A vertical cross - layer tuned inerter damping system with geometric nonlinear gain

Abstract

The present invention relates to a vertical cross - layer tuned inerter damping system with geometric non - linear gain. The system includes a displacement amplification lever mechanism, a ball screw mechanism, a gear - rack mechanism, and a tuned damping mechanism connected in sequence. The displacement amplification lever mechanism and the ball screw mechanism are arranged across floors in the floor structure, and the gear - rack mechanism and the tuned damping mechanism are arranged on the structural floor. The displacement amplification lever mechanism and the tuned damping mechanism are respectively connected to the structure; the rotating lever is hinged to the displacement primary transfer rod and the connecting rod respectively; the connecting rod is hinged to the displacement secondary transfer rod, and the displacement secondary transfer rod extends into the nut; the inertial gear is rigidly connected to the nut, and the translation rod meshes with the inertial gear. Compared with the prior art, the present invention non - linearly transfers and amplifies the vertical deformation during the structural vibration process, thereby driving the inerter and the damper to operate, effectively introducing non - linear inertial mass amplification, damping enhancement, and precise modal tuning control, and significantly improving the control efficiency of the system.

Description

Technical Field

[0001] The present invention belongs to the technical field of civil engineering, and relates to a vertical cross-layer tuned inertial mass damper system with geometric nonlinear gain. Background Art

[0002] In the vibration control of medium / high / ultra-high-rise structures, although the tuned mass damper (TMD) can provide inertial control force and damping control force, due to its narrow control frequency band, it is beneficial for wind-induced vibration control, but its control effect on seismic action is very limited; the traditional method of installing energy dissipators horizontally between floors has excellent effects in low / middle-rise structures dominated by shear deformation, but it is difficult to exert its energy dissipation advantage in middle / high / ultra-high-rise structures dominated by flexural deformation. In order to efficiently control the vibration response of middle / high / ultra-high-rise structures, it is very crucial to utilize the geometric nonlinearity exhibited during their vibration process.

[0003] Most of the existing control methods for middle / high / ultra-high-rise structures utilize the real response of the structure to drive the operation of the shock absorption device, and the utilization efficiency of the shock absorption device is not high; how to amplify the real response of the structure into the response of the driving device by using mechanical and mechanical principles remains to be further explored.

[0004] Patent CN116928276A discloses a nonlinear vibration isolation platform containing a ball screw type inertial mass and an optimization design method for structural parameters. The nonlinear vibration isolation platform includes a base, a double-layer support structure, a spring-damper vibration isolation structure, a ball screw type inertial mass, a moving platform, and a guiding device; among them, the moving platform and the base are installed in a parallel and opposite manner up and down through the guiding device, a double-layer support structure is installed between the base and the moving platform, the spring-damper vibration isolation structure is horizontally installed in the lower frame of the double-layer support structure, and the ball screw type inertial mass is vertically installed in the upper frame of the double-layer support structure. However, the vibration isolation platform described in this patent is only applicable to structures or equipment that use vibration isolation methods to control dynamic responses, and the vibration isolation method has limited damping effects on long-period flexible structures such as middle / high / ultra-high-rise structures. Therefore, this patent is not applicable to the vibration control of middle / high / ultra-high-rise structures; in addition, the device described in this patent is an isolation measure for single vertical linear motion, without the ability of response gain and the ability to control the bending deformation of the controlled structure. Summary of the Invention

[0005] The purpose of the present invention is to provide a vertical cross-layer tuned inertial mass damper system with geometric nonlinear gain in order to overcome at least one defect of the above-mentioned existing technologies. The present invention will nonlinearly transfer and amplify the vertical deformation during the vibration process of the structure, and then drive the inertial mass and damper to operate with the amplified deformation, effectively introducing nonlinear inertial mass enhancement and damping enhancement to improve the control efficiency of the system, and at the same time achieving precise tuning control of multiple modes of the structure.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] One of the technical solutions of the present invention is to provide a vertical cross-layer tuned inerter damping system with geometric nonlinear gain. The system includes a displacement amplification lever mechanism, a ball screw mechanism, a gear rack mechanism, and a tuned damping mechanism connected in sequence. The displacement amplification lever mechanism and the ball screw mechanism are arranged across floors in the floor structure. The gear rack mechanism and the tuned damping mechanism are arranged on the structural floor slab. The displacement amplification lever mechanism and the tuned damping mechanism are respectively connected to the structure;

