CN104018594A - Spherical surface TMD shock absorption control device - Google Patents
Spherical surface TMD shock absorption control device Download PDFInfo
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- CN104018594A CN104018594A CN201410167696.7A CN201410167696A CN104018594A CN 104018594 A CN104018594 A CN 104018594A CN 201410167696 A CN201410167696 A CN 201410167696A CN 104018594 A CN104018594 A CN 104018594A
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Abstract
The invention provides a spherical surface TMD (Turning Mass Damper) shock absorption control device, which comprises a bottom plate component and a mass block component glidingly matched with the bottom plate component, wherein the weight of the mass block component is m; the top of the bottom plate component is provided with N concave spherical surfaces; the bottom of the mass block component is provided with N convex spherical surfaces glidingly matched with the concave spherical surfaces; the concave spherical surfaces and the convex spherical surfaces have the identical spherical surface radius R; a sliding friction pair is arranged between the convex spherical surfaces and the concave spherical surfaces; and a damping device is arranged between the mass block component and the bottom plate component. The spherical surface TMD shock absorption control device has the advantages that the additional damping can be increased through setting different friction factors; meanwhile, through a single pendulum simple harmonic moving principle, an elastic element of a traditional TMD is replaced; the design is scientific; the structure is compact; the operation and the use are convenient; the problems that for the existing TMD technology, the manufacturing cost is high, a greater installation space is needed, a structural element can be easily damaged, and the like can be solved; and the spherical surface TMD shock absorption control device is particularly applicable to the control of low-frequency vibration of a structure.
Description
Technical field
The present invention relates to a kind of bridge and subtract vibration isolation control device, relate in particular to a kind of spherical harmonic quality damper vibration damping control device.
Background technology
Along with the development of civil engineering cause, the depth-width ratio of high building structure is increasing, the span of bridge construction is also in continuous increase, its result makes structure relatively more and more softr, the natural frequency of structure is reducing, at high wind, earthquake, vehicle power, under the external effect where such as crowd, structure is easy to cause vibration or rocks, rely on the method for traditional raising rigidity of structure, all not too reasonable from economic and attractive in appearance angle, although the bearing capacity of structure can meet the demands, but some position of vibration meeting guiding structure of structure, weld fatigue damage even fracture waits harm, cause potential safety hazard, in addition, the vibration of structure likely exceedes human comfort tenability limit, makes pedestrian's shakiness of walking, and causes that pedestrian's psychology is panic.
A large amount of Research And Engineerings is actual to be shown, structure control technology can effectively increase the damping of structure, reducing structure reacted by the vibration of external drive effect, improve the resistance to shock of structure, the core concept of structural vibration control technology is exactly, at some position of structure, some control device are set, in the time that structure generation vibrates, these devices can apply passive or on one's own initiative one group of control or adjust the dynamic characteristics of structure, thereby reduce significantly structural vibration reaction, make it to meet higher safety and functional requirement.
Structural vibration control can be divided into Passive Control, ACTIVE CONTROL, half ACTIVE CONTROL and mix and control at present, Passive Control does not need the external world that energy is provided, principal mode has base isolation, energy-obsorbing and damping and passive energy dissipation, widely used is tuned mass damper (Tuned Mass Damper as energy-absorbing Passive Control damping technology, be called for short TMD), TMD is mainly by mass, the damping element of dissipative structure vibrational energy, the module compositions such as the flexible member of tuned frequency, flexible member mainly contains spring, pendulum or semi girder steel plate etc.
It is following not enough that tradition adopts spring, pendulum or semi girder steel plate to exist as the tuned mass damper (TMD) of flexible member:
1. adopt spring as flexible member, having ratio of rigidity is easier to design and adjusts, the advantage that requisite space is little, but need extra mechanical device or slide rail guiding, under low frequency state, require spring rate very little, this just makes the processing of mechanical device or slide rail guiding mechanism and assembly precision require very high, TMD could effectively play corresponding effect, and therefore, under low frequency state, the TMD cost that adopts spring to make is very high;
2. adopt pendulum as flexible member, need larger space, be difficult to be directly installed on the girder inside of bridge construction;
3. adopt semi girder steel plate suitable as flexible member requisite space, but semi girder steel plate fixed end exist stress to concentrate, and in long-term work, is easy to occur fatigue damage.
