Composite toggle displacement amplification damping device of self-resetting damper

Abstract

The utility model discloses a compound toggle type displacement amplification damping device of self-resetting damper belongs to structural engineering and structural seismic technology field, the device includes: steel frame structure, install on the steel frame structure's self-resetting damper, toggle type support link and right angle curved link, the one end hinged steel frame structure of self-resetting damper, the other end hinged right angle curved link, the end of first support piece and second support piece hinged steel frame structure, the end of third support piece hinged right angle curved link, right angle curved link hinged on steel frame structure, form the movable triangle plane between second support piece, third support piece, right angle curved link and self-resetting damper, and the line of the hinging point between right angle curved link constitutes the plane for right triangle. The utility model can solve the problem that the both ends relative deformation of existing damper is insufficient, cannot fully dissipate seismic energy, leads to the problem of low shock attenuation efficiency and big post-earthquake residual deformation.

Description

Technical Field

[0001] This utility model belongs to the field of structural engineering and seismic technology, specifically relating to a composite elbow-type displacement amplification and damping device with a self-resetting damper. Background Technology

[0002] With the acceleration of urbanization and the increasing complexity of infrastructure, traditional seismic design, while ensuring life safety, cannot avoid long-term functional interruptions and economic losses caused by post-earthquake structural damage, potentially leading to lengthy and costly post-earthquake repairs. Rapid post-earthquake functional recovery requires structures to be quickly put back into use without large-scale repairs after an earthquake, necessitating innovative technologies such as self-resetting structures, replaceable energy-dissipating components, or smart materials. Simultaneously, seismic mitigation requirements are shifting from simple "collapse resistance" to "performance-based design," emphasizing the use of dampers, seismic isolation bearings, or hybrid control systems to significantly reduce seismic energy input, protect the main structure, and minimize residual deformation. Especially in the construction of super high-rise buildings, lifeline projects, and resilient cities, the application of new seismic isolation and mitigation technologies is of significant strategic importance for enhancing social disaster resilience and reducing secondary disasters and economic risks. Therefore, the demand for rapidly recoverable structural functions and efficient seismic mitigation technologies in the field of seismic engineering is increasingly urgent.

[0003] Traditional seismic damping measures for steel frame structures typically employ diagonal, V-shaped, or herringbone arrangements of displacement dampers to dissipate seismic energy and reduce the structural impact of earthquakes. However, the limited inter-story drift of steel frame structures often results in insufficient relative deformation of the installed displacement dampers, limiting their energy dissipation efficiency and preventing the structure from efficiently and fully dissipating seismic energy. Furthermore, while displacement dampers can improve the structure's energy dissipation capacity to some extent, their residual deformation after an earthquake is significant, making post-earthquake repair relatively difficult. Therefore, traditional damping technologies hinder the current design philosophy of restoring structural function.

[0004] To fully utilize the energy dissipation and vibration reduction capabilities of dampers, innovative installation methods are needed to provide sufficient relative displacement or velocity, thereby creating the necessary large displacement conditions for the dampers to function effectively. The installation method of the damper is a key technology for achieving efficient structural vibration reduction. Furthermore, to effectively control the residual deformation of the damper after an earthquake, self-resetting or replaceable technologies can be employed. Utility Model Content

[0005] The purpose of this invention is to provide a composite elbow-type displacement amplification damping device with a self-resetting damper to solve the problem that existing dampers have insufficient relative deformation, cannot fully dissipate seismic energy, resulting in low damping efficiency and large residual deformation after earthquakes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, a composite elbow-type displacement amplification and damping device with a self-resetting damper is provided, comprising: a steel frame structure, a self-resetting damper installed on the steel frame structure, an elbow-type support rod, and a right-angle curved rod; The elbow-type support member includes a first support member, a second support member, and a third support member, which are hinged to each other. The sum of the angle between the second support member and the horizontal direction and the angle between the third support member and the vertical direction is less than 90°. One end of the self-resetting damper is hinged to the steel frame structure, and the other end is hinged to a right-angled curved rod. The ends of the first and second supports are hinged to the steel frame structure, and the end of the third support is hinged to a right-angled curved rod. The right-angled curved rod is hinged to the steel frame structure. A movable triangular plane is formed between the second support, the third support, the right-angled curved rod, and the self-resetting damper. The plane formed by the lines connecting the hinge points on the right-angled curved rod is a right-angled triangle.

