Adaptive damping and negative stiffness energy dissipation outrigger system

Abstract

The application provides an adaptive damping negative stiffness energy-dissipation outrigger system, and relates to the technical field of building engineering related equipment, which comprises a double-layer outrigger truss structure, a frame column structure, a viscous damping disc spring group structure, a lever and a viscous damper, one end of the viscous damping disc spring group structure is rotationally connected with the double-layer outrigger truss structure, and the other end of the viscous damping disc spring group structure is connected with one end of the lever; the other end of the lever away from the viscous damping disc spring group structure is used for being connected with the frame column structure; one end of the viscous damper is rotationally connected with the frame column structure, and the other end of the viscous damper is rotationally connected with one end of the double-layer outrigger truss structure away from a core tube. The application alleviates the technical problems that the negative stiffness energy-dissipation outrigger device in the prior art has poor viscous damping adaptability, a single damping parameter cannot adapt to the vibration response control requirements of multiple levels, a large space of the building structure is occupied, and the out-of-plane rigidity of the lever-prestressed spring mechanism is insufficient.

Description

Technical Field

[0001] This invention relates to the technical field of equipment related to building engineering, and in particular to an adaptive damping negative stiffness energy dissipation outrigger system. Background Technology

[0002] With the advancement of urbanization in my country, large-scale construction of high-rise or super high-rise buildings will become a trend in order to alleviate the pressure of urban housing demand. In the development of high-rise and super high-rise structures, the frame-core tube structure system has become a very common structural system due to its ability to balance the needs of large spaces and lateral force resistance.

[0003] Therefore, to control structural lateral displacement and bending moment at the base of the core tube, high-rise buildings typically require a strengthening layer. In this strengthening layer, a ring truss is first used to allow the columns of the outer frame to deform in tandem; then, a high-stiffness outrigger truss connects the outer columns and the central core tube. This construction allows the core tube to bend and deform under external lateral loads, causing the outrigger truss to rotate, which in turn generates tensile and compressive deformation in the outer columns, enabling the core tube and outer frame to work together to resist external loads.

[0004] In existing technologies, the connection of the column at the end of the outrigger is often disconnected, and energy dissipation components such as viscous dampers and buckling-restrained braces are installed at the connection between the outer frame column and the end of the outrigger. This utilizes the large vertical relative deformation concentrated between the end of the outrigger and the outer frame column to fully leverage the energy dissipation capacity of the energy dissipation components. However, under minor, moderate, major, and mega-earthquakes, the viscous damping coefficient of existing negative stiffness energy dissipation outriggers is constant, making it impossible to fully adapt to the structural response control of seismic ground motion at all four levels, resulting in poor adaptability for four-level damping. Furthermore, existing negative stiffness energy dissipation outriggers increase the space occupied by the building structure and are prone to bending deformation or misalignment due to insufficient out-of-plane stiffness of the lever-preload spring, thus affecting the performance of the device. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive damping negative stiffness energy dissipation outrigger system to alleviate the technical problems of poor applicability of existing negative stiffness energy dissipation outrigger devices, large space occupation in building structures, and insufficient device stiffness.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides an adaptive damping negative stiffness energy dissipation outrigger system, comprising a double-layer outrigger truss structure, a frame column structure, a viscous damping disc spring assembly structure, a lever, and a viscous damper. One end of the double-layer outrigger truss structure is used to connect with an external core tube, and the other end of the double-layer outrigger truss structure is rotatably connected to the lever. One end of the viscous damping disc spring assembly is rotatably connected to the double-layer cantilever truss structure, and the other end of the viscous damping disc spring assembly is connected to one end of the lever. The other end of the lever, away from the viscous damping disc spring assembly, is used to connect to the frame column structure. One end of the viscous damper is rotatably connected to the frame column structure, and the other end of the viscous damper is rotatably connected to the end of the double-layer cantilever truss structure opposite to the core tube.

[0007] Furthermore, the viscous damping disc spring assembly structure includes a left end assembly, a disc spring assembly, a right end assembly, and a semi-solid viscous filler. The left end assembly is rotatably connected to one end of the lever via a connector. The right end assembly is slidably connected to the left end assembly, and the end of the right end assembly facing away from the left end assembly is rotatably connected to the double-layer cantilever truss structure. The disc spring assembly is sleeved and connected to the outside of the left end assembly, and the disc spring assembly is located between the left end assembly and the right end assembly; The right end assembly has a cavity, and the cavity is filled with the semi-solid viscous filler.

[0008] Furthermore, the left end assembly includes a left ear plate, a left end plate, a shaft, and a right end plate. The left ear plate is provided on one side of the left end plate, and the shaft is provided on the other side of the left end plate. The left ear plate is connected to one end of the lever via the connector; The shaft passes sequentially through the disc spring assembly and the right end assembly, and is then detachably connected to the right end plate.

