A kind of building structure earthquake resistance simulation detection device

Abstract

The invention relates to the field of vibration testing technology, and discloses a building structure seismic simulation detection device, comprising a box body and a placement plate arranged above the box body for loading a modeling structure model, and also comprising: a sliding plate, which is arranged on the top of the box body for sliding left and right, and covers a top opening opened on the top of the box body; a lifting plate, which is fixedly installed on the bottom of the placement plate, and extends into the box body after passing through a lifting groove and the top opening opened on the sliding plate; a supporting spring, which is fixedly arranged between the bottom of the placement plate and the sliding plate; the building structure seismic simulation detection device, through the horizontal movement of the moving plate in the box body, can make the placement plate used for loading the modeling structure model generate up and down, left and right, and up and down and left and right shaking in sequence, so as to truly simulate the longitudinal wave, transverse wave and surface wave when an earthquake occurs, avoid the problem that the detection structure is not representative due to the single vibration direction, and improve the accuracy of seismic detection of the building structure model.

Description

Technical Field

[0001] The invention relates to the technical field of vibration testing, in particular to a building structure earthquake-resistant simulation detection device. Background Art

[0002] The seismic resistance of a building structure is one of the key indicators for evaluating its performance. In order to ensure the safety of a building, the seismic resistance of the building structure must be fully verified during the design phase. A commonly used verification method is to load the building structure into an earthquake vibration simulation device to simulate earthquake vibrations to test whether the seismic resistance of the building structure is qualified.

[0003] For example, in the invention patent with the Chinese patent announcement number: CN115575067A, a seismic test device for building structures is provided. In the above device, although irregular vibration frequencies can be provided through the arrangement of structures such as impact rods and annular blocks, it is found that there are still certain shortcomings in actual applications, such as:

[0004] For earthquakes, the main factor causing ground vibration is seismic waves, which are, in order of arrival time, longitudinal waves, transverse waves and surface waves. Among them, longitudinal waves make the building structure shake up and down, transverse waves make the building structure shake horizontally left and right, and surface waves make the building structure shake up and down and left and right. However, the above-mentioned seismic test equipment can only simulate the vibration caused by transverse waves, and cannot simulate the vibration caused by longitudinal waves and surface waves, let alone simulate the real earthquake situation in a full cycle. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a building structure seismic simulation detection device, which has the advantage of being able to simulate real earthquake conditions in a full cycle.

[0007] In order to achieve the above-mentioned purpose of being able to simulate the real earthquake situation in the whole cycle, the present invention provides the following technical solutions: a building structure seismic simulation detection device, including a box body and a placement plate arranged above the box body for loading a model of a modeling structure, and also including:

[0008] A sliding plate is arranged on the top of the box body for sliding left and right, and covers a top opening on the top of the box body;

[0009] The lifting plate is fixedly installed at the bottom of the placement plate, and extends into the box body after passing through the lifting groove and the top opening provided on the sliding plate;

[0010] A supporting spring is fixedly arranged between the bottom of the placing plate and the sliding plate;

[0011] The push plate is movably arranged in the box body, and a slope surface is formed on the top. The sliding plate is provided with a slope groove coupled with the slope surface.

[0012] The moving plate is movably arranged in the box body to the left and right, and is used to push the lifting plate and push the plate to move up.

[0013] As a preferred technical solution of the present invention, baffle bars are fixedly installed on both sides of the jacking plate.

[0014] As a preferred technical solution of the present invention, limit plates are fixedly installed on both the front and rear sides of the push plate, and the limit plates are movably arranged in limit grooves, and the limit grooves are opened on the inner wall of the box body.

[0015] As a preferred technical solution of the present invention, side plates are fixedly installed on both sides of the top of the box body, and side support springs are fixedly arranged between the ends of the sliding plate and the side plates.

[0016] As a preferred technical solution of the present invention, with the middle of the box as the center, two groups of lifting plates are symmetrically arranged on both sides of the bottom of the placement plate, and pushing plates are staggered between the two groups of lifting plates. In addition, pushing plates are also evenly arranged in the middle of the box.

[0017] As a preferred technical solution of the present invention, the pushing plate interlaced with the lifting plate is composed of a plate body and a tail plate, the top of the tail plate is fixedly connected to the inner plate by a connecting rod, the inner plate is movably arranged in a plate cavity opened in the plate body, and an electromagnet is fixedly installed on the inner bottom wall of the plate cavity.