[0008] The displacement amplification lever mechanism includes a primary displacement transfer rod, a rotating lever, and a connecting rod. The primary displacement transfer rod is arranged across floors in the floor structure. The rotating lever is respectively hinged to the primary displacement transfer rod and the connecting rod. The displacement amplification lever mechanism is used to amplify the vertical deformation generated by geometric nonlinearity during the vibration of the high-rise structure;

[0009] The ball screw mechanism includes a secondary displacement transfer rod and a nut. The connecting rod is hinged to the secondary displacement transfer rod. The secondary displacement transfer rod is arranged across floors in the floor structure. The secondary displacement transfer rod extends into the nut. The ball screw mechanism is used to generate nonlinear inerter force and realize the secondary amplification of vertical displacement to horizontal displacement;

[0010] The gear rack mechanism includes an inertia gear and a translating rod. The inertia gear is rigidly connected to the nut and rotates coaxially. The translating rod meshes with the inertia gear. When the nut rotates, it drives the inertia gear to rotate, thereby driving the translating rod to perform horizontal linear motion.

[0011] Further, one end of the primary displacement transfer rod is fixedly connected to the structural floor slab, and the other end is hinged to the rotating lever. One end of the rotating lever is hinged to the structural floor slab, and the other end is hinged to the connecting rod.

[0012] Further, the displacement amplification lever mechanism is connected to the ball screw mechanism through a driving mechanism. The driving mechanism includes a rotating flywheel and a secondary displacement transfer rod. The center of the rotating flywheel is connected to the hinge point of the secondary displacement transfer rod and the connecting rod. The translational degree of freedom of the rotating flywheel with respect to the secondary displacement transfer rod is constrained, and the rotational degree of freedom is not constrained. All degrees of freedom with respect to the connecting rod are constrained. The rotating flywheel is used to generate nonlinear inertial mass and inerter control force related to vertical deformation.

[0013] Further, a rotating shaft is provided at the center of the rotating flywheel. The rotating shaft is hinged to the hinge point of the secondary displacement transfer rod and fixedly connected to the hinge point of the connecting rod.

[0014] Further, the primary displacement transfer rod and the secondary displacement transfer rod pass through the guiding cylinder. The horizontal degree of freedom of the displacement transfer rod is constrained, while the vertical movement is free. The guiding cylinder is fixedly connected to the structural floor slab. The guiding cylinder is used to ensure that the rigid rod for transmitting the vertical displacement in the displacement amplification lever mechanism and the ball screw mechanism always remains perpendicular during operation.

[0015] Further, one end of the secondary displacement transfer rod that is away from the part extending into the nut has a smooth surface, and the other end that is close to the part extending into the nut has a threaded surface arranged thereon.

[0016] One end of the translation rod that is away from the meshing point with the inertial gear has a smooth surface, and the other end that is close to the meshing point with the inertial gear has teeth arranged thereon.

[0017] Further, the nut passes through the constraint ring. The translational degree of freedom of the nut with respect to the constraint ring is constrained, while the rotational degree of freedom is not constrained. The constraint ring is fixedly connected to the structural floor slab.

[0018] The constraint ring includes a pair of thrust bearings and a rigid outer sleeve. A step is provided on the outer surface of the nut, and this step is constrained in the middle of the thrust bearings. The thrust bearings are used to ensure that the nut does not undergo vertical displacement during operation and can only rotate. The thrust bearings are wrapped by the rigid outer sleeve, and the rigid outer sleeve is used to constrain the horizontal and vertical displacements of the thrust bearings and the nut.

[0019] As a preferred technical solution, the thrust bearings are arranged one above the other, and the rigid outer sleeve is rigidly connected to the structural floor slab.

[0020] Further, a limit block is provided beside the translation rod. This limit block is arranged at the meshing point of the translation rod and the inertial gear. The vertical degree of freedom of the translation rod is constrained, while the horizontal movement is free. The limit block is fixedly connected to the structural floor slab. The limit block is used to ensure that the rigid rod for transmitting the horizontal displacement in the gear - rack mechanism always remains horizontal during operation and does not allow the translation rod to disengage from the inertial gear.

