A bidirectional passive tuned mass damper and tuning method

Abstract

The present invention relates to the technical field of building structure vibration control, and in particular to a bidirectional passive tuned mass damper and tuning method. The device comprises: a chassis, a mass sphere, a support, a restraint device, a connection device, and a force transmission assembly. The mass sphere is rollably placed on the chassis. The restraint device is a hemispherical frame structure horizontally mounted on the upper portion of the mass sphere. The supports are disposed relative to each other along a first direction and a second direction, with the first direction being perpendicular to the second direction. A force transmission assembly is disposed on each support. The connection device is a retractable structure that connects the restraint device and the force transmission assembly to attenuate the displacement of the mass sphere caused by building structure vibration. By placing a single mass sphere on a chassis with a groove, replacing the existing pendulum-type TMD device that suspends a single sphere, vertical building space is conserved and space utilization is improved. Furthermore, the "detuning" of traditional rolling TMD devices can be significantly improved, achieving a bidirectional vibration reduction effect.

Description

Technical Field

[0001] The present invention relates to the technical field of building structure vibration control, and in particular to a bidirectional passive tuned mass damper and a tuning method. Background Art

[0002] Currently, passive tuned mass dampers (TMDs) are a primary method for controlling wind-induced vibrations in high-rise buildings. TMDs offer the advantages of a simple structure and the absence of external energy input. They have been used in projects such as Taipei 101 and the Shanghai Tower in Taiwan, and their effectiveness has been demonstrated in harsh environments such as typhoons.

[0003] Existing TMDs are primarily pendulum-type devices. These devices utilize a mass suspended from a rope, and their natural vibration period is positively correlated with the rope length. However, the natural vibration frequencies of high-rise buildings often have low first-order frequencies and long periods. This results in a traditional pendulum TMD requiring a long pendulum length, often occupying a significant amount of vertical space within the building, impacting building utilization. Rolling TMDs offer advantages in terms of space conservation, construction, and installation. When the natural vibration period of the TMD device is close to that of the building structure, they can achieve effective vibration reduction. However, existing rolling TMDs typically utilize multiple, dispersed, small spheres with diameters under 0.2 m. There are no large, centralized TMDs with diameters exceeding 1 m and weighing hundreds of tons. Furthermore, the total mass of these small spheres is too low when deployed centrally, making them difficult to meet the requirements for controlling wind-induced vibrations in high-rise buildings.

[0004] Due to adjustments in the functional use of certain spaces and aging of structural components throughout a building's lifecycle, the natural vibration period of a building structure changes with actual usage. The natural vibration period of existing rolling TMD devices, determined by the orbital radius and the sphere radius, is fixed, making it difficult to match the changing natural vibration period of a building structure. This can easily lead to "detuning" of the TMD device, meaning that the natural vibration period of the TMD device differs significantly from that of the building structure, compromising the vibration reduction effect.

[0005] In addition, for conventional building structures, the first two modes of the structure are usually translational motions, and the translation directions are usually perpendicular to each other. The period of the first-order mode is longer than that of the second-order mode, which means that the cross-sectional stiffness of the building is small when bending in the first-order mode, so the axis that bends and deforms around this axis is called the weak axis; correspondingly, the cross-sectional stiffness is large when bending in the second-order mode, so the axis that bends and deforms around this axis is called the strong axis. Currently, most existing TMD devices are designed for vibration reduction of the first-order mode of building structures, that is, they adopt one-way vibration reduction control for the deformation mode of the structure bending and deforming around the weak axis, and the vibration reduction performance of a single mass sphere achieving two-way control within a corresponding single concave surface has not been fully explored.

[0006] Therefore, there is an urgent need for a bidirectional passive tuned mass damper that can significantly improve the "detuning" of the traditional rolling TMD device and achieve a bidirectional vibration reduction effect. At the same time, compared with the pendulum TMD, it can reduce the vertical space occupied by the building and can well meet the vibration reduction needs of high-rise buildings. Summary of the Invention

[0007] (1) Technical issues to be resolved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a bidirectional passive tuned mass damper and a tuning method, which solve the technical problems that the existing TMD device is prone to "detuning", occupies a large vertical space of the building, and is difficult to achieve a bidirectional vibration reduction effect.