[0018] As a preferred technical solution of the present invention, it also includes two groups of triggers, which are fixedly installed on the left and right inner walls of the box respectively and can be triggered by a movable plate. The output end of the trigger is electrically connected to a controller, and the output end of the controller is electrically connected to the input end of the electromagnet.

[0019] As a preferred technical solution of the present invention, a square groove is formed through the movable plate, a nut is slidably arranged in the square groove, the nut is threadedly connected to the screw rod, the screw rod is rotatably arranged in the box body and driven by a driving motor.

[0020] As a preferred technical solution of the present invention, a side cabinet is fixedly installed on the side wall of the box body, a vertical shaft is rotatably arranged in the side cabinet, and a transmission is used between the vertical shaft and the screw rod;

[0021] The top end of the vertical shaft extends to the outside of the side cabinet and is fixedly connected with a fan blade.

[0022] As a preferred technical solution of the present invention, it also includes a water distribution pipe, which is horizontally arranged above the placement plate and is used for spraying clean water to simulate rainwater.

[0023] Compared with the prior art, the present invention provides a building structure seismic simulation detection device, which has the following beneficial effects:

[0024] 1. The building structure seismic simulation detection device can make the placement plate used for loading the modeling structure model shake up and down, left and right, up and down and left and right in sequence through the horizontal movement of the moving plate in the box, truly simulating the longitudinal waves, transverse waves and surface waves when an earthquake occurs, avoiding the problem of unrepresentativeness of the detection structure due to a single vibration direction, and improving the accuracy of seismic detection of the building structure model.

[0025] 2. The building structure seismic simulation detection device, the pushing plate interlaced with the jacking plate is composed of a plate body and a tail plate. The tail plate can control whether it can move upward relative to the plate body by the power supply of the electromagnet, so that no matter the moving plate moves from left to right or from right to left, it can make the placement plate shake up and down, left and right, up and down, left and right, and so on.

[0026] 3. The building structure seismic simulation detection device can blow air to the building structure model through the fan blades and spray clean water to simulate rain through the water pipes, so as to detect the seismic resistance of the modeled structure model in the natural environment, thereby improving the comprehensiveness and accuracy of the detection experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 3 It is a cross-sectional view of the box body of the present invention;

[0030] Figure 4 It is an enlarged schematic diagram of the jacking plate part of the present invention;

[0031] Figure 5 It is an enlarged schematic diagram of the push plate part of the present invention;

[0032] Figure 6 A cross-sectional view of a push plate portion of the present invention;

[0033] Figure 7 It is an enlarged schematic diagram of the movable plate part of the present invention;

[0034] Figure 8 It is a three-dimensional schematic diagram of the overall structure in another embodiment of the present invention;

[0035] Fig. 9 A cross-sectional view of a side cabinet portion in another embodiment of the present invention;

[0036] Fig.10 It is a cross-sectional view of a vertical cylinder portion in another embodiment of the present invention.

[0037] In the figure: 1, box body; 2, placement plate; 3, support spring; 4, lifting plate; 5, moving plate; 6, sliding plate; 7, side plate; 8, side support spring; 9, lifting slot; 10, top opening; 11, stop bar; 12, push plate; 1201, plate body; 1202, tail plate; 1203, connecting rod; 1204, inner plate; 1205, plate cavity; 1206, electromagnet; 1207, limit rod; 13, slope surface; 14, slope slot; 15, limit plate; 16, trigger; 17, square slot; 18, nut; 19, screw rod; 20, drive motor; 21, nut; 22, threaded rod; 23, rod slot; 24, side cabinet; 25, vertical shaft; 26, active bevel gear; 27, driven bevel gear; 28, fan blade; 29, connecting frame; 30, vertical cylinder; 31, side cylinder; 32, piston; 33, eccentric wheel; 34, water inlet pipe; 35, water tank; 36, water distribution pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0039] See also Figure 1-Figure 6 , a building structure seismic simulation detection device, comprising a box body 1 and a placement plate 2 arranged above the box body 1 for loading a modeling structure model, a clamp can be arranged on the placement plate 2, and the modeling structure model can be fixed by the clamp, or it can be fixed by bolts or the like, which is not limited in this embodiment;