[0021] Further, the tuned damping mechanism includes an energy - dissipating device and a tuned spring. The energy - dissipating device is connected in parallel with the tuned spring. One end of the energy - dissipating device and the tuned spring is fixedly connected to the structural side wall, and the other end is fixedly connected to the translation rod. The energy - dissipating device is used to add an enhanced damping based on the non - linear amplification of the vertical deformation and dissipate the vertical modal vibration energy of medium / high / ultra - high - rise structures. The tuned spring works in cooperation with the energy - dissipating device to achieve precise control of the vertical deformation mode of the structure based on the tuning effect of the tuned spring.

[0022] Further, the energy - dissipating device includes a viscoelastic damper or a metal shear plate.

[0023] As a preferred technical solution, the system is installed at the top or intermediate floor of the structure.

[0024] As a preferred technical solution, the number of installations of the system along the height of the structure is arranged as required.

[0025] As a preferred technical solution, the number of floors across which the system spans is 3 - 5 floors.

[0026] As a preferred technical solution, the restraint ring, nut, inertial gear, translation rod, energy dissipation device, limit block, and tuning spring are arranged on the floors above the rotating lever.

[0027] One of the technical solutions of the present invention is to provide a method for using the vertical cross - floor tuned inertial mass damper system with geometric non - linear gain, and this method includes the following steps:

[0028] When the system is working, the structure deforms, and the displacement primary transfer rod generates a vertical displacement, driving the rotating lever to rotate. Using the lever principle, the vertical displacement generated by the displacement primary transfer rod is amplified into the vertical displacement of the displacement secondary transfer rod. The amplification efficiency of the vertical displacement depends on the length of the rotating lever and the position of the displacement primary transfer rod relative to the rotating lever;

[0029] The movement directions of the displacement primary transfer rod and the displacement secondary transfer rod are ensured to be perpendicular through the guide cylinder;

[0030] At this time, the rotation of the connecting rod relative to the displacement secondary transfer rod can drive the rotating flywheel to rotate, generating a non - linear inertial mass force;

[0031] The downward movement of the displacement secondary transfer rod will be converted into the rotational movement of the nut and the inertial gear through the ball screw mechanism;

[0032] The translational freedom between the nut and the inertial gear and the structure is constrained by the restraint ring;

[0033] At this time, the rotational movement of the nut and the inertial gear will generate a non - linear inertial mass force, and at the same time, the vertical displacement of the displacement secondary transfer rod will be turned and amplified into the horizontal movement of the translation rod. The direction of the horizontal movement is determined by the thread direction at the end of the displacement secondary transfer rod close to the nut, and the amplification efficiency is determined by the thread pitch at the end of the displacement secondary transfer rod close to the nut and the radius of the inertial gear;

[0034] The horizontal movement of the translation rod will drive the energy dissipation device and the tuning spring, generating a damping effect to help dissipate energy, and at the same time achieving a tuning effect through the tuning spring;

[0035] The movement direction of the translational rod relative to the combination of the energy dissipation device and the tuning spring is restricted by the inertial gear and the limit block, so as to ensure that the movement direction of the translational rod is in a straight line with the movement direction of the combination of the energy dissipation device and the tuning spring.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] (1) The present invention can specifically solve the problem that it is difficult to control and utilize geometric nonlinear deformation in the seismic (vibration) control of medium / high / ultra-high-rise structures mainly in the bending or flexural-shear deformation mode. The vertical deformation during the vibration of medium / high / ultra-high-rise structures is nonlinearly transmitted and amplified through the displacement transfer link-amplifying lever nonlinear mechanism, and then drives the operation of the inertial capacitors and dampers at the internal nodes of the nonlinear mechanism. At the same time, arranging the present invention across floors can accurately utilize the vertical deformation modes of bending deformation and flexural-shear deformation structures and their geometric nonlinear gain (amplification of vertical deformation), effectively introduce nonlinear inertial mass amplification, damping enhancement, and precise modal tuning control for the bending mode, and significantly improve the control efficiency of the system.

[0038] (2) The present invention can utilize the nonlinear transmission principle of the displacement amplification lever mechanism during operation to drive the rotating flywheel in the mechanism to generate nonlinear inertance behavior; at the same time, drive the displacement secondary transfer rigid rod in the mechanism to generate nonlinear vertical displacement, and then drive the ball screw mechanism to generate nonlinear inertance behavior, providing nonlinear inertial force for the vibration control of the structure. At the same time, the multi-stage tuning effect generated by the multi-stage nonlinear inertance behavior in the system is beneficial to realizing the precise tuning of multiple modes of medium / high / ultra-high-rise structures.