[0007] In some embodiments, the steel frame structure includes: a first frame column, a second frame column, and frame beams; A frame beam connects the top of the first frame column and the second frame column. The frame beam is provided with first frame beam stiffening ribs and second frame beam stiffening ribs. The top of the first frame column is provided with first frame column stiffening ribs, and the bottom of the second frame column is provided with second frame column stiffening ribs.

[0008] In some embodiments, a second frame column ear plate is provided on the second frame column at the position corresponding to the stiffening rib of the second frame column, a frame beam ear plate is provided on the frame beam at the position corresponding to the stiffening rib of the first frame beam, and a beam-column node ear plate is provided at the connection between the first frame column and the frame beam. The position of the beam-column node ear plate corresponds to the position of the stiffening rib of the second frame beam and the stiffening rib of the first frame column.

[0009] In some embodiments, the end of the first support member is hinged to the second frame column lug via a first pin, the end of the second support member is hinged to the beam-column node lug via a sixth pin, the right-angle curved rod is hinged to the frame beam lug via a fourth pin, and the end of the third support member is hinged to the right-angle curved rod via a third pin.

[0010] In some implementations, one end of the self-resetting damper is hinged to the beam-column node lug via a fifth pin, and the other end is hinged to a right-angle curved rod via a second pin.

[0011] In some embodiments, a three-way connecting lug is also included, with the first support member, the second support member, and the third support member respectively hinged to the three-way connecting lug via a ninth pin, an eighth pin, and a seventh pin.

[0012] In some embodiments, the self-resetting damper includes: an inner cylinder, an outer cylinder, a screw, an inner cylinder lug plate, an inner cylinder bottom plate, an outer cylinder lug plate, a disc spring, and an energy-dissipating steel strip; A disc spring is installed on the screw. An outer cylinder lug is fixed to one end of the screw. An inner cylinder bottom plate is nested on the screw. An inner cylinder lug is fixed to the outer surface of one end of the inner cylinder. The other end is fixed to the inner cylinder bottom plate and sleeved on the outside of the screw. The outer cylinder is sleeved on the outside of the inner cylinder and covers the entire screw. One end of the outer cylinder is connected to the outer cylinder lug. An energy-dissipating steel strip is set on the outer cylinder. One side of the energy-dissipating steel strip is fixed to the outer cylinder, and the other side is fixed to the inner cylinder.

[0013] In some embodiments, the outer cylinder lug of the self-resetting damper is hinged to a right-angle curved rod via a second pin, and the inner cylinder lug of the self-resetting damper is hinged to a beam-column node lug via a fifth pin.

[0014] Secondly, an assembly method for a composite toggle-type displacement amplification and damping device with a self-resetting damper includes the following steps: Weld the ear plates of the second frame column to the column base of the second frame column, weld the ear plates of the frame beam to the frame beam, and weld the ear plates of the beam-column joint to the right-angle connection formed by the frame beam and the first frame column. Weld a second frame column stiffening rib to the second frame column at the position corresponding to the second frame column ear plate; weld a first frame beam stiffening rib to the frame beam at the position corresponding to the frame beam ear plate; weld a second frame beam stiffening rib to the frame beam at the position corresponding to the beam-column node ear plate; and weld a first frame column stiffening rib to the first frame column at the position corresponding to the beam-column node ear plate. First, the right-angle curved rod is hinged to the frame beam ear plate through the fourth pin. Then, the outer cylinder ear plate of the self-resetting damper is hinged to the right-angle curved rod through the second pin. At the same time, the inner cylinder ear plate of the self-resetting damper is hinged to the beam-column node ear plate through the fifth pin. The end of the first support member is hinged to the second frame column ear plate via the first pin. The end of the second support member is hinged to the beam-column node ear plate via the sixth pin. The end of the third support member is hinged to the right-angle curved rod via the third pin. Finally, the first, second, and third support members are fixed to the three-way connecting ear plate via the ninth, eighth, and seventh pins to complete the assembly.