[0009] (2) Technical solution

[0010] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0011] A bidirectional passive tuned mass damper comprises: a chassis, a mass sphere, a support, a restraining device, a connecting device and a force transmission component;

[0012] The mass sphere can be placed on the chassis in a rolling manner;

[0013] The restraint device is a hemispherical frame structure, which is horizontally sleeved on the upper part of the mass sphere;

[0014] The supports are respectively arranged relative to the outer edge of the chassis along a first direction and a second direction, wherein the first direction is perpendicular to the second direction;

[0015] A force transmission component is provided on each of the supports. The connecting device is a telescopic structure. The connecting device connects the restraint device and the force transmission component to attenuate the displacement of the mass sphere caused by the vibration of the building structure.

[0016] The support comprises a pair of fixing seats fixed on the building structure, and a sliding rod fixedly connected between the fixing seats, and the connecting device is slidably connected to the sliding rod.

[0017] The force transmission assembly includes an elastic member and a sliding device for connecting the elastic member to the sliding rod, and the elastic member and the sliding device are detachably connected.

[0018] The sliding device includes a pair of sliding connection seats and a connecting rod passing through the sliding connection seats. The sliding connection seats are slidably connected to the sliding rod, and the connecting rod is fixedly connected to the sliding connection seats with bolts.

[0019] The end portion of the connecting device connected to the sliding rod is located between the two sliding connecting seats, and the connecting device can push the sliding connecting seat to slide along the sliding rod.

[0020] It also includes a pair of limiting bases, the bottom of which is fixedly connected to the building structure;

[0021] The limiting base has a through slot that can pass through the sliding connection seat, the through slot is located below the sliding rod, and the communication direction of the through slot is consistent with the extension direction of the sliding rod.

[0022] The elastic member is sleeved on the connecting rod, and limit plates are provided at both ends of the elastic member, and the limit plates abut against the sliding connection seat;

[0023] The width of the limiting plate is greater than the through slot of the limiting base, so that a limiting area for the elastic member is formed between the two limiting plates.

[0024] It also includes a damping member, one end of which is connected to the inner side wall of the fixing seat, and the other end of which is connected to the sliding connection seat. The telescopic direction of the damping member is the same as the sliding direction of the sliding connection seat.

[0025] A tuning method for a bidirectional passive tuned mass damper is applied to the bidirectional passive tuned mass damper and comprises the following steps:

[0026] Step 1: Confirm the two translation periods of the building structure;

[0027] Step 2: Calculate the first direction of the bidirectional passive tuned mass damper T 1 and second direction T The natural oscillation period of 2 is calculated as follows: in, T 1 is the natural oscillation period in the first direction, T 2 is the natural oscillation period in the second direction, mis the total mass of the mass sphere, g is the acceleration due to gravity, R is the track curvature radius, r is the mass sphere radius, k 1 is the elastic recovery stiffness of the elastic member in the first direction, k 2 is the elastic recovery stiffness of the elastic member in the second direction;

[0028] Step 3: Based on the calculation results of step 2, determine whether the natural vibration period of the bidirectional passive tuned mass damper matches the translation period of the building structure. If they match, the tuning is completed.

[0029] If it does not match, adjust R 、 r 、 k 1. k 2, and repeat step 2 until the natural vibration period of the bidirectional passive tuned mass damper matches the two translation periods of the building structure.

[0030] Step 4: Adjust according to step 3 R 、 r 、 k 1. k 2, the mass sphere and elastic member of the bidirectional passive tuned mass damper are replaced to match the parameters, and the tuning is completed.

[0031] (3) Beneficial effects

[0032] The present invention provides a bidirectional passive tuned mass damper (TMD) that places a single mass sphere on a recessed chassis, replacing the existing pendulum-type TMD device that requires a single suspended sphere. This design saves vertical building space and improves space utilization. Furthermore, it significantly reduces the detuning experienced by conventional rolling TMD devices, achieving bidirectional vibration reduction.

