Building model anti-seismic experiment device

Abstract

This utility model discloses a seismic testing device for a building model, relating to the field of seismic testing technology. It includes a pool and a seismic simulation shaking table. The seismic simulation shaking table comprises a vibration platform, a lateral actuator, a longitudinal actuator, and a vertical actuator. The top of the outer wall of the vibration platform is provided with U-shaped extended fins. The extended fins are located above the top surface of the pool, and the vertical projection of the outer contour of the extended fins is located on the outer periphery of the top surface of the pool. A plug-in box is provided at one end of the lateral platform near the seismic simulation shaking table. The plug-in box can be inserted laterally into the movable gap and supports the extended fins upwards. The extended fins can seal the top opening of the installation gap, so parts that detach from the steel structure building model will fall onto the extended fins instead of falling into the installation gap; thus avoiding the problem of subsequent users entering the installation gap to retrieve parts.

Description

Technical Field

[0001] The utility model relates to the technical field of seismic experiments, and particularly relates to an anti-seismic experiment device for building models. Background Art

[0002] Building model seismic experiments usually have two forms. One is mathematical model simulation, and the other is physical model simulation. Among them, physical model simulation usually uses a seismic simulation shaking table. The seismic simulation shaking table can simulate seismic waves to study the seismic response and failure mechanism of building structures.

[0003] The seismic simulation shaking table usually includes a shaking table and several actuators. The seismic simulation shaking table is arranged in a pool body. There is an installation gap between the inner wall of the pool body and the shaking table. The installation gap is used to provide a accommodating space for the installation of the actuators and the movement of the shaking table.

[0004] In the traditional technology, when a steel structure building model is subjected to a seismic experiment, it is prone to overload damage and drop parts; if the parts fall into the installation gap, after the experiment is completed, the user needs to enter the installation gap and take out the dropped parts, resulting in inconvenient operation. Summary of the Invention

[0005] In order to overcome the problem of "the parts of the steel structure building model falling into the installation gap" existing in the above background art, the utility model provides an anti-seismic experiment device for building models.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] An anti-seismic experiment device for building models includes a pool body arranged in a ground pit and a seismic simulation shaking table arranged in the pool body; the seismic simulation shaking table includes a shaking table, a transverse actuator, a longitudinal actuator and a vertical actuator; one end of the transverse actuator is ball-jointed with the outer side wall of the shaking table and the other end is ball-jointed with the inner side wall of the pool body; one end of the longitudinal actuator is ball-jointed with the outer side wall of the shaking table and the other end is ball-jointed with the inner side wall of the pool body; one end of the vertical actuator is ball-jointed with the bottom surface of the outer surface of the shaking table and the other end is ball-jointed with the bottom surface of the inner cavity of the pool body; the top surface of the shaking table is higher than the top surface of the pool body; an extension fin in a shape of a rectangle is arranged at the top end of the outer side wall of the shaking table; the extension fin is located above the top surface of the pool body, and the vertical projection of the outer contour of the extension fin is located outside the periphery of the top surface of the pool body; there is a moving gap between the bottom surface of the extension fin and the top surface of the pool body; it further includes a transverse moving platform arranged beside the seismic simulation shaking table and capable of moving horizontally, and a plug-in box body is arranged at one end of the transverse moving platform close to the seismic simulation shaking table; the plug-in box body can be horizontally plugged into the moving gap and support the extension fin upward.

[0008] As a further optimization of this utility model, the extended fin includes an upper support plate, a lower support plate, and a plurality of reinforcing rods; the reinforcing rods are disposed between the upper support plate and the lower support plate; the top end of the reinforcing rod is fixedly connected to the upper support plate, and the bottom end is fixedly connected to the lower support plate.

[0009] As a further optimization of this utility model, the top surface of the upper support plate is coplanar with the top surface of the vibration platform.

[0010] As a further optimization of this utility model, the end of the transverse platform away from the plug-in box is provided with a ramp.

[0011] As a further optimization of this utility model, a track is provided on the ground next to the earthquake simulation shaking table, and an inner support frame is provided in the inner cavity of the lateral platform, the inner cavity of the plug-in box, and the inner cavity of the slope. The bottom of the inner support frame is provided with a rotatable moving wheel, which is pressed against the track. The lateral platform can travel along the track to approach or move away from the earthquake simulation shaking table.

