CN217557217U - Chessboard type tuned mass damper support - Google Patents
Chessboard type tuned mass damper support Download PDFInfo
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- CN217557217U CN217557217U CN202221608014.8U CN202221608014U CN217557217U CN 217557217 U CN217557217 U CN 217557217U CN 202221608014 U CN202221608014 U CN 202221608014U CN 217557217 U CN217557217 U CN 217557217U
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- flange plate
- lower flange
- sma
- upper flange
- tuned mass
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Abstract
The utility model relates to a chessboard type tuned mass damper support, which comprises a lower flange plate with a groove, a plurality of ball trays arranged in the lower flange plate, a plurality of balls arranged at the upper ends of the ball trays, an upper flange plate arranged on the balls, a plurality of SMA springs and a plurality of viscous dampers; the ball trays are uniformly arranged at intervals, and the size of the upper flange plate is larger than the distance between the ball trays; the SMA spring and the viscous damper are horizontally arranged, and two ends of the SMA spring and the viscous damper are respectively connected with the inner wall of the lower flange plate and the side wall of the upper flange plate; by adopting a rolling structure, a large displacement space is given to the mass block, an SMA shape memory alloy spring is adopted to transmit the interaction force between the TMD substructure and the main structure, and partial energy of the TMD substructure is consumed by the viscous damper.
Description
Technical Field
The utility model relates to a harmonious mass damper support of chessboard formula belongs to engineering shock attenuation technical field.
Background
Tuned Mass Dampers (TMDs) are an effective means of structural vibration control. When the TMD subsystem is additionally arranged in the main structure, the natural vibration frequency of the TMD is adjusted to be close to the natural vibration frequency of the main structure, when the main structure is acted by external power, the mass block in the TMD can apply an inertia force in the opposite direction to the main structure to restrain the vibration of the main structure, and energy is dissipated through the damping device in the TMD.
At present, the mounting mode of the TMD is mainly a suspension type and a support type, the suspension type is to suspend a mass block on a main structure, and a spring and a damper system are arranged between the suspended mass block and the main structure, in order to ensure the movement stroke of the TMD in the horizontal direction, a suspended rope needs to have a certain length, and occupies a larger vertical space.
The supporting mode is that the mass block is supported on the main structure through the movable support, but when the excellent period of external excitation is close to the natural vibration period of the main structure, the main structure is easy to resonate, the dynamic response of the main structure is obviously increased, the stroke of TMD is also obviously increased, and the displacement limit value of the common support is possibly exceeded. Limiting the stroke size of the TMD affects the effectiveness of the TMD in controlling structural vibration. In view of this, many scholars have been dedicated to search for more efficient methods to ensure the horizontal travel of TMD.
Tuned Mass Dampers (TMD) are widely regarded for their characteristics of small modification to the original structure, simple construction, significant damping effect, etc., and are widely used in civil engineering at home and abroad. In order to control the horizontal vibration of the structure, a suspended tuned mass damper is usually adopted, and the pendulum length is adjusted to tune the simple pendulum frequency and the structure frequency, so that the vibration control effect is achieved. However, in many cases, the use of simple pendulums is limited for space or technical reasons.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies in the prior art, the utility model aims to solve the technical problem that: the stress form of the common support is changed, so that the support can still play a role in supporting the mass block and providing restoring force under the condition of large displacement.
By adopting a rolling structure, a large displacement space is provided for the mass block, an SMA (shape memory alloy) spring is adopted to transmit the interaction force between the TMD substructure and the main structure, and partial energy of the TMD substructure is consumed by the viscous damper; in order to achieve the above purpose, the utility model adopts the following technical scheme: the device comprises a lower flange plate with a groove, a plurality of ball trays arranged in the lower flange plate, a plurality of balls arranged at the upper ends of the ball trays, an upper flange plate arranged on the balls, a plurality of SMA springs and a plurality of viscous dampers; the ball trays are uniformly arranged at intervals, and the size of the upper flange plate is larger than the distance between the ball trays; the SMA spring and the viscous damper are horizontally arranged, and two ends of the SMA spring and the viscous damper are respectively connected with the inner wall of the lower flange plate and the side wall of the upper flange plate.
Furthermore, a plurality of sliding blocks capable of sliding along the horizontal direction are arranged on the side wall of the lower flange plate; each slider is connected with one of the SMA springs and one of the viscous dampers.
Further, the upper flange plate and the lower flange plate are square in shape.
Furthermore, the number of the SMA springs, the number of the viscous dampers and the number of the sliding blocks are multiples of four, the number of the SMA springs, the viscous dampers and the number of the sliding blocks, which are arranged in each direction, are consistent, and the pulling forces in the four directions are consistent by adjusting the rigidity of the SMA springs, so that the balance of the upper flange plate is maintained.
Further, a spherical cap lining plate is arranged above the ball tray, a plurality of grooves for placing the balls are formed in the spherical cap lining plate, and the balls on the upper portion of the ball tray are in contact connection with the ball tray through the spherical cap lining plate.
Furthermore, the upper flange plate is connected with a column body of the building structure through foundation bolts, and the lower flange plate is connected with the foundation through the foundation bolts.
Compared with the prior art the utility model discloses there are following characteristics and beneficial effect:
1. compared with the common support, the support has smaller displacement limit value, and provides a larger moving range for the upper auxiliary structure so as to meet the required stroke when the TMD plays a damping role.
2. The tuned mass damping system can be formed by installing the TMD large-displacement movable support and utilizing the mass of the building top auxiliary structure, the whip tip effect can be effectively avoided by the auxiliary structure at the top of the building when an earthquake occurs, and the shock absorption and energy consumption effects are achieved.