[0015] In some implementations, the first frame column, the second frame column, and the frame beam are made of structural steel with a yield strength of not less than 355 MPa.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a composite toggle-type displacement amplification and damping device with a self-resetting damper. A first, second, and third support member are hinged to each other. One end of the self-resetting damper is hinged to the steel frame structure, and the other end is hinged to a right-angled curved rod. The ends of the first and second support members are hinged to the steel frame structure, and the end of the third support member is hinged to the right-angled curved rod, which is hinged to the steel frame structure. A movable triangular plane is formed between the second and third support members, the right-angled curved rod, and the self-resetting damper. The plane formed by the lines connecting the hinge points on the right-angled curved rod is a right-angled triangle. When the steel frame structure undergoes lateral movement, the relative displacement between the two ends of the self-resetting damper is amplified first through the toggle-type support member, and then the relative displacement is amplified a second time through the cooperation of the right-angled curved rod and the third support member. This significantly improves the relative displacement between the two ends of the self-resetting damper, effectively enhancing the energy dissipation capacity of the self-resetting damper and improving the overall damping effect of the structure.

[0017] Furthermore, a frame beam connects the tops of the first and second frame columns. Stiffening ribs for both the first and second frame beams are installed on the frame beam. Stiffening ribs for the first frame column are installed at the top, and stiffening ribs for the second frame column are installed at the bottom. These stiffening ribs effectively improve the local stiffness and bearing capacity of the frame beam-column joints and column bases. The steel frame serves as the main lateral force resisting structure, providing a stable support platform for the self-resetting damper, elbow-type support members, and right-angle curved rods, effectively improving the overall lateral stiffness of the structure and ensuring its stability under seismic loading.

[0018] Furthermore, a disc spring is installed on the screw of the self-resetting damper. One end of the screw is fixed to an outer cylinder lug plate, and the inner cylinder bottom plate is nested on the screw. One end of the inner cylinder has its outer surface fixed to the inner cylinder lug plate, while the other end is sleeved on the outside of the screw and connected to the inner cylinder bottom plate. The outer cylinder is sleeved on the outside of the inner cylinder and covers the entire screw. One end of the outer cylinder is connected to the outer cylinder lug plate, and an energy-dissipating steel strip is installed on the outer cylinder. This structure can effectively control the residual deformation of the structure after an earthquake. The self-resetting damper can exert its energy-dissipating and vibration-damping effect through the energy-dissipating steel strip, and the disc spring ensures that the residual deformation of the damper after an earthquake is controllable. Structural damage is mainly concentrated on the energy-dissipating steel strip of the self-resetting damper, making damage easy to detect after an earthquake and allowing for rapid replacement of damaged components. This achieves excellent energy dissipation performance and rapid functional recovery capability of the structure.

[0019] This utility model provides an assembly method for a composite elbow-type displacement amplification and damping device with a self-resetting damper. The steel frame structure, elbow-type support rod, right-angle curved rod and self-resetting damper are all connected by ear plates and pins. The structure is simple and easy to install. It does not require modification of the traditional steel frame structure. The connection method is also easy to disassemble after an earthquake. There is no wet work on site. The construction period is short and the adaptability is strong. Attached Figure Description

[0020] Figure 1 Elevation view of the composite elbow-type displacement amplification and vibration reduction device with self-resetting damper provided in the embodiment of this utility model; Figure 2 A plan view of the steel frame structure provided in an embodiment of this utility model; Figure 3 A schematic diagram of the structure of the composite elbow-type displacement amplification and damping device with a single-span self-resetting damper provided in this embodiment of the utility model; Figure 4 A schematic diagram of the structure of the self-resetting damper provided in this embodiment of the utility model; Figure 5 A deformation mechanism diagram of a composite elbow-type displacement amplification and damping device with a single-span self-resetting damper provided in an embodiment of this utility model.

