X-type outrigger truss lever type negative stiffness energy dissipation outrigger system

Abstract

The application provides an X-shaped outrigger truss lever type negative stiffness energy dissipation outrigger system, relates to the technical field of negative stiffness energy dissipation shock absorption in the technical field of building engineering, and comprises a core tube, a frame column, an X-shaped outrigger truss and a double shock absorption component, wherein the double shock absorption component comprises a displacement amplification lever, an upper damper, a lower damper, an upper pre-pressing spring and a lower pre-pressing spring; in an initial state, the axis of the upper pre-pressing spring, the hinge joint of the upper end of the displacement amplification lever and the upper damper, the hinge joint of the lower end of the displacement amplification lever and the lower damper, and the axis of the upper pre-pressing spring are in the same straight line. The application combines the displacement amplification mechanism of a lever type mechanism and the lever type negative stiffness displacement amplification mechanism, has a double displacement amplification effect, the pre-pressing force is entirely applied to a non-load-bearing component, and two groups of pre-pressing springs and dampers can be arranged on one outrigger truss to generate a double damping energy dissipation effect.

Description

Technical Field

[0001] This invention relates to the field of negative stiffness energy dissipation and vibration reduction technology in building engineering, and particularly to an X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system. Background Technology

[0002] In architectural engineering, the frame-core tube structure system has become a very common structural system in the development of high-rise and super high-rise structures due to its ability to accommodate both large open spaces and lateral force resistance. To control 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, high-stiffness outrigger trusses connect 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 trusses to rotate, which in turn generates tensile and compressive deformation in the outer columns, enabling the core tube and outer frame to jointly resist external loads.

[0003] In current technological advancements, some engineers have disconnected the columns at the cantilever end and installed energy-dissipating components such as viscous dampers and buckling-restrained braces at the connection between the outer frame columns and the cantilever end. By utilizing the relatively large vertical deformation (often tens or even hundreds of millimeters) concentrated between the cantilever end and the outer frame columns, the energy-dissipating capacity of these components is fully utilized. This type of vibration reduction system can effectively control the inter-story drift angle and acceleration response of the frame-core tube structure under wind-induced vibration and seismic loads.

[0004] To address the challenge of improving the damping effect of energy-dissipating outrigger structures when the axial stiffness of the outer frame columns is insufficient, and also to reduce the high damping requirements of large-scale structures, some researchers have introduced negative stiffness devices into energy-dissipating outrigger structures. The negative stiffness mechanism provides a negative stiffness force in the same direction as the displacement, thus promoting relative displacement at both ends. By connecting the negative stiffness device in parallel with a damper, and then in series with the column, a negative stiffness amplification device (NSAD) is formed. During wind-induced vibrations or earthquakes, relative displacement occurs between the outrigger end and the column. The negative stiffness device further outputs a negative stiffness force, pushing the column and outrigger end to undergo even greater displacement, thereby causing the damper connected in parallel with the negative stiffness device to undergo even greater displacement, increasing the hysteretic energy dissipation of the damper.

[0005] However, existing negative stiffness energy dissipation outrigger structures have the following problems:

[0006] (1) The preload spring of the negative stiffness device for outrigger has a large preload and acts directly on important load-bearing structural components such as frame columns, which seriously affects the safety of the main structural components.

[0007] (2) Existing technical solutions can only arrange one set of dampers and negative stiffness devices in a single outrigger truss. However, the damping capacity of a single outrigger is limited. If we want to further improve the damping effect of the structure, we need to arrange multiple energy dissipation outrigger trusses to install more damping components and increase the amount of steel used.

[0008] (3) The existing negative stiffness energy dissipation outrigger has low integration, scattered parts, poor assembly, and high installation difficulty. Summary of the Invention

[0009] The purpose of this invention is to provide an X-type outrigger truss lever-type negative stiffness energy dissipation outrigger system to alleviate the above-mentioned technical problems existing in the prior art.

