JP6470027B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration damping device that suppresses vibrations such as earthquakes applied to buildings and the like.

  Conventionally, it is arranged between the upper beam (upper structure) and the lower beam (lower structure), is fixed to the lower beam, and accommodates a viscous material, and extends from the upper beam toward the lower beam. There has been proposed a vibration damping device including a resistance plate inserted so as to be immersed in a viscous body with a gap with respect to the container.

  In the vibration damping device, when a vibration such as an earthquake occurs, viscous shear is generated in the viscous body accommodated in the container due to the relative displacement between the container and the resistance plate based on the relative displacement of the upper beam with respect to the lower beam. Thus, vibrations such as earthquakes are damped by the damping force due to the viscous shear.

  However, in the conventional vibration damping device, the resistance force for attenuating the vibration due to an earthquake or the like is only the viscous shear of the viscous body. For this reason, a large viscous resistance force cannot be generated, and vibrations cannot be sufficiently attenuated.

  Accordingly, an object of the present invention is to provide a vibration damping device that can generate a large viscous resistance force and can sufficiently attenuate vibrations.

  A vibration damping device according to one aspect of the present invention is a vibration damping device installed between an upper structural member and a lower structural member located below the upper structural member, A first container wall and a second container wall that are fixed and have an opening in the upper part and are opposed to each other with a gap between them; a container that contains a viscous material; and is fixed to the upper structural member, A resistance plate inserted into the container from the opening, and the first container wall is formed with a first recess recessed outwardly and extending in a predetermined direction. A first main surface adjacent to and opposite to the container wall, a first convex portion provided on the first main surface side and projecting into the first concave portion, and opposite to the first main surface And a second main surface facing the second container wall.

  The first concave portion of the first container wall is formed to extend along a horizontal direction, and the first convex portion of the resistance plate moves in a vertical direction with respect to the first main surface. May be provided.

  The first convex portion of the resistance plate is provided so as not to move with respect to the first main surface, and a locus is curved according to a relative displacement of the upper structural member with respect to the lower structural member. The first concave portion of the first container wall may be formed in a curved shape according to the displacement of the first convex portion of the resistance plate.

  The first recess of the first container wall may be formed so as to extend along a vertical direction. The first concave portion of the first container wall may have a concave portion that is recessed outward above and below the central portion in the predetermined direction.

  The first recess of the first container wall may be formed so as to extend along a direction that is inclined with respect to a horizontal direction and a vertical direction and is parallel to the first main surface.

  A gap may be formed between the first convex portion of the resistance plate and the first concave portion of the first container wall.

  The second container wall is formed with a second recess recessed outward and extending in the predetermined direction, and the second main surface is in close proximity to and opposed to the second container wall, You may have the 2nd convex part which protrudes in a recessed part.

  A plurality of the first recesses are formed in the first container wall, a plurality of the second recesses are formed in the second container wall, and the first protrusions are a plurality of the first containers. A plurality of the resistance plates may be provided corresponding to the recesses, and a plurality of the second protrusions may be provided on the resistance plate corresponding to the plurality of the second recesses.

  According to the present invention, it is possible to provide a vibration damping device that can generate a large resistance force and can sufficiently attenuate vibrations.

It is a figure which shows the state which installed the damping device which concerns on this embodiment in the upper structure and the lower structure. The perspective view of the damping device concerning this embodiment is shown. The disassembled perspective view of the damping device of FIG. 1 is shown. (A) is sectional drawing which cut | disconnected the 1st container wall 12, the 2nd container wall 13, and the resistance board 20 with the plane orthogonal to the horizontal direction X, FIG.4 (b) is FIG.4 (a). Is a cross-sectional view taken along line VB-VB. The perspective view of the damping device concerning a modification is shown.

  A vibration damping device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which the vibration damping device 1 of the present embodiment is installed on the upper structural member 4 and the lower structural member 5, and FIG. 2 is a perspective view of the vibration damping device 1 in the first embodiment. FIG. 3 is an exploded perspective view of the vibration damping device 1.

