JP2001065189A - Stud type vibration damping device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] A stud-type vibration damping device having a high vibration damping efficiency and capable of bearing a large shear force while favorably suppressing the magnitude of a bending moment to be borne. SOLUTION: The vibration damping device has a form of a stud (1) attached between a pair of opposing beam members (3a, 3b). At least a part of the stud is configured of a hysteresis damping member for absorbing vibration energy input to the structure as hysteresis energy. Stud and one beam member (4
b) is joined so as to transmit the bending moment in the plane, and the stud and the other beam member (4a) are joined so as not to substantially transmit the bending moment in the plane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stud type vibration damping device, and more particularly to a stud type vibration damping device that absorbs vibration energy input to a steel structure as hysteresis energy.

[0002]

2. Description of the Related Art Conventionally, a design based on an earthquake-resistant structure has been generally performed as a design method of a structure to withstand an earthquake. On the other hand, recently, the vibration response of the structure has been controlled to actively reduce the shaking of the structure due to the earthquake, reducing the fear of the earthquake and maintaining important functions such as water supply equipment attached to the structure. Attempts have been made to do so. This type of structure is called a damping structure. In the vibration damping structure, other vibrations such as vibrations due to wind, vibrations due to traffic, vibrations due to operation of machines, and the like are not limited to vibrations due to earthquakes.

[0003] Vibration damping structures are classified into seismic isolation structures, energy absorbing mechanisms, mass effect mechanisms, and automatic control mechanisms.
Further, the energy absorbing mechanism is classified into a hysteretic damping mechanism, a friction damping mechanism, and a viscous damping mechanism. As specific examples of the hysteresis damping member used for the steel structure, an unbonded brace, an extremely low yield point steel plate wall, an extremely low yield point steel stud, and the like are known.

[0004] Among the various types of hysteresis damping members described above, a typical stud type hysteresis damping member (vibration damping device) is an H-shaped section mounted between a beam member on the upper floor and a beam member on the lower floor. The flange portion is formed from general building steel, and the web portion is formed from a steel material having a significantly lower yield point than general building steel, that is, a very low yield point steel. . Further, in the conventional stud type vibration damping device, both ends thereof are rigidly connected to a corresponding beam member or a bracket extending from the beam member. A bending moment, a shearing force, and an axial force are generated in a stud as a vibration damping device by receiving a horizontal force due to an earthquake or the like.

In this case, as described above, since the extremely low yield point steel is used for the web portion of the vibration damping device, the shear yield of the web portion precedes the bending yield of the flange portion. Therefore, the input vibration energy is consumed (absorbed) as hysteresis energy by the plastic deformation of the web portion. As a result, the vibration energy can be attenuated at an early stage while the vibration of the structure is suppressed favorably, and the main frame such as a pillar or a girder can be left healthy. In the present specification, a steel material having a yield point much lower than that of a general building steel material is collectively referred to as “extremely low yield point steel”. That is, in the present specification, the “extremely low yield point steel” encompasses a wide concept including so-called “extremely mild steel” and “low yield point steel”.

[0006]

In the above-mentioned stud type vibration damping device, a large bending rigidity must be ensured in order to improve the shearing force that is to be applied and, consequently, the vibration damping efficiency. Further, in order to ensure a large bending rigidity, it is necessary to increase the formation (found width) of a stud having an H-shaped cross section, for example. On the other hand, floor plans are often common due to restrictions on the planar use of the building, and studs as vibration damping devices are usually arranged so as to extend vertically along each layer.

When studs having high flexural rigidity and rigidly joined at both ends are arranged in a continuous layer, these studs extend in a cantilever form from the lowermost layer to the uppermost layer, and are generated in each stud. The bending moment is affected by the overall bending moment of the cantilever. Therefore, particularly in the case of studs arranged relatively low, a very large bending moment is to be borne. As a result, in the studs arranged relatively lower, the bending deformation becomes more dominant than the shear deformation, and there is a disadvantage that the vibration damping efficiency is reduced. In addition, there is a disadvantage that it is practically difficult to elastically design the flange portion with respect to a large bending moment generated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a stud type damper having a high vibration damping efficiency and capable of bearing a large shear force while favorably suppressing the magnitude of a bending moment. It is intended to provide a vibration device.

