JP6280802B2 - Vibration control device - Google Patents

Description

  The present invention relates to a vibration control device.

  A vibration control device attached to a building is disclosed in, for example, Japanese Patent No. 4881019. As shown in FIG. 2 and FIG. 4, for example, the proposed vibration damping device has a pivot shaft (76) inserted through a block-shaped connecting member (77) fixed to the lower support (70). Oscillating plates (75a, 75b) are attached. Here, the pivot shaft (76) is a long hole that is long in the vertical direction. The pivot shaft (78) is inserted through the swing plates (75a, 75b) slightly above the position where the pivot shaft (76) is attached. The upper support portion (66) is inserted through the pivot shaft (78). A spacer (79) is mounted between the upper support portion (66) and the swing plates (75a, 75b). The spacer (79) maintains the distance between the upper support portion (66) and the swing plate (75).

  Further, above the pivot positions, the swing plates (75a, 75b) and the upper support (66) are connected via the viscoelastic body (82). Here, the viscoelastic body (82) is disposed between the opposing plate (80) and the plate (83), and is bonded to the plate (80) and the plate (83). On both sides of the upper support portion (66), the plate (80), the viscoelastic body (82), and the plate (83) are located in the gap between the upper support portion (66) and the swing plates (75a, 75b). Each is arranged. The plate (80) is attached to the respective back surfaces of the swing plates (75a, 75b) by bolts (81). The plate (83) is attached to the upper support portion (66).

  Further, a long hole (85) that is long in the lateral direction is formed near the lower side of the position where the viscoelastic body (82) is disposed with respect to the upper support (86). A bolt (86) is inserted into the elongated hole (85) between the pair of swing plates (75a, 75b). One plate (80) to which a viscoelastic body (82) is bonded is attached to the bolt (86). Further, a plurality of spacers (87) are attached to the bolt (86).

Japanese Patent No. 4881019

  By the way, the vibration control device having the above-described configuration is attached to a rectangular frame of a building. Here, the rectangular frame of the building is surrounded by the base of the building, a pair of pillars attached to the base, and the ceiling beam erected on the pillars, for example, with a wooden frame method or a wooden frame method. Space. A stud is appropriately attached to the rectangular frame. On the other hand, the vibration control device is required to be housed in such a rectangular frame, to be lightweight, and to have a required strength.

  The vibration control device proposed here includes an intermediate plate, a pair of viscoelastic bodies, a pair of outer plates, a transmission member, and a connecting member. Here, the pair of viscoelastic bodies are opposed to each other with the intermediate plate interposed therebetween, and are bonded to the intermediate plate. The pair of outer plates are opposed to each other on both sides of the intermediate plate with the viscoelastic body interposed therebetween. In addition, the pair of outer plates includes an adhesive portion bonded to the viscoelastic body and an opposing portion that protrudes from the intermediate plate and the viscoelastic body and faces each other. The transmission member includes a first transmission member connected to the pair of outer plates and a second transmission member connected to the intermediate plate. Moreover, the 1st transmission member is provided with the attachment piece extended between the opposing parts of a pair of outer side plate, and the sleeve which penetrated the attachment piece. Further, the sleeve is mounted in the gap between the opposed portions of the pair of outer plates. Here, the intermediate part of the sleeve which penetrated the attachment piece is welded to the attachment piece. The sleeve and the opposing portion of the pair of outer plates are connected by a connecting member. According to this configuration, in the configuration in which the first transmission member and the pair of outer plates are connected, it is easy to reduce the weight while ensuring the required strength.

  The opposing portions of the pair of outer plates may be provided on both sides of the adhesive portion. In this case, the attachment piece and the sleeve of the first transmission member may be housed between the pair of outer plates at the opposing portions provided on both sides with the adhesive portion interposed therebetween. And the 1st transmission member is good to be provided with the base which supports each of the attachment piece respectively accommodated in the opposing part. The connecting member may include a shaft member passed through the sleeve and a locking member that connects the shaft member to the facing portion.

FIG. 1 is a front view showing a wall structure of a building 200 to which a vibration control device 100 is attached. FIG. 2 is a front view showing the vibration control device 100. FIG. 3 is an enlarged view of the vibration control unit 10. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a side view of FIG. FIG. 6 is a plan view of the vibration control unit 10. FIG. 7 is a schematic diagram of a hysteresis loop drawn by the vibration control unit 10. FIG. 8 is a bottom view of the first transmission member 30. FIG. 9 is a diagram illustrating another embodiment of the vibration control device 100. FIG. 10 is a diagram showing the left base 43. FIG. 11 is a development view of the mounting plate 46. FIG. 12 is a diagram showing a cut surface cut along XII-XII in FIG. 3. FIG. 13 is a diagram showing another form of the attachment structure between the plate 14 and the second transmission member 40. FIGS. 14A and 14B are diagrams illustrating a state in which the ceiling beam 50 and the base 60 are relatively displaced in the horizontal direction in the building 200 to which the vibration control device 100 is attached. FIG. 15 is a side view of the stud 80. FIG. 16 is a side view showing a state in which the sleeve 300 constituting the bosses 32 a and 33 a is assembled to the attachment pieces 32 and 33 of the first transmission member 30. FIG. 17 is a side view showing the assembly of the opposing plates 12, 13, 14 and viscoelastic bodies 15, 16.

  Hereinafter, a vibration control device according to an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment. Moreover, the same code | symbol is attached | subjected suitably to the member or site | part which has the same effect | action. Each drawing is schematically drawn and does not necessarily reflect the real thing. Each drawing shows only an example and does not limit the present invention unless otherwise specified.

  Here, an example of the overall configuration of the vibration control device proposed here and the structure of the building 200 to which the vibration control device is attached will be described, and a characteristic configuration of the vibration control device proposed here will be mentioned.

<Building 200>
FIG. 1 is a front view showing a wall structure of a building 200 to which a vibration control device 100 is attached. Here, the building 200 includes a pair of horizontal shaft members (for example, a beam 50 (upper frame 50a) and a base 60 (lower frame 60a)) opposed to each other and a pair of vertical shafts respectively connected to the pair of horizontal shaft members. A rectangular frame 204 surrounded by a shaft member (for example, columns 70a and 70b) is provided. The vibration control device 100 is arranged in such a rectangular frame 204. Such a building 200 can be exemplified by a wooden house built by a frame construction method such as a wooden frame construction method and a frame wall construction method (also referred to as a two-by-four construction method).

