JP4070616B2 - Damping apparatus and damping method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention is composed of columns and beams, between columns, between beams, between columns and beams, between intersections between columns and beams, between intersections between columns and beams, or between intersections between columns and beams and beams. The present invention relates to an improvement of a vibration damping device and a vibration damping method for suppressing vibration and deformation of a ramen provided with a damper.
[0002]
[Prior art]
Conventionally, as this type of vibration damping device, for example, a vibration damping device previously proposed by a patent applicant (see, for example, Patent Document 1) is known.
[0003]
In other words, this damping device is loaded by an earthquake or the like acting on the ramen by arranging dampers as diagonal members on the diagonals of the space between the columns of the ramen in the structure and between the beams. To suppress vibration.
[0004]
However, in this vibration damping device, if the space between the columns becomes narrow, the angle at which the damper is attached to the columns becomes small, so that a sufficient horizontal resistance force cannot be obtained. In this case, if a sufficient horizontal resistance force is obtained, a large force acts in the vertical direction, and a load is applied to the intersecting portion and the bracket.
[0005]
Therefore, when the distance between the columns is narrow, two dampers are placed between the bracket connected to the intersection of the column and the upper beam, the bracket connected to the middle of the column, and the bracket connected to the intersection of the lower beam of the column. A proposal has been made to avoid the above inconvenience by arranging the dampers alternately in a substantially square shape and increasing the mounting angle of the damper with respect to the column (see, for example, Patent Document 2).
[0006]
[Patent Document 1]
JP 2000-54677 A (page 3, right column, line 25 to page 3, right column, line 45, FIG. 1)
[Patent Document 2]
JP-A-10-227148 (page 4, right column, line 14 to page 4, right column, line 35, FIG. 10)
[0007]
[Problems to be solved by the invention]
In this case, the above inconvenience is avoided, but a new harmful effect is generated. That is, in this vibration damping device, the two dampers are alternately arranged in a substantially square shape. However, when horizontal vibration is input to the ramen in the structure, for example, the upper damper contracts. Since the lower damper is extended, the bracket coupled to the middle of the column to which the two dampers are coupled is applied with a vertically downward force to generate a moment for rotating the bracket, and the bracket is coupled. The pillar may be distorted.
[0008]
Therefore, the present invention was devised in order to improve the above-described problems, and the object of the present invention is that it can sufficiently exert a horizontal resistance force and is high from low frequency vibrations acting on ramen. An object of the present invention is to provide a vibration damping device and a vibration damping method that effectively suppress vibration and prevent distortion of a column or beam due to a moment.
[0009]
[Means for Solving the Problems]
In order to achieve the above-described object, the vibration damping device in the first problem solving means includes a column and a beam to form a ramen, and between the columns in the ramen, between the beams, between the columns and beams, between the intersections of the columns and beams, In the damping device that suppresses the vibration and deformation of the ramen with a plurality of dampers arranged between the intersection of the beam and the column or between the intersection of the column and the beam and the beam, the plurality of dampers are staggered. Provided with a relief valve between the dampers and between the dampers, between the columns or between the beams, and for releasing one or more of the plurality of dampers with a predetermined cracking pressure. The remaining damper is a damper that generates a damping force depending on the piston speed .
[0011]
The second problem solving means, the vibration damping apparatus of the first challenge solutions, each damper, between the intersection of and the intersection, the reinforcing member and the bar or beam, each cross It arrange | positions through the bracket couple | bonded with the part, It is characterized by the above-mentioned.
[0012]
Further, the third problem solving means is the vibration damping device according to the first or second problem solving means, in which each damper is arranged so that the intersection of the axis of the column and the beam is positioned on an extension line of the axis of each damper. It was set up.
[0013]
Further, the vibration control method in the fourth problem solving means is composed of columns and beams, and includes a plurality of dampers between columns, between beams, between columns and beams, between columns and beams, between columns, or between beams. A plurality of dampers are arranged in a staggered manner, and one or more of the plurality of dampers is a damper having only a relief valve that opens with a predetermined cracking pressure, and the remaining dampers As a damper that generates a damping force that depends on the piston speed, the vibration and deformation of the ramen are suppressed , and the reinforcement between the damper and the damper between the columns or between the beams, It is characterized by suppressing bending.
[0015]
According to a fifth problem solving means, in the vibration damping method according to the fourth problem solving means, each damper is arranged between the intersection and the intersection of the reinforcing member and the column or beam. It arrange | positions through the bracket couple | bonded with.