[0009] Furthermore, the right end assembly includes two sets of right end units, which are detachably connected to form the right end assembly. Each set of right end units includes a right end body and a right ear plate. The two sets of right end bodies are detachably connected and enclose the cavity. Both ends of the cavity form through holes for the shaft to pass through. The cavity is provided with inclined cutter head structures on both sides to prevent the semi-solid viscous filler from flowing out. The right ear plate is connected to the end of the right end body that is away from the left end plate, and the right ear plate is rotatably connected to the double-layer cantilever truss structure through a connecting structure.

[0010] Furthermore, the viscous damping disc spring assembly structure also includes a rubber ring; A groove is provided at one end of the right end body, the rubber ring is embedded in the groove, and the rubber ring is located between the right end body and the right end plate; The right end plate is threaded, and the end of the shaft is threaded. The right end plate is threaded to the shaft.

[0011] Furthermore, one end of the lever is provided with a first ear plate, and the other end is provided with a second ear plate. The first ear plate is rotatably connected to the elongated hole ear plate of the frame column structure. The second ear plate is rotatably connected to the left ear plate; The lever has a shaft hole in the middle, and the shaft hole is rotatably connected to the double-layer cantilever truss structure through a connecting structure.

[0012] Furthermore, the double-layer cantilever truss structure is provided with an upper ear plate at the end opposite to the core tube; The first connecting end of the viscous damper is rotatably connected to the upper ear plate, and the second connecting end of the viscous damper is rotatably connected to the frame column structure; The viscous damper is provided in two sets, and both sets of the viscous damper are connected to the double-layer cantilever truss structure.

[0013] Furthermore, the frame column structure also includes a frame column body, a support block, and a lower ear plate, wherein the frame column body is provided with the support block; The support block is provided with the lower ear plate, which is rotatably connected to the second connecting end.

[0014] Furthermore, the double-layer cantilever truss structure includes a fixed-end upper chord, a free-end upper chord, a free-end lower chord, a fixed-end lower chord, a first web member, and a left-end bearing rib. One end of the fixed-end upper chord is used to connect with the core tube, and the other end is connected to the corresponding left-end bearing rib through two sets of free-end upper chords. The two sets of free-end upper chords are distributed at intervals outside the plane of the fixed-end upper chords; One end of the fixed end lower chord is used to connect with the core tube, and the other end is connected to the corresponding left end bearing rib through two sets of free end lower chords; The two sets of free-end lower chords are distributed at intervals outside the plane of the fixed-end lower chords; The left bearing rib is provided with the upper ear plate, and the left bearing rib is rotatably connected to the frame column structure; One end of the first web member is connected to the upper chord of the fixed end, and the other end is connected to the lower chord of the fixed end. The first web member is provided with a right-end bearing rib, which is connected to the viscous damping disc spring assembly structure through a connecting structure.

[0015] Furthermore, the double-layer cantilever truss structure also includes a second web member, one end of which is connected to the upper chord of the fixed end, and the other end is connected to the lower chord of the fixed end.

[0016] The present invention can achieve the following beneficial effects: In a first aspect, the present invention provides an adaptive damping negative stiffness energy dissipation outrigger system, comprising a double-layer outrigger truss structure, a frame column structure, a viscous damping disc spring assembly structure, a lever, and a viscous damper. One end of the double-layer outrigger truss structure is connected to an external core tube, and the other end of the double-layer outrigger truss structure is rotatably connected to the lever. One end of the viscous damping disc spring assembly structure is rotatably connected to the double-layer outrigger truss structure, and the other end of the viscous damping disc spring assembly structure is connected to one end of the lever. The other end of the lever, away from the viscous damping disc spring assembly structure, is connected to the frame column structure. One end of the viscous damper is rotatably connected to the frame column structure, and the other end of the viscous damper is rotatably connected to the end of the double-layer outrigger truss structure away from the core tube.

[0017] In this invention, multiple frame column structures are arranged around the core tube, and a double-layer cantilever truss structure is provided between the corresponding frame column structure and the core tube. One end of the double-layer cantilever truss structure is connected to the outer wall of the core tube, and the other end is connected to the corresponding frame column structure through a lever. The middle position of the lever is rotatably connected to the double-layer cantilever truss structure, while the end of the lever away from the frame column structure is rotatably connected to the viscous damping disc spring assembly structure. The viscous damper is used to connect the frame column structure and the end of the double-layer cantilever truss structure away from the core tube. When vibration occurs, the direction of the force is changed by the rotation of the lever, causing the viscous damping disc spring assembly structure to deform. During small and medium earthquakes, the viscous damping disc spring assembly structure only provides negative stiffness force by releasing the preload of the preload spring, which, together with the external viscous damper, achieves damping enhancement. Although the shaft will cut the internal semi-solid viscous filler and undergo shear deformation, the damping force is almost zero due to the geometric nonlinearity of the preload spring-lever mechanism. During a major earthquake, the preloaded disc springs of the viscous damping disc spring assembly release preload to provide negative stiffness force, while the shafts shear through the internal semi-solid viscous filler, providing additional damping force. During a mega-earthquake, the rubber rings are compressed, further providing additional stiffness and viscoelastic damping force, achieving energy dissipation and vibration reduction at four levels. The damping parameters at each stage are independent and can be designed separately. The double-layer cantilever truss structure provides end support for the lever bearings, effectively improving the out-of-plane stiffness of the lever while occupying minimal structural space. The viscous damping disc spring assembly integrates disc springs and viscous damping devices, combining two functions to provide both preload and viscous damping force while minimizing space requirements. All preload and tension are applied to non-load-bearing components such as the cantilever truss, ensuring structural safety.

