CN209854963U - Cylindrical tuning liquid column damper - Google Patents
Cylindrical tuning liquid column damper Download PDFInfo
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- CN209854963U CN209854963U CN201920305600.7U CN201920305600U CN209854963U CN 209854963 U CN209854963 U CN 209854963U CN 201920305600 U CN201920305600 U CN 201920305600U CN 209854963 U CN209854963 U CN 209854963U
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- 239000007788 liquid Substances 0.000 title claims abstract description 48
- 238000005192 partition Methods 0.000 claims abstract description 37
- 239000012530 fluid Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000013016 damping Methods 0.000 abstract description 10
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 230000009467 reduction Effects 0.000 description 6
- 230000005284 excitation Effects 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model relates to a cylindrical tuning liquid column damper, which comprises a cylindrical outer shell and a cylindrical inner shell which are concentrically arranged, wherein the tops of the cylindrical outer shell and the cylindrical inner shell are open and are positioned on the same horizontal plane, the bottoms of the cylindrical outer shell and the cylindrical inner shell are closed, and the bottom of the outer shell is lower than the bottom of the inner shell; the cylinder comprises a cylinder shell and a cylinder inner shell, wherein 2N groups of partition plate units are symmetrically arranged between the cylinder shell and the cylinder inner shell, each group of partition plate units are respectively composed of two L-shaped partition plates which are arranged at 180/N degrees, one ends of the two L-shaped partition plates are intersected, the other ends of the two L-shaped partition plates are fixedly connected with the cylinder shell respectively, the top of the horizontal section of each L-shaped partition plate and the bottom of the cylinder inner shell are positioned on the same horizontal plane and fixedly connected with the cylinder inner shell, liquid is filled between the two adjacent groups of partition plate units, and a. The utility model discloses on the basis of current one-way harmonious liquid column damper, realized multidirectional damping energy dissipation, easily adjust the attenuator natural frequency of shaking, be convenient for install and maintain.
Description
Technical Field
The utility model belongs to the technical field of civil structure vibration control device, in particular to cylindrical harmonious liquid column damper.
Background
The trend in modern building design and construction has led to an increasing number of high-rise civil engineering structures, which are likely to vibrate beyond safety standards as a result of being excited by wind or seismic loads. In the analysis of high-rise building structures, the effect of wind or earthquake loads should be studied in detail to improve the damping capacity of the structure.
A damper is a device for damping mechanical vibration and dissipating kinetic energy by using damping characteristics, and has been widely used in building structures. Generally, dampers are classified into three major categories, active, semi-active, and passive control devices. Among dampers classified by passive control devices, a Tuned Liquid Damper (TLD) is generally a rectangular or circular water containing tank, the frequency is adjusted by adjusting the length of the tank in the excitation direction and the water depth, and energy dissipation is realized by the impact of Liquid in the tank on the tank wall and the shaking of the Liquid during vibration. Tuned Liquid Column Dampers (TLCD) are a special form of TLD, usually U-shaped rectangular tanks filled with Liquid, which by adjusting the Liquid length make the TLCD frequency approach the building structure frequency, relying on Liquid head losses due to Liquid movement and viscous effects in the boundary layer during vibration to achieve energy dissipation. However, the general TLCD can only control the vibration response of a single structure direction, and the input directions of wind vibration loads and earthquake loads, which affect the structure of a high-rise building most, are uncertain, so that the vibration reduction and energy consumption of the structure level in multiple directions cannot be realized, and the vibration reduction effect is not ideal for the vibration loads in uncertain directions.