[0040] like Figure 2 As shown, a sliding plate 6 is provided on the top of the box body 1 to slide left and right, and the sliding plate 6 can cover the top opening 10 opened on the top of the box body 1, and the lifting plate 4 is fixedly installed on the bottom of the placement plate 2, and after passing through the lifting groove 9 and the top opening 10 opened on the sliding plate 6, it extends into the box body 1. In addition, a supporting spring 3 is fixedly provided between the bottom of the placement plate 2 and the sliding plate 6;

[0041] Thus, by pushing up the lifting plate 4, the placement plate 2 can be pushed upward to simulate the up and down vibration of the longitudinal wave, and the support spring 3 will be stretched at this time;

[0042] In order to limit the lowest position of the lifting plate 4, as Figure 4As shown, blocking bars 11 can be fixedly installed on both sides of the lifting plate 4. The lifting plate 4 can be limited by blocking the blocking bars 11 by the sliding plate 6, thereby limiting the lowest position of the lifting plate 4 and the placement plate 2.

[0043] like Figure 3 As shown, a push plate 12 is movably arranged up and down in the box body 1, and a slope surface 13 is formed on the top of the push plate 12, and a slope groove 14 coupled with the slope surface 13 is opened on the sliding plate 6. Therefore, when the push plate 12 moves up, the sliding plate 6 can be pushed to move left through the coupling of the slope surface 13 and the slope groove 14. Side plates 7 are fixedly installed on both sides of the top of the box body 1, and side support springs 8 are fixedly arranged between the ends of the sliding plate 6 and the side plates 7. When the sliding plate 6 moves to the left, one end thereof will compress the side support spring 8 and the other end will stretch the side support spring 8. Then, the sliding plate 6 will be reset under the action of the side support spring 8, thereby completing the left and right shaking to simulate the transverse wave during an earthquake.

[0044] like Figure 5 As shown, limit plates 15 are fixedly installed on both the front and rear sides of the push plate 12. The limit plates 15 are movably arranged in the limit grooves. The limit grooves are provided on the inner wall of the box body 1. By sliding the limit plates 15 in the limit grooves, on the one hand, the up and down movement of the push plate 12 can be made more stable, and on the other hand, the lowest moving position of the push plate 12 can be limited.

[0045] like Figure 2 As shown, a movable plate 5 is movably arranged left and right in the box body 1, and is used for pushing the lifting plate 4 and the pushing plate 12 to move upward. Specifically, the top of the movable plate 5 is an arc surface, and the bottoms of the lifting plate 4 and the pushing plate 12 are also arc surfaces. In this way, when the movable plate 5 moves left and right, the lifting plate 4 and the pushing plate 12 can be pushed upward by pushing the arc surface. When the lifting plate 4 moves upward, it can drive the placement plate 2 to shake up and down to simulate the longitudinal wave of the earthquake. When the pushing plate 12 moves upward, it can drive the sliding plate 6, the lifting plate 4 and the placement plate 2 to shake left and right to simulate the transverse wave of the earthquake.

[0046] In this embodiment, with the middle of the box body 1 as the center, two groups of lifting plates 4 are symmetrically arranged on both sides of the bottom of the placement plate 2, and between the two groups of lifting plates 4, push plates 12 are staggered. In addition, push plates 12 are also evenly arranged in the middle of the box body 1;

[0047] In addition, if Figure 3As shown, the push plate 12 interlaced with the lifting plate 4 is composed of a plate body 1201 and a tail plate 1202. The top of the tail plate 1202 is fixedly connected to an inner plate 1204 through a connecting rod 1203. The inner plate 1204 is movably arranged in a plate cavity 1205 opened in the plate body 1201. An electromagnet 1206 is fixedly installed on the inner bottom wall of the plate cavity 1205. The electromagnet 1206 can adsorb the inner plate 1204 when it is energized. A limit rod 1207 is also fixedly installed on the top of the tail plate 1202, and the limit rod 1207 is movably inserted in the plate body 1201.

