Composite toggle type displacement amplification damping device of self-resetting damper and assembly method

Abstract

The invention discloses a composite toggle type displacement amplification damping device of a self-resetting damper and an assembly method, and belongs to the technical field of structural engineering and structural earthquake resistance, the device comprises a steel frame structure, the self-resetting damper installed on the steel frame structure, a toggle type supporting rod piece and a right-angle curved bar; one end of the self-resetting damper is hinged to the steel frame structure, the other end of the self-resetting damper is hinged to a right-angle curved bar, the end of the first supporting piece and the end of the second supporting piece are hinged to the steel frame structure, and the end of the third supporting piece is hinged to the right-angle curved bar which is hinged to the steel frame structure. A movable triangular plane is formed among the second supporting piece, the third supporting piece, the right-angle curved bar and the self-resetting damper, and a plane formed by connecting lines between hinge points on the right-angle curved bar is a right triangle. The damper can solve the problems of low damping efficiency and large post-earthquake residual deformation caused by insufficient relative deformation of the two ends of an existing damper and incapability of fully dissipating earthquake energy.

Description

Technical Field

[0001] The invention belongs to the technical fields of structural engineering and structural earthquake resistance, and particularly relates to a composite toggle-type displacement amplifying shock-absorbing device of a self-resetting damper and an assembly method thereof. Background Art

[0002] With the acceleration of urbanization and the increasing complexity of infrastructure, traditional seismic design, while ensuring life safety, cannot avoid long-term functional disruption and economic losses caused by post-earthquake structural damage, potentially leading to lengthy and costly post-earthquake repairs. Rapid post-earthquake functional recovery requires that structures can be quickly put back into service after an earthquake without requiring extensive repairs. This requires innovative technologies such as self-resetting structures, replaceable energy-absorbing components, or smart materials. Simultaneously, the demand for seismic mitigation is shifting from simple "collapse prevention" to "performance-based design," emphasizing the use of dampers, isolation bearings, or hybrid control systems to significantly reduce seismic energy input, protect the main structure, and minimize residual deformation. The application of new seismic mitigation and isolation technologies, particularly in super-high-rise buildings, lifeline projects, and resilient urban development, holds significant strategic significance for enhancing social resilience and reducing secondary disasters and economic risks. Therefore, the demand for rapid structural functional recovery and efficient seismic mitigation technologies in the field of seismic engineering structures is increasingly urgent.

[0003] Traditional seismic mitigation measures for steel frame structures generally employ displacement dampers arranged in diagonal, V-shaped, or herringbone configurations to dissipate seismic energy and reduce the effects of structural earthquakes. However, the limited inter-story lateral displacement of steel frame structures often results in insufficient relative deformation of the installed displacement dampers, limiting the dampers' energy dissipation and shock absorption efficiency, rendering the structure unable to efficiently and fully dissipate seismic energy. Furthermore, while displacement dampers can improve the structure's energy dissipation capacity to a certain extent, their post-earthquake residual deformation is large, making post-earthquake repair relatively difficult. Therefore, traditional seismic mitigation technology hinders the current design concept of restorable structural functions.

[0004] To fully utilize the damper's energy-dissipating and shock-absorbing properties, innovative damper mounting methods are necessary to ensure sufficient relative displacement or velocity, thereby providing the necessary large displacement conditions for the damper to fully function. The damper's mounting method is a key technology for achieving efficient structural shock absorption. Furthermore, to effectively control the damper's post-earthquake residual deformation, self-resetting or replaceable technologies can be employed. Summary of the Invention

[0005] The purpose of the present invention is to provide a composite toggle-type displacement amplification shock-absorbing device and an assembly method for a self-resetting damper, so as to solve the problem that the existing damper has insufficient relative deformation and cannot fully dissipate earthquake energy, resulting in low shock absorption efficiency and large residual deformation after the earthquake.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a composite toggle-type displacement amplification shock absorbing device of a self-resetting damper comprises: a steel frame structure, a self-resetting damper mounted on the steel frame structure, a toggle-type support rod, and a right-angle curved rod; The toggle support rod comprises a first support member, a second support member and a third support member, the first support member, the second support member and the third support member are hinged to each other, and 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 the right-angled curved rod. The ends of the first support member and the second support member are hinged to the steel frame structure, and the end of the third support member is hinged to the 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 member, the third support member, the right-angled curved rod and the self-resetting damper, and the plane formed by the connecting lines between 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 a frame beam; A frame beam is connected between the top ends 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 first frame column stiffening rib is provided at the top end of the first frame column, and the second frame column stiffening rib is provided at the bottom end of the second frame column.