<Rectangular framework 204>
For example, in the so-called wooden frame construction method, a rectangular frame surrounded by a base, a pair of columns, and a beam is constructed. In the so-called frame wall construction method, for example, a wooden frame is made of wood having a cross section of 2 inches × 4 inches or an integral multiple thereof, and a wall is assembled by fastening plywood or the like on the wood frame. The frame wall construction method sometimes uses wood with a cross section of 2 × 6, 2 × 10, 4 × 4, 2 × 8, etc., and is necessarily limited to wood with a cross section of 2 inches × 4 inches or an integral multiple thereof. Is not to be done. The vibration control device proposed here can be attached to both the wooden shaft construction method and the frame wall construction method. In this case, a building built by such a framed wall construction method can be attached to a wooden frame for constructing a wall. For example, the vibration control device 100 is attached to a rectangular frame surrounded by a frame corresponding to a pair of vertical shaft members (columns), an upper frame corresponding to a pair of horizontal shaft members, and a lower frame. In the frame wall construction method, the studs described later are distinguished from a pair of longitudinal members (columns), but can be treated as a frame.

  In the example shown in FIG. 1, the vibration control device 100 includes a rectangular frame surrounded by an upper frame 50 a attached to the beam 50 of the building 200, a lower frame 60 a attached to the base 60, and pillars 70 a and 70 b. 204. Here, the beam 50, the base 60, and the columns 70a and 70b are structural materials of the building 200, respectively. The beam 50 and the base 60 are beams that face each other vertically.

  In this embodiment, the vibration control device 100 is attached to the first floor of the building 200. On the first floor of the building 200, on the concrete foundation 202, a base 60, a foundation packing 107, and a lower frame 60a are attached in order. The base 60, the foundation packing 107, and the lower frame 60 a have insertion holes through which the anchor bolts 105 embedded in the concrete foundation 202 are inserted, and are attached to the anchor bolts 105. Here, the thickness of the foundation packing 107 is about 20 mm, and is attached to ensure ventilation in the concrete foundation 202. Further, the beam 50 is a ceiling beam (also called a second-floor floor beam in a two-story house), and is hereinafter referred to as “ceiling beam 50” as appropriate. Here, an upper frame 50 a is attached to the lower surface of the beam 50. The columns 70 a and 70 b are attached between a lower frame 60 a attached to the base 60 and an upper frame 50 a attached to the beam 50. Here, the pillars 70a and 70b, the lower frame 60a, and the upper frame 50a are about 90 mm (for example, 89 mm). The thickness of the foundation packing 107 and the dimensions of the columns 70a and 70b, the lower frame 60a, and the upper frame 50a are not particularly limited to the above. In the illustrated example, the foundation packing 107 is provided, but the foundation packing 107 may be omitted.

  Here, the vibration control device 100 includes the base 60 (lower frame 60a), the ceiling beam 50 (upper frame 50a), and the pillars 70a and 70b on the first floor of the building 200 that rises from the base 60 and supports the ceiling beam 50. Are attached to a rectangular frame 204 surrounded by.

<< Seismic control device 100 >>
Next, the vibration control device 100 will be described. FIG. 2 is a front view showing the vibration control device 100. FIG. 3 is an enlarged view of the vibration control unit 10. 4 is a cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a side view of FIG. FIG. 6 is a plan view of the vibration control unit 10. FIG. 7 is a schematic diagram of a hysteresis loop drawn by the vibration control unit 10. As shown in FIGS. 2 to 5, the vibration control device 100 includes opposing plates 12, 13, 14, viscoelastic bodies 15, 16, a first transmission member 30, and a second transmission member 40. Yes. Further, in this embodiment, the vibration control device 100 includes a stud 80.

<< Control unit 10 >>
Here, the opposing plates 12, 13, 14 and the viscoelastic bodies 15, 16 constitute a vibration control unit 10 that can exhibit a vibration control function in the vibration control device 100.

<Plate 12, 13, 14>
Opposing plates 12, 13, and 14 are steel plates each having a required rigidity. As shown in FIGS. 3 to 5, the opposing plates 12, 13, and 14 are disposed so that the plate 12 and the plate 13 sandwich the plate 14 and face the plate 14, respectively. Here, among the plates 12, 13, and 14, the intermediate plate 14 disposed in the middle is appropriately referred to as an intermediate plate. In addition, the pair of outer plates 12 and 13 disposed outside the intermediate plate 14 are appropriately referred to as outer plates. The pair of outer plates 12 and 13 are substantially rectangular steel plates. In this embodiment, the pair of outer plates 12 and 13 are curves in which one piece of the long side swells in an arc shape, and are arranged in parallel with their orientations aligned. The intermediate plate 14 is rectangular. One side in the longitudinal direction of the intermediate plate 14 is disposed between the pair of outer plates 12 and 13. The opposite side of the intermediate plate 14 extends so as to protrude from one side of the pair of outer plates 12 and 13 swelled in an arc shape.

  That is, one side in the longitudinal direction of the intermediate plate 14 is interposed with respect to a region where the pair of outer plates 12 and 13 face each other. The side opposite to the longitudinal direction of the intermediate plate 14 protrudes from the region. A flange 17 is provided at one end of the intermediate plate 14 that protrudes from the region so as to be orthogonal to the intermediate plate 14. In this embodiment, the flange 17 is welded to one end of the intermediate plate 14. The flange 17 is an elongated rectangular plate longer than one end of the intermediate plate 14. The flange 17 is formed with insertion holes (not shown) for inserting the bolts 18 on both sides protruding from one end of the intermediate plate 14. Further, both sides of the pair of outer plates 12 and 13 in the longitudinal direction protrude from the region where the intermediate plate 14 is interposed. As shown in FIG. 6, insertion holes 22 for inserting bolts 37 (see FIGS. 3 and 5) are formed in the portions 12 b and 13 b that protrude from the region where the intermediate plate 14 overlaps and face each other. .