[0018] In summary, this invention alleviates the technical problems existing in the prior art, such as poor applicability of viscous damping of negative stiffness energy dissipation outrigger devices, inability of a single damping parameter to adapt to the control requirements of multiple level ground motion responses, large space occupation in building structures, and insufficient out-of-plane stiffness of lever-preloaded spring mechanisms. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 2 This is a top view of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 3 This is a front view schematic diagram of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention in a static state. Figure 4 for Figure 3 A schematic diagram of the structure from the perspective of AA (Anti-Analog Devices). Figure 5 for Figure 3 A structural diagram from the BB's perspective; Figure 6 A front view schematic diagram of the double-layer cantilever truss structure of the adaptive damping negative stiffness energy dissipation cantilever system provided in an embodiment of the present invention; Figure 7 for Figure 6 A schematic diagram of the structure from the CC perspective; Figure 8 A bottom view of the double-layer cantilever truss structure of the adaptive damping negative stiffness energy dissipation cantilever system provided in an embodiment of the present invention. Figure 9 A side view of the double-layer cantilever truss structure of the adaptive damping negative stiffness energy dissipation cantilever system provided in an embodiment of the present invention. Figure 10 A front view schematic diagram of the frame column structure of the adaptive damping negative stiffness energy dissipation cantilever system provided in an embodiment of the present invention; Figure 11 A side view of the frame column structure of the adaptive damping negative stiffness energy dissipation cantilever system provided in an embodiment of the present invention; Figure 12This is a front view schematic diagram of the lever of the adaptive damping negative stiffness energy dissipation reacharm system provided in an embodiment of the present invention; Figure 13 A top view schematic diagram of the lever of the adaptive damping negative stiffness energy dissipation reacharm system provided in an embodiment of the present invention; Figure 14 A side view of the lever of the adaptive damping negative stiffness energy dissipation reacharm system provided in an embodiment of the present invention; Figure 15 A top view of the viscous damping disc spring assembly structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 16 for Figure 15 DD cross-sectional view; Figure 17 A front view schematic diagram of the viscous damping disc spring assembly structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 18 for Figure 17 EE cross-sectional view; Figure 19 The right view of the viscous damping disc spring assembly structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in the embodiment of the present invention; Figure 20 The left view of the viscous damping disc spring assembly structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in the embodiment of the present invention; Figure 21 This is a front view of the rubber ring of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention; Figure 22 for Figure 21 FF cross-section diagram; Figure 23 This is a front view of the right end plate of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 24 This is a front view of the left end assembly of the viscous damping disc spring group structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 25 A side view of the left end assembly of the viscous damping disc spring group structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 26 A front view schematic diagram of the right end component of the viscous damping disc spring assembly structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 27 A top view of the right end assembly of the viscous damping disc spring group structure of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 28A flowchart illustrating the assembly steps of a viscous damping disc spring assembly structure; Figure 29 This is a schematic diagram of the viscous damper of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention. Figure 30 This is a front view schematic diagram of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention under small deformation conditions. Figure 31 A front view schematic diagram of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention under large deformation conditions; Figure 32 A schematic diagram of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention in a static state; Figure 33 This is a schematic diagram of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention under small deformation conditions. Figure 34 A schematic diagram of the adaptive damping negative stiffness energy dissipation outrigger system provided in an embodiment of the present invention under large deformation conditions; Figure 35 The damping force hysteresis curve of the adaptive damping negative stiffness energy dissipation outrigger system viscous damping disc spring assembly output to the structure is provided in the embodiment of the present invention.