[0010] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0011] This invention provides an X-type outrigger truss lever-type negative stiffness energy dissipation outrigger system, comprising: a core tube disposed at the center of the building structure, frame columns disposed on the periphery of the building structure, and an outrigger truss assembly connecting the core tube and the frame columns; the outrigger truss assembly includes:

[0012] An X-shaped outrigger truss includes a rigidly connected upper chord, upper web members, lower web members, and lower chord. The upper and lower chords extend horizontally. The first ends of the upper and lower chords are fixedly connected to the core tube, and the second ends of both the upper and lower chords face the frame column. The upper and lower web members are located between the upper and lower chords, including a first and a second upper web member that cross at a first intersection node. The lower web member is located between the upper web members and the lower chord. Between them, there are a first lower web member and a second lower web member that are cross-connected at the second intersection node; the upper end of the first upper web member is connected to the first end of the upper chord, the upper end of the second upper web member is connected to the second end of the upper chord, the upper end of the first lower web member and the lower end of the second upper web member are connected to the first connection node, the upper end of the second lower web member and the lower end of the first upper web member are connected to the second connection node, the lower end of the first lower web member is connected to the second end of the lower chord, and the lower end of the second lower web member is connected to the first end of the lower chord.

[0013] A dual damping member, disposed between the X-shaped outrigger truss and the frame column, includes:

[0014] The displacement amplification lever is hinged to the second connecting node on one side of its middle section and to the frame column on the other side of its middle section.

[0015] The damper includes an upper damper and a lower damper. The upper damper is located between the first intersection node and the frame column, with one end hinged to the first intersection node and the other end hinged to the upper end of the displacement amplifying lever. The lower damper is located between the second intersection node and the frame column, with one end hinged to the second intersection node and the other end hinged to the lower end of the displacement amplifying lever.

[0016] The preload spring includes an upper preload spring and a lower preload spring. The upper end of the upper preload spring is hinged to the second end of the upper chord rod, and the lower end is hinged to the upper end of the displacement amplifying lever. The lower end of the lower preload spring is hinged to the second end of the lower chord rod, and the upper end is hinged to the lower end of the displacement amplifying lever.

[0017] With the hinge point between the upper damper and the upper end of the displacement amplifying lever as the first hinge point, and the hinge point between the lower damper and the lower end of the displacement amplifying lever as the second hinge point, in the initial state, the axis of the upper preload spring, the first hinge point, the second hinge point, and the axis of the upper preload spring are on the same straight line.

[0018] In an optional embodiment, the middle part of the displacement amplifying lever is provided with a column connection hole on the side away from the second connection node, and the frame column is provided with a frame column ear plate on the side facing the second connection node. The frame column ear plate is provided with a hinge elongated hole extending laterally, which is used to engage with the hinge and the column connection hole of the displacement amplifying lever.

[0019] In an optional embodiment, the second connecting node is provided with a truss lever connecting hole, and the middle part of the displacement amplifying lever is provided with an outrigger truss connecting hole on the side facing the second connecting node. The displacement amplifying lever is hinged to the truss lever connecting hole through the outrigger truss connecting hole and the hinge member.

[0020] In an optional embodiment, the upper end of the displacement amplifying lever is provided with an upper damper connection hole for hinged connection between the hinge member and the damper lever connection hole provided at the end of the upper damper; the lower end of the displacement amplifying lever is provided with a lower damper connection hole for hinged connection between the hinge member and the damper lever connection hole provided at the end of the lower damper.

[0021] And / or, the first cross node is provided with an upper web ear plate, which is used to engage with the hinge member and the web ear plate connection hole provided at the end of the upper damper; the second cross node is provided with a lower web ear plate, which is used to engage with the hinge member and the web ear plate connection hole provided at the end of the lower damper.

[0022] In an optional embodiment, the upper end of the displacement amplification lever is provided with an upper preload spring ear plate, and the upper preload spring ear plate is provided with a hinge hole for engaging with the hinge component and the preload spring lever connection hole provided at the lower end of the upper preload spring; the lower end of the displacement amplification lever is provided with a lower preload spring ear plate, and the lower preload spring ear plate is provided with a hinge hole for engaging with the hinge component and the preload spring lever connection hole provided at the upper end of the lower preload spring.

[0023] And / or, the second end of the upper chord is provided with an upper chord lug plate extending downward, and the upper chord lug plate is provided with a hinge hole for hinged connection with the chord lug plate connection hole provided at the upper end of the upper preload spring; the second end of the lower chord is provided with a lower chord lug plate extending upward, and the lower chord lug plate is provided with a hinge hole for hinged connection with the chord lug plate connection hole provided at the lower end of the lower preload spring.

[0024] In an optional embodiment, both the first cross node and the second cross node have an extension on one side facing the frame column to increase the installation area.

