, the present invention provides a technical solution: a tunnel seismic simulation test device, including a base 1, an electromagnetic vibration table 4 is fixedly installed on the top of the base 1, and connecting plates 41 are connected to both sides of the top of the electromagnetic vibration table 4. The electromagnetic vibration table 4 is used to provide a vibration environment for vibration simulation tests;

[0047] Lifting components 5 are installed at the four corners of the top of the electromagnetic vibration table 4, and a pressure application component is arranged between the four lifting components 5. The pressure application component is used to uniformly apply pressure to the surface of the tunnel model;

[0048] The pressure application component includes a frame body 6 and a nylon cloth bag 61, and the nylon cloth bag 61 is fixed to the bottom of the frame body 6;

[0049] It should be understood that during actual testing, first prefabricate the tunnel model in advance, then connect the tunnel model and the connecting plate 41, and then use the lifting component 5 to drive the pressure application component to descend, so that the nylon cloth bag 61 can fit on the surface of the tunnel model, and the bottom of the nylon cloth bag 61 evenly fits on the outer wall of the tunnel model. Then fill the nylon cloth bag 61 with gravel particles, so that the gravel particles are evenly distributed in the nylon cloth bag 61, so that the evenly distributed gravel presses on the tunnel model. Then start the electromagnetic vibration table 4 to drive the tunnel model to vibrate, so as to realize the seismic test of the tunnel model. At the same time, use the nylon cloth bag 61 to hold the gravel, which is beneficial to avoid the gravel from scattering during the vibration test, and thus is beneficial to avoid harm to the surrounding staff.

[0050] Specifically, it also includes strain gauges, displacement sensors and acceleration sensors. The signal output ends of the strain gauges, displacement sensors and acceleration sensors are connected to the signal input end of the computer terminal;

[0051] During testing, install the strain gauges, displacement sensors and acceleration sensors on the inner wall of the tunnel model. Thus, during the vibration test, various data of the tunnel model can be monitored by the strain gauges, displacement sensors and acceleration sensors and fed back to the computer terminal for storage.

[0052] Further, a plurality of evenly distributed connecting blocks 42 are fixed on the top of the connecting plate 41, and connecting holes are provided in the connecting blocks 42. The setting of the connecting holes makes it convenient to connect and fix with the tunnel model.

[0053] Furthermore, mounting holes 3 are provided at the four corners of the top of the base 1. The setting of the mounting holes 3 makes it convenient to install and fix the whole device.

[0054] Such as Figure 1 and 2As shown in the figure; the lifting component 5 includes a vertical plate 51, the vertical plate 51 is fixed to the top of the electromagnetic vibration table 4, a vertical groove is provided on the inner side wall of the vertical plate 51, a lead screw motor 52 is fixedly installed at the bottom of the inner cavity of the vertical groove, and the outer end of the transmission shaft of the lead screw motor 52 is fixedly connected to a first lead screw 53. The outer end of the first lead screw 53 is rotatably connected to the top of the inner cavity of the vertical groove. A matching first lead screw slider 54 is sleeved on the outer wall of the first lead screw 53, and the first lead screw slider 54 is connected to the frame 6;

[0055] It should be understood that the lead screw motor 52 can drive the first lead screw 53 to rotate, so as to drive the first lead screw slider 54 to lift, so as to drive the frame 6 to lift, and further drive the nylon cloth bag 61 to lift, so as to drive the nylon cloth bag 61 to fit against the outer wall of the tunnel model.

[0056] Furthermore, a fixing ring 55 is fixedly connected to the outer wall of the first lead screw slider 54, and a positioning pin 62 is fixed to the outer wall of the frame 6 corresponding to the fixing ring 55. The positioning pin 62 and the fixing ring 55 are inserted to realize the connection between the frame 6 and the first lead screw slider 54, so that the frame 6 and the first lead screw slider 54 are convenient to separate.

[0057] Furthermore, a synchronous controller 2 is fixedly installed on the top of the base 1. The setting of the synchronous controller 2 enables it to be electrically connected to the four lead screw motors 52, so as to synchronously control the four lead screw motors 52 to lift synchronously.