[0016]
According to a sixth problem solving means, in the vibration damping method of the fourth or fifth problem solving means, each damper is arranged so that the intersection of the axis of the column and the beam is positioned on the extension line of the axis of each damper. It was set up.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a simplified model diagram in which the vibration damping device of the present invention is used for a structure.
[0018]
The structure is a structure in which a large number of columns 1, 1 standing in the longitudinal direction are arranged in the front-rear and left-right directions, and a large number of beams 2, 2 are installed between the adjacent columns 1, 1.
[0019]
One or more damping devices are disposed in the ramen L, and are used to suppress the vibration of the structure. And the vibration damping method uses this vibration damping device to suppress the vibration of the ramen.
[0020]
On the other hand, the basic form of the vibration damping device in the present invention is the upper and lower brackets 11 and 11 coupled to the intersection of the column 1 and the beam 2 of the ramen L, and the reinforcing material 10 spanned and coupled between the columns 1 and 1. And upper and lower brackets 12 and 12 coupled to the intersection of the reinforcing member and the pillar 1 and two dampers D1 and D2 disposed between the bracket 11 and the bracket 12, all of which are pillars 1. , 1 and beams 2 and 2.
[0021]
Since the brackets 11 and 11 are the intersections of the column 1 and the beam 2 and are coupled to the column 1 and the beam 2, the brackets 11 and 11 are coupled to only the column or only the beam that may be subjected to only a shearing force. Excellent in strength.
[0022]
The dampers D1 and D2 are arranged between the brackets 11 and 12 of each ramen L as shown in the figure, but the cylinders of the dampers D1 and D2 are joined to the bracket 11 via the brace 13, On the other hand, the piston rod side is joined to the bracket 12. In the present embodiment, the brackets 11 and 12 are joined with pins (not shown) and can swing with respect to the brackets 11 and 12. Further, the damper and each bracket may be joined via a spherical bearing in addition to the pin joint. Also in this case, the dampers D1 and D2 can swing with respect to the brackets 11 and 12.
[0023]
The brace 13 has dampers D1 and D2, which will be described later, set in a double rod type, so that at least the part of the piston rod that protrudes from the cylinder is hollow so as not to prevent expansion and contraction.
[0024]
The dampers D1 and D2 are mounted on the extended line of the axis of the dampers D1 and D2 so that the intersection of the axis of the column 1 and the beam 2 is located. By attaching to the column 1 and the beam 2, an unnecessary bending moment is prevented from being applied to the column 1 and the beam 2.
[0025]
Here, before explaining the structure of the dampers D1 and D2 of the present invention, the operation and effect of the reinforcing material of the present invention will be described in the reference examples of FIGS. 1 to 3 in which the two dampers are the same. Even when the dampers D1 and D2 having different damping characteristics of the invention are used, the same operation and effect are exhibited.
As shown in FIG. 3, the dampers D <b> 1 and D <b> 2 are partitioned by a cylinder 70, a piston 72, a piston rod 71 movably inserted into the cylinder 70 via the piston 72, and the piston 70 in the cylinder 70. A double rod type damper provided with an extension side chamber R4 and a pressure side chamber R3, comprising proportional valves 61 and 61 and relief valves 63 and 63 proportional to the piston speed in which the extension side chamber R4 and the pressure side chamber R3 are provided in parallel. The proportional valves 61 and 61 and the relief valves 63 and 63 allow the damping force to be generated when the piston rod 71 moves in and out of the cylinder 70.
[0026]
The proportional valve 61 is provided in the middle of the passage 66 provided in the piston 72, and is urged in a direction to close the passage 66 by the urging spring 62, and is proportional to the pressure on the upstream side of the passage 66. The proportional valve 61, 61 allows the flow of hydraulic oil from the expansion side chamber R4 to the compression side chamber R3 and the hydraulic oil from the compression side chamber R3 to the expansion side chamber R4. Since the dampers D1 and D2 are expanded and contracted, one of the proportional valves 61 and 61 communicates with the passages 66 and 66, and the hydraulic oil is proportional to the dampers D1 and D2. A predetermined damping force is generated when passing through the valves 61 and 61.
[0027]
The relief valve 63 is provided in the middle of the passage 67 provided in the piston 72, and is urged in a closing direction by the urging spring 64 so as to close the passage 67. When the upstream pressure increases, the pressure can communicate with the passage 67 through the passage 65 against the spring force of the biasing spring 64.