[0033] By setting up a restraining device to constrain the mass ball, the movement of the mass ball can be constrained. As the mass ball rolls and pushes the restraining device, the connecting device eliminates the vertical displacement of the mass ball, so that the horizontal displacement of the slider is consistent with the horizontal displacement of the mass ball.

[0034] By setting up a bidirectional support as a force transmission structure, the displacement generated by the mass sphere can be transmitted to the force transmission component on the support, and then the damping force provided by the force transmission component is transmitted to the building structure.

[0035] By providing a sliding connection as a force transmission carrier, the mass ball is subjected to the forces of the spring and damping element during rolling. By installing a detachable connecting rod in the second through-hole at the bottom of the sliding connection, the bidirectional passive tuned mass damper can be tuned by replacing the elastic element to adjust the spring stiffness according to the use of the building structure. This achieves bidirectional tuning of the passive tuned mass damper, resulting in a more prominent and stable vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a perspective view of a bidirectional passive tuned mass damper according to the present invention;

[0037] Figure 2 A perspective view of the support of the present invention;

[0038] Figure 3 is a perspective view of the chassis of the present invention;

[0039] Figure 4 It is a partial three-dimensional diagram of the elastic member and the sliding connection seat of the present invention;

[0040] Figure 5 A three-dimensional diagram of the elastic member and the sliding connection seat of the present invention;

[0041] Figure 6 A perspective view of the sliding connection seat of the present invention;

[0042] Figure 7 is a perspective view of the damping member of the present invention;

[0043] Figure 8 is a perspective view of the connecting device of the present invention;

[0044] Figure 9 is a perspective view of the restraint device of the present invention;

[0045] Figure 10 A perspective view of the support, force transmission assembly and connecting device of the present invention;

[0046] Figure 11 A perspective view of the chassis, mass sphere, and restraint device of the present invention;

[0047] Figure 12 The comparison of the controlled and uncontrolled acceleration time history curves of the top floor of a 70-story shear wall structure under 50-year return period fluctuating wind load;

[0048] Figure 13 Comparison of top-floor acceleration time history curves of a 70-story shear wall structure controlled by a bidirectional passive tuned mass damper and a traditional pendulum TMD under 50-year return period fluctuating wind loads.

[0049] [Description of Reference Numerals]

[0050] 1: mass sphere;

[0051] 2: support; 21: slide bar; 22: fixed seat;

[0052] 3: chassis; 31: groove; 32: limiting side plate;

[0053] 4: elastic member; 41: connecting rod; 42: limiting plate; 421: third through hole;

[0054] 5: damping element; 51: cylinder; 52: piston; 53: hinged seat;

[0055] 6: Sliding connection seat; 61: First through hole; 62: Second through hole;

[0056] 7: Connecting device; 71: Connecting tube; 72: Telescopic rod;

[0057] 8: restraint device; 81: ring frame; 82: arc frame;

[0058] 9: Limit base. DETAILED DESCRIPTION

[0059] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0060] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0061] See attached Figure 1 As shown, the present invention provides a bidirectional passive tuned mass damper, comprising: a chassis 3, a mass sphere 1, a support 2, a constraint device 8, a connecting device 7 and a force transmission assembly. The mass sphere 1 is arranged to roll in a groove 31 at the top of the chassis 3, and the support 2 is arranged relative to the outer edge of the chassis 3 along a first direction and a second direction, respectively, and the first direction is perpendicular to the second direction. The bottom of the chassis 3 and the support 2 is fixedly connected to the building structure. The constraint device 8 is horizontally sleeved on the upper part of the mass sphere 1 to cause horizontal displacement when the mass sphere 1 rolls. A force transmission assembly is provided on each support 2, and the connecting device 7 connects the constraint device 8 and the force transmission assembly. The mass sphere 1 drives the constraint device 8 to cause horizontal displacement, and the force transmission assembly attenuates the movement of the mass sphere 1 along the first direction and / or the second direction through the connecting device 7.

[0062] The mass sphere 1 is a mass sphere having a spherical appearance after assembly.

