Fabricated in-wall tuned mass damper structure and using method thereof

Abstract

The invention discloses an assembly type in-wall tuned mass damper structure which comprises a damper frame, energy dissipation units are symmetrically connected to the two sides in the damper frame, a pendulum bob unit is connected between the two energy dissipation units and comprises two pendulum bobs, and the two sides of the two pendulum bobs are symmetrically connected with two supporting columns through steel strands correspondingly. The four supporting columns are connected with the energy dissipation unit, the two pendulum bobs are connected with the damper frame through the spring supporting unit, and the two pendulum bobs are connected through the spring tie bar unit. The damper further comprises an assembly wall, a groove is formed in the center of the assembly wall, and the damper frame is arranged in the groove. The invention further discloses a using method of the fabricated in-wall tuned mass damper structure. According to the assembly type in-wall tuned mass damper structure and the using method thereof, the problem that in the prior art, the energy dissipation capacity efficiency of a TMD is low is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering vibration reduction, and in particular relates to an assembled in-wall tuned mass damper structure, and also relates to a method for using the assembled in-wall tuned mass damper structure. Background Art

[0002] With the diversification of engineering structure functions, the development of structural calculation methods and lightweight high-strength materials has brought about more and more attention to the vibration problems of tall and long-span structures in the engineering and academic circles, which has led to the rapid development of vibration control technology. Tuned mass dampers are one of the main forms of vibration control. In recent years, the theoretical research on tuned vibration reduction technology has become more mature and its application has become more extensive. Since the tuned mass damper (TMD) can effectively attenuate the dynamic response of the structure, has a simple structure, is easy to install, easy to maintain, and is economical and practical, it has been widely used as a wind-resistant vibration device for high-rise buildings, tall structures and long-span bridges.

[0003] In the related technology, the tuned mass damper is actually a dynamic vibration absorber, which amplifies the vibration of the main structure and transmits it to the TMD mass block through the principle of resonance, and dissipates this part of the vibration energy through its own damping device to achieve rapid attenuation of the vibration of the main structure. The tuned mass damper is usually composed of a mass block, a spring, and a damping device. At present, TMD has been successfully used to control the vibration of engineering structures, such as wind vibration, earthquake and other forms of vibration. However, traditional TMD has problems with its own size and weight, which will lead to high cost and low space utilization. At the same time, the efficiency of TMD energy consumption capacity is low, and the damping device is difficult to repair after damage. This has become the focus of research for many domestic and foreign scholars, who are all studying how to reduce the mass of the device itself to achieve greater benefits. Summary of the invention

[0004] The first object of the present invention is to provide an assembled in-wall tuned mass damper structure, which solves the problem of low efficiency of TMD energy dissipation capacity in the prior art.

[0005] A second object of the present invention is to provide a method for using the assembled in-wall tuned mass damper structure.

[0006] The first technical solution adopted by the present invention is that the assembled in-wall tuned mass damper structure includes a damper frame, energy dissipation units are symmetrically connected on both sides of the damper frame, a pendulum unit is connected between the two energy dissipation units, the pendulum unit includes two pendulums, two sides of the two pendulums are symmetrically connected to two pillars through steel strands, four pillars are connected to the energy dissipation unit, the two pendulums are connected to the damper frame through spring support units, and the two pendulums are connected through a spring tie rod unit;

[0007] It also includes an assembly wall, a groove is opened at the center of the assembly wall, and the damper frame is arranged in the groove.

[0008] The first technical solution of the present invention is also characterized in that:

[0009] The energy absorption unit includes a first energy absorption support and a second energy absorption support. The first energy absorption support includes a first steel plate support and two first high damping springs. One end of the two first high damping springs are respectively connected to the first steel plate support, and the other end is respectively connected to the damper frame; the second energy absorption support includes a second steel plate support and two second high damping springs. One end of the two second high damping springs are respectively connected to the second steel plate support, and the other end is respectively connected to the damper frame. Damping rods are respectively arranged in the two second high damping springs. The bottom ends of the two damping rods are respectively connected to the damper frame, and the top ends of the two damping rods are respectively connected to the second steel plate support.

[0010] Rubber pads are provided between the first steel plate support and the second steel plate support and the damper frame respectively.

