JP5325127B2 - Damping device and partition wall using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damper excellent in damping performance, and to provide a partition wall. <P>SOLUTION: The damper 1, which is mounted between upside and downside horizontal members, includes: a displacement unit 4 which constitutes a four-link rotary linkage constituted by rotatably and pivotally connecting an upper side link 10 elongated in an almost horizontal direction, a lower side link 11 provided below the upper side link 10, and a pair of end side links 13 and 14 for joining them together; an upper side tension applying means 5 which transfers a lateral force of the upside horizontal member to the upper side link 10 and which pulls the upper side link 10 upward; a lower side tension applying means 6 which transfers a lateral force of the downside horizontal member to the lower side link 11 and which pulls the lower side link 11 downward; a supporting portion 7 which includes a first supporting piece 7A provided in the one link of the displacement unit, and a second supporting piece 7B provided in the link different from the link provided with the first supporting piece 7A and facing the first supporting piece 7A; and a viscoelastic body 8 which is fixed between the first and second supporting pieces 7A and 7B. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a vibration damping device having excellent vibration damping performance and a partition wall using the vibration damping device.

  In recent years, various devices for attenuating vibration generated in a building have been proposed. For example, in the following Patent Document 1, it is proposed that shear deformation generated between upper and lower beams of a building is transmitted to a viscoelastic body to absorb vibration energy. Patent Document 2 below proposes that a mass unit having a predetermined natural frequency is disposed on the ceiling of a building to absorb vibration energy.

JP 2006-169952 A JP 2005-188272 A

  However, in the configuration of Patent Document 1, slight vibration such as traffic vibration having a small amplitude is absorbed by play of a fastening portion of each member, and the shear deformation is not sufficiently generated in the viscoelastic body. The vibration effect may not be obtained.

  In addition, it is necessary for the structure as in Patent Document 2 to match the natural frequency of the building and the mass unit. However, if the vibration characteristics of the building change due to deterioration over time or changes in lifestyle, the original effect is exhibited. It becomes impossible and maintenance is necessary. Further, since it is necessary to install a plurality of mass units of several hundred kilometers per vehicle depending on the building size, there is a problem of cost including reinforcement of the roof surface to be installed.

  The present invention has been devised in view of the above circumstances, and not only attenuates vibrations at the time of an earthquake at an early stage, but also can suppress vibrations caused by traffic vibrations and strong winds with high responsiveness. The main purpose is to provide a device and a partition wall using the device.

  The invention according to claim 1 of the present invention is attached between an upper horizontal member extending horizontally on an upper side of a building and a lower horizontal member extending horizontally below the upper horizontal member, and A vibration damping device that absorbs a horizontal force between an upper horizontal member and a lower horizontal member, an upper side link extending substantially horizontally, a lower side link extending substantially horizontally below, and an upper and lower link therebetween. A displacement unit that forms a four-bar rotation chain in which a pair of end-side links that are connected to each other are rotatably connected, and transmits the lateral force of the upper horizontal member to the upper link of the displacement unit and the upper link. The upper side tension applying means for pulling the upper side, the lateral force of the lower horizontal member transmitted to the lower side link of the displacement unit and the lower side tension applying means for pulling the lower side link downward, 4 of the displacement unit A first support piece provided on one of the links, and a second support piece provided on a link different from the link provided with the first support piece and facing the first support piece. And a viscoelastic body sandwiched and fixed between the first support piece and the second support piece of the support part.

  The invention according to claim 2 is the vibration damping device according to claim 1, wherein the first support piece and the second support piece are provided in links facing each other.

  The invention according to claim 3 is the vibration damping device according to claim 2, wherein the first support piece is provided on the upper link, and the second support piece is provided on the lower link.

  According to a fourth aspect of the present invention, the first support piece is provided on one of the end side links, and the second support piece is provided on the other end side link. It is a vibration control device.

  The invention according to claim 5 is the vibration damping device according to claim 4, wherein the four-bar rotating chain is a parallel link mechanism, and the upper side link has a longer link length than the end side link. .

  According to a sixth aspect of the present invention, in the vibration damping device according to any one of the first to fifth aspects, the upper side tension applying means and the lower side tension applying means comprise braces whose lengths can be adjusted.