[0025] In an optional implementation, the hinge point between the second cross node and the displacement amplifying lever is taken as the third hinge point, and the hinge point between the displacement amplifying lever and the frame column is taken as the fourth hinge point; the distance L2 between the first hinge point or the second hinge point and the third hinge point is greater than the distance L1 between the fourth hinge point and the third hinge point.

[0026] In an optional embodiment, the displacement amplification lever has a receiving cavity on the side facing the X-shaped cantilever truss, for accommodating the portion where the upper end of the second lower web member is connected to the lower end of the first upper web member at the second connecting node, the upper end of the upper damper, and the upper end of the lower damper.

[0027] In an optional implementation, the first connection node is fixedly connected to the core tube.

[0028] In an optional embodiment, the damper is a viscous damper.

[0029] In particular, in the embodiments of the present invention, "and / or" means that the first feature before "and / or" and the second feature after "and / or" include the following specific settings: (1) only the first feature is set, and the second feature is not set; (2) only the second feature is set, and the first feature is not set; (3) the first feature and the second feature are set at the same time.

[0030] The embodiments of the present invention can achieve at least the following beneficial effects:

[0031] (1) The dual damping components form a lever mechanism, which integrates the dual displacement amplification mechanism of lever displacement amplification and negative stiffness displacement amplification, thereby amplifying the energy consumption of the damper twice. Under the condition that the damper viscosity coefficient and negative stiffness values ​​are the same, the damping effect of the damper is significantly increased. The lever mechanism amplifies the negative stiffness force and damping force, and can be configured with a smaller damping coefficient and preload spring stiffness to achieve the same or better damping effect as the existing technology, reduce costs, and improve economic applicability.

[0032] (2) The preload spring that generates negative stiffness force is entirely applied to the displacement amplification lever and the X-shaped cantilever truss, acting on non-load-bearing components. Even if damaged, it will not affect the structural function and can ensure structural safety.

[0033] (3) Two sets of preloaded springs and dampers are allowed to be arranged on the upper and lower parts of the X-type cantilever truss. Compared with the existing technical solutions, it can generate double the damping energy dissipation effect on a cantilever truss without increasing the amount of steel used in the cantilever truss.

[0034] (4) All parts are integrated on the X-type cantilever truss, which has good assemblability and does not require on-site assembly. They can be directly installed on the structure after leaving the factory.

[0035] (5) The integration of lever displacement amplification mechanism and lever negative stiffness device results in a compact device that occupies little space.

[0036] For details on the specific principles of the embodiments of the present invention, please refer to the Detailed Description of the Embodiments section of this application. Attached Figure Description

[0037] 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.

[0038] Figure 1 This is a front view of the X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system provided in the embodiment of the present invention;

[0039] Figure 2 This is a top view of the X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system provided in the embodiment of the present invention;

[0040] Figure 3 This is a front view of the installation structure of the outrigger truss assembly in an embodiment of the present invention;

[0041] Figure 4 yes Figure 3 Sectional view along the AA direction of the cantilever truss assembly;

[0042] Figure 5a This is a front view of the frame column in an embodiment of the present invention;

[0043] Figure 5b This is a side view of the frame column in an embodiment of the present invention;

[0044] Figure 6 This is a front view of the X-type cantilever truss in an embodiment of the present invention;

[0045] Figure 7 This is a side view of the X-shaped outrigger truss in an embodiment of the present invention;

[0046] Figure 8a This is a front view of the displacement amplification lever in an embodiment of the present invention;

[0047] Figure 8b This is a side view of the displacement amplification lever in an embodiment of the present invention;

[0048] Figure 8c yes Figure 8b A cross-sectional view of the mid-displacement magnifying lever along the BB direction;

[0049] Figure 9a This is a front view of the preloaded spring in an embodiment of the present invention;

[0050] Figure 9b This is a side view of the preloaded spring in an embodiment of the present invention;

[0051] Figure 10a This is a front view of the damper in an embodiment of the present invention;

[0052] Figure 10b This is a side view of the damper in an embodiment of the present invention;

[0053] Figure 11 This is a front view of the vertical relative displacement between the end of the X-type cantilever truss lever-type negative stiffness energy dissipation cantilever truss and the frame column provided in the embodiment of the present invention;

[0054] Figure 12a This is a schematic diagram of the displacement amplification principle of the X-type cantilever truss lever-type negative stiffness energy dissipation cantilever lever mechanism provided in the embodiment of the present invention (before deformation).