[0058] As Figure 1 and 3 shown in the figure; a chute is provided in the middle of the top of the electromagnetic vibration table 4, a double-shaft motor 43 is fixed in the middle of the inner cavity of the chute, and both ends of the double-shaft motor 43 are fixedly connected to a second lead screw 44. The outer end of the second lead screw 44 is rotatably connected to the inner wall of the chute. A matching second lead screw slider 45 is sleeved on the outer wall of the second lead screw 44, and the top of the second lead screw slider 45 is fixedly connected to the connecting plate 41;

[0059] The double-shaft motor 43 can drive the second lead screws 44 on both sides to rotate, so as to drive the second lead screw slider 45 to slide, so as to adjust the distance between the two connecting plates 41, so as to adapt to models of different sizes for connection, so as to improve the adaptability of the device.

[0060] As Figure 1 and 4As shown in the figure; on one side of the top of the base 1, a downward pressing assembly is fixedly installed. The downward pressing assembly includes a side plate 7. The top side wall of the side plate 7 is fixedly connected to a top plate 72 through a cross plate 71. In the middle of the top of the top plate 72, an electric push rod 73 is fixedly installed. The push rod of the electric push rod 73 movably penetrates through the top plate 72 and is fixedly connected to a movable plate 75. A pressing plate 76 is arranged below the movable plate 75. On the four sides of the top of the pressing plate 76, springs 77 are fixedly installed. The top of the springs 77 is fixedly connected to the movable plate 75. In the middle of the top of the pressing plate 76, a vibration motor 78 is fixedly installed.

[0061] When the crushed stone particles are introduced into the nylon cloth bag 61, the electric push rod 73 drives the movable plate 75 to descend, so that the pressing plate 76 presses and limits the crushed stone particles in the nylon cloth bag 61 in a fitting manner. At the same time, the vibration motor 78 is started. The vibration motor 78 can drive the pressing plate 76 to vibrate, so that the crushed stone can be compacted. And the springs 77 can amplify the vibration, so as to improve the compaction effect, further improve the compactness of the crushed stone, which is beneficial to avoid the jumping of the crushed stone in the nylon cloth bag 61 during the vibration test, ensure the fitting degree of the crushed stone, and further improve the accuracy of the test.

[0062] Furthermore, on both sides of the top of the movable plate 75, limiting rods 74 are fixedly installed. The limiting rods 74 movably penetrate through the top plate 72. The arrangement of the limiting rods 74 makes it convenient for the electric push rod 73 to drive the movable plate 75 to lift with high stability.

[0063] A tunnel seismic simulation test method is specifically implemented as follows:

[0064] S1: Connect the tunnel model to the connecting plate 41 on the top of the electromagnetic vibration table 4, and install strain gauges, displacement sensors and acceleration sensors on the inner wall of the tunnel model;

[0065] S2: Use the lifting assembly 5 to drive the frame 6 and the nylon cloth bag 61 to descend so that the nylon cloth bag 61 fits on the surface of the tunnel model, and then fill the nylon cloth bag 61 with crushed stone particles so that the crushed stone particles are filled in the nylon cloth bag 61;

[0066] S3: When the crushed stone particles are introduced into the nylon cloth bag 61, the electric push rod 73 drives the movable plate 75 to descend, so that the pressing plate 76 presses and limits the crushed stone particles in the nylon cloth bag 61 in a fitting manner. At the same time, the vibration motor 78 can drive the pressing plate 76 to vibrate to compact the crushed stone particles. After compaction, the pressing plate 76 fits on the surface of the crushed stone particles;

[0067] S4: Start the electromagnetic vibration table 4 to generate vibration. The electromagnetic vibration table 4 drives the model to vibrate. During the vibration process, the strain gauges, displacement sensors and acceleration sensors feed the monitoring data back to the computer terminal for storage.

