JP2016142111A - Vibration control structure - Google Patents

Abstract

The present invention provides a vibration damping structure capable of suppressing vibration and hardly causing performance degradation regardless of an input level of external force.
A damping structure 1 provided inside a rectangular frame 5 constituting a frame includes a damping device 10 having an elastic member formed from a long elastic material in an annular shape and a circumferential direction of the elastic member. The diagonal member 20 and the joint metal 30 connecting the rectangular frame 5 to at least two positions separated from each other, and the curvature of the elastic member is changed by the force transmitted from the diagonal member 20 as the rectangular frame 5 is deformed. By doing so, the damping device 10 exhibits a damping force.
[Selection] Figure 1

Description

  The present invention relates to a vibration damping structure provided inside a rectangular frame.

  2. Description of the Related Art Conventionally, a vibration damping structure has been proposed for absorbing the input energy against an external force such as an earthquake acting on a frame composed of columns and beams in a building or the like (for example, a patent) Reference 1). In the vibration damping structure described in Patent Document 1, the yield strength of the plastic material is set lower than the yield strength of the brace material, and the plastic material is yielded by the horizontal force acting on the frame, so that the input energy is obtained by the hysteresis energy. Is intended to absorb.

JP 2001-336304 A

  However, since the conventional vibration damping structure described in Patent Document 1 cannot anticipate hysteresis energy in the elastic state until the plastic material yields, it is not suitable for external forces with relatively low input levels such as small and medium earthquakes. There is a problem that it is difficult to suppress the vibration of the building. In addition, when the plastic material yields due to an external force with a large input level, there is a problem that the initial performance cannot be recovered, such as residual deformation due to plastic deformation or the deformation performance of the plastic material being lowered depending on the degree of plastic deformation. is there.

  It is an object of the present invention to provide a vibration damping structure that can suppress vibrations and hardly cause performance degradation regardless of the input level of external force.

  In order to achieve the above object, a vibration damping structure of the present invention is a vibration damping structure provided inside a rectangular frame constituting a frame, and has a damping member having an elastic member formed in an overall ring shape from a long elastic material. And a connecting member that connects the rectangular frame to at least two positions separated from each other along the circumferential direction of the elastic member, and the force transmitted from the connecting member along with the deformation of the rectangular frame The damping device exhibits a damping force by changing the curvature of the elastic member.

  According to such a vibration damping structure of the present invention, the damping force is exhibited by the curvature of the elastic member of the damping device being changed by the force transmitted from the connecting member, and energy is absorbed by this damping force. Become. The damping force accompanying the change in the curvature of the elastic member can be exerted from a minute deformation to a large deformation, that is, energy can be absorbed even with an external force having a small input level. Furthermore, since the deformed elastic member returns to its initial annular state by its own restoring force, residual deformation is unlikely to occur and deformation performance is unlikely to deteriorate, so performance is unlikely to deteriorate and energy absorption performance is good. Can be maintained.

  At this time, in the vibration damping structure of the present invention, the elastic member is formed in one of a spiral shape, a concentric circular shape, a concentric elliptical shape, or a concentric oval shape in which the elastic material is overlapped in the radial direction. It is preferable.

  According to this configuration, since the elastic member of the attenuation device is formed in any one of a spiral shape, a concentric circle shape, a concentric ellipse shape, and a concentric oval shape, an attenuation device having an appropriate shape according to the application is provided. You can choose. Further, if the elastic member is formed in a spiral shape, the elastic member can be formed by winding a single long plate-like elastic material in a spiral shape, which reduces the labor and cost for manufacturing. it can. On the other hand, if the elastic member is formed in a concentric circle shape, a concentric ellipse shape or a concentric oval shape, the elastic member can be formed by stacking a plurality of annular elastic materials.

  Furthermore, in the vibration damping structure of the present invention, the damping device has a viscoelastic member that is inserted between the elastic members that overlap in the radial direction, or is inserted between the elastic members that overlap in the radial direction. It is preferable to have a friction member or to have a friction surface in which the elastic members overlapped in the radial direction are in sliding contact with each other.

