CN206128342U - A vertical tuned mass damper for model test - Google Patents
A vertical tuned mass damper for model test Download PDFInfo
- Publication number
- CN206128342U CN206128342U CN201621040968.8U CN201621040968U CN206128342U CN 206128342 U CN206128342 U CN 206128342U CN 201621040968 U CN201621040968 U CN 201621040968U CN 206128342 U CN206128342 U CN 206128342U
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- mass
- base plate
- tmd
- top board
- spring
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Abstract
The utility model relates to a vertical tuned mass damper for model test, including roof, bottom plate and quality piece, roof and bottom plate pass through connecting screw rod to be connected, and the device is equipped with straight line track, straight line track and roof and bottom plate fixed connection, between roof and the quality piece, be equipped with the spring between bottom plate and the quality piece respectively, the quality piece with follow straighten line track from top to bottom gliding slider be connected, this quality piece is followed under the spring action and is straightened line track and be unipolar reciprocating motion. The utility model relates to a succinctly, the attachment device quality is little, and the installation is dismantled conveniently, spring quantity is according to the demand plus -minus, and the installation dismantles simple and directly, and the location symmetry is accurate, satisfies the model test demand, quality piece side -mounting is on linear guide, and gravity is born by compression spring, and at the in -process that vertical reciprocal high frequency moved, frictional force is less, can neglect the influence of attenuator frequency, has guaranteed vertical tuned mass damper power control's accuracy.
Description
Technical field
This utility model is related to building structure model damping test field, more particularly, to a kind of for the perpendicular of model test
To tuned mass damper, TMD.
Background technology
With the span and scale of economy and the needs of urban construction and development, building and bridge it is increasing, large span
Structure is common in physical culture, conference ＆ exhibition and Aerodrome Construction and Loads of Long-span Bridges etc..Using tuned mass damper, TMD (TMD) to greatly across
Degree structural vibration reduction, is a kind of economic and rational solution.TMD is
The vibrational system being made up of spring, antivibrator and mass.When main structure produces vibration under outer incentive action, frequency modulation is driven
Mass damper vibrates together, and its inertia force for producing is reacted in structure, and its damping also plays energy dissipating effect, makes main structure
Dynamic respons decay and be controlled.
In recent years, with a large amount of construction of large public building, TMD is designed to large-span space structure shockproof control
To the research of more and more people.Due to the complexity of self power characteristic, Theoretical Calculation is difficult to meet and wants large-span space structure
Ask, in order to preferably study damping effects of the TMD to longspan structure, it is requisite to carry out structural model damping test.
Large-span space structure has the dynamic traits such as the vibration shape is complicated, frequency is mixed, in order to probe into the mount scheme of optimal damper device,
During model test, the parameter such as arrangement and control frequency of antivibrator need to change at any time.Further, since large span is empty
Between structural dynamic characteristic and model contract than reason, frequency needed for antivibrator higher (typically in 10-30Hz), and quality it is less (with
Model contracting ratio is relevant with designing quality).This makes antivibrator very sensitive to rubbing, and a small amount of friction may be moved to the antivibrator
Force characteristic brings very big change so as to cannot meet TMD shock absorption principles.At present, also compare shortage one kind and be effectively used for model
The vertical tuned mass damper, TMD of test.
Utility model content
The purpose of this utility model provides a kind of installing/dismounting simplicity, changeable frequency to solve the above problems
For the vertical tuned mass damper, TMD of model test.
The purpose of this utility model is achieved through the following technical solutions：
A kind of vertical tuned mass damper, TMD for model test, including the top board on top, the base plate of bottom and set
Mass between top board and base plate, described top board and base plate are by setting connecting screw rod connection between them, described
Vertical tuned mass damper, TMD be provided with vertical rectilinear orbit, described rectilinear orbit is fixedly connected with top board and base plate, top
Spring, mass and the slide block slided up and down along rectilinear orbit are respectively equipped between plate and mass, between base plate and mass
Connection, the mass do simple harmonic motion along rectilinear orbit under the action of the spring.
Described connecting screw rod is to be provided with externally threaded cylinder stock, and is furnished with corresponding nut, between top board and base plate
Away from being adjusted by connecting screw rod and nut.
