JP2018131753A - Vibration damping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration damping device capable of simplifying the structure of a connecting part connecting a plurality of plate materials while suppressing the occurrence of bending moment, and improving assemblability.SOLUTION: A vibration damping device includes: a plurality of first plate members 10A to 10C connected in parallel with a first connecting part 12 and attached to one of lower structural members 3; a plurality of second plate materials 11A, 11B connected in parallel by a second connecting part 13 and attached to the other of an upper structural member 2 and the lower structural member 2 and arranged alternately with the plurality of first plate materials 10A to 10C; and a resistance generating member 14, which is positioned between a first plate material 10A to 10C and a second plate material 11A, 11B adjacent to each other and generates resistance force to the plurality of first plate materials 10A to 10C and the plurality of second plate materials 11A, 11B by the relative horizontal movement thereof. The first connecting part 12 is provided at each of both end parts 17 of the plurality of first plate members 10A to 10C in the horizontal direction, and connects the plurality of first plate members 10A to 10C at both end parts 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration damping device that suppresses vibration such as an earthquake applied to a building or the like.

  Conventionally, a plurality of first plate members that are disposed between an upper beam (upper structure) and a lower beam (lower structure) and are attached to the lower beam, and a plurality of second plates that are attached to the upper beam. Has been proposed (see, for example, Patent Document 1) including a plate member and a friction member provided between a first plate member and a second plate member adjacent to each other.

  In the vibration damping device, the lower beam and the upper beam relatively move in the horizontal direction during vibration such as an earthquake, and the plurality of first plate members and the plurality of second plate members move in the horizontal direction. As a result, the frictional force by the frictional member is applied to the plurality of first plate members and the plurality of second plate members, and the vibrations such as earthquakes are attenuated by the frictional force.

Japanese Patent No. 5,406,042

  However, in the vibration damping device of Patent Document 1, the plurality of first plate members are connected to each other by the connecting portions along the horizontal direction at the lower end portions thereof, and the plurality of second plate members are horizontally arranged at the upper end portions thereof. It is mutually connected by the connection part along the direction. With this configuration, since a bending moment due to the frictional force of the friction member applied to all of the plurality of first plate members or the plurality of second plate members is generated in the connection portion, the number of connection points by the connection portion is increased, and the plate thickness of the plate material is increased. It was necessary to increase the size, and the assembly of the vibration control device was not good.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration damping device that improves the assemblability by simplifying the structure of a connecting portion that connects a plurality of plate members while suppressing the generation of a bending moment.

  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, and is arranged in parallel by one connecting portion. A plurality of plate members attached to one of the upper structural member (2) and the lower structural member, and connected in parallel by another connecting portion, and the upper structural member and the lower structural member A plurality of other plate members, which are attached to the other and arranged alternately with the plurality of one plate members, and between the one plate member and the other plate member adjacent to each other, and the plurality of one plate members And a plurality of one plate material and a resistance force generating means for generating a resistance force to the plurality of other plate materials by relative horizontal movement between the plurality of other plate materials, and the one connecting portion is The plurality of one plate material and the other plate material are installed and operated. Respectively provided on the horizontal both sides of the region of the one plate does not overlap when viewed from the front direction, connecting the plurality of first plate members at the opposite sides of the region.

  You may comprise so that the center of the resistance force concerning each one board | plate material and the center of the said one connection part connected with each one board | plate material may correspond in general.

  The plurality of plate members are attached to the lower structural member, and one of the plurality of plate members positioned at both ends in the direction in which the plurality of plate members are arranged has openings in the upper portion and accommodates a working fluid. A part of a container forming a storage space to be formed, and the resistance generating means may be the working fluid.

  The center of the resistance force applied to each one plate member (10A to 10E) and the center of the reaction force generated in the one connection part (12) by the resistance force may be configured to substantially coincide with each other.

