JP6741424B2 - Vibration control device and building vibration control structure - Google Patents

Description

The present invention relates to a vibration damping device that suppresses vibration generated in a building. The present invention also relates to a building vibration damping structure including a vibration damping device.

In a vibration damping device installed in a structure of a building including a pair of frame members (columns and beams) spaced apart from each other, a composite type using both a friction material and a viscoelastic material as a vibration energy absorbing material. Damping devices are known. For example, Patent Document 1 discloses a stud type damping device for damping vibration of a building, which includes a first plate member attached to an upper member, a second plate member attached to a lower member, and a first plate member. A third plate member provided between the plate member and the second plate member; a viscoelastic damper provided between one of the first and second plate members and one surface of the third plate member; A damping device is described that includes a friction damper provided between the other of the first and second plate members and the other surface of the third plate member. In this damping device, since the viscoelastic damper and the friction damper are provided on different surfaces of the third plate member, it is difficult for load to be generated in the connecting portion between the viscoelastic damper and the friction damper, and the damping device is not deformed. It can be prevented.

Further, Patent Document 2 discloses a wall-type vibration damping damper installed in a building to absorb vibration energy caused by an earthquake, which is provided in a fixed state between a pair of first steel plates and first steel plates. A first viscoelastic body sandwiched between two steel plates, and a friction material disposed between a pair of first steel plate and second steel plate, and a sliding mechanism that slides in parallel to the side surface of the second steel plate. And a second viscoelastic body sandwiched between the pair of third steel plates provided so as to sandwich the pair of first steel plates and the first steel plate. The first viscoelastic body and the sliding mechanism are connected to the upper girder, and the second viscoelastic body is connected to the lower girder. The sliding mechanism is arranged close to the upper floor beam, and the first viscoelastic body and the second viscoelastic body are arranged below the sliding mechanism.

JP-A-2009-228834 (paragraph 0013, paragraph 0014, FIG. 3) JP-A-2007-247278 (paragraph 0005, paragraph 0011, paragraph 0012, FIG. 1)

In the composite type vibration damping device, reduce the space occupied when installed in the structure, improve the reliability and reproducibility of the vibration damping performance, and adjust the vibration energy absorbing material according to the required vibration damping performance. It is desired that the surface area can be easily increased or decreased.

One embodiment of the present invention is a vibration damping device installed in a structure including a pair of frame members spaced apart from each other, the first substrate being attached to the first frame member, and the second substrate. A second substrate attached to the frame member and arranged adjacent to the first substrate, the in-plane direction with respect to the first substrate with the relative movement of the first frame member and the second frame member. And a second substrate that is laterally displaced, a first surface provided on the first substrate, a second surface provided on the second substrate and facing the same side as the first surface, and a first substrate and a second substrate. A holding plate that is superposed and has a holding surface facing the first surface and the second surface, a viscoelastic material that is held between the first surface and the holding surface, and a holding plate that is held between the second surface and the holding surface. And a friction material disposed on one side in the direction of relative displacement of the first substrate and the second substrate with respect to the viscoelastic material , the first substrate being supported by the first frame member. The second substrate includes a support plate and a first connection plate connected to the first support plate and having a first surface. The second substrate is a second support plate supported by the second frame member and a second support plate. A second connecting plate having a second surface, the first supporting plate and the second supporting plate being arranged side by side in a direction orthogonal to the direction of the relative displacement, and the first connecting plate and the second connecting plate. The connecting plate is a vibration damping device arranged side by side in the direction of the relative displacement .

Another aspect of the present invention is to provide first and second frame members spaced apart from each other, and a plurality of vibration damping devices installed between the first frame member and the second frame member. A vibration damping structure for a building, comprising: a plurality of vibration damping devices, each of the plurality of vibration damping devices being attached to a first frame member and a second frame member and being adjacent to the first substrate. A second substrate that is arranged in a horizontal direction and that is displaced in the in-plane direction and the lateral direction with respect to the first substrate with the relative movement of the first frame member and the second frame member. The first surface provided on one substrate, the second surface provided on the second substrate and facing the same side as the first surface, and the first surface and the second substrate are overlapped with each other and face the first surface and the second surface. A holding plate having a holding surface, a viscoelastic material sandwiched between the first surface and the holding surface, and a viscoelastic material sandwiched between the second surface and the holding surface. A plurality of vibration damping devices, which are provided on one side in the direction of relative displacement with respect to the two substrates, are arranged side by side in the direction of relative displacement, and are a building vibration damping structure.

In the vibration damping device according to one aspect, since the first substrate and the second substrate are displaced in the in-plane direction and the lateral direction with respect to each other, a wall-type or stud-type is added to the structure of the building including the pair of frame members. It can be installed as a vibration control device. In general, a wall-type or stud-type vibration control device has an advantage that it is easier to provide an opening in an outer wall of a building having a built-in vibration control device, as compared with a brace-type vibration control device diagonally arranged in a structure. There is. Moreover, in the vibration damping device of this aspect, since the viscoelastic material and the friction material are arranged on one side in the direction of relative displacement between the first substrate and the second substrate with respect to each other, the vibration damping device in the direction of this relative displacement. It is possible to reduce the outer dimensions of the device, and thus reduce the space occupied when the vibration damping device is installed in the structure. Further, since the viscoelastic material and the friction material are arranged side by side in the direction of relative displacement between the first substrate and the second substrate, the moment when the viscoelastic material and the friction material perform damping operation according to their respective characteristics. Is avoided, and the bending moment generated in the first substrate, the second substrate and the holding plate between the viscoelastic material and the friction material is reduced. As a result, the reliability and reproducibility of the vibration damping performance of the vibration damping device are improved.

Further, in the vibration damping device according to the present aspect, a viscoelastic material and a friction material are provided between the first surface and the second surface facing the same side and the holding surface facing the first surface and the second surface. Since the structure is sandwiched, it is possible to promote the thinning of the entire device. Moreover, since the holding plate having the holding surface can be arranged outside the viscoelastic material and the friction material in the thickness direction of the vibration damping device, the viscoelastic material and the friction material are additionally arranged outside the holding plate. It's easy to do. Therefore, in the vibration damping device of this aspect, the surface area of the vibration energy absorbing material can be easily increased or decreased according to the required vibration damping performance.

The building vibration damping structure according to another aspect is provided with the vibration damping device according to one aspect, so that the damping performance is excellent in reliability and reproducibility, and can exhibit the vibration damping performance according to the requirements of the building. .. Further, since the space occupied by the vibration damping device in the structure including the first and second frame members can be reduced, an opening (door) having a desired shape and size can be formed on the outer wall of the building having the vibration damping structure. , Windows, etc.) are easy to provide.

It is an exploded perspective view of a damping device by one embodiment. FIG. 8 is a perspective view of a vibration damping device according to another embodiment. FIG. 3 is an exploded perspective view of the vibration damping device of FIG. 2. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2. FIG. 5 is a cross-sectional view taken along the line VV of FIG. 2. FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 2. FIG. 7 is a sectional view taken along the line VII-VII in FIG. 2. FIG. 8 is a cross-sectional view corresponding to FIG. 7, showing a state where the relative displacement amounts of the first and second substrates are small. FIG. 8 is a cross-sectional view corresponding to FIG. 7, showing a state where the relative displacement amounts of the first and second substrates are large. It is sectional drawing which shows the modification of the damping device of FIG. It is sectional drawing which shows the other modification of the damping device of FIG. It is sectional drawing which shows the further another modified example of the damping device of FIG. It is a front view of the damping structure of a building by one embodiment. It is a front view of the damping structure of a building by other embodiments. It is a front view which shows the modification of the damping structure of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Corresponding components are designated by common reference numerals throughout the drawings.
FIG. 1 shows a vibration damping device 10 according to one embodiment. The vibration damping device 10 is installed in a structure of a building including a pair of frame members (not shown) that are spaced apart from each other, and suppresses vibration generated in the building due to an earthquake, a strong wind, or the like. is there. As will be described later, the vibration damping device 10 has a composite structure in which both a viscoelastic material and a friction material are used as vibration energy absorbing materials. Further, the frame members constituting the structure of the building are columns and beams, and the vibration damping device 10 has a wall-type or stud-type configuration installed between a pair of beams or between a pair of columns.

