Multi-layer module assembly type steel structure energy dissipation and shock absorption device

Abstract

The invention discloses a multi-layer module assembly type steel structure energy dissipation and shock absorption device, which relates to the technical field of steel structure shock absorption devices, and comprises an upper connecting seat, a lower connecting seat, a high-strength bolt, a connecting structure, an energy dissipation module and a limiting structure, the upper connecting base and the lower connecting base are fixed to a beam body or a column body at a modular steel structure connecting joint through high-strength bolts correspondingly, the connecting structure is used for connecting the upper connecting base and the lower connecting base and limiting the displacement range of the upper connecting base and the lower connecting base, and the energy dissipation module is arranged between the upper connecting base and the lower connecting base and used for connecting the upper connecting base and the lower connecting base. The limiting structures are installed on the edges of the upper connecting base and the lower connecting base and used for limiting the displacement range of the energy dissipation module. The energy dissipation capacity and the deformation capacity of the modular steel structure can be effectively improved, and the situation that the structure is damaged due to the fact that energy cannot be effectively consumed in an earthquake is avoided.

Description

Technical Field

[0001] This application relates to the technical field of steel structure vibration damping devices, and in particular to a multi-layer modular assembled steel structure energy-dissipating vibration damping device. Background Technology

[0002] With the development of industrialized construction, modular steel structure buildings have gradually become an important development direction in the construction industry due to their advantages such as fast construction speed and environmental protection and energy saving. However, traditional modular steel structures have shortcomings in seismic performance, and their structural safety and stability face severe challenges in the event of disasters such as earthquakes.

[0003] In recent years, scholars both domestically and internationally have conducted extensive research on the seismic performance of modular steel structures, proposing various technical means to enhance seismic resistance, such as using high-strength bolt connections or adding metal dampers and friction dampers. While high-strength bolt connections increase the structural strength at the connection nodes, their energy dissipation and deformation capacity are limited, making them prone to structural failure, especially under seismic loads. Metal dampers and friction dampers require complex operations and precise positioning during installation, demanding high technical skills from construction personnel and increasing construction difficulty and cost. Furthermore, these technologies face numerous challenges in later maintenance, such as the need for regular inspection and component replacement, resulting in high maintenance costs. Therefore, developing an energy dissipation and vibration reduction technology suitable for modular steel structures has significant engineering implications. Summary of the Invention

[0004] To address the problems existing in the prior art, this application provides a multi-layer modular assembled steel structure energy dissipation and vibration reduction device.

[0005] This application provides a multi-layer modular assembled steel structure energy dissipation and vibration reduction device, which adopts the following technical solution: A multi-layer modular prefabricated steel structure energy-dissipating and vibration-damping device includes an upper connecting seat, a lower connecting seat, high-strength bolts, a connecting structure, an energy-dissipating module, and a limiting structure. The upper and lower connecting seats are respectively fixed to the beams or columns at the connection nodes of the modular steel structure by high-strength bolts. The connecting structure is used to connect the upper and lower connecting seats and limit the displacement range of the upper and lower connecting seats. The energy-dissipating module is disposed between the upper and lower connecting seats to dissipate seismic energy. The limiting structure is installed at the edges of the upper and lower connecting seats to limit the displacement range of the energy-dissipating module.

[0006] Optionally, the energy-consuming module includes an upper end plate, a lower end plate, and a plurality of energy-consuming core plates installed between the upper end plate and the lower end plate and stacked in sequence. Rubber shock-absorbing pads are provided between the upper end plate and the energy-consuming core plates, between the lower end plate and the energy-consuming core plates, and between adjacent energy-consuming core plates.

[0007] Optionally, the energy-consuming core board is configured in a wave shape, and both the upper and lower end plates are provided with wave grooves adapted to the energy-consuming core board.

[0008] Optionally, the end face of the energy-consuming core board is provided with a plurality of limiting posts, which are embedded in the rubber shock-absorbing pads on the same side.