  As shown in FIG. 1, a vibration damping device 1 is installed between an upper structural member 4 such as an upper beam and a lower structural member 5 such as a lower beam that are bridged by a pair of vertical columns 3. It is. The pair of vertical pillars 3, the upper structural member 4, and the lower structural member 5 are made of H-shaped steel, I-shaped steel, or the like.

  As illustrated in FIG. 1C, the vibration damping device 1 includes a container 10 and a resistance plate 20.

  As shown in FIGS. 2 and 3, the container 10 is made of steel or the like, and has a flat plate-like base portion 11 fixed to the lower structural member 5 with bolts or the like, and a vertical standing on the base portion 11 with a gap therebetween. A pair of opposing first container wall 12 and second container wall 13, and a pair of side walls 14 erected on the base 11 are provided. The container 10 has an opening 10a (see FIG. 4A) at the top, and is filled with the viscous body 2. The viscous body 2 is composed of a high-viscosity polymer material, and its viscous resistance has speed dependency.

  The first container wall 12 has a flat plate shape and includes a plurality of (eight in the present embodiment) first semi-cylindrical portions 15 (in FIGS. 2 and 3, one first half-cylindrical portion 15). Only the cylindrical part 15 is provided with a reference number.) Each first semi-cylindrical portion 15 has a first concave portion 15a (see also FIG. 4) that extends along the horizontal direction X and has a semicircular cross section perpendicular to the horizontal direction X and recessed outward. The horizontal direction X corresponds to a predetermined direction.

  The second container wall 13 has a shape symmetrical to the first container wall 12 with respect to the resistance plate 20. That is, the second container wall 13 has a flat plate shape and has a plurality (eight in the present embodiment) of second semi-cylindrical portions 16 (in FIG. 3, one second semi-cylindrical portion). Only the part 16 is provided with a reference number.) Each second semi-cylindrical portion 16 extends along the horizontal direction X, and a second recess 16a (see also FIG. 4A) whose cross section perpendicular to the horizontal direction X forms a semicircular shape and is recessed outward. Have

  The resistance plate 20 is fixed to the upper structural member 4, extends from the upper structural member 4 toward the lower structural member 5, and is inserted into the container 10 through the opening 10 a so as to be immersed in the viscous body 2. The resistance plate 20 has a first main surface 21 that is close to and faces the first container wall 12 so as to close the first recess 15a of each first semi-cylindrical portion 15 of the first container wall 12. The first main surface 21 is located on the opposite side of the second container wall 13 and close to the second container wall 13 so as to close the second recess 16a of each second semi-cylindrical part 16 of the second container wall 13. 2 main surfaces 22.

  On the first main surface 21 side of the resistance plate 20, a plurality of first convex portions 23 are provided corresponding to the plurality of first semicylindrical portions 15. The first semi-cylindrical portion 15 is provided so as to protrude into the first concave portion 15a (in FIG. 2, only one first convex portion 23 is provided with a reference number). On the second main surface 22 side of the resistance plate 20, a plurality of second convex portions 24 are provided corresponding to the plurality of second semi-cylindrical portions 16 (see FIG. 4A). Each second convex portion 24 is provided so as to protrude into the second concave portion 16 a of each second semi-cylindrical portion 16.

  With such a configuration, a simple cylinder-piston mechanism is realized by the first concave portion 15a of each first semi-cylindrical portion 15 of the first container wall 12 and the corresponding first convex portion 23 of the resistance plate 20. Similarly, a simple cylinder-piston mechanism is constituted by the second concave portion 16a of each second semi-cylindrical portion 16 of the second container wall 13 and the corresponding second convex portion 24 of the resistance plate 20. Is done.

  The first convex portion 23 and the second convex portion 24 are provided so as to be displaceable in the vertical direction Y with respect to the resistance plate 20. With reference to FIG. 4, a configuration in which the first convex portion 23 and the second convex portion 24 can be displaced with respect to the resistance plate 20 will be described.