Summary of the invention
The technical problem to be solved in the present invention is, the cost of manufacture that exists in structural low-frequency vibration control for existing TMD technology is high, need that larger space is installed, the easily problem such as damage of structural member, provides a kind of spherical harmonic quality damper vibration damping control device, to overcome the existing deficiency of above-mentioned prior art.
For addressing the above problem the technical solution used in the present invention be: a kind of spherical harmonic quality damper vibration damping control device, the mass parts that described damping control device comprises base plate part and is slidably matched with it, the weight of mass parts is m, the top of described base plate part is with N concave spherical surface, the bottom of described mass parts is with N the protruding sphere being slidably matched with concave spherical surface, and the spherical radius R of described concave spherical surface and protruding sphere is identical
,between described protruding sphere and concave spherical surface, be provided with sliding friction pair; The value of N is the arbitrary integer between 1～6.
Its further technical scheme is: between described mass parts and base plate part, be provided with damping unit, described damping unit is arranged on the aspheric surface position between mass parts and base plate part, described damping unit or be Effects of Viscous Fluid Damper or for electric eddy-current damping device or for friction damping device.
Its further technical scheme be: the value of described mass component weight m is determined according to the modal mass M size of vibration damping object construction, and its relational expression is: μ=m/M, μ value is 0.01～0.05;
The value of the spherical radius R of described concave spherical surface and protruding sphere is according to the vibration shape model frequency f of vibration damping object construction
1be worth and determine, its relational expression is
:
, wherein g is acceleration of gravity.
Its another further technical scheme is: described sliding friction pair is made up of corrosion resistant plate and ball bearing, the concave spherical surface compacting of described corrosion resistant plate and base plate part is by being welded to connect, described ball bearing or splice and be connected with the protruding sphere of mass parts by bolt or by groove.
Its another further technical scheme is: described sliding friction pair is made up of corrosion resistant plate and polyfluortetraethylene plate, the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, and described polyfluortetraethylene plate is connected by bolt or rivet with the protruding sphere compacting of mass parts.
Described sliding friction pair is made up of corrosion resistant plate and three-layer composite board, and the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect.
Described sliding friction pair is made up of polyfluortetraethylene plate and three-layer composite board, described polyfluortetraethylene plate is connected by bolt or rivet with the concave spherical surface compacting of base plate part, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect.
Owing to adopting technique scheme, a kind of spherical harmonic quality damper vibration damping control device of the present invention has following beneficial effect:
1. the present invention's spherical harmonic quality damper vibration damping control device, what base plate part upper surface and mass parts soffit were processed into certain radius R coordinates slip sphere, is using for reference single pendulum simple harmonic motion principle:
，
The protruding sphere of mass parts has some cycles (frequency) in the time that base plate part concave spherical surface slides, thereby the flexible member that replaces traditional TMD to use, play the effect of tuned frequency, not only there is design science, compact conformation, advantage easy for operation, can overcome the problems such as existing TMD technology existing " cost of manufacture is high, need that larger space is installed, structural member easily damage " simultaneously, be particularly suitable for the control of low-frequency structure vibration;
2. a kind of spherical harmonic quality damper vibration damping control device of the present invention adopts sphere to coordinate sliding type, what base plate part upper surface and mass parts soffit were processed into certain radius coordinates slip sphere, and dissimilar sliding friction pair is set between two spheres, both the friction factor of slide plane, the damped coefficient of the convenient TMD of adjustment can have been reduced, simultaneously again can be by the friction pair of certain coefficient of sliding friction be set, increase frictional damping, dissipates vibration energy.
The technical characterictic of a kind of spherical harmonic quality damper vibration damping control device below in conjunction with drawings and Examples to the present invention is further described.