[0055] Figure 12b This is a schematic diagram of the displacement amplification principle of the X-type outrigger truss lever-type negative stiffness energy dissipation outrigger lever mechanism provided in the embodiment (after deformation).

[0056] Figure 13a This is a schematic diagram of the principle of the lever-type negative stiffness energy dissipation outrigger displacement amplification mechanism of the X-type outrigger truss provided in the embodiment (before deformation).

[0057] Figure 13b This is a schematic diagram of the principle of the lever-type negative stiffness energy dissipation outrigger displacement amplification mechanism of the X-type outrigger truss provided in the embodiment (after deformation).

[0058] Icon: 1 - Core tube;

[0059] 2-Frame column; 201-Frame column ear plate; 202-Hinged elongated hole;

[0060] 100-Outrigger Truss Assembly;

[0061] 3-X-type cantilever truss; 31-first intersection node; 32-second intersection node; 33-first connection node; 34-second connection node; 35-extension;

[0062] 301 - Upper chord; 302 - First upper web member; 303 - Second upper web member; 304 - First lower web member; 305 - Second lower web member; 306 - Lower chord; 307 - Upper chord lug plate; 308 - Upper web lug plate; 309 - Lower web lug plate; 310 - Lower chord lug plate; 311 - Truss lever connection hole;

[0063] 4-Displacement amplification lever; 41-Receiving cavity; 401-Upper preload spring ear plate; 402-Lower preload spring ear plate; 403-Upper damper connection hole; 404-Outrigger truss connection hole; 405-Lower damper connection hole; 406-Column connection hole;

[0064] 5-Preload spring; 51-Upper preload spring; 52-Lower preload spring; 501-Preload spring lever connection hole; 502-String member ear plate connection hole;

[0065] 6-Damper; 61-Upper damper; 62-Lower damper; 601-Damper lever connection hole; 602-Web plate ear plate connection hole. Detailed Implementation

[0066] 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.

[0067] 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.

[0068] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0069] In the description of this invention, it should be noted that:

[0070] 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 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.

[0071] The terms “upper,” “lower,” “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 in which the product of the invention is usually placed when in use. They are used only for the convenience of describing the 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. Therefore, they should not be construed as limiting the invention.

[0072] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate totality or relative position in time and / or space, nor should they be construed as indicating or implying relative importance.

[0073] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features of the following embodiments and optional embodiments can be combined with each other.

[0074] This embodiment provides an X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system, referring to... Figures 1 to 10b The X-type outrigger truss lever-type negative stiffness energy dissipation outrigger system includes a core tube 1 located at the center of the building structure, frame columns 2 located on the periphery of the building structure, and an outrigger truss assembly 100 connecting the core tube 1 and the frame columns 2. The outrigger truss assembly 100 includes an X-type outrigger truss 3 and dual damping components.

[0075] The X-shaped outrigger truss 3 includes a rigidly connected upper chord 301, upper web members, lower web members, and lower chord 306. Both the upper chord 301 and lower chord 306 extend horizontally. The first end of both the upper chord 301 and the lower chord 306 is fixedly connected to the core tube 1, and the second end of both the upper chord 301 and the lower chord 306 faces the frame column 2. The upper web members and lower web members are located between the upper chord 301 and the lower chord 306, including a first upper web member 302 and a second upper web member 303 that are cross-connected at the first intersection node 31. The lower web member is located between the upper web member and the lower chord 306, encompassing... The first lower web member 304 and the second lower web member 305 are connected at the second intersection node 32. The upper end of the first upper web member 302 is connected to the first end of the upper chord member 301, the upper end of the second upper web member 303 is connected to the second end of the upper chord member 301, the upper end of the first lower web member 304 and the lower end of the second upper web member 303 are connected to the first connection node 33, the upper end of the second lower web member 305 and the lower end of the first upper web member 302 are connected to the second connection node 34, the lower end of the first lower web member 304 is connected to the second end of the lower chord member 306, and the lower end of the second lower web member 305 is connected to the first end of the lower chord member 306.

