A diamond arrangement axial damper device

Abstract

The application discloses a diamond-shaped arrangement axial damper device, which comprises two structural columns and two structural beams, the structural beams are installed between the structural columns and are located above and below respectively; a node plate assembly, which comprises a compensation support connecting plate fixedly installed in the middle of the structural beam, a damper connecting plate arranged in the middle of the structural column and a connecting pin shaft; four groups of damping groups, each group of damping groups comprising an axial damper and a compensation support rod connected in series; the four groups of damping groups are arranged inside a frame surrounded by the structural columns and the structural beams and are in a diamond-shaped arrangement form; the application belongs to the technical field of building structure anti-seismic technology and achieves the technical effect that the diamond-shaped arrangement axial damper device enables the normal force components of the two adjacent dampers acting on the same beam-column joint to be in opposite directions, to be mutually offset or to be greatly weakened, so that the main load transmitted to the beam and the column is converted into a tangential force along the axial direction.

Description

Technical Field

[0001] This invention relates to the field of seismic resistance technology for building structures, specifically to a rhomboid-arranged axial damper device. Background Technology

[0002] In contemporary seismic design of building structures, utilizing energy dissipation and damping devices to dissipate seismic input energy has become an important and effective technical approach to improve structural safety and control structural damage. Among these, axially loaded dampers, as the core energy-dissipating element, have damping effectiveness that depends not only on their own mechanical properties but also on their connection form and spatial arrangement within the main structure. Traditionally, axially loaded dampers are often arranged in structures using A-frame bracing, V-bracing, or single diagonal bracing. These traditional arrangements have revealed several inherent drawbacks in practice. First, their connection nodes typically converge at the core area of ​​the beam-column intersection, causing the damper to simultaneously apply tangential and normal forces to the beam and column members, resulting in a complex stress state and significant stress concentration in the joint area. For concrete structures, the normal force perpendicular to the beam-column axis induces significant tensile stress in the joint area, forcing the design of embedded parts in the joint area to simultaneously consider shear and pull-out resistance. This significantly increases the amount of steel used for embedded parts and the design and construction difficulty, especially in beam-column joint areas where reinforcement is already dense, making conflicts difficult to avoid. This contradiction is particularly prominent in reinforcement and renovation projects for existing buildings. Secondly, from the perspective of architectural function and aesthetics, herringbone, V-shaped, and other bracing designs are often arranged across the entire structural bay, often obstructing windows or affecting the view and transparency of the interior space, significantly limiting the building facade design and internal functional layout. Furthermore, considering the convenience of construction and installation, these traditional bracing components are usually long and large, causing many inconveniences for transportation, hoisting, and on-site positioning and adjustment. To avoid window obstruction issues, a so-called wall-type connection was developed, where the damper is connected to the main structure via upper and lower concrete wall piers. While this method partially resolved the architectural layout conflict, it introduced new problems: it required massive transfer wall piers, increasing not only the structural weight and material usage but also significantly raising costs; more importantly, the force transmission path of the damper became circuitous, requiring transmission through the wall piers to the beams, and then from the beams to the columns. This indirect force transmission made it difficult to fully and effectively convert inter-story deformation into the axial deformation required by the damper, thus greatly reducing the energy dissipation efficiency of the damper. Simultaneously, the additional bending moment transmitted to the transfer beams also constituted a new design burden. Another method, the elbow-type support connection, aimed at amplifying damper deformation, improved the damper's stroke utilization rate, but it still suffered from the problems of complex node stress, bending moments on columns, and potential out-of-plane instability inherent in traditional supports. In summary, the conventional arrangement and connection methods of axial dampers in the existing technology generally have a series of interrelated technical problems, such as complex and unfavorable node stress, impact on building function, inconvenient construction and installation, limited energy consumption efficiency due to indirect force transmission path, and difficulty in arranging embedded parts in the node area in concrete structures. Therefore, since the existing requirements are not met, we propose a rhomboid arrangement axial damper device. Summary of the Invention

[0003] To address these issues, the present invention provides a rhomboid-arranged axial damper device to solve the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: According to a first aspect of the present invention, a rhomboid arrangement axial damper device includes two structural columns and two structural beams, wherein the structural beams are installed between the structural columns and are located above and below them respectively, together forming a partial structural frame; The node plate assembly includes a compensating support connecting plate fixedly installed in the middle of the structural beam, a damper connecting plate disposed in the middle of the structural column, and a connecting pin. Four damping groups, each including an axial damper and a compensating support rod connected in series; the four damping groups are arranged inside the frame formed by the structural columns and structural beams in a diamond pattern; the two ends of each damping group are rotatably connected to the corresponding damper connecting plate and the compensating support connecting plate through the connecting pin.