  According to this configuration, the viscoelastic member or the friction member is inserted between the elastic members, or the elastic members are configured to come into sliding contact with each other on the friction surface, thereby accompanying a change in the curvature of the elastic member. Thus, viscous resistance and frictional resistance are generated, and damping force is exhibited by this resistance. Such damping force due to viscous resistance and frictional resistance can be exerted from minute deformation to large deformation, that is, from a small input level to a large input level, it absorbs energy regardless of the external force level, and vibrates. Can be suppressed. Furthermore, even when the elastic member returns to the initial annular state by its own restoring force, the damping force due to viscous resistance or frictional resistance is exerted, so that the impact and acceleration due to sudden restoration are suppressed and the initial It is possible to return slowly to the state.

  In the vibration damping structure of the present invention, it is preferable that the connecting member connects two positions facing the radial direction of the elastic member and the rectangular frame.

  According to this configuration, the connecting member is connected to two positions facing the radial direction of the elastic member, whereby the annular elastic member can be deformed in the radial direction, and the curvature of the entire elastic member can be effectively changed. Can exert a damping force.

  Furthermore, in the vibration damping structure of the present invention, it is preferable that the connection member includes an oblique member having one end connected to the elastic member and the other end connected to the rectangular frame.

  According to this configuration, since the connecting member has the diagonal member connected to the elastic member and the rectangular frame, a brace-type vibration damping structure is configured, and deformation of the rectangular frame can be efficiently transmitted to the elastic member. it can.

  In the vibration damping structure of the present invention, the connection member may include a bonding material that bonds the elastic member to the rectangular frame.

  According to this configuration, by joining the elastic member to the rectangular frame with the bonding material, the deformation of the rectangular frame can be directly transmitted to the elastic member, and the damping force can be efficiently exhibited.

  In the vibration damping structure of the present invention, a plurality of the damping devices are provided adjacent to each other in at least one of the vertical direction and the left-right direction, and includes a connecting member that connects the elastic members of the adjacent damping devices. It is preferable to be configured.

  According to this configuration, the elastic members of the plurality of adjacent damping devices are coupled by the coupling member, so that the elastic members of each of the plurality of damping devices are deformed in conjunction with each other, and the plurality of the damping devices connected to each other. A large damping force can be obtained.

  According to the present invention described above, it is possible to expect a vibration suppressing effect by exerting a damping force due to a change in the curvature of the elastic member even for an external force having a small input level, and an initial force can be expected by the restoring force of the elastic member. By returning to the annular state, the energy absorption performance can be maintained well.

It is a front view which shows the damping structure which concerns on 1st Embodiment of this invention. It is a front view which shows the damping device used for the said damping structure. It is sectional drawing which expands and shows a part of said attenuation device. It is a front view which shows the effect | action of the said attenuation device. It is a front view which shows the modification of the said damping structure. It is a front view which shows the other modification of the said damping structure. It is a front view which shows the other modification of the said damping structure. It is a perspective view which shows the damping structure which concerns on 2nd Embodiment of this invention. It is a front view which shows the damping structure which concerns on 3rd Embodiment of this invention. It is a front view which shows the modification of the damping device in the damping structure of this invention. It is sectional drawing which expands and shows a part of said attenuation device.

  Hereinafter, a damping structure according to a first embodiment of the present invention will be described with reference to FIGS. The vibration damping structure 1 according to the present embodiment is provided inside a rectangular frame 5 of a framework having a column 2 as a pair of left and right vertical members and a beam 3 and an intermediate beam 4 as a pair of upper and lower horizontal members in a building. It is composed of a brace structure. Here, as the building, for example, a small-scale building having 2 to 3 floors such as a detached house with a wooden frame structure, an appropriate number of damping structures 1 are provided at appropriate positions in the building. ing.