[0076] A dual damping component is located between the X-shaped cantilever truss 3 and the frame column 2, including a displacement amplifying lever 4, a damper 6, and a preload spring 5. Specifically: one side of the middle of the displacement amplifying lever 4 is hinged to the second connecting node 34, and the other side of the middle of the displacement amplifying lever 4 is hinged to the frame column 2; the damper 6 includes an upper damper 61 and a lower damper 62. The upper damper 61 is located between the first intersection node 31 and the frame column 2, with one end of the upper damper 61 hinged to the first intersection node 31 and the other end of the upper damper 61 hinged to the upper end of the displacement amplifying lever 4; the lower damper... 62 is located between the second intersection node 32 and the frame column 2. One end of the lower damper 62 is hinged to the second intersection node 32, and the other end of the lower damper 62 is hinged to the lower end of the displacement amplifying lever 4. The preload spring 5 includes an upper preload spring 51 and a lower preload spring 52. The upper end of the upper preload spring 51 is hinged to the second end of the upper chord 301, and the lower end of the upper preload spring 51 is hinged to the upper end of the displacement amplifying lever 4. The lower end of the lower preload spring 52 is hinged to the second end of the lower chord 306, and the upper end of the lower preload spring 52 is hinged to the lower end of the displacement amplifying lever 4.

[0077] Reference Figure 3 The hinge point between the upper damper 61 and the upper end of the displacement amplification lever 4 is the first hinge point, and the hinge point between the lower damper 62 and the lower end of the displacement amplification lever 4 is the second hinge point. In the initial state, the axis of the upper preload spring 51, the first hinge point, the second hinge point, and the axis of the upper preload spring 51 are on the same straight line.

[0078] In this embodiment, the dual damping component consists of a damper 6 and a preload spring 5 mounted around a displacement amplification lever 4 to form a lever mechanism. Structural displacement drives the displacement amplification lever 4 to rotate, thereby causing the damper 6 and the preload spring 5 to undergo greater displacement. This integrates the displacement amplification mechanism of a lever mechanism with a lever-type negative stiffness displacement amplification mechanism, achieving a dual displacement amplification effect. (Refer to...) Figure 3 as well as Figures 11 to 13b Its dual displacement amplification principle is as follows:

[0079] like Figure 11 As shown, this illustrates the deformation of the X-type outrigger truss lever-type negative stiffness energy dissipation outrigger system under wind or seismic load excitation when relative displacement occurs.

[0080] The principle of displacement amplification of lever mechanism is as follows: Figure 12a and Figure 12b As shown, when the relative displacement between the X-shaped cantilever truss 3 and the frame column 2 is... The end displacements of each damper 6 are respectively ;in As the amplification factor, the hinge point between the upper damper 61 and the upper end of the displacement amplifying lever 4 is the first hinge point; the hinge point between the lower damper 62 and the lower end of the displacement amplifying lever 4 is the second hinge point; the hinge point between the second cross node 32 and the displacement amplifying lever 4 is the third hinge point; and the hinge point between the displacement amplifying lever 4 and the frame column 2 is the fourth hinge point. L2 is the distance between the first or second hinge point and the third hinge point, and L1 is the distance between the fourth hinge point and the third hinge point. L2 is greater than L1.

[0081] The displacement amplification principle of the negative stiffness mechanism is as follows: Figure 13a and Figure 13b As shown, the hinge point between the upper damper 61 and the upper end of the displacement amplifying lever 4 is the first hinge point, and the hinge point between the lower damper 62 and the lower end of the displacement amplifying lever 4 is the second hinge point. When there is no relative displacement between the end of the X-shaped cantilever truss 3 and the frame column 2, i.e., in the initial state, as shown... Figure 13a When the axis of the upper preload spring 51, the first hinge point, the second hinge point, and the axis of the upper preload spring 51 are all on the same straight line, all preload springs 5 ​​are in a critical equilibrium state, and all spring preload forces act on the displacement amplification lever 4 and the X-shaped cantilever truss 3, with negative stiffness force = 0. When the end of the X-shaped cantilever truss 3 undergoes relative displacement with the frame column 2, such as Figure 13bWhen the displacement amplifying lever 4 rotates, the axis of the upper preload spring 51, the first hinge point, the second hinge point, and the axis of the upper preload spring 51 are no longer on a straight line. The preload spring 5 pushes the displacement amplifying lever 4 to deviate further, generating a force in the same direction as the deviation, which is a negative stiffness force. The negative stiffness force will push the displacement amplifying lever 4 to cause the damper 6 to undergo a larger displacement, thereby achieving the damping effect of the damper 6.