<Viscoelastic bodies 15, 16>
The viscoelastic bodies 15 and 16 are disposed between the opposing plates 12, 13, and 14 and bonded to the respective plates. In this embodiment, the viscoelastic bodies 15 and 16 are each formed into a rectangular flat plate shape. The viscoelastic bodies 15 and 16 are disposed in rectangular regions where the plates 12, 13, and 14 overlap each other when viewed from the normal direction of the plates 12, 13, and 14. Here, the viscoelastic body 15 is disposed between the outer plate 12 and the intermediate plate 14 and bonded thereto. The viscoelastic body 16 is disposed between the outer plate 13 and the intermediate plate 14 and bonded thereto. The viscoelastic bodies 15 and 16 are made of, for example, viscoelastic rubber (damping rubber) having high damping properties. The viscoelastic bodies 15 and 16 and the plates 12, 13 and 14 are bonded by vulcanization adhesion. Here, as shown in FIG. 6, the pair of outer plates 12 and 13 are opposed to each other with the viscoelastic bodies 15 and 16 sandwiched on both surfaces of the intermediate plate 14. With respect to the pair of outer plates 12 and 13, portions bonded to the viscoelastic bodies 15 and 16 are referred to as bonding portions 12a and 13a. The portions that protrude from the intermediate plate 14 and the viscoelastic bodies 15 and 16 and face each other are referred to as facing portions 12b and 13b.

  The viscoelastic rubber (damping rubber) used as the viscoelastic bodies 15 and 16 includes, for example, natural rubber, styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), butadiene rubber material ( BR), isoprene rubber (IR), butyl rubber (IIR), halogenated butyl rubber (X-IIR), and chloroprene rubber (CR) rubber materials are added to produce high damping properties. A rubber composition can be used. Various additives such as carbon black are known as additives exhibiting high attenuation.

<Hysteresis loop H>
Here, FIG. 6 illustrates a state in which the intermediate plate 14 is translated with respect to the pair of outer plates 12 and 13. As shown in FIG. 6, in the vibration control unit 10, when the intermediate plate 14 moves in parallel with respect to the pair of outer plates 12 and 13, shear deformation occurs in the viscoelastic bodies 15 and 16. At this time, a hysteresis loop H (measured hysteresis curve) as shown in FIG. 7 is drawn from the relationship between the shear displacement generated in the viscoelastic bodies 15 and 16 and the shear load. In FIG. 7, the horizontal axis indicates the displacement in the shear direction, and the vertical axis indicates the shear load at that time. According to the hysteresis loop H, it can be seen that the shear load increases as the shear displacement increases, and the resistance force of the viscoelastic bodies 15 and 16 increases. When the viscoelastic bodies 15 and 16 receive vibration accompanied by shear deformation, the viscoelastic bodies 15 and 16 can absorb an amount of energy corresponding to the area surrounded by the hysteresis loop H every cycle.

<< First Transmission Member 30, Second Transmission Member 40 >>
In this embodiment, the vibration control unit 10 is attached to the building 200 via the first transmission member 30 and the second transmission member 40. The first transmission member 30 and the second transmission member 40 are attached to the upper frame 50a and the lower frame 60a of the building 200, and transmit the shear displacement generated in the building 200 to the vibration control unit 10. Hereinafter, the first transmission member 30 and the second transmission member 40 will be described.

<< First transmission member 30 >>
The first transmission member 30 is a member connected to the pair of outer plates 12, 13 among the opposing plates 12, 13, 14. In this embodiment, the first transmission member 30 includes a base 31 and mounting pieces 32 and 33.

<Base 31>
FIG. 8 is a bottom view of the first transmission member 30 (viewed from below when attached to the upper frame 50a). In this embodiment, the base 31 is a substantially rectangular plate-like member that is longer than the plates 12 and 13 of the vibration control unit 10 and is attached to the upper frame 50a. The attachment pieces 32 and 33 are rectangular plate materials shorter than the base 31 and are provided on the base 31. The attachment pieces 32 and 33 are portions to which the pair of outer plates 12 and 13 of the vibration control unit 10 are attached. The attachment pieces 32 and 33 are attached at an intermediate portion of the base 31 with a predetermined interval. Further, as shown in FIG. 8, the base 31 has a narrow width between the portions where the mounting pieces 32 and 33 are provided. The intermediate part of the attachment pieces 32 and 33 is a space for arranging the end part of the intermediate pillar 80 when attaching the intermediate pillar 80. The base 31 further extends on both sides from the portion where the mounting pieces 32 and 33 are provided. Bolt holes 31a to be attached to the upper frame 50a are formed on both side portions.

<Mounting pieces 32, 33>
Here, the attachment pieces 32, 33 are aligned at the center of the base 31 in the width direction, the short sides of the attachment pieces 32, 33 are aligned with the length direction of the base 31, and perpendicular to the base 31. It is provided to protrude. As shown in FIG. 1, the base 31 is attached to the lower surface of the upper frame 50a with the length direction aligned with the length direction of the upper frame 50a. The attachment pieces 32 and 33 extend downward from the base 31. The base 31 and the mounting pieces 32 and 33 have required rigidity. The spacing between the mounting pieces 32 and 33 is sufficient to accommodate the intermediate plate 14 and the viscoelastic bodies 15 and 16 of the vibration control unit 10, and is attached to both side portions of the pair of outer plates 12 and 13 in the length direction. Is set to be. A pair of outer plates 12, 13 are attached to the attachment pieces 32, 33, and bosses 32 a, 33 a through which bolts 37 are inserted are respectively provided at portions where the pair of outer plates 12, 13 are attached. Here, the structure of the bosses 32a and 33a will be described in more detail later.

<Attachment of the first transmission member 30 and the upper frame 50a>
As shown in FIG. 1, the first transmission member 30 arranges the base 31 along the lower surface of the upper frame 50 a in a rectangular frame 204 of the building 200. And it fixes to the predetermined position of the upper frame 50a with the fastener (for example, lag screw bolt and bis | screw) attached to the bolt hole 31a formed in the base 31. FIG.

<Attachment of the pair of outer plates 12, 13 and the first transmission member 30>
In this embodiment, as shown in FIGS. 2 and 5, the intermediate plate 14 and the viscoelastic bodies 15 and 16 of the vibration control unit 10 are disposed between the attachment pieces 32 and 33 of the first transmission member 30. . The pair of outer plates 12 and 13 are attached to the attachment pieces 32 and 33 of the first transmission member 30. The interval between the mounting pieces 32 and 33 of the first transmission member 30 is such that the intermediate plate 14 and the viscoelastic bodies 15 and 16 are sufficiently accommodated in consideration of the deformation amount of the viscoelastic bodies 15 and 16.