[0011] The first steel plate support and the second steel plate support are respectively fixed with pads at the bottom, and the two pads are respectively provided with grooves matching the pillars. A mass block is provided between the two pads, and the ends of the four pillars away from the pendulum are convex and match the grooves provided on the pads, and the four pillars are respectively installed in the grooves.

[0012] The diameter of the four pillars at one end close to the pendulum is smaller than the diameter of the four pillars at one end close to the pad.

[0013] Steel teeth are symmetrically fixed on both sides of the damper frame.

[0014] The spring support unit comprises a first spring support, the first spring support is connected with a spring and a second spring support in sequence, the first spring support is connected with the damper frame, and the second spring support is connected with the pendulum.

[0015] The spring tie rod unit comprises two ball joint supports which are respectively connected to two pendulum side walls. A damping tie rod is connected between the two ball joint supports via a circular ball joint. A damping spring is sleeved on the outer wall of the damping tie rod.

[0016] The second technical solution adopted by the present invention is a method for using an assembled wall tuned mass damper structure, which adopts an assembled wall tuned mass damper, specifically: when the building is subjected to vibration caused by wind or earthquake, the mass block in the damper frame will swing, and the pendulum will compress the spring support unit and the spring tie rod unit. At the same time, the mass block will stretch the steel strand when swinging, and the steel strand will stretch the mass block to reset; when the building is subjected to a Z vibration level limit of no more than 70dB, after the mass block swings, the pillar will be separated from the pad groove and will be reset by gravity. When the building is subjected to a Z vibration level limit of 70-78dB, the first high damping springs at both ends of the damper frame will assist the pad and the mass block in energy dissipation and self-recovery.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The assembled in-wall tuned mass damper structure provided by the present invention will inevitably cause high-rise buildings to shake when affected by strong winds or earthquakes. When the building shakes under the action of external loads, the internal components of the damper will break the dynamic balance and will undergo large movements to absorb the kinetic energy of the building.

[0019] (2) The assembled in-wall tuned mass damper structure provided by the present invention, in which the TMD is arranged in the wall, can be installed and used in building structures subject to vibration while reducing the large floor space occupied by the traditional TMD and solving the problem of complex construction process, and has strong applicability. It can be selectively installed in the required position of the building according to the actual design situation, will not significantly increase the weight of the building, and is not subject to horizontal and vertical position restrictions and applicable quantity restrictions. Since the traditional single TMD is dispersed into each wall, compared with each wall, it bears less mass, has stronger fatigue damage resistance, and has a longer service life.

[0020] (3) The assembled in-wall tuned mass damper structure provided by the present invention can be divided into a mass block and a damping tie rod. While providing a damping ratio for the mass block, the damping tie rod also amplifies the amplitude transmitted thereto. Through the secondary amplification effect of the damping tie rod, the shock absorbing effect of the structure is better exerted, and a lightweight design is achieved, thereby increasing the TMD energy consumption efficiency.

[0021] (4) The assembled in-wall tuned mass damper structure provided by the present invention can provide a restoring force to restore the structure to its original equilibrium state when the mass block is about to break the dynamic equilibrium, thereby basically maintaining the elasticity of the main components, improving the anti-vibration ability, and effectively reducing the vibration damage of the building structure. When a damper component is damaged, the impact on other dampers is relatively small, and due to the design of the damping frame, rapid maintenance and replacement can be achieved.

[0022] (5) The assembled in-wall tuned mass damper structure provided by the present invention can restore to its original state according to its own weight when there is a small vibration by releasing the contact between the mass block and the parts connected at both ends, thereby increasing the service life of the structure.

[0023] (6) The assembled in-wall tuned mass damper structure provided by the present invention can be constructed and assembled by factory processing and assembly, thereby reducing the requirements for on-site operations and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the assembled in-wall tuned mass damper structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the connection between the pendulum unit, the spring support unit and the spring tie rod unit of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the first energy-absorbing support of the present invention.