  In the invention according to claim 7, the upper side tension applying means has a lower end connected to the upper side link and an upper end extending between the upper horizontal member and the lower horizontal member. It is a damping device in any one of Claims 1 thru | or 6 connected with a material.

  In the invention according to claim 8, the lower-side tension applying means has an upper end connected to the lower-side link and a lower end extending between the upper horizontal member and the lower horizontal member. It is a damping device in any one of Claims 1 thru | or 7 connected with a material.

  The invention according to claim 9 is the vibration damping device according to claim 7 or 8, wherein the saddle member is attached to a stud extending vertically in the partition wall of the building.

  The invention according to claim 10 is a partition wall characterized in that the vibration damping device according to any one of claims 1 to 9 is housed inside, and both side surfaces are covered with face materials. is there.

  The vibration damping device of the present invention pivots about an upper side link that extends substantially horizontally, a lower side link that extends substantially horizontally below, and a pair of end side links that extend vertically between them. It has a displacement unit that forms a linked four-bar rotation chain. The upper side link of the displacement unit is pulled upward while the lateral force of the upper horizontal member is transmitted by the upper side tension applying means. Further, the lower side link of the displacement unit is pulled downward while the lateral force of the lower horizontal member is transmitted by the lower side tension applying means. A viscoelastic body is interposed between the first support piece attached to one of the four links of the displacement unit and the second support piece attached to the other link and facing the first support piece. It is fixed in a sandwiched state.

  In such a vibration damping device, the displacement unit forms a four-bar rotation chain, so that it can be easily deformed with a small force. Further, as a result of the upper side link and the lower side link being pulled upward and downward, respectively, it is possible to substantially eliminate the play of the counter unit around the displacement unit. Therefore, even with a small horizontal force between the upper horizontal member and the lower horizontal member, the displacement unit can be efficiently deformed to shear the viscoelastic body, and the vibration energy associated with the horizontal force can be reliably absorbed. For this reason, the displacement unit of the present invention can absorb vibration energy with good responsiveness not only to large vibrations but also fine vibrations, and can attenuate the vibrations at an early stage.

It is a front view of the partition wall using the damping structure which shows embodiment of this invention. It is the side view. It is a fragmentary perspective view explaining the runner and stud of a partition wall. It is an enlarged front view of a displacement unit. FIG. 5 is a right side view of FIG. 4. It is a disassembled perspective view of a displacement unit. It is a front view which shows the state which the displacement unit deform | transformed. It is an AA end view of FIG. It is an enlarged front view of the displacement unit which shows other embodiment of this invention. It is the right view. It is BB sectional drawing of FIG. It is an enlarged front view which shows the state which the displacement unit deform | transformed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the vibration damping device 1 of the present embodiment includes, for example, an upper horizontal member 2 that extends horizontally on the upper side of a building such as a house, and a lower portion horizontally than the upper horizontal member 2. It is attached between the extended lower horizontal member 3 and absorbs the horizontal force between the upper horizontal member 2 and the lower horizontal member 3 to attenuate the vibration.

  In the present embodiment, the vibration damping device 1 is provided inside the partition wall W of the industrialized house.

  As shown in FIGS. 1 and 3, the partition wall W has a substantially groove shape in cross section and extends horizontally with the groove portion facing inward, and extends vertically between the lower runner 30 and the runner 30. For example, it is composed of a substantially rectangular light iron wall base material made of a pipe-shaped stud 31 and a face material 33 made of, for example, a gypsum board covering both side surfaces of the wall base material. i is formed. And the damping device 1 of this embodiment is stored in this hollow part i.

  In addition, as shown in FIG. 2, the upper runner 30 is fixed to the ceiling plate 2 a of the first floor portion as the upper horizontal member 2 in the partition wall W by screws or nails. On the other hand, the lower runner 30 is fixed to the floor material 3a of the first floor, which is the lower horizontal member 3, with screws or nails. However, the vibration damping device 1 of the present invention is not limited to such an attachment mode.

  As shown in FIGS. 1 and 4, the vibration damping device 1 includes a displacement unit 4, an upper-side tension applying means 5 disposed between the displacement unit 4 and the upper horizontal member 2, and the displacement A lower side tension applying means 6 disposed between the unit 4 and the lower horizontal member 3, a support portion 7 provided in the displacement unit 4, and a viscoelastic body 8 fixed to the support portion 7. Consists of including.

