CN104018594B - A kind of spherical harmonic quality damper vibration damping control device - Google Patents
A kind of spherical harmonic quality damper vibration damping control device Download PDFInfo
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- CN104018594B CN104018594B CN201410167696.7A CN201410167696A CN104018594B CN 104018594 B CN104018594 B CN 104018594B CN 201410167696 A CN201410167696 A CN 201410167696A CN 104018594 B CN104018594 B CN 104018594B
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Abstract
A kind of spherical harmonic quality damper vibration damping control device, the mass body part that described damping control device comprises base plate part and is slidably matched with it, the weight of mass body part is m, the top of described base plate part is with N number of concave spherical surface, the bottom of described mass body part is with N number of convex spherical being slidably matched with concave spherical surface, described concave spherical surface is identical with the spherical radius R of convex spherical, is provided with sliding friction pair between described convex spherical and concave spherical surface; It is provided with damping system between described mass body part and base plate part. This spherical harmonic quality damper vibration damping control device, by arranging different frictional coefficient, increase additional damping, use for reference single pendulum simple harmonic motion principle simultaneously, replace the elastic element of tradition TMD, design science, compact construction, easy for operation, the problems such as " the cost of manufacture height, need that larger space is installed, structural part easily damages " existing for existing TMD technology can be overcome, it is specially adapted to the control of structural low-frequency vibration.
Description
Technical field
The present invention relates to a kind of bridge and subtract vibration isolation control device, particularly relate to a kind of spherical harmonic quality damper vibration damping control device.
Background technology
Along with the development of civil engineering work cause, the depth-width ratio of high building structure is increasing, the span of bridge structure is also in continuous increase, its result makes structure relatively more and more softr, the natural frequency of structure is in reduction, at high wind, earthquake, vehicle power, under the external effect where such as crowd, structure is easy to cause vibration or rock, rely on the method for traditional raising structural rigidity, all not too reasonable from economic and attractive in appearance angle, although the bearing capacity of structure can meet requirement, but the vibration of structure meeting some position of guiding structure, the weld fatigue damage even harm such as fracture, cause potential safety hazard, in addition, the vibration of structure likely exceedes human comfort tolerance limit, and pedestrian is walked shakiness, causes pedestrian's psychology panic.
A large amount of Research And Engineerings is actual to be shown, structure control technique can effectively increase the damping of structure, reduce the dynamic respons of structure by outside incentive action, improve the vibration resistance energy of structure, the core concept of structural vibration control technology is exactly arrange some control device at some position of structure, when structure produces vibration, these devices can apply the kinematic behavior of one group of control or adjust structure passive or on one's own initiative, thus reduce structural vibration reaction significantly, make it to meet higher safety and functional requirement.
Current structural vibration control can be divided into Passive Control, ACTIVE CONTROL, semi-active control and mixture control, Passive Control does not need extraneous offer energy, main form has base isolation, energy-obsorbing and damping and passive energy dissipation, widely used is as the tuned mass damper (TunedMassDamper inhaling energy Passive Control damping technology, it is called for short TMD), TMD is primarily of quality block, the damping element of dissipative structure vibration energy, the assemblies such as the elastic element of tuning frequency are formed, and elastic element mainly contains spring, pendulum or socle girder steel plate etc.
Tradition adopts spring, pendulum or socle girder steel plate to exist following not enough as the tuned mass damper (TMD) of elastic element:
1. adopt spring as elastic element, there is rigidity ratio and it is easier to design and adjustment, the advantage that requisite space is little, but need extra mechanism or slide rail guiding, under low frequency state, it is desired to spring rigidity is very little, this just makes the processing of mechanism or slide rail guiding mechanism and assembling accuracy requirement very high, TMD could effectively play corresponding effect, and therefore under low frequency state, the TMD cost adopting spring to make is very high;
2. adopt pendulum as elastic element, it is necessary to bigger space, it is difficult to the girder being directly installed on bridge structure is inner;
3. adopt socle girder steel plate suitable as elastic element requisite space, but socle girder Interal fixation end exists stress concentrates, in long term operation, it is easy to fatigue damage.