SUMMERY OF THE UTILITY MODEL
For overcoming the limitation that present harmonious liquid column damper (TLCD) can only control the vibration response of structure single direction, the utility model aims to provide a cylindrical harmonious liquid column damper, on the basis of traditional harmonious liquid column damper (TLCD), through the setting of cylinder shell, inner shell and L type baffle unit, realize the multidirectional damping power consumption's of structure level effect.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a cylindrical tuning liquid column damper, which is characterized in that the cylindrical tuning liquid column damper comprises a cylindrical outer shell and a cylindrical inner shell which are concentrically arranged, the tops of the cylindrical outer shell and the cylindrical inner shell are open and are positioned on the same horizontal plane, the bottoms of the cylindrical outer shell and the cylindrical inner shell are closed, and the bottom of the cylindrical outer shell is lower than the bottom of the cylindrical inner shell; the cylinder comprises a cylinder shell and a cylinder inner shell, wherein 2N groups of partition plate units are symmetrically arranged between the cylinder shell and the cylinder inner shell, each group of partition plate units respectively comprise two L-shaped partition plates which are arranged at 180/N degrees, one ends of the two L-shaped partition plates are intersected, the other ends of the two L-shaped partition plates are fixedly connected with the cylinder shell respectively, the top of the horizontal section of each L-shaped partition plate and the bottom of the cylinder inner shell are positioned on the same horizontal plane and fixedly connected with each other, liquid is filled between the two adjacent groups of partition plate units, and a cavity is formed between the L-shaped partition.
Further, the mass of the cylindrical tuning liquid column damper is 1% -5% of the mass of the controlled structure.
Further, the outer diameter of the cylindrical inner shell is 40% -60% of the outer diameter of the cylindrical outer shell; the height of the cylindrical shell is 80% -120% of the outer diameter of the cylindrical shell; the height difference between the cylindrical outer shell and the bottom of the cylindrical inner shell is 20% -30% of the outer diameter of the cylindrical outer shell; the wall thickness of the side wall and the wall thickness of the bottom plate of the cylinder outer shell and the cylinder inner shell along the circumferential direction are 2% -10% of the outer diameter of the corresponding cylinder.
The utility model has the advantages that:
1. the utility model discloses utilize the cylinder in the ascending symmetry of each side of level, through the setting of cylinder inner shell, cylinder shell and L type baffle for when being controlled the structure and receiving the external vibration excitation of a certain horizontal direction, the liquid motion of attenuator produces damping effect in this direction, realizes the harmonious damping of building structure in this direction. Usually, the input directions of wind vibration load and earthquake load have uncertainty, and the symmetry of the damper liquid column better ensures that the structure has better multidirectional vibration reduction effect.
2. The installation of a cylindrical tuned liquid column damper at the top of the structure is a feasible, simple and effective method for reducing the dynamic excitation vibration effect.
3. Due to the increase of the age of concrete, the elasticity modulus of the building structure can be changed, and further the natural vibration frequency of the structure is changed to a certain extent. When the natural vibration frequency of the damper is close to the natural vibration frequency of the structure, the damper has a good vibration reduction effect. The utility model provides a cylindrical harmonious liquid column damper's natural frequency of shaking can change through adjusting liquid column height promptly, and is convenient easy going.
Drawings
Fig. 1 is a schematic structural diagram of a cylindrical tuned liquid column damper according to an embodiment of the present invention.
FIG. 2 is a top view of the cylindrical tuned fluid column damper.
Fig. 3 is a schematic structural view of 8 sets of L-shaped diaphragm units in the damper shown in fig. 1.
Fig. 4 is a schematic structural view of a certain 1 group of L-shaped diaphragm units in the damper shown in fig. 1.
Reference numbers in the figures:
1-a cylindrical shell; 2, a cylindrical inner shell; 3-an L-shaped spacer; 4-liquid; 5-cavity.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
Example 1: as shown in fig. 1-4, the utility model provides a cylindrical harmonious liquid column damper wholly presents the box for the cylinder shape in appearance, include: the cylinder outer shell 1 and the cylinder inner shell 2 are concentrically arranged, the tops of the cylinder outer shell 1 and the cylinder inner shell 2 are open and are positioned on the same horizontal plane, the bottoms of the cylinder outer shell 1 and the cylinder inner shell 2 are closed, and the bottom of the cylinder outer shell 1 is lower than the bottom of the cylinder inner shell 2, namely the diameters and the heights of the cylinder outer shell 1 and the cylinder inner shell 2 are different; be equipped with 2N (N is positive integer) between cylinder shell 1 and cylinder inner shell 2, and 2 is not less than N and is less than or equal to 5, this embodiment N is 4 group partition unit that group symmetrical was arranged, every group partition unit is equallyd divide and is do not constituted by two L type baffles 3 that are laid 180/N degree, highly divide into horizontal segment and vertical section with L type baffle 3 according to vertical direction, the horizontal segment is located between 1 bottom of cylinder shell and 2 bottoms of cylinder inner shell, vertical section is located between 2 bottoms of cylinder inner shell and 1 top of cylinder shell, two 3 one ends of L type baffle in every group partition unit intersect, the other end respectively with cylinder shell 1 rigid coupling, the top of each 3 horizontal segments of L type baffle and the bottom of cylinder inner shell 2 are located same horizontal plane and both rigid couplings, it has liquid 4 to fill between two sets of adjacent baffle units, form cavity 5 between the L type baffle 3 in every group partition unit.