[0009] Optionally, the connection structure includes a tie rod and a limiting nut. The lower connecting seat is provided with a plurality of first mounting holes for the tie rod to pass through, and the upper connecting seat is provided with a plurality of second mounting holes for the tie rod to pass through. The first mounting holes and the second mounting holes correspond one-to-one, and the limiting nut is adapted to the tie rod.

[0010] Optionally, the connection structure further includes a frame buckle plate, which has multiple through holes corresponding to the pull rods and for the corresponding pull rods to pass through. The frame buckle plate is provided with an elastic tab at each through hole position. The side wall of the pull rod is provided with a notch for the elastic tab to be engaged. The elastic tab is provided with a locking block, and the notch is provided with a slot for the locking block to be inserted.

[0011] Optionally, the limiting structure includes a first limiting frame and a second limiting frame. Multiple first limiting frames are provided and are all fixed to the upper connecting seat by screws. Each first limiting frame is distributed along the circumference of the upper connecting seat. Multiple second limiting frames are provided and are all fixed to the lower connecting seat by screws. Each second limiting frame is arranged along the circumference of the upper connecting seat.

[0012] Optionally, the first limiting frame and the second limiting frame correspond one-to-one. The side wall of the second limiting frame is provided with a fastening block, and the first limiting frame is provided with a sliding groove for the fastening block on the corresponding second limiting frame to be engaged.

[0013] Optionally, each of the second limiting frame bars is provided with an elastic pressing sheet on its inner side, the elastic pressing sheet being used to abut against the side wall of the energy-consuming module.

[0014] Optionally, the energy-consuming core plate is configured as a cone shape, the lower end plate is provided with a cone-shaped groove adapted to the energy-consuming core plate, and the upper end plate is provided with a cone-shaped protrusion adapted to the energy-consuming core plate.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. This application can improve the energy dissipation and deformation capacity of modular steel structures, preventing structural damage during earthquakes due to the inability to effectively dissipate energy. Specifically, the upper and lower connecting seats can be fixed to the beams or columns at the connection nodes of the modular steel structure using high-strength bolts, facilitating device installation; the connecting structure connects the upper and lower connecting seats and restricts their displacement range, ensuring the structural stability of the device; the energy dissipation module is placed between the upper and lower connecting seats, dissipating seismic energy and enhancing the seismic performance of the structure; the limiting structure is installed at the edges of the upper and lower connecting seats, restricting the displacement range of the energy dissipation module, protecting the energy dissipation module, and ensuring the stability of the energy dissipation module's performance.

[0016] 2. The energy dissipation module of this application consists of an upper end plate, a lower end plate, and multiple energy dissipation core plates stacked sequentially, with rubber damping pads provided between each plate. The rubber damping pads play a buffering and shock absorption role, enhancing the energy dissipation and shock absorption effect of the device. This multi-layer stacked design of the energy dissipation core plate can achieve multi-stage yielding, significantly improving the energy dissipation capacity.

[0017] 3. This application utilizes a frame fastener plate with through holes for the tie rods to pass through. Elastic tabs are engaged with notches in the sidewalls of the tie rods, and locking blocks are inserted into slots within these notches. Limiting nuts secure the elastic tabs within the notches, thus connecting the tie rods into a single unit via the rear frame fastener plate. During use, the frame fastener plate limits the maximum displacement between the lower and upper connecting seats, effectively preventing the impact load generated during relative sliding between them from directly acting on the limiting bolts and causing them to loosen. This further strengthens the connection stability of the structure and improves the reliability of the entire energy-dissipating and vibration-damping device under seismic loads.

[0018] 4. Each first limiting frame of the limiting structure is fixed to the circumference of the upper connecting seat with screws, and each second limiting frame is fixed to the circumference of the lower connecting seat with screws. This effectively limits the displacement range of the energy dissipation module, ensuring its stable operation under seismic loads. Furthermore, the screw connection between the first and second limiting frames facilitates installation and disassembly, improving future maintenance and replacement of the energy dissipation module and enhancing its practicality.