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

[0009] In some embodiments, the end of the first support member is hinged to the second frame column ear plate through the first pin, the end of the second support member is hinged to the beam-column node ear plate through the sixth pin, the right-angle curved link is hinged to the frame beam ear plate through the fourth pin, and the end of the third support member is hinged to the right-angle curved link through the third pin.

[0010] In some embodiments, one end of the self-resetting damper is hinged to the beam-column node ear plate through a fifth pin, and the other end is hinged to the right-angle curved link through a second pin.

[0011] In some embodiments, a three-way connecting ear plate is further included, and the first support member, the second support member, and the third support member are hingedly connected to the three-way connecting ear plate through a ninth pin, an eighth pin, and a seventh pin, respectively.

[0012] In some embodiments, the self-resetting damper includes: an inner cylinder, an outer cylinder, a screw, an inner cylinder ear plate, an inner cylinder bottom plate, an outer cylinder ear plate, a disc spring, and an energy-absorbing steel belt; A disc spring is provided on the screw, one end of the screw is fixed to the outer tube ear plate, the inner tube bottom plate is nested on the screw, the outer surface of one end of the inner tube is fixed to the inner tube ear plate, and the other end is fixed to the inner tube bottom plate and sleeved on the outside of the screw, the outer tube is sleeved on the outside of the inner tube and covers the entire screw, one end of the outer tube is connected to the outer tube ear plate, and an energy-absorbing steel belt is provided on the outer tube, one side of the energy-absorbing steel belt is fixed to the outer tube, and the other side is fixed to the inner tube.

[0013] In some embodiments, the outer tube ear plate of the self-resetting damper is hinged to the right-angled curved link via a second pin shaft, and the inner tube ear plate of the self-resetting damper is hinged to the beam-column node ear plate via a fifth pin shaft.

[0014] In a second aspect, a method for assembling a composite toggle-type displacement amplifying shock absorbing device with a self-resetting damper comprises the following steps: Welding the second frame column ear plate to the column foot of the second frame column, welding the frame beam ear plate to the frame beam, and welding the beam-column node ear plate to the right-angle connection formed by the frame beam and the first frame column; Welding the second frame column stiffening ribs on the second frame column at the position corresponding to the second frame column ear plate, welding the first frame beam stiffening ribs on the frame beam at the position corresponding to the frame beam ear plate, welding the second frame beam stiffening ribs on the frame beam at the position corresponding to the beam-column node ear plate, and welding the first frame column stiffening ribs on the first frame column at the position corresponding to the beam-column node ear plate; First, hinge the right-angled curved rod to the frame beam lug through the fourth pin, then hinge the outer tube lug of the self-resetting damper to the right-angled curved rod through the second pin, and at the same time, hinge the inner tube lug of the self-resetting damper to the beam-column node lug through the fifth pin; Hinge the end of the first support member to the second frame column ear plate through the first pin, hinge the end of the second support member to the beam-column node ear plate through the sixth pin, hinge the end of the third support member to the right-angle curved rod through the third pin, and finally fix the first support member, the second support member and the third support member to the three-way connection ear plate through the ninth pin, the eighth pin and the seventh pin to complete the assembly.

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

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a composite elbow-jointed displacement amplifying shock-absorbing device for a self-resetting damper, wherein a first support member, a second support member, and a 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 support member and the second support member are hinged to the steel frame structure, the end of the third support member is hinged to the 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 member, the third support member, the right-angled curved rod, and the self-resetting damper, and the plane formed by the connecting lines between the hinge points on the right-angled curved rod is a right-angled triangle. When the steel frame structure moves laterally, the relative displacement of the two ends of the self-resetting damper can be amplified once by the elbow-jointed support member, and then the relative displacement of the two ends of the self-resetting damper can be amplified twice by the right-angled curved rod and the third support member. This can significantly improve the relative displacement of the two ends of the self-resetting damper, effectively improve the energy consumption capacity of the self-resetting damper, and improve the shock absorption effect of the entire structure.