[0028]
The relief valves 63, 63 are provided with two types, one that allows the flow of hydraulic oil from the expansion side chamber R4 to the compression side chamber R3 and one that allows the flow of hydraulic oil from the compression side chamber R3 to the expansion side chamber R4. .
[0029]
That is, the dampers D1 and D2 not only generate a damping force by the proportional valves 61 and 61 described above, but also the dampers D1 and D2 expand and contract to increase the pressure in the compression side chamber R3 or the expansion side chamber R4. When one of the relief valves 63 and 63 reaches the cracking pressure F2, the passages 67 and 67 are communicated, and the hydraulic oil passes through the proportional valves 61 and 61 and the passages 67 and 67, and generates a predetermined damping force. It will be.
[0030]
The passages 66, 66, 67, 67, the proportional valves 61, 61, and the relief valves 63, 63 may be provided outside the piston 72 as long as a predetermined damping force can be generated.
[0031]
Accordingly, the dampers D1 and D2 have a damping characteristic as shown in FIG. 4. For example, when the dampers D1 and D2 are extended, the proportional valve 61 is first set to the hydraulic oil when the piston speed is low. 4 passes through and generates a damping force, and exhibits a damping characteristic depending on the piston speed as shown by a straight line B in FIG. 4. When the predetermined piston speed is reached, the pressure in the compression side chamber R3 increases, and the relief valve 63 is cracked. When the pressure F2 is reached, the passages 67 and 67 are communicated with each other, and a gentle damping characteristic as shown by the straight line C in FIG.
[0032]
In this vibration damping device and this vibration damping method, when vibration is input to the ramen L due to an earthquake, strong wind, or the like, as shown in FIG. A horizontal force F is applied. Then, while the upper damper D1 in the figure contracts, the lower damper D2 in the figure expands and generates a predetermined damping force to suppress the vibration and deformation of the ramen L, but the upper damper D1 in the figure Since the columns 1 and 1 tend to bend in the right direction in the figure, a force acts in the contracting direction, so that the force f1 and the force f4 are applied to the column 1 and the beam 2 as the reaction force. The component forces of the force f1 and the force f4 at this time are vertical component forces f3 and f6 and horizontal component forces f2 and f5.
[0033]
On the other hand, the lower damper D2 in the drawing receives a force in a direction extending opposite to that of the damper D1, so that the force f7 and the force f10 are applied to the column 1 and the beam 2 as the reaction force. The component forces of force f7 and force f10 at this time are vertical component forces f9 and f12 and horizontal component forces f8 and f11.
[0034]
Therefore, since the vertical component force f6 and the vertical component force f9 act on the brackets 12 and 12 in the same direction, that is, vertically downward in the figure, the dampers D1 and D2 on the pillar 1 on the right side in the figure A moment M acts on a point O that is an intersection of the axes, and the right column 1 and each bracket 12 to which the damper D1 and the damper D2 are joined are rotated counterclockwise in the drawing.
[0035]
However, since the reinforcing material 10 is a support against this rotation, the column 1 is prevented from being distorted or bent. Furthermore, since the reinforcing material 10 is stretched between the columns 1 and 1 and joined, the strength of the ramen L can be improved, and the deformation of the ramen L can also be suppressed.
[0036]
In addition, compared to a vibration damping device with a single damper, even when the distance between the columns is narrow, a plurality of dampers are alternately attached to the columns and beams, so the mounting angle of the damper with respect to the columns increases. It is possible to obtain a sufficient horizontal force.
[0037]
Further, since the bracket 12 is coupled to the intersection of the reinforcing member 10 and the column 1 described above, the vertical component force f6 applied to the bracket 12 compared to that in which the bracket is coupled only to the column 1. And f9 are supported by the reinforcing member 10, the strength of the bracket 12 is improved, and damage to the bracket is also suppressed.
[0038]
When a horizontal force acts in the left direction in FIG. 2 contrary to the above, the upper damper D1 is expanded and the lower damper D2 is contracted. The upward component force acts and a clockwise moment acts on the right column 1, but the reinforcing member 10 also prevents the column 1 from being distorted or bent.