Summary of the invention
The technical problem to be solved in the present invention is, the cost of manufacture height that exists in structural low-frequency vibration control for existing TMD technology, need that larger space is installed, the structural part easily problem such as damage, it is provided that a kind of spherical harmonic quality damper vibration damping control device, to overcome the deficiency existing for above-mentioned prior art.
In order to solve the problem, the technical solution used in the present invention is: a kind of spherical harmonic quality damper vibration damping control device, the mass body part that described damping control device comprises base plate part and is slidably matched with it, the weight of mass body part is m, the top of described base plate part is with N number of concave spherical surface, the bottom of described mass body part is with N number of convex spherical being slidably matched with concave spherical surface, described concave spherical surface is identical with the spherical radius R of convex spherical, is provided with sliding friction pair between described convex spherical and concave spherical surface; The value of N is any integer between 1��6.
It is provided with damping system between described mass body part and base plate part, the aspheric surface position that described damping system is arranged between mass body part and base plate part, described damping system or be densify fluid deoscillator or for electric eddy-current damping device or for friction damping device.
The value of described mass body part weight m is determined according to the mode mass M size of vibration damping object construction, and its relational expression is: ��=m/M, and �� value is 0.01��0.05;
The value of the spherical radius R of described concave spherical surface and convex spherical is according to the vibration shape model frequency f of vibration damping object construction1Being worth and determine, its relational expression is:
, wherein g is universal gravity constant.
Its further technical scheme is: described sliding friction pair is made up of stainless steel plate and spot contact bearing, the concave spherical surface compacting of described stainless steel plate and base plate part by being welded to connect, described spot contact bearing or be connected by bolt or by the groove convex spherical with mass body part of splicing.
Its separately further technical scheme is: described sliding friction pair is made up of stainless steel plate and polyfluortetraethylene plate, the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, and the convex spherical compacting of described polyfluortetraethylene plate and mass body part is by bolt or rivet interlacement.
Described sliding friction pair is made up of stainless steel plate and three-layer composite board, and the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected.
Described sliding friction pair is made up of polyfluortetraethylene plate and three-layer composite board, the concave spherical surface compacting of described polyfluortetraethylene plate and base plate part by bolt or rivet interlacement, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected.
Owing to adopting technique scheme, the one spherical harmonic quality damper vibration damping control device of the present invention has following useful effect:
1. the spherical harmonic quality damper vibration damping control device of the present invention, what base plate part upper surface and mass body part lower surface were processed into certain radius R coordinates slip sphere, in reference single pendulum simple harmonic motion principle:
,
The convex spherical of mass body part has some cycles (frequency) when base plate part concave spherical surface slides, thus replace the elastic element that tradition TMD uses, play the effect of tuning frequency, not only there is design science, compact construction, advantage easy for operation, the problems such as " the cost of manufacture height, need that larger space is installed, structural part easily damages " existing for existing TMD technology can be overcome simultaneously, it is particularly suitable for the control of low-frequency structure vibration;
2. the one spherical harmonic quality damper vibration damping control device of the present invention adopts mating spherical surfaces sliding type, what base plate part upper surface and mass body part lower surface were processed into certain radius coordinates slip sphere, and dissimilar sliding friction pair is set between two spheres, both the frictional coefficient of slipping plane, the ratio of damping of convenient adjustment TMD can have been reduced, simultaneously again by arranging the friction pair of certain coefficient of sliding friction, increase frictional damping, dissipates vibration energy.
Below in conjunction with drawings and Examples, the technology feature of a kind of spherical harmonic quality damper vibration damping control device of the present invention is further described.