[0048] When the moving plate 5 needs to move from left to right, the electromagnet 1206 in the left plate cavity 1205 can be controlled to be powered off, and the electromagnet 1206 in the right plate cavity 1205 can be powered on. In this way, when the moving plate 5 moves from left to right, the electromagnet 1206 on the left push plate 12 is powered off, so when the tail plate 1202 is squeezed, it can move up relative to the plate body 1201, and the plate body 1201 itself does not move up;

[0049] Furthermore, the first one-third section of the movement of the moving plate 5 from left to right will only push the lifting plate 4 to move upward, causing the placement plate 2 to shake up and down, simulating the longitudinal wave of the earthquake; the first one-third section of the movement of the moving plate 5 from left to right will only cause the pushing plate 12 to move upward, causing the placement plate 2 to shake left and right, simulating the transverse wave of the earthquake; in the last one-third section of the movement of the moving plate 5 from left to right, since the electromagnet 1206 on the right side is in the energized state, the tail plate 1202 cannot move upward relative to the plate body 1201, and further, the movement of the moving plate 5 will push the lifting plate 4 and the pushing plate 12, causing the placement plate 2 to shake up and down and left and right, simulating the surface wave of the earthquake;

[0050] On the contrary, when the movable plate 5 needs to move from right to left, similarly, the electromagnet 1206 in the left plate cavity 1205 is controlled to be energized, and the electromagnet 1206 in the right plate cavity 1205 is controlled to be deenergized.

[0051] Thus, in this embodiment, by controlling the on and off of the electromagnet 1206, the movable plate 5 can move from left to right or from right to left, and the placing plate 2 can be shaken up and down, left and right, and up and down and left and right in sequence, simulating a real earthquake situation.

[0052] In this embodiment, by horizontally moving the movable plate 5 in the box 1, the placement plate 2 used to load the modeling structure model can be caused to shake up and down, left and right, and up and down and left and right in sequence, truly simulating the longitudinal waves, transverse waves and surface waves during an earthquake, avoiding the problem of unrepresentative detection structure due to a single vibration direction, and improving the accuracy of seismic detection of building structure models.

[0053] like Figure 3As shown, two sets of triggers 16 are also provided, which are fixedly mounted on the left and right inner walls of the box body 1, respectively, and can be triggered by the movable plate 5. The trigger 16 can be a micro switch or a pressure sensor. The output end of the trigger 16 is electrically connected to the controller, and the output end of the controller is electrically connected to the input end of the electromagnet 1206.

[0054] When the moving plate 5 triggers the trigger 16 on the left, it means that the moving plate 5 will move from left to right. At this time, the controller controls the electromagnet 1206 on the left to be powered off and the electromagnet 1206 on the right to be powered on.

[0055] When the moving plate 5 triggers the trigger 16 on the right, it means that the moving plate 5 will move from right to left. At this time, the controller controls the electromagnet 1206 on the left to be energized and the electromagnet 1206 on the right to be deenergized. It is more automated and intelligent and does not require manual control. Example

[0056] See also Figure 7 On the basis of the first embodiment, in this embodiment, a square groove 17 is provided through the movable plate 5, a nut 18 is provided in the square groove 17 for sliding up and down, the nut 18 is threadedly connected to the screw rod 19, the screw rod 19 is rotatably provided in the box body 1, and is driven by the driving motor 20;

[0057] The driving motor 20 drives the screw rod 19 to rotate, and the rotation of the screw rod 19 drives the nut 18 connected to the outer wall of the screw rod 19 to move left and right. The left and right movement of the nut 18 can drive the movable plate 5 to move left and right.

[0058] Furthermore, a nut 21 is fixedly provided on the bottom wall of the square groove 17, a threaded rod 22 is connected to the inner thread of the nut 21, the top end of the threaded rod 22 is rotatably connected to the nut 18, and the bottom end is connected to a knob, and a rod groove 23 for moving the knob is opened on the inner bottom wall of the box body 1;

[0059] By turning the threaded rod 22 with a knob, the position of the nut 21 can be adjusted, thereby adjusting the up and down position of the movable plate 5. When the movable plate 5 is adjusted higher, the lifting plate 4 and the pushing plate 12 are lifted higher when it moves, thereby controlling the vibration amplitude of the placement plate 2. The higher it is adjusted, the greater the amplitude. Conversely, the lower it is adjusted, the smaller the amplitude. During the test, the experimenter can control it according to the needs. Example