[0005] Furthermore, the damper connecting plate is directly fixed to the structural column.

[0006] Furthermore, an axial displacement release mechanism is provided between the damper connecting plate and the structural column.

[0007] Furthermore, the axial displacement release mechanism includes a central steel plate fixed to the structural column, two side steel plates connected to the damper connecting plate, and a guide rod; the central steel plate has a horizontal elongated hole, and the guide rod passes through the elongated hole and is fixedly connected to the two side steel plates.

[0008] Furthermore, the axial displacement release mechanism includes a central steel plate fixed to the structural column, two side steel plates connected to the damper connecting plate, and a guide rod; the central steel plate and the two side steel plates are each provided with a horizontal elongated hole, and the guide rod passes through the elongated holes of the side steel plate, the central steel plate, and the other side steel plate in sequence, with fixing caps at both ends to prevent axial dislodgement, and the guide rod is in sliding fit with the inner wall of the elongated hole of the side steel plate.

[0009] Furthermore, the guide rod has external threads machined at both ends, and the fixing cap is a nut that mates with the external threads; by tightening the nut, the static friction between the guide rod and the inner wall of the elongated hole in the side steel plate can be adjusted.

[0010] Furthermore, the guide rod is a composite shaft structure, including a mandrel, a viscoelastic damping sleeve covering the middle of the mandrel, and wear-resistant sliding bushings fixed to both ends of the viscoelastic damping sleeve; the outer wall of the wear-resistant sliding bushing is clearance-fitted with the inner wall of the elongated hole of the side steel plate.

[0011] Furthermore, the inner side of the fixing cap is provided with an annular protrusion, and the inner side of the annular protrusion abuts against the end of the outer wall of the wear-resistant sliding bushing.

[0012] Furthermore, the annular protrusion is hemispherical, and the end face of the wear-resistant sliding bushing is provided with a groove corresponding to the hemispherical protrusion.

[0013] Furthermore, on the guide rod, a set of disc springs is provided on each side of the central steel plate, with one end of the disc springs acting on the central steel plate and the other end acting on the guide rod.

[0014] Furthermore, the axial damper and the compensation support rod are connected in series by threaded connection, welding or flange connection.

[0015] The present invention has the following advantages: 1. This diamond-shaped axial damper device, through its unique geometric arrangement and node construction design, brings multiple significant benefits. First, in terms of structural stress performance, the ingenious geometric symmetry of the diamond arrangement allows the normal force components of two adjacent dampers acting on the same beam-column node to ideally be opposite in direction, canceling each other out or significantly weakening each other, thereby transforming the main load transmitted to the beam and column into tangential force (shear force) along its axial direction. This mechanical characteristic makes the stress state of beam and column members (especially columns as the main load-bearing members) clearer and more favorable, significantly reducing the bending moment demand and shear stress in the node area. To further address the residual unbalanced forces that may exist in actual engineering, this invention creatively introduces an axial displacement release mechanism. This mechanism, by allowing controllable sliding displacement of the connecting node in the axial direction of the damper, can physically isolate or release most of the harmful horizontal shear forces that may act on the column, providing crucial protection for the core load-bearing column and achieving a perfect unity of efficient stress distribution and main structural safety protection. 2. This rhomboid-arranged axial damper device upgrades a single force-transmitting sliding component into a composite structure with viscoelastic energy dissipation capabilities through functional design of the guide rod assembly. This allows the device to perform its core functions of displacement release and force transmission while additionally dissipating seismic energy through the shear deformation of the viscoelastic material, thus increasing the overall energy dissipation capacity of the damping system. The "adaptive ball joint interface" formed by hemispherical protrusions and grooves further optimizes force flow transmission, resulting in uniform contact stress distribution. This not only reduces local wear and improves sliding smoothness and long-term reliability but also ensures that the viscoelastic energy dissipation material can work more stably and efficiently. This integrated design concept of "one component, multiple functions" achieves a leap in performance without significantly increasing system complexity and cost, enabling the device to simultaneously achieve efficient release, additional energy dissipation, and durable reliability. Attached Figure Description