[0063] See attached Figure 9 , Attachment Figure 11 As shown, the restraint device 8 has a hemispherical frame structure, comprising an annular frame 81 disposed around the middle of the mass sphere 1 and an arcuate frame 82 disposed around the upper half of the mass sphere 1. The annular frame 81 is sleeved horizontally at the center of the mass sphere 1, while the arcuate frame 82 is fixed perpendicularly to the top of the annular frame 81. The combination of the annular frame 81 and the arcuate frame 82 constrains the mass sphere 1 within the restraint device 8 from the top, preventing it from dislodging from the annular frame 81 while driving the restraint device 8 horizontally, thus preventing damper failure.

[0064] See attached Figure 3 As shown, a limiting side plate 32 is provided on the circumferential edge of the chassis 3 , and the limiting side plate 32 is used to limit the movement range of the mass sphere 1 to prevent the mass sphere 1 from separating from the chassis 3 .

[0065] See attached Figure 2 As shown, the support 2 includes a slide rod 21 and fixed seats 22 at both ends of the slide rod 21. The bottom of the fixed seat 22 is fixedly connected to the building structure, and the connecting device 7 is slidably connected to the slide rod 21.

[0066] See attached Figure 8 As shown, the connecting device 7 includes a connecting tube 71 and a telescopic rod 72. The telescopic rod 72 is telescopically arranged in the connecting tube 71. The connecting end of the connecting tube 71 is hinged to the slide rod 21, and the telescopic end of the telescopic rod 72 is hinged to the annular frame 81. When the building structure generates wind-induced vibration, the mass sphere 1 is displaced in a certain direction along with the vibration, and at the same time drives the constraint device 8 to generate horizontal displacement. The constraint device 8 drives the connecting device 7 to slide along the slide rod 21. Since the connecting device 7 adopts a telescopic structure, when the mass sphere 1 moves, the constraint device 8 is always in a translational state and does not rotate around any axis, so that the vertical displacement of the mass sphere 1 is eliminated. When the mass sphere 1 rolls, the constraint device undergoes the same displacement as the center of the sphere, so that the horizontal displacement of the slider 6 is consistent with the horizontal displacement of the mass sphere 1.

[0067] See attached Figure 4-6 As shown, the force transmission assembly includes an elastic member 4, a sliding device and a damping member 5. The sliding device is used to connect the elastic member 4 and the slide rod 21. The elastic member 4 and the sliding device are detachably connected.

[0068] The sliding device includes a pair of sliding connection seats 6 and a connecting rod 41 passing through the sliding connection seats 6. The sliding connection seats 6 are slidably connected to the sliding rod 21, and the connecting rod 41 is detachably fixed to the sliding connection seats 6.

[0069] The sliding connection base 6 is provided with a first through hole 61 and a second through hole 62. The slide rod 21 passes through the first through hole 61, allowing the sliding connection base 6 to slide along the slide rod 21. The second through hole 62 is located below the first through hole 61. The end of the connecting rod 41 passes through the second through hole 62 and is fixedly connected to the sliding connection base 6 by a bolt.

[0070] The connecting tube 71 is located between the two sliding connecting seats 6. When the mass sphere 1 drives the constraint device 8 to produce horizontal displacement, the constraint device 8 drives the connecting device 7 to displace, and the connecting device 7 simultaneously pushes the sliding connecting seat 6 to slide along the slide rod 21.

[0071] It also includes a pair of limiting bases 9, the bottom of which is fixed on the building structure. The limiting base 9 has a bottom plate and two side plates. The side plates are perpendicular to the bottom plate and fixedly connected to the bottom plate. A through groove is formed between the two side plates, which can pass through the sliding connection seat 6, and the through groove is located below the slide rod 21.

[0072] See attached Figure 10 As shown, the elastic member 4 is sleeved onto the connecting rod 41. A stop plate 42 is provided at each end of the elastic member 4. A third through-hole 421 is provided in the middle of the stop plate 42 for passing the connecting rod 41. The stop plates 42 at each end of the elastic member 4 abut against the sliding connection seats 6 at each end of the connecting rod 41. The stop plates 42 are wider than the through-slots of the stop bases 9, so that the elastic member 4 is restrained between the two stop bases 9 by the stop plates 42 at both ends. The total length of the elastic member 4 with the stop plates 42 is the same as the spacing between the two stop plates 42, forming a restraining area for the elastic member 4 between the two stop plates 42. In this embodiment, the elastic member 4 is a spring.