  The vibration control structure 1 is provided at two locations above and below one layer of the building. Specifically, the upper vibration damping structure 1 is provided inside an upper rectangular frame 5A formed by the left and right columns 2, the upper beam 3 and the intermediate beam 4, and the lower vibration damping structure 1 is Are provided in the lower rectangular frame 5B formed by the left and right columns 2, the intermediate beam 4, and the beam 3 (or base) on the lower floor. Each of the vibration damping structures 1 includes a damping device 10, and a plurality of diagonal members 20 and a joint hardware 30 as connecting members that connect the damping device 10 to the rectangular frame 5.

  As shown in FIGS. 2 and 3, the damping device 10 includes a viscoelastic material interposed between an elastic member 11 formed in an overall ring shape from a long plate-like elastic material 11 </ b> A and an elastic member 11 overlapping in the radial direction. Viscoelastic member 12 made of 12A. The elastic member 11 is configured such that the elastic material 2A is formed in a spiral shape and is stacked in a plurality of layers in the radial direction. The viscoelastic member 12 is configured such that a viscoelastic material 12A is superimposed on the elastic material 11A and formed into a spiral shape, and is bonded to the inner and outer elastic materials 11A opposed in the radial direction.

  The elastic member 11 is formed by stacking four layers of the elastic material 11A in a spiral shape, and stacking five layers of the elastic material 11A at a position where the inner end portion and the outer end portion overlap each other. The elastic material 11A can be made of a material such as spring steel or carbon fiber reinforced plastic (CFRP), and is formed in a long plate shape having an appropriate plate thickness and plate width. Further, the elastic material 11A is bent in the plate thickness direction and formed into the annular elastic member 11, and the internal stress is within the elastic range and has a restoring force to restore linearly. Therefore, the elastic member 11 is formed with a restoring force that tends to return to an annular shape when deformed by an external force from the initial state of the entire annular shape.

  The viscoelastic member 12 is provided integrally with the elastic member 11 by adhering both surfaces of a long sheet-like viscoelastic material 12A to the inner and outer elastic materials 11A. The viscoelastic material 12A is configured by a visco-elastic material (VEM) that absorbs energy by generating heat internally by being deformed by external force or vibration and converting vibration energy into heat energy. The viscoelastic member 12 is not limited to a long sheet-like viscoelastic material 12A bonded to the elastic material 11A, but a liquid or gel viscoelastic material 12A in a gap between the elastic members 11 formed in a spiral shape. It may be formed integrally with the elastic member 11 by solidifying after filling.

  One end of the diagonal member 20 is connected to the elastic member 11 of the damping device 10, and the other end is connected to the left and right columns 2 via the joint hardware 30. Four such diagonal members 20 are connected to one damping device 10, and two of the four diagonal members 20 are connected to two positions facing each other in the radial direction of the elastic member 11. Has been. That is, in FIG. 1, the two diagonal members 20A that descend to the right are provided on a substantially straight line, and the two diagonal members 20B that rise to the right are provided on a substantially straight line. 20 constitutes an X-type brace centered on the damping device 10.

  Each diagonal member 20 includes a long diagonal member body 21 and a connecting metal member 22 that connects the diagonal member body 21 to the elastic member 11 of the damping device 10. The diagonal member body 21 is composed of, for example, a square pipe having a cross-sectional dimension of 45 mm × 45 mm and a plate thickness of 1.6 mm. The connection hardware 22 is formed, for example, by bending a steel plate having a thickness of 3.2 mm. As shown in FIG. 3, the connection hardware 22 extends from the bottom surface portion 221 to the outer peripheral side of the elastic member 11 along the side surface of the diagonal member main body 21. And has a pair of side surface portions 222 and is formed in a U-shaped cross section.

  The diagonal member body 21 and the connection hardware 22 are connected to each other by a pair of side surfaces 222 and a bolt 23 that penetrates the diagonal member body 21 and a nut 24 that is screwed to the bolt 23. Thus, by connecting the diagonal member body 21 and the connection hardware 22, the elastic member 11 of the damping device 10 is surrounded by the bottom surface portion 221 and the pair of side surfaces 222 of the connection hardware 22 and the end portion of the diagonal material body 21. Held. Further, a tightening screw 25 that presses and tightens the elastic member 11 radially outward is screwed to the bottom surface portion 221 of the connection hardware 22.