[0039] (3) Through the mechanical transmission principle of the ball screw mechanism, the present invention can amplify the nonlinear vertical displacement of the displacement secondary transfer rigid rod transmitted to the nut by a factor of two and convert it into the nonlinear horizontal displacement of the energy dissipation device and the tuning spring. The present invention can amplify the vertical deformation of medium / high / ultra-high-rise structures, thereby enhancing the control performance of the energy dissipation and tuning devices in the system, facilitating the realization of synergistic tuning-damping with enhanced efficiency. In addition to precisely controlling the vertical deformation mode of the structure using the tuning spring, it can also drive the energy dissipation device to operate to dissipate seismic energy, and this amplification effect can significantly improve the energy dissipation efficiency of the device.

[0040] (4) In the present invention, the displacement amplification lever mechanism and the ball screw mechanism are used as key connecting mechanisms to enhance the geometric nonlinearity of the structure and promote the efficient collaborative work of the nonlinear inertance sub-units, energy dissipation sub-units, and tuning sub-units in the system. Description of the Drawings

[0041] Figure 1This is the front view structural schematic diagram of the vertical cross - layer tuned inertial - capacitance damping system with geometric non - linear gain in the embodiments of the present invention;

[0042] Figure 2 This is the partial top - view structural schematic diagram of the vertical cross - layer tuned inertial - capacitance damping system with geometric non - linear gain in the embodiments of the present invention.

[0043] Description of the markings in the figure:

[0044] 1—Displacement primary transfer rod, 2—Rotating lever, 3—Connecting rod, 4—Rotating flywheel, 5—Displacement secondary transfer rod, 6—Guide cylinder, 7—Constraint ring, 8—Nut, 9—Inertial gear, 10—Translational rod, 11—Energy - dissipating device, 12—Limit block, 13—Tuning spring. Detailed implementation manners

[0045] The present invention will be described in detail below with reference to specific embodiments. These embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation procedures are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are used to describe common objects, and only represent different instances referring to the same object, rather than implying that the objects described in this way must be in a given order, whether in time, space, sorting or any other way.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] Embodiment:

[0049] A vertical cross - layer tuned inertial - capacitance damping system with geometric non - linear gain, as Figure 1 and Figure 2As shown, it includes a displacement amplification lever mechanism, a ball screw mechanism, a gear rack mechanism, and a tuned damping mechanism connected in sequence. The displacement amplification lever mechanism and the ball screw mechanism are arranged across floors in the floor structure. The gear rack mechanism and the tuned damping mechanism are arranged on the structural floor. The displacement amplification lever mechanism and the tuned damping mechanism are respectively connected to the structure;

[0050] The displacement amplification lever mechanism includes a primary displacement transfer rod 1, a rotating lever 2, and a connecting rod 3. The primary displacement transfer rod 1 is arranged across floors in the floor structure. The rotating lever 2 is hinged to the primary displacement transfer rod 1 and the connecting rod 3 respectively. The displacement amplification lever mechanism is used to amplify the vertical deformation generated by geometric nonlinearity in the high-rise structure during vibration;

[0051] The upper end of the primary displacement transfer rod 1 is fixedly connected to the structural floor, and the lower end is hinged to the rotating lever 2. One end of the rotating lever 2 is hinged to the structural floor, and the other end is hinged to the connecting rod 3. The connecting rod 3 is hinged to the secondary displacement transfer rod 5;

[0052] The displacement amplification lever mechanism is connected to the ball screw mechanism through a driving mechanism. The driving mechanism includes a rotating flywheel 4 and a secondary displacement transfer rod 5. The center of the rotating flywheel 4 is connected to the hinge point of the secondary displacement transfer rod 5 and the connecting rod 3. The translational degree of freedom of the rotating flywheel 4 with respect to the secondary displacement transfer rod 5 is constrained, and the rotational degree of freedom is not constrained. All degrees of freedom with respect to the connecting rod 3 are constrained. The rotating flywheel 4 is used to generate nonlinear inertial mass and inertance control force related to vertical deformation;