  4A is a plane in which the first container wall 12, the second container wall 13, and the resistance plate 20 are orthogonal to the horizontal direction X at the positions of the first convex portion 23 and the second convex portion 24. FIG. FIG. 4B is a cross-sectional view taken along the line VB-VB in FIG.

  As shown in FIG. 4A, the resistance plate 20 has a through hole 20a. An annular member 25 having an insertion hole 25a is disposed in the through hole 20a. The length of the annular member 25 in the depth direction Z (the direction orthogonal to the horizontal direction X and the vertical direction Y) is configured to be longer than the thickness of the resistance plate 20, and both end portions thereof are the first main surface 21 and the second main surface 21, respectively. Projecting from the main surface 22. A portion protruding from the first main surface 21 of the annular member 25 corresponds to the first convex portion 23, and a portion protruding from the second main surface 22 of the annular member 25 corresponds to the second convex portion 24. To do.

  Further, the width in the vertical direction Y of the through hole 20 a is configured to be longer than the width in the vertical direction Y of the annular member 25. A support member 26 fixed to the first main surface 21 and a support member 27 fixed to the second main surface 22 are inserted into the insertion hole 25 a of the annular member 25. The width in the vertical direction Y of the portion inserted into the insertion hole 25a of the support members 26 and 27 is configured to be shorter than the width in the vertical direction Y of the insertion hole 25a of the annular member 25. Therefore, the annular member 25 can be displaced in the vertical direction Y with respect to the support members 26 and 27.

  Thus, the width of the through hole 20a in the vertical direction Y is configured to be longer than the width of the annular member 25 in the vertical direction Y, and the annular member 25 is supported by the support members 26 and 27 so as to be displaceable in the vertical direction Y. ing. Therefore, the annular member 25 (the first convex portion 23 and the second convex portion 24) is provided so as to be displaceable in the vertical direction Y with respect to the resistance plate 20.

  As shown in FIGS. 4A and 4B, a gap G is formed between the first concave portion 15a of the first container wall 12 and the first convex portion 23 of the resistance plate 20. Yes. As shown in FIG. 4B, the substantially sealed space 6 defined by the first concave portion 15 a and the first main surface 21 of the first semicylindrical portion 15 is the first convex portion of the resistance plate 20. 23 is divided into two spaces 6a and 6b. Similarly, a gap G is formed between the second concave portion 16 a of the second container wall 13 and the second convex portion 24 of the resistance plate 20. As shown in FIG. 4B, the substantially sealed space 4 defined by the second concave portion 16 a and the second main surface 22 of the second semi-cylindrical portion 16 is the second convex portion of the resistance plate 20. 27 is divided into two spaces 7a and 7b.

  Next, the vibration damping operation by the vibration damping device 1 will be described with reference to FIGS.

  For example, when an earthquake occurs, the upper structural member 4 is displaced relative to the lower structural member 5 in the horizontal direction X. Accordingly, the resistance plate 20 is displaced relative to the container 10 in the horizontal direction X.

  Thereby, each 1st convex part 23 of resistance board 20 moves in the 1st crevice 15a corresponding to the 1st container wall 12. The viscous body 2 moves in the two spaces 6a and 6b through the gap G by the movement of the first convex portions 23 of the resistance plate 20. When the viscous body 2 passes through the gap G, a large viscous resistance force is generated and the vibration is attenuated. Similarly, each second convex portion 24 of the resistance plate 20 moves in the corresponding second concave portion 16 a of the second container wall 13. The viscous body 2 moves through the two spaces 7a and 7b through the gap G by the movement of the second convex portions 24 of the resistance plate 20. When the viscous body 2 passes through the gap G, a large viscous resistance force is generated and the vibration is attenuated.

  In addition, since the upper structural member 4 and the lower structural member 5 are bridged by the pair of support columns 3, if the upper structural member 4 is displaced relative to the lower structural member 5 in the horizontal direction X, the upper structural member 4 The member 4 is slightly displaced also in the vertical direction Y. Thereby, the resistance plate 20 fixed to the upper structural member 4 is also slightly displaced in the vertical direction Y. Since each 1st convex part 23 and each 2nd convex part 24 are provided with respect to the resistance board 20 so that a displacement in the vertical direction Y is possible, even if the resistance board 20 is displaced in the vertical direction Y, it is horizontal. The first concave portions 15a and the second concave portions 16a extending along the direction X move smoothly.