[0021] Icons: 1-Double-layer cantilever truss structure; 11-Fixed end upper chord; 12-Free end upper chord; 13-Free end lower chord; 14-Fixed end lower chord; 15-First web member; 151-Right end bearing rib; 16-Second web member; 17-Left end bearing rib; 171-Upper ear plate; 2-Frame column structure; 21-Frame column body; 22-Oblong hole ear plate; 23-Support block; 24-Lower ear plate; 3-Core tube; 4-Viscous damping disc spring assembly structure; 41-Left end assembly; 411-Left ear plate ; 412-Left end plate; 413-Shaft; 414-Right end plate; 42-Disc spring assembly; 43-Right end assembly; 431-Right end body; 4311-Cavity; 4312-Through hole; 4313-Groove; 432-Right ear plate; 44-Rubber ring; 45-Semi-solid viscous filler; 5-Lever; 51-First ear plate; 52-Second ear plate; 53-Shaft hole; 6-Viscous damper; 61-First connecting end; 62-Second connecting end; 7-Connecting structure; 71-Shaft; 72-Bearing. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this invention, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] Example 1 This embodiment provides an adaptive damping negative stiffness energy dissipation outrigger system, referring to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The adaptive damping negative stiffness energy dissipation outrigger system includes a double-layer outrigger truss structure 1, a frame column structure 2, a viscous damping disc spring assembly structure 4, a lever 5, and a viscous damper 6. One end of the double-layer outrigger truss structure 1 is connected to the external core tube 3, and the other end of the double-layer outrigger truss structure 1 is rotatably connected to the lever 5. One end of the viscous damping disc spring assembly structure 4 is rotatably connected to the double-layer outrigger truss structure 1, and the other end of the viscous damping disc spring assembly structure 4 is connected to one end of the lever 5. The other end of the lever 5 away from the viscous damping disc spring assembly structure 4 is connected to the frame column structure 2. One end of the viscous damper 6 is rotatably connected to the frame column structure 2, and the other end of the viscous damper 6 is rotatably connected to the end of the double-layer outrigger truss structure 1 away from the core tube 3.

[0030] The embodiments of the present invention alleviate the technical problems existing in the prior art, such as poor applicability of viscous damping of negative stiffness energy dissipation outrigger devices, inability of a single damping parameter to adapt to the control requirements of multiple level ground motion responses, large space occupation in building structures, and insufficient out-of-plane stiffness of lever-preloaded spring mechanisms.

[0031] In this embodiment of the invention, multiple frame column structures 2 are provided around the core tube 3, and a double-layer cantilever truss structure 1 is provided between the corresponding frame column structure 2 and the core tube 3. One end of the double-layer cantilever truss structure 1 is connected to the outer wall of the core tube 3, and the other end is connected to the corresponding frame column structure 2 through a lever 5. The middle position of the lever 5 is rotatably connected to the double-layer cantilever truss structure 1, while the end of the lever 5 away from the frame column structure 2 is rotatably connected to the viscous damping disc spring assembly structure 4. The viscous damper 6 is used to connect the frame column structure 2 and the end of the double-layer cantilever truss structure 1 away from the core tube 3. When vibration occurs, the direction of the force is changed by the rotation of the lever 5, causing the viscous damping disc spring assembly structure 4 to deform. During minor and moderate earthquakes, the viscous damping disc spring assembly 4 only uses the preloaded spring to release preload and provide negative stiffness force. This, combined with the external viscous damper 6, enhances damping efficiency. Although the shaft 413 cuts through the internal semi-solid viscous filler 45, causing shear deformation, the damping force is almost zero due to the geometric nonlinearity of the preloaded spring-lever mechanism. During major earthquakes, the preloaded disc spring of the viscous damping disc spring assembly 4 releases preload and provides negative stiffness force. Simultaneously, the shaft 413 cuts through the internal semi-solid viscous filler 45, causing shear deformation and providing additional damping force. During mega-earthquakes, the rubber ring 44 is compressed, further providing additional stiffness and viscoelastic damping force, achieving energy dissipation and vibration reduction at four levels. The damping parameters at each stage are independent and can be designed separately. The double-layer cantilever truss structure 1 provides end support for the lever bearing, effectively improving the out-of-plane stiffness of the lever. The viscous damping disc spring assembly structure 4 integrates disc springs and viscous damping devices, combining the two functions to provide both preload and viscous damping force while reducing space requirements. All preload and tension are applied to non-load-bearing components such as the outrigger truss, ensuring structural safety.

[0032] In an optional implementation of this embodiment, refer to Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 and Figure 23 The viscous damping disc spring assembly structure 4 includes a left end assembly 41, a disc spring assembly 42, a right end assembly 43, and a semi-solid viscous filler 45. The left end assembly 41 is rotatably connected to one end of the lever 5 via a connector. The right end assembly 43 is slidably connected to the left end assembly 41, and the end of the right end assembly 43 facing away from the left end assembly 41 is rotatably connected to the double-layer cantilever truss structure 1. The disc spring assembly 42 is sleeved and connected to the outside of the left end assembly 41, and the disc spring assembly 42 is located between the left end assembly 41 and the right end assembly 43. A cavity 4311 is opened in the right end assembly 43, and the cavity 4311 is filled with a semi-solid viscous filler 45.