[0012] As a further optimization of this utility model, the center of the circumference of the moving wheel is provided with an annular groove, and the top of the track is engaged in the annular groove.

[0013] As a further optimization of this utility model, a track foundation is buried in the ground, and the track is fixedly installed on the top surface of the track foundation.

[0014] As a further optimization of this utility model, the lateral actuator, the longitudinal actuator, and the vertical actuator are arranged in pairs perpendicularly.

[0015] As a further optimization of this utility model, the vibration platform is detachably connected to the steel structure building model.

[0016] As a further optimization of this utility model, the top surface of the vibration platform is provided with a plurality of screw holes, which are arranged in a matrix; the outer edge of the base plate of the steel structure building model is provided with a plurality of mounting holes, which can be adapted to align with the screw holes; mounting bolts are inserted into the mounting holes, and the mounting bolts are detachably connected to the screw holes by threads.

[0017] In summary, this utility model has at least one of the following advantages:

[0018] (1) If the extension fins can block the top opening of the installation gap, the parts that fall off the steel structure building model will fall onto the extension fins (or continue to slide onto the ground) instead of falling into the installation gap; thus avoiding the problem of subsequent users entering the installation gap to pick up the parts, simplifying the operation steps and improving the experimental efficiency.

[0019] (2) An movable gap is provided between the bottom surface of the epitaxial fin and the top surface of the pool body. The movable gap can provide space for the vertical displacement of the epitaxial fin and avoid collision between the epitaxial fin and the pool body.

[0020] (3) The end of the transverse platform is provided with a plug-in box. The plug-in box can be inserted laterally into the moving gap and apply an upward support force to the epitaxial fins to avoid the problem of the epitaxial fins bending downward due to the weight of the user / transfer vehicle.

[0021] (4) The end of the transverse platform away from the plug-in box is provided with a ramp, and the transfer vehicle can easily drive along the ramp to the transverse platform and the extension fins. The user can easily walk along the ramp to the transverse platform and the extension fins. Attached Figure Description

[0022] The present application will be further explained below with reference to the accompanying drawings:

[0023] Figure 1 This is a front view of the overall structure of this utility model;

[0024] Figure 2 This is a front view diagram of the vertical section of the earthquake simulation shaking table structure;

[0025] Figure 3 This is a top view of the overall structure of this utility model;

[0026] Figure 4 This is a top view of the connection structure between the base plate and the vibration platform;

[0027] Figure 5 This is a front view schematic diagram showing the position and structure of the extensional fins.

[0028] Figure 6 This is a top-view diagram showing the vertical projection position of the outer contour of the extensional fins.

[0029] Figure 7 This is a front view diagram of the vertical section of the extensional fin structure;

[0030] Figure 8 A front view diagram showing the position and structure of the transverse platform, the plug-in box, and the ramp.

[0031] Figure 9 A front view diagram showing the plug-in housing inserted into the movable gap.

[0032] Figure 10 A front view schematic diagram of the connection structure between the internal support frame, the moving wheels, and the track;

[0033] Figure 11 A side sectional view of the connection structure between the moving wheel, track, and track foundation;

[0034] Figure 12 This is a schematic diagram showing the insertion and connection state of the epitaxial fins, the plug-in box, and the pool body.

[0035] Explanation of reference numerals in the attached figures:

[0036] In the picture,

[0037] 1. Ground; 11. Recess; 12. Pool body; 120. Installation gap; 121. Base support plate; 122. Enclosure panel;

[0038] 2. Earthquake simulation shaking table; 21. Vibration platform; 211. Screw hole; 22. Lateral actuator; 23. Longitudinal actuator; 24. Vertical actuator; 25. Extension fin; 250. Vertical projection; 2501. Movement clearance; 251. Upper support plate; 252. Lower support plate; 253. Reinforcing rod;

[0039] 3. Steel structure building model; 31. Base plate; 311. Mounting holes; 312. Mounting bolts; 32. Load-bearing columns; 33. Roof;