[0009]

According to a first aspect of the present invention, there is provided a vibration damping device having a form of a stud attached between a pair of opposing beam members. At least a part of the stud is constituted by a hysteresis damping member for absorbing vibration energy input to the structure as a hysteresis energy, and one end of the stud and one of the pair of beam members Are joined so as to transmit a bending moment in a plane including the pair of beam members, and the other end of the stud and the other beam member of the pair of beam members are Provided is a vibration damping device which is joined so as not to substantially transmit a bending moment.

According to a preferred aspect of the first invention, the other end of the stud has a pair of bearing surfaces spaced apart along the horizontal direction, and the other beam member includes the pair of support members. A pair of bearing surfaces formed to abut each of the bearing surfaces, and a contact between the pair of bearing surfaces of the stud and the pair of bearing surfaces of the other beam member reduces bending moment in the plane. Transmitting shear forces in the plane without substantially transmitting. In this case, the other end of the stud has a pair of plate members or one plate member protruding toward the other beam member, and the other beam member is provided at the other end of the stud. It has one plate member or a pair of plate members projecting toward each other, and the pair of plate members is attached such that a pair of opposed end surfaces thereof come into contact with a pair of end surfaces of the one plate member. Is preferred. Furthermore, in this case, between the pair of plate members or one plate member and the other beam member, and between the one plate member or the pair of plate members and the other end of the vibration damping device. It is preferable that a predetermined interval is secured.

According to a second aspect of the present invention, there is provided a vibration damping device having a form of a stud mounted between a pair of opposing beam members, wherein the stud is one of the pair of beam members. The first end of which is rigidly connected to one of the beam members
A stud, and a second stud having one end rigidly connected to the other beam member of the pair of beam members, and the other end of the first stud and the second stud The other end is
The first and second studs are joined so as not to substantially transmit a bending moment in a plane including the pair of beam members, and at least a part of the first stud and the second stud are used as history energy as vibration energy. Provided is a vibration damping device comprising a hysteresis damping member for absorbing.

According to a preferred aspect of the second invention, the other end of the first stud has a pair of bearing surfaces spaced apart along the horizontal direction, and the other end of the second stud. Has a pair of bearing surfaces formed to contact each of the pair of bearing surfaces, and by contact between the pair of bearing surfaces of the first stud and the pair of bearing surfaces of the second stud, Transmitting shear forces in the plane without substantially transmitting bending moments in the plane; In this case, the other end of the first stud has a pair of plate members or one plate member protruding toward the other end of the second stud, and the other end of the second stud. Has one plate member or a pair of plate members protruding toward the other end of the first stud, and the pair of plate members is
It is preferable that the pair of end surfaces facing each other is attached so as to contact the pair of end surfaces of the one plate member. Further in this case, between the pair of plate members or one plate member and the other end of the second stud, and between the one plate member or the pair of plate members and the other end of the first stud. In between,
It is preferable that a predetermined interval is secured.

According to a preferred aspect of the first and second aspects of the present invention, the hysteresis damping member is designed so that shear yielding occurs early before bending yielding. In this case, of the portions constituting the hysteresis damping member, a portion mainly bearing a bending moment is formed of general building steel, and a portion mainly bearing shearing force substantially yields more than general building steel. It is preferable to be formed from a low-point steel material. Further in this case, the hysteresis damping member has a generally H-shaped cross-section with one web portion and a pair of flange portions, wherein the web portions are disposed along the plane and the yield It is preferable to be formed from a low-point steel material.

[0014]

In the first invention of the present invention, one end of a stud constituting a vibration damping device and one beam member are rigidly joined,
The other end and the other beam member are joined by pins. In other words, in the first invention, the stigma or the pedestal of the stud is joined by pins. However, in the present specification, the “pin joint” is a joint configured to transmit a horizontal shear force in a plane including a pair of beam members without substantially transmitting a bending moment in the plane including the pair of beam members. Means

On the other hand, in the second invention, the stud constituting the vibration damping device is constituted by the first stud rigidly joined to one beam member and the second stud rigidly joined to the other beam member. The stud and the second stud are pin-joined. In the first invention and the second invention, at least a part of the studs constituting the vibration damping device is constituted by a hysteresis damping member for absorbing vibration energy input to the structure as hysteresis energy. That is, in the second invention, at least a part of the first stud and the second stud is constituted by the hysteresis damping member.