The embodiment of the present invention provides a concrete implementation and functional description of each component part as follows:
in the damper of the present embodiment, the cylindrical outer shell 1, the cylindrical inner shell 2 and each L-shaped partition plate 3 may be made of steel, glass or plastic. The selection principle of the sizes of all parts is as follows: the outer diameter of the cylinder inner shell 2 is 40% -60% of the outer diameter of the cylinder outer shell 1, the height of the cylinder outer shell 1 is 80% -120% of the outer diameter, the length of the vertical edge of the horizontal section of the L-shaped partition plate 3, which is positioned below the bottom of the cylinder inner shell 2 (namely the height difference between the cylinder outer shell 1 and the bottom of the cylinder inner shell 2), is 20% -30% of the outer diameter of the cylinder outer shell 1, the length of the horizontal section of the L-shaped partition plate 3 is 30% -40% of the outer diameter of the cylinder outer shell 1, and the wall thickness of the side walls of the cylinder outer shell 1 and the cylinder inner shell 2 in the circumferential direction and the wall thickness of the bottom plate are 2% -10% of the. Fixedly connecting the cylindrical outer shell 1 with the cylindrical inner shell 2 through each group of partition plate units, forming a cavity for containing liquid 4 between two adjacent groups of partition plate units, and communicating the cavity at the bottoms of the cylindrical outer shell 1 and the cylindrical inner shell 2; the top parts of the cylindrical outer shell 1 and the cylindrical inner shell 2 are open, the upper surfaces of the cylindrical outer shell and the cylindrical inner shell are positioned at the same horizontal height, and the centers of the cross sections are positioned at the same point. The bottom of the cylindrical inner shell 2 is supported by each group of partition plate units, 8 groups of partition plate units are arranged between the two cylindrical shells of the embodiment, each group of partition plate units is formed by splicing 2L-shaped partition plates 3 which form an angle of 45 degrees with each other, and the spliced edge is a vertical edge of the horizontal section of the L-shaped partition plate 3 below the bottom of the cylindrical inner shell 2; each group of partition board units are divergently arranged at an angle of 45 degrees around the axis of the cylindrical shell and are uniformly distributed between the two cylindrical shells, namely, any group of partition board units are all V-shaped axisymmetric figures on the cross section vertical to the axis of the cylindrical shell, and the symmetric axis of the partition board units passes through the circle center of the cylindrical shell.
The cylindrical tuning liquid column damper is arranged at the top of a controlled structure, liquid 4 (the liquid can adopt pure water or viscous liquid such as oil, glycerol and the like) is contained in a cavity between two adjacent groups of partition plate units, no liquid is added into the cavity 5 between the L-shaped partition plates 3 in each group of partition plate units, and along with the vibration of the damper, the movement range of the liquid 4 is only in the cavity between the partition plate units in all directions symmetrical about the axis of the cylinder shell and cannot move into the cavity 5. When the controlled structure is excited by external vibration, the damper generates damping effect through the liquid head loss caused by the movement of the internal liquid and the viscous action in the boundary layer, and the tuning vibration reduction of the structure in horizontal multi-direction can be realized.
This attenuator is installed in the building structure top of being regulated and control, pours into liquid 4 into from the top of cylinder shell 1 and cylinder inner shell 2 into, and through the liquid column height in adjusting the attenuator, the natural frequency of vibrating of messenger's attenuator liquid is close to the natural frequency of vibrating of being controlled the structure in this attenuator working process. The principle of the size selection of the damper is as follows: the mass ratio of the damper to the controlled structure is 1-5%.