[0016] Figure 1 This is a front view of a rhomboid-arranged axial damper device proposed in this invention; Figure 2 for Figure 1 A schematic diagram of the decomposition process; Figure 3 This is a schematic diagram showing the connection between the shock absorber assembly and the damper connecting plate. Figure 4 for Figure 3 A schematic diagram of the decomposition process; Figure 5 This is the main view of the damper connection plate; Figure 6 This is a schematic diagram of the main view of a viscoelastic damping sleeve. Figure 7 for Figure 6 A schematic diagram of the decomposition process; Figure 8 This is a schematic diagram of the guide rod from the front view. Figure 9 This is a schematic cross-sectional view of the guide rod; Figure 10 This is a schematic diagram showing the connection between a hemispherical annular protrusion and its corresponding groove.

[0017] In the diagram: 100, structural column; 200, structural beam; 300, damping assembly; 301, axial damper; 302, compensating support rod; 401, damper connecting plate; 402, compensating support connecting plate; 403, connecting pin; 4041, side steel plate; 4042, central steel plate; 4043, guide rod; 4044, fixing cap; 501, smooth cylindrical section; 502, shaft section; 503, tapered transition section; 601, viscoelastic damping sleeve; 602, wear-resistant sliding bushing; 603, annular protrusion. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Reference Figures 1-9 A rhomboid-arranged axial damper device includes a damping assembly 300 and a gusset plate assembly; It also includes two structural columns 100 and two structural beams 200 installed between the structural columns 100, located above and below them respectively; the cross-sections of the structural columns 100 and the structural beams 200 are both rectangular and made of reinforced concrete, and the two are vertically assembled to form a partial structural frame. The node plate assembly mainly includes a compensation support connecting plate 402, a damper connecting plate 401, and a connecting pin 403; its specific connection and arrangement are as follows: A set of compensating support connecting plates 402 are fixedly installed at the lower center of the upper structural beam 200 and at the upper center of the lower structural beam 200. Each set of compensating support connecting plates 402 consists of two plates, which are fixed to the structural beam 200 by welding. The two compensating support connecting plates 402 in the same set are arranged in parallel side by side with a certain installation gap in between to accommodate the rotating connecting parts at the end of the damping assembly 300. Each compensating support connecting plate 402 has a round hole on both its left and right sides for a connecting pin 403 to pass through. In the middle of the opposite sides (i.e. the inner side of the frame) of the two structural columns 100, a set of damper connecting plates 401 is provided; each set of damper connecting plates 401 also has two pieces, parallel and side by side, with a reserved installation gap in the middle; each damper connecting plate 401 has two round holes at both the upper and lower ends. To achieve a diamond-shaped arrangement and connect the components, four damping groups 300 are provided between the two sets of damper connecting plates 401 and the two sets of compensation support connecting plates 402. For ease of description, the damper connecting plate 401 on the left is called damper connecting plate one, and the one on the right is called damper connecting plate two. The compensation support connecting plate 402 on the upper side is called compensation support connecting plate one, and the one on the lower side is called compensation support connecting plate two. The specific connection relationship of the four sets of 300 damping groups is as follows: The first damping assembly 300 is connected between the upper part of the damper connecting plate 1 and the lower left side of the compensation support connecting plate 1. A second damping assembly 300 is connected between the lower part of the damper connecting plate one and the upper left side of the compensation support connecting plate two. A third damping assembly 300 is connected between the upper part of the damper connecting plate 2 and the lower right side of the compensation support connecting plate 1. A fourth damping assembly 300 is connected between the lower part of the damper connecting plate 2 and the upper right side of the compensation support connecting plate 2. Both ends of each damping assembly 300 are rotatably connected to the corresponding damper connecting plate 401 and compensation support connecting plate 402 via connecting pins 403, thereby forming a stable rhomboid force system. Specifically, each damping assembly 300 includes an axial damper 301 and a compensating support rod 302. In this embodiment, the axial damper 301 is a friction-type axial damper. One end of the damper 301 has a circular hole three, and the other end is machined with an external thread. One end of the compensating support rod 302 is machined with an internal thread, and it is connected to the externally threaded end of the axial damper 301 by rotating the thread. This threaded connection method facilitates the adjustment of the overall length of the damping assembly to accommodate the installation gap and apply a certain preload. The other end of the compensating support rod 302 has a circular hole four. Taking the second damping assembly 300, installed between the lower part of the damper connecting plate and the upper left side of the compensation support connecting plate, as an example, the connection process is explained in detail: The axial damper 301 has one end with a circular hole three, which extends into the installation gap between the two plates of the damper connecting plate one and maintains a sliding fit with its inner wall, while ensuring that the circular hole three is aligned with the circular hole two located below the damper connecting plate one. The end of the compensating support rod 302 with the fourth round hole extends into the installation gap between the two plates of the compensating support connecting plate 2 and slides against its inner wall, while ensuring that the fourth round hole is aligned with the first round hole on the upper left side of the compensating support connecting plate 2. Subsequently, two connecting pins 403 are used for final fixation: one pin passes through the second round hole of the damper connecting plate 1 and the third round hole of the axial damper 301 in sequence, connecting the axial damper 301 and the damper connecting plate 1 in series; the other pin passes through the first round hole of the compensation support connecting plate 2 and the fourth round hole of the compensation support rod 302 in sequence, connecting the compensation support rod 302 and the compensation support connecting plate 2 in series. The remaining three damping groups are installed symmetrically according to this logic, ultimately forming a stable rhomboid force system; The damper connecting plate 401 is welded and fixed to the structural column 100; Working principle: When the frame undergoes inter-story deformation under horizontal load, the four damping groups 300 work together in a rhomboid pattern, with two groups under tension and two groups under compression, driving the axial damper 301 to generate axial deformation to dissipate energy. The geometric symmetry of the rhomboid arrangement allows the components of the normal force (force perpendicular to the beam-column axis) acting on the beam-column joints of adjacent damping groups to cancel each other out under ideal conditions, thereby converting the main load into tangential force (shear force) along the beam-column axis and optimizing the stress state of the beam-column. However, in this embodiment, the damper connecting plate 401 is rigidly welded to the structural column 100, which means that any residual normal force that is not completely canceled out, as well as the axial constraints caused by installation or deformation, will be directly transmitted to the structural column 100.