  As shown in FIG. 4, the displacement unit 4 includes an upper link 10 that extends substantially horizontally, a lower link 11 that extends substantially horizontally below, and an upper link 10 and a lower link 11. It includes a pair of left and right end side links 13, 14 extending up and down, and each of these links is connected in a ring shape with a rotatable pair 15 so as to form a four-node rotating chain. . Since the links 10 and 11 are “substantially horizontal”, a deviation of about 10 ° with respect to the horizontal line can be allowed.

  In the present embodiment, the upper link 10 and the lower link 11 have the same link length. Also, the end side links 13 and 14 on both sides have the same link length. Thereby, the displacement unit 4 of this embodiment comprises the parallel link mechanism as a four-bar rotation chain.

  5 and 6, the upper side link 10 of this embodiment includes, for example, a front plate portion 10a that extends in a vertical plane and has a substantially rectangular plate shape, and the front plate portion 10a. And a rear plate portion 10b fixed through a spacer 10c. The front plate portion 10a and the rear plate portion 10b have substantially the same shape, but the spacer 10c is formed smaller than these. As a result, a space S1 sandwiched between the front plate portion 10a and the rear plate portion 10b is formed below the spacer 10c of the upper link 10. In addition, a pair of through holes 16 penetrating the space S1 are formed on the lower side and both side portions of the upper side link 10.

  The lower link 11 also includes, for example, a front plate portion 11a that extends in a vertical plane and has a substantially rectangular plate shape, and a rear plate portion 11b that is fixed to the front plate portion 11a via a spacer 11c. The front plate portion 11a and the rear plate portion 11b are formed in substantially the same shape, and the spacer 11c is formed in a substantially convex shape in front view in this embodiment. As a result, a pair of spaces S2 and S2 sandwiched between the front plate portion 11a and the rear plate portion 11b are formed on both sides and the upper side of the spacer 11c. A pair of through holes 18 penetrating the space S2 are formed on the upper side and both side portions of the lower link 11.

  The end portion side links 13 and 14 have a vertically long plate shape extending vertically in the vertical plane. Further, the end side links 13 and 14 are formed with through holes 19 and 20 in the vertical direction, respectively. And the upper end side of each edge part side link 13 and 14 is inserted in space S1 of the upper side link 10, and the through-holes 16 and 19 are rotatably connected with the volt | bolt B1 via a washer etc. . Similarly, the lower ends of the end side links 13 and 14 are inserted into the space S2 of the lower side link 11, and the through holes 18 and 20 are rotatably connected via bolts B1 via washers or the like. The

  As a result, the displacement unit 4 has a four-bar rotation in which the upper link 10, the lower link 11, and the pair of end links 13 and 14 that extend between the upper link 10 and the lower link 11 are connected by a pair 15. A chain can be constructed. In addition, although each link consists of metal materials, it cannot be overemphasized that the specific shape, length, etc. can be deform | transformed into various aspects, without being limited to the aspect of illustration.

  The upper side tension applying means 5 is composed of a pair of braces 5A and 5B having, for example, turnbuckles 22 that are adjustable in length. Each brace 5A, 5B extends obliquely upward in a direction away from the lower end portion toward the upper end portion. The lower ends of the brace members 5A and 5B are connected and fixed to the through holes 17 of the upper link 10 of the displacement unit 4 by bolts B2, respectively.

  In addition, as shown in FIGS. 1 and 3, the upper end portions of the brace members 5A and 5B are attached to the upper side of the brace material 9 extending between the upper horizontal member 2 and the lower horizontal member 3 in this embodiment. They are connected (welded) via a metal fitting 32. As shown in FIG. 3, the saddle material 9 is made of a groove-type light iron material, and the web 9a is brought into contact with a stud 31 which is a base material of the partition wall W and is integrally attached with screws or the like. Yes.