[0027] In the figure, 1. pendulum, 2. support, 3. steel strand, 4. fixing nut,

[0028] 5. Spring support unit, 501. First spring support. 502. Spring, 503. Second spring support,

[0029] 6. Spring tie rod support, 601. Ball joint support, 602. Damping spring, 603. Circular ball joint, 604. First damping tie rod,

[0030] 7. Pad, 8. Steel plate support, 9. Rubber pad, 10. First high damping spring, 11. Second damping tie rod, 12. Damper frame, 13. Steel teeth, 14. Mounting wall, 15. Track, 16. Second steel plate support, 17. Second high damping spring. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] The present invention provides an assembled in-wall tuned mass damper structure, such as Figure 1-3As shown, it includes a damper frame 12, and energy consuming units are symmetrically connected on both sides of the damper frame 12, and a pendulum unit is connected between the two energy consuming units. The pendulum unit includes two pendulums 1, and the pendulum 1 is a hollow steel ball. The center can be filled with low-cost and high-quality materials such as recycled concrete, and the heavier the mass, the stronger the energy consuming capacity of the component; the pendulums 1 are arranged in pairs, and the outer curvature is greater than the inner curvature to reduce mutual collision; and a hole is reserved in the middle of the pendulum 1 to pass the steel strand 3; the two pendulums 1 are symmetrically connected to two pillars 2 on both sides through the steel strand, and the four pillars 2 are connected to the energy consuming unit, and the four The pillars 2 are symmetrically arranged, and the two pendulums 1 are connected to the damper frame 12 through the spring support unit 5 respectively. When the pendulum 1 vibrates, the spring deforms to dissipate the vibration capacity and prevent the pendulum from hitting the damper frame 12; and the two pendulums 1 are connected through the spring tie rod unit 6. In order to further reduce the impact of the two pendulums 1, a first damping tie rod 604 is added in the middle of the spring. Since the swing of the pendulum 1 is a three-dimensional motion, the first damping tie rod 604 has ball joints on both sides, which can increase spring support between the pendulums 1; it also includes an assembly wall 14, and a groove is opened in the center of the assembly wall 14, and the damper frame 12 is arranged in the groove. The energy dissipation unit includes a first energy dissipation support and a second energy dissipation support. The first energy dissipation support includes a first steel plate support 8 and two first high damping springs 10. One end of the two first high damping springs 10 is respectively connected to the first steel plate support 8, and the other end is respectively connected to the damper frame 12; the second energy dissipation support includes a second steel plate support 16 and two second high damping springs 17. One end of the two second high damping springs 17 is respectively connected to the second steel plate support 16, and the other end is respectively connected to the damper frame 12. Second damping tie rods 11 are respectively arranged in the two second high damping springs 17. The bottom ends of the two second damping tie rods 11 are respectively connected to the damper frame 12. The two second high damping springs 17 are respectively provided with second damping tie rods 11. The top ends of the two damping rods 11 are respectively connected to the second steel plate supports 16; rubber pads 9 are respectively provided between the first steel plate supports 8 and the second steel plate supports 16 and the damper frame 12; the first steel plate supports 8 and the second steel plate supports 16 are respectively fixed with pads 7 at the bottom, and the two pads 7 are respectively provided with grooves matching the pillars 2, and a mass block is provided between the two pads 7. The ends of the four pillars 2 away from the pendulum 1 are round and convex, matching the grooves provided on the pads 7, and the four pillars 2 are respectively fixed in the grooves by fixing nuts 4. When the three-section mass block is vibrated out of the groove, it can be slid back into the groove by the high damping spring and the weight of the component to achieve position recovery.

[0033] The column diameter of the four pillars 2 near the pendulum 1 is smaller than the column diameter near the pad 7, which can limit the swing direction of the pendulum 1 and reduce the outward swing of the middle pendulum as much as possible to avoid hitting the damper frame 12, and a hole is reserved in the middle of the pillar 2 so that the steel strand 3 can pass through; the damper frame 12 is symmetrically fixed with steel teeth 13 on both sides; the spring support unit 5 includes a first spring support 501, the first spring support 501 is connected with a spring 502 and a second spring support 503 in sequence, the first spring support 501 is connected to the damper frame 12, and the second spring support 503 is connected to the pendulum 1; the spring tie rod unit 6 includes two ball joint supports 601, the two ball joint supports 601 are respectively connected to the side walls of the two pendulums 1, the two ball joint supports 601 are connected to the first damping tie rod 604 through a circular ball joint 603, and the outer wall of the first damping tie rod 604 is sleeved with a damping spring 602.