[0082] This embodiment can achieve at least the following beneficial effects:

[0083] (1) The dual damping components form a lever mechanism, which integrates the dual displacement amplification mechanism of lever displacement amplification and negative stiffness displacement amplification, so that the energy consumption of damper 6 is amplified twice. Under the condition that the viscosity coefficient and negative stiffness of damper 6 are the same, the damping effect of damper 6 is significantly increased. The lever mechanism amplifies the negative stiffness force and damping force, and can be configured with a smaller damping coefficient and preload spring 5 stiffness to achieve the same or better damping effect as the existing technology, reduce costs and improve economic applicability.

[0084] (2) The preload of the preload spring 5 that generates negative stiffness force is entirely applied to the displacement amplification lever 4 and the X-type cantilever truss 3. It acts on non-load-bearing components. Even if it is damaged, it will not affect the structural function and can ensure the structural safety.

[0085] (3) Two sets of preloaded springs and dampers are allowed to be arranged on the upper and lower sides of the X-type cantilever truss 3. Compared with the existing technical solutions, it can generate double the damping energy dissipation effect on a cantilever truss without increasing the amount of steel used in the cantilever truss.

[0086] (4) All parts are integrated on the X-type cantilever truss, which has good assemblability and does not require on-site assembly. They can be directly installed on the structure after leaving the factory.

[0087] (5) The integration of lever displacement amplification mechanism and lever negative stiffness device results in a compact device that occupies little space.

[0088] It should be noted that: In this embodiment, each member of the X-type outrigger truss 3 can be made of square steel, I-beam steel, H-beam steel, or other steel or other metal materials with different cross-sectional shapes; the lateral length of the upper chord 301 or lower chord 306 of the X-type outrigger truss 3 can be designed as needed to change the angle of the web members at the intersection of the X-type outrigger truss 3 to meet different building requirements; the specific hinged methods between the hinged parts include, but are not limited to, hinged by bolt and nut assemblies or pins or other hinged parts, in conjunction with hinged holes, or hinged by rotating joint connectors or hinges.

[0089] Reference Figure 3 , Figure 5a , Figure 5b ,as well as Figures 8a to 8c In an optional embodiment of this example, a column connection hole 406 is provided on the side of the displacement amplifying lever 4 away from the second connecting node 34, and a frame column ear plate 201 is provided on the side of the frame column 2 facing the second connecting node 34. The frame column ear plate 201 is provided with a hinge elongated hole 202 extending laterally, which is used to engage with bolt and nut assemblies, pins or other hinge components and hinge with the column connection hole 406 of the displacement amplifying lever 4. In this embodiment, by designing a hinge elongated hole 202 extending laterally instead of a traditional circular hinge hole, the necessary lateral adjustment space is provided for the displacement amplifying lever 4, effectively decoupling the small lateral displacement constraint generated during the rotation of the displacement amplifying lever 4. This prevents stress concentration, connection wear or even jamming of the displacement amplifying lever 4 due to the complex motion trajectory (rotation + local translation) of the lever mechanism under earthquake or cyclic load, and improves the smoothness and responsiveness of the displacement amplifying lever 4 during rotation.

[0090] Optionally, the second connecting node 34 is provided with a truss lever connecting hole 311, and the middle part of the displacement amplifying lever 4 is provided with an outrigger truss connecting hole 404 on the side facing the second connecting node 34. The displacement amplifying lever 4 is hinged to the truss lever connecting hole 311 through the outrigger truss connecting hole 404 in conjunction with bolt and nut assembly, pin or other hinged parts.

[0091] Optionally, refer to Figure 3 , Figures 8a to 8c as well as Figure 10a and Figure 10b The upper end of the displacement amplifying lever 4 is provided with an upper damper connection hole 403, which is used to engage with the bolt and nut assembly, pin, or other hinged parts to hinge with the damper lever connection hole 601 at the end of the upper damper 61; the lower end of the displacement amplifying lever 4 is provided with a lower damper connection hole 405, which is used to engage with the bolt and nut assembly, pin, or other hinged parts to hinge with the damper lever connection hole 601 at the end of the lower damper 62. The first cross node 31 is provided with an upper web plate ear plate 308, which is used to engage with the bolt and nut assembly, pin, or other hinged parts to hinge with the web plate ear plate connection hole 602 at the end of the upper damper 61; the second cross node 32 is provided with a lower web plate ear plate 309, which is used to engage with the bolt and nut assembly, pin, or other hinged parts to hinge with the web plate ear plate connection hole 602 at the end of the lower damper 62.