As shown in FIG. 1, the vibration damping device 10 is attached to a first frame member (beam or column not shown) and a first substrate 12 and a second frame member (beam or column not shown), A second substrate 14 disposed adjacent to the first substrate 12 and a holding plate 16 that is superposed on the first substrate 12 and the second substrate 14 are provided. In this embodiment, the first substrate 12 includes a first support plate 18 supported by the first frame member and a first connection plate 20 connected to the first support plate 18. The second substrate 14 also includes a second support plate 22 supported by the second frame member and a second connection plate 24 connected to the second support plate 22.

The first support plate 18 and the second support plate 22 may have a shape of steel material such as H-section steel, and may be formed from a material such as metal having desired rigidity. The first connecting plate 20 and the second connecting plate 24 can have a plate shape such as a general steel plate or a stainless steel plate (SUS plate), and can be formed from a material such as a metal having a desired rigidity. In particular, the second connecting plate 24 is preferably formed of a SUS plate from the viewpoint of providing a friction surface with a friction material described later. The first support plate 18 and the first connecting plate 20 are fixed to each other by a general fixing means such as a bolt/nut. FIG. 1 shows two bolts 26 of the bolts used for simplicity. Similarly, the second support plate 22 and the second connecting plate 24 are fixed to each other by a general fixing means such as a bolt/nut. FIG. 1 shows two bolts 28 of the bolts used for simplicity. The configurations of the first substrate 12 and the second substrate 14 are not limited to the above configurations, and the first support plate 18 and the first connecting plate 20 may be integrally formed of the same material or formed of different materials and integrated by welding or the like. The second support plate 22 and the second connecting plate 24 may be integrally formed of the same material or may be formed of different materials and integrated by welding or the like. Good.

As shown in FIG. 1, the dimension of the first support plate 18 in the lateral direction (X direction in the drawing) is substantially the same as the dimension of the second support plate 22 in the lateral direction (X direction in the drawing), while The dimension of the plate 18 in the vertical direction (Z direction in the drawing) is smaller than the dimension of the second support plate 22 in the vertical direction (Z direction in the drawing). Further, the thickness (dimension in the Y direction in the drawing) and the cross-sectional shape of the first support plate 18 are substantially the same as the thickness (dimension in the Y direction in the drawing) and the cross-sectional shape of the second support plate 22. Both the first support plate 18 and the second support plate 22 have substantially flat main surfaces 18a and 22a facing the same direction (Y direction), and the main surfaces 18a and 22a are substantially on the same virtual plane. In the state of being arranged in the vertical direction (Z direction).

As shown in FIG. 1, the first connecting plate 20 includes a connecting portion 20a placed on the main surface 18a of the first support plate 18 and an extending portion 20b extending from the connecting portion 20a to the outside of the main surface 18a. Have one. The entire second connecting plate 24 is placed on the main surface 22 a of the second supporting plate 22. The extension portion 20b of the first connecting plate 20 is placed on the main surface 22a of the second supporting plate 22 and is arranged side by side in the lateral direction (X direction) with respect to the second connecting plate 24.

The first substrate 12 is provided with a first surface 30 that faces the outside, and the second substrate 14 is provided with a second surface 32 that faces the same outside as the first surface 30. The first surface 30 and the second surface 32 are both flat and arranged substantially parallel to each other. Further, the first surface 30 and the second surface 32 are arranged on the same virtual plane, or are respectively arranged on two virtual planes having a slight height difference. In the embodiment of FIG. 1, the extended portion 20 b of the first connecting plate 20 is provided with the first surface 30 facing the same direction (Y direction) as the main surface 18 a of the first supporting plate 18, and the second connecting plate 24 is provided. The second surface 32 facing the same direction (Y direction) as the main surface 22a of the second support plate 22 is provided. The first surface 30 and the second surface 32 are arranged side by side in the lateral direction (X direction).

When the pair of frame members of the structure in which the vibration damping device 10 is installed are upper and lower beams, usually, the first substrate 12 is directly or indirectly attached to the upper beam, and the second substrate 14 is directly or indirectly attached to the lower beam. It is attached indirectly. Alternatively, the first substrate 12 can be attached to the lower beam and the second substrate 14 can be attached to the upper beam. When the pair of frame members of the structure in which the vibration damping device 10 is installed are left and right columns, the first substrate 12 is directly or indirectly attached to one column and the second substrate 14 is directly or indirectly attached to the other column. It is attached indirectly. In either case, the first substrate 12 and the second substrate 14 are relatively movable in the longitudinal direction between the first frame member (beam or column) and the second frame member (beam or column). Accordingly, it is configured to be able to be displaced in the in-plane direction (direction parallel to the first surface 30 and the second surface 32) and the lateral direction (X direction).

With this configuration, in the embodiment of FIG. 1, the first support plate 18 and the second support plate 22 are in a direction (Z direction) orthogonal to the above-described relative displacement direction between the first substrate 12 and the second substrate 14. Will be arranged side by side. Further, the extension portion 20b (first surface 30) of the first connecting plate 20 and the second connecting plate 24 (second surface 32) are disposed in the above-described relative displacement direction of the first substrate 12 and the second substrate 14 ( They will be arranged side by side in the (X direction). In the present application, the “lateral direction” indicating the direction of relative displacement between the first substrate 12 and the second substrate 14 means that one side is the other side when the first support plate 18 and the second support plate 22 face each other. On the other hand, it means a direction in which a lateral displacement occurs, which is different from the displacement direction in which the first support plate 18 and the second support plate 22 approach or separate from each other.

The holding plate 16 can have a plate shape such as a general steel plate, and can be formed from a material such as metal having desired rigidity. The holding plate 16 has a flat holding surface 34 that faces the first surface 30 of the first substrate 12 and the second surface 32 of the second substrate 14. Although the retaining surface 34 is not visible in FIG. 1, the outwardly facing surface 36 on the opposite side of the retaining surface 34 can be seen, the retaining surface 34 having the same contour as the surface 36. In the embodiment of FIG. 1, the holding plate 16 has a shape arranged to overlap the extension portion 20 b of the first connecting plate 20 and the second connecting plate 24, and substantially covers the first surface 30. It integrally has a first holding portion 16a and a second holding portion 16b that substantially covers the second surface 32.

The vibration damping device 10 includes a viscoelastic material 38 sandwiched between the first surface 30 of the first substrate 12 and the holding surface 34 of the holding plate 16 and a second surface of the second substrate 14 as a vibration energy absorbing material. The friction material 40 is sandwiched between 32 and the holding surface 34 of the holding plate 16. The viscoelastic material 38 and the friction material 40 are arranged on one side in the relative displacement direction (X direction) of the first substrate 12 and the second substrate 14 with respect to each other.