FIG. 1 is a view schematically showing a bending moment borne by a conventional vibration damping device of a rigid joint with both ends joined at both ends. FIG. 2 is a view schematically showing a bending moment borne by a stigma type joint stud type damping device according to the first invention. FIG. 3 is a view schematically showing a bending moment borne by a column-base pin-jointed stud type vibration damping device according to the first invention. FIG. 4 is a view schematically showing a bending moment borne by the intermediate pin joint stud type vibration damping device according to the second invention. In FIGS. 1 to 4, the shear force borne by the studs of each layer is set so as to be illustratively constant.

As shown in FIG. 1, in the conventional stud type vibration damping device, the studs and the pedestal of the stud are rigidly connected to each other, so that the bending moment generated in each stud is affected by the overall bending moment as a cantilever. Therefore, it can be understood that the stud arranged in the lower layer bears a very large bending moment. On the other hand, as shown in FIGS. 2 and 3, in the vibration damping device according to the first invention, since the studs or the pedestals of the studs are pin-joined, the bending moments generated in each stud become substantially the same. It can be seen that the studs arranged in the lower layer bear much less bending moment than the prior art shown in FIG.

Further, as shown in FIG. 4, in the vibration damping device according to the second invention, since the intermediate portion of the stud is pin-joined, the bending moment generated in each stud is further larger than in the first invention. It turns out that it becomes small (for example, half). As described above, in the vibration damping device of the present invention, it is possible to bear a large shearing force while favorably suppressing the magnitude of the bending moment to be borne. As a result, in a structure in which the vibration damping device of the present invention is incorporated, for example, vibration energy input due to an earthquake is absorbed as hysteresis energy with high vibration damping efficiency, and the vibration energy is reduced while the vibration of the structure is favorably suppressed. It can be attenuated early, and the main structure such as columns or girders can remain healthy.

An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 5 is a diagram modeling and showing the entire structure in which the plurality of vibration damping devices according to the first embodiment of the present invention are incorporated. FIG. 6 is an enlarged view of one typical column-beam frame in which the vibration damping device according to the first embodiment is incorporated. FIG. 7 is an enlarged view schematically showing the configuration of the vibration damping device according to the first embodiment. In the first embodiment, the present invention is applied to a stud-type pin stud stud type vibration damping device.

Stud 1 constituting the vibration damping device of the first embodiment
As shown in FIGS. 5 and 6, in a steel frame structure composed of a plurality of column members 2 and a plurality of beam members 3, the frame member is assembled into a series of column-beam frame portions along the vertical direction. I have. That is, referring to FIG.
It is in the form of a stud mounted between the beam member 3a on the upper floor and the beam member 3b on the lower floor. Each beam member that the studs 1 meet is reinforced by a pair of diagonal reinforcing members 4a and 4b and a column member 5, but the entire beam member reinforced by the pair of diagonal reinforcing members 4 and the column member 5 ( 3 to 5) can be considered to constitute one beam member.

The stud of the stud 1 constituting the vibration damping device is a beam member 3a on the upper floor (strictly speaking, a column member 5 of the beam member 3a).
And its column base is rigidly connected to the lower beam member 3b. That is, the web portion is rigidly joined by using bolts and plates, and the flange portion is rigidly joined by field welding (or by using bolts and plates). Still referring to FIG. 7, the stud 1 is composed of a pair of flange portions 11a and 11b and one web portion 12, and has a generally H-shaped cross section. The flange portions 11a and 11b are formed from a general building steel material, and the web portion 12 is formed from a steel material having a significantly lower yield point than a general building steel material, that is, an extremely low yield point steel.

Further, the web portion 12 has a plurality of stiffening members 12a arranged at intervals in the vertical direction on the front side of the sheet of FIG. 7 and at intervals along the horizontal direction on the back side of the sheet. It is stiffened by the plurality of stiffening members 12b arranged. Thus, for example, when an in-plane bending moment and an in-plane horizontal shear force are applied to the stud 1 during an earthquake, the shear yield of the web portion 12 precedes the bending yield of the flange portion 11, but the web portion 12 is substantially sheared. The input vibration energy is consumed (absorbed) as history energy by stable plastic deformation without bending.

As described above, in the first embodiment, the entire stud 1 constituting the vibration damping device is constituted as a hysteresis damping member,
The stigma is pin-joined to the beam member. In addition,
As described above, the pin connection in the present invention is a connection that transmits a shear force without substantially transmitting an in-plane bending moment. The characteristics of the pin bonding performance required in the present invention are as follows. The shear forces to be transmitted are very large (eg hundreds of tons). The direction of the shear force to be transmitted is only one in the in-plane horizontal direction (however, the directions are both). That is, there is no shear force to be transmitted along the other two principal axis directions (in-plane vertical direction and out-of-plane horizontal direction). The required in-plane rotation angle as a pin is very small (for example, 0.005 radians or less).