Accompanying drawing explanation
Fig. 1��Fig. 2: the one spherical harmonic quality damper vibration damping control device structural representation of the embodiment of the present invention one:
Fig. 1 is front view, and Fig. 2 is the vertical view of Fig. 1;
Fig. 3��Fig. 4: the one spherical harmonic quality damper vibration damping control device structural representation of the embodiment of the present invention two:
Fig. 3 is front view, and Fig. 4 is the vertical view of Fig. 3;
Fig. 5��Fig. 6: the one spherical harmonic quality damper vibration damping control device structural representation of the embodiment of the present invention three:
Fig. 5 is front view, and Fig. 6 is the vertical view of Fig. 5;
Fig. 7��Fig. 8: the one spherical harmonic quality damper vibration damping control device structural representation of the embodiment of the present invention four:
Fig. 7 is front view, and Fig. 8 is the vertical view of Fig. 7;
Fig. 9��Figure 10: the one spherical harmonic quality damper vibration damping control device structural representation of the embodiment of the present invention four:
Fig. 9 is front view, and Figure 10 is the vertical view of Fig. 9.
In figure
1 base plate part, 2 damping systems, 31 sliding friction pairs (under), 32 sliding friction pairs (on), 4 mass body part.
Embodiment
Embodiment one, such as Fig. 1��Fig. 2, a kind of spherical harmonic quality damper vibration damping control device, the mass body part comprising base plate part and be slidably matched with it, the weight of described mass body part is m, the top of described base plate part is with 1 concave spherical surface, the convex spherical that the bottom of described mass body part is slidably matched with base plate concave spherical surface with 1, described convex spherical is identical with the radius R of concave spherical surface, it is provided with sliding friction pair between described convex spherical and concave spherical surface, described sliding friction pair is made up of stainless steel plate and polyfluortetraethylene plate, the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, the convex spherical compacting of described polyfluortetraethylene plate and mass body part is by bolt or rivet interlacement.
In embodiment one, slip sphere is coordinated by what plate upper surface and mass body part lower surface were 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 one:
1. the number N of the convex spherical bottom the concave spherical surface at the base plate part top described in and mass body part can increase according to practical situation, and the value of General N is any integer between 2��6, naturally it is also possible to expand further;
2. sliding friction pair described in also can be made up of stainless steel plate and three-layer composite board, and the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected;
Described sliding friction pair or be made up of polyfluortetraethylene plate and three-layer composite board, the concave spherical surface compacting of described polyfluortetraethylene plate and base plate part by bolt or rivet interlacement, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected.
Embodiment two
Such as Fig. 3��Fig. 4, a kind of spherical harmonic quality damper vibration damping control device, the mass body part comprising base plate part and be slidably matched with it, the weight of described mass body part is m, the top of described base plate part is with 1 concave spherical surface, the convex spherical that the bottom of described mass body part is slidably matched with base plate concave spherical surface with 1, described convex spherical is identical with the radius R of concave spherical surface, it is provided with sliding friction pair between described convex spherical and concave spherical surface, described sliding friction pair is made up of stainless steel plate and spot contact bearing, the concave spherical surface compacting of described stainless steel plate and base plate part is by being welded to connect, described spot contact bearing or pass through bolt, or be connected by the groove convex spherical with mass body part of splicing.
Being provided with 4 damping systems 2 between described mass body part and base plate part, aspheric surface position that described damping system is arranged between mass body part and base plate part, uniform along concave spherical surface periphery, described damping system is densify fluid deoscillator.
Embodiment three
Such as Fig. 5��Fig. 6, a kind of spherical harmonic quality damper vibration damping control device, the mass body part comprising base plate part and be slidably matched with it, the weight of described mass body part is m, the top of described base plate part is with 2 concave spherical surfaces, the convex spherical that the bottom of described mass body part is slidably matched with base plate concave spherical surface with 2, described convex spherical is identical with the radius R of concave spherical surface, it is provided with sliding friction pair between described convex spherical and concave spherical surface, described sliding friction pair is made up of stainless steel plate and spot contact bearing, the concave spherical surface compacting of described stainless steel plate and base plate part is by being welded to connect, described spot contact bearing or pass through bolt, or be connected by the groove convex spherical with mass body part of splicing.
Being provided with 2 damping systems between described mass body part and base plate part, aspheric surface position that described damping system is arranged between mass body part and base plate part, between two concave spherical surfaces, described damping system is densify fluid deoscillator.
Embodiment four
Such as Fig. 7��Fig. 8, a kind of spherical harmonic quality damper vibration damping control device, the mass body part comprising base plate part and be slidably matched with it, the weight of described mass body part is m, the top of described base plate part is with 3 concave spherical surfaces, the convex spherical that the bottom of described mass body part is slidably matched with base plate concave spherical surface with 3, described convex spherical is identical with the radius R of concave spherical surface, it is provided with sliding friction pair between described convex spherical and concave spherical surface, described sliding friction pair is made up of stainless steel plate and spot contact bearing, the concave spherical surface compacting of described stainless steel plate and base plate part is by being welded to connect, described spot contact bearing or pass through bolt, or be connected by the groove convex spherical with mass body part of splicing.
Being provided with 3 damping systems between described mass body part and base plate part, aspheric surface position that described damping system is arranged between mass body part and base plate part, between three concave spherical surfaces, described damping system is densify fluid deoscillator.
Embodiment five
Such as Fig. 9��Figure 10, a kind of spherical harmonic quality damper vibration damping control device, the mass body part comprising base plate part and be slidably matched with it, the weight of described mass body part is m, the top of described base plate part is with 4 concave spherical surfaces, the convex spherical that the bottom of described mass body part is slidably matched with base plate concave spherical surface with 4, described convex spherical is identical with the radius R of concave spherical surface, it is provided with sliding friction pair between described convex spherical and concave spherical surface, described sliding friction pair is made up of stainless steel plate and spot contact bearing, the concave spherical surface compacting of described stainless steel plate and base plate part is by being welded to connect, described spot contact bearing or pass through bolt, or be connected by the groove convex spherical with mass body part of splicing.
Being provided with 4 damping systems between described mass body part and base plate part, aspheric surface position that described damping system is arranged between mass body part and base plate part, between four concave spherical surfaces, described damping system is densify fluid deoscillator.
Conversion as embodiment two��embodiment five:
1. the number N of the convex spherical bottom the concave spherical surface at the base plate part top described in and mass body part can increase according to practical situation, and the value of General N is any integer between 2��6, naturally it is also possible to expand further;
2. sliding friction pair described in also can be made up of stainless steel plate and polyfluortetraethylene plate, and the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, and the convex spherical compacting of described polyfluortetraethylene plate and mass body part is by bolt or rivet interlacement;
Described sliding friction pair or be made up of stainless steel plate and three-layer composite board, the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected;
Described sliding friction pair or be made up of polyfluortetraethylene plate and three-layer composite board, the concave spherical surface compacting of described polyfluortetraethylene plate and base plate part by bolt or rivet interlacement, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected;
3. the quantity of damping system described in can increase according to practical situation or reduce, and is generally 1��10.
In above-described embodiment one��embodiment five:
The value of described mass body part weight m is determined according to the mode mass M size of vibration damping object construction, and its relational expression is: ��=m/M, and �� value is 0.01��0.05;
The value of the spherical radius R of described concave spherical surface and convex spherical is according to the vibration shape model frequency f of vibration damping object construction1Being worth and determine, its relational expression is:
, wherein g is universal gravity constant.
Install
The maximum amplitude place that a kind of spherical harmonic quality damper vibration damping control device of the present invention is arranged on high building structure or bridge structure, or close to maximum amplitude place, by the mode such as bolt or welding, base plate part is connected with fastening structure.