  The metal joint 30 is formed to include a fixed piece portion 31 fixed to the column 2 by screws or the like, and a pair of connecting piece portions 32 rising from the fixed piece portion 31. The diagonal member body 21 is rotatably connected to the diagonal member body 21 by a bolt 33 penetrating the member body 21. When the rectangular frame 5 is deformed due to an external force acting on the building, the joint metal 30 generates an axial force on the diagonal member 20 along with the deformation. Thus, the elastic member 11 is deformed by generating an axial force on the diagonal member 20 and transmitting the axial force to the damping device 10.

  Specifically, when an external force such as an earthquake acts on the framework shown in FIG. 1 from the left to the right in the drawing, the rectangular frame 5 is deformed into a parallelogram so that the upper side thereof is shifted to the right. Along with the deformation of the rectangular frame 5, a compression axial force acts on the two diagonal members 20A, and a tensile axial force acts on the two diagonal members 20B. As a result, as shown in FIG. 4, the elastic member 11 of the damping device 10 is deformed into an elliptical shape that is stretched by being pulled to the lower left and the upper right, and the curvature of each part changes. When the curvature of the elastic member 11 changes in this manner, the elastic materials 11A that overlap inward and outward in the radial direction are displaced from each other, and the viscoelastic member 12 therebetween undergoes shear deformation, and this deformation causes a damping force due to the internal viscosity of the viscoelastic material 12A. The energy is absorbed by the damping force of the viscoelastic member 12.

  Further, when the framework is deformed in the reverse direction due to the external force, the axial force of each diagonal member 20 acts in the opposite direction, so that the damping device 10 is also deformed into an elliptical shape in the opposite direction, thereby absorbing energy. Done. That is, the damping device 10 absorbs vibration energy by repeatedly receiving deformations in both the left and right directions against disturbances in which left and right external forces repeatedly act on the building, such as earthquake motion. Furthermore, when the external force is lost and the skeleton returns to its original shape, the damping device 10 returns to the initial annular state by the restoring force of the elastic member 11. As described above, even when the damping device 10 returns to the initial state, the damping force of the viscoelastic member 12 is exhibited, so that the damping device 10 returns to the initial state at a moderate speed.

  The vibration damping structure of the present embodiment is not limited to being provided in two upper and lower stages as shown in FIG. 1, and may be installed as shown in FIG. In FIG. 5, a building frame has a rectangular frame 5 formed by left and right columns 2 and upper and lower beams 3, and a damping structure 1 </ b> A is provided inside the rectangular frame 5. Similar to the above-described vibration damping structure 1, the vibration damping structure 1 </ b> A includes the damping device 10, and a plurality of diagonal members 20 and joint hardware 30 as connecting members that connect the damping device 10 to the rectangular frame 5. Configured.

  Further, in the vibration damping structure of the present embodiment, the connection member is not limited to the one having the diagonal member 20 as shown in FIGS. 1 to 5, and as shown in FIGS. It may be connected directly to. In FIG. 6, the building framework has left and right columns 2, upper and lower beams 3, and upper and lower intermediate beams 4, and upper and lower columns 2, upper-level beams 3, and upper intermediate beams 4. The rectangular frame 5C is formed, the left and right columns 2 and the upper and lower intermediate beams 4 form a middle rectangular frame 5D, and the left and right columns 2, the lower intermediate beam 4 and the lower floor beams 3 form a lower rectangular shape. A frame 5E is formed, and a damping structure 1B is provided inside each rectangular frame 5C, 5D, 5E. Each of the vibration damping structures 1 </ b> B includes a damping device 10 and a bonding material 40 as a connecting member that connects the damping device 10 to the rectangular frame 5.