[0039]
Further, in the present embodiment, the description has been given of the case where the reinforcing material 10 is spanned between the columns 1 and 1, but the reinforcing material is spanned and coupled between the beams 2 and 2, and the two dampers are connected to the column 1. You may arrange | position via a bracket on the diagonal between the crossing part of the beam 2, and the crossing part of a reinforcing material and the beam 2. FIG. In this case, distortion and bending of the beam can be prevented by the above-described action.
[0040]
When the vibration frequency further increases and the relief valve 63 of each of the dampers D1 and D2 reaches the cracking pressure F2 communicating with the passage 66, the damping characteristic of the damper D2 is as shown by the straight line C in FIG. Thus, the damping force generated by the dampers D1 and D2 reaches a peak. Therefore, it is possible to prevent an excessive force from being applied to the column 1, the beam 2, and the brackets 11 and 12 to which the dampers D1 and D2 are connected, and as a result, damage to the columns and the like is prevented.
[0041]
In the above description, the reference example in which the two dampers D1 and D2 are the same has been described. However, one damper D1 is a damper having only a relief valve that is opened with a predetermined cracking pressure, and the other damper D2 is The present invention will be described as a damper that generates a damping force depending on the piston speed similar to that described above.
[0042]
Since the detailed configuration of the damper D2 in this case has been described above, the description thereof will be omitted. On the other hand, the damper D1 is provided in the cylinder 50, the piston 52, and the cylinder 50 as shown in FIG. The piston rod 51 is movably inserted through the piston 52, and hydraulic oil or the like is sealed in the expansion side chamber R2 and the pressure side chamber R1 in which the piston 52 defines the cylinder 50. The extension side chamber R2 and the pressure side chamber R1 are set to communicate with each other via relief valves 53 and 53, and the relief valves 53 and 53 can generate a damping force when the piston rod 51 moves in and out of the cylinder 50. It is a thing.
[0043]
The relief valve 53 is provided in the middle of the passage 56 provided in the piston 52. The relief valve 53 is urged in a closing direction by the urging spring 54 so as to close the passage 56. When the upstream pressure increases, the pressure can communicate with the passage 56 through the passage 55 against the spring force of the biasing spring 54.
The relief valves 53 and 53 are provided with two types, one that allows the flow of hydraulic oil from the expansion side chamber R2 to the compression side chamber R1, and one that allows the flow of hydraulic oil from the compression side chamber R1 to the expansion side chamber R2. Therefore, when the damper D1 expands or contracts, the damper D1 generates a predetermined damping force when one of the relief valves 53, 53 communicates with the passages 56, 56 and the hydraulic oil passes through the passages 56, 56.
[0044]
The passages 56 and 56 and the relief valves 53 and 53 may be provided outside the piston 52 as long as a predetermined damping force can be generated.
[0045]
That is, the damper D1 has a damping characteristic as shown in FIG. 6. For example, when the damper D1 extends, when the predetermined piston speed is reached, the pressure in the pressure side chamber R1 increases, and the relief valve When 53 reaches the cracking pressure F1, it communicates with the passage 56 and exhibits a gentle damping characteristic as indicated by the line A in FIG.
[0046]
And when the vibration of comparatively low frequency, such as a wind, acts on the ramen L of the structure to which this vibration damping device is applied, that is, the relief valve 53 of the damper D1 does not reach the cracking pressure F1 communicating with the passage 56. In this case, the damper D2 exhibits a damping force proportional to the vibration frequency, that is, a damping force depending on the piston speed, and resists the force acting on the ramen L due to the vibration, but at this time, if the vibration frequency is low Since only a low damping force can be exerted, the vibration and deformation of the ramen cannot be sufficiently suppressed. On the other hand, when the vibration frequency is low, the damper D1 does not reach the cracking pressure F1 of the relief valve 53. Since it does not expand and contract, it becomes a rigid body state, and the deformation of the ramen L and the deflection of the column 1 can be suppressed, so that the vibration of the ramen L can be effectively suppressed.
[0047]
Conversely, when relatively high frequency vibrations such as earthquakes act on the ramen and the relief valve 53 of the damper D1 reaches the cracking pressure F1 and communicates, both the damper D1 and the damper D2 generate a damping force. Therefore, it resists the force acting on the ramen L, absorbs vibration energy, and suppresses the vibration and deformation of the ramen.
[0048]
When the vibration frequency further increases and the relief valve 63 of the damper D2 reaches the cracking pressure F2 communicating with the passage 66, the damping characteristic of the damper D2 is as shown by the straight line C in FIG. The damping force generated by the damper D2 reaches a peak. Therefore, an excessive force is prevented from being applied to the column 1, the beam 2, and the bracket 11 to which the damper D <b> 2 is connected, and as a result, damage to the column and the like is prevented.