[0021] In the diagram, 1. First frame column; 2. Second frame column; 3. Frame beam; 4. Self-resetting damper; 5. First support member; 6. Second support member; 7. Third support member; 8. Right-angle curved rod; 11. Second frame column lug; 12. Frame beam lug; 13. Beam-column joint lug; 14. Three-way connection lug; 15. Second frame column stiffening rib; 16. First frame beam stiffening rib; 17. First frame column stiffening rib. ; 18. Second frame beam stiffening rib; 31. Inner cylinder; 32. Outer cylinder; 33. Screw rod; 34. Inner cylinder ear plate; 35. Inner cylinder bottom plate; 36. Outer cylinder ear plate; 37. Disc spring; 38. Energy-dissipating steel strip; 41. First pin; 42. Second pin; 43. Third pin; 44. Fourth pin; 45. Fifth pin; 46. Sixth pin; 47. Seventh pin; 48. Eighth pin; 49. Ninth pin. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. The described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example 1 This embodiment provides a composite toggle-type displacement amplification and damping device with a self-resetting damper. In a traditional steel frame structure, the self-resetting damper is installed using a composite toggle-type method combining toggle-type support members and right-angle curved rods. One end of the self-resetting damper is connected to the frame, and the other end is connected to the right-angle curved rod. Hinged connections are achieved between the toggle-type support members and between the members and the main steel frame structure using pins and lugs, ensuring that rotational behavior between the members occurs only in a plane. The structure is simple and easy to install. To accommodate the composite toggle-type installation method, a self-resetting damper is used, employing an energy-dissipating steel strip to provide energy dissipation and a disc spring to provide reset capability, thereby achieving a highly efficient energy-dissipating and resilient damping structure with controllable residual deformation.

[0028] like Figure 1 and Figure 2As shown, the device includes: a steel frame structure, a self-resetting damper 4 installed on the steel frame structure, a toggle-type support rod and a right-angle curved rod 8. The above components together constitute an effective damping system.

[0029] The toggle-joint support rod includes a first support member 5, a second support member 6, and a third support member 7, which are hinged to each other. One end of the self-resetting damper 4 is hinged to a steel frame structure, and the other end is hinged to a right-angled curved rod 8. The ends of the first support member 5 and the second support member 6 are hinged to the steel frame structure, and the end of the third support member 7 is hinged to the right-angled curved rod 8. The right-angled curved rod 8 is hinged to the steel frame structure. A movable triangular plane is formed between the second support member 6, the third support member 7, the right-angled curved rod 8, and the self-resetting damper 4. The plane formed by the lines connecting the hinge points on the right-angled curved rod 8 is a right-angled triangle. This device utilizes the geometric characteristics of the toggle-joint support rod and the right-angled curved rod to increase the relative displacement of the self-resetting damper through a secondary amplification mechanism when the structure undergoes lateral displacement, thereby improving its energy dissipation capacity. Based on the lever principle and triangular stability, it amplifies the displacement by changing the angle of the rods while ensuring the stability and reset capability of the structure. In terms of effectiveness, the technology in this embodiment can significantly improve the vibration reduction effect of the structure, especially under lateral loads such as earthquakes, it can effectively control the residual deformation of the structure and achieve rapid recovery. In other embodiments, the displacement amplification factor can be optimized by adjusting the length of the support members and the angle of the right-angle curved rod to meet the specific needs of different structures and sites.

[0030] The steel frame structure includes: a first frame column 1, a second frame column 2, and a frame beam 3; the frame beam 3 connects the top ends of the first frame column 1 and the second frame column 2, and the frame beam 3 is provided with a first frame beam stiffener 16 and a second frame beam stiffener 18. A first frame column stiffener 17 is provided at the top end of the first frame column 1, and a second frame column stiffener 15 is provided at the bottom end of the second frame column 2. The stiffeners enhance the local bearing capacity of the frame columns and frame beams, improving the lateral stiffness of the entire frame structure. The stiffeners improve the local bending performance of the components by increasing the moment of inertia and constraining section deformation. In terms of effect, the technology in this embodiment can effectively limit the lateral displacement of the frame structure under seismic loading, protecting the main structure from severe damage, while providing a more stable working environment for the self-resetting damper. In other embodiments, the overall seismic performance of the frame structure can be further improved by using higher strength steel or increasing the number and size of the stiffeners.