[0060] See also Figure 8-Figure 10On the basis of the first or second embodiment, in this embodiment, a side cabinet 24 is fixedly installed on the left side of the box body 1, and a vertical shaft 25 is rotatably arranged in the side cabinet 24. The vertical shaft 25 and the screw rod 19 are transmitted through a transmission. Specifically, the transmission includes a driving bevel gear 26 and a driven bevel gear 27. The end of the screw rod 19 extends into the side cabinet 24 and is fixedly connected with the driving bevel gear 26. The outer wall of the driving bevel gear 26 is meshed with the driven bevel gear 27. The driven bevel gear 27 is fixedly installed on the vertical shaft 25. Therefore, when the screw rod 19 rotates, the vertical shaft 25 can be synchronously driven to rotate through the transmission;

[0061] like Figure 8 As shown, the top end of the vertical shaft 25 extends to the outside of the side cabinet 24 and is fixedly connected with a fan blade 28. When the screw 19 rotates to drive the movable plate 5 to move left and right to simulate an earthquake, the fan blade 28 can be synchronously driven to rotate through the vertical shaft 25. The fan blade 28 can blow air to the building structure model. There is no need to set up an additional fan to simulate the wind force in nature, which saves energy and improves the accuracy of the experiment.

[0062] In this embodiment, a water distribution pipe 36 is also arranged above the placement plate 2, and the water distribution pipe 36 is used to spray clean water to simulate rain. In actual application, wind can be blown to the building structure model through the fan blades 28, and clean water can be sprayed through the water distribution pipe 36 to simulate rain, so that the seismic resistance of the modeled structure model in the natural environment can be tested, thereby improving the comprehensiveness and accuracy of the detection experiment.

[0063] The automatic spraying of the water distribution pipe 36 can also be achieved by rotating the vertical shaft 25, specifically, as Fig. 9 and Fig.10 As shown, the side cabinet 24 is connected to a vertical cylinder 30 through a connecting frame 29, a water tank 35 is fixedly installed on the top of the vertical cylinder 30, and the top end of the vertical shaft 25 extends into the vertical cylinder 30 and is fixedly installed with an eccentric wheel 33;

[0064] A side tube 31 is also connected to the side of the vertical tube 30. A piston 32 is movably arranged in the side tube 31. The piston 32 is supported by a transverse spring. When the eccentric wheel 33 rotates, the piston 32 can be pushed cyclically. Fig.10 As shown, one side of the side tube 31 is connected to the water tank 35 through a water inlet pipe 34, and a one-way water inlet valve is provided on the water inlet pipe 34. A water distribution pipe 36 is also connected to the side tube 31, and a one-way water outlet valve is provided on the water distribution pipe 36. When the piston 32 moves to the right, the water in the side tube 31 can be transported to the water distribution pipe 36 and then sprayed out through the nozzle on the water distribution pipe 36. When the piston 32 moves to the left, the water in the water tank 35 can be sucked into the side tube 31 through the water inlet pipe 34.