[0049]
Therefore, in the vibration damping device and the vibration damping method, the combination of the dampers D1 and D2 having different damping characteristics allows not only the relatively high-frequency vibrations acting on the ramen L in the structure due to an earthquake or the like, but also as in the past. The vibration control device using a damper having a single damping characteristic effectively suppresses vibration of a relatively low frequency acting on the ramen L and deformation of the ramen L due to an input of wind or the like that could not be sufficiently suppressed. Things will be possible. That is, it is also possible to suppress low frequency vibrations acting on structures that employ the ramen L.
[0050]
Then, vibration of a wide range of frequencies can be suppressed without making the ramen pillar thick, so the construction cost of the structure using ramen can be kept low, especially in a location where strong winds blow. In particular, the cost reduction effect is high.
[0051]
In addition, when bracing is added to the ramen to suppress the relatively low frequency vibration of the ramen due to the input of wind and the deformation of the ramen at that time, vibration energy due to earthquakes etc. cannot be absorbed, and bracing Although the steel material used cannot withstand repeated use when plastically deformed, in the present invention, these vibrations can be effectively suppressed, and since the damper expands and contracts, it does not plastically deform like steel materials. Since it can withstand use, it is advantageous in terms of maintenance costs.
[0052]
Each of the dampers D2 includes the proportional valve and the relief valve as described above, but the effect of preventing damage to the pillars is lost, but depends on the piston speed including the proportional valve, the orifice, and the leaf valve. You may use what exhibits the attenuation characteristic to do.
[0053]
Also, as shown in FIGS. 7 and 8, if this vibration damping device is installed in some ramen L of the structure, the vibration of the structure can be effectively controlled. Since the damper is a damper having only a relief valve that opens at the above-described predetermined cracking pressure, and the other damper is a damper that generates a damping force that depends on the piston speed, a relatively high frequency of the structure described above can be obtained . With the above configuration, not only high vibrations but also vibrations having a relatively low frequency can be effectively suppressed.
[0054]
Further, in the case where the vibration damping device is disposed in some of the ramen L of the structure, for example, all the dampers in the at least one ramen L are dampers that generate a damping force that depends on the piston speed, The dampers in the other remaining ramen L are made dampers having only relief valves that are opened with a predetermined cracking pressure. That is, it is determined from the beginning which vibration is to be suppressed for each vibration damping device. However, the above effect is not lost.
[0055]
Subsequently, a modification of the present embodiment will be described. As shown in FIG. 9, in this modification, the damper of the damping device of the above-described embodiment is provided with three dampers, and a reinforcing material is provided between the dampers. That is, also in this case, as described above, the column 1 can be prevented from being distorted or bent, and the mounting angle of the dampers D1, D2, and D3 to the column becomes larger. Generation | occurrence | production is suppressed more and two reinforcement materials are provided, Therefore The damage suppression effect of a bracket or a pillar becomes high, and the intensity | strength of the ramen L will also improve more.
[0056]
In this case as well, any one of the three dampers D1, D2, and D3 is a damper having only a relief valve that opens with a predetermined cracking pressure, and the remaining dampers depend on the piston speed. since a damper for generating a damping force, even a low vibration relatively frequency not only relatively high frequency vibrations acting on the rigid frame, it is possible to effectively suppress the above-described configuration.
[0057]
【The invention's effect】
According to the invention of each claim, since the plurality of dampers are provided in the ramen, and the reinforcing material is spanned between the dampers and between the columns or the beams, the supporting material resists the rotation due to the moment of the columns. Therefore, the column is prevented from being distorted or bent. Furthermore, since the reinforcing material is stretched between the columns and joined, the strength of the ramen can be improved, and the ramen can be prevented from being deformed. In addition, compared to a vibration damping device in which a single damper is provided, even when the distance between the columns is narrow, the mounting angle of the damper with respect to the columns is increased, and a sufficient horizontal force can be obtained.
[0058]
In particular , by combining dampers with different damping characteristics, not only vibration with relatively high frequency acting on the ramen due to earthquakes, etc., but also vibration suppression devices that use a damper with a single damping characteristic as in the past are sufficiently suppressed. It is also possible to effectively suppress the vibration of a relatively low frequency acting on the ramen due to the input of wind or the like that could not be generated and the deformation of the ramen at that time. That is, it is possible to suppress vibrations at a low frequency that act on structures that employ ramen.