It is symmetrical arranged before and after described rectilinear orbit, between the rectilinear orbit and top board and base plate and described mass
Connecting plate is equipped between slide block.
Described connecting plate is connected by screw on top board, base plate and mass.
The upper and lower surface of the lower surface of described top board, the upper surface of base plate and mass is equipped with location-plate, and this is fixed
Position plate shape is identical with the section of mass, and location-plate is made using politef.
Described location-plate is connected with top board, base plate and mass by screw, and described location-plate is provided with multiple
Location hole of the spring, described spring upper and lower ends adhesion annulus packing ring, can make spring more stable during reciprocating compression, more
More preferably position when changing spring.
The location-plate of described base plate, plate upper surface and mass lower surface is respectively equipped with size identical center circle
Hole, by the center hole, described mass lower surface can place test acceleration transducer.
Described mass is made using the big metal material of density, preferably cast iron.
Described top board upper end is provided with the bolt being connected with longspan structure test model, is furnished with spiral shell on described bolt
It is female.
The design of mass and spring in described vertical tuned mass damper, TMD, specifically using following methods：
A () determines single resistance according to the bearing capacity of local at expected damping effect and longspan structure model suspension
Quality m of Buddhist nun's device massTMD, it is then determined that the size of the size and antivibrator of mass；
B () determines frequency f of longspan structure model to be controlledTMD；
C () is according to formula kTMD=mTMD(2·π·fTMD)2/ N determines the stiffness coefficient of each spring, and wherein N is spring root
Number, determines according to practical situation, N is preferably taken as even number, makes layout of spring symmetrical；
D () is according to formula kTMD=Gd4/(8D3N), select to meet the spring of rigidity and dimensional requirement, wherein, G is spring
Shear moduluses, diameters of the d for spring wire, central diameters of the D for spring, n are active spring coils number；If without such spring, returning to step
Suddenly (3) adjust number of springs N.
This utility model is according to TMD shockproof control principles, there is provided one kind is easily installed, dismantles and can change TMD frequencies at any time
The vertical tuned mass damper, TMD of rate, the antivibrator are closely coupled with main structure by bolt, form an entirety with main structure,
Only mass vertical relative motion on line slide rail, contributes to finding the main contributions vibration shape and corresponding frequencies in structure, when
Main structure is interfered when vibrating, and drives the mass motion in amortisseur.Vertical spiral shell of the tuned mass damper, TMD by top board
Bolt is screwed in the reserved screw of longspan structure model, is then tightened nut, is allowed to fix with longspan structure model.Top board with
Base plate is connected by many connecting screw rods, and mass is connected with the slide block on slide rail, is done vertical reciprocating motion along track, is worked as master
Structure is interfered when vibrating, and drives the mass motion in amortisseur.By resonance principle, as frequency and the master of mass motion
When the frequency of structure motion is close to or is identical, mass reaches resonance state, and in this condition, amortisseur always applies one with master
The reciprocal power of structure motion weakening the motion of main structure, so as to play a protective role to main structure；Come from the angle of energy
Say, the energy transfer of main structure motion so as to reduce the kinergety of main structure, reaches the effect of damping on amortisseur.