[0019] 5. By abutting the sidewall of the energy dissipation module with elastic pressing plates set inside each of the second limiting frame strips, the displacement of the energy dissipation module can be further restricted, the limiting effect on the energy dissipation module can be enhanced, and the stability of the energy dissipation module after installation can be improved; at the same time, it can increase the reset capability of the energy dissipation module during operation, ensuring that the energy dissipation module can play a more stable energy dissipation role under seismic action. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is an exploded view of the structure of Embodiment 1 of this application; Figure 3 This is a partial structural cross-sectional view of Embodiment 1 of this application, mainly used to illustrate the connection relationship between the frame buckle plate and the tie rod; Figure 4 This is a structural cross-sectional view of Embodiment 1 of this application; Figure 5 yes Figure 4 Enlarged view of part A Figure 6 This is a structural cross-sectional view of Embodiment 2 of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Upper connecting seat; 2. Lower connecting seat; 3. High-strength bolt; 4. Connecting structure; 41. Pull rod; 411. Notch; 412. Slot; 42. Limiting nut; 43. Frame buckle plate; 431. Elastic lever; 432. Buckle block; 5. Energy dissipation module; 51. Upper end plate; 52. Lower end plate; 53. Energy dissipation core plate; 531. Limiting post; 54. Rubber shock-absorbing pad; 6. Limiting structure; 61. First limiting frame strip; 611. Slide groove; 62. Second limiting frame strip; 621. Fastening block; 63. Elastic pressing sheet. Detailed Implementation

[0022] The following will be combined with the appendix Figure 1 - Appendix Figure 6 The technical solutions in the embodiments of the present invention are clearly and completely described herein. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0023] The inventors of this application have observed that in recent years, domestic and international scholars have conducted extensive research on the seismic performance of modular steel structures, proposing various technical means to enhance seismic resistance, such as using high-strength bolt connections or adding metal dampers and friction dampers. While high-strength bolt connections increase the structural strength at the steel structure connection nodes, their energy dissipation and deformation capacity are limited, especially under seismic loads, making them prone to structural failure. Metal dampers and friction dampers require complex operations and precise positioning during installation, demanding high technical skills from construction personnel and increasing construction difficulty and cost. Furthermore, these technologies face numerous challenges in later maintenance, such as the need for regular inspection and component replacement, resulting in high maintenance costs. Therefore, this application discloses a multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device, mainly employing the following scheme: Example

[0024] This application discloses an energy-dissipating and vibration-damping device for a multi-layer modular prefabricated steel structure. (Refer to...) Figure 1 The system includes an upper connecting seat 1, a lower connecting seat 2, high-strength bolts 3, a connecting structure 4, an energy-dissipating module 5, and a limiting structure 6. The upper connecting seat 1 and the lower connecting seat 2 are fixed to the beams or columns at the connection nodes of the modular steel structure by the high-strength bolts 3. The connecting structure 4 connects the upper connecting seat 1 and the lower connecting seat 2 and limits their displacement range. The energy-dissipating module 5 is placed between the upper connecting seat 1 and the lower connecting seat 2 to dissipate seismic energy. The limiting structure 6 is installed at the edges of the upper connecting seat 1 and the lower connecting seat 2 to limit the displacement range of the energy-dissipating module 5. This system improves the energy dissipation capacity and deformation capacity of the modular steel structure and prevents the structure from being damaged during an earthquake due to the inability to effectively dissipate energy.

[0025] Reference Figure 2 Specifically, the connecting structure 4 includes a tie rod 41, a limiting nut 42, and a frame plate 43. The tie rod 41 is typically a threaded rod made of metal, possessing high strength and capable of withstanding significant tensile force. Alternatively, it can be a high-strength alloy rod. The limiting nut 42 is adapted to the tie rod 41. The lower connecting seat 2 has multiple first mounting holes for the tie rod 41 to pass through, and the upper connecting seat 1 has multiple second mounting holes for the tie rod 41 to pass through. The first mounting holes and second mounting holes correspond one-to-one. The tie rod 41 passes through the first mounting holes of the lower connecting seat 2 and the second mounting holes of the upper connecting seat 1, and the limiting nut 42 limits the maximum displacement range between the upper connecting seat 1 and the lower connecting seat 2.