[0059]
Then, vibration of a wide range of frequencies can be suppressed without making the ramen pillar thick, so the construction cost of the structure using ramen can be kept low, especially in a location where strong winds blow. In particular, the cost reduction effect is high.
[0060]
Furthermore, when bracing is added to the ramen to suppress relatively low frequency vibrations of the structure due to the input of wind or the like and the deformation of the ramen at that time, vibration energy due to earthquakes cannot be absorbed, and bracing However, in the present invention, these vibrations can be effectively suppressed, and since the damper expands and contracts, it does not plastically deform like steel materials. It is also advantageous in terms of maintenance costs.
[0061]
According to the inventions of claims 2 and 5 , since the bracket is coupled to the intersection of the reinforcing member and the column or the reinforcing member and the beam, the bracket is compared with the bracket coupled to only the column or the beam. Since the reinforcing material supports the vertical component force applied,
The strength of the bracket is improved, and damage to the bracket is also suppressed.
[0062]
According to the third and sixth aspects of the present invention, each damper is mounted on an extension of the axis of each damper so that the intersection of the axis of the column and the beam is located. Thus, each damper is attached to the column and the beam. By attaching to the column, unnecessary bending moment can be prevented from being applied to the column and beam.
[Brief description of the drawings]
FIG. 1 is a model diagram showing a state in which a vibration damping device according to the present invention is applied to a ramen.
FIG. 2 is a diagram illustrating a force acting on a column when a horizontal force is applied to a ramen to which the vibration damping device is applied.
FIG. 3 is a schematic longitudinal sectional view of a damper that generates a damping force depending on piston speed.
FIG. 4 is a diagram illustrating a damping characteristic of a damper that generates a damping force depending on a piston speed.
FIG. 5 is a schematic vertical cross-sectional view of a damper having only a relief valve that opens with a predetermined cracking pressure.
FIG. 6 is a diagram showing a damping characteristic of a damper having only a relief valve that opens with a predetermined cracking pressure.
FIG. 7 is a model diagram when the vibration damping device is applied to a plurality of ramens.
FIG. 8 is a model diagram when the vibration damping device is applied to a plurality of ramens. FIG. 9 is a model diagram showing a modification of the vibration damping device.
[Explanation of symbols]
1 Column 2 Beam 10 Reinforcement material 11, 12 Bracket 13 Braces D1, D2, D3 Damper L Ramen

Claims (6)

Ramen is composed of columns and beams, and between columns, between beams, between columns and beams, between intersections between columns and beams, between column and beam intersections and columns, or between column and beam intersections and beams. In a vibration damping device that suppresses vibration and deformation of ramen with a plurality of dampers arranged between them, a plurality of dampers are arranged in a staggered manner and are reinforced between the dampers and between the columns or between the beams. Further, one or more of the plurality of dampers is a damper having only a relief valve that opens with a predetermined cracking pressure, and the remaining dampers are dampers that generate a damping force that depends on the piston speed . A vibration damping device characterized by that. 2. The control according to claim 1, wherein each damper is disposed between the intersecting portion and the intersecting portion between the reinforcing member and the column or the beam via a bracket coupled to each intersecting portion. Shaker. 3. The vibration damping device according to claim 1 , wherein each damper is disposed so that an intersection of an axis of a column and a beam is positioned on an extension line of an axis of each damper . 4. In a ramen made up of columns and beams, with multiple dampers between columns, between beams, between columns and beams, between columns and beams, between columns or between beams,
A plurality of dampers are arranged in a staggered manner, and at least one of the plurality of dampers is a damper having only a relief valve that opens with a predetermined cracking pressure, and the remaining dampers are damped depending on piston speed As a damper that generates force, it suppresses vibration and deformation of the ramen, and further suppresses distortion and bending of the column or beam by a reinforcing material spanned between the column and the beam between the damper and the damper. Vibration control method . 5. The control according to claim 4, wherein each damper is disposed between the intersecting portion and the intersecting portion between the reinforcing member and the column or the beam via a bracket coupled to each intersecting portion. Shaking method. 6. The vibration damping method according to claim 4, wherein each damper is disposed so that an intersection of the axis of the column and the beam is positioned on an extension line of the axis of each damper .

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