  Bosses 32a and 33a are contained in the gaps between the mounting pieces 32 and 33 and the pair of outer plates 12 and 13. Insertion holes 34 and 35 are provided in the bosses 32a and 33a of the attachment pieces 32 and 33, respectively. The mounting pieces 32 and 33 and the pair of outer plates 12 and 13 are aligned with the positions of the insertion holes 22, 34, and 35 (see FIGS. 6 and 8), the bolts 37 are inserted, and fastened with the nuts 38. ing. Here, the bosses 32a and 33a keep the distance between the pair of outer plates 12 and 13 appropriately. Further, the intermediate plate 14 hits the attachment pieces 32 and 33 and the bosses 32a and 33a when an excessively large deformation is input to the viscoelastic bodies 15 and 16. For this reason, the attachment pieces 32 and 33 and the bosses 32a and 33a can function as stoppers that restrict the viscoelastic bodies 15 and 16 from being deformed excessively.

<< Second transmission member 40 >>
The second transmission member 40 is a member connected to the intermediate plate 14 among the opposing plates 12, 13, and 14. In this embodiment, the second transmission member 40 includes braces 41 and 42 and a mounting plate 46.

<Brace 41, 42>
The braces 41 and 42 extend along a virtual plane A parallel to the opposing plates 12, 13, and 14. One end of each of the braces 41 and 42 is opposed to the flange 17 provided on the intermediate plate 14, and a side surface of the end portion in a direction orthogonal to the virtual plane A is recessed.

  The braces 41 and 42 are notched in the recessed portions 41a and 42a of the braces 41 and 42. Further, the recessed portions 41 a and 42 a of the braces 41 and 42 are provided on both side surfaces in the direction orthogonal to the virtual plane A, respectively. In this embodiment, the form in which the braces 41 and 42 are cut out at the recessed portions 41a and 42a is illustrated, but the braces 41 and 42 are pressed at the recessed portions 41a and 42a. Also good. In addition, when it is based on a notch, the weight reduction of the damping device 100 can be achieved, for example. On the other hand, when pressed, it is easy to maintain the strength of the recessed portions 41a and 42a. Also, less material is discarded.

  In this embodiment, the recessed portions 41a and 42a of the braces 41 and 42 are provided on the side surfaces on both sides in the direction orthogonal to the virtual plane A as shown in FIG. For example, FIG. 9 illustrates another form. The recessed portions 41a and 42a of the braces 41 and 42 may be provided only on one side surface in the direction orthogonal to the virtual plane A, as shown in FIG. (In the form shown in FIG. 9, the brace 42 is drawn, but the brace 41 has the same structure. In this case, the recessed portions 41a and 42a can be easily processed, and the case of notches is used. In particular, the processing cost can be kept low.

  A mounting plate 46 is attached to the recessed portions 41 a and 42 a of the braces 41 and 42. Here, the entire structure of the braces 41 and 42 will be described first, and the mounting plate 46 will be described later.

  In this embodiment, the braces 41 and 42 are hollow shaft members. As shown in FIG. 2, the braces 41 and 42 are composed of two braces whose distances gradually increase from the flange 17. Further, a bridge 45 extending between the braces 41 and 42 is attached to the middle of the braces 41 and 42 in the longitudinal direction. In the illustrated example, the number of the bridges 45 is one, but a plurality of bridges 45 may be provided between the braces 41 and 42. And the base parts 43 and 44 are provided in the edge part on the opposite side. The base parts 43 and 44 are parts attached to a rectangular frame 204 (in this embodiment, the lower frame 60a). In this embodiment, the left and right braces 41 and 42 are provided with base portions 43 and 44, respectively.

<< Base 43, 44 >>
FIG. 10 illustrates the left base 43. The right base 44 has a similar structure. As shown in FIG. 10, the base portions 43 and 44 include base portions 43a and 44a and flange portions 43b and 44b. The base parts 43a and 44a are parts that are attached along the lower frame 60a. In this embodiment, the base portion 43 a is disposed so as to face the end portions of the braces 41 and 42. The flange portions 43b and 44b rise from the base portions 43a and 44a. Although only one side of the base portion 43a is shown in FIG. 10, in this embodiment, the flange portions 43b and 44b are disposed on both sides of the base portion 43a so as to sandwich the end portions 41b and 42b of the braces 41 and 42, respectively. Is provided. The end portions 41b and 42b of the braces 41 and 42 are welded to the flange portions 43b and 44b, respectively.

  As shown in FIG. 1, the base portions 43 a and 44 a are attached to anchor bolts 105 embedded in the concrete foundation 202. For this reason, as shown in FIG. 10, the base portion 43a is provided with an insertion hole 43a1 through which the anchor bolt 105 is inserted. A reinforcing plate 43c that reinforces the base portion 43a is attached around the insertion hole 43a1. The base portion 43a is provided with insertion holes 43a2 and 43a3 for inserting fasteners (for example, bolts (the lag screw bolts 106 in the example shown in FIG. 1)) for fastening with the lower frame 60a. It has been. In the illustrated example, the reinforcing plate 43c is attached to the base portion 43a. However, for example, when the required strength is secured to the base portion 43a, the reinforcing plate 43c may not be attached.

<< Mounting plate 46 >>
As described above, the mounting plate 46 is attached to the recessed portions 41a, 42a of the braces 41, 42. Here, FIG. 11 is a development view of the mounting plate 46. The mounting plate 46 includes a fixed portion 46a and a pair of mounting pieces 46b and 46c.

<Fixing part 46a>
The fixing portion 46 a is a portion that is fixed to the flange 17 provided on the intermediate plate 14 of the vibration control unit 10. In this embodiment, the flange 17 welded to one end of the intermediate plate 14 is an elongated rectangular plate material that is longer than one end of the intermediate plate 14. The fixing portion 46 a is a long and narrow rectangular portion, like the flange 17. Further, the flange 17 is formed with an insertion hole (not shown) for inserting the bolt 18 (see FIGS. 3 and 5) at a portion protruding from the region where the plate 14 overlaps. An insertion hole 46a1 for inserting the bolt 18 is also formed in the fixing portion 46a of the mounting plate 46 in accordance with the insertion hole.

<Mounting pieces 46b, 46c>
As shown in FIG. 11, the pair of attachment pieces 46b and 46c extend from the fixed portion 46a. Here, the side surfaces of the braces 41 and 42 in the direction orthogonal to the virtual plane A parallel to the opposing plates 12, 13 and 14 are recessed. When the pair of attachment pieces 46b and 46c are attached to the braces 41 and 42, they are joined (for example, welded) to the recessed portions 41a and 42a of the braces 41 and 42 as shown in FIG.