[0017] Furthermore, a frame beam is connected between the tops of the first and second frame columns, and first and second frame beam stiffening ribs are provided on the frame beam. The first frame column stiffening rib is provided at the top of the first frame column, and the second frame column stiffening rib is provided at the bottom of the second frame column. These stiffening ribs can effectively increase the local stiffness and bearing capacity of the frame beam-column joints and column bases. Furthermore, the steel frame serves as the primary lateral force-resisting structure, providing a stable support platform for the self-resetting damper, elbow-jointed support rods, and right-angle curved rods. This effectively improves the lateral stiffness of the overall structure and ensures its stability under earthquake action.

[0018] Furthermore, a disc spring is provided on the screw of the self-resetting damper. One end of the screw secures the outer tube ear plate, the inner tube bottom plate is nested on the screw, one end of the inner tube secures the inner tube ear plate on its outer surface, and the other end is sleeved on the outside of the screw and connected to the inner tube bottom plate. The outer tube sleeves on the outside of the inner tube and covers the entire screw, one end of the outer tube is connected to the outer tube ear plate, and an energy-absorbing steel belt is provided on the outer tube. This structure can effectively control the post-earthquake residual deformation of the structure. The self-resetting damper can achieve an energy-absorbing and shock-absorbing effect through the energy-absorbing steel belt, and the disc spring makes the post-earthquake residual deformation of the damper controllable. Structural damage is mainly concentrated in the energy-absorbing steel belt of the self-resetting damper. Damage is easy to detect after an earthquake, and damaged components can be quickly replaced, thereby achieving excellent structural energy-absorbing performance and rapid functional recovery capabilities.

[0019] The present invention provides an assembly method for a composite toggle-type displacement amplifying shock-absorbing device with a self-resetting damper, wherein a steel frame structure, a toggle-type support rod, a right-angle curved rod and a self-resetting damper are all connected by ear plates and pin shafts. The structure is simple and the installation is convenient. No modification of the traditional steel frame structure is required. The connection method is also convenient for post-earthquake disassembly. There is no on-site wet work, the construction period is short and the adaptability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An elevational view of a composite toggle-type displacement amplifying shock absorbing device with a self-resetting damper provided by an embodiment of the present invention; Figure 2 A schematic plan view of a steel frame structure provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a composite toggle-type displacement amplifying shock absorbing device with a single-span self-resetting damper provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a self-resetting damper provided in an embodiment of the present invention; Figure 5 A diagram showing the deformation mechanism of a composite toggle-type displacement amplifying shock-absorbing device with a single-frame, single-span self-resetting damper provided in an embodiment of the present invention.

[0021] In the figure, 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 node 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 tube; 32. Outer tube; 33. Screw; 34. Inner tube ear plate; 35. Inner tube bottom plate; 36. Outer tube ear plate; 37. Disc spring; 38. Energy-absorbing steel belt; 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 DESCRIPTION

[0022] Hereinafter, only certain exemplary embodiments are briefly described, and the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0025] In the present invention, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connected," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Example 1 This embodiment provides a composite elbow-joint displacement amplifying shock-absorbing device of a self-resetting damper, in which the self-resetting damper is installed in a traditional steel frame structure by a composite elbow-joint method in which an elbow-joint support rod and a right-angle curved rod act together. One end of the self-resetting damper is connected to the frame, and the other end is connected to the right-angle curved rod. Pin lugs are used to realize hinged connection between the elbow-joint support rods and between the rods and the main body of the steel frame structure to ensure that only in-plane rotation occurs between the rods. The structure is simple and easy to install. In order to adapt to the composite elbow-joint installation method, a self-resetting damper with an energy-absorbing steel belt to provide energy absorption capacity and a disc spring to provide reset capacity is adopted, thereby realizing a tough shock-absorbing structure with efficient energy absorption and controllable residual deformation.