  Further, the viscous body 2 having speed dependency generates a viscous resistance force corresponding to the displacement speed of the first convex portion 23 and the second convex portion 24 of the resistance plate 20. That is, when the first convex portion 23 and the second convex portion 24 of the resistance plate 20 try to displace relative to the first container wall 12 and the second container wall 13 at a high speed, the viscous body 2 is Generates a large viscous resistance force. Thus, when the 1st convex part 23 and the 2nd convex part 24 of the resistance board 20 displace relatively rapidly with respect to the 1st container wall 12 and the 2nd container wall 13, big viscosity Vibration can be attenuated by the resistance force.

  On the other hand, when the first convex portion 23 and the second convex portion 24 of the resistance plate 20 are displaced at a low speed with respect to the first container wall 12 and the second container wall 13, the viscous body 2 has a large viscous resistance. Does not generate power.

  As described above, in the vibration damping device 1 of the present embodiment, the first container wall 12 is formed with the first concave portion 15 a that is recessed outward and extends in the horizontal direction, and the first main surface of the resistance plate 20. 21 is provided with a first convex portion 23 that faces the first container wall 12 so as to close the first concave portion 15a and projects from the first main surface 21 into the first concave portion 15a.

  With such a configuration, a simple cylinder-piston mechanism is configured by the first concave portion 15 a of the first semi-cylindrical portion 15 of the first container wall 12 and the first convex portion 23 of the resistance plate 20. .

  Then, when the upper structural member 4 is displaced relative to the lower structural member 5 in the horizontal direction X when the earthquake occurs, the resistance plate 20 is displaced relative to the container 10 in the horizontal direction X. . As a result, the first convex portion 23 of the resistance plate 20 moves in the first concave portion 15a of the first container wall 12, and the viscous body 2 flows in the first concave portion 15a. Resistance is generated. In this way, a simple cylinder-piston mechanism is configured, and by operating the cylinder-piston mechanism, a large viscous resistance force can be generated and vibrations can be attenuated.

  Further, a gap G is formed between the first concave portion 15 a of the first container wall 12 and the first convex portion 23 of the resistance plate 20. Therefore, the viscous body 2 moves in the two spaces 3a and 3b through the gap G by the movement of the first convex portion 23 of the resistance plate 20, and a large viscous resistance force is generated by the movement of the viscous body 2. Vibration can be attenuated.

  The first concave portion 15 a of the first container wall 12 is formed to extend along the horizontal direction, and the first convex portion 23 of the resistance plate 20 is displaced in the vertical direction Y with respect to the resistance plate 20. It is provided as possible. Therefore, the upper structural member 4 bridged by the pair of support columns 3 is displaced in the vertical direction Y due to relative displacement with respect to the lower structural member 5, and the resistance plate 20 fixed to the upper structural member 4 is in the vertical direction. Even if it is displaced to Y, the first convex portion 23 is provided so as to be displaceable in the vertical direction Y with respect to the resistance plate 20, so that the inside of the first concave portion 15 a extending along the horizontal direction X can be smoothly smoothed. Can move.

  Further, the second container wall 13 is formed with a second recess 16a that is recessed outward and extends in the horizontal direction, and the second main surface 22 of the resistance plate 20 is closed so as to close the second recess 16a. A second convex portion 24 is provided opposite to the second container wall 13 and projecting from the second main surface 22 into the second concave portion 16a.

  With such a configuration, a simple cylinder-piston mechanism is configured by the second concave portion 16 a of the second semi-cylindrical portion 16 of the second container wall 13 and the second convex portion 24 of the resistance plate 20. . Therefore, by operating the cylinder-piston mechanism in the same manner as described above, it is possible to generate a large viscous resistance force on the viscous body 2 on both surfaces of the resistance plate 20 and to attenuate the vibration.