  The bonding material 40 is formed into a hat shape by bending a steel plate, surrounds the elastic member 11 of the damping device 10 from the inside in the radial direction, and is fixed to the column 2, the beam 3, and the intermediate beam 4 with screws. The damping device 10 is directly fixed to the rectangular frames 5C, 5D, 5E. That is, in the upper rectangular frame 5C, the elastic member 11 of the damping device 10 is bonded to the left and right columns 2, the upper beam 3 and the upper intermediate beam 4 by the bonding material 40 at four positions on the upper, lower, left and right sides. ing. Inside the middle rectangular frame 5D, the elastic member 11 of the damping device 10 is joined to the left and right pillars 2 and the upper and lower intermediate beams 4 by joint members 40 at the four places on the top, bottom, left and right. Inside the lower rectangular frame 5E, the elastic member 11 of the damping device 10 is joined to the left and right columns 2, the lower beam 3 and the upper intermediate beam 4 by the joining material 40 at the four positions on the upper, lower, left and right sides. .

  In FIG. 7, the building framework has left and right columns 2, upper and lower beams 3, and intermediary columns 5, and one rectangular frame 5 </ b> F is formed by the left and right columns 2, the upper and lower beams 3, and the intermediary columns 6. The other rectangular frame 5F is formed by the left and right other columns 2, the upper and lower beams 3, and the inter-columns 6, and the damping structure 1C is provided inside each of the left and right rectangular frames 5F. These damping structures 1C include a plurality of damping devices 10 arranged in the vertical direction, a bonding material 40 as a connecting member for connecting these damping devices 10 to the rectangular frame 5F, and the damping devices 10 adjacent to each other in the vertical direction. And a connecting member 50 that connects the elastic members 11 to each other. The bonding material 40 is a member similar to that shown in FIG.

  The connecting member 50 includes a pair of members formed into a hat shape by bending a steel plate, surrounds the elastic member 11 of the damping device 10 from the side, and couples the pair of members with bolts, thereby adjacent damping. The apparatus 10 is connected. Therefore, the elastic members 11 of the damping devices 10 adjacent to each other in the left and right rectangular frames 5F are connected to each other by the connecting members 50. The elastic members 11 of the respective damping devices 10 have two columns on the left and right sides. Each of the elastic members 11 of the uppermost and lowermost damping devices 10 is joined to the upper and lower beams 3 by the joining material 40, respectively.

  According to the vibration damping structure 1, 1A, 1B, 1C of the present embodiment as described above, the following effects can be obtained. That is, the elastic member 11 of the damping device 10 is connected to the rectangular frame 5 by the diagonal member 20, the joint metal 30, and the bonding member 40 that are connecting members, and the curvature of the elastic member 11 changes as the rectangular frame 5 is deformed. Thus, the damping force of the viscoelastic member 12 is exhibited, and energy is absorbed by this damping force. Such a damping force can be exerted from a minute deformation to a large deformation, that is, the viscoelastic member 12 can exert a damping force even for an external force of a small input level. A vibration suppressing effect can be expected.

  Furthermore, the energy absorbing performance can be favorably maintained by returning the damping device 10 to the initial annular state by the restoring force of the elastic member 11. Thus, even when the damping device 10 returns to the initial annular state by the restoring force of the elastic member 11, the damping device 10 exhibits the damping force of the viscoelastic member 12, so that the damping device 10 is in the initial state at a moderate speed. Thus, it is possible to return to the initial state without generating extra vibration or shock.

  Further, since the elastic member 11 is formed in a spiral ring shape, the elastic member 11 can be formed by winding a single long plate-shaped elastic material 11A in a spiral shape, and the elastic material 11A is long. By forming the sheet-like viscoelastic material 12A and then winding it, the molding process of the viscoelastic member 12 can be simplified. Therefore, it is possible to reduce labor and cost for manufacturing the attenuation device 10.