[0020] Example 2: An axial displacement release mechanism 404 is also provided between each damper connecting plate 401 and the corresponding structural column 100; The axial displacement release mechanism 404 includes: side steel plates 4041 on both sides, a central steel plate 4042 with a horizontal elongated hole, and a guide rod 4043. The central steel plate 4042 is vertically welded and fixed to the embedded part in the middle of the structural column 100; two side steel plates 4041 are located on both sides of the central steel plate 4042 respectively; the outer wall of the guide rod 4043 is slidably connected to the inner wall of the elongated hole of the central steel plate 4042; the two ends of the guide rod 4043 are fixedly connected to the inner side of one of the two side steel plates 4041 respectively; the ends of the two side steel plates 4041 away from the structural column 100 are welded and fixed to one of the two damper connecting plates 401 in the same group respectively. Working principle: This embodiment introduces an axial displacement release mechanism 404 based on embodiment one. Its core is to change the rigid connection between the damper connecting plate 401 and the structural column 100 to a "sliding connection" through this mechanism. When the damper has axial deformation requirements or generates residual normal force, it will push the side steel plate 4041, which in turn drives the guide rod 4043 fixedly connected to it, causing it to slide in the elongated hole of the middle steel plate 4042. This sliding process allows the damper connecting end to generate a limited displacement in the horizontal direction relative to the structural column, thereby effectively releasing the constraint along the axial direction of the damper and avoiding the complete rigid transmission of normal force (horizontal shear force) to the structural column 100, thus playing a preliminary protective role. This mechanism provides a fixed displacement release stroke, and its maximum release amount depends on the length of the elongated hole in the middle steel plate.