[0073] When the mass sphere 1 drives the constraint device 8 to produce horizontal displacement under wind-induced vibration, the constraint device 8 drives the connecting device 7 to displace, and the connecting device 7 simultaneously pushes the sliding connecting seat 6 to slide along the slide rod 21. When the sliding connecting seat 6 at one end slides out of the limiting area of ​​the limiting base 9 on the elastic member 4, the sliding connecting seat 6 at the other end opposite to it squeezes the elastic member 4, causing the spring to generate elastic force, giving the sliding connecting seat 6 a reaction force to attenuate the vibration of the mass sphere 1.

[0074] See attached Figure 7 As shown, one end of the damping member 5 is connected to the inner wall of the fixed seat 22, and the other end of the damping member 5 is connected to the sliding connection seat 6. The extension and contraction direction of the damping member 5 is the same as the sliding direction of the sliding connection seat 6. The damping member 5 is used to absorb the vibration energy transmitted by the connecting device 7 to slow down the vibration of the mass sphere 1.

[0075] The damping member 5 includes a cylinder 51 and a piston 52. The end of the piston 52 connected to the sliding connection seat 6 is provided with a hinge seat 53, and the piston 52 is hinged to the side wall of the sliding connection seat 6 via the hinge seat 53. The end of the cylinder 51 connected to the fixed seat 22 is also provided with a hinge seat 53, and the cylinder 51 is hinged to the inner side wall of the fixed seat 22 via the hinge seat 53.

[0076] When the mass sphere 1 drives the constraint device 8 to produce horizontal displacement under wind-induced vibration, the constraint device 8 drives the connecting device 7 to move, and the connecting device 7 simultaneously pushes the sliding connection seat 6 to slide along the slide rod 21. When the sliding connection seat 6 at one end slides out of the limiting area of ​​the limiting base 9 on the elastic member 4, the sliding connection seat 6 on that side drives the piston 52 of the damping member 5 to give the sliding connection seat 6 a reverse damping force. At this time, the sliding connection seat 6 at the other end opposite to it squeezes the corresponding end of the elastic member 4 in the limiting area of ​​the limiting base 9, causing the elastic member 4 to generate elastic force, giving the sliding connection seat 6 located in the limiting area a reaction force. The reverse force generated by the elastic member 4 and the damping member 5 on the sliding connection seat 6 is transmitted to the building structure through two force transmission paths to attenuate the vibration generated by the building structure.

[0077] The above force transmission path includes: the reaction force is transmitted to the mass sphere 1 through the connecting device 7, then transmitted to the chassis 3 through the mass sphere 1, and the chassis 3 is transmitted to the building structure; and the reaction force is transmitted to the building structure through the support 2 and the limiting base 9.

[0078] The elastic member 4 mounted on the connecting rod 41 can be replaced by disassembling the connecting rod 41. The elastic member 4 can be replaced by removing the bolt at the end of the connecting rod 41 and removing the connecting rod 41 from the second through hole 62. By replacing the elastic member 4, the stiffness of the elastic member can be adjusted, thereby adjusting the natural vibration period of the damper to match the natural vibration period of the building, thereby achieving a more prominent and stable vibration reduction effect. Furthermore, the bidirectional passive tuned mass damper of the present application is provided with force transmission components in both directions (the first direction and the second direction), enabling the damper to achieve bidirectional control of a single mass sphere 1, thereby achieving bidirectional control of wind-induced vibrations of the building structure.

[0079] The present invention also provides a tuning method for a bidirectional passive tuned mass damper, comprising the following steps:

[0080] Step 1: Confirm the two translation periods of the building structure;

[0081] Step 2: Calculate the first direction of the bidirectional passive tuned mass damper T 1 and second direction T The natural oscillation period of 2 is calculated as follows: in, T 1.T 2 are the natural oscillation periods in the first and second directions respectively, m is the total mass of mass sphere 1, g is the acceleration due to gravity, R 、 r are the orbit curvature radius and the mass sphere radius, k 1. k 2 are the elastic recovery stiffness of the elastic member 4 in the first direction and the second direction of the bidirectional passive tuned mass damper respectively;

[0082] Step 3: Based on the calculation results of step 2, determine whether the natural vibration period of the bidirectional passive tuned mass damper matches the translation period of the building structure. If they match, the tuning is completed.