  Next, a vibration damping structure according to the second embodiment of the present invention will be described with reference to FIG. The vibration damping structure 1 of this embodiment is different from the first embodiment in that it is applied to a building having a large span frame structure using a large cross-section laminated lumber. The ramen frame R is configured to include a column 2A composed of a large-section laminated timber column erected on the foundation F, and a beam 3A composed of a large-section laminated timber column rigidly connected to the upper end of the column 2A. A plurality of lines are arranged side by side in the column line direction by a predetermined span. The adjacent frame frames R are connected to each other by a beam 3B and an intermediate beam 4A. Further, in some of the frame frames R, an intermediate column 6A is provided on the foundation F and the beam 3A, and an intermediate beam 4B is installed between the intermediate column 6A and the column 2A.

  The vibration damping structure 1 is provided in two directions, that is, a direction in which the frame frames R are connected to each other and a tension direction in the frame frame R, and is provided in two upper and lower stages in each direction. In the girder direction, the upper vibration damping structure 1 is provided inside the upper rectangular frame 5G formed by the left and right columns 2A, the girder beam 3B, and the intermediate beam 4A. 2A, the intermediate beam 4A, and the base beam F1 are provided inside the lower rectangular frame 5H. In the tension direction, the upper vibration damping structure 1 is provided inside the upper rectangular frame 5J formed by the pillar 2A, the intermediate pillar 5A, the beam 3A, and the intermediate beam 4B, and the lower vibration damping structure 1 is formed by the pillar 2A. And the lower rectangular frame 5K formed by the inter-column 5A, the intermediate beam 4B, and the foundation beam F2. These damping structures 1 are the same as those in the first embodiment.

  Next, a damping structure according to a third embodiment of the present invention will be described with reference to FIG. The vibration damping structure 1 of this embodiment is different from the first and second embodiments in that it is applied to a building having a steel frame frame. The ramen frame has a pillar 2B made of a square steel pipe and a beam 3C made of H-shaped steel that is rigidly connected to the pillar 2B. 6B is installed. The vibration damping structure 1 is provided inside a rectangular frame 5L formed by the pillars 2B and the intermediate pillars 6B and the upper and lower beams 3C. These vibration damping structures 1 have substantially the same configuration as that of the first embodiment, but instead of the joint hardware 30, as a connecting member, a bracket for connecting a plurality of diagonal members 20 to the rectangular frame 5L. 30A is fixed to the column 2B and the beam 3C by welding.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

  For example, in the said embodiment, although the case where the damping structure 1,1A, 1B, 1C was applied to the building of a wooden frame structure, a ramen structure using a large cross-section laminated material, and a steel frame ramen structure, There is no particular limitation on the structure type or structure type of the building to which the vibration control structure is applied. That is, the building may have a wooden frame structure, a light steel frame structure, a reinforced concrete structure, or a steel reinforced concrete structure. Furthermore, the vibration damping structure of the present invention is not limited to being applied to a building, and may be applied to various structures and workpieces, or may be applied to any other article.

  Moreover, in the said embodiment, although the elastic member 11 of the damping device 10 was formed in the spiral annular shape, it is not restricted to this, An elastic member is any one of concentric circle shape, concentric ellipse shape, or a concentric ellipse shape. It may be formed. Moreover, in the said embodiment, although the damping device 10 comprised the elastic member 11 and the viscoelastic member 12, it is not restricted to this, As a damping device, it replaces with the elastic member 11, and a friction member is elastic. It may be inserted between the elastic materials of the members, or the elastic materials of the elastic members that overlap in the radial direction may be in sliding contact with each other on the friction surface. When such a friction member or a friction surface is provided, a damping force can be exhibited by generating a frictional resistance in accordance with a change in the curvature of the elastic member, and the same effect as that of the above embodiment can be achieved. .

  In addition, the elastic member 11 of the damping device 10 is not limited to the long plate-like elastic material 11 </ b> A formed in an annular shape as in the above embodiment, and may have a structure as shown in FIGS. 10 and 11. Good. 10 and 11, the damping device 10 </ b> A includes an elastic member 11 </ b> B that is formed in an annular shape from an elongated elastic material 11 </ b> C. The elastic member 11B is formed by winding the elastic material 11C a plurality of times in the axial direction and the radial direction. The elastic material 11C can be made of various materials such as a steel wire such as a PC steel wire or a PC stranded wire, or a wire material twisted of carbon fiber or aramid fiber, and is formed into a long wire having an appropriate diameter. Is formed.