Compared with prior art, the vertical tuned mass damper, TMD design of this utility model is succinct, and mass is only in vertically side
To motion, meet the demand of longspan structure model damping test, the effect of multidirectional damping is reached by unidirectional control；Part
Large-scale seismographic station equipment, as performance is limited, it is impossible to for a long time in holding state, this utility model antivibrator additional mass
Little, top board is provided with bolt, makes easy installation and removal；This utility model is designed using location-plate, dismantles can spring Fast Installation,
And position symmetrically accurately, meet the demand of quick regulation in process of the test；The design and installation of this antivibrator mass is smooth straight
On line guide rail, gravity is undertaken by compression spring, during vertical reciprocal high frequency motion, substantially without frictional dissipation, damping
Than being only 0.2% or so, impact of the frictional force to antivibrator frequency can be ignored, it is ensured that the accuracy of frequency modulation.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is main structure diagram of the present utility model；
Schematic diagrams of the Fig. 3 for this utility model spring；
Schematic diagrams of the Fig. 4 for this utility model location-plate；
Schematic diagrams of the Fig. 5 for this utility model base plate；
In figure：1- top boards；11- bolts；12- nuts；2- masses；3- connecting screw rods；4- rectilinear orbits；41- slide blocks；
42- connecting plates；5- springs；51- annulus packing rings；6- location-plates；61- screws；62- location hole of the spring；7- base plates；8- center circles
Hole；
Specific embodiment
This utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of vertical tuned mass damper, TMD for model test, as Figure 1-5, including the top board 1, bottom on top
Base plate 7 and the mass 2 being located between top board 1 and base plate 7,1 upper end of top board is provided with and is connected with longspan structure model
Bolt 11, be furnished with two nuts 12 on bolt 11, mass 2 is square, is made using solid iron, and top board 1 and base plate 7 are logical
Cross four connecting screw rods 3 for setting between them to connect, connecting screw rod 3 is furnished with corresponding to be provided with externally threaded cylinder stock
Nut, top board 1 are adjusted by connecting screw rod 3 and nut with the spacing of base plate 7.Vertical tuned mass damper, TMD is provided with vertically
Rectilinear orbit 4, rectilinear orbit 4 is fixedly connected with top board 1 and base plate 7, between top board 1 and mass 2, base plate 7 and mass 2
Between be respectively equipped with multiple springs 5, rectilinear orbit 4 is provided with the slide block 41 for sliding up and down, and the mass 2 is in the presence of spring 5
Move reciprocatingly along rectilinear orbit 4.Be symmetrical arranged before and after rectilinear orbit 4, between the rectilinear orbit 4 and top board 1 and base plate 7 and
Connecting plate 42 is equipped between mass 2 and slide block 41, connecting plate 42 is connected by screw in top board 1, base plate 7 and mass 2
On.The upper and lower surface of the lower surface, the upper surface of base plate 7 and mass 2 of top board 1 is equipped with location-plate 6,6 shape of location-plate
Shape is identical with the section of mass, and location-plate 6 is made using politef, location-plate 6 by screw and top board 1, base plate 7 with
And mass 2 connects, location-plate 6 is provided with six location hole of the spring 62, and 5 two ends adhesion of spring has annulus packing ring 51, can make bullet
Spring 5 is stuck in location hole 62, makes spring 5 more stable during reciprocating compression, is more preferably positioned when spring is changed.Base plate 1, bottom
The location-plate 6 of 2 lower surface of 1 upper surface of plate and quality board is respectively equipped with size identical center hole 8, by the center hole
8, mass 2 can connecting test acceleration transducer, to test the dynamic trait of the TMD.
Embodiment 2
The design of mass and spring in vertical tuned mass damper, TMD, specifically using following methods：
A () determines single resistance according to the bearing capacity of local at expected damping effect and longspan structure model suspension
Quality m of Buddhist nun's device massTMD, it is then determined that the size of the size and antivibrator of mass；
B () determines frequency f of longspan structure model to be controlledTMD；
C () is according to formula kTMD=mTMD(2·π·fTMD)2/ N determines the stiffness coefficient of each spring, and wherein N is spring root
Number, determines according to practical situation, N is taken as even number, makes layout of spring symmetrical；
D () is according to formula kTMD=Gd4/(8D3N), select to meet the spring of rigidity, size and other requirements, wherein, G is
The shear moduluses of spring, diameters of the d for spring wire, central diameters of the D for spring, n are active spring coils number；If without such spring,
Return to step (3) adjustment number of springs N.
Claims (8)
1. a kind of top board (1) of vertical tuned mass damper, TMD for model test, including top, the base plate (7) of bottom with
And the mass (2) being located between top board (1) and base plate (7), it is characterised in that described top board (1) and base plate (7) are by setting
Connecting screw rod (3) connection between them, described vertical tuned mass damper, TMD are provided with vertical rectilinear orbit (4), institute
The rectilinear orbit (4) stated is fixedly connected with top board (1) and base plate (7), between top board (1) and mass (2), base plate (7) and matter
Spring (5) is respectively equipped between gauge block (2), mass (2) is connected with the slide block (41) slided up and down along rectilinear orbit (4), should
Mass (2) does simple harmonic motion along rectilinear orbit (4) in the presence of spring (5).