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

[0029] The toggle-jointed 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 self-resetting damper 4 is hinged at one end to the steel frame structure and at the other end to a right-angled curved rod 8. The ends of the first and second support members 5, 6 are hinged to the steel frame structure, while the end of the third support member 7 is hinged to the right-angled curved rod 8, which is hinged to the steel frame structure. A movable triangular plane is formed between the second and third support members 6, 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 triangle. This device utilizes the geometric properties of the toggle-jointed 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 principle of leverage and triangular stability, it amplifies displacement by changing the rod angle while ensuring the stability and reset ability of the structure. In terms of effectiveness, the technology in this embodiment can significantly enhance the structure's shock absorption, particularly under lateral loads such as earthquakes. It can effectively control residual deformation 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 quarter-curve rods 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 tops of the first and second frame columns 1 and 2 are connected by the frame beam 3, and the frame beam 3 is provided with a first frame beam stiffener 16 and a second frame beam stiffener 18. The top of the first frame column 1 is provided with a first frame column stiffener 17, and the bottom of the second frame column 2 is provided with a second frame column stiffener 15. The provision of stiffeners enhances the local load-bearing capacity of the frame columns and frame beams, improving the lateral stiffness of the entire frame structure. The stiffeners improve the local bending resistance of the components by increasing the moment of inertia of the section and constraining cross-sectional deformation. In terms of effect, the technology in this embodiment can effectively limit the lateral displacement of the frame structure under earthquake action, protecting the main structure from serious damage, while also 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 stiffeners.

[0031] like Figure 2As shown, a second frame column ear plate 11 is provided on the second frame column 2 at a position corresponding to the second frame column stiffening rib 15, a frame beam ear plate 12 is provided on the frame beam 3 at a position corresponding to the first frame beam stiffening rib 16, and a beam-column node ear plate 13 is provided 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. The provision of the ear plate provides a hinge point for each component, ensuring the normal operation of the composite elbow-type displacement amplification mechanism. The ear plate realizes an articulated connection between the components by cooperating with the pin shaft, 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 shape and size of the ear plate can also be optimized to improve its bearing capacity and connection reliability.

[0032] like Figure 3 As shown, the end of the first support member 5 is hinged to the second frame column lug 11 via a first pin 41. The end of the second support member 6 is hinged to the beam-column node lug 13 via a sixth pin 46. The right-angled curved rod 8 is hinged to the frame beam lug 12 via a fourth pin 44. The end of the third support member 7 is hinged to the right-angled curved rod 8 via a third pin 43. As the core component of the hinge point, the pin ensures free rotation between the components while transmitting the necessary load. The pin, in conjunction with the lug, achieves an articulated connection between the components, which is the foundation for the proper functioning of the composite toggle displacement amplification mechanism. In terms of performance, the technology in this embodiment ensures the reliability and stability of the composite toggle displacement amplification mechanism, consisting of the toggle support member and the right-angled curved rod 8, enabling it to accurately amplify the relative displacement between the two ends of the damper under earthquake action, thereby improving the damper's energy efficiency. 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 ear plate 14, to which the first support member 5, the second support member 6, and the third support member 7 are hingedly connected via the seventh pin 47, the eighth pin 48, and the ninth pin 49, respectively. The three-way connecting ear plate 14 serves as the intersection of the elbow-type support rods and is connected to each support member via a pin, forming a stable articulated network. It is based on the mechanical principle of multi-point articulation and, through the coordination of the pin and the ear plate, enables free rotation between the rods while maintaining the integrity of the structure. In terms of effect, the technology in this embodiment can ensure the 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 the rods can be optimized by introducing prestress or fine-tuning the position of the ear plate to adapt to specific structural layouts and design requirements.