  Here, in the form shown in FIG. 5, the braces 41 and 42 are provided with recessed portions 41 a and 42 a on both side surfaces in the direction orthogonal to the virtual plane A, respectively. That is, in this case, the recessed portions 41a and 42a are also provided on the surface opposite to the recessed portions 41a and 42a. The pair of attachment pieces 46b and 46c are welded to recessed portions 41a and 42a provided on both side surfaces in the direction orthogonal to the virtual surface A of the braces 41 and 42. Here, welding is illustrated as a joining method of the pair of attachment pieces 46b and 46c and the recessed portions 41a and 42a of the braces 41 and 42. However, the joining method of such portions is not limited to welding. Various methods (for example, adhesion and fastening) can be adopted.

  On the other hand, in another embodiment, as shown in FIG. 9, the braces 41 and 42 are provided with portions 41 a and 42 a that are recessed only on one side surface in the direction orthogonal to the virtual plane A. In this case, one attachment piece 46b of the pair of attachment pieces 46b and 46c of the attachment plate 46 is welded to the recessed portions 41a and 42a, and the other attachment piece 46c is welded to the recessed portions 41a and 42a. It may be welded to the opposite surface 42c. Thus, one of the pair of attachment pieces 46b and 46c is joined to the recessed portions 41a and 42a of the braces 41 and 42, and the other is joined to the surface opposite to the recessed portions 41a and 42a ( For example, it may be welded.

<Notches 46b1, 46c1>
In this embodiment, as shown in FIGS. 2 and 3, the brace is composed of two braces 41 and 42 whose distances gradually increase from the flange 17. On the other hand, the pair of mounting pieces 46b and 46c are formed with notches 46b1 and 46c1 between the two braces 41 and 42, respectively. In other words, the pair of attachment pieces 46b and 46c includes two attachment portions 46b2, 46b3, 46c2, and 46c3 that extend along the two braces 41 and 42, respectively.

  For example, the mounting plate 46 may be punched from a single steel plate into a predetermined shape as shown in FIG. 11 and bent into a shape along the braces 41 and 42. Here, broken lines b1 and b2 in FIG. 11 indicate fold lines where the attachment pieces 46b and 46c are bent, respectively. Here, the mounting plate 46 punched from one steel plate is bent along the folding lines b 1 and b 2, and the two mounting portions 46 b 2, 46 b 3, 46 c 2 and 46 c 3 are arranged along the braces 41 and 42. And it is good to weld the corner | angular part w (refer FIG. 12) of the part which the attaching parts 46b2, 46b3, 46c2, 46c3 and the braces 41 and 42 overlap.

  At the time of welding, for example, the welding torch may be inserted from the notches 46b1 and 46c1 formed in the attachment pieces 46b and 46c into the corner portion w that is a welding location. Thus, welding work becomes easy by forming the notches 46b1 and 46c1 in the mounting pieces 46b and 46c. In this respect, the notches 46b1 and 46c1 are preferably formed in at least one of the attachment pieces 46b and 46c. In another aspect, the notches 46b1 and 46c1 are preferably formed in both the attachment pieces 46b and 46c, which will be described later.

  In this embodiment, the braces 41 and 42 are hollow shaft members, and recessed portions 41a and 42a are provided on the side surfaces on both sides in the direction orthogonal to the imaginary plane A at one ends 41b and 42b of the braces 41 and 42. It has been. Further, in this embodiment, the recessed portions 41a and 42a are notched. FIG. 12 is a view showing a cut surface of the brace 41 and the attachment pieces 46b and 46c cut along XII-XII in FIG. As described above, the recessed portions 41a and 42a are covered with the mounting pieces 46b and 46c of the mounting plate 46 (in this embodiment, the mounting portions 46b2, 46b3, 46c2, and 46c3) and are welded. In FIG. 12, w indicates a welding location. In this way, the recessed portions 41a and 42a are welded so as to cover the mounting pieces 46b and 46c of the mounting plate 46. In this case, there are many welding locations, and the required strength is secured at the locations. Moreover, in this embodiment, although the braces 41 and 42 are notched in the recessed parts 41a and 42a, the attachment pieces 46b and 46c of the attachment plate 46 thicker than the braces 41 and 42 are attached. Therefore, the required strength is also secured in this respect. In this case, as shown in FIG. 12, the thickness t1 of the attachment pieces 46b and 46c is preferably larger than the thickness t2 of the braces 41 and 42. Thereby, the intensity | strength of the said site | part can fully be strengthened.

<Attachment of Second Transmission Member 40 and Lower Frame 60a>
Here, as shown in FIG. 1, in the rectangular frame 204 of the building 200, the second transmission member 40 has, as described above, the base portions 43 and 44 attached to the lower ends of the braces 41 and 42 as the lower frame 60a. Arrange along. Then, fasteners (for example, anchor bolts 105, bolts (lag screw bolts 106) and screws) are attached to the insertion holes 43a1, 43a2, 43a3 provided in the base portions 43a, 44a of the base portions 43, 44, and the base portion 43 , 44 may be fixed on the lower frame 60a. Accordingly, the second transmission member 40 is installed in a state of standing in the rectangular frame 204.

<Attachment of Intermediate Plate 14 and Second Transmission Member 40>
Here, the flange 17 is attached to one end of the intermediate plate 14 (the end on the side where the second transmission member 40 is attached). The second transmission member 40 attaches the fixing portion 46 a of the attachment plate 46 to the flange 17.

<Presser member 47>
In this embodiment, the vibration damping device 100 includes a pressing member 47 that is disposed on the opposite side of the flange 17 with respect to the fixing portion 46 a of the mounting plate 46 and fastened to the flange 17. Here, the pressing member 47 is a long plate material that can be mounted on the inner side surface of the fixing portion 46 a of the mounting plate 46 (the side surface where the ends of the braces 41 and 42 face each other). The holding member 47 has the same length as the flange 17 and faces the flange 17 with the fixing portion 46a of the mounting plate 46 interposed therebetween. And the insertion hole 46a1 for inserting the volt | bolt 18 (refer FIG. 3 and FIG. 5) is formed similarly to the flange 17 and the fixing | fixed part 46a. The pressing member 47 is inserted between the end portions of the braces 41 and 42 and the fixing portion 46a, and is attached to the inner side of the mounting plate 46 (the inner surface of the fixing portion 46a). And the position of the insertion hole of each of these members is matched, and the bolt 18 is inserted and stopped with the nut 20 as shown in FIGS. 2, 3, and 5.