3. The utility model discloses can replace the hoist cable of simple pendulum, place building upper portion additional structure on the support, can effectively utilize upper portion additional structure's quality to unfavorable response when avoiding earthquake effect forms a simple to operate, low price, power consumption ability is good, the good novel TMD device of durability, has great engineering meaning.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Wherein the reference numerals are: 1. a viscous damper; 2. an SMA spring; 3. an upper flange plate; 4. a ball bearing; 5. a slider; 6. a ball tray; 7. a lower flange plate; 8. the spherical cap lining plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 2, the damper comprises a lower flange plate 7 with a groove, a plurality of ball trays 6 arranged in the lower flange plate 7, a plurality of balls 4 arranged at the upper ends of the ball trays 6, an upper flange plate 3 arranged on the balls 4, a plurality of SMA springs 2 and a plurality of viscous dampers 1; the ball trays 6 are uniformly arranged at intervals, and the size of the upper flange plate 3 is larger than the distance between the ball trays 6; the SMA spring 2 and the viscous damper 1 are horizontally arranged, and two ends of the SMA spring are respectively connected with the inner wall of the lower flange plate 7 and the side wall of the upper flange plate 3.
Preferably, a plurality of sliding blocks 5 capable of sliding along the horizontal direction are arranged on the side wall of the lower flange plate 7; any slide 5 is connected with a group of SMA springs 2 and a viscous damper 1.
Preferably, the upper flange plate 3 and the lower flange plate 7 are square in shape.
Preferably, the number of SMA springs 2, viscous dampers 1 and sliders 5 is a multiple of four.
Preferably, a spherical cap lining plate 8 is arranged above the ball tray 6, and the spherical cap lining plate 8 is provided with a plurality of grooves for placing the balls 4.
Preferably, the upper flange plate 3 is connected with the column of the building structure by means of anchor bolts, and the lower flange plate 7 is connected with the foundation by means of anchor bolts.
The utility model discloses a theory of operation: the upper flange plate 3 and the lower flange plate 7 are respectively connected with a node plate of the structural column, and the vibration period of the TMD is adjusted by changing the rigidity of the SMA spring; the upper flange plate 3 is connected with a column body through foundation bolts, the lower flange plate 7 is connected with a foundation through the foundation bolts, the upper flange plate 3 is placed in the upper middle position of the balls 4 of the lower flange plate 7, and the two ends of the upper flange plate 3 and the two ends of the viscous damper 1 are connected with the upper flange plate 3 and the lower flange plate 7 respectively through the SMA spring 2 and the viscous damper 1. The period of the TMD is adjusted to be close to the natural vibration period of the structure by changing the rigidity of the SMA spring 2 to adjust the natural vibration period of the TMD. Under the conventional state, the support is used as a traditional support; when an earthquake occurs, the upper flange plate 3 and the lower flange plate 7 generate large relative displacement under the action of the middle ball 4, the TMD sub-structure and the main structure generate relative displacement and generate interaction force, and the interaction force is transmitted to the main structure through the SMA spring 2, so that the phenomenon of vibration of the main structure is inhibited, and the effects of shock absorption and energy consumption are achieved. The moving stroke of the TMD substructure is controlled by the side length of the lower flange plate 7, and the displacement limit value can be greatly higher than that of a common support.
It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (6)
1. Harmonious mass damper support of chess board formula, its characterized in that: the damping device comprises a lower flange plate (7) with a groove, a plurality of ball trays (6) arranged in the lower flange plate (7), a plurality of balls (4) arranged at the upper ends of the ball trays (6), an upper flange plate (3) arranged on the balls (4), a plurality of SMA springs (2) and a plurality of viscous dampers (1); the ball trays (6) are uniformly arranged at intervals, and the size of the upper flange plate (3) is larger than the distance between the ball trays (6); the SMA spring (2) and the viscous damper (1) are horizontally arranged, and two ends of the SMA spring and the viscous damper are respectively connected with the inner wall of the lower flange plate (7) and the side wall of the upper flange plate (3).
2. The checkerboard tuned mass damper mount of claim 1, wherein: a plurality of sliding blocks (5) capable of sliding along the horizontal direction are arranged on the side wall of the lower flange plate (7); any sliding block (5) is connected with a group of SMA springs (2) and a viscous damper (1).
3. The checkerboard-type tuned mass damper mount of claim 1, wherein: the upper flange plate (3) and the lower flange plate (7) are square.
4. The checkerboard tuned mass damper mount of claim 3, wherein: the number of the SMA springs (2), the viscous damper (1) and the sliding block (5) is a multiple of four.
5. The checkerboard tuned mass damper mount of claim 1, wherein: a spherical crown lining plate (8) is arranged above the ball tray (6), and a plurality of grooves for placing the balls (4) are formed in the spherical crown lining plate (8).
6. The checkerboard tuned mass damper mount of claim 1, wherein: the upper flange plate (3) is connected with a column body of a building structure through foundation bolts, and the lower flange plate (7) is connected with a foundation through the foundation bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221608014.8U CN217557217U (en) | 2022-06-24 | 2022-06-24 | Chessboard type tuned mass damper support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221608014.8U CN217557217U (en) | 2022-06-24 | 2022-06-24 | Chessboard type tuned mass damper support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217557217U true CN217557217U (en) | 2022-10-11 |
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ID=83503502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221608014.8U Active CN217557217U (en) | 2022-06-24 | 2022-06-24 | Chessboard type tuned mass damper support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217557217U (en) |
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2022
- 2022-06-24 CN CN202221608014.8U patent/CN217557217U/en active Active
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