[0065] Therefore, in this embodiment, when the placement plate 2 is simulating an earthquake, the wind blades 28 can automatically blow air to the building structure model, and the water pipes 36 can automatically spray clean water to simulate rain. The detection scenario is more comprehensive and realistic, and the earthquake resistance of the building structure model under severe weather conditions can be evaluated.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A building structure seismic simulation detection device, comprising a box (1) and a placement plate (2) arranged above the box (1) for loading a model of a modeling structure, characterized in that: Also includes: A sliding plate (6) is slidably disposed on the top of the box body (1) and covers a top opening (10) opened on the top of the box body (1); A lifting plate (4) is fixedly mounted on the bottom of the placement plate (2), passes through a lifting groove (9) and a top opening (10) provided on the sliding plate (6), and then extends into the box body (1); A support spring (3) fixedly disposed between the bottom of the placement plate (2) and the sliding plate (6); A push plate (12) is movably arranged in the box body (1) up and down, and has a slope surface (13) formed on the top; and a slope groove (14) coupled to the slope surface (13) is formed on the sliding plate (6); A movable plate (5) is movably arranged in the box body (1) to push the lifting plate (4) and the pushing plate (12) upward; By pushing up the lifting plate (4), the placement plate (2) can be pushed upward to simulate the up and down vibration of longitudinal waves, and the support spring (3) will be stretched; Side plates (7) are fixedly mounted on both sides of the top of the box body (1), and side support springs (8) are fixedly arranged between the ends of the sliding plate (6) and the side plates (7); When the push plate (12) moves upward, the sliding plate (6) can be pushed to move leftward through the coupling of the slope surface (13) and the slope groove (14). When the sliding plate (6) moves leftward, one end of the sliding plate will compress the side support spring (8) and the other end will stretch the side support spring (8). Then, the sliding plate (6) will be reset under the action of the side support spring (8), thereby completing the left-right shaking to simulate the transverse wave during the earthquake. With the middle of the box body (1) as the center, two groups of lifting plates (4) are symmetrically arranged on both sides of the bottom of the placement plate (2), and pushing plates (12) are staggered between the two groups of lifting plates (4). In addition, pushing plates (12) are also evenly arranged in the middle of the box body (1); The push plate (12) interlaced with the lifting plate (4) is composed of a plate body (1201) and a tail plate (1202); the top of the tail plate (1202) is fixedly connected to an inner plate (1204) via a connecting rod (1203); the inner plate (1204) is movably arranged in a plate cavity (1205) opened in the plate body (1201); an electromagnet (1206) is fixedly installed on the inner bottom wall of the plate cavity (1205); the electromagnet (1206) can adsorb the inner plate (1204) when energized; a limit rod (1207) is also fixedly installed on the top of the tail plate (1202); the limit rod (1207) is movably inserted in the plate body (1201); When the movable plate (5) needs to move from left to right, the electromagnet (1206) in the plate cavity (1205) on the left side can be controlled to be powered off, and the electromagnet (1206) in the plate cavity (1205) on the right side can be powered on. In this way, when the movable plate (5) moves from left to right, the electromagnet (1206) on the left side of the push plate (12) is powered off, so when the tail plate (1202) is squeezed, it can move upward relative to the plate body (1201), and the plate body (1201) itself will not move upward; Furthermore, the first third of the movement of the movable plate (5) from left to right will only push the lifting plate (4) upward, causing the placement plate (2) to shake up and down, simulating the longitudinal wave of an earthquake; the middle third of the movement of the movable plate (5) from left to right will only push the pushing plate (12) upward, causing the placement plate (2) to shake left and right, simulating the transverse wave of an earthquake; and the last third of the movement of the movable plate (5) from left to right, because the electromagnet (1206) on the right side is in an energized state, the tail plate (1202) cannot move upward relative to the plate body (1201), and thus, the movement of the movable plate (5) will push the lifting plate (4) and the pushing plate (12), causing the placement plate (2) to shake up and down and left and right, simulating the surface wave of an earthquake.

2. The building structure seismic simulation detection device according to claim 1, characterized in that: Baffle bars (11) are fixedly mounted on both sides of the lifting plate (4).

3. The building structure seismic simulation detection device according to claim 1, characterized in that: Limiting plates (15) are fixedly mounted on both the front and rear sides of the push plate (12), and the limiting plates (15) are movably arranged in limiting grooves, and the limiting grooves are formed on the inner wall of the box body (1).

4. The building structure seismic simulation detection device according to claim 1, characterized in that: It also includes two sets of triggers (16), which are respectively fixedly mounted on the left and right inner walls of the box body (1) and can be triggered by the movable plate (5), the output end of the trigger (16) being electrically connected to a controller, and the output end of the controller being electrically connected to the input end of the electromagnet (1206).

5. The building structure seismic simulation detection device according to claim 1, characterized in that: The movable plate (5) is provided with a square groove (17) extending therethrough, a nut (18) being slidably disposed in the square groove (17) up and down, the nut (18) being threadedly connected to a screw rod (19), the screw rod (19) being rotatably disposed in the box body (1) and driven by a drive motor (20).

6. The building structure seismic simulation detection device according to claim 5, characterized in that: A side cabinet (24) is fixedly mounted on the side wall of the box body (1), a vertical shaft (25) is rotatably arranged inside the side cabinet (24), and a transmission is used between the vertical shaft (25) and the screw rod (19); The top end of the vertical shaft (25) extends to the outside of the side cabinet (24) and is fixedly connected to a fan blade (28).

7. The building structure seismic simulation detection device according to claim 6, characterized in that: It also includes a water distribution pipe (36) which lies across the top of the placement plate (2) and is used for spraying clean water to simulate rainwater.

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