  Similarly, the lower side tension applying means 6 is also composed of a pair of braces 6A and 6B having, for example, a turnbuckle 22 whose length can be adjusted. Each brace 6A, 6B extends obliquely downward in a direction away from the upper end portion toward the lower end portion. Each brace 6A, 6B has an upper end connected to the through hole 23 of the lower link 11 by a bolt B3, and a lower end connected to the lower end of the saddle member 9 via a mounting bracket 32 (welding). )

  Therefore, the upper side link 10 of the displacement unit 4 is pulled upward by the upper side tension applying means 5 and the lower side link 11 is pulled downward by the lower side tension applying means 6. Thereby, the play (backlash) of the turning pair 15 around the displacement unit 4 can be substantially eliminated. In addition, the upper side tension | tensile_strength provision means 5 and the lower side tension | tensile_strength provision means 6 can adjust suitably the tension | tensile_strength which pulls the displacement unit 4 up and down by adjusting the length using the turnbuckle 22, respectively.

  The support portion 7 includes a first support piece 7A provided on one of the four links 10, 11, 13, and 14 of the displacement unit, and the link provided with the first support piece 7A. The second support piece 7B is provided on a different link and faces the first support piece 7A. The viscoelastic body 8 is fixed between the support pieces 7A and 7B.

  In the present embodiment, the first support piece 7 </ b> A is provided on the upper side link 10. Specifically, the upper end portion of the first support piece 7A is inserted into the space S1 at a substantially intermediate position in the horizontal link length direction of the upper side link 10 and fixed by the bolt B4. The lower end of the first support piece 7A protrudes into a substantially rectangular space surrounded by the links 10, 11, 13, and 14. However, the first support piece 7A protrudes downward with a length that does not interfere with the lower link 11.

  On the other hand, the second support piece 7A is provided on the lower link 11 in the present embodiment. Specifically, the lower end portion of the second support piece 7B is bolted to the substantially intermediate position in the horizontal link length direction of the lower link 11 and to the outer surfaces of the front plate portion 11a and the rear plate portion 11b. It is fixed. The second support piece 7B is also disposed so as to protrude into a substantially rectangular space surrounded by the links 10, 11, 13, and 14 and to face the first support piece 7A in parallel with each other. Note that the upper end portion of the second support piece 7B also protrudes upward with a length that does not interfere with the upper link 10. Thus, it is desirable that the first support piece 7A and the second support piece 7B are provided on the links 10 and 11 facing each other.

  Various viscoelastic bodies 8 can be employed, and rubber is employed in the present embodiment. When shear deformation is applied to the viscoelastic body 8, stress and strain draw a hysteresis loop, and energy corresponding to the area surrounded by the loop can be converted into heat and absorbed.

  As the viscoelastic body 8, a viscoelastic rubber (damping rubber) having a large loss tangent tan δ and a high damping property is preferably used. Examples of such viscoelastic rubber (damping rubber) include natural rubber, styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), butadiene rubber (BR), isoprene rubber (IR), butyl rubber (IIR), and halogenated. Various additives for exhibiting high damping properties can be blended with one or more rubber polymers of butyl rubber (X-IIR) and chloroprene rubber (CR). Various additives such as carbon black are known as additives that exhibit high attenuation.

  The viscoelastic body 8 of the present embodiment uses a rubber sheet having a substantially rectangular shape and a constant thickness. Such a sheet-like viscoelastic body 8 is obtained, for example, by kneading a rubber polymer and an additive using, for example, a closed kneader to obtain a rubber composition, which is formed into a sheet by using a roller head extruder or the like. It can be obtained by forming and vulcanizing and forming one or a plurality of sheets punched into a predetermined shape therefrom.

  Then, such a sheet-like viscoelastic body 8 is sandwiched between the first support piece 7A and the second support piece 7B (this is provided at two positions on both sides of the first support piece 7A) and both sides thereof. The surface is fixed. For fixing the viscoelastic body 8 and the support portion 7, for example, any one of a method using the self-adhesive force of the viscoelastic body 8, a method using a normal adhesive, or vulcanization bonding can be employed. Thereby, between the 1st support piece 7A attached to the upper side link 10 of the displacement unit 4, and the 2nd support piece 7B provided in the lower side link 11, the sheet-like shape which makes the inside of a perpendicular | vertical plane planar. The viscoelastic body 8 is fixed in a sandwiched state. In addition, although the thickness etc. of the viscoelastic body 8 should just be suitably determined according to the scale etc. of the building which uses this damping device 1, it is formed with about 3 mm in this embodiment.