The viscoelastic material 38 has a thin plate-like shape interposed between the first surface 30 and the holding surface 34. When vibration occurs in the structure in which the vibration damping device 10 is installed, the viscoelastic material 38 itself undergoes shear deformation in the in-plane direction to generate intermolecular friction, thereby converting vibration energy into heat energy, Therefore, the vibration energy is absorbed. The viscoelastic material 38 can have a surface area and a thickness according to the required vibration damping performance. For example, an acrylic polymer (for example, a copolymer of poly(meth)acrylate, acrylic acid, acrylamide, etc.), a urethane-based material. Polymers (for example, polyether urethane, polyester urethane, etc.), olefin polymers, silicone polymers (for example, methyl vinyl silicone), vinyl chloride polymers, butane rubber, butyl rubber and the like can be used.

The friction material 40 has a thin plate shape interposed between the second surface 32 and the holding surface 34. When vibration occurs in the structure in which the vibration damping device 10 is installed, the friction material 40 mainly slides on the second surface 32 to generate friction resistance, thereby converting the vibration energy into heat energy. Absorb vibration energy. The friction material 40 can have a surface area corresponding to the required vibration damping performance. For example, a thermosetting resin as a binder, a fiber material such as aramid fiber, glass fiber, vinylon fiber, or cashew dust can be used. It can be manufactured from a material such as a friction modifier and a filler such as barium sulfate added.

The viscoelastic material 38 is fixed to the first surface 30 and the holding surface 34 by the adhesive force of itself. Therefore, the holding plate 16 is attached to the first substrate 12 (first connecting plate 20) by the adhesive force of the viscoelastic material 38. In this state, the holding plate 16 can move with respect to the first substrate 12 (first connecting plate 20) within the viscoelastic range of the viscoelastic material 38.

The holding plate 16 further uses a bolt (that is, a fastening member) 42 in a state where the viscoelastic material 38 is sandwiched between the holding surface 34 and the first surface 30, and the first substrate 12 (first connecting plate 20). Attached to. For simplification, FIG. 1 shows two bolts 42 of the plurality of bolts 42 for attaching the first holding portion 16 a of the holding plate 16 to the first connecting plate 20. A plurality of elongated holes 44 through which the bolts 42 are inserted are formed in the first substrate 12 (first connecting plate 20). Although not shown, the second substrate 14 (second support plate 22) has a plurality of holes (larger than the elongated holes 44) into which the bolts 42 are inserted at positions corresponding to the elongated holes 44 of the first substrate 12, respectively. An opening) is formed. The plurality of long holes 44 are formed with their long axes directed toward the above-described relative displacement direction (X direction) between the first substrate 12 and the second substrate 14.

Each bolt 42 penetrates a hole 46 of the holding plate 16, a long hole 44 of the first substrate 12 (first connecting plate 20), and a hole (not shown) of the second substrate 14 (second support plate 22). Then, the back side of the second substrate 14 is screwed into a nut (not shown). In this state, the holding plate 16 is set to the first substrate 12 (first connecting plate 20) with respect to the first substrate 12 (first connecting plate 20) at the limit of the position where each bolt 42 engages with the edge of the corresponding long hole 44 in the long axis direction. The substrate 12 and the second substrate 14 can reciprocate in the above-described relative displacement direction (X direction). While the holding plate 16 moves in the X direction with respect to the first substrate 12 (first connecting plate 20), the viscoelastic material 38 exerts a force on the viscoelastic material 38 itself to prevent this movement. By setting the dimension of the long hole 44 in the long axis direction so that the shear deformation of the viscoelastic material 38 when the holding plate 16 moves in the X direction with respect to the first substrate 12 falls within the viscoelastic range, It is possible to prevent plastic deformation (that is, deformation that does not fall within the viscoelastic range) or breakage of the viscoelastic material 38.

In the embodiment shown in FIG. 1, three viscoelastic members 38 having different sizes are sandwiched between the first surface 30 and the holding surface 34 at a position where interference with the bolt 42 is avoided. However, the present invention is not limited to this, and a single large-sized viscoelastic material 38 having a shape capable of avoiding interference with the bolt 42 may be sandwiched between the first surface 30 and the holding surface 34. ..

The holding plate 16 is further attached to the second substrate 14 (second connecting plate 24) using bolts (that is, fastening members) 48 with the friction material 40 being sandwiched between the holding surface 34 and the second surface 32. It is attached. For simplification, FIG. 1 shows two bolts 48 of the plurality of bolts 48 for attaching the second holding portion 16 b of the holding plate 16 to the second connecting plate 24. A plurality of elongated holes 50 through which the bolts 48 are inserted are formed in the second substrate 14 (second connecting plate 24). Although not shown, the second substrate 14 (second support plate 22) has a plurality of holes (the same shape as the elongated holes 50 or the elongated holes 50) through which the bolts 48 are inserted at positions corresponding to the elongated holes 50. A large opening) is formed. The plurality of long holes 50 are formed with their long axes oriented in the above-described relative displacement direction (X direction) between the first substrate 12 and the second substrate 14.

A plurality of holes 52 through which the bolts 48 are inserted are formed in the friction material 40. The friction material 40 engages the bolts 48 passing through the individual holes 52 at the edges of the holes 52. Each bolt 48 has a hole 54 in the holding plate 16, a hole 52 in the friction material 40, an elongated hole 50 in the second substrate 14 (second connecting plate 24), and a hole in the second substrate 14 (second support plate 22) ( (Not shown), and is screwed into a nut (not shown) on the back side of the second substrate 14. In this state, the holding plate 16 can reciprocate in the above-described relative displacement direction (X direction) between the first substrate 12 and the second substrate 14 with respect to the second substrate 14 (second connecting plate 24). The maximum movement distance of the holding plate 16 with respect to the second substrate 14 can be set as a movement limit at the position where each bolt 48 engages with the edge of the corresponding elongated hole 50 in the long axis direction.

With the relative displacement of the first substrate 12 and the second substrate 14 in the X direction, the extension portion 20b of the first connecting plate 20 and the second connecting plate 24 are displaced in a direction toward or away from each other. In the initial state where the viscoelastic material 38 is not sheared and deformed, as shown in FIG. 1, a gap having a predetermined X-direction dimension is formed between the extended portion 20b of the first connecting plate 20 and the second connecting plate 24. To be done. Further, in this initial state, each of the plurality of bolts 42 for attaching the holding plate 16 to the first connecting plate 20 is located substantially in the center of the corresponding long hole 44 of the first connecting plate 20 in the longitudinal direction, and Each of the plurality of bolts 48 attached to the second connecting plate 24 is located substantially in the center of the corresponding elongated hole 50 of the second connecting plate 24 in the long axis direction. In this configuration, the size of the gap between the extended portion 20b of the first connecting plate 20 and the second connecting plate 24 in the initial state is one in the longitudinal direction of the elongated hole 44 corresponding to each bolt 42 from the initial state. Of the movement of the holding plate 16 with respect to the first substrate 12 until it engages with the end edge of the first substrate 12, and from the initial state until each bolt 48 engages with one end of the corresponding slot 50 in the longitudinal direction. Can be set smaller than the total of the moving distance of the holding plate 16 with respect to the second substrate 14. According to such dimension settings, when the first substrate 12 and the second substrate 14 are relatively displaced in the direction in which the extension portion 20b of the first connecting plate 20 and the second connecting plate 24 approach each other, Since the extended portion 20b of the first connecting plate 20 and the second connecting plate 24 come into contact with each other before the bolts 42, 48 engage with the longitudinal ends of the corresponding elongated holes 44, 50, the bolts 42, 48 contact each other. It is possible to prevent possible damage to the bolts 42, 48 and the first connecting plate 20 and the second connecting plate 24 due to stress concentration on the outer surfaces of the 42, 48 and the edges of the elongated holes 44, 50. However, the present invention is not limited to this, and the X-direction dimension of the above-described gap is set to be the same as the total moving distance of the holding plate 16 described above, or set to be larger than the total moving distance of the holding plate 16 described above. You can also

In the vibration damping device 10, the friction material 40, the holding plate 16 and the first friction member 40 and the holding surface 34 are arranged so that the friction coefficient between the friction material 40 and the holding surface 34 becomes larger than the friction coefficient between the friction material 40 and the second surface 32. The material and surface structure of the second substrate 14 (second connecting plate 24) are set. As a result, in the state where the holding plate 16 is pressed against the second base plate 14 (second connecting plate 24) by an appropriate force by tightening the bolt 48, the friction material 40 remains engaged with the bolt 48 and the holding plate 16 is held. It is possible to move the first substrate 12 and the second substrate 14 integrally with the second substrate 14 (the second connecting plate 24) in the direction of the relative displacement (X direction) described above. While the friction material 40 moves in the X direction integrally with the holding plate 16, a dynamic frictional force that tends to prevent this movement is generated on the second surface 32.