[0031] like Figure 2As shown, a second frame column ear plate 11 is provided on the second frame column 2 at the position corresponding to the second frame column stiffening rib 15, and a frame beam ear plate 12 is provided on the frame beam 3 at the position corresponding to the first frame beam stiffening rib 16. A beam-column node ear plate 13 is provided at the connection between the first frame column 1 and the frame beam 3, and the position of the beam-column node ear plate 13 corresponds to the position of the second frame beam stiffening rib 18 and the first frame column stiffening rib 17. The ear plate provides hinge points for each component, ensuring the normal operation of the composite elbow-type displacement amplification mechanism. The ear plate, through cooperation with the pin, realizes the hinged connection between the components, allowing rotation without generating shear or tensile stress. In terms of effect, the technology in this embodiment simplifies the installation process, improves the flexibility and seismic performance of the structure, and facilitates post-earthquake inspection and maintenance. In other embodiments, the load-bearing capacity and connection reliability can be improved by optimizing the shape and size of the ear plate.

[0032] like Figure 3 As shown, the end of the first support member 5 is hinged to the second frame column ear plate 11 via the first pin 41; the end of the second support member 6 is hinged to the beam-column node ear plate 13 via the sixth pin 46; the right-angle curved rod 8 is hinged to the frame beam ear plate 12 via the fourth pin 44; and the end of the third support member 7 is hinged to the right-angle curved rod 8 via the third pin 43. The pin, as the core component of the hinge point, ensures free rotation between the components while transmitting the necessary load. The pin, through its cooperation with the ear plate, achieves the hinged connection between the components, which is the basis for the normal operation of the composite elbow-type displacement amplification mechanism. In terms of its effect, the technology in this embodiment ensures the reliability and stability of the composite elbow-type displacement amplification mechanism composed of the elbow-type support member and the right-angle curved rod 8, enabling it to accurately amplify the relative displacement at both ends of the damper under seismic action and improve the energy dissipation efficiency of the damper. In other embodiments, the load-bearing capacity and durability can be improved by selecting pins of different diameters and materials to adapt to more complex operating environments.

[0033] It also includes a three-way connecting lug 14, with the first support member 5, the second support member 6, and the third support member 7 hinged to the three-way connecting lug 14 via the seventh pin 47, the eighth pin 48, and the ninth pin 49, respectively. The three-way connecting lug 14 serves as the intersection point of the elbow-type support members, connecting to each support member via pins to form a stable hinge network. Based on the mechanical principle of multi-point hinges, it achieves free rotation between members through the cooperation of pins and lugs, while maintaining structural integrity. In terms of effectiveness, the technology in this embodiment ensures coordinated movement of the composite elbow-type displacement amplification mechanism, improving the stability and reliability of the entire device. In other embodiments, the connection between members can be optimized by introducing prestress or fine-tuning the position of the lugs to adapt to specific structural layouts and design requirements.

[0034] like Figure 4As shown in the figure, AA is a section symbol. The self-resetting damper 4 includes: an inner cylinder 31, an outer cylinder 32, a screw 33, an inner cylinder ear plate 34, an inner cylinder bottom plate 35, an outer cylinder ear plate 36, a disc spring 37, and an energy-dissipating steel strip 38. The disc spring 37 is installed on the screw 33. The outer cylinder ear plate 36 is fixed at one end of the screw 33. The inner cylinder bottom plate 35 is nested on the screw 33. The inner cylinder ear plate 34 is fixed on the outer surface of one end of the inner cylinder 31. The other end is sleeved on the outside of the screw 33 and connected to the inner cylinder bottom plate 35. The outer cylinder 32 is sleeved on the outside of the inner cylinder 31 and covers the entire screw 33. One end of the outer cylinder 32 is connected to the outer cylinder ear plate 36. The energy-dissipating steel strip 38 is installed on the outer cylinder 32. One side of the energy-dissipating steel strip (38) is fixed on the outer cylinder (32), and the other side is fixed on the inner cylinder 31. The self-resetting damper uses disc springs and energy-dissipating steel strips as core components, which can absorb energy and automatically reset under seismic action. The disc spring provides the restoring force through compression and release, while the energy-dissipating steel strip dissipates seismic energy through plastic deformation. In terms of effectiveness, it can effectively control residual deformation of the structure while improving its energy dissipation capacity, achieving ductile damping and rapid post-earthquake functional recovery. In other embodiments, the damper performance can be optimized by adjusting the stiffness of the disc spring or the shape and size of the energy-dissipating steel strip to adapt to seismic loads of different intensities and structural requirements. Once a strong earthquake occurs, structural damage is mainly concentrated in the self-resetting damper 4, while other components remain in an elastic or slightly plastic state. The damper can be quickly replaced, thus enabling rapid structural functional recovery. The aforementioned self-resetting damper 4 can also be replaced with a traditional metal displacement damper.