  The resistance force generating means is a friction member, and may be provided so as to be sandwiched between the one plate material adjacent to the other plate material.

  The other connecting portions may be provided at both ends in the horizontal direction of the plurality of other plate members, and the plurality of other plate members may be connected at the both end portions.

  ADVANTAGE OF THE INVENTION According to this invention, the structure of the connection part which connects a some board | plate material can be simplified and the assembly property can be improved, suppressing generation | occurrence | production of a bending moment.

(A) shows the schematic front view of the damping device which concerns on this embodiment, (b) shows the schematic side view of the damping device which concerns on this embodiment. (A) shows the schematic front view of the conventional damping device, (b) shows the schematic side view of the conventional damping device. (A) shows the schematic front view of the damping device which concerns on this embodiment, (b) shows the schematic longitudinal cross-sectional view of the damping device which concerns on this embodiment. (A) is a schematic front view of the vibration damping device according to the present embodiment, (b) is a longitudinal sectional view of the vibration damping device according to the present embodiment, and (c) is an explanatory view of the friction member. Indicates. The schematic exploded perspective view of the damping device concerning this embodiment is shown.

  A vibration damping device 1 according to an embodiment of the present invention will be described with reference to the drawings.

  First, a schematic configuration of the vibration damping device 1 according to the present embodiment will be described with reference to FIG. Fig.1 (a) shows the schematic front view of the damping device 1 which concerns on this embodiment, FIG.1 (b) has shown the schematic side view of the damping device 1 which concerns on this embodiment.

  The vibration damping device 1 according to the present embodiment is a vibration damping device 1 installed between an upper structural member 2 (not shown) such as an upper beam and a lower structural member 3 (not shown) such as a lower beam.

  As shown in FIG. 1, the vibration damping device 1 includes a plurality (three) of first plate members 10 </ b> A to 10 </ b> C, a plurality (two) of second plate members 11 </ b> A and 11 </ b> B, and a first connecting portion 12. The 2nd connection part 13 and the resistance force generation member 14 are provided.

  Each of the first plate members 10 </ b> A to 10 </ b> C is made of a steel material or the like, has a rectangular flat plate shape, and is connected in parallel by the first connecting portion 12. The first plate member 10B located in the center among the plurality of first plate members 10A to 10C is fixed to the lower structural member 3 via the lower mounting portion 15, whereby the plurality of first plate members 10A to 10A. 10 </ b> C is attached to the lower structural member 3.

  Each of the second plate members 11 </ b> A and 11 </ b> B is made of steel or the like, has a rectangular flat plate shape, and is connected in parallel to the upper mounting portion 16 by the second connecting portion 13. By fixing the upper mounting portion 16 to the upper structural member 2, the plurality of second plate members 11 </ b> A and 11 </ b> B are attached to the upper structural member 2. The second plate member 11A is disposed between the first plate members 10A and 10B, and the second plate member 11B is disposed between the first plate members 10B and 10C. Thus, the first plate members 10A to 10C and the second plate members 11A and 11B are arranged so as to be alternately arranged.

  The 1st connection part 12 is comprised, for example with a volt | bolt and a nut, and is provided in the both ends (area | region of both sides) 17 in the horizontal direction of several 1st board | plate materials 10A-10C in one side 3 places along a perpendicular direction. The plurality of first plate members 10A to 10C are connected to each other. In the direction in which the plurality of first plate members 10A to 10C are arranged by the first connecting portion 12, the first plate members 10A and 10C located on the outside are connected to the first plate member 10B located at the center. Both end portions 17 correspond to positions where the plurality of first plate members 10A to 10C and the plurality of second plate members 11A and 11B do not overlap when the vibration damping device 1 is viewed from the front during installation and operation.

  The second connecting portion 13 is constituted by, for example, a bolt and a nut, and is provided in a plurality along the horizontal direction on the upper end portion 18 of the plurality of second plate members 11A and 11B, and the plurality of second plate members 11A and 11B are provided. It is fixed to the upper mounting portion 16.