The operation of the vibration damping device 1 of the present embodiment configured as described above will be described.
When a horizontal force acts between the upper horizontal member 2 and the lower horizontal member 3, the horizontal force is applied to the upper side tension applying means 5 and the lower side tension applying means 6 via the runner 30, the stud 31, and the saddle material 9. To be told.

  Further, the displacement unit 4 that is supported by being pulled up and down by the upper side tension applying means 5 and the lower side tension applying means 6 forms a rotatable four-bar rotation chain. Therefore, the displacement unit 4 can be easily deformed even with a small external force as shown in FIG. 7 while having a simple structure. Therefore, the displacement unit 4 can be reliably secured even by a slight horizontal force (relative horizontal displacement) between the upper horizontal member 2 and the lower horizontal member 3 transmitted through the upper side tension applying unit 5 and the lower side tension applying unit 6. Transforms into a diamond. As the displacement unit 4 is deformed, the viscoelastic body 8 sandwiched between the first support piece 7A and the second support piece 7B undergoes shear deformation, as shown in FIGS. Vibration energy can be absorbed by the hysteresis loss. Thereby, the vibration is attenuated early.

  Moreover, as a result of the upper side link 10 and the lower side link 11 being pulled upward and downward, respectively, it is possible to substantially eliminate the play of the turning pair of the displacement unit 4. For this reason, in the vibration damping device 1 of the present invention, the displacement unit 4 is deformed with good response to small vibrations such as traffic vibrations and fine vibrations caused by strong winds, and shear deformation is surely generated in the viscoelastic body. It can absorb energy.

  Further, the vibration damping device 1 of the present embodiment is not provided with the upper side tension applying means 5 and the lower side tension applying means 6 being directly attached to a structural frame such as a beam of a building, but as a stud that forms the base material of the partition wall. The vibration control device 1 is made self-supporting by being fixed to the attached brazing material 9. In such a construction structure, the tension of the upper side tension applying means 5 and the lower side tension applying means 6 does not directly act on a structural housing such as a beam. This is useful for suppressing bending deformation of a beam or the like. Furthermore, such a construction method allows the vibration control device 1 to be installed in a place where there is no frame such as a beam, thereby increasing the degree of freedom in planning, and can be easily controlled using a stud on an existing partition wall. The vibration device 1 can be retrofitted. However, it goes without saying that the upper side tension applying means 5 and the lower side tension applying means 6 may be coupled to a beam material or the like.

9 to 11 show another embodiment of the present invention.
In this embodiment, the first support piece 7A is, for example, the front side of the left side (one) end side link 13 in the drawing (in FIG. 9, the front side of the paper surface is the front side, and the back side of the paper surface is the rear side). The second support piece 7B is fixed to the rear side of the right side (the other) end side link 14 in the drawing. Thus, the support pieces 7A and 7B are arranged to face each other alternately and with a gap therebetween without interfering with each other. The viscoelastic body 8 is sandwiched and fixed between the facing surfaces of the first support piece 7A and the second support piece 7B.

  Also in such an embodiment, the displacement unit 4 is reliably deformed by the horizontal force between the upper horizontal member 2 and the lower horizontal member 3. In the displacement unit 4 of the present embodiment, the horizontal shear displacement is converted in the vertical direction to shear the viscoelastic body 8, and the force (vibration energy) can be absorbed by the hysteresis loss. In the present embodiment, in the displacement unit 4, the link length a of the upper side link 10 (and the lower side link 11) is formed larger than the link length b of the end side links 13 and 14. In this example, the link length ratio a / b is about 4.0.

  In such a displacement unit 4, it is possible to amplify the shear displacement by a factor of four compared to the previous embodiment and to apply it to the viscoelastic body 8. In other words, even a smaller horizontal force (microvibration) is preferable in that the viscoelastic body 8 can be reliably subjected to a large shear deformation to absorb vibration energy. The link length ratio a / b is not particularly limited, and can be variously determined according to the scale of the building used and the assumed horizontal force. On the contrary, if it is too large, a large load acts on the brace and the like, so that a reinforcing structure is required and there is a problem in accommodation. From such a viewpoint, when installing on the partition wall etc. of an industrialized house, it is preferable to determine the link length ratio a / b by about 2 to 4, for example.