The utility model discloses can be seen as the whole that constitutes jointly by the U type harmonious liquid column damper of a plurality of symmetrical arrangement is cylindric harmonious liquid column damper, because cylindrical damper has the symmetry in each direction of level for when being controlled the structure and receiving the external vibration excitation of a certain horizontal direction, the liquid of attenuator is rocked the motion and is produced damping effect with tank wall frictional action in this direction, realizes the harmonious damping of structure in this direction. Usually, the input directions of wind vibration load and earthquake load have uncertainty, and the symmetry of the damper liquid column better ensures that the structure has better multidirectional vibration reduction effect and dissipates the kinetic energy of part of the structure.
Claims (5)
1. The cylindrical tuned liquid column damper is characterized by comprising a cylindrical outer shell (1) and a cylindrical inner shell (2) which are concentrically arranged, wherein the tops of the cylindrical outer shell (1) and the cylindrical inner shell (2) are open and are positioned on the same horizontal plane, the bottoms of the cylindrical outer shell (1) and the cylindrical inner shell (2) are closed, and the bottom of the cylindrical outer shell (1) is lower than the bottom of the cylindrical inner shell (2); be equipped with the baffle unit that 2N group symmetry was arranged between cylinder shell (1) and cylinder inner shell (2), every group baffle unit is equallyd divide and is do not constitute by two L type baffles (3) that are 180/N degree and lay, two L type baffle (3) one end is crossing, the other end respectively with cylinder shell (1) rigid coupling, the horizontal segment top of each L type baffle (3) and the bottom of cylinder inner shell (2) are located same horizontal plane and both rigid couplings, it has liquid (4) to fill between two sets of adjacent baffle units, forms cavity (5) between L type baffle (3) in every group baffle unit.
2. The cylindrical tuned fluid column damper as in claim 1, wherein said cylindrical tuned fluid column damper has a mass of 1% to 5% of the mass of the structure being controlled.
3. The cylindrical tuned fluid column damper according to claim 1 or 2, wherein the outer diameter of said cylinder inner housing (2) is 40% to 60% of the outer diameter of the cylinder outer housing (1); the height of the cylindrical shell (1) is 80-120% of the outer diameter of the cylindrical shell; the height difference between the cylindrical outer shell (1) and the bottom of the cylindrical inner shell (2) is 20-30% of the outer diameter of the cylindrical outer shell (1); the length of the horizontal section of the L-shaped partition plate (3) is 30-40% of the outer diameter of the cylindrical shell (1); the wall thickness of the side wall and the wall thickness of the bottom plate of the cylinder outer shell (1) and the cylinder inner shell (2) along the circumferential direction are 2% -10% of the outer diameter of the corresponding cylinder.
4. The cylindrical tuned fluid column damper as in claim 1 or 2, wherein N is a positive integer and 2N 5.
5. The cylindrical tuned fluid column damper as in claim 3, wherein N is a positive integer and 2N 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305600.7U CN209854963U (en) | 2019-03-12 | 2019-03-12 | Cylindrical tuning liquid column damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305600.7U CN209854963U (en) | 2019-03-12 | 2019-03-12 | Cylindrical tuning liquid column damper |
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| Publication Number | Publication Date |
|---|---|
| CN209854963U true CN209854963U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920305600.7U Active CN209854963U (en) | 2019-03-12 | 2019-03-12 | Cylindrical tuning liquid column damper |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826334A (en) * | 2019-03-12 | 2019-05-31 | 清华大学 | A kind of cylindrical tuning column damper |
| CN115435035A (en) * | 2022-08-19 | 2022-12-06 | 国家电投集团江苏海上风力发电有限公司 | Two-way tuning liquid column damper and offshore wind generating set applying same |
-
2019
- 2019-03-12 CN CN201920305600.7U patent/CN209854963U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826334A (en) * | 2019-03-12 | 2019-05-31 | 清华大学 | A kind of cylindrical tuning column damper |
| CN109826334B (en) * | 2019-03-12 | 2023-12-22 | 清华大学 | Cylindrical tuned liquid column damper |
| CN115435035A (en) * | 2022-08-19 | 2022-12-06 | 国家电投集团江苏海上风力发电有限公司 | Two-way tuning liquid column damper and offshore wind generating set applying same |
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