[0026] Reference Figure 2 and Figure 3The frame plate 43 is generally a metal frame structure. Multiple through holes are provided on the frame plate 43, each corresponding to a pull rod 41, allowing the corresponding pull rod 41 to pass through. An elastic tab 431 is provided on the frame plate 43 at each through hole position. The elastic tab 431 is generally made of metal and has a certain elastic deformation capacity; it can be made of spring steel or other elastic materials. The side wall of the pull rod 41 has a notch 411 for the elastic tab 431 to engage. A locking block 432 is provided on the elastic tab 431, and a slot 412 is provided within the notch 411 for the locking block 432 to be inserted. With the frame buckle plate 43, each through hole of the frame buckle plate 43 allows the tie rods 41 to pass through. The elastic tab 431 is inserted into the notch 411 on the side wall of the tie rod 41, and the locking block 432 is inserted into the slot 412 in the notch 411. The elastic tab 431 is locked in the notch 411 of the tie rod 41 by the limiting nut 42. Thus, the tie rods 41 are connected into a whole by the rear frame buckle plate 43. In use, the frame buckle plate 43 limits the maximum displacement range between the lower connecting seat 2 and the upper connecting seat 1. This can effectively prevent the impact load generated when the upper connecting seat 1 and the lower connecting seat 2 slide relative to each other from directly acting on the limiting bolts, causing the limiting bolts to loosen. This further strengthens the connection stability of the connection structure 4 and improves the reliability of the entire energy dissipation and vibration reduction device under seismic action.

[0027] Reference Figure 4 Specifically, the energy-consuming module 5 includes an upper end plate 51, a lower end plate 52, and multiple energy-consuming core plates 53 installed between the upper end plate 51 and the lower end plate 52 and stacked sequentially. The upper end plate 51 is typically made of metal, such as steel plate, possessing a certain strength and rigidity. It is flat in shape and can be replaced with a flat plate made of alloy material. The lower end plate 52 is also generally a flat plate made of metal, but can also be made of other high-strength materials to create a similar flat structure. Rubber damping pads 54 are provided between the upper end plate 51 and the energy-consuming core plates 53, between the lower end plate 52 and the energy-consuming core plates 53, and between adjacent energy-consuming core plates 53. The rubber damping pads 54 act as buffers and dampers, enhancing the energy consumption and vibration reduction effect of the device. This multi-layered stacked design of the energy-consuming core plates 53 enables multi-stage yielding, and combined with the buffering effect of the rubber damping pads 54, significantly improves the energy consumption capacity of the energy-consuming module 5. Furthermore, the rubber damping pads 54 can be replaced with silicone damping pads.

[0028] Reference Figure 4Specifically, the energy-dissipating core plate 53 is designed in a wave shape. This wave shape enhances the ductility of the energy-dissipating core plate 53, increases the deformation space and energy dissipation path, thereby improving its energy dissipation capacity. Both the upper end plate 51 and the lower end plate 52 are provided with wave grooves adapted to the energy-dissipating core plate 53. The shape of the wave grooves matches the wave shape of the energy-dissipating core plate 53. The design of the wave grooves on the upper end plate 51 and the lower end plate 52, adapted to the energy-dissipating core plate 53, ensures the stable installation of the energy-dissipating core plate 53, enabling the device to more stably perform its energy dissipation and vibration reduction function under seismic action.

[0029] Reference Figure 4 and Figure 5 The end face of the energy-dissipating core plate 53 is provided with several limiting posts 531, which are embedded in the rubber damping pads 54 on the same side. The limiting posts 531 are generally cylindrical. The limiting posts 531 on the end face of the energy-dissipating core plate 53 are embedded in the rubber damping pads 54 to prevent relative sliding between the energy-dissipating core plate 53 and the rubber damping pads 54, ensuring the stability of the energy-dissipating module 5 structure, and thus improving the energy dissipation and vibration reduction performance of the entire device. In addition, the limiting posts 531 can also be other shapes such as square columns.