  FIG. 13 illustrates another form of the attachment structure between the intermediate plate 14 and the second transmission member 40. In the form shown in FIG. 13, the pressing member 47 is not employed, and the fixing portion 46 a of the mounting plate 46 is fastened to the intermediate plate 14 by the bolt nuts 18 and 20. If the mounting plate 46 has sufficient strength, the mounting plate 46 may be fixed to the intermediate plate 14 without using the pressing member 47 as described above.

<< Mounting structure of damping device 100 >>
As shown in FIG. 2, the vibration control device 100 includes a vibration control unit 10, a first transmission member 30, and a second transmission member 40. As shown in FIG. 1, the seismic control device 100 is disposed in a rectangular frame 204 of the building 200. In this embodiment, for example, the second transmission member 40 is attached to the lower frame 60a of the building 200. Next, the first transmission member 30 is attached to the upper frame 50a of the building 200. And it is good to arrange | position the damping unit 10 between the 1st transmission member 30 and the 2nd transmission member 40, and to attach to each. Attachment of the first transmission member 30 and the upper frame 50a, attachment of the pair of outer plates 12, 13 and the first transmission member 30, attachment of the second transmission member 40 and the lower frame 60a, and the intermediate plate 14 and the first Since attachment with the 2 transmission member 40 is as having already demonstrated, description is abbreviate | omitted here.

  In the vibration control device 100, the shear displacement generated in the building 200 is transmitted to the vibration control unit 10 by the first transmission member 30 and the second transmission member 40. FIGS. 14A and 14B show a state in which the ceiling beam 50 and the base 60 are relatively displaced in the horizontal direction with respect to the building 200 to which the vibration control device 100 is attached. Here, FIG. 14A shows a state in which the ceiling beam 50 is displaced to the right side with respect to the base 60, and FIG. 14B shows a state in which the ceiling beam 50 is displaced to the left side with respect to the base 60. Shows the state. Here, the state where the spacers 80 are excluded is shown. FIGS. 14A and 14B are appropriately simplified, and for example, the upper frame 50a and the lower frame 60a are not shown.

  In such a building 200, when a large earthquake occurs, the ceiling beam 50 and the base 60 shake with relative displacement in the horizontal direction. For this reason, a relative displacement occurs between the first transmission member 30 attached to the ceiling beam 50 and the second transmission member 40 attached to the base 60. If the 1st transmission member 30 and the 2nd transmission member 40 are displaced relatively, relative displacement will arise in the plates (12, 13) and 14 which the damping unit 10 opposes. When relative displacement occurs in the opposing plates (12, 13), 14, shear deformation occurs in the viscoelastic bodies 15, 16 as shown in FIG. In the event of a large earthquake, the ceiling beam 50 (first transmission member 30) and the pair of outer plates 12, 13 and the base 60 (second transmission member 40) and the intermediate plate 14 shake with relative displacement in the horizontal direction. . At this time, repeated shear loads are input to the viscoelastic bodies 15 and 16.

  As shown in FIG. 7, the viscoelastic bodies 15 and 16 have resistance to a shear load and, when subjected to vibration accompanied by shear deformation, have an area surrounded by the hysteresis loop H for each cycle. A corresponding amount of energy can be absorbed. For this reason, the seismic control device 100 can suppress the vibration of the building 200 at the time of an earthquake, attenuate the vibration at an early stage, and reduce the degree of damage and damage caused to the building 200.

<< Space pillar 80 >>
Next, the spacer 80 will be described.

  As shown in FIG. 1, in the rectangular frame 204, the intermediate pillar 80 has a ceiling beam 50 (upper frame 50a in FIG. 1) and a base 60 (lower frame in FIG. 1) at an intermediate position between the pair of pillars 70a and 70b. 60a). In this embodiment, the vibration control device 100 is disposed between the two braces 41 and 42. And the stud 80 is extended along the up-down direction so that it may pass through the site | part in which the damping unit 10 (The opposing plates (12, 13) and 14 and the viscoelastic bodies 15 and 16) were provided.

  In this embodiment, as shown in FIG. 1, the studs 80 are attached to the upper frame 50 a and the lower frame 60 a so as to vertically cut the vibration control device 100 at an intermediate portion of the rectangular frame 204. FIG. 15 is a side view of the stud 80. As shown in FIG. 15, notches 81 and 82 are formed in the space 80 at portions where the vibration control device 100 is vertically cut. In this embodiment, the notch 81 is provided at a site where the vibration control unit 10, the first transmission member 30, and the second transmission member 40 cross the stud 80. Further, the notch 82 is provided at a portion where the bridge 45 crosses the spacer 80. Each notch 81, 82 is provided with a step 81 a, 82 a that is one step higher than the bottom of the notch 81, 82. Moreover, each notch 81 and 82 is provided with the lid | cover 83 and 84 which covers this. The lids 83 and 84 are attached to the steps 81a and 82a. As a result, in the notches 81 and 82, gaps in which the vibration control device 100 is accommodated are formed in the studs 80 with the lids 83 and 84 attached.

  In this embodiment, as shown in FIG. 1, the vibration control unit 10, the first transmission member 30, and the second transmission member 40 are housed in the notch 81 of the stud 80. The notch 82 accommodates the bridge 45. Moreover, the upper end and the lower end of the stud 80 may be fixed to the upper frame 50a and the lower frame 60a by, for example, driving a nail or a screw diagonally.

  In this embodiment, as shown in FIGS. 3 and 6, the mounting pieces 46b and 46c of the mounting plate 46 are provided with notches 46b1 and 46c1, respectively. A part of the spacer 80 is accommodated in the gap provided with the notch. For this reason, the notch 81 formed in the stud 80 can be made small. In this case, since the notch 81 formed in the stud 80 can be made small, the strength of the stud 80 can be easily secured. From this point of view, the attachment pieces 46b and 46c of the attachment plate 46 are preferably provided with notches 46b1 and 46c1 on both sides. It should be noted that a slight gap may be generated in the inter-column 80 at a site where members constituting the vibration control device 100 cross. In order to ensure the fire prevention performance according to the quasi-fireproof structure defined by the Building Standard Law, such a gap is allowed to be a slight gap that causes no problem.