[0040] 4. Lateral moving platform; 41. Insert-in box; 42. Ramp section; 43. Internal support frame; 44. Casters; 45. Track; 46. Track foundation;

[0041] 5. Receiving platform. Detailed Implementation

[0042] Based on the above-described structural features of this application, the implementation methods of this application will be further described as follows:

[0043] Reference Figures 1-2 This embodiment provides a seismic testing device for a building model, including a pool 12 disposed within a pit 11 in the ground and a seismic simulation shaking table 2 disposed within the pool 12. The pool 12 is a reinforced concrete structure, comprising a bottom support plate 121 and enclosure plates 122, both of which are rectangular in shape. Four enclosure plates 122 are provided and distributed around the bottom support plate 121. The edges of the bottom support plate 121 are vertically and fixedly connected to the bottom edges of the enclosure plates 122 (e.g., by integral casting of reinforced concrete), and the adjacent side edges of adjacent enclosure plates 122 are vertically and fixedly connected (e.g., by integral casting of reinforced concrete). The pool 12 provides reaction force for the vibration of the seismic simulation shaking table 2.

[0044] Reference Figure 2 and Figure 3 The earthquake simulation shaking table 2 includes a shaking platform 21, a transverse actuator 22, a longitudinal actuator 23, and a vertical actuator 24. The transverse actuator 22, longitudinal actuator 23, and vertical actuator 24 are arranged in pairs perpendicularly. The transverse actuator 22 is positioned transversely (i.e., along the x-axis, where the x-axis is...). Figure 2 (The left and right directions shown in the image) The longitudinal actuator 23 is set along the longitudinal direction (i.e., along the y-axis, i.e., the y-axis is... Figure 3 The vertical actuator 24 is positioned vertically (i.e., along the z-axis, which is the vertical direction shown in the image). Figure 2 (The vertical direction of the shown viewpoint). One end of the lateral actuator 22 is hinged to the outer wall of the vibration platform 21, and the other end is hinged to the inner wall of the pool body 12. One end of the longitudinal actuator 23 is hinged to the outer wall of the vibration platform 21, and the other end is hinged to the inner wall of the pool body 12. One end of the vertical actuator 24 is hinged to the bottom surface of the outer surface of the vibration platform 21, and the other end is hinged to the bottom surface of the inner cavity of the pool body 12. The lateral actuator 22, the longitudinal actuator 23, and the vertical actuator 24 cooperate to drive the vibration platform 21 to move along the xyz three axes, thereby generating vibration, and transmitting the vibration to the steel structure building model 3 set on the vibration platform 21 for seismic testing. The ball hinges are fixedly connected to the lateral actuator 22 / longitudinal actuator 23 / vertical actuator 24 / pool body 12 by bolts, and the bolts in the pool body 12 are reinforced by anchoring.

[0045] Reference Figure 2 and Figure 3 The vibration platform 21 has at least two transverse actuators 22 on each of its left and right sides; at least two longitudinal actuators 23 on each of its front and rear sides; and at least four vertical actuators 24 at the bottom of the vibration platform 21, which are arranged in a matrix at the four corners of the vibration platform 21. The vibration platform 21 has a rectangular box structure.

[0046] Reference Figure 2 The steel structure building model 3 includes a base plate 31, load-bearing columns 32, and a roof 33. The base plate 31, load-bearing columns 32, and roof 33 are all steel structures. The top and bottom of the load-bearing columns 32 are fixedly connected to the base plate 31 (e.g., by welding or bolting, both common connection methods in steel structure buildings). The roof 33 is a frame structure, and the base plate 31 simulates the building foundation.

[0047] Reference Figure 2, the vibration platform 21 is detachably connected to the steel structure building model 3, so that the user can install steel structure building models 3 with different structures (such as bearing columns 32 with different cross-sectional shapes, different numbers of bearing columns 32, bearing columns 32 with different lengths, etc.) on the vibration platform 21 and conduct seismic experiments.