[0068] In addition, all components included in a tunnel seismic simulation test device and test method of the present invention are common standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. At the idle place of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the adapted monitoring computer and power supply, are connected by wires. For the specific connection means, reference should be made to the sequence of operations among the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be given.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced by the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0070] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tunnel seismic simulation test device, comprising a base (1), characterized in that: The top of the base (1) is fixedly installed with an electromagnetic vibration table (4), and both sides of the top of the electromagnetic vibration table (4) are connected with connecting plates (41); Lifting components (5) are installed at the four corners of the top of the electromagnetic vibration table (4), and a pressing component is arranged among the four lifting components (5); The pressing component includes a frame body (6) and a nylon cloth bag (61), and the nylon cloth bag (61) is fixed to the bottom of the frame body (6); One side of the top of the base (1) is fixedly provided with a pressing-down component. The pressing-down component includes a side plate (7). The top side wall of the side plate (7) is fixedly connected with a top plate (72) through a cross plate (71). The middle of the top of the top plate (72) is fixedly provided with an electric push rod (73). The push rod of the electric push rod (73) movably penetrates through the top plate (72) and is fixedly connected with a movable plate (75). A pressing plate (76) is arranged below the movable plate (75). Springs (77) are fixedly installed on the four sides of the top of the pressing plate (76). The tops of the springs (77) are fixedly connected with the movable plate (75). A vibration motor (78) is fixedly installed in the middle of the top of the pressing plate (76); A chute is formed in the middle of the top of the electromagnetic vibration table (4). A double-shaft motor (43) is fixedly installed in the middle of the inner cavity of the chute. Both ends of the double-shaft motor (43) are fixedly connected with second lead screws (44). The outer ends of the second lead screws (44) are rotationally connected with the inner wall of the chute. Second lead screw sliders (45) are sleeved on the outer walls of the second lead screws (44). The tops of the second lead screw sliders (45) are fixedly connected with the connecting plates (41); The steps are as follows: S1: Connect the tunnel model with the connecting plates (41) on the top of the electromagnetic vibration table (4), and install strain gauges, displacement sensors and acceleration sensors on the inner wall of the tunnel model; S2: Drive the frame body (6) and the nylon cloth bag (61) to descend by using the lifting components (5) so that the nylon cloth bag (61) fits on the surface of the tunnel model, and then fill crushed stone particles into the nylon cloth bag (61); S3: When introducing the crushed stone particles into the nylon cloth bag (61), drive the movable plate (75) to descend through the electric push rod (73), so that the pressing plate (76) presses and limits the crushed stone particles in the nylon cloth bag (61). At the same time, the vibration motor (78) can drive the pressing plate (76) to vibrate to compact the crushed stone particles. After compaction, the pressing plate (76) fits on the surface of the crushed stone particles; S4: Start the electromagnetic vibration table (4) to generate vibration. The electromagnetic vibration table (4) drives the model to vibrate. During the vibration process, the strain gauges, displacement sensors and acceleration sensors feed the monitored data back to the computer terminal for storage.

2. The tunnel seismic simulation test device according to claim 1, characterized in that: The lifting assembly (5) includes a vertical plate (51), the vertical plate (51) is fixed to the top of the electromagnetic vibration table (4), a vertical groove is formed in the inner side wall of the vertical plate (51), a lead screw motor (52) is fixedly installed at the bottom of the inner cavity of the vertical groove, the outer end of the transmission shaft of the lead screw motor (52) is fixedly connected with a first lead screw (53), the outer end of the first lead screw (53) is rotatably connected to the top of the inner cavity of the vertical groove, a first lead screw slider (54) adapted to the outer wall of the first lead screw (53) is sleeved, and the first lead screw slider (54) is connected to the frame (6).

3. The tunnel seismic simulation test device according to claim 1, characterized in that: Limit rods (74) are fixed on both sides of the top of the movable plate (75), and the limit rods (74) movably penetrate through the top plate (72).

4. A tunnel seismic simulation test device according to claim 2, characterized in that: A fixed ring (55) is fixedly connected to the outer wall of the first lead screw slider (54), and a positioning pin (62) is fixed to the outer wall of the frame (6) corresponding to the fixed ring (55).

5. The tunnel seismic simulation test device according to claim 2, characterized in that: A synchronous controller (2) is fixedly installed on the top of the base (1).

6. The tunnel seismic simulation test device according to claim 1, characterized in that: A plurality of uniformly distributed connection blocks (42) are fixed on the top of the connecting plate (41), and connection holes are formed in the connection blocks (42).

7. The tunnel seismic simulation test device according to claim 1, characterized in that: Mounting holes (3) are formed at the four corners of the top of the base (1).

Images