In the embodiment of FIG. 1, six friction members 40, each of which engages with one bolt 48, are sandwiched between the second surface 32 and the holding surface 34. However, the present invention is not limited to this, and a desired number of friction members 40 that engage with the plurality of bolts 48 may be sandwiched between the second surface 32 and the holding surface 34.

When vibration occurs in a structure of a building with a pair of beams and a pair of columns, the left and right columns are displaced in synchronization with each other so that they tilt in the same direction, and the upper and lower beams are displaced so as to be displaced from each other in the longitudinal direction. To do. The left and right columns are displaced so as to be displaced from each other in the longitudinal direction as the tilt occurs. The vibration damping device 10 is oriented such that the relative displacement direction (X direction) of the first substrate 12 and the second substrate 14 described above matches the longitudinal direction of the pair of beams or the longitudinal direction of the pair of columns. Installed in the structure. With such an installation method, the vibration damping device 10 becomes a wall type or a stud type that is installed between a pair of beams or between a pair of columns.

When the first and second frame members are upper and lower beams, when the beams cause relative displacement in the longitudinal direction due to vibration, the first substrate 12 and the second substrate 14 are separated from each other by the bolts 42. , 48 and the corresponding elongated holes 44, 50 are displaced relative to each other in a substantially horizontal direction corresponding to the above-described relative displacement direction (X direction). Further, when the first and second frame members are left and right columns, when the columns cause relative displacement in the longitudinal direction due to vibration, the first substrate 12 and the second substrate 14 are separated from each other. Under the mutual guiding action of the bolts 42, 48 and the corresponding elongated holes 44, 50, the bolts 42, 48 are displaced in a substantially vertical direction corresponding to the above-described relative displacement direction (X direction).

When the magnitude and speed of the external force applied to the first substrate 12 and the second substrate 14 in the relative displacement direction by vibration are relatively small, the holding plate is generated by the static friction force between the friction material 40 and the second surface 32. 16 moves in the X direction relative to the first substrate 12 integrally with the second substrate 14 via the friction material 40 (that is, the first substrate 12 moves in the opposite X direction with respect to the second substrate 14 and the holding plate 16). ). Along with this, the viscoelastic material 38 sandwiched between the holding surface 34 and the first surface 30 undergoes shear deformation to convert the vibration energy into heat energy, and absorbs the vibration energy, thereby exerting a damping effect.

The magnitude and speed of the external force applied to the first substrate 12 and the second substrate 14 in the direction of relative displacement due to the vibration increase, and the force for moving the holding plate 16 with respect to the second substrate 14 becomes the friction material 40. When the maximum static frictional force between the second surface 32 and the second surface 32 is exceeded, the holding plate 16 causes the viscoelastic material 38 to shear and deform, and the frictional material 40 and the first substrate 12 are integrated with the second substrate 14. It moves in the X direction (that is, the second substrate 14 moves in the X direction with respect to the first substrate 12 and the holding plate 16). Along with this, the friction material 40 produces a dynamic frictional force with respect to the second surface 32 to convert the vibration energy into heat energy and absorb the vibration energy, thereby exhibiting a damping effect.

Note that, while the friction material 40 exerts the vibration damping action, the viscoelastic material 38 generally further advances the shear deformation to continue the vibration damping action. The bolts 42 and the elongated holes 44 also function as stoppers that prevent the viscoelastic material 38 from continuously undergoing shear deformation and leading to plastic deformation or fracture.

As described above, since the vibration damping device 10 has a composite type structure using the viscoelastic material 38 and the friction material 40 as the vibration energy absorbing material, it can exhibit an excellent vibration damping action regardless of the magnitude of vibration. You can Further, in the vibration damping device 10, since the first substrate 12 and the second substrate 14 are displaced in the in-plane direction and the lateral direction with respect to each other, the structure of the building including the pair of frame members is added to the wall type or the stud type. The vibration damping device 10 can be installed. In general, the wall-type or stud-type vibration damping device 10 makes it easier to provide an opening in the outer wall of a building in which the vibration damping device is built, as compared with a brace-type vibration damping device that is obliquely arranged in the structure. There are advantages. Moreover, in the vibration damping device 10, since the viscoelastic material 38 and the friction material 40 are arranged on one side in the relative displacement direction of the first substrate 12 and the second substrate 14 with respect to each other, damping in the direction of this relative displacement is performed. The external dimensions of the vibration damping device 10 can be reduced, and thus the space occupied when the vibration damping device 10 is installed in a structure can be reduced. If the space occupied by the vibration damping device 10 can be reduced, it becomes easier to provide an opening of a desired shape and size on the outer wall of the building in which the vibration damping device 10 is built.

Further, in the vibration damping device 10, since the viscoelastic material 38 and the friction material 40 are arranged side by side in the direction of relative displacement between the first substrate 12 and the second substrate 14, the viscoelastic material 38 and the friction material 40 are arranged. As described above, generation of a moment when the damping operation is performed according to the respective characteristics is avoided, and the bending moment generated between the viscoelastic material 38 and the friction material 40 in the first substrate 12, the second substrate 14, and the holding plate 16 is avoided. Is reduced. In the vibration damping device 10, if the generation of the moment during the vibration damping operation is avoided, the desired vibration damping performance can always be exhibited, and if the bending moment generated in the component is reduced, the durability of the component increases. As a result, the reliability and reproducibility of the vibration damping performance of the vibration damping device 10 are improved. On the other hand, for example, in the wall-type seismic damper described in Patent Document 2 (JP 2007-247278 A), the sliding mechanism is arranged in the vicinity of the upper girder, and the first sliding mechanism is arranged below the sliding mechanism. Since the viscoelastic body and the second viscoelastic body are arranged, a moment is generated when the sliding mechanism and the viscoelastic body perform damping operation according to their respective characteristics, and a component between the sliding mechanism and the viscoelastic body is generated. Bending moment is increased.

Further, the vibration damping device 10 includes the viscoelastic material 38 and the second surface 32, which face the same side, and the viscoelastic material 38 and the holding surface 34, which face the first surface 30 and the second surface 32. Since the friction material 40 is sandwiched, the thinning of the entire device can be promoted. Moreover, since the holding plate 16 having the holding surface 34 can be disposed outside the viscoelastic material 38 and the friction material 40 in the thickness direction of the vibration damping device 10, the viscoelastic material 38 and the friction material 38 are further provided outside the holding plate 16. It is easy to add and arrange the material 40. Therefore, in the vibration damping device 10, the surface area of the vibration energy absorbing material can be easily increased or decreased according to the required vibration damping performance. On the other hand, for example, in the stud type damping device described in Patent Document 1 (JP 2009-228834 A), the viscoelastic damper and the friction damper are provided on different surfaces of the third plate member. Therefore, the thickness of the entire device tends to increase, and it is difficult to additionally arrange the viscoelastic damper and the friction damper outside the third plate member.