[0048] Refer to Figures 2-4 , a plurality of screw holes 211 are provided on the top surface of the vibration platform 21, and the screw holes 211 are arranged in a matrix; a plurality of mounting holes 311 are provided on the outer edge of the bottom plate 31 of the steel structure building model 3, and the mounting holes 311 can be adapted to align with the screw holes 211; mounting bolts 312 are inserted into the mounting holes 311, and the mounting bolts 312 and the screw holes 211 are detachably connected by threads. The mounting bolts 312 can be screwed into or out of the screw holes 211 to achieve the detachable connection between the mounting bolts 312, the steel structure building model 3 and the vibration platform 21.

[0049] The screw holes 211 in the unused state are blocked with rubber plugs to avoid the problem that small parts falling off the steel structure building model 3 enter the screw holes 211 and are difficult to take out.

[0050] Refer to Figure 2 , Figure 3 , Figure 5 And Figure 6 , there is an installation gap 120 between the inner wall of the pool body 12 and the outer wall of the vibration platform 21; the installation gap 120 is used to provide installation space for the lateral actuator 22, the longitudinal actuator 23 and the vertical actuator 24, and provide accommodation space for the vibration of the vibration platform 21. During the seismic experiment, if the steel structure building model 3 is overloaded and damaged and parts fall off, the fallen parts will fall into the installation gap 120. After the experiment is completed, the user needs to enter the installation gap 120 and take out the fallen parts, which is rather cumbersome; moreover, during the falling process of the parts, if the parts happen to be in a horizontal state, their two ends will respectively abut against the inner wall of the pool body 12 and the outer wall of the vibration platform, which is likely to cause the cylinder block of the lateral actuator 22 / longitudinal actuator 23 to burst; furthermore, during the falling process of the parts, it is easy to vertically strike the lateral actuator 22 / longitudinal actuator 23, causing damage to the lateral actuator 22 / longitudinal actuator 23 / oil pipeline / conducting wire. To avoid such problems: the top surface of the vibration platform 21 is higher than the top surface of the pool body 12; the top end of the outer side wall of the vibration platform 21 is provided with a circumferential extension fin 25 in a shape of a rectangle; the extension fin 25 is located above the top surface of the pool body 12, and the vertical projection 250 of the outer contour of the extension fin 25 is located outside the perimeter of the top surface of the pool body 12 (as Figure 6 shown). The extension fin 25 is used to block the top opening of the installation gap 120, so that the parts falling off the steel structure building model 3 will fall on the extension fin 25 (or continue to slide to the ground 1), rather than falling into the installation gap 120, thereby avoiding the above risks.

[0051] Reference Figure 5 An movable gap 2501 is provided between the bottom surface of the epitaxial fin 25 and the top surface of the tank body 12. The epitaxial fin 25 vibrates synchronously with the vibration platform 21, and the movable gap 2501 is used to provide space for the vertical displacement of the epitaxial fin 25, so as to avoid the epitaxial fin 25 from hitting the tank body 12 and causing damage, and at the same time avoid the generation of impact noise.

[0052] Reference Figure 7 The extended fin 25 includes an upper support plate 251, a lower support plate 252, and a plurality of reinforcing rods 253. The upper support plate 251 is fixedly connected at its end to the vibration platform 21 (e.g., by bolts or welding), and the lower support plate 252 is also fixedly connected at its end to the vibration platform 21 (e.g., by bolts or welding). The reinforcing rods 253 are disposed between the upper support plate 251 and the lower support plate 252; the top end of each reinforcing rod 253 is fixedly connected to the upper support plate 251 (e.g., by bolts or welding), and the bottom end is fixedly connected to the lower support plate 252 (e.g., by bolts or welding). The reinforcing rods 253 are provided in several triangular structures, thereby increasing the structural strength of the extended fins 25 and preventing the extended fins 25 from bending downwards (whether a user stands on the extended fins 25 or a transport vehicle is on the extended fins 25, downward pressure will be applied to the extended fins 25); after the extended fins 25 bend downwards, when the extended fins 25 vibrate synchronously with the vibration platform 21, they will hit the pool body 12 / ground 1, generating noise and damaging the actuators (including the horizontal actuator 22, the longitudinal actuator 23 and the vertical actuator 24); and after the extended fins 25 bend downwards, they will be difficult to support the users / transport vehicles.