[0033] Specifically: the left end assembly 41 and the right end assembly 43 are slidably connected, and a disc spring assembly 42 is provided between the left end assembly 41 and the right end assembly 43. The two ends of the disc spring assembly 42 are respectively connected to the left end assembly 41 and the right end assembly 43. The left end assembly 41 is rotatably connected to one end of the lever 5, while the right end assembly 43 is rotatably connected to the double-layer cantilever truss structure 1. It should be noted that the cavity 4311 formed by the shaft 413 of the right end assembly 43 and the left end assembly 41 is filled with a semi-solid viscous filler 45. The semi-solid viscous filler 45 can be polyisobutylene, which provides a damping effect for the sliding of the right end assembly 43 relative to the left end assembly 41.

[0034] It should be noted that the inner diameter of the cavity 4311 is 1-2 mm larger than the shaft diameter of the shaft 413, and the inner edge of the cavity 4311 is provided with a cutter head structure to prevent the semi-solid viscous filler 45 from flowing out.

[0035] Furthermore, referring to Figure 24 and Figure 25 The left end assembly 41 includes a left ear plate 411, a left end plate 412, a shaft 413, and a right end plate 414. The left end plate 412 has the left ear plate 411 on one side and the shaft 413 on the other side. The left ear plate 411 is connected to one end of the lever 5 through a connector. The shaft 413 passes through the disc spring assembly 42 and the right end assembly 43 in sequence and is detachably connected to the right end plate 414.

[0036] Specifically: One side of the left end plate 412 is provided with a left ear plate 411, which has a hole and is used to connect to the lever 5 by bolts and nuts; the other end of the left end plate 412 is provided with a shaft 413, which passes through the disc spring assembly 42 and the right end assembly 43 in sequence, and forms a cavity 4311 between the shaft 413 and the right end assembly 43; the other end of the shaft 413 has a threaded hole, and the right end plate 414 is provided with a threaded part. By connecting the threaded part to the threaded hole, the free end of the right end plate 414 and the shaft 413 can be detachably connected, so that the disc spring assembly 42 can be installed and then fixed by the right end plate 414.

[0037] Furthermore, referring to Figure 26 , Figure 27 and Figure 28The right end assembly 43 includes two sets of right end units, which are detachably connected to form the right end assembly 43. Each set of right end units includes a right end body 431 and a right ear plate 432. The two sets of right end bodies 431 are detachably connected and enclose a cavity 4311. Both ends of the cavity 4311 form through holes 4312 for the shaft 413 to pass through. Both sides of the cavity 4311 are provided with inclined cutter head structures to prevent the semi-solid viscous filler 45 from flowing out. The right ear plate 432 is connected to the end of the right end body 431 away from the left end plate 412, and the right ear plate 432 is rotatably connected to the double-layer cantilever truss structure 1 through the connecting structure 7.

[0038] Specifically: Two sets of right-end unit components are connected to form the right-end assembly 43, and the two sets of right-end unit components are connected by connectors on the outer wall of the right-end body 431. Specifically, multiple connectors distributed at intervals are aligned and connected by bolts and nuts. Each right-end body 431 is connected to a right ear plate 432, which has holes for rotatable connection with the double-layer cantilever truss structure 1 through a corresponding connecting structure 7. It should be noted that the connecting structure 7 includes a rotating shaft 71 and bearings 72. The bearings 72 are connected to the double-layer cantilever truss structure 1 and the right ear plate 432 through bearing clamps, and the rotating shaft 71 passes through multiple bearings 72 in sequence to enable the double-layer cantilever truss structure 1 and the right ear plate 432 to be rotatably connected through the connecting structure 7.

[0039] Furthermore, referring to Figure 4 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 , Figure 20 , Figure 21 , Figure 22 , Figure 23 , Figure 25 , Figure 26 and Figure 27 The viscous damping disc spring assembly structure 4 also includes a rubber ring 44; a groove 4313 is provided at one end of the right end body 431, the rubber ring 44 is embedded in the groove 4313, and the rubber ring 44 is located between the right end body 431 and the right end plate 414; the right end plate 414 is threaded, and the end of the shaft 413 is threaded, and the right end plate 414 is threaded to the shaft 413.

[0040] Specifically: a groove 4313 is provided at one end of the right end body 431, and correspondingly, a prototype groove is also provided on the right end plate 414. A rubber ring 44 is sandwiched between the two grooves, and the outer diameter of the prototype groove is 1-2 mm larger than that of the rubber ring 44. A thread is provided on the right end plate 414 that corresponds to the internal thread at the tail of the shaft 413. The device integrates a disc spring and a viscous damping device, combining two functions to provide both preload and viscous damping force while reducing the space occupied.

[0041] It should be noted that, referring to Figure 24 and Figure 28 The installation steps for the viscous damping disc spring assembly structure 4 are as follows: First, insert the disc spring assembly 42 onto the shaft 413 of the left end assembly 41, and then insert the rubber ring 44; subsequently, tighten the right end plate 414 of the left end assembly 41. Then, fill the cavities 4311 of the two right end units of the right end assembly 43 with semi-solid viscous filler 45, then wrap the shaft 413, and finally lock it with bolts. The installation is complete. The thickness of the rubber ring 44 can be adjusted according to the normal stiffness requirements of the structure under severe earthquakes.