In the vibration damping device 10, the first connecting plate 20, the second connecting plate 24, the holding plate 16 and the viscoelastic material are also provided on the back sides of the first and second supporting plates 18 and 22 (the side opposite to the side shown in FIG. 1). 38 and the friction material 40 can be arranged in the above-mentioned mutual relation. By installing the same vibration damping structure on both the front and back sides of the first and second support plates 18 and 22, it is possible to avoid generation of a moment in the vibration damping device 10 itself during the vibration damping operation.

2 to 7 show a vibration damping device 60 according to another embodiment. The vibration damping device 60 has a basic configuration corresponding to the configuration of the vibration damping device 10 of FIG. 1, and a viscoelastic material 38 and a friction material 40 are added to the outside of the holding plate 16 of the vibration damping device 10. It was arranged. Among the constituent elements of the vibration damping device 60, those corresponding to the constituent elements of the vibration damping device 10 are designated by common reference numerals, and detailed description thereof will be omitted. 2 to 7, the plurality of bolts 26, 28, 42, 48 used for assembling the components of the apparatus are omitted as appropriate for simplification.

As shown in FIG. 2 (perspective view) and FIG. 3 (exploded perspective view), the vibration damping device 60 includes a first substrate 12 having a first surface 30, a second substrate 14 having a second surface 32, and a holding member. The holding plate 16 having the surface 34, the viscoelastic material 38 sandwiched between the first surface 30 and the retaining surface 34, and the friction material 40 sandwiched between the second surface 32 and the retaining surface 34. Prepare The first substrate 12 includes a first supporting plate 18 and a first connecting plate 20, and the second substrate 14 includes a second supporting plate 22 and a second connecting plate 24. Note that FIG. 2 shows a plurality of fixing plates M for erection that connect the first substrate 12 (first support plate 18) and the second substrate 14 (second support plate 22) to each other so that they cannot move. There is. These fixing plates M are removed after the vibration damping device 60 is installed in the structure of the building.

The vibration damping device 60 includes a plurality of composite damper layers 62 (FIG. 3) including the first connecting plate 20, the second connecting plate 24, the holding plate 16, the viscoelastic material 38, and the friction material 40. Each of the individual composite damper layers 62 has substantially the same configuration and exhibits substantially the same vibration damping effect. The first composite damper layer 62 corresponds to the first connecting plate 20, the second connecting plate 24, the holding plate 16, the viscoelastic material 38, and the friction material 40 of the vibration damping device 10 of FIG. 1, respectively. The second connecting plate 24, the holding plate 16, the viscoelastic material 38, and the friction material 40. Similarly, the second composite damper layer 62 includes the first connecting plate 20, the second connecting plate 24, the holding plate 16, the viscoelastic material 38, and the friction material 40. The second composite damper layer 62 is placed outside the first composite damper layer 62 in a state where the first connecting plate 20 and the second connecting plate 24 are superposed on the holding plate 16 of the first composite damper layer 62. Is located in. Hereinafter, in the description with reference to FIG. 3, for identification, the second composite damper layer 62 and its constituent elements are denoted by “B” at the end of the reference numeral.

As shown in FIG. 3, the second connecting plate 24B, the holding plate 16B, the viscoelastic material 38B, and the friction material 40B of the second composite damper layer 62B are respectively the second connecting plate 24 of the first composite damper layer 62, The holding plate 16, the viscoelastic material 38, and the friction material 40 have substantially the same outer shape. The outer shape of the connecting portion 20aB of the first connecting plate 20B of the second composite damper layer 62B is slightly different from the outer shape of the connecting portion 20a of the first connecting plate 20 of the first composite damper layer 62, while the extending portion 20bB. The outer shape of is substantially the same as the outer shape of the extension portion 20b of the first connecting plate 20.

The first connecting plate 20B is arranged so as to overlap the first holding portion 16a of the holding plate 16 in a posture in which the contour of the extending portion 20bB is registered with the contour of the extending portion 20b of the first connecting plate 20, and the plurality of bolts 26 Is fixed to the first supporting plate 18 together with the first connecting plate 20. The first connecting plates 20 and 20B have a shape protruding outside the first holding portion 16a of the holding plate 16 at the connecting portions 20a and 20aB, and the spacer 64 (see FIG. 2) is provided between the connecting portions 20a and 20aB. ) Can be interposed. The configuration of the first substrate 12 is not limited to this configuration, and the first support plate 18 and the first connecting plates 20 and 20B may be integrally formed of the same material or may be formed of different materials and integrated by welding or the like. It may be the one.

The second connecting plate 24</b>B is arranged so as to overlap the second holding portion 16 b of the holding plate 16 in a posture in which the contour is registered with the contour of the second connecting plate 24, and the second connecting plate 24</b>B is connected by using the plurality of bolts 28. It is fixed to the second support plate 22 together with the plate 24. The second connecting plates 24, 24B have a shape protruding to the outside of the second holding portion 16b of the holding plate 16 at the bolt fastening portions at both ends in the longitudinal direction (Z direction in the drawing), and between the bolt fastening portions. A spacer 66 (FIG. 3) can be interposed between the two. The configuration of the second substrate 14 is not limited to this configuration, and the second support plate 22 and the second connecting plates 24 and 24B may be integrally formed of the same material or may be formed of different materials and integrated by welding or the like. It may be the one.

The holding plate 16B is arranged so as to overlap the first connecting plate 20B and the second connecting plate 24B in a posture in which its contour is registered with the contour of the holding plate 16. The holding plate 16B is attached to the first connecting plate 20B by the adhesive force of the viscoelastic material 38B.

The holding plate 16B is further attached to the first connecting plate 20B using a plurality of bolts (that is, fastening members) 42 with the viscoelastic material 38B being sandwiched between the holding surface 34B and the first surface 30B. Further, it is attached to the first connecting plate 20 together with the holding plate 16. Each bolt 42 has a hole 46B in the holding plate 16B, a long hole 44B in the first connecting plate 20B, a hole 46 in the holding plate 16, a long hole 44 in the first connecting plate 20, and a hole in the second supporting plate 22 (not shown). (Not shown), and is screwed into a nut (not shown) on the back side of the second substrate 14. In this state, the holding plate 16B is integrated with the holding plate 16 with respect to the first connecting plate 20B with the limit of the position where the individual bolts 42 engage with the end edges of the corresponding long holes 44B in the long axis direction. The first substrate 12 and the second substrate 14 can be moved in the above-described relative displacement direction (X direction). While the holding plate 16B moves in the X direction with respect to the first connecting plate 20B, the viscoelastic material 38B exerts a force on the viscoelastic material 38B itself to prevent this movement.

The holding plate 16B is further attached to the second connecting plate 24B using a plurality of bolts (that is, fastening members) 48 with the friction material 40B being sandwiched between the holding surface 34B and the second surface 32B, and It is attached to the second connecting plate 24 together with the holding plate 16. Each bolt 48 has a hole 54B in the holding plate 16B, a hole 52B in the friction material 40B, an elongated hole 50B in the second connecting plate 24B, a hole 54 in the holding plate 16, a hole 52 in the friction material 40, and a length in the second connecting plate 24. It penetrates through the hole 50 and the hole (not shown) of the second support plate 22, and is screwed into a nut (not shown) on the back side of the second substrate 14. In this state, the holding plate 16B can move integrally with the holding plate 16 in the above-described relative displacement direction (X direction) between the first substrate 12 and the second substrate 14 with respect to the second connecting plate 24B. The friction member 40B can move in the X direction with respect to the second connecting plate 24B integrally with the holding plate 16B while being engaged with the bolt 48, and during this movement, the dynamic friction force that tries to prevent the movement is applied to the second surface. Occurs for 32B.