[0034] like Figure 4As shown, AA is a cutaway symbol in the figure. The self-resetting damper 4 includes: an inner tube 31, an outer tube 32, a screw 33, an inner tube ear plate 34, an inner tube bottom plate 35, an outer tube ear plate 36, a disc spring 37 and an energy-absorbing steel belt 38; a disc spring 37 is provided on the screw 33, one end of the screw 33 is fixed to the outer tube ear plate 36, the inner tube bottom plate 35 is nested on the screw 33, one end of the outer tube 31 is fixed to the inner tube ear plate 34 on the outer surface, and the other end is sleeved on the outer side of the screw 33 and connected to the inner tube bottom plate 35, the outer tube 32 is sleeved on the outer side of the inner tube 31 and covers the entire screw 33, one end of the outer tube 32 is connected to the outer tube ear plate 36, and the energy-absorbing steel belt 38 is provided on the outer tube 32, one side of the energy-absorbing steel belt (38) is fixed to the outer tube (32), and the other side is fixed to the inner tube 31. The self-resetting damper uses disc springs and energy-absorbing steel belts as core components, which can absorb energy and automatically reset under the action of an earthquake. The disc spring provides a reset force through compression and release, while the energy-absorbing steel belt dissipates the seismic energy through plastic deformation. In terms of effect, it can effectively control the residual deformation of the structure, while improving its energy-absorbing capacity, and realize the toughness of the structure to reduce shock and quickly recover its function after the earthquake. In other embodiments, the performance of the damper can also be optimized by adjusting the stiffness of the disc spring or the shape and size of the energy-absorbing steel belt to adapt to earthquake loads of different intensities and structural requirements. Once a strong earthquake occurs, the structural damage is mainly concentrated in the self-resetting damper 4, and other components remain elastic or slightly plastic. The replacement of the damper can be achieved quickly, so that the structural function can be quickly restored. The above-mentioned self-resetting damper 4 can also be replaced by a traditional metal displacement damper.

[0035] The outer tube ear plate 36 of the self-resetting damper 4 is hinged to the right-angled curved rod 8 through the second pin 42, and the inner tube ear plate 34 of the self-resetting damper 4 is hinged to the beam-column node ear plate 13 through the fifth pin 45, ensuring that the self-resetting damper can capture the deformation of the node area. This connection method ensures that the self-resetting damper can produce corresponding axial deformation as the right-angled curved rod rotates, while maintaining coordinated movement with the frame structure. It is based on the energy dissipation mechanism and reset principle of the damper, and realizes the combination of shock absorption 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, and realizing tough shock absorption and rapid recovery of the structure. In other embodiments, the working state of the damper can also 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 and shock-absorbing device provided in this embodiment is as follows: under the action of an earthquake, the working process of the composite toggle-type displacement amplification and 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 rod will change their angles due to the relative movement between the frame column and the frame beam. This change is captured and amplified by the right-angle curved rod 8 and transmitted to the self-resetting damper 4. The energy-absorbing steel belt 38 of the self-resetting damper 4 begins to plastically deform and absorb earthquake energy. At the same time, the disc spring 37 is compressed and stores energy for post-earthquake reset. After the earthquake is over, the elastic force of the disc spring 37 causes the self-resetting damper 4 and the entire composite toggle-type displacement amplification mechanism to rebound to the initial position, realizing the self-reset of the structure and the rapid recovery of its function. During the entire use process, the composite toggle displacement amplification mechanism and the self-resetting damper work together, and 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, effectively controlling the lateral displacement and residual deformation of the structure, improving the seismic performance and toughness of the structure, and ensuring 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 toggle support rod and the right-angle curved rod are used together to amplify the relative displacement at both ends of the damper, significantly improving the displacement amplification effect of the damper. When the structure undergoes lateral displacement, the toggle support rod is used to achieve the primary amplification, and then the right-angle curved rod connected to the support rod is used to amplify the relative displacement of the damper. This can effectively improve the energy dissipation capacity of the damper, thereby improving the overall shock absorption effect of the structure.

[0038] (2) The use of self-resetting technology to replace traditional displacement dampers can effectively control the residual deformation of the structure after an earthquake. The self-resetting damper exerts an energy-absorbing and shock-absorbing effect through the energy-absorbing steel belt, and realizes the controllable residual deformation of the structure after an earthquake 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-absorbing component. At the same time, it can provide a large displacement deformation condition for the self-resetting damper, so that the damper can have a good energy dissipation capacity.

[0039] (3) It can provide additional lateral stiffness for the structure and limit the lateral displacement of the structure, thereby effectively increasing the usable height of the steel frame structure. Under the action of frequent earthquakes, all components remain elastic; under the action of design and rare earthquakes, the dampers gradually enter the elastic-plastic state to dissipate the earthquake energy, and the remaining components remain elastic or slightly develop plasticity. After the earthquake, the structural function can be quickly restored by replacing the dampers; under the action of extremely rare earthquakes, the dampers further develop plasticity, and the frame beam ends also begin to enter plasticity, ensuring that the structure does not collapse.