  A plurality of first recesses 15a of the first container wall 12 and a plurality of second recesses 16a of the second container wall 13 are formed, and the first and second protrusions 23 and 2 of the resistance plate 20 are formed. A plurality of 24 are provided corresponding to the plurality of first recesses 15a and the plurality of second recesses 16a. Therefore, when each 1st convex part 23 and the 2nd convex part 24 move relatively with respect to each 1st recessed part 15a and each 2nd recessed part 16a, much larger viscosity is set to the viscous body 2. FIG. Resistance force can be generated.

  In addition, this invention is not limited to the Example mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

  For example, in the above embodiment, each first protrusion 23 and each second protrusion 24 are provided so as to be displaceable in the vertical direction Y with respect to the resistance plate 20. However, as shown in FIG. 5, the first convex portion 123 and the second concave portion (not shown in FIG. 5) may be fixed so as not to move with respect to the resistance plate 20. In the said structure, the 1st convex part 123 and the 2nd convex part are displaced so that the locus | trajectory may become curved shape by the relative displacement with respect to the lower structural member 5 of the upper side structural member 4. FIG. Accordingly, the first concave portion 115a of the first semi-cylindrical portion 115 of the first container wall 12 may be formed in a curved shape according to the curved displacement locus of the first concave portion 123. . Although not shown, the second concave portion of the second semi-cylindrical portion of the second container wall 13 may also be formed in a curved shape in accordance with the curved displacement locus of the second convex portion. .

  Also in this configuration, a simple cylinder-piston mechanism is configured by the first concave portion 115a of the first semi-cylindrical portion 115 of the first container wall 12 and the first convex portion 123 of the resistance plate 20, and the first A simple cylinder-piston mechanism is constituted by the second concave portion of the second semi-cylindrical portion of the two container walls 13 and the second convex portion of the resistance plate 20.

  Then, when the upper structural member 4 is displaced relative to the lower structural member 5 in the horizontal direction X when the earthquake occurs, the resistance plate 20 is displaced relative to the container 10 in the horizontal direction X. . As a result, the first convex portion 23 of the resistance plate 20 moves in the first concave portion 15a of the first container wall 12, and the viscous body 2 flows in the first concave portion 15a. Resistance is generated. Thus, a simple cylinder-piston mechanism is configured, and by operating the cylinder-piston mechanism, a large viscous resistance force can be generated in the viscous body 2 and vibration can be attenuated.

  In the above embodiment, the first concave portion 15 a of each first semicylindrical portion 15 of the first container wall 12 and the second concave portion of each second semicylindrical portion 16 of the second container wall 13 are used. 16a is formed so as to extend along the horizontal direction X, but may be formed so as to extend along the vertical direction Y. Moreover, the shape of the 1st convex part 23 and the 2nd convex part 24 of the resistance board 20 becomes a shape corresponding to the 1st recessed part 15a extended in the vertical direction Y, and the 2nd recessed part 16a. In this case, the vertical direction Y corresponds to a predetermined direction.

  According to the vibration damping device of the configuration, when the building vibrates in the vertical direction Y by traveling of a large vehicle or the like, the resistance is increased when the upper structural member 4 and the lower structural member 5 are relatively displaced in the vertical direction Y. The first concave portion 23 and the second concave portion 24 of the plate 20 move in the first concave portion and the second concave portion extending in the vertical direction Y. As a result, the viscous body 2 flows in the first concave portion and the second concave portion, and a viscous resistance force is generated. Therefore, the vibration in the vertical direction Y can be attenuated, and vibration is generated in the person in the building. It is possible to suppress transmission.

  The first recess 15a of each first semi-cylindrical portion 15 of the first container wall 12 and the second recess of each second semi-cylindrical portion 16 of the second container wall 13 of the above-described embodiment. 16a may have a recessed part dented outwardly in the upper and lower sides of the center part of those horizontal directions. According to such a configuration, it is possible to attenuate the vibration in the horizontal direction X and the vibration in the vertical direction Y.