  In other words, in this embodiment, in the thickness direction of the rectangular frame 204, the inter-column 80, the upper frame 50a, the lower frame 60a, and the columns 70a and 70b have approximately the same width. And in the part which the member which comprises the damping device 100 crosses, ie, the part to which the lid | cover 83, 84 was attached to the stud 80 also in the thickness direction of the rectangular frame 204, the upper frame 50a, the lower frame 60a, and the column The width is approximately the same as 70a and 70b. As a result, the stud 80 can appropriately divide the space of the rectangular frame 204. By attaching such a spacer 80, the building 200 to which the seismic control device 100 is attached is regarded as a structure having fireproof performance in accordance with the semi-fireproof structure defined by the Building Standard Law.

<< Structure of Boss 32a, 33a >>
The structure of the bosses 32a and 33a will be further described in detail for the proposed vibration damping device 100. Here, FIG. 16 is a side view showing a state in which the sleeve 300 constituting the bosses 32a and 33a is assembled to the attachment pieces 32 and 33 of the first transmission member 30, and is partially broken. FIG. 17 is a side view showing the assembly of the opposing plates 12, 13, 14 and viscoelastic bodies 15, 16.

  In the proposed vibration damping device 100, as shown in FIG. 6, the pair of outer plates 12 and 13 are opposed to each other on both sides of the intermediate plate 14 with the viscoelastic bodies 15 and 16 therebetween. The pair of outer plates 12 and 13 includes adhesion portions 12a and 13a adhered to the viscoelastic bodies 15 and 16, and opposed portions 12b and 13b that protrude from the intermediate plate 14 and the viscoelastic bodies 15 and 16 and face each other. ing. As shown in FIG. 16, the bosses 32 a and 33 a are configured by a sleeve 300 penetrating the attachment pieces 32 and 33.

  As shown in FIG. 17, the sleeve 300 is mounted in the gap S <b> 1 between the facing portions 12 b and 13 b of the pair of outer plates 12 and 13. Here, the length L1 (see FIG. 16) of the sleeve 300 formed by the bosses 32a and 33a is approximately the same as the distance L2 (see FIG. 17) between the pair of outer plates 12 and 13. In other words, the sleeve 300 has a length that can fit in the gap S1 between the pair of outer plates 12 and 13. In other words, the sleeve 300 has a length that corresponds to the sum of the thickness of the intermediate plate 14 and the thickness of the pair of viscoelastic bodies 15 and 16.

  On the other hand, a through-hole 310 for inserting the sleeve 300 is formed in the attachment pieces 32 and 33 of the first transmission member 30. The through hole 310 may be formed with a hole that is approximately the same as or slightly larger than the outer diameter of the sleeve 300. The sleeve 300 passes through the attachment pieces 32 and 33 through the through hole 310.

  In this embodiment, the thicknesses of the viscoelastic bodies 15 and 16 bonded to both sides of the intermediate plate 14 are the same. On the other hand, the middle position in the middle of the length direction of the sleeve 300 is aligned with the through hole 310 of the mounting pieces 32 and 33. As a result, the sleeves 300 protruding from the mounting pieces 32 and 33 have the same length on both sides of the mounting pieces 32 and 33. Therefore, when the bosses 32a and 33a of the attachment pieces 32 and 33 are accommodated in the facing portions 12b and 13b of the pair of outer plates 12 and 13, the intermediate plate 14 and the attachment pieces 32 and 33 are connected to each other. , 13 is located at the middle position. Then, when the intermediate plate 14 is displaced with respect to the pair of outer plates 12 and 13 with the shear deformation of the viscoelastic bodies 15 and 16, the intermediate plate 14 is disposed so as to contact the mounting pieces 32 and 33.

  In this manner, the attachment pieces 32 and 33 and the attachment pieces 32 and 33 are welded in a state where the sleeve 300 is assembled to the attachment pieces 32 and 33. The welding of the sleeve 300 and the mounting pieces 32 and 33 is, for example, by fillet welding. Further, the outer peripheral surface of the sleeve 300 and the edge of the through hole 310 of the attachment pieces 32 and 33 may be welded over the entire circumference of the through hole 310 of the attachment pieces 32 and 33. Thereby, the required joining strength is ensured between the sleeve 300 and the mounting pieces 32 and 33.

  In this embodiment, as shown in FIGS. 3 and 6, opposed portions 12 b and 13 b are provided on both sides of the adhesive portions 12 a and 13 a of the pair of outer plates 12 and 13, respectively. The sleeve 300 (the bosses 32a and 33a) attached to the attachment pieces 32 and 33 of the first transmission member 30 has a pair of outer plates 12 at opposing portions 12b and 13b provided on both sides of the adhesive portions 12a and 13a. , 13 respectively. In this embodiment, the first transmission member 30 includes a base 31 that integrally supports the attachment pieces 32 and 33 housed in the facing portions 12b and 13b, respectively. In this embodiment, the attachment pieces 32 and 33 and the base 31 are welded, and the required rigidity is ensured.

  And the said sleeve 300 (boss | hub 32a, 33a) and the opposing parts 12b and 13b of a pair of outer side plates 12 and 13 are connected by the connection member (37, 38). Here, the connecting members (37, 38) include a shaft member 37 passed through the sleeve 300 (bosses 32a, 33a), and a locking member 38 for connecting the shaft member 37 to the facing portions 12b, 13b. . Specifically, in this embodiment, the shaft member 37 is a bolt shaft of the bolt 37, and the locking member 38 is a nut 38 that locks the bolt.

  Thus, as shown in FIGS. 3, 5, 16, and 17, the proposed vibration damping device 100 includes a pair of outer plates 12, 13, an intermediate plate 14, and a pair of viscoelastic bodies. 15, 16, transmission members 30, 40 (especially refer to FIG. 3), and connection members 37, 38 (refer particularly to FIG. 5).

  Here, as shown in FIG. 17, the pair of viscoelastic bodies 15 and 16 are opposed to each other with the intermediate plate 14 interposed therebetween, and are bonded to the intermediate plate 14. The pair of outer plates 12 and 13 are opposed to each other on both sides of the intermediate plate 14 with the viscoelastic bodies 15 and 16 therebetween. Further, as shown in FIGS. 3 and 6, the pair of outer plates 12 and 13 protrude from the adhesive portions 12 a and 13 a bonded to the viscoelastic bodies 15 and 16, and the intermediate plate 14 and the viscoelastic bodies 15 and 16. And opposing portions 12b and 13b facing each other.