[0030] Reference Figure 2 and Figure 4 Specifically, the limiting structure 6 includes a first limiting frame 61 and a second limiting frame 62. Multiple first limiting frame 61s are provided and all are fixed to the upper connecting seat 1 with screws. Each first limiting frame 61 is distributed circumferentially along the upper connecting seat 1. The first limiting frame 61 is generally made of metal and can be angle steel, channel steel, or other profiles. Multiple second limiting frame 62s are provided and all are fixed to the lower connecting seat 2 with screws. Each second limiting frame 62 is arranged circumferentially along the upper connecting seat 1. The second limiting frame 62 is also made of metal.

[0031] Reference Figure 5 The first limiting frame 61 and the second limiting frame 62 correspond one-to-one. The side wall of the second limiting frame 62 is provided with a fastening block 621. The fastening block 621 is generally a metal block, which can be welded to the second limiting frame 62 or integrally formed. The first limiting frame 61 is provided with a sliding groove 611, which is used for the corresponding fastening block 621 on the second limiting frame 62 to engage. This fastening method allows the first limiting frame 61 and the second limiting frame 62 to slide relative to each other, while limiting the displacement range of the energy-consuming module 5.

[0032] Reference Figure 4 and Figure 5Each second limiting frame 62 has an elastic pressing sheet 63 on its inner side. The elastic pressing sheet 63 is generally a thin sheet of metal with a certain degree of elasticity. It can be a spring sheet or a rubber sheet or other elastic material. The elastic pressing sheet 63 is used to abut against the side wall of the energy dissipation module 5, which can further limit the displacement of the energy dissipation module 5, enhance the limiting effect of the energy dissipation module 5, improve the stability of the energy dissipation module 5 after installation, and increase the reset ability of the energy dissipation module 5 during operation, so as to ensure that the energy dissipation module 5 can play a more stable energy dissipation role under the action of earthquake.

[0033] The implementation principle of a multi-layer modular prefabricated steel structure energy dissipation and vibration damping device according to an embodiment of this application is as follows: The upper connecting seat 1 and the lower connecting seat 2 of the multi-layer modular prefabricated steel structure energy dissipation and vibration damping device can be fixed to the beam or column at the connection node of the modular steel structure by high-strength bolts 3, which facilitates the installation of the device. When an earthquake occurs, the corrugated energy dissipation core plate 53 in the energy dissipation module 5 deforms under the action of seismic force, dissipating seismic energy. The multi-layer overlapping design and the buffering effect of the rubber damping pad 54 further improve the energy dissipation effect. The tie rods 41 and the limiting nuts 42 in the connecting structure 4 ensure the connection stability between the upper connecting seat 1 and the lower connecting seat 2. The frame buckle plate 43 connects each tie rod 41 into a whole, enhancing the impact resistance of the connecting structure 4. The first limiting frame strip 61 and the second limiting frame strip 62 of the limiting structure 6 limit the displacement range of the energy dissipation module 5, and the elastic pressing plate 63 further protects the energy dissipation module 5 to ensure stable operation. The entire device works in concert, significantly improving the energy dissipation and deformation capacity of the modular steel structure, enhancing the structure's safety and stability during earthquakes. Compared with existing technologies, it solves the problems of insufficient seismic performance of traditional modular steel structures and the limited energy dissipation capacity and installation and maintenance difficulties of existing seismic technologies. Example

[0034] Reference Figure 6 The difference between this embodiment and Embodiment 1 is that the energy-consuming core plate 53 of the energy-consuming module 5 is designed in a conical shape. The lower end plate 52 has a conical groove adapted to the energy-consuming core plate 53, and the upper end plate 51 has a conical protrusion adapted to the energy-consuming core plate 53. This conical design of the energy-consuming core plate 53 allows for better stress dispersion when under load, further improving energy consumption. The cooperation of the conical groove and the conical protrusion ensures stable installation of the energy-consuming core plate 53. Furthermore, under seismic action, the conical structure makes the deformation of the energy-consuming core plate 53 more uniform, enhancing the overall performance of the energy-consuming module 5.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device, characterized in that: The system includes an upper connecting seat (1), a lower connecting seat (2), high-strength bolts (3), a connecting structure (4), an energy-consuming module (5), and a limiting structure (6). The upper connecting seat (1) and the lower connecting seat (2) are fixed to the beams or columns at the modular steel structure connection nodes by high-strength bolts (3). The connecting structure (4) is used to connect the upper connecting seat (1) and the lower connecting seat (2) and limit the displacement range of the upper connecting seat (1) and the lower connecting seat (2). The energy-consuming module (5) is set between the upper connecting seat (1) and the lower connecting seat (2) and is used to consume seismic energy. The limiting structure (6) is installed on the edges of the upper connecting seat (1) and the lower connecting seat (2) and is used to limit the displacement range of the energy-consuming module (5).