[0053] A rotating shaft is arranged at the center of the rotating flywheel 4. The rotating shaft is hinged to the hinge point of the lower end (the connection end with the connecting rod 3) of the secondary displacement transfer rod 5 and fixedly connected to the hinge point of the upper end (the connection end with the secondary displacement transfer rod 5) of the connecting rod 3;

[0054] The primary displacement transfer rod 1 and the secondary displacement transfer rod 5 pass through the guiding cylinder 6. The horizontal degree of freedom of the displacement transfer rod is constrained, and the vertical movement is free. The guiding cylinder 6 is fixedly connected to the structural floor. The guiding cylinder 6 is used to ensure that the rigid rod for transmitting vertical displacement in the displacement amplification lever mechanism and the ball screw mechanism always remains perpendicular during operation;

[0055] The ball screw mechanism includes a secondary displacement transfer rod 5 and a nut 8. The secondary displacement transfer rod 5 is arranged across floors in the floor structure. The secondary displacement transfer rod 5 extends into the nut 8. The ball screw mechanism is used to generate nonlinear inertance force and realize the secondary amplification of vertical displacement to horizontal displacement;

[0056] The surface of the part of the lower end of the secondary displacement transfer rod 5 away from the part extending into the nut 8 is smooth, and the surface of the part of the upper end close to the part extending into the nut 8 is provided with threads;

[0057] The nut 8 passes through the restraint ring 7. The translational degree of freedom of the nut 8 with respect to the restraint ring 7 is constrained, and the rotational degree of freedom is not constrained. The restraint ring 7 is fixedly connected to the structural floor slab.

[0058] The restraint ring 7 includes a pair of thrust bearings arranged vertically and a rigid outer sleeve. A metal step is provided on the outer surface of the nut 8, and the metal step is constrained in the middle of the thrust bearings arranged vertically. The thrust bearings are used to ensure that the nut 8 does not undergo vertical displacement during operation and can only rotate. The thrust bearings arranged vertically are wrapped by the rigid outer sleeve, and the rigid outer sleeve is rigidly connected to the structural floor slab, which is used to constrain the horizontal displacement and vertical displacement of the thrust bearings and the nut 8.

[0059] The gear-rack mechanism includes an inertia gear 9 and a translation rod 10. The inertia gear 9 is rigidly connected to the nut 8 and rotates coaxially. The translation rod 10 meshes with the inertia gear 9. When the nut 8 rotates, it drives the inertia gear 9 to rotate, thereby driving the translation rod 10 to perform a horizontal linear motion.

[0060] A part of the surface of one end of the translation rod 10 away from the meshing point with the inertia gear 9 is smooth, and teeth are arranged on a part of the surface of the other end close to the meshing point with the inertia gear 9.

[0061] A limit block 12 is arranged beside the translation rod 10. The limit block 12 is arranged at the meshing point of the translation rod 10 and the inertia gear 9. The vertical degree of freedom of the translation rod 10 is constrained, and it can move freely horizontally. The limit block 12 is fixedly connected to the structural floor slab. The limit block 12 is used to ensure that the rigid rod for transmitting horizontal displacement in the gear-rack mechanism always remains horizontal during operation and does not allow the translation rod 10 to disengage from the inertia gear 9.

[0062] The tuned damping mechanism includes an energy dissipation device 11 and a tuned spring 13. The energy dissipation device 11 is connected in parallel with the tuned spring 13. One end of the energy dissipation device 11 and the tuned spring 13 is fixedly connected to the structural side wall, and the other end is fixedly connected to the translation rod 10. The energy dissipation device 11 is used to add an enhanced damping based on the nonlinear amplification of vertical deformation and dissipate the vertical modal vibration energy of medium / high / ultra-high-rise structures. The tuned spring 13 works in cooperation with the energy dissipation device 11 to achieve precise control of the vertical deformation mode of the structure based on the tuning effect of the tuned spring 13.

[0063] The energy dissipation device 11 can use a viscoelastic damper or a metal shear plate, and is preferably a viscoelastic damper in this embodiment.