  In the above embodiment, the vibration damping device 1 is installed between the upper structural member 4 such as the upper beam and the lower structural member 5 such as the lower beam that are bridged by the pair of vertical columns 3 in the building. Although demonstrated, you may use the damping device 1 as a cable damper for attenuating the vibration of a cable-stayed bridge cable. In this case, the container 10 is attached to the cable girder of the cable-stayed bridge, and the resistance plate 20 is attached to the cable-stayed bridge cable. Since the cable-stayed bridge cable is stretched between the tower and the bridge girder, the first semi-cylindrical portion 15 (first recess 15a) of the first container wall 12 and the first The second semi-cylindrical portion 16 (second concave portion 16a) of the two container walls 13 extends in an oblique direction (a direction that intersects the horizontal direction X and the vertical direction Y and is parallel to the first main surface 21). It is formed. Moreover, the shape of the 1st convex part 23 and the 2nd convex part 24 of the resistance board 20 becomes a shape corresponding to the 1st recessed part 15a and the 2nd recessed part 16a which extend in the diagonal direction. In this case, an oblique direction (a direction intersecting the horizontal direction X and the vertical direction Y and parallel to the first main surface 21) corresponds to a predetermined direction.

  According to the vibration damping device having the above configuration, when the cable stayed bridge vibration occurs, the resistance plate 20 is displaced relative to the container 10 in an oblique direction. As a result, the first convex portion 23 and the second convex portion 24 of the resistance plate 20 pass through the first concave portion 15a of the first container wall 12 and the second concave portion 16a of the second container wall 13. When the viscous body 2 moves and flows in the first concave portion 15a and the second concave portion 16a, a large viscous resistance force is generated. Thus, a large viscous resistance force can be generated, and cable-stayed bridge cable vibration can be attenuated. Since the resistance plate 20 is displaced in a direction other than the oblique direction with respect to the container 10, the first convex portion 23 and the second convex portion 24 of the resistance plate 20 are replaced with the first concave portion of the first container wall 12. 15a and the 2nd recessed part 16a of the 2nd container wall 13 are comprised so that it may have a clearance gap required for a displacement.

  Moreover, in said embodiment, between the 1st recessed part 15a of the 1st container wall 12, and the 1st convex part 23 of the resistance board 20, the 1st recessed part 15a of the 1st container wall 12, A gap G is formed between the resistor plate 20 and the first convex portion 23, and the viscous body 2 is passed through the gap G so that viscous resistance is generated. However, without forming the gap G, through holes or slits are formed in the first convex portion 23 and the second convex portion 24, and the viscous body 2 passes through the through holes or slits, thereby generating viscous resistance. You may make it the structure to carry out.

  Further, the first concave portion 15a of the first container wall 12 and the second concave portion 16a of the second container wall 13 have a semicircular cross section, and the first convex portion 23 and the second convex portion of the resistance plate 20 are formed. The convex portion 24 had a shape corresponding to the semicircular shape. However, the cross section of the first recess 15a of the first container wall 12 and the second recess 16a of the second container wall 13 may be triangular or quadrangular (rectangular, trapezoidal, etc.), and the resistance plate 20 The first convex portion 23 and the second convex portion 24 may have a shape corresponding to the triangular shape or the quadrangular shape (rectangle, trapezoid, etc.). That is, the first concave portion 15a of the first container wall 12 and the second concave portion 16a of the second container wall 13 and the first convex portion 23 and the second convex portion 24 of the resistance plate 20 are mutually connected. It only needs to have a corresponding shape.

  In the above embodiment, a plurality of the first concave portions 15, the second concave portions 16, the first convex portions 23, and the second convex portions 24 are provided, but how many of them are provided. For example, one may be sufficient. Moreover, the 1st convex part 23 and the 2nd convex part 24 which can be displaced to the perpendicular direction Y in the resistance board 20 of 1st Embodiment are made into 1st convex with respect to the resistance board 20 of 2nd Embodiment. It may replace with the part 123 and a 2nd convex part, and may be provided. Further, if the upper structural member 4 moves in the horizontal direction, the first protrusion 123 and the second protrusion in the resistance plate 20 of the second embodiment are replaced with the resistance plate 20 of the first embodiment. On the other hand, the first convex portion 23 and the second convex portion 24 may be provided instead.