The vibration damping device 60 includes a viscoelastic material 68 sandwiched between the holding plate 16 of the first composite damper layer 62 and the first connecting plate 20B of the second composite damper layer 62B as an additional vibration energy absorbing material. And a friction material 70 sandwiched between the holding plate 16 of the first composite damper layer 62 and the second connecting plate 24B of the second composite damper layer 62B. The viscoelastic material 68 and the friction material 70 are arranged at positions corresponding to the viscoelastic materials 38 and 38B and the friction materials 40 and 40B of the composite damper layers 62 and 62B, respectively. Therefore, the viscoelastic material 68 and the friction material 70 are arranged on one side in the above-described relative displacement direction (X direction) between the first substrate 12 and the second substrate 14 with respect to each other.

The viscoelastic material 68 has substantially the same structure as the viscoelastic materials 38 and 38B of the composite damper layers 62 and 62B. That is, the viscoelastic material 68 is fixed to the surface 36 of the holding plate 16 and the back surface 72B of the first connecting plate 20B (the surface opposite to the first surface 30B) by the adhesive force of itself. In this state, the holding plate 16 can move in the viscoelastic range of the viscoelastic material 68 in the above-described relative displacement direction (X direction) of the first substrate 12 and the second substrate 14 with respect to the first connecting plate 20B. .. While the holding plate 16 moves in the X direction with respect to the first connecting plate 20B, the viscoelastic material 68 exerts a force on the viscoelastic material 68 itself to prevent this movement.

The friction material 70 has substantially the same structure as the friction materials 40 and 40B of the composite damper layers 62 and 62B. That is, the friction material 70 has a hole 74 through which the bolt 48 is inserted, and engages with the bolt 48 at the edge of the hole 74. Further, the friction coefficient between the friction material 70 and the surface 36 of the holding plate 16 is greater than the friction coefficient between the friction material 70 and the back surface 76B of the second connecting plate 24B (the surface opposite to the second surface 32B). The materials and surface structures of the friction material 70, the holding plate 16 and the second connecting plate 24B are set so as to be large. The friction material 70 can move in the X direction with respect to the second connecting plate 24B integrally with the holding plate 16 while being engaged with the bolt 48, and during this movement, the dynamic friction force that tries to prevent the movement is secondly connected. It occurs on the back surface 76B of the plate 24B.

4 to 7 are cross-sectional views of various portions of the vibration damping device 60. As shown in FIGS. 4-7, both the first support plate 18 of the first substrate 12 and the second support plate 22 of the second substrate 14 have a front side 78 and a back side 80 that are opposite to each other (FIGS. 2 and 5). 3 shows the structure of the front side 78 in each case.). In the vibration damping device 60, two sets of composite damper layers 62 are installed on the front side 78 and the back side 80 of the first and second support plates 18 and 22, respectively. Thus, the vibration damping device 60 includes a total of four sets of composite damper layers 62, and thus a total of six layers of vibration energy including the viscoelastic material 38 and the friction material 40 or the viscoelastic material 68 and the friction material 70, respectively. It has an absorption layer.

Here, the terms "front side" and "back side" are for convenience, and "front side" and "back side" have no particular meaning. In the vibration damping device 60, the two sets of composite damper layers 62 on the back side 80 have the same configuration as the two sets of composite damper layers 62 on the front side 78 (the composite damper layers 62 and 62B shown in FIG. 3).

The outermost holding plate 16 of the two sets of composite damper layers 62 installed on the front side 78 of the first and second support plates 18, 22 and the back side 80 of the first and second support plates 18, 22. The outermost holding plates 16 of the two sets of composite damper layers 62 are fixedly fastened to each other by a plurality of bolts 42 and 48. FIGS. 4 and 7 show nuts 82 screwed on the individual bolts 42, and FIGS. 5 and 7 show nuts 84 screwed on the individual bolts 48. When the viscoelastic materials 38, 68 and the friction materials 40, 70 perform damping operation according to their respective characteristics as will be described later, the bolt 42 and the nut 82 cause the holding plate 16 of each composite damper layer 62 to move outward due to internal stress. It acts to prevent floating deformation. On the other hand, the bolts 48 and the nuts 84, when the viscoelastic materials 38, 68 and the friction materials 40, 70 perform damping operation according to their respective characteristics, as will be described later, cause the friction materials 40, 70 to consume a static friction force and wear. A pressing force for exerting a dynamic friction force is applied to the friction members 40 and 70. 5 and 7 show a disc spring 86 for reliably applying a pressing force to the friction members 40 and 70 as the bolt 48 is tightened.

The vibration damping device 60 is installed between the pair of beams or the pair of columns of the structure of the building in the same manner as the vibration damping device 10 described above, and in that state, is similar to the vibration damping device 10 described above. Exhibits damping effect. Hereinafter, the damping action of the damping device 60 will be described with reference to FIG. 7 and FIGS. 8A and 8B showing cross sections corresponding to FIG. 7.

The vibration damping device 60 is installed in the structure in the initial state of FIG. 7 in which the viscoelastic materials 38 and 68 are not sheared and deformed. In this initial state, each of the plurality of bolts 42 for attaching the holding plate 16 to the first connecting plate 20 is located substantially at the center of the corresponding long hole 44 of the first connecting plate 20 in the longitudinal direction, and the holding plate 16 is attached to the first connecting plate 20. Each of the plurality of bolts 48 attached to the second connecting plate 24 is located substantially at the center of the corresponding elongated hole 50 of the second connecting plate 24 in the long axis direction. When the first and second frame members undergo relative displacement in the longitudinal direction due to vibration, as shown in FIGS. 8A and 8B, the first substrate 12 (the first support plate 18 and the four first plates). The connection plate 20) and the second substrate 14 (the second support plate 22 and the four second connection plates 24) are provided under the mutual guiding action of the individual bolts 42, 48 and the corresponding elongated holes 44, 50. , And is relatively displaced in the in-plane direction and the lateral direction (X direction in the figure). Note that FIGS. 7, 8A, and 8B show holes 88 and 90 provided in the second support plate 22 at positions corresponding to the elongated holes 44 and 50.

When the magnitude and speed of the external force applied to the first substrate 12 and the second substrate 14 in the direction of relative displacement by vibration are relatively small, as shown in FIG. 8A, between the friction material 40 and the second surface 32, and Due to the static frictional force between the friction material 70 and the back surface 76, each holding plate 16 is integrated with the second substrate 14 via the friction materials 40 and 70 in the X direction (in the example shown in the drawing) with respect to the first substrate 12. To the right) (that is, the first substrate 12 moves to the opposite X direction (left in the illustrated example) with respect to the second substrate 14 and the holding plate 16). Along with that, the individual viscoelastic materials 38 sandwiched between the holding surface 34 and the first surface 30 and the individual viscoelastic materials 68 sandwiched between the surface 36 and the back surface 72 are respectively shear-deformed. By converting the vibration energy into heat energy and absorbing the vibration energy, it exerts a damping effect. The relative displacement amount between the first substrate 12 and the second substrate 14 while the viscoelastic materials 38 and 68 only exert the vibration damping effect in this manner is usually relatively small as shown in FIG. 8A. ..