[0042] In an optional implementation of this embodiment, refer to Figure 12 , Figure 13 and Figure 14 One end of the lever 5 is provided with a first ear plate 51, and the other end is provided with a second ear plate 52. The first ear plate 51 is rotatably connected to the elongated hole ear plate 22 of the frame column structure 2; the second ear plate 52 is rotatably connected to the left ear plate 411; the middle part of the lever 5 is provided with a shaft hole 53, and the shaft hole 53 is rotatably connected to the double-layer cantilever truss structure 1 through the connecting structure 7.

[0043] Specifically: The lever 5 has a first ear plate 51 and a second ear plate 52 at both ends, and both ear plates 51 and 52 have corresponding through holes. The first ear plate 51 is rotatably connected to the elongated hole ear plate 22 of the frame column structure 2 via bolts and nuts, allowing the lever 5 to rotate relative to the frame column structure 2 while providing lateral movement space. The second ear plate 52 is rotatably connected to the left ear plate 411 via bolts and nuts. A shaft hole 53 located near the middle of the lever 5 is used to pass through another set of corresponding rotating shafts 71, and is rotatably connected to the end of the double-layer cantilever truss structure 1 via the rotating shafts 71 and bearings 72.

[0044] In an optional implementation of this embodiment, refer to Figure 5 and Figure 29 The double-layer cantilever truss structure 1 has an upper ear plate 171 at one end away from the core tube 3; the first connecting end 61 of the viscous damper 6 is rotatably connected to the upper ear plate 171, and the second connecting end 62 of the viscous damper 6 is rotatably connected to the frame column structure 2; there are two sets of viscous dampers 6, and both sets of viscous dampers 6 are connected to the double-layer cantilever truss structure 1.

[0045] Specifically: The bottom of the left end bearing rib 17 of the double-layer cantilever truss structure 1 is provided with an upper ear plate 171. The upper ear plate 171 is rotatably connected to the first connecting end 61 located at the top of the viscous damper 6 by bolts and nuts, while the second connecting end 62 located at the bottom of the viscous damper 6 is rotatably connected to the frame column structure 2. It should be noted that, referring to... Figure 5 There can be two sets of viscous dampers 6, and the two sets of viscous dampers 6 are distributed side by side with intervals.

[0046] Furthermore, referring to Figure 10 and Figure 11 The frame column structure 2 also includes a frame column body 21, a support block 23 and a lower ear plate 24. The frame column body 21 is provided with a support block 23; the support block 23 is provided with a lower ear plate 24, and the lower ear plate 24 is rotatably connected to the second connecting end 62.

[0047] Specifically: The side wall of the frame column body 21 is provided with a support block 23, and the top of the support block 23 is provided with a corresponding lower ear plate 24. The lower ear plate 24 is used to rotatably connect with the second connection end 62 of the corresponding viscous damper 6 by bolts and nuts.

[0048] In an optional implementation of this embodiment, refer to Figure 6 , Figure 7 , Figure 8 and Figure 9 The double-layer cantilever truss structure 1 includes a fixed-end upper chord 11, a free-end upper chord 12, a free-end lower chord 13, a fixed-end lower chord 14, a first web member 15, and a left-end bearing rib 17. One end of the fixed-end upper chord 11 is connected to the core tube 3, and the other end is connected to the corresponding left-end bearing rib 17 through two sets of free-end upper chords 12. The two sets of free-end upper chords 12 are spaced apart outside the plane of the fixed-end upper chord 11. One end of the fixed-end lower chord 14 is connected to the core tube 3, and the other end is connected to the corresponding left-end bearing rib 17 through two sets of free-end upper chords 12. The free end lower chord 13 is connected to the corresponding left end bearing rib 17; the two sets of free end lower chords 13 are distributed at intervals outside the plane where the fixed end lower chord 14 is located; the left end bearing rib 17 is provided with an upper ear plate 171, and the left end bearing rib 17 is rotatably connected to the frame column structure 2; one end of the first web member 15 is connected to the fixed end upper chord 11, and the other end is connected to the fixed end lower chord 14, and the first web member 15 is provided with a right end bearing rib 151, and the right end bearing rib 151 is connected to the viscous damping disc spring assembly structure 4 through the connecting structure 7.

[0049] Specifically: the fixed end upper chord 11 is distributed laterally, and one end of it is connected to the outer wall of the core tube 3, while the other end of the fixed end upper chord 11 is connected to the left end bearing rib 17 through the free end upper chord 12; correspondingly, one end of the fixed end lower chord 14 is connected to the core tube 3, and the other end is connected to the left end bearing rib 17 through the free end lower chord 13, while the first end of the fixed end upper chord 11 and the first end of the fixed end lower chord 14 are connected through the first web member 15, and a right end bearing rib 151 is provided on the first web member 15, which is used to rotatably connect with one end of the viscous damping disc spring assembly structure 4.