2. The multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device according to claim 1, characterized in that: The energy-consuming module (5) includes an upper end plate (51), a lower end plate (52), and a plurality of energy-consuming core plates (53) installed between the upper end plate (51) and the lower end plate (52) and stacked in sequence. Rubber shock-absorbing pads (54) are provided between the upper end plate (51) and the energy-consuming core plate (53), between the lower end plate (52) and the energy-consuming core plate (53), and between adjacent energy-consuming core plates (53).

3. The multi-layer modular prefabricated steel structure energy dissipation and vibration damping device according to claim 2, characterized in that: The energy-consuming core plate (53) is configured in a wave shape, and both the upper end plate (51) and the lower end plate (52) are provided with wave grooves adapted to the energy-consuming core plate (53).

4. The multi-layer modular prefabricated steel structure energy dissipation and vibration damping device according to claim 3, characterized in that: The end face of the energy-consuming core plate (53) is provided with a number of limiting posts (531), and the limiting posts (531) are embedded in the rubber shock-absorbing pads (54) on the same side.

5. The multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device according to claim 1, characterized in that: The connecting structure (4) includes a pull rod (41) and a limiting nut (42). The lower connecting seat (2) is provided with a plurality of first mounting holes for the pull rod (41) to pass through. The upper connecting seat (1) is provided with a plurality of second mounting holes for the pull rod (41) to pass through. The first mounting holes and the second mounting holes correspond one-to-one. The limiting nut (42) is adapted to the pull rod (41).

6. The multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device according to claim 5, characterized in that: The connecting structure (4) further includes a frame buckle plate (43), which has multiple through holes. Each through hole corresponds to a pull rod (41) and is used for the corresponding pull rod (41) to pass through. Each through hole is provided with an elastic tab (431). The side wall of the pull rod (41) is provided with a notch (411) for the elastic tab (431) to be inserted. The elastic tab (431) is provided with a locking block (432). The notch (411) is provided with a slot (412) for the locking block (432) to be inserted.

7. The multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device according to claim 1, characterized in that: The limiting structure (6) includes a first limiting frame (61) and a second limiting frame (62). Multiple first limiting frames (61) are provided and are all fixed to the upper connecting seat (1) by screws. Each first limiting frame (61) is distributed along the circumference of the upper connecting seat (1). Multiple second limiting frames (62) are provided and are all fixed to the lower connecting seat (2) by screws. Each second limiting frame (62) is arranged along the circumference of the upper connecting seat (1).

8. The multi-layer modular prefabricated steel structure energy dissipation and vibration reduction device according to claim 7, characterized in that: The first limiting frame (61) and the second limiting frame (62) are in one-to-one correspondence. The side wall of the second limiting frame (62) is provided with a fastening block (621). The first limiting frame (61) is provided with a sliding groove (611) for the corresponding fastening block (621) on the second limiting frame (62) to be inserted.

9. A multi-layer modular prefabricated steel structure energy dissipation and vibration damping device according to claim 7, characterized in that: Each of the second limiting frame bars (62) has an elastic pressing sheet (63) on its inner side, which is used to abut against the side wall of the energy-consuming module (5).

10. A multi-layer modular prefabricated steel structure energy-dissipating and vibration-damping device according to claim 2, characterized in that: The energy-consuming core plate (53) is configured in a conical shape, and the lower end plate (52) is provided with a conical groove adapted to the energy-consuming core plate (53), and the upper end plate (51) is provided with a conical protrusion adapted to the energy-consuming core plate (53).

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