  The resistance generating member 14 corresponding to the resistance generating means is located between the first plate members 10A to 10C and the second plate members 11A and 11B adjacent to each other. The resistance force generating member 14 is constituted by, for example, a friction member or a working fluid such as a viscous body or a viscoelastic pair as described later. The resistance force generating member 14 is interposed between the first plate members 10A to 10C and the second plate members 11A and 11B adjacent to each other, whereby the plurality of first plate members 10A to 10C and the plurality of second plate members 10A to 10C are disposed. During the relative horizontal movement with respect to the plate members 11A and 11B, the plurality of first plate members 10A to 10C and the plurality of second plate members 11A and 11B are configured to generate resistance.

  Then, the center H of the resistance B applied to each of the first plate members 10A to 10C and the centers F of the six first connecting portions 12 connected to the first plate members 10A to 10C substantially coincide with each other. It is configured. The center H is in sliding contact with the friction member and the friction member when the vibration damping device 1 is viewed from the front when the resistance force generating member 14 is a friction member. It is the centroid position of the contact surface Z (shaded part of Fig.1 (a)) with a member (1st board | plate material). The center F is a middle position when the six first connecting portions 12 connected to the first plate members 10A to 10C are provided in three places on the one side along the vertical direction in an equal arrangement. It is. That is, the reaction force D generated in the six first connecting portions 12 by the center H of the resistance B related to the first plates 10A to 10C and the resistance B applied to the first plates 10A to 10C. The center F is configured to substantially match.

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

  For example, when an earthquake occurs, the upper structural member 2 and the lower structural member 3 are relatively moved in the horizontal direction, so that the plurality of first plate members 10A to 10C and the plurality of second plate members 11A and 11B Move relatively horizontally, and the resistance generating member 14 generates the resistance B on the plurality of first plate members 10A to 10C and the plurality of second plate members 11A and 11B. The resistance force B suppresses displacement of the plurality of first plate members 10A to 10C and the plurality of second plate members 11A and 11B, and attenuates vibration.

  That is, the lower structural member 3 is displaced relative to the upper structural member 2 in the horizontal direction as indicated by the arrow A. Accordingly, the plurality of first plate members 10A to 10C attached to the lower structural member 3 are also displaced in the direction of the arrow A.

  When the plurality of first plate members 10A to 10C are displaced, the resistance force B is applied to the plurality of first plate members 10A to 10C by the resistance generating member 14, thereby suppressing the displacement and damping the vibration.

  Further, when the resistance force B is applied to the plurality of first plate members 10A to 10C, a bending moment C is generated in a portion where the plurality of first plate members 10A to 10C are attached to the lower structural member 3. And in this embodiment, since the 1st board | plate materials 10A and 10C located in the outer side are connected by the 1st connection part 12 in the both ends 17 of the horizontal direction, the bending moment C by resistive force B is given. Can be small. Moreover, in this embodiment, it connects with the 1st board | plate material 10B located in the center by the 1st connection part 12, the center of the resistive force B concerning each 1st board | plate material 10A-10C, and each 1st board | plate material 10A. Since the center of the six first connecting portions 12 connected to 10C coincides with the center of the first connecting portion 12, the generation of a bending moment due to the resistance B applied to the first plate members 10A and 10C is prevented. be able to.

  For this reason, only the resistance force B will be added to the 1st board | plate materials 10A and 10C located outside. Thereby, the connection part by the 1st connection part 12 which mutually connects several 1st board | plate materials 10A-10C can be decreased (simplification), and the board | plates of 1st board | plate material 10A, 10C located in the outer side The thickness can be reduced. Therefore, the assemblability of the vibration damping device 1 can be improved.