[0053] Reference Figure 8 and Figure 9It also includes a lateral moving platform 4 located beside the earthquake simulation shaking table 2 and capable of lateral movement. The end of the lateral moving platform 4 closest to the earthquake simulation shaking table 2 has a plug-in box 41; the plug-in box 41 can be laterally plugged into the movable gap 2501 and supports the extended fins 25 upwards. The end of the lateral moving platform 4 away from the plug-in box 41 has a ramp 42. The steel structure building model 3 has a large weight and requires short-distance transportation using a transport vehicle (e.g., a forklift); the transport vehicle travels upwards along the ramp 42, passes the lateral moving platform 4, and stops on the extended fins 25. Then, the forklift arm lowers and places the steel structure building model 3 on the shaking platform 21; subsequently, personnel stand on the shaking platform 21 / extended fins 25 to load and unload the mounting bolts 312. It is known that the extended fin 25 needs to bear the weight of the transport vehicle and the user; while the plug-in box 41 can be inserted laterally into the movable gap 2501 and support the extended fin 25 upward (the top surface of the plug-in box 41 is pressed against the extended fin 25, and the bottom surface is pressed against the top surface of the pool body 12), thereby avoiding the problem of the extended fin 25 bending downward due to overload (due to bearing the weight of the transport vehicle and the user).

[0054] The top surface of the upper support plate 251 is coplanar with the top surface of the vibration platform 21, which makes it easier for users to walk on the top surfaces of the upper support plate 251 and the vibration platform 21.

[0055] Reference Figure 10 and Figure 11 A track 45 is provided on the ground 1 next to the earthquake simulation shaking table 2. The inner cavity of the transverse platform 4, the inner cavity of the plug-in box 41, and the inner cavity of the ramp 42 are all provided with an inner support frame 43. The inner support frame 43 is used to prevent the outer shell of the transverse platform 4, the outer shell of the plug-in box 41, and the outer shell of the ramp 42 from sinking inward (due to bearing the weight of the users and / or transport vehicles). The bottom of the inner support frame 43 is provided with a rotatable moving wheel 44, which is pressed into the track 45. The transverse platform 4 can travel along the track 45 to approach or move away from the earthquake simulation shaking table 2, so that the plug-in box 41 can be inserted into or pulled out of the movable gap 2501.

[0056] A drive system is installed within the inner support frame 43. The drive system includes an electric motor, a reducer connected to the motor, and a transmission gear set connected to the reducer. The transmission gear set is connected to the axle of the moving wheel 44, enabling the electric motor to drive the moving wheel 44 to rotate on the track 45, thereby achieving the movement of the transverse platform 4. A braking system is also installed within the inner support frame 43, connected to the moving wheel 44 to prevent the moving wheel 44 from stopping, thus achieving parking of the transverse platform 4. A control system (e.g., an onboard control chip) is also installed within the inner support frame 43. The drive system and braking system are electrically connected to the control system, which is connected to an external power source. The drive system, braking system, and control system are all conventional existing technologies in the industry and are not considered innovative points of this utility model; therefore, they will not be described in detail further.

[0057] Reference Figure 9 The top surface of the transverse platform 4 is coplanar with the top surface of the extended fin 25 (i.e., the top surface of the upper support plate 251), which facilitates the movement of transport vehicles. The top surfaces of the extended fin 25, the transverse platform 4, and the ramp 42 are equipped with anti-slip structures (such as using bolts to fix rubber layers, patterned steel plates, etc.) to prevent slippage during the walking process of users and the movement of transport vehicles.

[0058] Reference Figure 11 The movable wheel 44 has an annular groove in the middle of its circumference, and the top of the track 45 is locked in the annular groove to prevent the movable wheel 44 from slipping off the track 45.

[0059] Reference Figure 11 A track foundation 46 is embedded in the ground 1, and a track 45 is fixedly installed (e.g., by bolts) on the top surface of the track foundation 46. Sleepers, track 45 plates, or other structures can be installed between the track 45 and the track foundation 46 to distribute the load, optimize the stress on the track foundation 46, and improve its service life.

[0060] This utility model also includes an oil supply system, which includes an oil tank, oil pipes and several oil pumps. The oil tank and several oil pumps are connected and communicate with each other through oil pipes. The several oil pumps are connected and communicate with the lateral actuator 22, the longitudinal actuator 23 and the vertical actuator 24 respectively, thereby driving the lateral actuator 22, the longitudinal actuator 23 and the vertical actuator 24 to operate.