[0021] Example 3: The two side steel plates 4041 are also provided with horizontal elongated holes. The outer walls of both ends of the guide rod 4043 are slidably connected to the inner wall of the elongated hole, rather than being fixedly connected. Both ends of the guide rod 4043 are provided with fixing caps 4044, and the distance between the inner sides of the two fixing caps 4044 is greater than the distance between the outer sides of the two side steel plates 4041. The main function of the fixing caps 4044 is to prevent the guide rod 4043 from axially dislodging from the elongated hole, and does not restrict the relative sliding between the side steel plate 4041 and the middle steel plate 4042 along the direction of the elongated hole. The assembly gap between the side steel plate 4041 and the middle steel plate 4042, as well as the fit tolerance between the guide rod 4043 and the inner wall of the elongated hole, together constitute the space required for sliding. Working principle: When the frame is subjected to horizontal loads and inter-story shear deformation occurs, the four sets of damping groups 300 arranged in a diamond pattern work together, with two sets under tension and two sets under compression; the axial damper 301 dissipates energy during the tensile-compressive reciprocating deformation; the diamond arrangement causes the normal forces of adjacent dampers to cancel each other out, mainly transferring shear force to the beams and columns; when a small forced displacement occurs in the axial direction of the damper due to deformation coordination or manufacturing errors, the axial deformation release mechanism 404 activates. The side steel plate 4041 is allowed to slide relative to the guide rod 4043 (along the elongated hole of the side steel plate itself), while the guide rod 4043 can also slide within the elongated hole of the middle steel plate 4042. The superposition of these two sliding paths allows the side steel plate (and the damper connected to it) to make a wider range and more flexible displacement relative to the middle steel plate 4042 fixed to the column, thereby more effectively releasing the directional constraint, significantly reducing or even basically eliminating the risk of directly transmitting horizontal shear force (normal force) to the structural column 100, and playing a better role in protecting the main load-bearing column.

[0022] Example 4: The guide rod 4043 has external threads at both ends, and the fixing cap is a matching nut. By tightening the nut, a radial clamping force can be applied between the guide rod 4043 and the elongated hole on the side steel plate 4041, thereby adjusting the static friction between the two. The precise motion release process of the mechanism is as follows, taking the left mechanism as an example (the initial state is usually set so that the guide rod 4043 is located at the rightmost end of the long oval hole in the middle steel plate). First stage sliding (guide rod 4043 movement): When the axial force generated by the axial damper 301 pushes the side steel plate 4041 to move to the left, since the guide rod 4043 initially has a certain binding force with the side steel plate 4041 through the nut, the guide rod 4043 and the side steel plate 4041 are temporarily "locked" into a whole under the action of friction. This binding force will drive the guide rod 4043 to move to the left together. In this stage, the guide rod 4043 slides in the elongated hole of the middle steel plate 4042, and a relative displacement occurs between the side steel plate 4041 and the middle steel plate 4042. The amount of displacement (ΔL1) released in this process is limited by the effective length of the elongated hole of the middle steel plate. Second stage sliding (side steel plate 4041 moves alone): When the guide rod 4043 moves to the left limit position of the elongated hole of the middle steel plate 4042, it can no longer move; if the axial force continues to increase and exceeds the preset bonding force (static friction) threshold between the guide rod 4043 and the side steel plate 4041, the side steel plate 4041 will overcome the resistance, and its own elongated hole will begin to slide to the left relative to the fixed guide rod 4043; in this stage, the side steel plate 4041 undergoes relative displacement with respect to the middle steel plate 4042 (through the fixed guide rod 4043), and the additional displacement (ΔL2) released in this process is limited by the effective length of the elongated hole on the side steel plate 4041; The core function of nut tightening torque: The force threshold for the second-stage sliding start is adjusted by tightening the nut. By adjusting this torque, the magnitude of the bonding force between the guide rod and the side steel plate can be set, thereby controlling when the mechanism transitions from the coordinated movement of the first stage to the pure steel plate sliding of the second stage. Under minor earthquakes or normal loads, the mechanism can maintain high rigidity and avoid unnecessary sliding. Under major earthquakes, when the force exceeds the set threshold, a large-stroke sliding is initiated to fully release deformation and protect the main structure.