[0040] (4) The toggle support rods are connected to the self-resetting dampers and frame rods through lug pins. They are simple in structure and easy to install. No modification is required to the main structure of the traditional steel frame. The node connection structure and design method are well known to designers and researchers. The lug pin connection is also easy to disassemble after an earthquake. The operation is simple and the installation is convenient. There is no on-site wet work and the construction period is short. It has strong adaptability and a wide range of applications.

[0041] (5) The composite toggle-type displacement amplification self-resetting damper installation method can also be used in the reinforcement, renovation and upgrading of traditional structures, significantly improving the seismic performance of the original structure. The main structure of the steel frame basically maintains an elastic state under normal use and under the action of moderate to large earthquakes, so its energy dissipation capacity requirement is relatively low, and 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 of a composite toggle-type displacement amplifying shock absorbing device with a self-resetting damper, comprising the following steps: First, it is necessary to weld a second frame column lug 11 to the base of the second frame column 2, weld a frame beam lug 12 to the corresponding position on the frame beam 3, and equip the beam-column node position where the frame beam 3 intersects the first frame column 1 with a beam-column node lug 13. Next, to strengthen the structural strength of these connection points, it is necessary to weld a second frame column stiffener to the second frame column corresponding to the second frame column lug, weld a first frame beam stiffener to the frame beam corresponding to the frame beam lug 12, and add second frame beam stiffeners and first frame column stiffeners to the frame beam and first frame column at the corresponding positions of the beam-column node lug 13, respectively.

[0043] Subsequently, the right-angled curved link 8 is hinged to the frame beam lug 12 via the fourth pin 44. The outer lug of the self-resetting damper 4 is connected to the right-angled curved link 8 via the second pin 42, while the inner lug of the self-resetting damper is hinged to the beam-column node lug 13 via the fifth pin 46. The first support member 5 of the toggle support rod is hinged to the second frame column lug via the first pin 41, the second support member 6 is hinged to the beam-column node lug 13 via the sixth pin 46, and the third support member 7 is hinged to the right-angled curved link 8 via the third pin 43. This ensures that when the structure is subjected to an earthquake, the dual action of the toggle support rod and the right-angled curved link can amplify the relative displacement at both ends of the damper, thereby effectively improving energy efficiency and controlling post-earthquake residual deformation.

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

[0045] Through the design of this embodiment, the steel frame structure can maintain elasticity under frequent earthquakes, and under the design and 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 post-earthquake structure can quickly restore its function by simply replacing the damper, thereby achieving rapid recovery of structural function, reducing the building's maintenance cost and recovery time, and improving the safety and economy of the structure.

[0046] In summary, the composite elbow-jointed displacement amplification self-resetting damper steel frame structure and its assembly method proposed in the present invention significantly improve the seismic performance of building structures, achieve efficient displacement amplification through elbow-jointed support rods and right-angle curved rods, and increase the energy dissipation capacity and self-resetting characteristics of the structure. At the same time, the design is simple and easy to install, without requiring major changes to the main body of the traditional steel structure. It is suitable for the reinforcement and renovation of new structures and old structures, providing a strong guarantee for the structural safety of high-intensity seismic fortification areas. At the same time, it also promotes the use of high-strength steel, reduces the overall weight and cost of the structure, and has broad practical value and market prospects.

[0047] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are merely illustrative in all respects and are not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A composite toggle-type displacement amplification shock-absorbing device with a self-resetting damper, characterized in that: include: A steel frame structure, a self-resetting damper (4) mounted on the steel frame structure, a toggle support rod, and a right-angle curved rod (8); The toggle-type support rod comprises a first support member (5), a second support member (6) and a third support member (7), the first support member (5), the second support member (6) and the third support member (7) being hinged to each other, and 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 curved rod (8). The ends of the first support member (5) and the second support member (6) are hinged to the steel frame structure. 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 connecting lines between the hinge points on the right-angled curved rod (8) is a right triangle.