[0092] Reference Figure 3 , Figures 8a to 8c as well as Figure 9a and Figure 9bIn an optional embodiment of this invention, the upper end of the displacement amplifying lever 4 is provided with an upper preload spring ear plate 401, which has a hinge hole for engaging with a bolt and nut assembly, a pin, or other hinged component to hinge with the preload spring lever connection hole 501 at the lower end of the upper preload spring 51; the lower end of the displacement amplifying lever 4 is provided with a lower preload spring ear plate 402, which has a hinge hole for engaging with a bolt and nut assembly, a pin, or other hinged component to hinge with the preload spring lever connection hole at the upper end of the lower preload spring 52. 501 Hinged; Optionally, the second end of the upper chord 301 is provided with an upper chord ear plate 307 extending downward, and the upper chord ear plate 307 is provided with a hinge hole for engaging with a bolt and nut assembly, a pin or other hinge component to hinge with the chord ear plate connection hole 502 provided at the upper end of the upper preload spring 51; the second end of the lower chord 306 is provided with a lower chord ear plate 310 extending upward, and the lower chord ear plate 310 is provided with a hinge hole for engaging with a bolt and nut assembly, a pin or other hinge component to hinge with the chord ear plate connection hole 502 provided at the lower end of the lower preload spring 52.

[0093] Reference Figure 3 and Figure 6 In an optional embodiment of this example, each of the first cross node 31 and the second cross node 32 is provided with an extension 35 on the side facing the frame column 2 to increase the installation area. The upper web plate ear plate 308 and the lower web plate ear plate 309 are fixed to the side of the extension 35 facing the frame column 2, providing a stable installation surface for the upper web plate ear plate 308 and the lower web plate ear plate 309, thereby improving the structural rigidity and reliability.

[0094] Reference Figure 3 as well as Figures 8a to 8c In an optional embodiment of this example, the displacement amplifying lever 4 is provided with a receiving cavity 41 on the side facing the X-shaped cantilever truss 3. This cavity is used to receive the part where the upper end of the second lower web member 305 and the lower end of the first upper web member 302 are connected to the second connecting node 34, the upper end of the upper damper 61, and the upper end of the lower damper 62. This allows the displacement amplifying lever 4 to have enough space to place two sets of dampers and preload springs, while also having sufficient stiffness and strength to serve as a self-balancing frame for the preload spring 5.

[0095] In an optional embodiment of this example, the first connecting node 33 is fixedly connected to the core tube 1 to further ensure the stability and reliability of the structure.

[0096] In an optional embodiment of this example, the damper 6 is a viscous damper. In addition, the damper 6 may also include, but is not limited to, types such as viscoelastic dampers, friction dampers, and metal dampers.

[0097] Finally, it should be noted that the above embodiments and optional implementations in this specification are only used to illustrate the technical solutions of the present invention, and not to limit them. 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 optional implementations, or equivalent substitutions can be made to some or all of the technical features therein. 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. Furthermore, it is emphasized again that, in the absence of conflict, the features of the embodiments and optional implementations in the embodiments in this specification can be combined with each other.