[0035] The outer ear plate 36 of the self-resetting damper 4 is hinged to the right-angle curved rod 8 via the second pin 42, and the inner ear plate 34 of the self-resetting damper 4 is hinged to the beam-column node ear plate 13 via the fifth pin 45, ensuring that the self-resetting damper can capture the deformation in the node area. This connection method ensures that the self-resetting damper can generate corresponding axial deformation with the rotation of the right-angle curved rod, while maintaining coordinated movement with the frame structure. Based on the energy dissipation mechanism and reset principle of the damper, it combines damping and self-resetting functions through connection with the composite elbow-type displacement amplification mechanism. In terms of effect, this embodiment can effectively control the residual deformation of the structure while improving its energy dissipation capacity, achieving tough damping and rapid recovery of the structure. In other embodiments, the working state of the damper can be optimized by adjusting the position and size of the pin to adapt to different types of structures and seismic loads.

[0036] like Figure 5As shown, the working principle of the composite toggle-type displacement amplification damping device provided in this embodiment is as follows: Under earthquake action, the working process of the composite toggle-type displacement amplification self-resetting damper steel frame structure is as follows: When the structure undergoes lateral displacement, the first support member 5, the second support member 6, and the third support member 7 in the toggle-type support members will change their angles due to the relative movement between the frame columns and frame beams. This change is captured and amplified by the right-angle curved rod 8 and transmitted to the self-resetting damper 4. The energy-dissipating steel strip 38 of the self-resetting damper 4 begins to plastically deform, absorbing earthquake energy. At the same time, the disc spring 37 is compressed, storing energy for post-earthquake reset. After the earthquake, the elastic force of the disc spring 37 causes the self-resetting damper 4 and the entire composite toggle-type displacement amplification mechanism to spring back to the initial position, realizing the self-resetting of the structure and the rapid recovery of its function. Throughout the entire process, the composite toggle-type displacement amplification mechanism and the self-resetting damper work together. The plastic damage deformation of the structure is mainly concentrated in the self-resetting damper 4, while the other components remain elastic or slightly plastic. This effectively controls the lateral displacement and residual deformation of the structure, improves the seismic performance and toughness of the structure, and ensures the safety and availability of the structure after the earthquake.

[0037] Therefore, in summary, the displacement amplification device provided in this embodiment has the following advantages: (1) The relative displacement of the two ends of the damper is amplified by the combination of elbow-type support rod and right-angle curved rod, which significantly improves the displacement amplification effect of the damper. When the structure undergoes lateral displacement, the elbow-type support rod is used to amplify the displacement once, and then the right-angle curved rod connected to the support rod amplifies the relative displacement of the damper again. This can effectively improve the energy dissipation capacity of the damper, thereby improving the overall vibration reduction effect of the structure.

[0038] (2) Replacing the traditional displacement damper with self-resetting technology can effectively control the residual deformation of the structure after an earthquake. The self-resetting damper exerts its energy dissipation and vibration reduction effect through the energy-dissipating steel belt, and the residual deformation of the structure after an earthquake is controllable through the disc spring. During the design, it is sufficient to ensure that the reset force of the reset component is not less than the yield force of the energy-dissipating component. At the same time, it can provide large displacement deformation conditions for the self-resetting damper, so that the damper can have good energy dissipation capacity.

[0039] (3) It can provide additional lateral stiffness to the structure and limit the lateral displacement of the structure, so as to effectively improve the service height of the steel frame structure. Under frequent earthquakes, all components remain elastic; under rare earthquakes, the dampers gradually enter the elastoplastic state to dissipate earthquake energy, and the remaining components remain elastic or slightly develop plasticity. After the earthquake, the structure can be quickly restored by replacing the dampers; under extremely rare earthquakes, the dampers further develop plasticity, and the ends of the frame beams also begin to enter plasticity, so that the structure does not collapse.