Brief description of the drawings
Fig. 1～Fig. 2: the embodiment of the present invention one it
oneplant spherical harmonic quality damper vibration damping control device structural representation:
Fig. 1 is front view, the top view that Fig. 2 is Fig. 1;
Fig. 3～Fig. 4: the embodiment of the present invention two it
oneplant spherical harmonic quality damper vibration damping control device structural representation:
Fig. 3 is front view, the top view that Fig. 4 is Fig. 3;
Fig. 5～Fig. 6: the embodiment of the present invention three it
oneplant spherical harmonic quality damper vibration damping control device structural representation:
Fig. 5 is front view, the top view that Fig. 6 is Fig. 5;
Fig. 7～Fig. 8: the embodiment of the present invention four it
oneplant spherical harmonic quality damper vibration damping control device structural representation:
Fig. 7 is front view, the top view that Fig. 8 is Fig. 7;
Fig. 9～Figure 10: the embodiment of the present invention four it
oneplant spherical harmonic quality damper vibration damping control device structural representation:
Fig. 9 is front view, the top view that Figure 10 is Fig. 9.
In figure
1-base plate part, 2-damping unit, 31-sliding friction pair (under), 32-sliding friction pair (on), 4-mass parts.
Detailed description of the invention
embodiment mono-, as Fig. 1～Fig. 2, a kind of spherical harmonic quality damper vibration damping control device, the mass parts that comprise base plate part and be slidably matched with it, the weight of described mass parts is m, the top of described base plate part is with 1 concave spherical surface, the bottom of described mass parts is with 1 protruding sphere being slidably matched with base plate concave spherical surface, described protruding sphere is identical with the radius R of concave spherical surface, between described protruding sphere and concave spherical surface, be provided with sliding friction pair, described sliding friction pair is made up of corrosion resistant plate and polyfluortetraethylene plate, the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, described polyfluortetraethylene plate is connected by bolt or rivet with the protruding sphere compacting of mass parts.
In embodiment mono-, coordinate slip sphere by what plate upper surface and mass parts soffit are processed into certain radius, and dissimilar sliding friction pair is set between two spheres, the friction pair of setting is processed into certain coefficient of sliding friction, by frictional damping dissipates vibration energy, to replace additional damping device.
Conversion as embodiment mono-:
1. the number N of the concave spherical surface at the base plate part top described in and the protruding sphere of mass feature bottom can increase according to actual conditions, and the value of General N is the arbitrary integer between 2～6, can certainly further expand;
2. described in, sliding friction pair also can be made up of corrosion resistant plate and three-layer composite board, and the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect;
Described sliding friction pair or formed by polyfluortetraethylene plate and three-layer composite board, described polyfluortetraethylene plate is connected by bolt or rivet with the concave spherical surface compacting of base plate part, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect.
embodiment bis-
As Fig. 3～Fig. 4, a kind of spherical harmonic quality damper vibration damping control device, the mass parts that comprise base plate part and be slidably matched with it, the weight of described mass parts is m, the top of described base plate part is with 1 concave spherical surface, the bottom of described mass parts is with 1 protruding sphere being slidably matched with base plate concave spherical surface, described protruding sphere is identical with the radius R of concave spherical surface, between described protruding sphere and concave spherical surface, be provided with sliding friction pair, described sliding friction pair is made up of corrosion resistant plate and ball bearing, the concave spherical surface compacting of described corrosion resistant plate and base plate part is by being welded to connect, described ball bearing or pass through bolt, or splice and be connected with the protruding sphere of mass parts by groove.
Between described mass parts and base plate part, be provided with 4 damping units 2, described damping unit is arranged on aspheric surface position between mass parts and base plate part, uniform along concave spherical surface periphery, and described damping unit is Effects of Viscous Fluid Damper.
embodiment tri-
As Fig. 5～Fig. 6, a kind of spherical harmonic quality damper vibration damping control device, the mass parts that comprise base plate part and be slidably matched with it, the weight of described mass parts is m, the top of described base plate part is with 2 concave spherical surfaces, the bottom of described mass parts is with 2 protruding spheres that are slidably matched with base plate concave spherical surface, described protruding sphere is identical with the radius R of concave spherical surface, between described protruding sphere and concave spherical surface, be provided with sliding friction pair, described sliding friction pair is made up of corrosion resistant plate and ball bearing, the concave spherical surface compacting of described corrosion resistant plate and base plate part is by being welded to connect, described ball bearing or pass through bolt, or splice and be connected with the protruding sphere of mass parts by groove.