[0061] This utility model also includes an electrical cabinet, which is fixedly mounted on the ground 1 with bolts. Several oil pumps are connected to the electrical cabinet via wires and signal lines. The electrical cabinet is also connected to an external power supply and an external controller (such as a computer or a PLC programmable logic controller) via wires and signal lines. The external controller controls the start and stop of the horizontal actuator 22, the longitudinal actuator 23, and the vertical actuator 24 in this utility model through the electrical cabinet. The motors connected to the oil pumps are controllable motors (such as servo motors or stepper motors). The external controller inputs electrical signals to the controllable motors, which can control the speed and start / stop timing of the controllable motors.

[0062] Reference Figure 9 A receiving platform 5 is provided at the bottom of the inner cavity of the pool body 12, and the receiving platform 5 is fixedly connected to the bottom of the inner cavity of the pool body 12 (for example, by bolts). When the vertical actuator 24 is shortened, the horizontal actuator 22 is extended, and the longitudinal actuator 23 is extended, the vibration platform 21 can be stably placed on the receiving platform 5.

[0063] Reference Figure 12 The bottom surface of the extended fin 25 is inclined (the end of the bottom surface of the extended fin 25 near the vibration platform 21 is inclined downward and the end away from the vibration platform 21 is inclined upward); the top surface of the pool body 12 is inclined (the end of the top surface of the pool body 12 near the vibration platform 21 is inclined upward and the end away from the vibration platform 21 is inclined downward); the top surface of the insertion box 41 is inclined and adapted to the bottom surface of the extended fin 25, and the ground 1 of the insertion box 41 is inclined and adapted to the top surface of the pool body 12, so that the insertion box 41 can be smoothly inserted laterally into the movable gap 2501 or smoothly pulled out from the movable gap 2501.

[0064] Operating steps: ① Press the vibration platform 21 onto the receiving platform 5; ② Move the transverse platform 4 towards the earthquake simulation vibration table 2 until the insertion box 41 is inserted into the movable gap 2501, so that the insertion box 41 supports the extended fins 25 from bottom to top; ③ The transport vehicle carrying the steel structure building model 3 travels through the ramp 42 onto the transverse platform 4, and then further onto the extended fins 25 (since there is still a cavity below the inner edge of the extended fins 25, the front wheels of the transport vehicle must not cross the end of the insertion box 41 near the vibration platform 21 to avoid overload and sinking of the inner edge of the extended fins 25); ④ The transport vehicle places the steel structure building model 3 on the vibration platform 21 and / or the extended fins 25; ⑤ The user walks through the ramp 42 onto the transverse platform 4, and then further onto the vibration platform 21 / extended fins 25; ⑥ The user moves the steel structure building model 3. Align the mounting holes 311 and 211, then insert the mounting bolts 312 into the mounting holes 311 and 211 and tighten them; ⑦ The transport vehicle returns along the original route, and the user returns along the original route; ⑧ The transverse platform 4 moves away from the earthquake simulation shaking table 2 until the plug-in box 41 is pulled out from the movable gap 2501; ⑨ Use the earthquake simulation shaking table 2 to drive the steel structure building model 3 to vibrate and conduct a seismic test; ⑩ Stop the earthquake simulation shaking table 2 and press the vibration platform 21 onto the receiving platform 5; ⑪ The transverse platform 4 moves towards the earthquake simulation shaking table 2 until the plug-in box 41 is inserted into the movable gap 2501, so that the plug-in box 41 supports the extended fins 25 from bottom to top; ⑫ The user walks across the ramp 42 onto the transverse platform 4, and then walks further onto the vibration platform 21 / extended fins 25; then the user checks the connection strength between the various components of the steel structure building model 3.

[0065] This utility model has a simple structure and reliable function. The extended fins 25 can block the top opening of the installation gap 120, so the parts that fall off the steel structure building model 3 will fall on the extended fins 25 (or continue to slide onto the ground 11) instead of falling into the installation gap 120. This avoids the problem of subsequent users entering the installation gap 120 to pick up the parts, simplifies the operation steps, and improves the experimental efficiency.