[0034] The assembly wall 14 is connected to the damper frame 12 and the steel teeth 13 on the frame column by bolts, and the assembly wall 14 is quickly connected to the frame beam by a slide rail 15 and fixed to the frame beam by bolts up and down. The assembly wall 14 has a quick installation function, and has the function of quickly installing and supporting the damper for the building where the damper is to be installed.

[0035] The installation process of the assembled in-wall tuned mass damper structure of the present invention is as follows:

[0036] During the installation process, on the assembly wall 14, the slide rails 15 can be prefabricated on the upper and lower sides of the frame beam, and steel teeth can be installed on both sides of the frame column. The assembly walls 14 on both sides can be quickly installed through the slide rails 15, and inserted into the steel teeth on the frame column through the grooves provided on the assembly wall 14, and fixed with high-strength bolts. The damper frame 12 is placed in the middle hole of the assembly wall 14, fixed to the middle span of the frame beam by bolts, and fixed to the groove of the assembly wall 14 by bolts of steel teeth 13 on both sides, and the first energy-absorbing support and the second energy-absorbing support are installed at both ends, wherein the first energy-absorbing support and the second energy-absorbing support are respectively installed with the first high-damping spring 10 and the second high-damping spring 17, wherein the second damping tie rod 11 is installed in the second high-damping spring 17 installed in the second energy-absorbing support at the lower end, and the rubber pad 9 is installed on the other side of the first steel plate support 8 and the second steel plate support 16, so that the inserted steel plate support cannot shake left and right, and the pad 7 is installed at the bottom of the two steel plate supports, and the support 2 and the pendulum 1 are connected by steel strands 3, and prestress is applied in advance and fixed by fixing nuts 4. The spring tie rod unit 6 is installed between the installed three-stage mass blocks, and then symmetrically inserted between the upper and lower pads 7, and the first high-damping spring 10 is squeezed, so that a part of its own pressure can support the three-stage mass block and stabilize its position. The spring support unit 5 is installed between the installed pendulum 1 and the inner wall of the damper frame 12 .

[0037] The present invention also provides a method for using an assembled wall tuned mass damper structure, specifically: after the building is subjected to vibration caused by wind or earthquake, the three-section mass block inside the damper frame 12 will swing to dissipate energy, and the swing of the pendulum 1 will compress the spring support unit 5 and the spring tie rod unit 6, while preventing the pendulums 1 from touching each other or the pendulum 1 and the inner wall of the damper frame 12, and consuming energy; the three-section mass block will stretch the steel strand 3 when swinging, and the prestressed steel strand 3 will stretch the three-section mass block to reset; when the building is subjected to a Z vibration level limit of no more than 70dB, after the mass block swings, the pillar 2 will separate from the pad groove and will be reset by gravity, and when the Z vibration level limit is 70-78dB, the first high damping springs 10 at both ends of the damper frame 12 will assist the pad and the three-section mass block in consuming energy and self-recovery. The assembly wall 14 can be quickly installed and also limits and fixes the middle tuned mass damper. The assembly wall 14 is designed according to the actual project and cast in the factory, which can realize dust-free construction on site. Most of the vibration energy is dissipated by the vibration of the three-section mass block, and auxiliary energy dissipation is performed through springs at various positions, and reset is mainly performed through deadweight and prestressed steel strands 3 to achieve the ability of repeated swinging.

[0038] Example 1

[0039] This embodiment provides an assembled in-wall tuned mass damper structure, such as Figure 1-3 As shown, it includes a damper frame 12, energy absorbing units are symmetrically connected on both sides of the damper frame 12, a pendulum unit is connected between the two energy absorbing units, the pendulum unit includes two pendulums 1, two sides of the two pendulums 1 are symmetrically connected to two pillars 2 through steel strands 3, four pillars 2 are connected to the energy absorbing units, the two pendulums 1 are connected to the damper frame 12 through spring support units 5, and the two pendulums 1 are connected through a spring tie rod unit 6; it also includes an assembly wall 14, a groove is opened in the center of the assembly wall 14, and the damper frame 12 is arranged in the groove.