  On the other hand, as shown in FIG. 2, in the conventional vibration damping device 101, the first plate members 10 </ b> A and 10 </ b> C positioned outside in the direction in which the plurality of first plate members 10 </ b> A and 10 </ b> C are arranged are The first plate member 10B located at the center is connected by a plurality of first connecting portions 12 along the horizontal direction. For this reason, a large bending moment due to the resistance force B applied to all of the plurality of first plate members 10 is applied to the first connecting portion 12, and in order to withstand the bending moment, the connecting portion by the first connecting portion 12. It is necessary to increase the thickness of the first plate members 10A and 10C located outside and to increase the assemblability of the vibration damping device 101.

  Next, a vibration damping device 31 according to an embodiment in which the resistance generating member is a working fluid will be described with reference to FIG. In addition, about the same structure as said embodiment, the same reference number is attached | subjected and description is abbreviate | omitted and only a different part is demonstrated.

  Fig.3 (a) shows the schematic front view of the damping device 31 which concerns on this embodiment, FIG.3 (b) has shown the schematic longitudinal cross-sectional view of the damping device 31 which concerns on this embodiment. In addition, in FIG. 3, illustration of the upper side structural member 2 and the lower side structural member 3 is abbreviate | omitted.

  The vibration damping device 31 of this embodiment includes a plurality (five) of first plate members 10A to 10E and a plurality (four) of second plate members 11A to 11D. The plurality of first plate members 10 </ b> A to 10 </ b> E are connected in parallel by the first connecting portion 12 at both ends 17 in the horizontal direction. In addition, a pair of side plates 10F and a pair of bottom plates 10G are provided so as to close a gap formed by the first plate members 10A to 10C. Thereby, the container which has the opening 10h and accommodates the working fluid 14 is comprised.

  The plurality of second plate members 11 </ b> A to 11 </ b> D are connected to each other in parallel at the upper end portion 18 by the second connecting portion 13. The second plate members 11A to 11D are inserted into the container through the opening 10h so as to be immersed in the working fluid 14. Each 2nd board | plate material 11A-11D has a clearance gap between 1st board | plate materials 10A-10E.

  The working fluid 14 is composed of a high-viscosity polymer material, and its viscous resistance has speed dependency and temperature dependency.

  In the configuration of the vibration damping device 31 of the present embodiment, when the plurality of first plate members 10A to 10E are displaced in the direction of the arrow A, the shear force B is generated by the working fluid 14 and the plurality of first plate members 10A to 10E. This suppresses displacement and damps vibration.

  Even in the vibration damping device 31 of the present embodiment, the first plate members 10A, 10C to 10E other than the first plate member 10B located in the center are connected to each other by the first connecting portion 12 at both ends 17 in the horizontal direction. The center of the shear force B applied to each of the first plate members 10A to 10E (the position where the plate member 10A to 10E overlaps with the second plate members 11A to 11D in the direction in which the plate members are arranged in the working position, that is, the first plate members 10A to 10E). And the center of the first connecting part 12 connected to each of the first plate members 10A to 10E is coincident with the first plate member 10A to 10E. Generation of a bending moment due to the shearing force B applied to the plate materials 10A and 10C can be prevented.

  Therefore, only the shearing force B is applied to the first plate members 10A, 10C to 10E other than the first plate member 10B located at the center. Thereby, the connection part by the 1st connection part 12 which mutually connects several 1st board | plate materials 10A-10E can be decreased, and 1st board | plate materials 10A other than the 1st board | plate material 10B located in the center, The plate thickness of 10C to 10E can be reduced. Therefore, the assemblability of the vibration damping device 31 can be improved.

  Next, a vibration damping device 41 according to an embodiment in which the resistance generating member is a friction member will be described with reference to FIGS. In addition, about the same structure as said embodiment, the same reference number is attached | subjected and description is abbreviate | omitted and only a different part is demonstrated.

  4A shows a schematic front view of the vibration damping device 41 according to the present embodiment, FIG. 4B shows a longitudinal sectional view of the vibration damping device 41 according to the present embodiment, and FIG. ) Shows an explanatory view of the friction member 14 of the vibration damping device 41. FIG. 5 is a schematic exploded perspective view of the vibration damping device 41 according to the present embodiment. In FIG. 4, the upper structural member 2 and the lower structural member 3 are not shown, and in FIG. 5, the upper structural member 2, the lower structural member 3, and the friction member 14 are omitted.

  In the present embodiment, round holes (not shown) are formed in the first plate members 10A to 10C. In addition, a plurality of long holes 10i extending in the horizontal direction are formed in the second plate members 11A and 11B so as to correspond to round holes (not shown).

  The friction member 14 is positioned between the first plate members 10A to 10C and the second plate members 11A and 11B adjacent to each other. As shown in FIG. 4C, the friction member 14 includes an aluminum plate 14A, a sliding plate 14B, and a mating member 14C. The aluminum plate 14A is fixed to the first plate materials 10A to 10C, and the mating material 14C is fixed to the second plate materials 11A and 11B. The sliding plate 14B is fixed to the aluminum plate 14A.

  The aluminum plate 14A prevents displacement of the sliding plate 14B from the first plate materials 10A to 10C due to its flexibility.

  The sliding plate 14B includes a net-like base material made of expanded metal or a metal net, and a synthetic resin-made sliding layer that fills the mesh of the net-like body and is formed on one surface of the base material. This sliding layer contains a tetrafluoroethylene resin and serves as a contact surface with the counterpart material 14C.

  The mating member 14C is made of a stainless steel material, and attenuates vibration by a frictional force generated by a relative displacement in the horizontal direction with the sliding plate 14B.

  The vibration damping device 41 includes a pair of stress distribution fittings 19, a PC steel rod 20, and a pair of tightening nuts 21 corresponding to the long holes 10 i.

  The stress distribution fitting 19 is made of a steel material, has an annular shape, and is provided to distribute the tightening force of the PC steel rod 20 and the pair of tightening nuts 21 to the first plate members 10A and 10C.

  The PC steel bar 20 and the pair of tightening nuts 21 tighten the first plate members 10A and 10C from the left and right sides in FIG. 4B via the stress distribution fitting 19, and between the sliding plate 14B and the mating member 14C. So that the frictional force works.

  As shown in FIG. 5, the vibration damping device 41 includes a spacer 24 for securing a gap between the first plate members 10A to 10C and the second plate members 11A and 11B adjacent to each other.

  In the configuration of the vibration damping device 41 of the present embodiment, when the plurality of first plate members 10A to 10C are displaced in the direction of the arrow A, the frictional force B is generated by the friction member 14 and the plurality of first plate members 10A to 10C. This suppresses displacement and damps vibration.

  Also in the vibration damping device 41 of the present embodiment, the first plate members 10A and 10C located outside in the direction in which the plurality of first plate members 10A to 10C are arranged are the first end portions 17 in the horizontal direction. The center of the shear force B applied to each of the first plate members 10A to 10C (the working position, that is, the friction member 14 and the friction member 14 when the vibration damping device 1 is viewed from the front direction). The centroid position of the contact surface with the sliding member (first plate member) and the center (in the vertical direction) of the first connecting portion 12 connected to each of the first plate members 10A to 10C. It is configured such that four places on one side, the middle of the case where they are provided in a uniform arrangement, are substantially coincident with each other, so that it is possible to prevent the generation of a bending moment due to the frictional force B applied to the first plate members 10A, 10C. it can.

  For this reason, only the frictional force B is applied to the first plate members 10A and 10C located outside. Thereby, the connection location by the 1st connection part 12 which mutually connects several 1st board | plate materials 10A-10C can be decreased, and the board | plate thickness of 1st board | plate material 10A, 10C located outside is made thin. can do. Therefore, the assemblability of the vibration damping device 41 can be improved.