In view of the above-described characteristics, the present embodiment proposes pin bonding using metal touch. FIG.
It is a figure which illustrates roughly the structure of the pin joining in 1st Example, (a) is an enlarged view of the pin joining part (A part of FIG. 6), (b) is the perspective view. As shown in FIG. 8, the column member 5 of the beam member 3a on the upper floor has a plate member 21 protruding toward the stud 1 constituting the vibration damping device.
But it is attached by factory welding. On the other hand, a pair of plate members 22 and 23 projecting toward the beam member 3a are attached to the capital of the stud 1 by field welding. As clearly shown in FIG. 8B, the plate members 21 to 23 are arranged so as to extend in the horizontal direction, and the thickness direction and the vertical direction coincide with each other.

In this case, one end face (bearing surface) 21a of the plate member 21 attached to the beam member 3a and one end face 22a of the one plate member 22 attached to the stud 1 side have a metal touch. ), And the plate member 22 is welded in place. Further, the other end surface 21b of the plate member 21 attached to the beam member 3a side
In-situ welding of the plate member 23 is performed such that the metal contact between the plate member 23 and one end surface 23a of the other plate member 23 attached to the stud 1 side. A pair of plate members 2
Since the welds 2 and 23 face down, the management of the field welds is relatively easy. In addition, between the plate member 21 attached to the beam member 3a side and the stud 1, and the stud 1
A pair of plate members 22 and 23 attached to the side
A predetermined interval (clearance) between the beam member 3a
Is secured. Thus, in the pin bonding of the present embodiment, by forming the metal touch and securing the predetermined clearance, it is possible to transmit only the in-plane horizontal shear force without substantially transmitting the in-plane bending moment. .

As described above, in the first embodiment, the studs of the studs constituting the vibration damping device are pin-joined to the opposing beam members, so that the magnitude of the bending moment to be borne can be suppressed well. , Can bear large shearing force. As a result, in the structure in which the vibration damping device of the present embodiment is incorporated, for example, vibration energy input by an earthquake is absorbed as hysteresis energy with high vibration damping efficiency, and the vibration energy Decay early,
Main frames such as pillars or girders can be left healthy.

FIG. 9 is a diagram showing a model of an entire structure in which a plurality of vibration damping devices according to a second embodiment of the present invention are incorporated. FIGS. 10A and 10B are diagrams schematically illustrating the configuration of the pin connection in the second embodiment. FIG. 10A is an enlarged view of the pin connection portion, and FIG. 10B is a perspective view thereof. Second
The embodiment is similar to the first embodiment. However,
The first embodiment is basically different from the first embodiment in that the stigmas of the studs are pin-joined, whereas the second embodiment is basically such that the studs of the studs are pin-joined. Therefore, in the second embodiment, a pin joint having a basically similar configuration to that of the first embodiment is adopted, but a necessary modification is added according to the column base pin joint.

As shown in FIG. 10, the beam members on the lower floor include
A plate member 31 protruding toward the stud 1 constituting the vibration damping device is attached by field welding. On the other hand, a pair of plate members 32 and 33 projecting toward the beam member are attached to the column base of the stud 1 by factory welding. In this case, one end surface 31a of the plate member 31 and one end surface 32a of the plate member 32 make a metal touch, and the other end surface 3a of the plate member 31
Field welding of the plate member 31 is performed so that 1b and one end surface 33a of the plate member 33 make a metal touch. Since the welding of the plate member 31 is directed downward, the management of the on-site welding is relatively easy.

Note that, between the plate member 31 and the stud 1,
A predetermined clearance is secured between the pair of plate members 32 and 33 and the beam member, as in the first embodiment. Thus, also in the pin joining of the second embodiment, it is possible to transmit only the in-plane horizontal shear force without substantially transmitting the in-plane bending moment. As a result, also in the case of the second embodiment, as in the first embodiment, a large shearing force can be borne while favorably suppressing the magnitude of the bending moment borne.