  In this embodiment, as described above, the viscoelastic body 8 can be amplified to transmit the shear displacement. However, if the shear deformation generated in the viscoelastic body 8 is increased, the viscoelastic body 8 may be damaged or peeled off from the support portion 7. Therefore, as shown in FIG. 12, it is desirable to provide a restricting means for restricting the shear displacement of the viscoelastic body 8 to a certain size.

  When the shear displacement of the viscoelastic body 8 reaches a certain amount (in this embodiment, 3 mm or more corresponding to the thickness of the viscoelastic body 8), this displacement regulating means causes the distal end portion of the first support piece 7A to be the upper side link. 10 and the tip of the second support piece 7B abuts on the upper edge surface 11e of the lower link 11 to restrain the deformation of the displacement unit 4. Thereby, damage caused by excessive shear deformation in the viscoelastic body 8 can be effectively prevented.

  In the partition wall W incorporating the vibration damping device 1 of the present embodiment, as shown in FIG. 1, the face members 33 respectively arranged on both side surfaces are divided into two, for example, with a small gap of about 2 mm. The left and right face members 33A and 33B are arranged independently of each other. In this embodiment, the upper and lower runners 30 are fixed with studs 40 for fixing the face material extending so as not to interfere with the vibration damping device 1. Thereby, at the time of vibration, relative displacement can be created between the left and right face members 22, and the in-plane shear rigidity of the damping wall panel can be prevented from excessively rising. This helps to reliably transmit vibration energy to the viscoelastic body 8. In addition, a face material can also be divided into 2 parts up and down.

  As mentioned above, although embodiment of this invention was described, this invention can be changed and implemented in a various aspect. For example, although the support part 7 showed the aspect comprised by each link and a different body, you may form integrally.

DESCRIPTION OF SYMBOLS 1 Damping apparatus 2 Upper horizontal member 3 Lower horizontal member 4 Displacement unit 5 Upper side tension | tensile_strength provision means 6 Lower side tension | tensile_strength provision means 7 Support part 7A 1st support piece 7B 1st support piece 8 Viscoelastic body 9 Gutter 10 Upper part Side link 11 Lower side link 13, 13 End side link

Claims (10)

The upper horizontal member extending horizontally on the upper side of the building and the lower horizontal member extending horizontally below the upper horizontal member, and between the upper horizontal member and the lower horizontal member A vibration damping device that absorbs horizontal force,
A four-bar rotation chain is formed by pivotably connecting an upper side link that extends substantially horizontally, a lower side link that extends substantially horizontally below, and a pair of end side links that extend vertically between them. Displacement unit,
Upper side tension applying means for transmitting a lateral force of the upper horizontal member to the upper side link of the displacement unit and pulling the upper side link upward;
Lower side tension applying means for transmitting a lateral force of the lower horizontal member to the lower side link of the displacement unit and pulling the lower side link downward;
A first support piece provided on one of the four links of the displacement unit, and a first support piece provided on a link different from the link provided with the first support piece and facing the first support piece. And a viscoelastic body sandwiched and fixed between the first support piece and the second support piece of the support portion.   The vibration damping device according to claim 1, wherein the first support piece and the second support piece are provided on links facing each other.   3. The vibration damping device according to claim 2, wherein the first support piece is provided on the upper side link, and the second support piece is provided on the lower side link.   3. The vibration damping device according to claim 2, wherein the first support piece is provided on one of the end side links, and the second support piece is provided on the other end side link.   5. The vibration damping device according to claim 4, wherein the four-bar rotation chain is a parallel link mechanism, and the upper link has a longer link length than the end link.   6. The vibration damping device according to claim 1, wherein each of the upper side tension applying unit and the lower side tension applying unit includes a brace whose length is adjustable.   The upper side tension applying means has a lower end connected to the upper side link and an upper end connected to a saddle member extending between the upper horizontal member and the lower horizontal member. 6. The vibration damping device according to any one of 6.   The lower side tension applying means has an upper end connected to the lower side link and a lower end connected to a saddle member extending between the upper horizontal member and the lower horizontal member. The vibration damping device according to any one of 7.   The vibration damping device according to claim 7 or 8, wherein the saddle member is attached to a stud extending up and down in a partition wall of the building.   A partition wall characterized in that the vibration damping device according to any one of claims 1 to 9 is housed inside, and both side surfaces are covered with a face material.

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