Between described mass parts and base plate part, be provided with 2 damping units, described damping unit is arranged on aspheric surface position between mass parts and base plate part, between two concave spherical surfaces, and described damping unit is Effects of Viscous Fluid Damper.
embodiment tetra-
As Fig. 7～Fig. 8, a kind of spherical harmonic quality damper vibration damping control device, the mass parts that comprise base plate part and be slidably matched with it, the weight of described mass parts is m, the top of described base plate part is with 3 concave spherical surfaces, the bottom of described mass parts is with 3 protruding spheres that are slidably matched with base plate concave spherical surface, described protruding sphere is identical with the radius R of concave spherical surface, between described protruding sphere and concave spherical surface, be provided with sliding friction pair, described sliding friction pair is made up of corrosion resistant plate and ball bearing, the concave spherical surface compacting of described corrosion resistant plate and base plate part is by being welded to connect, described ball bearing or pass through bolt, or splice and be connected with the protruding sphere of mass parts by groove.
Between described mass parts and base plate part, be provided with 3 damping units, described damping unit is arranged on aspheric surface position between mass parts and base plate part, between three concave spherical surfaces, and described damping unit is Effects of Viscous Fluid Damper.
embodiment five
As Fig. 9～Figure 10, a kind of spherical harmonic quality damper vibration damping control device, the mass parts that comprise base plate part and be slidably matched with it, the weight of described mass parts is m, the top of described base plate part is with 4 concave spherical surfaces, the bottom of described mass parts is with 4 protruding spheres that are slidably matched with base plate concave spherical surface, described protruding sphere is identical with the radius R of concave spherical surface, between described protruding sphere and concave spherical surface, be provided with sliding friction pair, described sliding friction pair is made up of corrosion resistant plate and ball bearing, the concave spherical surface compacting of described corrosion resistant plate and base plate part is by being welded to connect, described ball bearing or pass through bolt, or splice and be connected with the protruding sphere of mass parts by groove.
Between described mass parts and base plate part, be provided with 4 damping units, described damping unit is arranged on aspheric surface position between mass parts and base plate part, between four concave spherical surfaces, and described damping unit is Effects of Viscous Fluid Damper.
Conversion as embodiment bis-～embodiment five:
1. the number N of the concave spherical surface at the base plate part top described in and the protruding sphere of mass feature bottom can increase according to actual conditions, and the value of General N is the arbitrary integer between 2～6, can certainly further expand;
2. described in, sliding friction pair also can be made up of corrosion resistant plate and polyfluortetraethylene plate, and the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, and described polyfluortetraethylene plate is connected by bolt or rivet with the protruding sphere compacting of mass parts;
Described sliding friction pair or formed by corrosion resistant plate and three-layer composite board, the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect;
Described sliding friction pair or formed by polyfluortetraethylene plate and three-layer composite board, described polyfluortetraethylene plate is connected by bolt or rivet with the concave spherical surface compacting of base plate part, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect;
3. described in, the quantity of damping unit can increase or reduce according to actual conditions, is generally 1～10.
In above-described embodiment one～embodiment five:
The value of described mass component weight m is determined according to the modal mass M size of vibration damping object construction, and its relational expression is: μ=m/M, and μ value is 0.01～0.05;
The value of the spherical radius R of described concave spherical surface and protruding sphere is according to the vibration shape model frequency f of vibration damping object construction
1be worth and determine, its relational expression is:
, wherein g is acceleration of gravity.
install
A kind of spherical harmonic quality damper vibration damping control device of the present invention is arranged on to the peak swing place of high building structure or bridge construction, or approaches peak swing place, by the mode such as bolt or welding, base plate part is connected with fastening structure.
operating principle
What base plate part upper surface and mass parts soffit were processed into certain radius R coordinates slip sphere, use for reference single pendulum simple harmonic motion principle: the protruding sphere of mass parts has some cycles (frequency) in the time that base plate part concave spherical surface slides, play the effect of tuned frequency, thus the flexible member that replaces traditional TMD to use.