1: damping device, 2: viscous body, 4: upper structural member, 5: lower structural member, 10: container, 10a: opening, 12: first container wall, 13: second container wall, 15a: first 1 concave portion, 16a: second concave portion, 20: resistance plate, 21: first main surface, 22: second main surface, 23: first convex portion, 24: second convex portion, G: Gap

Claims (7)

A vibration damping device installed between the upper structural member and the lower structural member located below the upper structural member,
A container that is fixed to the lower structural member, has an opening in the upper part, and includes a pair of first container wall and second container wall that face each other via a gap, and contains a viscous body;
A resistor plate fixed to the upper structural member and inserted into the container from the opening;
The first container wall is formed with a first recess recessed outward and extending in a predetermined direction,
The resistance plate includes a first main surface that is proximately opposed to the first container wall, a first convex portion that is provided on the first main surface side and protrudes into the first concave portion, and the first located on the opposite side have a second major surface facing the second container wall with respect to the first main surface,
The first recess of the first container wall is formed to extend along a horizontal direction;
The damping device provided with the 1st convex part of the resistance board so that movement in the perpendicular direction is possible to the 1st principal surface . A vibration damping device installed between the upper structural member and the lower structural member located below the upper structural member,
  A container that is fixed to the lower structural member, has an opening in the upper part, and includes a pair of first container wall and second container wall that face each other via a gap, and contains a viscous body;
  A resistor plate fixed to the upper structural member and inserted into the container from the opening;
  The first container wall is formed with a first recess recessed outward and extending in a predetermined direction,
  The resistance plate includes a first main surface that is proximately opposed to the first container wall, a first convex portion that is provided on the first main surface side and protrudes into the first concave portion, and the first A second main surface located opposite to the main surface of the first surface and facing the second container wall;
  The first convex portion of the resistance plate is provided so as not to move with respect to the first main surface, and a locus is curved according to a relative displacement of the upper structural member with respect to the lower structural member. Is displaced as
  The vibration damping device in which the first concave portion of the first container wall is formed in a curved shape according to the displacement of the first convex portion of the resistance plate. A vibration damping device installed between the upper structural member and the lower structural member located below the upper structural member,
  A container that is fixed to the lower structural member, has an opening in the upper part, and includes a pair of first container wall and second container wall that face each other via a gap, and contains a viscous body;
  A resistor plate fixed to the upper structural member and inserted into the container from the opening;
  The first container wall is formed with a first recess recessed outward and extending in a predetermined direction,
  The resistance plate includes a first main surface that is proximately opposed to the first container wall, a first convex portion that is provided on the first main surface side and protrudes into the first concave portion, and the first A second main surface located opposite to the main surface of the first surface and facing the second container wall;
  The vibration damping device, wherein the first recess of the first container wall is formed so as to incline with respect to a horizontal direction and a vertical direction and extend along a direction parallel to the first main surface. 3. The vibration damping device according to claim 1 , wherein the first concave portion of the first container wall has a concave portion that is recessed outward above and below a central portion in the predetermined direction. The clearance according to any one of claims 1 to 4 , wherein a gap is formed between the first convex portion of the resistance plate and the first concave portion of the first container wall. Shaker. The second container wall is formed with a second recess recessed outward and extending in the predetermined direction,
The second main surface is in close proximity to the second container wall,
The said resistance board is a damping device as described in any one of Claims 1-3 which has a 2nd convex part which is provided in the said 2nd main surface side and protrudes in the said 2nd recessed part. A plurality of the first recesses are formed in the first container wall;
A plurality of the second recesses are formed in the second container wall;
A plurality of the first protrusions are provided on the resistance plate corresponding to the plurality of first recesses,
The vibration control device according to claim 6 , wherein a plurality of the second protrusions are provided on the resistance plate corresponding to the plurality of second recesses.

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