  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-described embodiment, the plurality of second plate members 11A to 11D are connected by the second connecting portion 13 at their upper end portions 18 and attached to the upper mounting member 6. Only 11C and 11D may be attached to the upper attachment member 6, and the plurality of second plate members 11 </ b> A to 11 </ b> D may be connected by the second connecting portion 13 at both ends in the horizontal direction. In the said structure, it is comprised so that the center of the frictional force concerning each 2nd board | plate material 11A-11D and the center of the several 2nd connection part 13 connected with each 2nd board | plate material 11A-11D may correspond. May be.

  With this configuration, it is possible to suppress the generation of a bending moment due to the frictional force applied to the second plate members 11A and 11B. Therefore, it is possible to reduce the number of connecting portions by the second connecting portion 13 that connects the plurality of second plate members 11A to 11D to each other, and to reduce the plate thickness of the second plate members 11A and 11B located outside. Can do. Therefore, the assemblability of the vibration damping device 41 can be further improved.

  Moreover, in said embodiment, although several 1st board | plate materials 10A-10E were connected by the 1st connection part 12 in those both ends 17 in a horizontal direction, several 1st board | plate materials 10A-10E are connected. The lower end portions may be connected by the first connecting portion 12, and the plurality of second plate members 11 </ b> A to 11 </ b> D may be connected by the second connecting portion 13 at their both ends in the horizontal direction.

  The resistance generating member 14 may be a viscoelastic member made of a viscoelastic material. Further, the number of the first plate members 10A to 10C (or 10A to 10D) and the second plate members 11A and 11B (or 11A to 11D) is not limited thereto, and may be changed as necessary.

DESCRIPTION OF SYMBOLS 1, 31, 41, 101: Damping apparatus, 2: Upper structural member 3: Lower structural member, 10A-10E: 1st board | plate material, 10h: Opening, 11A-11D: 2nd board | plate material, 14: Working fluid , Friction member, 12: first connecting portion, 13: second connecting portion, 17: both end portions

Claims (6)

A vibration damping device installed between the upper structural member and the lower structural member located below the upper structural member,
A plurality of plate members connected in parallel by one connecting portion and attached to one of the upper structural member and the lower structural member;
A plurality of other plate members that are connected in parallel by other connecting portions, are attached to the other of the upper structural member and the lower structural member, and are arranged so as to be alternately arranged with the one plurality of plate members,
The plurality of one plate member and the plurality of other plate members are positioned between one plate member adjacent to each other and the other plate member, and are moved by relative horizontal movement between the plurality of one plate member and the plurality of other plate members. Resistance generating means for generating resistance on the plate material of
The one connecting portion is provided in each of the regions on both sides in the horizontal direction of the one plate material that does not overlap when viewed from the front direction when the plurality of one plate material and the other plate material are installed and in operation. A vibration damping device for connecting the plurality of plate members in a region.   2. The vibration damping device according to claim 1, wherein a center of a resistance force applied to each one plate member and a center of the one connecting portion connected to each one plate member are substantially matched.   2. The vibration damping device according to claim 1, wherein a center of a resistance force applied to each one plate member and a center of a reaction force generated in the one connecting portion by the resistance force are substantially matched. The plurality of plate members are attached to the lower structural member,
Among the plurality of one plate members, one plate member positioned at both ends in the direction in which they are arranged constitutes a part of a container that has an opening in the upper part and forms a storage space in which a working fluid is stored,
The vibration damping device according to any one of claims 1 to 3, wherein the resistance force generating means is the working fluid.   The said resistance force generation means is a friction member, It is provided so that it may be pinched | interposed between said one board | plate material and said other board | plate material which adjoin each other. Vibration control device. The said other connection part is provided in the both ends of the horizontal direction of these other board | plate materials, respectively, The said other board | plate materials are connected in the said both end parts, It is any one of Claims 1-5. The vibration control device described in 1.

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