JP3714077B2 - Damping structure of buildings - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration control structure of a building where bending deformation is dominant, and more particularly to a vibration control structure of a building that attenuates bending deformation energy generated by vibration such as an earthquake.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a bending deformation control type damping structure disclosed in Japanese Patent Laid-Open No. 7-26783 is known as a damping structure that attenuates bending deformation energy of a building caused by an earthquake or the like. This bending deformation control type damping structure includes a core composed of a multi-layered seismic element and an outer peripheral wall portion surrounding the outer periphery and spaced apart. A structure in which a projecting part called a top girder is projected from the top of the core, and a hydraulic damper or a steel damper that imparts damping force to the core is provided as a damping device between the projecting part and the outer peripheral wall part. It is.
[0003]
That is, an outer peripheral wall portion standing upright from the ground as a separate body from the core and an overhang portion projecting from the top of the core are connected via an attenuation device therebetween. Thus, when bending deformation occurs in the core and the outer peripheral wall part due to an earthquake or the like, their relative displacement is input to the damping device and buffered, and the reaction force is output. This reaction force is applied to the core as a damping force of bending deformation energy, and the bending deformation of the core is suppressed and the structure is damped.
[0004]
[Problems to be solved by the invention]
However, in the conventional vibration damping structure of a building, since a hydraulic damper or a steel damper is used as a vibration damping device that performs a vibration damping action, there are the following problems.
When a hydraulic damper is used, the oil filled inside may leak due to deterioration of the seal member and so on, contaminating the surroundings and deteriorating the aesthetics, or the hydraulic pressure may be lowered, making it difficult to obtain a damper effect. there were.
On the other hand, the steel damper is rigidly attached and interposed between the core and the outer peripheral wall portion, and absorbs vibration energy by its elastic-plastic deformation. For this reason, the damper once deformed had to be replaced each time. In addition, since the replacement work is large and time-consuming, a lot of labor has to be spent on maintenance. Furthermore, since the steel damper itself is large-sized, there is a problem that a great amount of cost is required every time it is replaced.
[0005]
Therefore, the present invention has been made in view of such conventional problems, and an object of the present invention is to provide a building damping structure that can obtain a stable damping effect and can be easily maintained at low cost.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the building damping structure according to claim 1 of the present invention includes a vertical frame that is deformed by the input of an external force , a horizontal frame that projects from the vertical frame, and the horizontal frame. between Frames and lower structure located thereunder, a damping structure for a building having a building element that is provided in parallel with the vertical Frame, through the middle of the height direction of the building member comprising at least one friction damper is instrumentation, the friction damper includes a first pressing plate provided on the building member which is suspended from the horizontal rack構側, provided a building member which is erected from the lower structure side A second pressure contact plate, wherein one pressure contact plate forms a pair and the other pressure contact plate is sandwiched from both sides to be polymerized , and a pair is formed between the one pressure contact plate and the other pressure contact plate . it in a state in which the formed friction plate and sliding plate are polymerized The other press-contact plate is provided with a long hole, and the other press-contact plate is provided with a friction plate at the edge of the long hole on the front and back surfaces of the other press-contact plate. The plates are slidably overlapped , and each of the one pressure contact plate and the portion of each slide plate corresponding to the long hole is provided with a hole, respectively, and the hole of the one pressure contact plate, the one of the slide plates A bolt is inserted into the hole, the long hole of the other pressure contact plate, the hole of the other sliding plate, and the hole of the one pressure contact plate, and the nut is tightened to the portion protruding from the one pressure contact plate of the bolt, A bolt axial force is applied between the one pressure contact plate and the other pressure contact plate by the disc spring laminate attached to the bolt, and the first pressure contact plate and the second pressure contact plate are connected to the sliding plate. characterized in that it is configured to relatively move with the sliding of said friction plate
[0007]
That is, a friction damper that generates a frictional resistance force by a relative movement between a horizontal frame projecting from a vertical frame of the building and the lower structure is interposed. Therefore, when bending deformation occurs in the vertical frame of the building due to an external force such as an earthquake, the horizontal frame and the lower structure move relative to each other, and the vibration displacement force is input to the friction damper. At this time, the first pressure contact plate and the second pressure contact plate constituting the friction damper are moved relative to each other, and the input vibration displacement force is converted into the friction resistance force, so that the vibration energy is reduced. can do.
[0008]
In addition, a pair of friction plate and sliding plate is sandwiched between the first pressure contact plate and the second pressure contact plate, and is configured to cause slippage between them. Further, the sliding plate and the friction plate are provided separately from the first pressure contact plate or the second pressure contact plate. For this reason, the sliding plate and the friction plate can be appropriately selected as appropriate without being restricted by the material of the pressure contact plate. That is, the sliding plate and the friction plate can be set so as to obtain a stable friction coefficient and restoring force characteristic intended by the design.
[0009]
Further, since the friction damper is used as the vibration damping member, the oil does not leak like the hydraulic damper, so that the surroundings are not soiled. Furthermore, for the same reason, a stable damping function can be obtained without reducing the hydraulic pressure and reducing the damper effect. In addition, the friction damper converts vibration displacement force into friction resistance force and reduces vibration energy, so it is not necessary to replace the damper every time a vertical frame is deformed like a steel damper, and it is used semipermanently. can do.
[0010]
In the vibration damping structure for a building according to claim 2 of the present invention, the short diameter of each of the long holes is such that the one pressure contact plate and the other pressure contact plate relatively move in two dimensions. It is characterized by being formed to an allowable length .
[0011]
That is, the first pressure contact plate and the second pressure contact plate can be relatively moved two-dimensionally in the vertical direction and the horizontal direction in a state where the bolt axial force is applied. Accordingly, relative to the horizontal deformation that occurs between the upper end of the first press-contact plate and the lower end of the second press-contact plate in accordance with the bending deformation of the vertical frame, it can also be moved relative. Therefore, vibration displacement force due to movement in the horizontal direction as well as in the vertical direction can be converted into frictional resistance force for damping.
[0012]
In the vibration damping structure of the building shown in claim 3 of the present invention, the friction damper with a plurality interposed in the middle in the height direction of the building members, said vertical Frames between these friction dampers It is characterized in that an intermediate horizontal frame overhanging is connected.
[0013]
That is, the friction damper is provided between the horizontal frame and the uppermost intermediate horizontal frame, between the lowermost intermediate horizontal frame and the lower structure, and between the intermediate frames. Therefore, when the entire vertical frame is greatly bent and deformed, a large amount of displacement generated between the horizontal frame and the lower structure is distributed and input to each friction damper. For this reason, it is possible to control even a large vibration without enlarging the damper itself.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1-5 has shown one Embodiment of the damping structure of the building concerning this invention.
[0015]
The vibration damping structure of a building according to the present invention is applied to a building 10 having a particularly large aspect ratio and a building 10 having excellent bending deformation, and is located on the foundation 12 that forms a lower structure located in the center of these buildings. A vertical core 34 that is erected and deforms when an external force is input, a rigid horizontal frame 38 that projects outward from the core 34 to form the top floor of the building 10, and the horizontal frame The building 40 is provided with a pillar 40 as a building member provided in parallel with the core 34 over the foundation 12 at the outer end of 38, and an appropriate space is provided between the pillar 40 and the core 34 in the height direction. It comprises a plurality of floor / beam frames 36 forming 10 floors and ceilings, and a friction damper 8 interposed in a column 40 on a specific floor. That is, the friction damper 8 forms an upper floor portion 40a suspended from the beam frame 36 on the horizontal frame 38 side that forms a specific floor on which the friction damper 8 is interposed, and is located below the upper column portion 40a. It is provided between the lower column part 40b erected from the beam frame 36 on the foundation 12 side.
[0016]
The upper column part 40a and the lower column part 40b are formed of H-shaped steel having the same cross-sectional shape, and are provided vertically with their flanges and webs facing each other. And the friction damper 8 interposed between the upper column part 40a and the lower column part 40b is attached with the same structure with respect to each of a web and a pair of flange. Here, a description will be given of an example of a structure for attaching the friction damper 8 to the web.
[0017]
The upper column part 40a and the lower column part 40b are provided so as to be movable in a direction in which they face each other with their opposing ends spaced apart from each other. And the web of the upper column part 40a comprises the 1st press-contact board 14, and the long hole 14a for bolt penetration mentioned later is formed in this 1st press-contact board 14 along the moving direction. The long holes 14a are formed by arranging two pairs in the length direction of the first pressure contact plate 14 and a pair in the short direction of the long holes 14a.
[0018]
A friction plate 22 made of a composite friction material, which will be described later, is overlaid on both the front and back surfaces of the first pressure contact plate provided with the long holes 14a. The friction plate 22 is formed in a thin plate shape, and has a considerable length along the length direction of the long hole 14 a that forms a set in the length direction of the first pressure contact plate 14. Further, three friction plates 22 are arranged in parallel between the long holes 14a paired in the short direction of the long holes 14a and the outside thereof.
[0019]
Further, on each surface of the friction plate 22 arranged on both the front and back surfaces of the first pressure contact plate 14, a thin plate-like stainless steel slide plate S that is slidably slidably contacted is superposed.
[0020]
On the other hand, a scissor plate 17 having a thickness corresponding to the thickness of the friction plate 22 and the sliding plate S attached to the upper column portion 40a is overlaid on both the front and back surfaces of the web of the lower column portion 40b. One end of the scissors plate 17 and the sliding plate S is overlapped with the sliding plate S, and the other end is overlapped with the scissors plate 17 to form a pair of splice plates between the column portions 40a and 40b. It is handed over. This splice plate forms the second pressure contact plate 15. Therefore, both surfaces of the first pressure contact plate 14 are sandwiched between the pair of second pressure contact plates 15 via the friction plate 22 and the sliding plate S that form a pair. In addition, the second pressure contact plate is arranged in parallel with the first pressure contact plate 14 and consequently the column 40 by the scissors plate 17.
[0021]
As described above, four elongated holes 14a for inserting bolts are formed in the upper column part 40a, and a through hole 19 penetrating the web is formed in the lower column part 40b. Hole portions 21 are formed in the second pressure contact plate 15 and the sliding plate S so as to correspond to the long holes 14 a and the through holes 19, respectively.
[0022]
In the lower column portion 40b, the high-strength bolt 16 is inserted between the two second press-contact plates 15 sandwiching the web, and the nut 18 is screwed to the high-strength bolt 16. Accordingly, the pair of second pressure plates 15 are fixedly attached via the scissors plate 17, and the pair of second pressure plates 15 belong to the lower column part 40b.
[0023]
On the other hand, in the upper column part 40a, the high-strength bolt 16 is inserted through the sliding plate S from one second pressure contact plate 15a sandwiching the first pressure contact plate 14 belonging thereto. The high-strength bolt 16 reaches the opposite side of the first pressure contact plate 14 through a long hole 14 a located in the gap of the friction plate 22. Further, the high-strength bolt 16 is fixed by a nut 18 through the sliding plate S and the second pressure contact plate 15b from the gap between the friction plates 22 on the back surface. That is, the upper column part 40a is attached to the second press contact plates 15a and 15b through the sliding surface 8a of the friction plate 22 and the sliding plate S so as to be movable relative to the second pressing plate 15a.
[0024]
A bolt axial force N is generated by tightening the nut 18, and this axial force N is transmitted between the pair of second press contact plates 15 a and 15 b and acts as a sandwiching force of the first press contact plate 14. Furthermore, the first pressure contact plate 14 and the pair of second pressure contact plates 15a and 15b are set such that relative movement between the first pressure contact plate 14 and the pair of second pressure contact plates 15a and 15b is allowed under the action of the pinching force.
[0025]
Further, in the fastening structure portion by the high-strength bolt 16 and the nut 18, a disc spring laminated body 30 in which a plurality of ring-shaped disc springs are laminated between the head portion 16a of the high-strength bolt 16 and the second press-contact plate 15a. Is provided. In addition, a disc-shaped washer 32 for transmitting the axial force of the high-strength bolt 16 is provided on one end of the disc spring laminated body 30 on the high-strength bolt 16 side. The high-strength bolt 16 passes through the washer 32 through the small-diameter washer 20 that receives the head portion 16 a and is inserted into the hollow interior of the disc spring laminate 30. Further, the high-strength bolt 16 is inserted into the long hole 14 a of the first pressure contact plate 14. On the other hand, a disc-shaped plate washer 33 having the same diameter as the disc spring is provided on the fastening side of the nut 18 so as to overlap the outside of the second pressure contact plate 15b. The nut 18 is screwed onto the high strength bolt 16 via a small washer 20a corresponding to the nut 18 on the plate washer 33.