2. a kind of vertical tuned mass damper, TMD for model test according to claim 1, it is characterised in that described
Connecting screw rod (3) to be provided with externally threaded cylinder stock, and be furnished with corresponding nut, top board (1) is led to the spacing of base plate (7)
Cross connecting screw rod (3) and nut is adjusted.
3. a kind of vertical tuned mass damper, TMD for model test according to claim 1, it is characterised in that described
Rectilinear orbit (4) before and after be symmetrical arranged, between the rectilinear orbit (4) and top board (1) and base plate (7) and described mass
(2) connecting plate (42) is equipped with and slide block (41) between.
4. a kind of vertical tuned mass damper, TMD for model test according to claim 3, it is characterised in that described
Connecting plate (42) be connected on top board (1), base plate (7) and mass (2) by screw (61).
5. a kind of vertical tuned mass damper, TMD for model test according to claim 1, it is characterised in that described
The upper and lower surface of lower surface, the upper surface of base plate (7) and mass (2) of top board (1) be equipped with location-plate (6), this is fixed
Position plate (6) shape is identical with the section of mass (2).
6. a kind of vertical tuned mass damper, TMD for model test according to claim 5, it is characterised in that described
Location-plate (6) be connected with top board (1), base plate (7) and mass (2) by screw (61), set on described location-plate (6)
There are multiple location hole of the spring (62), described spring (5) upper and lower ends adhesion annulus packing ring (51).
7. a kind of vertical tuned mass damper, TMD for model test according to claim 6, it is characterised in that described
The location-plate (6) of base plate (7), base plate (7) upper surface and mass (2) lower surface be respectively equipped with size identical center circle
Hole (8), by the center hole (8), described mass (2) lower surface can connecting test acceleration transducer.
8. a kind of vertical tuned mass damper, TMD for model test according to claim 1, it is characterised in that described
Top board (1) upper end be provided with the bolt (11) being connected with longspan structure test model, be furnished with spiral shell on described bolt (11)
Female (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040968.8U CN206128342U (en) | 2016-09-07 | 2016-09-07 | A vertical tuned mass damper for model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040968.8U CN206128342U (en) | 2016-09-07 | 2016-09-07 | A vertical tuned mass damper for model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206128342U true CN206128342U (en) | 2017-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621040968.8U Expired - Fee Related CN206128342U (en) | 2016-09-07 | 2016-09-07 | A vertical tuned mass damper for model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206128342U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400996A (en) * | 2016-09-07 | 2017-02-15 | 同济大学 | Vertical frequency adjustment mass damper for model test and design method of vertical frequency adjustment mass damper |
| CN110566616A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | passive variable-rigidity non-smooth vibration absorber |
| CN110566617A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | magnetism-rigidity-based non-smooth vibration absorber |
| CN112857722A (en) * | 2021-01-21 | 2021-05-28 | 中国电建集团华东勘测设计研究院有限公司 | Variable rigidity, mass and damping vibration table test acceleration amplifying device |
| CN113883222A (en) * | 2021-09-16 | 2022-01-04 | 苏州东菱智能减振降噪技术有限公司 | Multi-line spectrum frequency vibration reduction device with adjustable parameters |
-
2016
- 2016-09-07 CN CN201621040968.8U patent/CN206128342U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400996A (en) * | 2016-09-07 | 2017-02-15 | 同济大学 | Vertical frequency adjustment mass damper for model test and design method of vertical frequency adjustment mass damper |
| CN110566616A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | passive variable-rigidity non-smooth vibration absorber |
| CN110566617A (en) * | 2019-09-17 | 2019-12-13 | 天津理工大学 | magnetism-rigidity-based non-smooth vibration absorber |
| CN112857722A (en) * | 2021-01-21 | 2021-05-28 | 中国电建集团华东勘测设计研究院有限公司 | Variable rigidity, mass and damping vibration table test acceleration amplifying device |
| CN113883222A (en) * | 2021-09-16 | 2022-01-04 | 苏州东菱智能减振降噪技术有限公司 | Multi-line spectrum frequency vibration reduction device with adjustable parameters |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20210907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |