CN105672514A - Vortex vibration energy consumption type tuned liquid damper - Google Patents
Vortex vibration energy consumption type tuned liquid damper Download PDFInfo
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- CN105672514A CN105672514A CN201610134667.XA CN201610134667A CN105672514A CN 105672514 A CN105672514 A CN 105672514A CN 201610134667 A CN201610134667 A CN 201610134667A CN 105672514 A CN105672514 A CN 105672514A
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- damper
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- tld
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a vortex vibration energy consumption type tuned liquid damper which comprises a water tank, tuned liquid, a long and thin elastomer and a connecting node.The water tank is firmly connected with a body structure.The long and thin elastomer is connected to the interior of the water tank through the connecting node.The tuned liquid is injected into the water tank according to the designed liquid level.The structure vibrates so that the tuned liquid in the water tank can vibrate at a certain frequency; within the motion speed range of the tuned liquid, the long and thin elastomer is subjected to a vortex-induced resonance, large-amplitude transverse vibration is generated, the vibration energy of the liquid is dissipated, and damping is provided for the tuned liquid damper.The vortex vibration energy consumption type tuned liquid damper has the advantages of being simple in structure, good in liquid damping energy consumption mode, stable in vibration reduction effect and the like.
Description
Technical field
The present invention is a kind of tuning vibration absorber for engineering structure, and the dynamic effect caused for geological process or wind load controls, and belongs to the technical field that building structure passive energy dissipation controls, and is specifically related to a kind of whirlpool and shakes consuming type tuned liquid damper, TLD, tuned sloshing damper.
Background technology
In recent years, passive control technology is more and more is applied to civil engineering structure response control under dynamic load (wind load, geological process etc.) acts on. In passive control, tuned liquid damper, TLD, tuned sloshing damper (TunedLiquidDamper is called for short TLD) is that a kind of effective structural vibration reduction controls device, and it is that the dynamic horizontal pressure utilizing the liquid in fixing water tank to produce in the process of rocking is to provide damping force. Generation is vibrated by TLD under earthquake or wind action, thus causing rocking of liquid in TLD, and forms wave at liquid surface. It is poor that TLD tank wall is produced dynamic pressure by the liquid rocked and wave, and liquid motion also will cause inertia force simultaneously. The damping effect of TLD is defined by dynamic pressure difference and liquid inertia power. TLD device has cost installation low, easy, safeguards less, automatically activates the advantages such as performance coupling modulation frequency good, easy. Tuned liquid damper, TLD, tuned sloshing damper is broadly divided into two classes. The first kind is the water tank of rectangle, cylinder or annular, and Equations of The Second Kind is U-tube shape water tank. Usually said TLD refers to the first kind, and Equations of The Second Kind is referred to as frequency modulation liquid column antivibrator (TunedLiquidColumnsDamper is called for short TLCD).
But, whether in TLD or TLCD, the damping of liquid self is relatively small, and this will cause that the liquid in water tank excessively rocks, thus affecting the tuned damper effectiveness in vibration suppression to agent structure. For this, the demand that numerous researcheres increase self damping for Tuned Liquid proposes substantial amounts of method: 1) conventional method is that arranging of mentioning in specialized work installs bluff body (flow around bluff bodies) and interpolation particulate matter mixture (change characteristics of liquids, simultaneously utilize particles collision) in aperture (hole power consumption), water tank; 2) up-to-date certain methods include arranging in water tank bluff body make liquid vortex street stream power consumption (CN203603293U), porous damping piece (CN203499044U, CN103590503A) be set, mixing number of mechanisms (CN103541458A, CN103291818) etc.The above major part is to make use of the different flow pattern of fluid self (hole consumes energy, streams power consumption etc.) to carry out consumed energy, small part make use of short grained collision dissipative part energy, but carry out dissipation energy merely with liquid and a small amount of particles collision, relatively inefficient.
Therefore, the liquid sloshing energy in tuned liquid damper, TLD, tuned sloshing damper is delivered on other solids, utilizes the solid of height damping to consume energy and there is certain meaning. This patent utilizes elongate resilient pipe that the principle of Vortex-excited vibration easily occurs in working fluid, develop a kind of tuned liquid damper, TLD, tuned sloshing damper utilizing Vortex-excited vibration to consume energy, improve liquid sloshing damping in tuned liquid damper, TLD, tuned sloshing damper, thus improving the tuned liquid damper, TLD, tuned sloshing damper effectiveness in vibration suppression to agent structure.
Summary of the invention
It is an object of the invention to overcome prior art Problems existing, the tuned liquid damper, TLD, tuned sloshing damper that a kind of Vortex-excited vibration utilizing elongated cylindrical elastomer in working fluid consumes energy is provided, in this device liquid sloshing damping can increase as required, it is possible to increase tuned liquid damper, TLD, tuned sloshing damper to civil engineering structure dynamic load (wind, earthquake etc.) act under effectiveness in vibration suppression and robustness.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is achieved through the following technical solutions:
Whirlpool shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, and including water tank, frequency modulation liquid, elongated resilient body and connect node, described water tank is connected node connection with described elongated resilient body by described, is marked with described frequency modulation liquid in described water tank.
Further, described water tank has two kinds of forms respectively tuned liquid damper, TLD, tuned sloshing damper TLD form and frequency modulation column damper TLCD.
Further, described elongated resilient body is that circular cross-section includes two kinds of embodiments, and wherein the first is made up of waterproof case, stiffness layer and damping layer, and the second is made up of waterproof case, stiffness layer, damping spring and mass ball.
Preferably, the first elongated resilient body described and the frequency modulation liquid significantly oscillation crosswise in Vortex-excited vibration situation provides the damping of described frequency modulation liquid, and the vibration of described elongated resilient body is then provided damping automatically to decay by described damping layer; The rigidity of described elongated resilient body is provided by described stiffness layer, connect node can be hinged, just connect or semi-rigid joint, the natural frequency of vibration of elongated resilient body described in described stiffness layer and described connection node joint effect, the flow velocity that this natural frequency of vibration and described frequency modulation liquid are caused by structural vibration meets Vortex-excited vibration requirement.
Further, the oscillator that described the second elongated resilient body significantly transverse vibration energy is made up of described damping spring and described mass ball dissipates.
Beneficial effects of the present invention:
The present invention has simple structure, good damping result, the fluid damping power consumption advantages such as mode is good. First, as a kind of frequency adjusting damping device, the present invention can effectively control civil engineering structure response under dynamic load function, protects agent structure. Simultaneously, the elongated resilient body violent oscillatory motion deformation when liquid sloshing is utilized to carry out the energy in dispersing liquid, high damping material that energy efficiency is high (plumbous etc.) or high damping structure (oscillator) is made to instead of liquid self power consumption of poor efficiency, the damping making Tuned Liquid can regulate in a wider context, adds robustness and the scope of application of tuned liquid damper control.
Accompanying drawing explanation
Fig. 1 is that whirlpool of the present invention shakes the schematic diagram of frequency modulation column damper (TLCD) scheme of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 2 is that whirlpool of the present invention shakes the frequency modulation column damper 1-1 cross-sectional view of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 3 (a) shakes for whirlpool of the present invention the frequency modulation column damper 2-2 cross-section structure schematic detail view of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 3 (b) shakes for whirlpool of the present invention the frequency modulation column damper 3-3 cross-section structure schematic detail view of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 4 (a) shakes for whirlpool of the present invention the first structural scheme of elongated resilient body of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 4 (b) shakes for whirlpool of the present invention elongated resilient body the second structural scheme of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 5 is that whirlpool of the present invention shakes the schematic diagram of tuned liquid damper, TLD, tuned sloshing damper (TLD) scheme of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 6 is that whirlpool of the present invention shakes the tuned liquid damper, TLD, tuned sloshing damper 1-1 cross-sectional view of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 7 (a) is that whirlpool of the present invention shakes the tuned liquid damper, TLD, tuned sloshing damper 2-2 cross-section structure schematic detail view of consuming type tuned liquid damper, TLD, tuned sloshing damper;
Fig. 7 (b) is that whirlpool of the present invention shakes the tuned liquid damper, TLD, tuned sloshing damper 3-3 cross-section structure schematic detail view of consuming type tuned liquid damper, TLD, tuned sloshing damper.
Number in the figure illustrates: 1, water tank, 2, frequency modulation liquid, 3, elongated resilient body, 31, waterproof case, 32, stiffness layer, 331, damping layer, 332, damping spring, 34, mass ball, 4, connect node.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
With reference to shown in Fig. 1-Fig. 7, whirlpool shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, including water tank 1, frequency modulation liquid 2, elongated resilient body 3 and connection node 4, described water tank 1 is connected by the described node 4 that is connected with described elongated resilient body 3, is marked with described frequency modulation liquid 2 in described water tank 1.
Further, described water tank 1 has two kinds of forms respectively tuned liquid damper, TLD, tuned sloshing damper TLD form and frequency modulation column damper TLCD, adopts Plate Welding, and size and dimension designs according to the shock attenuation needs of agent structure, it is possible to for various ways such as cylinder, cuboids.
Further, described elongated resilient body 3 is that circular cross-section includes two kinds of embodiments, wherein the first is made up of waterproof case 31, stiffness layer 32 and damping layer 331, the second is made up of waterproof case 31, stiffness layer 32, damping spring 332 and mass ball 34, described stiffness layer 32 provides rigidity for described elongated resilient body 3, can select steel, aluminium etc. as required; Described damping layer 331 provides the damping of dissipation energy for elastomer, can be selected for the Energy dissipating material such as lead, high-damping rubber, it is possible to install multiple small-sized tuning oscillator and be made up of described mass ball 34 and damping spring 33.
Preferably, the first elongated resilient body 3 described provides the damping of described frequency modulation liquid 2 with the frequency modulation liquid 2 significantly oscillation crosswise in Vortex-excited vibration situation, and the vibration of described elongated resilient body 3 is then provided damping automatically to decay by described damping layer 331; The rigidity of described elongated resilient body 3 is provided by described stiffness layer 32, connect node 4 can be hinged, just connect or semi-rigid joint, the natural frequency of vibration of elongated resilient body 3 described in described stiffness layer 32 and described connection node 4 joint effect, the flow velocity that this natural frequency of vibration and described frequency modulation liquid 2 are caused by structural vibration meets Vortex-excited vibration requirement.
Further, the oscillator that described the second elongated resilient body 3 significantly transverse vibration energy is made up of described damping spring 332 and described mass ball 34 dissipates.
Further, described frequency modulation liquid 2 can be the various liquid meeting designing requirement such as water, copper sulfate, viscous liquid.
Further, described connection node can according to rigidity requirement be designed as hinged, just connect or semi-rigid joint.
Principles of the invention:
The vibration of agent structure causes the vibration of liquid in coupled water tank 1, and owing to when characteristic frequency is rocked, in water tank 1, flow rate of liquid is constant, under this flow velocity, horizontal Vortex-excited vibration by a relatively large margin occurs the circular cross-section elongated resilient body 3 of particular design. The energetic portions of such structural vibration gives liquid by the resonance transmission of liquid in water tank 1, and liquid by following current to buffet and the transmission of horizontal Vortex-excited vibration major part gives elongated resilient body 3, and by the significantly deformation dissipation energy of damping layer 331 in elongated resilient body, residue fraction energy is dissipated by liquid self. Which reduce the energy finally entering main structure, control the structural response under dynamic load function, so that it is guaranteed that agent structure safety.
Specific embodiment of the invention step:
(1) structure is analyzed, calculates required vibration absorber parameter, determine therefrom that water tank form, cross section and the size etc. that adopt, determine the construction size of kind of liquid and elongated resilient body simultaneously.
(2) according to design parameter cutting steel plate, install at the upper cover plate cut and lower cover and connect node accessory.
(3) processing the damping layer 331 of elongated, cylindrical, overlap or parcel stiffness layer 32 outside it, finally waterproof case 31 on the outer set of stiffness layer 32, is assembled into elongated resilient body.
(4) elongated resilient body assembled and upper and lower cover plate are connected, and upper and lower cover plate is become water tank 1 with other Plate Weldings, be subsequently injected into frequency modulation liquid 2 to design water level.
(5) last, do corresponding outward appearance and process, and water tank is arranged on agent structure.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (5)
1. whirlpool shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, it is characterized in that, including water tank (1), frequency modulation liquid (2), elongated resilient body (3) and connection node (4), described water tank (1) is connected by the described node (4) that is connected with described elongated resilient body (3), is marked with described frequency modulation liquid (2) in described water tank (1).
2. whirlpool according to claim 1 shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, it is characterised in that described water tank (1) has two kinds of forms respectively tuned liquid damper, TLD, tuned sloshing damper TLD form and frequency modulation column damper TLCD.
3. whirlpool according to claim 1 shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, it is characterized in that, described, elongated resilient body (3) is that circular cross-section includes two kinds of embodiments, wherein the first is made up of waterproof case (31), stiffness layer (32) and damping layer (331), and the second is made up of waterproof case (31), stiffness layer (32), damping spring (332) and mass ball (34).
4. whirlpool according to claim 3 shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, it is characterized in that, described the first elongated resilient body (3) and frequency modulation liquid (2) the significantly oscillation crosswise in Vortex-excited vibration situation provides the damping of described frequency modulation liquid (2), and the vibration of described elongated resilient body (3) is then provided damping automatically to decay by described damping layer (331);The rigidity of described elongated resilient body (3) is provided by described stiffness layer (32), connect node (4) can be hinged, just connect or semi-rigid joint, the natural frequency of vibration of elongated resilient body (3) described in described stiffness layer (32) and described connection node (4) joint effect, the flow velocity that this natural frequency of vibration and described frequency modulation liquid (2) are caused by structural vibration meets Vortex-excited vibration requirement.
5. whirlpool according to claim 3 shakes consuming type tuned liquid damper, TLD, tuned sloshing damper, it is characterised in that the oscillator that described the second elongated resilient body (3) significantly transverse vibration energy is made up of described damping spring (33) and described mass ball (34) dissipates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134667.XA CN105672514B (en) | 2016-03-10 | 2016-03-10 | Whirlpool shakes consuming type tuned liquid damper, TLD, tuned sloshing damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610134667.XA CN105672514B (en) | 2016-03-10 | 2016-03-10 | Whirlpool shakes consuming type tuned liquid damper, TLD, tuned sloshing damper |
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| CN105672514A true CN105672514A (en) | 2016-06-15 |
| CN105672514B CN105672514B (en) | 2017-11-28 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567591A (en) * | 2016-10-28 | 2017-04-19 | 同济大学 | Multilayer tuned liquid damper |
| CN110645297A (en) * | 2019-10-18 | 2020-01-03 | 浙江工业大学 | Big tree is prevent wind with half U type TLD vibration damper of suspension type |
| CN110704922A (en) * | 2019-09-26 | 2020-01-17 | 浙江工业大学 | Annular water tank TLD vibration analysis method based on ANSYS software |
| CN111441496A (en) * | 2020-04-28 | 2020-07-24 | 广州大学 | Frequency modulation liquid column damping device |
| CN111692273A (en) * | 2020-06-29 | 2020-09-22 | 北京金风科创风电设备有限公司 | Hybrid damping module, vibration suppression device, vibration suppression method and wind generating set |
| CN111945578A (en) * | 2020-09-18 | 2020-11-17 | 大连理工大学 | Water tank damper for controlling buffeting response in bridge construction period |
| CN113109006A (en) * | 2020-01-13 | 2021-07-13 | 西门子歌美飒可再生能源公司 | Testing device and method for fatigue testing of wind turbine blades |
| CN113266194A (en) * | 2021-06-24 | 2021-08-17 | 南方电网科学研究院有限责任公司 | Semi-active vibration reduction control device for wind vibration of power transmission tower |
| CN113550998A (en) * | 2021-06-03 | 2021-10-26 | 湖南大学 | Energy consumption liquid damper based on Tesla valve structure |
| CN115199700A (en) * | 2022-09-09 | 2022-10-18 | 山西润世华新能源技术服务有限公司 | Composite tuned damper and wind generating set |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567591B (en) * | 2016-10-28 | 2019-03-01 | 同济大学 | A kind of multilayer tuned liquid damper, TLD, tuned sloshing damper |
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| CN110704922A (en) * | 2019-09-26 | 2020-01-17 | 浙江工业大学 | Annular water tank TLD vibration analysis method based on ANSYS software |
| CN110645297A (en) * | 2019-10-18 | 2020-01-03 | 浙江工业大学 | Big tree is prevent wind with half U type TLD vibration damper of suspension type |
| CN110645297B (en) * | 2019-10-18 | 2023-12-05 | 浙江工业大学 | Suspension type half U-shaped TLD vibration damper for large tree wind prevention |
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| CN111692273B (en) * | 2020-06-29 | 2022-02-01 | 北京金风科创风电设备有限公司 | Hybrid damping module, vibration suppression device, vibration suppression method and wind generating set |
| CN111692273A (en) * | 2020-06-29 | 2020-09-22 | 北京金风科创风电设备有限公司 | Hybrid damping module, vibration suppression device, vibration suppression method and wind generating set |
| CN111945578A (en) * | 2020-09-18 | 2020-11-17 | 大连理工大学 | Water tank damper for controlling buffeting response in bridge construction period |
| CN113550998A (en) * | 2021-06-03 | 2021-10-26 | 湖南大学 | Energy consumption liquid damper based on Tesla valve structure |
| CN113266194A (en) * | 2021-06-24 | 2021-08-17 | 南方电网科学研究院有限责任公司 | Semi-active vibration reduction control device for wind vibration of power transmission tower |
| CN115199700A (en) * | 2022-09-09 | 2022-10-18 | 山西润世华新能源技术服务有限公司 | Composite tuned damper and wind generating set |
| CN115199700B (en) * | 2022-09-09 | 2022-11-29 | 山西润世华新能源技术服务有限公司 | Composite tuned damper and wind generating set |
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| CN105672514B (en) | 2017-11-28 |
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