[0040] (4) The elbow-type support members are connected to the self-resetting damper and frame members through ear plate pins. The structure is simple and easy to install. It does not require any modification to the traditional steel frame main structure. The node connection structure and design method are well known to designers and researchers. The ear plate pin connection form is also easy to disassemble after an earthquake. The operation is simple and the installation is convenient. There is no wet work on site and the construction period is short. It has strong adaptability and a wide range of applications.

[0041] (5) The installation method of the composite elbow-type displacement amplification self-resetting damper can also be used for the reinforcement and upgrading of traditional structures, which can significantly improve the seismic performance of the original structure. The main structure of the steel frame basically maintains an elastic state under normal use and moderate to major earthquakes, so its energy consumption capacity requirement is low. High-strength steel can be used, thereby promoting the application of high-strength steel in high-intensity seismic fortification areas.

[0042] Example 2 This embodiment provides an assembly method for a composite elbow-type displacement amplification and damping device with a self-resetting damper, including the following steps: First, second frame column ear plates 11 need to be welded to the column base of the second frame column 2, and frame beam ear plates 12 need to be welded to the corresponding positions on the frame beam 3. Beam-column joint ear plates 13 need to be installed at the beam-column joint where the frame beam 3 intersects with the first frame column 1. Next, to strengthen the structural strength of these connection points, second frame column stiffening ribs need to be welded to the second frame column corresponding to the second frame column ear plates, and first frame beam stiffening ribs need to be welded to the frame beam corresponding to the frame beam ear plates 12. Second frame beam stiffening ribs and first frame column stiffening ribs need to be added to the frame beam and the first frame column at the corresponding positions of the beam-column joint ear plates 13, respectively.

[0043] Subsequently, the right-angle curved rod 8 is hinged to the frame beam ear plate 12 via the fourth pin 44. The outer ear plate of the self-resetting damper 4 is connected to the right-angle curved rod 8 via the second pin 42, while the inner ear plate of the self-resetting damper is hinged to the beam-column node ear plate 13 via the fifth pin 46. The first support member 5 of the elbow-type support member is hinged to the second frame column ear plate via the first pin 41, the second support member 6 is hinged to the beam-column node ear plate 13 via the sixth pin 46, and the third support member 7 is hinged to the right-angle curved rod 8 via the third pin 43. This ensures that when the structure is subjected to seismic forces, the relative displacement at both ends of the damper can be amplified through the combined action of the elbow-type support member and the right-angle curved rod, thereby effectively improving energy dissipation efficiency and controlling residual deformation after the earthquake.

[0044] For material selection, it is recommended that the first frame column 1, the second frame column 2, and the frame beam 3 be made of structural steel with a yield strength of not less than 355MPa to ensure that the device has excellent structural stability and load-bearing capacity, making it particularly suitable for use in high-intensity seismic fortification areas.

[0045] Through the design of this embodiment, the steel frame structure can remain elastic under frequent earthquakes, while under rare earthquakes, the main damage is concentrated on the self-resetting damper 4, and the remaining structural components remain elastic or only slightly develop plasticity. This means that the structure can quickly restore its function after an earthquake by simply replacing the damper, thereby reducing the building's maintenance costs and recovery time, and improving the safety and economy of the structure.

[0046] In summary, the composite elbow-type displacement amplification self-resetting damper steel frame structure and its assembly method proposed in this invention significantly improve the seismic performance of building structures. It achieves efficient displacement amplification through elbow-type support members and right-angle curved rods, increasing the structure's energy dissipation capacity and self-resetting characteristics. Furthermore, this design is simple and easy to install, requiring no major modifications to the traditional steel structure. It is suitable for both new construction and the reinforcement and renovation of existing structures, providing strong protection for structural safety in high-intensity seismic fortification zones. It also promotes the application of high-strength steel, reducing the overall weight and cost of the structure, and has broad practical value and market prospects.

[0047] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All changes within the scope of this utility model or equivalent to this utility model are included in this utility model.