[0083] If it does not match, adjust R 、 r 、 k 1. k 2, repeat step 2 until the natural vibration period of the bidirectional passive tuned mass damper matches the two translation periods of the building structure;

[0084] The first two modes of the building structure are both translational (this translation is relative to the structural plane's torsion; that is, the building plane does not torsion, but the structure itself is bending). Each mode corresponds to a natural vibration period, so the two translational modes have two natural vibration periods. Accordingly, the natural vibration periods of the bidirectional passive tuned mass damper in both directions must match the two translational periods of the building structure to achieve bidirectional vibration reduction.

[0085] Step 4: Adjust according to step 3 R 、 r 、 k 1. k 2, the mass sphere 1 and the elastic member 4 matching the parameters of the bidirectional passive tuned mass damper are replaced, and the tuning is completed.

[0086] Through the above tuning method, the two natural vibration periods of the bidirectional passive tuned mass damper can be close to the two translation periods of the building structure, so as to achieve the purpose of bidirectional vibration reduction.

[0087] As attached Figure 12 , Attachment Figure 13 As shown in the figure, a 70-story shear wall structure subjected to a 50-year return period fluctuating wind load was used as an example to simulate the bidirectional acceleration response of the top floor of the structure using numerical simulation, and the corresponding time history curve was obtained. It was found that the bidirectional passive tuned mass damper of the present invention significantly clipped the bidirectional acceleration response of the top floor of the structure, demonstrating that the bidirectional passive tuned mass damper of the present invention has good vibration reduction performance.

[0088] On this basis, the bidirectional passive tuned mass damper of the present invention occupies a vertical space of less than 3 m, while the traditional pendulum TMD occupies a vertical space of more than 7 m. The device of the present invention occupies even less vertical space in the building.

[0089] The present invention provides a bidirectional passive tuned mass damper (TMD). A single mass sphere 1 is placed on a chassis 3 with a groove 31, replacing the existing pendulum-type TMD device that requires a single sphere to be suspended. This design saves vertical building space and improves space utilization. Furthermore, it significantly reduces the detuning of traditional rolling TMD devices, achieving bidirectional vibration reduction.

[0090] By providing the constraint device 8 to constrain the mass sphere 1, the movement of the mass sphere 1 can be constrained. As the mass sphere 1 rolls and pushes the constraint device 8, the connecting device 7 eliminates the vertical displacement of the mass sphere 1, so that the horizontal displacement of the slider 6 is consistent with the horizontal displacement of the mass sphere 1.

[0091] By setting up a bidirectional support 2 as a force transmission structure, the displacement generated by the mass sphere 1 can be transmitted to the force transmission component on the support 2, and then the damping force provided by the force transmission component is transmitted to the building structure.

[0092] By providing a sliding connection seat 6 as a force transmission carrier, the mass sphere 1 is subjected to the forces of the spring 4 and the damping element 5 during rolling. By providing a detachable connecting rod 41 in the second through hole 62 at the bottom of the sliding connection seat 6, the bidirectional passive tuned mass damper can change the spring stiffness by replacing the elastic element 4 according to the use of the building structure, achieving bidirectional tuning of the passive tuned mass damper, making the vibration reduction effect more prominent and stable.