[0026]
Although the structure for attaching the friction damper 8 to the web has been described above, the friction damper 8 is similarly attached to the pair of upper and lower flanges. In particular, the front surface of the flange is a single surface, while the back surface of the flange on the web side is divided by the web. Therefore, when attaching the friction damper 8 to the flange, the friction damper 8 is arranged in such a manner as to sandwich the web.
[0027]
By the way, since the dedicated sliding plate S and the friction plate 22 are provided as described above, plate materials obtained by applying various materials and various surface finishes to the sliding plate S and the friction plate 22 can be applied. . That is, it is possible to select a highly durable material for both the sliding plate S and the friction plate 22. Therefore, the performance of the friction damper 8 can be kept constant throughout the building service period, and the friction damper 8 itself can be easily made maintenance-free.
[0028]
The disc spring laminated body 30 is interposed in a path for applying the axial force N of the high-strength bolt 16 between the second press-contact plates 15a and 15b, and is resilient against the axial displacement of the high-strength bolt 16. Exhibits a non-linear spring characteristic that is substantially constant and does not fluctuate.
[0029]
In the building damping structure described above, bending deformation occurs in the core 34 of the building 10 due to an external force such as an earthquake or wind, and when the displacement force exceeds a predetermined value, the upper column portion on the horizontal frame 38 side. 40 a and the lower column part 40 b provided on the foundation 12 side move relative to each other and are input to the friction damper 8. Then, the second pressure contact plate 15 and the first pressure contact plate 14 constituting the friction damper 8 move relative to each other with the sliding of the sliding plate S and the friction plate 22. At this time, the axial force N of the high-strength bolt 16 acting between the sliding plate S and the friction plate 22 converts the vibration energy into a frictional resistance force R of μ × N and is attenuated by vibration to control the building 10. Can shake.
[0030]
Further, since the friction damper 8 is used as a damping member, the oil does not leak like a hydraulic damper, so that the surroundings are not soiled, and since the hydraulic pressure does not decrease, the damper effect is not reduced, so that a stable damping function is achieved. Is demonstrated. Furthermore, since the friction damper 8 converts vibration displacement force into friction resistance force and reduces vibration energy, it is not necessary to replace the friction damper 8 every time the core 34 is deformed like a steel damper, and is semi-permanent. Can be used for
[0031]
In particular, a friction plate 22 and a pair of sliding plates S made of stainless steel or the like are sandwiched between the first pressure contact plate 14 and a pair of second pressure contact plates 15 sandwiching the first pressure contact plate 14 to form a seven-layer structure. And a sliding plate S are caused to slip. Since the sliding plate S and the friction plate 22 are separately attached to the first pressure contact plate 14 or the second pressure contact plate 15, they are not bound by the material of the first pressure contact plate 14 or the second pressure contact plate 15. Therefore, the optimum combination of the sliding plate S and the friction plate 22 can be appropriately selected so that the stable friction coefficient and restoring force characteristic intended by the design can be obtained.
[0032]
Further, even when the sliding surface 8a is heavily worn and the friction damper 8 needs to be replaced, it can be dealt with by replacing only the sliding plate S or the friction plate 22 because of the seven-layer structure. Furthermore, since both the sliding plate S and the friction plate 22 can be formed of a thin plate, the weight can be reduced, and this is excellent in terms of workability and economy at the time of replacement. In particular, in the building 10, the smaller the member to be replaced, the smaller the scaffold can be made, and the work can be easily performed without using a heavy machine such as a crane, and the work time can be shortened.
[0033]
In the present embodiment, the lower structure is the foundation 12, but the present invention is not limited to this, and a rigid building frame or the like may be used.
[0034]
Further, in the present embodiment, an embodiment in which one friction damper 8 is interposed between the horizontal frame 38 and the foundation 12 is shown, but the number of friction dampers 8 is not limited to this.
[0035]
Further, in the present embodiment, a pair of second press contact plates 15a and 15b is fixed to the lower column portion 40b, and a long hole 14a is provided in the first press contact plate 14 of the upper column portion 40a sandwiched between them. Although the embodiment has been shown, the second pressure contact plate 15 may be sandwiched between the first pressure contact plates 14 and a long hole may be provided in the second pressure contact plate 15. The column 40 is an H-shaped steel column in the present embodiment, but may be an inter-column, a wall, a brace, or the like.