Claims (7)
1. a spherical harmonic quality damper vibration damping control device, it is characterized in that: the mass parts that described damping control device comprises base plate part and is slidably matched with it, the weight of mass parts is m, the top of described base plate part is with N concave spherical surface, the bottom of described mass parts is with N the protruding sphere being slidably matched with concave spherical surface, and the spherical radius R of described concave spherical surface and protruding sphere is identical
,between described protruding sphere and concave spherical surface, be provided with sliding friction pair; The value of N is the arbitrary integer between 1～6.
2. a kind of spherical harmonic quality damper vibration damping control device according to claim 1, it is characterized in that: between described mass parts and base plate part, be provided with damping unit, described damping unit is arranged on the aspheric surface position between mass parts and base plate part, described damping unit or be Effects of Viscous Fluid Damper or for electric eddy-current damping device or for friction damping device.
3. a kind of spherical harmonic quality damper vibration damping control device according to claim 1 and 2, it is characterized in that: the value of described mass component weight m is determined according to the modal mass M size of vibration damping object construction, its relational expression is: μ=m/M, and μ value is 0.01～0.05;
The value of the spherical radius R of described concave spherical surface and protruding sphere is according to the vibration shape model frequency f of vibration damping object construction
1be worth and determine, its relational expression is:
, wherein g is acceleration of gravity.
4. a kind of spherical harmonic quality damper vibration damping control device according to claim 3, it is characterized in that: described sliding friction pair is made up of corrosion resistant plate and ball bearing, the concave spherical surface compacting of described corrosion resistant plate and base plate part is by being welded to connect, described ball bearing or splice and be connected with the protruding sphere of mass parts by bolt or by groove.
5. a kind of spherical harmonic quality damper vibration damping control device according to claim 3, it is characterized in that: described sliding friction pair is made up of corrosion resistant plate and polyfluortetraethylene plate, the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, and described polyfluortetraethylene plate is connected by bolt or rivet with the protruding sphere compacting of mass parts.
6. a kind of spherical harmonic quality damper vibration damping control device according to claim 3, it is characterized in that: described sliding friction pair is made up of corrosion resistant plate and three-layer composite board, the concave spherical surface compacting of described corrosion resistant plate and base plate part is welded to connect, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect.
7. a kind of spherical harmonic quality damper vibration damping control device according to claim 3, it is characterized in that: described sliding friction pair is made up of polyfluortetraethylene plate and three-layer composite board, described polyfluortetraethylene plate is connected by bolt or rivet with the concave spherical surface compacting of base plate part, the protruding sphere compacting of described three-layer composite board and mass parts or by bolt or rivet or be weldingly connected and connect.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105889380A (en) * | 2016-06-13 | 2016-08-24 | 北京航空航天大学 | Electric-eddy-current rotation-transformation rigidity damper |
| CN106381934A (en) * | 2016-10-26 | 2017-02-08 | 清华大学 | Three-dimensional shock insulation supporting seat |
| CN109083974A (en) * | 2018-11-06 | 2018-12-25 | 河海大学 | A kind of intelligent frequency modulation vibration abatement of fluid reservoir |
| WO2021118512A1 (en) * | 2019-12-13 | 2021-06-17 | Ondokuz Mayis Universitesi Rektorluk | Structural seismic isolation system |
| CN114439874A (en) * | 2022-01-04 | 2022-05-06 | 上海电气风电集团股份有限公司 | Mass damper and wind driven generator |
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| US9926972B2 (en) | 2015-10-16 | 2018-03-27 | Roller Bearing Company Of America, Inc. | Spheroidial joint for column support in a tuned mass damper system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105889380A (en) * | 2016-06-13 | 2016-08-24 | 北京航空航天大学 | Electric-eddy-current rotation-transformation rigidity damper |
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| CN109083974B (en) * | 2018-11-06 | 2020-05-22 | 河海大学 | Intelligent frequency modulation shock-proof device for liquid storage tank |
| WO2021118512A1 (en) * | 2019-12-13 | 2021-06-17 | Ondokuz Mayis Universitesi Rektorluk | Structural seismic isolation system |
| CN114439874A (en) * | 2022-01-04 | 2022-05-06 | 上海电气风电集团股份有限公司 | Mass damper and wind driven generator |
| CN114439874B (en) * | 2022-01-04 | 2024-06-04 | 上海电气风电集团股份有限公司 | Mass damper and wind driven generator |
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