Various modifications other than the first and second embodiments described above are possible within the scope of the present invention. Hereinafter, basic variations of the present invention will be comprehensively described with reference to FIGS. In addition,
11 to 21, hatched portions represent hysteresis damping members (the same applies to FIGS. 5 and 9). FIG.
In FIGS. 1 to 21, circles represent pin bonding (the same applies to FIGS. 2 to 4, 5 and 9). In FIG. 11, the entire stud 1 that constitutes the vibration damping device is formed of a hysteresis damping member, and the stigma is pin-joined. This is a type corresponding to the first embodiment.

In FIG. 12, the entire stud 1 constituting the vibration damping device is constituted by a hysteresis damping member, and its pillar is joined with a pin. This is a type corresponding to the second embodiment. FIG.
In 3, the stud 1 constituting the vibration damping device is constituted by a first stud 1a and a second stud 1b, and the first stud 1a and the second stud 1 are formed.
b is pin-joined. Further, the entirety of the first stud 1a and the entirety of the second stud 1b are both constituted by a hysteresis damping member.

In FIG. 14, only a part (upper part) of the stud 1 constituting the vibration damping device is constituted by the hysteresis damping member, and the stigma is pin-joined. In this case, as shown in FIG. 15, a pair of diagonal reinforcing members 4a
And 4b can also be added. In FIG. 16, only a part (lower part) of the stud 1 constituting the vibration damping device is constituted by the hysteresis damping member, and its pillar is joined by a pin.
In this case, as shown in FIG. 17, a pair of diagonal reinforcing members 4a and 4b can be additionally provided to the beam member on the upper floor.

In FIG. 18, the stud 1 constituting the vibration damping device is composed of an upper first stud 1a and a lower second stud 1b, and the first stud 1a and the second stud 1b are joined by pins. . Then, only the entirety of the lower second stud 1b is constituted by the hysteresis damping member. In FIG. 19, the studs 1 constituting the vibration damping device are composed of an upper first stud 1a and a lower second stud 1b.
And the first stud 1a and the second stud 1b are joined by pins. And only the entire upper first stud 1a is constituted by the hysteresis damping member.

In FIG. 20, the stud 1 constituting the vibration damping device is constituted by an upper first stud 1a and a lower second stud 1b, and the first stud 1a and the second stud 1b are joined by pins. . And only a part (upper part) of the lower second stud 1b is constituted by the hysteresis damping member. In FIG. 21, the stud 1 constituting the vibration damping device is composed of an upper first stud 1a and a lower second stud 1b, and the first stud 1a and the second stud 1b are pin-joined. And only a part (lower part) of the upper first stud 1a is constituted by the hysteresis damping member.

In each of the above-described embodiments, the vibration damping device of the present invention is applied to a steel frame structure. However, the present invention is applied to a structure other than a steel frame and a structure other than a frame structure. The present invention can also be applied to the present invention. Further, in each of the above-described embodiments, the present invention is applied to a vibration damping device of a shear yield precedence type. Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments and the modifications, and various other modifications are possible within the scope of the present invention.

[0036]

As described above, the vibration damping device of the present invention can bear a large shear force while favorably suppressing the magnitude of the bending moment. As a result, in a structure in which the vibration damping device of the present invention is incorporated, for example, vibration energy input due to an earthquake is absorbed as hysteresis energy with high vibration damping efficiency, and the vibration energy is reduced while the vibration of the structure is favorably suppressed. It can be attenuated early, and the main structure such as columns or girders can remain healthy.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a bending moment borne by a conventional vibration damping device of a both-end rigidly joined stud type.

FIG. 2 is a view schematically showing a bending moment borne by a stigma type joint stud type vibration damping device according to the first invention.

FIG. 3 is a diagram schematically showing a bending moment borne by a column-base pin-jointed stud type vibration damping device according to the first invention.

FIG. 4 is a view schematically showing a bending moment borne by an intermediate pin joint stud type vibration damping device according to a second invention.

FIG. 5 is a diagram showing a model of an entire structure in which a plurality of vibration damping devices according to the first embodiment of the present invention are incorporated.

FIG. 6 illustrates a vibration damping device according to a first embodiment.
It is a figure which expands and shows two typical column-beam frame parts.

FIG. 7 is an enlarged view schematically showing a configuration of the vibration damping device according to the first embodiment.

FIGS. 8A and 8B are diagrams schematically illustrating the configuration of pin bonding in the first embodiment, where FIG. 8A illustrates a pin bonding portion (A in FIG. 6);
(B) is an enlarged view of FIG.