[0066] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] In conclusion, for those skilled in the art, any changes, modifications, substitutions, or variations made to this utility model based on its guidance, without departing from its principles and spirit, shall still fall within the protection scope of this utility model.

Claims

1. A seismic testing device for building models, characterized in that: It includes a pool (12) set in a pit (11) on the ground (1) and an earthquake simulation shaking table (2) set in the pool (12). The earthquake simulation shaking table (2) includes a shaking platform (21), a lateral actuator (22), a longitudinal actuator (23), and a vertical actuator (24); one end of the lateral actuator (22) is spherically hinged to the outer wall of the shaking platform (21), and the other end is hinged to the inner wall of the pool body (12); one end of the longitudinal actuator (23) is spherically hinged to the outer wall of the shaking platform (21), and the other end is hinged to the inner wall of the pool body (12); one end of the vertical actuator (24) is spherically hinged to the bottom surface of the outer surface of the shaking platform (21), and the other end is spherically hinged to the bottom surface of the inner cavity of the pool body (12); The top surface of the vibration platform (21) is higher than the top surface of the pool body (12); the top of the outer wall of the vibration platform (21) is provided with an extended fin (25) in the shape of a back; the extended fin (25) is located above the top surface of the pool body (12), and the vertical projection (250) of the outer contour of the extended fin (25) is located on the outer periphery of the top surface of the pool body (12); An movable gap (2501) is provided between the bottom surface of the extended fin (25) and the top surface of the pool body (12). It also includes a transverse platform (4) located beside the earthquake simulation shaking table (2) and capable of moving laterally. The transverse platform (4) has a plug-in box (41) at one end near the earthquake simulation shaking table (2). The plug-in box (41) can be inserted laterally into the movable gap (2501) and support the extended fins (25) upward.

2. The seismic testing device for building models according to claim 1, characterized in that: The extended fin (25) includes an upper support plate (251), a lower support plate (252), and a plurality of reinforcing rods (253); the reinforcing rods (253) are disposed between the upper support plate (251) and the lower support plate (252); the top end of the reinforcing rod (253) is fixedly connected to the upper support plate (251), and the bottom end is fixedly connected to the lower support plate (252).

3. The seismic testing device for building models according to claim 2, characterized in that: The top surface of the upper support plate (251) is coplanar with the top surface of the vibration platform (21).

4. The seismic testing device for building models according to claim 3, characterized in that: The transverse platform (4) has a ramp (42) at the end away from the plug-in box (41).

5. The seismic testing device for building models according to claim 4, characterized in that: A track (45) is provided on the ground (1) next to the earthquake simulation shaking table (2). The inner cavity of the transverse platform (4), the inner cavity of the plug-in box (41) and the inner cavity of the ramp (42) are all provided with an inner support frame (43). The bottom of the inner support frame (43) is provided with a rotatable moving wheel (44), which is pressed against the track (45). The transverse platform (4) can travel along the track (45) to approach or move away from the earthquake simulation shaking table (2).

6. The seismic testing device for building models according to claim 5, characterized in that: The moving wheel (44) has an annular groove in the middle of its circumference, and the top of the track (45) is engaged in the annular groove.

7. The seismic testing device for building models according to claim 6, characterized in that: The ground (1) is embedded with a track foundation (46), and the track (45) is fixedly installed on the top surface of the track foundation (46).

8. The seismic testing device for building models according to claim 7, characterized in that: The lateral actuator (22), the longitudinal actuator (23), and the vertical actuator (24) are arranged in pairs perpendicularly.

9. The seismic testing device for building models according to claim 8, characterized in that: The vibration platform (21) is detachably connected to the steel structure building model (3).

10. The seismic testing device for building models according to claim 9, characterized in that: The top surface of the vibration platform (21) is provided with a number of screw holes (211), which are arranged in a matrix. The outer edge of the base plate (31) of the steel structure building model (3) is provided with a number of mounting holes (311), which can be adapted to align with the screw holes (211). Mounting bolts (312) are inserted into the mounting holes (311), and the mounting bolts (312) are detachably connected to the screw holes (211) by threads.

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