[0040] Example 2

[0041] On the basis of Example 1, Figure 1-3As shown, the energy dissipation unit includes a first energy dissipation support and a second energy dissipation support. The first energy dissipation support includes a first steel plate support 8 and two first high damping springs 10. One end of the two first high damping springs 10 is respectively connected to the first steel plate support 8, and the other end is respectively connected to the damper frame 12; the second energy dissipation support includes a second steel plate support 16 and two second high damping springs 17. One end of the two second high damping springs 17 is respectively connected to the second steel plate support 16, and the other end is respectively connected to the damper frame 12. Second damping tie rods 11 are respectively arranged in the two second high damping springs 17. The bottom ends of the two second damping tie rods 11 are respectively connected to the damper frame 12. The two second high damping springs 17 are respectively provided with second damping tie rods 11. The top ends of the two damping rods 11 are respectively connected to the second steel plate supports 16, rubber pads 9 are respectively provided between the first steel plate supports 8 and the second steel plate supports 16 and the damper frame 12, pads 7 are respectively fixed to the bottoms of the first steel plate supports 8 and the second steel plate supports 16, the two pads 7 are respectively provided with grooves matching the pillars 2, a mass block is provided between the two pads 7, the ends of the four pillars 2 away from the pendulum 1 are convex, matching the grooves provided on the pads 7, and the four pillars 2 are respectively fixed in the grooves by fixing nuts 4, the column diameters of the four pillars 2 close to the pendulum 1 are smaller than the column diameters close to the pads 7, and steel teeth 13 are symmetrically fixed to both sides of the damper frame 12.

[0042] Example 3

[0043] On the basis of Example 2, Figure 1-3 As shown, the spring support unit 5 includes a first spring support 501 , to which a spring 502 and a second spring support 503 are connected in sequence. The first spring support 501 is connected to the damper frame 12 , and the second spring support 503 is connected to the pendulum 1 .

[0044] The spring tie rod unit 6 includes two ball joint supports 601, which are respectively connected to the side walls of the two pendulums 1. A first damping tie rod 604 is connected between the two ball joint supports 601 via a circular ball joint 603, and a damping spring 602 is sleeved on the outer wall of the first damping tie rod 604.

[0045] Example 4

[0046] The present embodiment provides a method for using an assembled in-wall tuned mass damper structure, which uses the assembled in-wall tuned mass damper structure provided by the above embodiment, specifically: after the building is subjected to vibration caused by wind or earthquake, the three-section mass block inside the damper frame 12 will swing to dissipate energy, and the swing of the pendulum 1 will compress the spring support unit 5 and the spring tie rod unit 6, while preventing the pendulums 1 from touching each other or the pendulum 1 and the inner wall of the damper frame 12, and consuming energy; the three-section mass block will stretch the steel strand 3 when swinging, and the prestressed steel strand 3 will stretch the three-section mass block to reset; when the building is subjected to a Z vibration level limit of no more than 70dB, after the mass block swings, the pillar 2 will be separated from the pad groove and will be reset by gravity, and when the Z vibration level limit is 70-78dB, the first high damping springs 10 at both ends of the damper frame 12 will assist the pad and the three-section mass block in consuming energy and self-recovery. The assembly wall 14 can be quickly installed and also limits and fixes the middle tuned mass damper. The assembly wall 14 is designed according to the actual project and cast in the factory, which can realize dust-free construction on site. Most of the vibration energy is dissipated by the vibration of the three-section mass block, and auxiliary energy dissipation is performed through springs at various positions, and reset is mainly performed through deadweight and prestressed steel strands 3 to achieve the ability of repeated swinging.

[0047] The assembled in-wall tuned mass damper structure provided by the present invention can provide a restoring force to restore the structure to its original equilibrium state when the mass block is about to break the dynamic balance, thereby basically maintaining the elasticity of the main components, improving the vibration resistance and energy consumption efficiency, and effectively reducing the vibration damage of the building structure. When a damper component is damaged, the impact on other dampers is small, and due to the design of the damping frame, rapid maintenance and replacement can be achieved.