Claims

1. A composite toggle-type displacement amplification and vibration reduction device with a self-resetting damper, characterized in that, include: Steel frame structure, self-resetting damper (4) installed on the steel frame structure, elbow-type support rod and right-angle curved rod (8). The elbow-type support rod includes a first support member (5), a second support member (6) and a third support member (7), which are hinged to each other. The sum of the angle between the second support member (6) and the horizontal direction and the angle between the third support member (7) and the vertical direction is less than 90°. One end of the self-resetting damper (4) is hinged to the steel frame structure, and the other end is hinged to the right-angled rod (8). The ends of the first support member (5) and the second support member (6) are hinged to the steel frame structure, and the end of the third support member (7) is hinged to the right-angled rod (8). The right-angled rod (8) is hinged to the steel frame structure. The second support member (6), the third support member (7), the right-angled rod (8) and the self-resetting damper (4) form a movable triangular plane. The plane formed by the lines connecting the hinge points on the right-angled rod (8) is a right-angled triangle.

2. The composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 1, characterized in that, The steel frame structure includes: a first frame column (1), a second frame column (2), and a frame beam (3); A frame beam (3) is connected between the top of the first frame column (1) and the second frame column (2). The first frame beam stiffening rib (16) and the second frame beam stiffening rib (18) are provided on the frame beam (3). The top of the first frame column (1) is provided with a first frame column stiffening rib (17), and the bottom of the second frame column (2) is provided with a second frame column stiffening rib (15).

3. The composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 2, characterized in that, The second frame column ear plate (11) is set on the second frame column (2) at the position corresponding to the second frame column stiffening rib (15). The frame beam ear plate (12) is set on the frame beam (3) at the position corresponding to the first frame beam stiffening rib (16). The beam-column node ear plate (13) is set at the connection between the first frame column (1) and the frame beam (3). The position of the beam-column node ear plate (13) corresponds to the position of the second frame beam stiffening rib (18) and the first frame column stiffening rib (17).

4. The composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 3, characterized in that, The end of the first support member (5) is hinged to the second frame column ear plate (11) via the first pin (41), and the end of the second support member (6) is hinged to the beam-column node ear plate (13) via the sixth pin (46).

5. The composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 4, characterized in that, The right-angle curved rod (8) is hinged to the frame beam ear plate (12) through the fourth pin (44), and the end of the third support (7) is hinged to the right-angle curved rod (8) through the third pin (43).

6. The composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 5, characterized in that, One end of the self-resetting damper (4) is hinged to the beam-column node ear plate (13) via the fifth pin (45), and the other end is hinged to the right-angle curved rod (8) via the second pin (42).

7. The composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 1, characterized in that, It also includes a three-way connecting lug (14), and the first support (5), the second support (6) and the third support (7) are hinged to the three-way connecting lug (14) by the ninth pin (49), the eighth pin (48) and the seventh pin (47) respectively.

8. A composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 6, characterized in that, The self-resetting damper (4) includes: an inner cylinder (31), an outer cylinder (32), a screw (33), an inner cylinder ear plate (34), an inner cylinder bottom plate (35), an outer cylinder ear plate (36), a disc spring (37), and an energy-dissipating steel belt (38). A disc spring (37) is provided on the screw (33). One end of the screw (33) is fixed with an outer cylinder ear plate (36). The inner cylinder bottom plate (35) is nested on the screw (33). One end of the inner cylinder (31) is fixed with an inner cylinder ear plate (34) on its outer surface. The other end is fixed with the inner cylinder bottom plate (35) and sleeved on the outside of the screw (33). The outer cylinder (32) is sleeved on the outside of the inner cylinder (31) and covers the entire screw (33). One end of the outer cylinder (32) is connected to the outer cylinder ear plate (36). An energy-consuming steel strip (38) is provided on the outer cylinder (32). One side of the energy-consuming steel strip (38) is fixed on the outer cylinder (32), and the other side is fixed on the inner cylinder (31).

9. A composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 8, characterized in that, The outer cylinder ear plate (36) of the self-resetting damper (4) is hinged to the right-angle curved rod (8) through the second pin (42), and the inner cylinder ear plate (34) of the self-resetting damper (4) is hinged to the beam-column node ear plate (13) through the fifth pin (45).

10. A composite elbow-type displacement amplification and damping device with a self-resetting damper according to claim 9, characterized in that, The first frame column (1), the second frame column (2), and the frame beam (3) are structural steel with a yield strength of not less than 355 MPa.

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