Principle of work
What base plate part upper surface was processed into certain radius R with mass body part lower surface coordinates slip sphere, use for reference single pendulum simple harmonic motion principle: the convex spherical of mass body part has some cycles (frequency) when base plate part concave spherical surface slides, play the effect of tuning frequency, thus replace the elastic element that tradition TMD uses.
Claims (5)
1. a spherical harmonic quality damper vibration damping control device, the mass body part that described damping control device comprises base plate part and is slidably matched with it, the weight of mass body part is m, the top of described base plate part is with N number of concave spherical surface, the bottom of described mass body part is with N number of convex spherical being slidably matched with concave spherical surface, described concave spherical surface is identical with the spherical radius R of convex spherical, is provided with sliding friction pair between described convex spherical and concave spherical surface; The value of N is any integer between 1��6;
It is provided with damping system between described mass body part and base plate part, the aspheric surface position that described damping system is arranged between mass body part and base plate part, described damping system or be densify fluid deoscillator or for electric eddy-current damping device or for friction damping device;
It is characterized in that: the value of described mass body part weight m is determined according to the mode mass M size of vibration damping object construction, and its relational expression is: ��=m/M, and �� value is 0.01��0.05;
The value of the spherical radius R of described concave spherical surface and convex spherical is according to the vibration shape model frequency f of vibration damping object construction1Being worth and determine, its relational expression is:
Wherein g is universal gravity constant.
2. a kind of spherical harmonic quality damper vibration damping control device according to claim 1, it is characterized in that: described sliding friction pair is made up of stainless steel plate and spot contact bearing, the concave spherical surface compacting of described stainless steel plate and base plate part by being welded to connect, described spot contact bearing or be connected by bolt or by the groove convex spherical with mass body part of splicing.
3. a kind of spherical harmonic quality damper vibration damping control device according to claim 1, it is characterized in that: described sliding friction pair is made up of stainless steel plate and polyfluortetraethylene plate, the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, and the convex spherical compacting of described polyfluortetraethylene plate and mass body part is by bolt or rivet interlacement.
4. a kind of spherical harmonic quality damper vibration damping control device according to claim 1, it is characterized in that: described sliding friction pair is made up of stainless steel plate and three-layer composite board, the concave spherical surface compacting of described stainless steel plate and base plate part is welded to connect, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected.
5. a kind of spherical harmonic quality damper vibration damping control device according to claim 1, it is characterized in that: described sliding friction pair is made up of polyfluortetraethylene plate and three-layer composite board, the concave spherical surface compacting of described polyfluortetraethylene plate and base plate part by bolt or rivet interlacement, the convex spherical compacting of described three-layer composite board and mass body part or connect by bolt or rivet or be weldingly connected.
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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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| CN105889380B (en) * | 2016-06-13 | 2017-10-31 | 北京航空航天大学 | A kind of current vortex rotates variation rigidity damper |
| CN106381934B (en) * | 2016-10-26 | 2019-01-04 | 清华大学 | Three-dimensional shock isolation support |
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| TR201920153A2 (en) * | 2019-12-13 | 2021-06-21 | Ondokuz Mayis Ueniversitesi Rektoerluek | Structural seismic isolation system (YSYS). |
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| RU2338828C2 (en) * | 2006-09-27 | 2008-11-20 | Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" | Bridge bearing |
| CN201730046U (en) * | 2010-02-11 | 2011-02-02 | 柳州东方工程橡胶制品有限公司 | Spherical surface support |
| KR101350883B1 (en) * | 2013-04-12 | 2014-01-14 | (주)알티에스 | Isolator using engineering plastic and sliding parts for the same |
| KR101351548B1 (en) * | 2013-06-13 | 2014-01-24 | (주)알티에스 | Spherical block assembly and isolator using the assembly |
| CN203905194U (en) * | 2014-04-24 | 2014-10-29 | 柳州东方工程橡胶制品有限公司 | Vibration reduction control device for spherical tuned mass damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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