The magnitude and speed of the external force applied to the first substrate 12 and the second substrate 14 in the direction of relative displacement due to the vibration increase, and the force for moving the holding plate 16 with respect to the second substrate 14 becomes the friction material 40. When the maximum static friction force between the second surface 32 and between the friction material 70 and the back surface 76 is exceeded, the individual holding plates 16 cause the viscoelastic materials 38 and 68 to shear and deform, as shown in FIG. 8B. Meanwhile, the friction materials 40, 70 and the first substrate 12 move integrally with the second substrate 14 in the reverse X direction (left direction in the illustrated example) (that is, the second substrate 14 is the first substrate 12 and the holding plate). 16 moves in the X direction (to the right in the illustrated example). Accordingly, the friction material 40 and the friction material 70 generate dynamic frictional forces on the corresponding second surface 32 and back surface 76, respectively, to convert vibration energy into heat energy and absorb the vibration energy. Exert an effect.

Note that, while the friction materials 40 and 70 exhibit the vibration damping action, it is general that the viscoelastic materials 38 and 68 further undergo shear deformation to continue the vibration damping action. The bolts 42 and the elongated holes 44 also function as stoppers that prevent the viscoelastic material 38 from continuously undergoing shear deformation and leading to plastic deformation or fracture.

The vibration damping device 60 having the above configuration has the same effects as the above-described effects of the vibration damping device 10 of FIG. In particular, since the vibration damping device 60 includes a plurality (4 sets) of composite damper layers 62 stacked in the thickness direction, each of them includes the viscoelastic material 38 and the friction material 40 or the viscoelastic material 68 and the friction material 70. Due to the synergistic effect of a plurality of (6 layers) vibration energy absorption layers, it has excellent vibration damping performance while maintaining a configuration capable of reducing the occupied space. The number of the composite damper layers 62 can be variously set according to the required vibration damping performance, and one set or three or more sets may be provided on each of the front side 78 and the back side 80 of the first and second support plates 18 and 22. A composite damper layer 62 can also be installed. The number of the composite damper layers 62 can be easily increased or decreased by attaching or detaching the plurality of bolts 26, 28, 42, 48.

9 to 11 respectively show a vibration damping device 60 according to a modification in which the number of layers of the vibration energy absorbing layer including the viscoelastic material 38 and the friction material 40 or the viscoelastic material 68 and the friction material 70 is variously changed. The modification shown in FIG. 9 has a configuration in which three sets (six sets in total) of composite damper layers 62 are installed on each of the front side 78 and the back side 80 of the first and second support plates 18 and 22. As described above, the viscoelastic material 68 and the friction material 70 are provided between the composite damper layers 62 adjacent to each other in the thickness direction. The vibration damping device 60 according to the modified example of FIG. 9 includes a total of 10 vibration energy absorption layers each including the viscoelastic material 38 and the friction material 40 or the viscoelastic material 68 and the friction material 70.

In the modified example shown in FIG. 10, one set (two sets in total) of composite damper layers 62 is installed on each of the front side 78 and the back side 80 of the first and second support plates 18 and 22, and the composite damper layers 62 are It has a configuration in which the viscoelastic material 68, the friction material 70, the first connecting plate 20, and the second connecting plate 24 are installed outside the holding plate 16. This configuration substantially corresponds to the configuration in which the holding plate 16, the viscoelastic material 38, and the friction material 40 in the second composite damper layer 62 of the vibration damping device 60 shown in FIGS. 2 to 7 are omitted. The vibration damping device 60 according to the modified example of FIG. 10 includes a total of four layers of vibration energy absorption layers each including the viscoelastic material 38 and the friction material 40 or the viscoelastic material 68 and the friction material 70.

In the modification shown in FIG. 11, two sets (four sets in total) of composite damper layers 62 are installed on each of the front side 78 and the back side 80 of the first and second support plates 18 and 22, and the composite damper layers 62 are It has a configuration in which the viscoelastic material 68, the friction material 70, the first connecting plate 20, and the second connecting plate 24 are installed outside the holding plate 16. In this configuration, the viscoelastic material 68 and the friction material 70, the first connecting plate 20 and the second connecting plate 24 are added to the outside of the second composite damper layer 62 of the vibration damping device 60 shown in FIGS. 2 to 7. It substantially corresponds to the above configuration. The vibration damping device 60 according to the modified example of FIG. 11 includes a total of eight vibration energy absorption layers each including the viscoelastic material 38 and the friction material 40 or the viscoelastic material 68 and the friction material 70.

Here, in the modified examples of FIGS. 10 and 11, the second connecting plates 24 on both front and back sides arranged on the outermost side in the thickness direction in a state where pressing force is applied to the friction members 40 and 70 by tightening the bolts 48. Is fixed, the elongated hole 50 through which the bolt 48 is inserted is formed in the holding plate 16 instead of the second connecting plate 24. Further, the friction coefficient between the friction material 40 and the holding surface 34 of the holding plate 16 becomes smaller than the friction coefficient between the friction material 40 and the second surface 32 of the second connecting plate 24, and the friction material 70 and The friction material 40, the friction material 70, the holding plate 16, The material and surface structure of the second connecting plate 24 are set. As a result, in the modified examples of FIGS. 10 and 11, the friction members 40 and 70 remain engaged with the bolt 48 while the second connecting plate 24 is pressed toward the holding plate 16 by tightening the bolt 48. The second connecting plate 24 and the holding plate 16 can be moved integrally with each other in the direction of the relative displacement of the first substrate 12 and the second substrate 14 described above. While the friction materials 40 and 70 move integrally with the second connecting plate 24, a dynamic frictional force that tries to prevent this movement is generated on the holding plate 16. With this configuration, the elongated hole 44 through which the bolt 42 is inserted is also formed in the holding plate 16 instead of the first connecting plate 20.

FIG. 12 illustrates a building damping structure 100 according to one embodiment. The vibration damping structure 100 includes a pair of upper and lower beams (first and second frame members) 102 and 104 which are spaced apart from each other, and the vibration damping device 10 or the vibration damping device 60 described above. It The first substrate 12 of the vibration damping device 10 (60) is attached to the upper beam (first frame member) 102 using the bracket 106, and the second substrate 14 of the vibration damping device 10 (60) is mounted on the bracket 108. Is attached to the lower beam (second frame member) 104 using. The first substrate 12 and the second substrate 14 are oriented so that the relative displacement direction (X direction) between them matches the longitudinal direction of the beams 102, 104.

The structure 110 having the beams 102 and 104 further includes a pair of left and right columns 112 and 114 to form a rectangular frame for a single layer of a building. When vibration is generated in the structure 110 and the upper and lower beams 102 and 104 are repeatedly displaced relative to each other in the longitudinal direction, the first substrate 12 and the second substrate 14 of the vibration damping device 10 (60) move relative to each other. It is repeatedly displaced in the substantially horizontal direction corresponding to the direction of displacement (X direction). During this time, the vibration damping device 10 (60) exerts a vibration damping action by vibrating the viscoelastic material 38 (38 and 68) and the friction material 40 (40 and 70) according to their respective characteristics as described above. The vibration of the structure 110 is suppressed.

FIG. 13 shows a building damping structure 120 according to another embodiment. The vibration damping structure 120 is configured to include a pair of left and right columns (first and second frame members) 122 and 124 that are arranged at a distance from each other, and the vibration damping device 10 or the vibration damping device 60 described above. It The first board 12 of the vibration damping device 10 (60) is attached to the right column (second frame member) 124 using the bracket 126, and the second board 14 of the vibration damping device 10 (60) is mounted on the bracket 128. Is attached to the left column (first frame member) 122 using. The first substrate 12 and the second substrate 14 are oriented so that the relative displacement direction (X direction) between them matches the longitudinal direction of the columns 122 and 124.