[0023] Example 5: The main difference from any of Examples 1-4 lies in the main structural materials: the structural column 100 is made of box steel, and the structural beam 200 is made of H-beam steel; The axial damper 301 can be a viscous damper, and it can be connected to the compensation support rod 302 by welding or flange. Working principle: This embodiment demonstrates the applicability of the rhomboid axial damper device in different main structural materials (reinforced concrete → steel structure); its core damping mechanism, the force transmission advantage of the rhomboid arrangement, and the functional logic of the node plate assembly (including the optional axial displacement release mechanism 404) remain unchanged; in the steel frame, all connecting plates (compensation support connecting plate 402, damper connecting plate 401, and each steel plate of the release mechanism) can be directly and reliably connected to the steel beams and columns by welding or high-strength bolts, making construction more convenient; this reflects the wide applicability and flexibility of this solution.

[0024] Example 6: The guide rod 4043 is configured as a composite shaft, which is a stepped shaft made of high-strength alloy steel; the middle part is a smooth cylindrical section 501, the two ends are shaft sections 502 with external threads, and the middle shoulder is configured as a tapered transition section 503. The diameter of the oblong hole on the side steel plate 4041 is larger than the diameter of the oblong hole on the middle steel plate 4042; The outer wall of the smooth cylindrical section 501 is interactively connected to the inner wall of the elongated hole on the middle steel plate 4042, and its outer wall is also fitted with a viscoelastic damping sleeve 601 with an interference fit. Wear-resistant sliding bushings 602 are installed on the tapered transition section 503 and the shaft end 502. The wear-resistant sliding bushings 602 are high wear-resistant metal (such as brass or special alloy) sleeves, which are press-fitted onto both ends of the viscoelastic damping sleeve 601. The outer diameter of the wear-resistant sliding bushings 602 is clearance-fitted with the inner wall of the elongated hole of the side steel plate 4041, serving as the main sliding pair. An annular protrusion 603 is installed on the inner periphery of the fixing cap 4044, and the inner side of the annular protrusion 603 abuts against the outer wall of the wear-resistant sliding bushing 602. Working principle: This embodiment is a functional upgrade of the guide rod assembly, with the core being the integration of an energy dissipation mechanism; its working principle consists of two synergistic levels: Displacement release function: When the side steel plate 4041 is displaced by the damper, its elongated hole will slide along the outer wall of the wear-resistant sliding bushing 602 (main sliding pair); at the same time, the entire guide rod assembly (including the mandrel, viscoelastic damping sleeve 601 and wear-resistant bushing 602) can also slide in the elongated hole of the middle steel plate 4042; the combination of the two realizes the effective release of displacement; Additional viscoelastic energy dissipation function: The sliding process described above will generate friction between the wear-resistant sliding bushing 602 and the inner wall of the elongated hole of the side steel plate 4041. This friction will attempt to drive the wear-resistant sliding bushing 602 to move, but since the bushing 602 is press-fitted onto the viscoelastic damping sleeve 601, and the damping sleeve 601 is press-fitted onto the smooth cylindrical section 501 of the mandrel, and the mandrel is axially constrained by the fixing cap 4044, the shear force on the bushing 602 will be completely transferred to the viscoelastic damping sleeve 601, causing its material to undergo significant shear deformation. In the reciprocating shear deformation, the viscoelastic material will convert mechanical energy into heat energy due to internal friction, thereby achieving additional energy dissipation. The function of the annular protrusion 603 is to more reliably transfer the axial constraint force of the fixing cap 4044 to the end area of ​​the wear-resistant sliding bushing 602, enhancing its overall stability.

[0025] Example 7: The annular protrusion 603 is hemispherical, and the end face of the wear-resistant sliding bushing 602 has a groove corresponding to the hemispherical annular protrusion 603; see details below. Figure 10 ; Working principle: The hemispherical protrusion and the groove form a "spherical hinge" connection interface. This ingenious design allows the wear-resistant sliding bushing 602 to make a slight angular adaptive adjustment relative to the fixed cap 4044 when subjected to axial pressure, ensuring a more uniform distribution of contact pressure between the bushing end face and the fixed cap, and between the outer wall of the bushing and the inner wall of the elongated hole in the side steel plate. This not only reduces local wear and improves durability, but also makes the guide rod assembly slide more smoothly during sliding and helps the viscoelastic damping sleeve 601 to more effectively exert its shear energy dissipation function.