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

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

4. The composite toggle-type displacement amplification shock-absorbing device of 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) through the first pin shaft (41), the end of the second support member (6) is hinged to the beam-column node ear plate (13) through the sixth pin shaft (46), the right-angled curved rod (8) is hinged to the frame beam ear plate (12) through the fourth pin shaft (44), and the end of the third support member (7) is hinged to the right-angled curved rod (8) through the third pin shaft (43).

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

6. The composite toggle-type displacement amplification shock-absorbing device of a self-resetting damper according to claim 1, characterized in that: It also includes a three-way connecting ear plate (14), and the first support member (5), the second support member (6) and the third support member (7) are hinged to the three-way connecting ear plate (14) through the ninth pin (49), the eighth pin (48) and the seventh pin (47) respectively.

7. The composite toggle-type displacement amplification shock-absorbing device of a self-resetting damper according to claim 5, characterized in that: The self-resetting damper (4) includes: an inner tube (31), an outer tube (32), a screw (33), an inner tube ear plate (34), an inner tube bottom plate (35), an outer tube ear plate (36), a disc spring (37) and an energy-absorbing steel belt (38); A disc spring (37) is provided on the screw (33), one end of the screw (33) is fixed to the outer tube ear plate (36), the inner tube bottom plate (35) is nested on the screw (33), one end of the inner tube (31) is fixed to the inner tube ear plate (34) on the outer surface, and the other end is fixed to the inner tube bottom plate (31) and sleeved on the outer side of the screw (33), the outer tube (32) is sleeved on the outer side of the inner tube (31) and covers the entire screw (33), one end of the outer tube (32) is connected to the outer tube ear plate (36), and an energy-absorbing steel belt (38) is provided on the outer tube (32), one side of the energy-absorbing steel belt (38) is fixed to the outer tube (32), and the other side is fixed to the inner tube (31).

8. The composite toggle-type displacement amplification shock-absorbing device of a self-resetting damper according to claim 7, characterized in that: The outer tube ear plate (36) of the self-resetting damper (4) is hinged to the right-angled curved rod (8) through the second pin shaft (42), and the inner tube ear plate (34) of the self-resetting damper (4) is hinged to the beam-column node ear plate (13) through the fifth pin shaft (45).

9. A method for assembling a composite toggle-type displacement amplifying shock-absorbing device with a self-resetting damper, characterized in that: A composite toggle-type displacement amplifying shock absorbing device based on a self-resetting damper according to claim 7 comprises the following steps: Welding the second frame column ear plate (11) to the column foot of the second frame column (2), welding the frame beam ear plate (12) to the frame beam (3), and welding the beam-column node ear plate (13) to the right-angle connection formed by the frame beam (3) and the first frame column (1); Welding a second frame column stiffening rib (15) on the second frame column (2) at a position corresponding to the second frame column ear plate (11), welding a first frame beam stiffening rib (16) on the frame beam (3) at a position corresponding to the frame beam ear plate (12), welding a second frame beam stiffening rib (18) on the frame beam (3) at a position corresponding to the beam-column node ear plate (13), and welding a first frame column stiffening rib (17) on the first frame column (1) at a position corresponding to the beam-column node ear plate (13); First, the right-angled curved rod (8) is hinged to the frame beam ear plate (12) through the fourth pin (44), and then the outer tube ear plate (36) of the self-resetting damper (4) is hinged to the right-angled curved rod (8) through the second pin (42), and at the same time, the inner tube ear plate (34) of the self-resetting damper (4) is hinged to the beam-column node ear plate (13) through the fifth pin (45); The end of the first support member (5) is hinged to the second frame column ear plate (11) through the first pin shaft (41), the end of the second support member (6) is hinged to the beam-column node ear plate (13) through the sixth pin shaft (46), and the end of the third support member (7) is hinged to the right-angled curved rod (8) through the third pin shaft (43). Finally, the first support member (5), the second support member (6) and the third support member (7) are fixed to the three-way connection ear plate (14) through the ninth pin shaft (49), the eighth pin shaft (48) and the seventh pin shaft (47) respectively to complete the assembly.

10. The assembly method of a composite toggle-type displacement amplifying shock absorbing device of 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 made of structural steel having a yield strength of not less than 355 MPa.

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