FIG. 9 is a diagram showing a model of an entire structure in which a plurality of vibration damping devices according to a second embodiment of the present invention are incorporated.

FIGS. 10A and 10B are diagrams schematically illustrating the configuration of pin bonding in the second embodiment, where FIG. 10A is an enlarged view of a pin bonding portion and FIG. 10B is a perspective view thereof.

FIG. 11 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 12 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 13 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 14 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 15 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 16 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 17 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 18 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 19 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 20 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

FIG. 21 shows a basic variation of the present invention.
It is a figure explaining comprehensively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stud (damping device) 2 Column member 3 Beam member 4 Diagonal reinforcing member 5 Support member 11 Flange part 12 Web part 21-23 Plate member 31-33 Plate member

Claims (11)

[Claims] 1. A vibration damping device having a form of a stud mounted between a pair of opposing beam members, wherein at least a part of the stud absorbs vibration energy input to a structure as history energy. One end of the stud and one of the pair of beam members transmit a bending moment in a plane including the pair of beam members. The other end of the stud and the other beam member of the pair of beam members are joined so as not to substantially transmit the bending moment in the plane. Shaking device. 2. The other end of the stud has a pair of bearing surfaces spaced apart along a horizontal direction, and the other beam member is in contact with each of the pair of bearing surfaces. Having a pair of bearing surfaces formed, by contact between the pair of bearing surfaces of the stud and the pair of bearing surfaces of the other beam member, without substantially transmitting the bending moment in the plane, The vibration damping device according to claim 1, wherein the shear force in the plane is transmitted. 3. The other end of the stud has a pair of plate members or one plate member protruding toward the other beam member, and the other beam member is the other end of the stud. A plate member or a pair of plate members protruding toward the portion, and the pair of plate members are attached such that a pair of opposed end surfaces thereof are in contact with a pair of end surfaces of the one plate member. The vibration damping device according to claim 2, wherein: 4. A method according to claim 1, wherein said pair of plate members or one plate member and said other beam member and between said one plate member or pair of plate members and the other end of said vibration damping device. The vibration damping device according to claim 3, wherein a predetermined interval is secured. 5. A vibration damping device having a form of a stud attached between a pair of opposing beam members, wherein the stud is one of a pair of beam members with respect to one of the pair of beam members. A first stud having an end rigidly joined thereto, a second stud having one end rigidly joined to the other beam member of the pair of beam members, and the other of the first studs And the other end of the second stud are joined so as not to substantially transmit a bending moment in a plane including the pair of beam members, and at least the first stud and the second stud. Some are
A vibration damping device comprising a hysteresis damping member for absorbing vibration energy input to a structure as hysteresis energy. 6. The other end of the first stud has a pair of bearing surfaces spaced apart in the horizontal direction, and the other end of the second stud has a bearing surface of the pair of bearing surfaces. It has a pair of bearing surfaces formed so as to contact each other, and the contact between the pair of bearing surfaces of the first stud and the pair of bearing surfaces of the second stud substantially reduces the bending moment in the plane. 6. The vibration damping device according to claim 5, wherein the shear force in the plane is transmitted without transmitting the shear force. 7. The other end of the first stud is connected to the second stud.
It has a pair of plate members or one plate member protruding toward the other end of the stud, and the other end of the second stud protrudes toward the other end of the first stud. One plate member or a pair of plate members, wherein the pair of plate members are attached such that a pair of opposed end surfaces thereof are in contact with a pair of end surfaces of the one plate member. The vibration damping device according to claim 6. 8. The end between the pair of plate members or one plate member and the other end of the second stud, and the one end of the one plate member or pair of plate members and the other end of the first stud. 8. A vibration damping device according to claim 7, wherein a predetermined interval is secured between the vibration control device and the device. 9. The vibration damping device according to claim 1, wherein the hysteresis damping member is designed such that shear yielding occurs early before bending yielding. . 10. The part of the hysteresis damping member, which mainly bears a bending moment, is made of general building steel, and the part which mainly bears shearing force is substantially more substantial than general building steel. The vibration damping device according to claim 9, wherein the vibration damping device is formed of a steel material having a low yield point. 11. The hysteresis damping member has a generally H-shaped cross section with one web portion and a pair of flange portions, wherein the web portions are disposed along the plane, and The vibration damping device according to claim 10, wherein the vibration damping device is formed of a steel material having a low yield point.