Claims

1. An X-type outrigger truss lever-type negative stiffness energy dissipation outrigger system, comprising: The structure comprises a core tube located at the center of the building structure, frame columns located on the periphery of the building structure, and outrigger truss assemblies connecting the core tube and the frame columns; characterized in that... The outrigger truss assembly includes: An X-shaped outrigger truss includes a rigidly connected upper chord, upper web members, lower web members, and lower chord. The upper and lower chords extend horizontally. The first ends of the upper and lower chords are fixedly connected to the core tube, and the second ends of both the upper and lower chords face the frame column. The upper and lower web members are located between the upper and lower chords, including a first and a second upper web member that cross at a first intersection node. The lower web member is located between the upper web members and the lower chord. Between them, there are a first lower web member and a second lower web member that are cross-connected at the second intersection node; the upper end of the first upper web member is connected to the first end of the upper chord, the upper end of the second upper web member is connected to the second end of the upper chord, the upper end of the first lower web member and the lower end of the second upper web member are connected to the first connection node, the upper end of the second lower web member and the lower end of the first upper web member are connected to the second connection node, the lower end of the first lower web member is connected to the second end of the lower chord, and the lower end of the second lower web member is connected to the first end of the lower chord. A dual damping member, disposed between the X-shaped outrigger truss and the frame column, includes: The displacement amplification lever is hinged to the second connecting node on one side of its middle section and to the frame column on the other side of its middle section. The damper includes an upper damper and a lower damper. The upper damper is located between the first intersection node and the frame column, with one end hinged to the first intersection node and the other end hinged to the upper end of the displacement amplifying lever. The lower damper is located between the second intersection node and the frame column, with one end hinged to the second intersection node and the other end hinged to the lower end of the displacement amplifying lever. The preload spring includes an upper preload spring and a lower preload spring. The upper end of the upper preload spring is hinged to the second end of the upper chord rod, and the lower end is hinged to the upper end of the displacement amplifying lever. The lower end of the lower preload spring is hinged to the second end of the lower chord rod, and the upper end is hinged to the lower end of the displacement amplifying lever. With the hinge point between the upper damper and the upper end of the displacement amplifying lever as the first hinge point, and the hinge point between the lower damper and the lower end of the displacement amplifying lever as the second hinge point, in the initial state, the axis of the upper preload spring, the first hinge point, the second hinge point, and the axis of the upper preload spring are on the same straight line.

2. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The displacement amplifying lever has a column connection hole on the side away from the second connection node in the middle. The frame column has a frame column ear plate on the side facing the second connection node. The frame column ear plate has a hinge elongated hole extending laterally, which is used to engage with the hinge and the column connection hole of the displacement amplifying lever.

3. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The second connection node is provided with a truss lever connection hole, and the middle part of the displacement amplifying lever is provided with an outrigger truss connection hole on the side facing the second connection node. The displacement amplifying lever is hinged to the truss lever connection hole through the outrigger truss connection hole and the hinge member.

4. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The upper end of the displacement amplification lever is provided with an upper damper connection hole, which is used to engage with the hinge and the damper lever connection hole provided at the end of the upper damper; the lower end of the displacement amplification lever is provided with a lower damper connection hole, which is used to engage with the hinge and the damper lever connection hole provided at the end of the lower damper. And / or, the first cross node is provided with an upper web ear plate, which is used to engage with the hinge member and the web ear plate connection hole provided at the end of the upper damper; the second cross node is provided with a lower web ear plate, which is used to engage with the hinge member and the web ear plate connection hole provided at the end of the lower damper.

5. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The upper end of the displacement amplification lever is provided with an upper preload spring ear plate, and the upper preload spring ear plate is provided with a hinge hole for hinged connection with the preload spring lever connection hole provided at the lower end of the upper preload spring; the lower end of the displacement amplification lever is provided with a lower preload spring ear plate, and the lower preload spring ear plate is provided with a hinge hole for hinged connection with the preload spring lever connection hole provided at the upper end of the lower preload spring. And / or, the second end of the upper chord is provided with an upper chord lug plate extending downward, and the upper chord lug plate is provided with a hinge hole for hinged connection with the chord lug plate connection hole provided at the upper end of the upper preload spring; the second end of the lower chord is provided with a lower chord lug plate extending upward, and the lower chord lug plate is provided with a hinge hole for hinged connection with the chord lug plate connection hole provided at the lower end of the lower preload spring.

6. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: Both the first and second intersection nodes have extensions on one side facing the frame column to increase the installation area.

7. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The hinge point between the second intersection node and the displacement amplifying lever is taken as the third hinge point, and the hinge point between the displacement amplifying lever and the frame column is taken as the fourth hinge point. The distance L2 between the first hinge point or the second hinge point and the third hinge point is greater than the distance L1 between the fourth hinge point and the third hinge point.

8. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The displacement amplification lever has a receiving cavity on the side facing the X-shaped cantilever truss, which is used to accommodate the part where the upper end of the second lower web member is connected to the lower end of the first upper web member at the second connection node, the upper end of the upper damper, and the upper end of the lower damper.

9. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The first connecting node is fixedly connected to the core tube.

10. The X-type cantilever truss lever-type negative stiffness energy dissipation cantilever system according to claim 1, characterized in that: The damper is a viscous damper.

Images