  The attenuation device 10A is connected to the rectangular frame by the diagonal member 20 similar to that of the above embodiment. The diagonal member 20 includes an oblique member main body 21 and a connection metal member 22, and the connection metal member 22 is provided inside the bottom surface portion 221 and presses the elastic member 11B as shown in FIG. It has a pressing plate 26 to be configured. By pressing the pressing plate 26 against the elastic member 11B with the tightening screw 25, the elastic material 11C wound a plurality of times is prevented from being separated. The elastic member 11B is deformed so as to change its curvature in response to an external force, so that the elastic materials 11C overlapping in the axial direction and the radial direction rub against each other, and a damping force is exhibited by this frictional resistance. It has become. The damping device 10A may be configured by filling a gap between the elastic materials 11C with a viscoelastic material. According to this, the damping device 10A can exert a damping force by the viscous resistance of the viscoelastic material accompanying a change in curvature. .

  Moreover, in the said embodiment, as a connection member which connects attenuation | damping apparatus 10 and 10A to the rectangular frame 5, the thing of the X-type brace type which has the four diagonal members 20, or the attenuation | damping apparatus 10 and 10A is the rectangular frame 5 However, the connecting member is not particularly limited as long as it can connect the attenuation device to the rectangular frame. That is, in the above-described embodiment, the four diagonal members 20 as the connection members are used as the X-type braces, but may be one-sided up / type braces or V-type braces. Further, a wall member such as a waist wall or a hanging wall may be used as a connecting member, and the attenuation device may be connected to the rectangular frame via the wall member. Furthermore, the rectangular frame is not limited to the rectangular frame formed by the pillar 2, the beam 3, the intermediate beam 4, the intermediary column 6 and the like as in the above-described embodiment, but a rectangular frame formed by an appropriate member. Applicable.

1, 1A, 1B, 1C Damping structure 5 Rectangular frame 10, 10A Damping device 11, 11B Elastic member 11A, 11C Elastic material 12 Viscoelastic member 12A Viscoelastic material 20 Diagonal material (connection member)
30 Metal fittings (connection members)
40 Bonding material (connection member)
50 connecting members

Claims (7)

A vibration damping structure provided inside a rectangular frame constituting the frame,
A damping device having an elastic member formed in an overall ring shape from a long elastic material;
A connecting member that connects the rectangular frame with at least two positions that are separated from each other along the circumferential direction of the elastic member;
A damping structure in which the damping device exerts a damping force when the curvature of the elastic member is changed by a force transmitted from the connection member as the rectangular frame is deformed.   2. The elastic member according to claim 1, wherein the elastic member is formed in any one of a spiral shape, a concentric circular shape, a concentric elliptical shape, and a concentric elliptical shape in which a plurality of the elastic materials are overlapped in the radial direction. Damping structure.   The damping device has a viscoelastic member inserted between the elastic members overlapped in the radial direction, or has a friction member inserted between the elastic members overlapped in the radial direction, or the radial direction The vibration damping structure according to claim 2, wherein the elastic members overlapped with each other have a friction surface in sliding contact with each other.   The said connection member connects the two positions which oppose the radial direction of the said elastic member, and the said rectangular frame, The damping structure as described in any one of Claims 1-3 characterized by the above-mentioned.   5. The connection member according to claim 1, wherein the connection member includes an oblique member having one end connected to the elastic member and the other end connected to the rectangular frame. The described vibration control structure.   The damping structure according to any one of claims 1 to 4, wherein the connecting member includes a bonding material that bonds the elastic member to the rectangular frame.   A plurality of the damping devices are provided adjacent to each other in at least one of a vertical direction and a horizontal direction, and are configured to include a connecting member that connects the elastic members of the adjacent damping devices. Item 7. The vibration damping structure according to any one of Items 1 to 6.

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