[0026] Example 8: Both sides of the smooth cylindrical section 501, that is, both sides of the viscoelastic damping sleeve 601, are provided with a set of disc springs (not shown in the figure). The other end of the disc springs is connected to or abuts against the side surface of the central steel plate 4042. Working principle: This embodiment, based on embodiment six or seven, further integrates a self-resetting function; the disc spring assembly is pre-compressed and installed between the guide rod assembly and the central steel plate 4042; when the guide rod assembly slides relative to the central steel plate, it will further compress the disc spring assembly on one side, regardless of which side it moves to; the compressed springs store elastic potential energy; when the seismic action weakens or stops, the disc spring assembly releases the stored energy, pushing the guide rod assembly to tend to return to its initial equilibrium position, thereby enabling the entire node to have a self-resetting ability; this helps to reduce the residual displacement of the structure after the earthquake, and combined with the energy dissipation of the viscoelastic damping sleeve 601, a synergistic effect of "energy dissipation + reset" is formed, which significantly improves the overall seismic performance of the node.

Claims

1. A rhomboid-arranged axial damper device, characterized in that, include: Two structural columns and two structural beams, the structural beams being installed between the structural columns and located above and below them respectively, together forming a partial structural frame; The node plate assembly includes a compensating support connecting plate fixedly installed in the middle of the structural beam, a damper connecting plate disposed in the middle of the structural column, and a connecting pin. Four damping groups, each including an axial damper and a compensating support rod connected in series; the four damping groups are arranged inside the frame formed by the structural columns and structural beams in a diamond pattern; the two ends of each damping group are rotatably connected to the corresponding damper connecting plate and the compensating support connecting plate through the connecting pin.

2. The rhomboid arrangement axial damper device according to claim 1, characterized in that, The damper connecting plate is directly fixed to the structural column.

3. The rhomboid arrangement axial damper device according to claim 1, characterized in that, An axial displacement release mechanism is provided between the damper connecting plate and the structural column.

4. The rhomboid arrangement axial damper device according to claim 3, characterized in that, The axial displacement release mechanism includes a central steel plate fixed to the structural column, two side steel plates connected to the damper connecting plate, and a guide rod; the central steel plate has a horizontal elongated hole, and the guide rod passes through the elongated hole and is fixedly connected to the two side steel plates.

5. The rhomboid arrangement axial damper device according to claim 3, characterized in that, The axial displacement release mechanism includes a central steel plate fixed to the structural column, two side steel plates connected to the damper connecting plate, and a guide rod. The central steel plate and the two side steel plates are provided with horizontal elongated holes. The guide rod passes through the elongated holes of the side steel plate, the central steel plate, and the other side steel plate in sequence. Both ends of the guide rod are provided with fixing caps to prevent axial dislodgement. The guide rod is in sliding fit with the inner wall of the elongated hole of the side steel plate.

6. The rhomboid arrangement axial damper device according to claim 5, characterized in that, The guide rod has external threads at both ends, and the fixing cap is a nut that mates with the external threads; by tightening the nut, the static friction between the guide rod and the inner wall of the elongated hole in the side steel plate can be adjusted.

7. A rhomboid-arranged axial damper device according to claim 6, characterized in that, The guide rod is a composite shaft structure, including a mandrel, a viscoelastic damping sleeve covering the middle of the mandrel, and wear-resistant sliding bushings fixed at both ends of the viscoelastic damping sleeve; the outer wall of the wear-resistant sliding bushing is clearance-fitted with the inner wall of the elongated hole of the side steel plate.

8. A rhomboid-arranged axial damper device according to claim 7, characterized in that, The inner side of the fixing cap is provided with an annular protrusion, and the inner side of the annular protrusion abuts against the end of the outer wall of the wear-resistant sliding bushing.

9. A rhomboid-arranged axial damper device according to claim 8, characterized in that, The annular protrusion is hemispherical, and the end face of the wear-resistant sliding bushing has a groove corresponding to the hemispherical protrusion.

10. A rhomboid-arranged axial damper device according to claim 9, characterized in that, On the guide rod, a set of disc springs is provided on each side of the central steel plate. One end of the disc springs acts on the central steel plate, and the other end acts on the guide rod.

11. A rhomboid-arranged axial damper device according to claim 1, characterized in that, The axial damper and the compensation support rod are connected in series by threaded connection, welding or flange connection.

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