[0093] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0094] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0095] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0096] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0097] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A bidirectional passive tuned mass damper, characterized in that: include: Chassis (3), mass sphere (1), support (2), restraint device (8), connecting device (7) and force transmission component; The mass sphere (1) is arranged to roll in a groove (31) on the top of the chassis (3); The restraining device (8) is a hemispherical frame structure, comprising an annular frame (81) arranged around the middle of the mass sphere (1) and an arc-shaped frame (82) arranged around the upper half of the mass sphere (1); The support (2) is arranged relative to the outer edge of the chassis (3) along a first direction and a second direction respectively, and the first direction is perpendicular to the second direction; A force transmission component is provided on each of the supports (2), and the connecting device (7) is a telescopic structure. The connecting device (7) connects the restraining device (8) and the force transmission component to attenuate the displacement of the mass sphere (1) generated when the building structure vibrates; The support (2) comprises a pair of fixing seats (22) fixed on the building structure, and a sliding rod (21) fixedly connected between the fixing seats (22), and the connecting device (7) is slidably connected to the sliding rod (21); The connecting device (7) comprises a connecting tube (71) and a telescopic rod (72), wherein the telescopic rod (72) is telescopically arranged in the connecting tube (71), the connecting end of the connecting tube (71) is hinged to the sliding rod (21), and the telescopic end of the telescopic rod (72) is hinged to the annular frame (81); The force transmission assembly comprises an elastic member (4) and a sliding device for connecting the elastic member (4) to the sliding rod (21), wherein the elastic member (4) and the sliding device are detachably connected; The sliding device comprises a pair of sliding connection seats (6) and a connecting rod (41) passing through the sliding connection seats (6), the sliding connection seats (6) are slidably connected to the sliding rod (21), and the connecting rod (41) is fixedly connected to the sliding connection seats (6) by bolts; It also includes a damping member (5), one end of the damping member (5) is connected to the inner side wall of the fixed seat (22), the other end of the damping member (5) is connected to the sliding connection seat (6), and the telescopic direction of the damping member (5) is the same as the sliding direction of the sliding connection seat (6).

2. The bidirectional passive tuned mass damper according to claim 1, characterized in that: The end portion of the connecting device (7) connected to the slide rod (21) is located between the two sliding connection seats (6), and the connecting device (7) can push the sliding connection seat (6) to slide along the slide rod (21).

3. The bidirectional passive tuned mass damper according to claim 1, characterized in that: It also includes position limiting bases (9) arranged in pairs, the bottoms of the position limiting bases (9) being fixedly connected to the building structure; The limiting base (9) has a through slot capable of passing through the sliding connection seat (6), the through slot is located below the slide rod (21), and the communication direction of the through slot is consistent with the extension direction of the slide rod (21).

4. The bidirectional passive tuned mass damper according to claim 3, characterized in that: The elastic member (4) is sleeved on the connecting rod (41), and limiting plates (42) are provided at both ends of the elastic member (4), and the limiting plates (42) abut against the sliding connection seat (6); The width of the limiting plate (42) is greater than the through slot of the limiting base (9), so that a limiting area for the elastic member (4) is formed between the two limiting plates (42).

5. A tuning method for a bidirectional passive tuned mass damper, characterized in that: The bidirectional passive tuned mass damper according to any one of claims 1 to 4 comprises the following steps: Step 1: Confirm the two translation periods of the building structure; Step 2: Calculate the first direction of the bidirectional passive tuned mass damper T 1 and second direction T The natural oscillation period of 2 is calculated as follows: ； in, T 1 is the natural oscillation period in the first direction, T 2 is the natural oscillation period in the second direction, m is the total mass of the mass sphere (1), g is the acceleration due to gravity, R is the track curvature radius, r is the mass sphere radius, k 1 is the elastic recovery stiffness of the elastic member (4) in the first direction, k 2 is the elastic recovery stiffness of the elastic member (4) in the second direction; Step 3: Based on the calculation results of step 2, determine whether the natural vibration period of the bidirectional passive tuned mass damper matches the translation period of the building structure. If they match, the tuning is completed. If it does not match, adjust R, r, k 1 、k 2, and repeat step 2 until the natural vibration period of the bidirectional passive tuned mass damper matches the two translation periods of the building structure.

6. The tuning method of a bidirectional passive tuned mass damper according to claim 5, characterized in that: Also includes: Step 4: Adjust according to step 3 R 、 r 、 k 1. k 2, the mass sphere (1) and the elastic member (4) matching the parameters are replaced for the bidirectional passive tuned mass damper, and the tuning is completed.

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