[0036]
FIG. 6 shows a modification of the above embodiment. In the above embodiment, the width in the short direction of the long hole 14a provided in the first pressure contact plate 14 is made sufficiently larger than the outer diameter of the high-strength bolt 16 that passes therethrough. The two-dimensional relative movement between the first pressure contact plate 14 and the second pressure contact plate 15 is enabled.
[0037]
In other words, with the bending deformation of the building 10 caused by an external force such as an earthquake, the horizontal direction naturally deforms between the upper end of the upper column part 40a and the lower end of the lower column part 40b. At this time, according to the modified example, the first pressure contact plate 14 and the second pressure contact plate 15 can be relatively moved in the horizontal direction in a state where the bolt axial force is applied. Therefore, according to the vibration damping structure of this modification, the vibration displacement force in the horizontal direction can also be converted into the frictional resistance force, and vibration energy can be reduced and suppressed. Here, the through-hole formed larger than the outer diameter of the bolt is not limited to the long hole but may be a round hole or a square hole.
[0038]
FIG. 7 shows another embodiment of the present invention, in which the same components as those in the above embodiment are denoted by the same reference numerals and redundant description is omitted.
[0039]
In the present embodiment, apart from the horizontal frame 38 that projects from the core 34 and forms the top floor of the building 10, a specific floor located at an intermediate portion between the horizontal frame 38 and the foundation 12 at substantially the same distance from both. Is formed by an intermediate horizontal frame 44 having a rigid structure. The friction dampers 8 are respectively provided on the pillars 40 forming an arbitrary floor between the horizontal frame 38 and the intermediate horizontal frame 44 positioned above and below and an arbitrary floor between the intermediate horizontal frame 44 and the foundation 12. Is installed.
[0040]
According to the present embodiment, the friction damper 8 is provided between the horizontal frame 38 and the intermediate horizontal frame 44 positioned above and below, and between the intermediate horizontal frame 44 and the foundation 12, so that the friction damper is within that range. 8 works. That is, even when the entire core 34 of the building 10 is greatly bent and deformed, and the horizontal frame 38 and the foundation 12 are largely displaced, the total displacement amount is distributed and input to each friction damper 8. . For this reason, it is possible to control even a large vibration without increasing the friction damper 8 itself.
[0041]
In the present embodiment, the intermediate horizontal frame 44 is provided in the intermediate portion of the core 34 at substantially the same distance from both. However, the position and quantity of the intermediate horizontal frame 44 are arranged in the height direction of the core 34. The present invention is not limited to this as long as it is provided at an appropriate interval. Further, the number of friction dampers 8 provided between the horizontal frame 38 and the intermediate horizontal frame 44, between the intermediate horizontal frame 44 and the foundation 12, and between each intermediate horizontal frame 44 is not limited to one.
[0042]
As described above, in the building damping structure according to claim 1 of the present invention, at least one friction damper is interposed between the horizontal frame and the lower structure of the building. When a bending deformation occurs in the building due to an external force such as an earthquake , the input vibration displacement force can be converted into a frictional resistance force by a friction damper to reduce the vibration energy , thereby damping the building.
Further, one pressure contact plate (first pressure contact plate or second pressure contact plate) is paired and the other pressure contact plate (second pressure contact plate or first pressure contact plate) is sandwiched from both sides to be polymerized, and one pressure contact plate The friction plate and the sliding plate that are paired are interposed between the pressure plate and the other pressure contact plate , respectively, and each friction plate and the sliding plate are cooperated by a bolt, a nut, and a disc spring laminated body. Thus, since it is sandwiched between one pressure contact plate and the other pressure contact plate , the optimum combination can be appropriately selected without being bound by the material of one pressure contact plate and the other pressure contact plate .
Further, each friction plate and sliding plate are interposed between one press contact plate and the other press contact plate, and the one press contact plate and the other press contact plate are cooperated by the bolt, the nut, and the disc spring laminate. Since it is only necessary to generate an axial force between them, it is not necessary to fix each friction plate and sliding plate to one pressure contact plate and the other pressure contact plate by means such as bonding or screwing. , Easy to remove.