Claims

1. Prefabricated in-wall tuned mass damper structure, It is characterized in that The invention comprises a damper frame (12), wherein energy absorbing units are symmetrically connected on both sides of the damper frame (12), a pendulum unit is connected between the two energy absorbing units, the pendulum unit comprises two pendulums (1), two sides of the two pendulums (1) are symmetrically connected to two pillars (2) via steel strands (3), the four pillars (2) are connected to the energy absorbing units, the two pendulums (1) are connected to the damper frame (12) via spring support units (5), and the two pendulums (1) are connected via a spring tie rod unit (6); It also comprises an assembly wall (14), a groove is provided at the center of the assembly wall (14), and the damper frame (12) is arranged in the groove.

2. The assembled in-wall tuned mass damper structure according to claim 1, It is characterized in that The energy absorbing unit comprises a first energy absorbing support and a second energy absorbing support, wherein the first energy absorbing support comprises a first steel plate support (8) and two first high damping springs (10), one end of the two first high damping springs (10) are respectively connected to the first steel plate support (8), and the other end are respectively connected to the damper frame (12); the second energy absorbing support comprises a second steel plate support (16) and two second high damping springs (17), one end of the two second high damping springs (17) are respectively connected to the second steel plate support (16), and the other end are respectively connected to the damper frame (12), and the two second high damping springs (17) are respectively provided with second damping tie rods (11), the bottom ends of the two second damping tie rods (11) are respectively connected to the damper frame (12), and the top ends of the two second damping tie rods (11) are respectively connected to the second steel plate support (16).

3. The assembled in-wall tuned mass damper structure according to claim 2, It is characterized in that Rubber pads (9) are provided between the first steel plate support (8) and the second steel plate support (16) and the damper frame (12).

4. The assembled in-wall tuned mass damper structure according to claim 3, It is characterized in that The bottom of the first steel plate support (8) and the bottom of the second steel plate support (16) are respectively fixed with pads (7), and the two pads (7) are respectively provided with grooves matching the pillars (2), and a mass block is provided between the two pads (7), and the ends of the four pillars (2) away from the pendulum (1) are round and convex, matching the grooves provided on the pads (7), and the four pillars (2) are respectively fixed in the grooves by fixing nuts (4).

5. The assembled in-wall tuned mass damper structure according to claim 4, It is characterized in that The column diameter of the four pillars (2) at one end close to the pendulum (1) is smaller than the column diameter at one end close to the pad (7).

6. The assembled in-wall tuned mass damper structure according to claim 4, It is characterized in that Steel teeth (13) are symmetrically fixedly connected to both sides of the damper frame (12).

7. The assembled in-wall tuned mass damper structure according to claim 4, It is characterized in that The spring support unit (5) comprises a first spring support (501), the first spring support (501) being connected in sequence with a spring (502) and a second spring support (503), the first spring support (501) being connected to a damper frame (12), and the second spring support (503) being connected to a pendulum (1).

8. The assembled in-wall tuned mass damper structure according to claim 7, It is characterized in that The spring tie rod unit (6) comprises two ball joint supports (601), the two ball joint supports (601) are respectively connected to the side walls of two pendulums (1), a first damping tie rod (604) is connected between the two ball joint supports (601) via a circular ball joint (603), and a damping spring (602) is sleeved on the outer wall of the first damping tie rod (604).

9. How to use the prefabricated wall tuned mass damper structure, It is characterized in that The assembled wall tuned mass damper structure as claimed in any one of claims 1 to 8 is adopted, specifically: when the building is subjected to vibration caused by wind or earthquake, the mass block in the damper frame (12) will swing, the pendulum (1) will compress the spring support unit (5) and the spring tie rod unit (6), and at the same time, the mass block will stretch the steel strand (3) when swinging, and the steel strand (3) will stretch the mass block to reset; when the building is subjected to a Z vibration level limit of no more than 70dB, after the mass block swings, the support (2) will be separated from the pad groove and will be reset by gravity; when the building is subjected to a Z vibration level limit of 70-78dB, the first high damping springs (10) at both ends of the damper frame (12) assist the pad (7) and the mass block in energy consumption and self-recovery.

Images