[0050] It should be emphasized that both the upper chord 12 and the lower chord 13 at the free end are provided in two sets to make the connection between the double-layer cantilever truss structure 1 and the lever 5 more secure.

[0051] Furthermore, referring to Figure 6 , Figure 7 , Figure 8 and Figure 9 The double-layer cantilever truss structure 1 also includes a second web member 16, one end of which is connected to the upper chord member 11 at the fixed end, and the other end is connected to the lower chord member 14 at the fixed end.

[0052] Specifically: one end of the second web member 16 is connected to the first end of the fixed end lower chord member 14, and the other end of the second web member 16 is connected to the second end of the fixed end upper chord member 11, so that the second web member 16 is in an inclined setting state. In this way, within the rectangular space enclosed by the fixed end upper chord member 11, the fixed end lower chord member 14, the first web member 15 and the outer wall of the core tube 3, the second web member 16 provides diagonal bracing support, making the overall structure more stable and durable.

[0053] During use, refer to Figure 3 , Figure 32 and Figure 35 When there is no relative displacement between the end of the double-layer cantilever truss structure 1 and the elongated hole ear plate 22, the lever 5 and the viscous damping disc spring group structure 4 are in the same straight line. At this time, the viscous damping disc spring group structure 4 is in a critical equilibrium state, and all the spring preload is applied to the lever 5 and the double-layer cantilever truss structure 1.

[0054] Under small and moderate earthquakes, the core tube 3 bends, causing the end of the double-layer cantilever truss structure 1 to displace relative to the elongated oval ear plate 22 of the frame column structure 2. At this time, the lever 5 is activated, and the viscous damping disc spring assembly 4 is not on the same straight line as the lever 5. The disc spring assembly 42 begins to release the preload and pry the lever 5 to push the end of the double-layer cantilever truss structure 1 to displace further relative to the elongated oval ear plate 22 of the frame column structure 2, thereby causing the viscous damper 6 to displace even further. Under small and moderate earthquakes, the damping force provided by the viscous damping disc spring assembly 4 is very small and can be ignored. The damping force is entirely provided by the viscous damper 6.

[0055] Under a major earthquake, refer to Figure 30 and Figure 33 As the shaft 413 undergoes axial displacement, it causes the semi-solid viscous filler 45 to undergo shear deformation, thus providing energy dissipation. The increased damping force provided by the viscous damping disc spring assembly structure 4, together with the viscous damper 6, provides damping force for energy dissipation.

[0056] Under the influence of a massive earthquake, refer to Figure 31 and Figure 34 After the preload of disc spring assembly 42 is released and it ceases operation, the groove 4313 of the right end body 431 closes with the groove of the right end plate 414, compressing the rubber ring 44. Due to this compression, the rubber ring provides a force that hinders the displacement of the right end of lever 5 and a viscous damping force. The end of the double-layer cantilever truss structure 1 undergoes a further, larger displacement relative to the elongated ear plate 22 of the frame column structure 2, generating a positive stiffness force. The cavity volume of the groove 4313 of the right end body 431 and the groove of the right end plate 414 after closing is smaller than the volume of the rubber ring 44, ensuring that the rubber ring 44 is compressed in all directions during closure, fully utilizing the viscoelastic compressive force characteristics of the material. This positive stiffness force can prevent structural damage during major earthquakes. Furthermore, as... Figure 35 As shown, the hysteresis curve provided by the adaptive damping negative stiffness mechanism is spindle-shaped because the relationship between the vertical displacement of the left end of lever 5 and the axial relative displacement of the viscous damping disc spring assembly 4 is nonlinear. Therefore, the spindle-shaped adaptive damping force can only be achieved by combining the viscous damping disc spring assembly 4 with lever 5.

[0057] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments in this specification are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive damping negative stiffness energy dissipation outrigger system, characterized in that, It includes a double-layer cantilever truss structure (1), a frame column structure (2), a viscous damping disc spring assembly structure (4), a lever (5) and a viscous damper (6). One end of the double-layer cantilever truss structure (1) is used to connect with the external core tube (3), and the other end of the double-layer cantilever truss structure (1) is rotatably connected to the lever (5). One end of the viscous damping disc spring assembly (4) is rotatably connected to the double-layer cantilever truss structure (1), and the other end of the viscous damping disc spring assembly (4) is connected to one end of the lever (5). The other end of the lever (5) away from the viscous damping disc spring assembly (4) is used to connect to the frame column structure (2); One end of the viscous damper (6) is rotatably connected to the frame column structure (2), and the other end of the viscous damper (6) is rotatably connected to the end of the double-layer cantilever truss structure (1) away from the core tube (3).

2. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 1, characterized in that, The viscous damping disc spring assembly structure (4) includes a left end assembly (41), a disc spring assembly (42), a right end assembly (43), and a semi-solid viscous filler (45). The left end assembly (41) is rotatably connected to one end of the lever (5) via a connector. The right end assembly (43) is slidably connected to the left end assembly (41), and the end of the right end assembly (43) facing away from the left end assembly (41) is rotatably connected to the double-layer cantilever truss structure (1). The disc spring assembly (42) is sleeved and connected to the outside of the left end assembly (41), and the disc spring assembly (42) is located between the left end assembly (41) and the right end assembly (43); The right end assembly (43) has a cavity (4311) and the cavity (4311) is filled with the semi-solid viscous filler (45).

3. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 2, characterized in that, The left end assembly (41) includes a left ear plate (411), a left end plate (412), a shaft (413) and a right end plate (414). The left ear plate (411) is provided on one side of the left end plate (412), and the shaft (413) is provided on the other side of the left end plate (412). The left ear plate (411) is connected to one end of the lever (5) via the connector; The shaft (413) passes through the disc spring assembly (42) and the right end assembly (43) in sequence and is detachably connected to the right end plate (414).

4. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 3, characterized in that, The right end assembly (43) includes two sets of right end units, which are detachably connected to form the right end assembly (43). Each set of right end units includes a right end body (431) and a right ear plate (432). The two sets of right end bodies (431) are detachably connected and enclose the cavity (4311). Both ends of the cavity (4311) form through holes (4312) for the shaft (413) to pass through. The cavity (4311) is provided with inclined blade structures on both sides to prevent the semi-solid viscous filler (45) from flowing out. The right ear plate (432) is connected to the right end body (431) at the end opposite to the left end plate (412), and the right ear plate (432) is rotatably connected to the double-layer cantilever truss structure (1) through the connecting structure (7).

5. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 4, characterized in that, The viscous damping disc spring assembly structure (4) also includes a rubber ring (44). A groove (4313) is provided at one end of the right end body (431), the rubber ring (44) is embedded in the groove (4313), and the rubber ring (44) is located between the right end body (431) and the right end plate (414); The right end plate (414) is threaded, and the end of the shaft (413) is threaded. The right end plate (414) is threaded to the shaft (413).

6. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 3, characterized in that, One end of the lever (5) is provided with a first ear plate (51) and the other end is provided with a second ear plate (52). The first ear plate (51) is rotatably connected to the elongated hole ear plate (22) of the frame column structure (2). The second ear plate (52) is rotatably connected to the left ear plate (411); The lever (5) has a shaft hole (53) in the middle, and the shaft hole (53) is rotatably connected to the double-layer cantilever truss structure (1) through the connecting structure (7).

7. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 1, characterized in that, The double-layer cantilever truss structure (1) has an upper ear plate (171) at one end away from the core tube (3). The first connecting end (61) of the viscous damper (6) is rotatably connected to the upper ear plate (171), and the second connecting end (62) of the viscous damper (6) is rotatably connected to the frame column structure (2). The viscous damper (6) is provided in two sets, and both sets of the viscous damper (6) are connected to the double-layer cantilever truss structure (1).

8. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 7, characterized in that, The frame column structure (2) also includes a frame column body (21), a support block (23) and a lower ear plate (24), wherein the frame column body (21) is provided with the support block (23). The support block (23) is provided with the lower ear plate (24), and the lower ear plate (24) is rotatably connected to the second connecting end (62).

9. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 7, characterized in that, The double-layer cantilever truss structure (1) includes a fixed-end upper chord (11), a free-end upper chord (12), a free-end lower chord (13), a fixed-end lower chord (14), a first web member (15), and a left-end bearing rib (17). One end of the fixed-end upper chord (11) is used to connect with the core tube (3), and the other end is connected to the corresponding left-end bearing rib (17) through two sets of free-end upper chords (12). The two sets of free end upper chords (12) are distributed at intervals outside the plane where the fixed end upper chord (11) is located; One end of the fixed end lower chord (14) is used to connect with the core tube (3), and the other end is connected to the corresponding left end bearing rib (17) through two sets of free end lower chords (13); The two sets of free end lower chords (13) are distributed at intervals outside the plane where the fixed end lower chord (14) is located; The left end bearing rib (17) is provided with the upper ear plate (171), and the left end bearing rib (17) is rotatably connected to the frame column structure (2). One end of the first web member (15) is connected to the upper chord (11) of the fixed end, and the other end is connected to the lower chord (14) of the fixed end. The first web member (15) is provided with a right end bearing rib (151), and the right end bearing rib (151) is connected to the viscous damping disc spring assembly structure (4) through the connecting structure (7).

10. The adaptive damping negative stiffness energy dissipation outrigger system according to claim 9, characterized in that, The double-layer cantilever truss structure (1) also includes a second web member (16), one end of which is connected to the upper chord member (11) at the fixed end, and the other end is connected to the lower chord member (14) at the fixed end.

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