[0064] It should be noted that the system layout of the present invention is not limited to the form in the figure, and its installation position can be on the top floor of the structure (as in this embodiment, the upper end of the displacement primary transfer rod 1 is fixedly connected to the structure roof slab, the restraint ring 7 is fixedly connected to the structure roof slab, the inertial gear 9, the translation rod 10, the energy dissipation device 11 and the tuning spring 13 are installed above the structure roof slab, and the limit block 12 is fixedly connected to the structure roof slab), or it can also be installed on the middle floor of the structure; the installation quantity along the height of the structure is not limited to 1 in this embodiment; the number of floors across which a control system spans is not limited to 3 in this embodiment; all system components at the upper end of the displacement secondary transfer rod 5, including the restraint ring 7, the nut 8, the inertial gear 9, the translation rod 10, the energy dissipation device 11, the limit block 12 and the tuning spring 13, are not limited to extending to the top floor at the upper end of the displacement primary transfer rod 1, and only need to extend to the floor above the upper part of the rotating lever 2.

[0065] The usage method of the above vertical cross-floor tuned inertial mass damper system with geometric nonlinear gain is as follows:

[0066] When the system is working, the medium / high / ultra-high-rise structure generates flexural / shear-flexural deformation, and the displacement primary transfer rod 1 generates a downward vertical displacement, driving the rotation of the rotating lever 2. Using the lever principle, the downward vertical displacement generated by the displacement primary transfer rod 1 is amplified into the downward vertical displacement of the displacement secondary transfer rod 5. The amplification efficiency of the vertical displacement depends on the length of the rotating lever 2 and the position of the displacement primary transfer rod 1 relative to the rotating lever 2;

[0067] The movement directions of the displacement primary transfer rod 1 and the displacement secondary transfer rod 5 are ensured to be perpendicular through the guide cylinder 6;

[0068] At this time, the rotation of the connecting rod 3 relative to the displacement secondary transfer rod 5 can drive the rotation of the rotating flywheel 4 to generate a nonlinear inertial mass force;

[0069] The downward movement of the displacement secondary transfer rod 5 will be converted into the rotational movement of the nut 8 and the inertial gear 9 through the ball screw mechanism;

[0070] The translational degrees of freedom between the nut 8 and the inertial gear 9 and the structure are constrained by the restraint ring 7;

[0071] At this time, the rotational movement of the nut 8 and the inertial gear 9 will generate a nonlinear inertial mass force, and at the same time, the downward vertical displacement of the displacement secondary transfer rod 5 will be turned and amplified into the horizontal movement of the translation rod 10. The horizontal movement direction is determined by the thread direction at the end of the displacement secondary transfer rod 5 close to the nut 8, and the amplification efficiency is determined by the thread pitch at the end of the displacement secondary transfer rod 5 close to the nut 8 and the radius of the inertial gear 9;

[0072] The horizontal movement of the translation rod 10 will drive the energy dissipation device 11 and the tuning spring 13, generating a damping effect to help dissipate energy, and at the same time achieving a tuning effect through the tuning spring 13;

[0073] The movement direction of the translation rod 10 relative to the combination of the energy dissipation device 11 and the tuning spring 13 is restricted by the inertial gear 9 and the limit block 12 to ensure that the movement direction of the translation rod 10 is in a straight line with the movement direction of the combination of the energy dissipation device 11 and the tuning spring 13.

[0074] The present invention is applicable to medium / high / ultra-high-rise structures (such as the tube-in-tube structure commonly used in high / ultra-high-rise buildings) with a bending or flexural-shear deformation mode and a large space in the center of the structure. When such a structure is subjected to external excitation, the present invention can utilize its significant geometric nonlinearity to drive the inertance sub-unit and the energy dissipation sub-unit in the system with the vertical deformation of the structure, and further enhance the generation of inertance behavior and damping energy dissipation behavior based on the displacement amplification lever mechanism, realizing the high-performance control of medium / high / ultra-high-rise structures.

[0075] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the invention. Obviously, those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present invention as disclosed should be within the protection scope of the present invention.