When vibration is generated in the structure 130 having the columns 122 and 124 and the left and right columns 122 and 124 repeatedly generate relative displacement in the longitudinal direction, the first substrate 12 and the second substrate of the vibration damping device 10 (60). 14 is displaced repeatedly in a substantially vertical direction corresponding to the direction of relative displacement (X direction). During this time, the vibration damping device 10 (60) exerts a vibration damping action by vibrating the viscoelastic material 38 (38 and 68) and the friction material 40 (40 and 70) according to their respective characteristics as described above. The vibration of the structure 130 is suppressed.

FIG. 14 shows a modification of the vibration damping structure 100 of FIG. In this modification, the vibration damping structure 100 includes a first substrate 12 and a second substrate 14 between an upper beam (first frame member) 102 and a lower beam (second frame member) 104. A plurality of (two in the figure) vibration damping devices 10 (60) are installed side by side in the direction of relative displacement (X direction). The plurality of vibration damping devices 10 (60) are installed with their respective first substrates 12 and second substrates 14 oriented in the same direction, and adjacent first substrates 12 are adjacent to each other, and adjacent second substrates 14 are adjacent to each other. They are fixed to each other by known fixing means such as bolts/nuts. When the structure 110 is vibrated, the individual vibration damping devices 10 (60) exhibit a vibration damping action substantially in synchronization, and suppress the vibration of the structure 110.

In the above modification, the number of the vibration damping devices 10 (60) can be variously set according to the vibration damping performance required for the structure 110. The number of the vibration damping devices 10 (60) can be easily increased or decreased by attaching/detaching known fixing means such as bolts/nuts for fixing the adjacent first substrates 12 and the adjacent second substrates 14 to each other. The vibration damping structure 120 of FIG. 13 may also include a plurality of vibration damping devices 10 (60).

Since the vibration damping structures 100 and 120 having the above-described configuration are provided with the vibration damping device 10 (60), the vibration damping performance is excellent in reliability and reproducibility, and the vibration damping performance can be simplified in accordance with the requirements of the building. It can be adjusted. In addition, since the space occupied by the vibration damping device 10 (60) in the structures 110 and 130 can be reduced, an opening (door) having a desired shape and size can be formed on the outer wall of the building including the vibration damping structures 100 and 120. , Windows, etc.) are easy to provide.

Although some embodiments have been described with reference to the drawings, the present invention is not limited to the structures shown and described above. For example, the horizontal or vertical orientation of the vibration damping device 10, 60 in the structure, the number and position of the bolts 26, 28, 42, 48 and the corresponding nuts, the dimensions of the first and second boards 12, 14. The dimensions and number of the first and second connecting plates 20 and 24, the material of each component, and the like may be variously changed from the configurations of the embodiments shown and described above according to the effect desired by the present invention. You can

10, 60 vibration damping device 12 first substrate 14 second substrate 16 holding plate 18 first support plate 20 first connecting plate 22 second supporting plate 24 second connecting plate 30 first surface 32 second surface 34 holding surface 38, 68 Viscoelastic material 40, 70 Friction material 42, 48 Bolt (fastening member)
44, 50 slot 62 composite damper layer 78 front side 80 back side 100, 120 damping structure 102, 104 beam 110, 130 structure 112, 114, 122, 124 column

Claims (12)

A vibration damping device installed on a structure including a pair of frame members arranged at a distance from each other,
A first substrate attached to the first frame member;
A second substrate attached to a second frame member and arranged adjacent to the first substrate, wherein the second substrate is attached to the first substrate as the first frame member and the second frame member move relative to each other. A second substrate that is displaced in-plane and laterally,
A first surface provided on the first substrate;
A second surface provided on the second substrate and facing the same side as the first surface;
A holding plate which is superposed on the first substrate and the second substrate and has a holding surface facing the first surface and the second surface;
A viscoelastic material sandwiched between the first surface and the holding surface;
A friction material that is sandwiched between the second surface and the holding surface and that is disposed on one side in the direction of relative displacement of the first substrate and the second substrate with respect to the viscoelastic material;
Equipped with,
The first substrate includes a first support plate supported by a first frame member, and a first connection plate connected to the first support plate and having the first surface,
The second substrate includes a second support plate supported by a second frame member, and a second connection plate connected to the second support plate and having the second surface,
The first support plate and the second support plate are arranged side by side in a direction orthogonal to the direction of the relative displacement,
The first connecting plate and the second connecting plate are arranged side by side in the relative displacement direction,
Vibration control device. The composite damper layer including the first connection plate and the second connecting plate and the holding plate and the viscoelastic material and said friction member comprises a plurality, vibration damping device according to claim 1. The first connecting plate and the second connecting plate of another one of the composite damper layers are arranged so as to overlap with each other on the holding plate of the one composite damper layer,
A viscoelastic material sandwiched between the holding plate of one of the composite damper layers and the first connecting plate of the other one of the composite damper layers;
And a friction material sandwiched between the holding plate of one of the composite damper layers and the second connecting plate of the other one of the composite damper layers.
The vibration damping device according to claim 2 . The control according to claim 2 or 3 , wherein both the first support plate and the second support plate have front and back sides opposite to each other, and the composite damper layer is installed on each of the front and back sides. Shaking device. The vibration damping device according to claim 4 , wherein the holding plate of the composite damper layer installed on the front side and the holding plate of the composite damper layer installed on the back side are fixedly fastened to each other. .. Further comprising a fastening member for fastening the holding plate on the front side and the holding plate on the back side to each other,
The first connecting plate has an elongated hole whose major axis is oriented in the direction of the relative displacement, and the fastening member penetrates the elongated hole,
The holding plate can move in the direction of the relative displacement with respect to the first connecting plate, with a limit of a position where the fastening member engages with an edge of the long hole in the long axis direction.
The vibration damping device according to claim 5 . Further comprising a fastening member for fastening the holding plate on the front side and the holding plate on the back side to each other,
The second connecting plate has an elongated hole whose major axis is oriented in the direction of the relative displacement, and the fastening member penetrates the elongated hole,
The friction material engages with the fastening member and can move integrally with the holding plate in the relative displacement direction with respect to the second connecting plate.
The vibration damping device according to claim 5 . First and second frame members spaced apart from each other;
A vibration damping device according to any one of claim 1 to 7
Damping structure of a building equipped with. 9. The vibration damping structure according to claim 8 , further comprising a plurality of the vibration damping devices installed between the first frame member and the second frame member side by side in the relative displacement direction. First and second frame members spaced apart from each other;
A vibration damping structure for a building, comprising: a plurality of vibration damping devices installed between the first frame member and the second frame member,
Each of the plurality of vibration damping devices,
A first substrate attached to the first frame member;
A second substrate attached to the second frame member and disposed adjacent to the first substrate, wherein the first substrate and the second frame member move relative to each other, and A second substrate which is displaced in-plane and laterally with respect to one substrate;
A first surface provided on the first substrate;
A second surface provided on the second substrate and facing the same side as the first surface;
A holding plate which is superposed on the first substrate and the second substrate and has a holding surface facing the first surface and the second surface;
A viscoelastic material sandwiched between the first surface and the holding surface;
A friction material that is sandwiched between the second surface and the holding surface and that is disposed on one side in the direction of relative displacement of the first substrate and the second substrate with respect to the viscoelastic material,
The plurality of vibration damping devices are installed side by side in the direction of the relative displacement,
Vibration control structure of the building. The vibration damping structure according to claim 10 , wherein each of the first and second frame members is a beam. The vibration damping structure according to claim 10 , wherein each of the first and second frame members is a pillar.

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