Furthermore, since the friction plate and the sliding plate can be easily replaced , the initial pressure can be obtained by replacing only the friction plate and the sliding plate, which are the damping elements, using one pressure contact plate and the other pressure contact plate as they are. The damping performance can be easily restored , and the initial damping performance can be maintained in the long term.
Furthermore, since the structure of the friction plate and the sliding plate can be simplified, the labor required for attaching and removing the friction plate and the sliding plate can be greatly reduced.
Furthermore, since a friction damper is used as a vibration damping device , oil leakage may occur due to deterioration of the seal member, etc., as in the case of using a hydraulic damper, and the damper effect may be reduced or the surroundings may be soiled. Rather, a stable vibration control function can be obtained over a long period of time.
Further, in the vibration damping structure for a building according to claim 2 of the present invention, the short diameter of each of the long holes is allowed to allow two-dimensional relative movement of one pressure contact plate and the other pressure contact plate. Therefore, one pressure contact plate and the other pressure contact plate can be two-dimensionally moved relative to each other with a bolt axial force applied, and vibration in the shear direction is also suppressed. Therefore, a good damping effect can be obtained.
Furthermore, in the vibration damping structure for a building shown in claim 3 of the present invention, even if the entire vertical frame of the building is greatly bent and deformed, the horizontal frame and the lower structure are greatly displaced. Since the displacement force is distributed and input to each friction damper, it is possible to control even a large vibration without increasing each damper itself.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing an embodiment of a vibration control structure for a building according to the present invention.
FIG. 2 is an exploded perspective view showing an embodiment of a friction damper applied to the present invention.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
4 is a view taken in the direction of arrow B in FIG. 3;
FIG. 5 is a plan view of a sliding plate applied to the embodiment shown in FIG. 2;
FIG. 6 is a side view showing a modification of the friction damper applied to the present embodiment.
FIG. 7 is a conceptual diagram showing another embodiment of the present invention.
[Explanation of symbols]
8 Friction damper 10 Building 12 Foundation 14 First press contact plate 14a Long hole 15, 15a, 15b Second press contact plate (splice plate)
16 High strength bolt 22 Friction plate 34 Core (vertical frame)
38 Horizontal frame 40 Column (building material)
40a Upper column (building material)
40b Lower column (building material)
44 Intermediate horizontal frame S Sliding plate

Claims (3)

Vertical Frames deformed by input of an external force, the horizontal Frames provided protruding from the vertical Frames, horizontal Frame and between the lower structure located thereunder, building members that are provided in parallel with the vertical Frame A vibration control structure of a building having
Comprising at least one friction damper is interposed midway in the height direction of the building element,
The friction damper includes a first pressure-contact plate provided on the building member which is suspended from the horizontal rack構側, and a second pressing plate provided in the building members to be erected from the lower structure side,
One pressure contact plate is paired and the other pressure contact plate is sandwiched from both sides and polymerized.
Between the one pressure contact plate and the other pressure contact plate , a pair of friction plates and sliding plates are respectively interposed in a superposed state,
The other pressure contact plate is provided with a long hole, the edge of the long hole on the front and back surfaces of the other pressure contact plate is provided with the friction plate, and the sliding plate is slidable on the surface of the friction plate. Polymerized into
Holes are provided in portions corresponding to the long holes of the one pressure contact plate and the sliding plates ,
Bolts are inserted into the holes of the one pressure plate, the holes of one sliding plate, the long holes of the other pressure plate, the holes of the other sliding plate, and the holes of the one pressure plate. A nut is tightened on a portion protruding from one pressure contact plate, and a bolt axial force is applied between the one pressure contact plate and the other pressure contact plate by a disc spring laminated body attached to the bolt,
A vibration damping structure for a building, wherein the first pressure contact plate and the second pressure contact plate are configured to move relative to each other with the sliding of the sliding plate and the friction plate . 2. The short diameter of each of the long holes is formed to a length that allows the one pressure contact plate and the other pressure contact plate to move relative to each other two-dimensionally. Vibration control structure of buildings. Said friction damper, with a plurality of interposed in the middle in the height direction of the building element, according to claim 1, characterized in that the intermediate horizontal Frames overhanging from said vertical Frames between these friction dampers are connected Or the vibration control structure of the building of 2.

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