Claims

1. A vertical cross-layer tuned inertia damping system with geometric nonlinear gain, characterized in that: The system comprises a displacement amplification lever mechanism, a ball screw mechanism, a gear rack mechanism and a tuning damping mechanism which are connected in sequence, wherein the displacement amplification lever mechanism and the ball screw mechanism are arranged across floors in the floor structure, the gear rack mechanism and the tuning damping mechanism are arranged on the structural floor, and the displacement amplification lever mechanism and the tuning damping mechanism are connected to the structure respectively; The displacement amplifying lever mechanism comprises a displacement primary transmission rod (1), a rotating lever (2) and a connecting rod (3); the displacement primary transmission rod (1) is arranged across floors in a floor structure, and the rotating lever (2) is hinged to the displacement primary transmission rod (1) and the connecting rod (3) respectively; The ball screw mechanism comprises a displacement secondary transmission rod (5) and a nut (8), the connecting rod (3) is hinged to the displacement secondary transmission rod (5), the displacement secondary transmission rod (5) is arranged across floors in the floor structure, and the displacement secondary transmission rod (5) extends into the nut (8); The rack and pinion mechanism comprises an inertia gear (9) and a translation rod (10), the inertia gear (9) and the nut (8) are rigidly connected and coaxially rotated, and the translation rod (10) is meshed with the inertia gear (9); The displacement amplifying lever mechanism is connected to the ball screw mechanism via a driving mechanism, the driving mechanism comprising a rotating flywheel (4) and a displacement secondary transmission rod (5), the center of the rotating flywheel (4) being connected to a hinge point between the displacement secondary transmission rod (5) and the connecting rod (3), the translational degree of freedom of the rotating flywheel (4) being constrained relative to the displacement secondary transmission rod (5), the rotational degree of freedom being unconstrained, and all degrees of freedom relative to the connecting rod (3) being constrained; The primary displacement transmission rod (1) and the secondary displacement transmission rod (5) pass through the guide cylinder (6); the horizontal freedom of the displacement transmission rod is constrained and the vertical freedom is free to move; and the guide cylinder (6) is fixedly connected to the structural floor slab; The tuning damping mechanism comprises an energy dissipation device (11) and a tuning spring (13); the energy dissipation device (11) and the tuning spring (13) are connected in parallel; one end of the energy dissipation device (11) and the tuning spring (13) are fixedly connected to the side wall of the structure, and the other end is fixedly connected to the translation rod (10).

2. The vertical cross-layer tuned inertia damping system with geometric nonlinear gain according to claim 1 is characterized in that: One end of the displacement primary transmission rod (1) is fixedly connected to the structural floor slab, and the other end is hinged to the rotating lever (2); one end of the rotating lever (2) is hinged to the structural floor slab, and the other end is hinged to the connecting rod (3).

3. The vertical cross-layer tuned inertia damping system with geometric nonlinear gain according to claim 1 is characterized in that: A rotating shaft is provided at the center of the rotating flywheel (4), the rotating shaft is hinged to the hinge point of the displacement secondary transmission rod (5), and is fixedly connected to the hinge point of the connecting rod (3).

4. The vertical cross-layer tuned inertia damping system with geometric nonlinear gain according to claim 1 is characterized in that: The surface of one end of the displacement secondary transmission rod (5) away from the portion extending into the nut (8) is smooth, and the surface of the other end of the displacement secondary transmission rod (5) close to the portion extending into the nut (8) is provided with threads; The surface of one end of the translation rod (10) away from the meshing point with the inertia gear (9) is smooth, and the surface of the other end of the translation rod (10) close to the meshing point with the inertia gear (9) is provided with teeth.

5. The vertical cross-layer tuned inertia damping system with geometric nonlinear gain according to claim 1 is characterized in that: The nut (8) passes through the constraint ring (7), the nut (8) is constrained in translational freedom relative to the constraint ring (7) but is not constrained in rotational freedom, and the constraint ring (7) is fixedly connected to the structural floor slab; The restraining ring (7) comprises a pair of thrust bearings and a rigid outer sleeve. The outer surface of the nut (8) is provided with a step which is restrained in the middle of the thrust bearing. The thrust bearing is wrapped by the rigid outer sleeve.

6. The vertical cross-layer tuned inertia damping system with geometric nonlinear gain according to claim 1 is characterized in that: A limit block (12) is provided next to the translation rod (10), and the limit block (12) is arranged at the meshing point between the translation rod (10) and the inertia gear (9). The vertical degree of freedom of the translation rod (10) is constrained, and the horizontal degree of freedom of movement is free. The limit block (12) is fixedly connected to the structural floor slab.

7. The vertical cross-layer tuned inertia damping system with geometric nonlinear gain according to claim 1 is characterized in that: The energy dissipation device (11) comprises a viscoelastic damper or a metal shear plate.

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