  As shown in FIG. 3, the transmission members 30 and 40 include a first transmission member 30 connected to the pair of outer plates 12 and 13 and a second transmission member 40 connected to the intermediate plate 14. Here, as shown in FIGS. 5 and 16, the first transmission member 30 includes attachment pieces 32 and 33 extending between the facing portions 12 b and 13 b of the pair of outer plates 12 and 13, and attachment pieces 32 and 33. And a sleeve 300 penetrating therethrough. Further, as shown in FIG. 16, the sleeve 300 is mounted in the gap S <b> 1 between the facing portions 12 b and 13 b of the pair of outer plates 12 and 13. Here, the intermediate portion of the sleeve 300 penetrating the attachment pieces 32 and 33 is welded to the attachment pieces 32 and 33. As shown in FIG. 5, the sleeve 300 and the opposing portions 12 b and 13 b of the pair of outer plates 12 and 13 are connected by connecting members (37 and 38).

<< Operation by the configuration of the bosses 32a and 33a >>
According to this configuration, the bosses 32 a and 33 a of the attachment pieces 32 and 33 are constituted by the sleeve 300 that penetrates the attachment pieces 32 and 33. For this reason, it is easy to change the thickness of the attachment pieces 32 and 33 and the sleeve 300. For example, the sleeve 300 can be easily formed thicker than the mounting pieces 32 and 33. Further, since the bosses 32a and 33a are constituted by the sleeve 300 penetrating the mounting pieces 32 and 33, the bosses 32a and 33a can easily have a required strength. For example, the mounting pieces 32 and 33 can be inserted into the block-shaped member with holes as a block-shaped member that can be accommodated in the facing portions of the pair of outer plates 12 and 13. Compared to this, the structure of the bosses 32a and 33a proposed here can reduce the weight and ensure the required strength. Thus, according to this configuration, in the configuration in which the first transmission member 30 and the pair of outer plates 12 and 13 are connected, it is easy to reduce the weight while ensuring the required strength. Further, since the sleeve 300 is passed through the mounting pieces 32 and 33, the linearity of the bosses 32a and 33a on both sides of the mounting pieces 32 and 33 can be maintained, and the first transmission member 30 and the pair of outer plates 12 and 13 can be maintained. Can be assembled with high accuracy. Thereby, shear deformation can be appropriately generated in the viscoelastic bodies 15 and 16.

  Further, the shaft member 37 can be passed through the sleeve 300, and the shaft member can be locked to the facing portions 12 b and 13 b of the pair of outer plates 12 and 13 by the locking member 38. In this case, the shaft member 37 passed through the sleeve 300 is received by the inner peripheral surface of the sleeve 300. In the vibration control device 100, a large reaction force against the shear deformation of the viscoelastic bodies 15 and 16 acts on the inner peripheral surface of the sleeve 300 and the shaft member 37 during an earthquake. At this time, the shaft member 37 is received in a wide area by the inner peripheral surface of the sleeve 300. For this reason, damage to the shaft member 37 and the sleeve 300 is avoided. Thereby, shear deformation can be appropriately generated in the viscoelastic bodies 15 and 16 during an earthquake.

  In this embodiment, the opposing portions 12b and 13b of the pair of outer plates 12 and 13 are provided on both sides of the adhesive portions 12a and 13a, respectively, and the attachment pieces 32 and 33 and the sleeve 300 (the boss 32a, 33a) is accommodated in the opposing portions 12b and 13b on both sides. The mounting pieces 32 and 33 housed in the opposing portions 12b and 13b on both sides are integrally supported by the base 31, respectively. For this reason, the space | interval of the attachment pieces 32 and 33 is maintained, and shear deformation can be appropriately produced in the viscoelastic bodies 15 and 16 with respect to the relative displacement of the intermediate plate 14 with respect to the pair of outer plates 12 and 13. Thereby, the vibration control device 100 can more appropriately exhibit the damping function.

<< Summary of other damping device 100 >>
For example, as shown in FIGS. 2 to 5, the proposed vibration damping device 100 includes opposed plates 12, 13, 14, viscoelastic bodies 15, 16, a first transmission member 30, and a second transmission member. And a transmission member 40. Here, the plate 14 to which at least one of the first transmission member 30 and the second transmission member 40 (the second transmission member 40 in the illustrated example) is connected includes the flange 17 orthogonal to the plate 14. ing.

  The transmission member 40 connected to the plate 14 includes braces 41 and 42 and a mounting plate 46. The braces 41 and 42 extend along a virtual plane A parallel to the opposing plates 12, 13, and 14. One end of each of the braces 41 and 42 is opposed to the flange 17, and a side surface of the end portion in a direction orthogonal to the virtual plane A is recessed. Further, the mounting plate 46 has a fixed portion 46a fixed to the flange 17 and a pair of mounting pieces 46b and 46c extending from the fixed portion 46a. Here, the pair of mounting pieces 46b and 46c are formed by concave portions 41a and 42a of the braces 41 and 42 and surfaces opposite to the concave portions 41a and 42a (surfaces on the opposite side in the direction perpendicular to the virtual surface A). ).

  According to such a vibration control device, portions 41 a and 42 a that are recessed on the side surfaces of the braces 41 and 42 are provided in a direction orthogonal to the virtual plane A parallel to the opposing plates 12, 13, and 14. And the attachment pieces 46b and 46c of the attachment plate 46 are joined to the recessed parts 41a and 42a of the side surfaces of the braces 41 and 42. In this case, the thickness of the portion where the attachment pieces 46b and 46c of the attachment plate 46 are joined can be reduced by the amount by which the side surfaces of the braces 41 and 42 are recessed. For this reason, the damping device 100 is thinly configured in the part. Further, since the mounting pieces 46b and 46c of the mounting plate 46 are joined to the recessed portions 41a and 42a on the side surfaces of the braces 41 and 42, the required strength is ensured at the corresponding portions.

  Here, as described above, the braces 41 and 42 may be hollow shaft members. In this case, the required strength is ensured in the recessed portions 41a and 42a of the braces 41 and 42 by making the thickness of the mounting pieces 46b and 46c thicker than the thickness of the braces 41 and 42. That is, when the braces 41 and 42 are hollow shaft members, it is difficult to increase the thickness of part of the braces 41 and 42. For this reason, it is difficult to increase the thickness of the braces 41 and 42 only at the portions where the braces 41 and 42 are recessed. On the other hand, it is easy to ensure the required strength by increasing the thickness of the attachment pieces 46b, 46c joined to the braces 41, 42.

  Moreover, generally, the site | part which joins the attachment pieces 46b and 46c of the attachment plate 46, and the braces 41 and 42 tends to become thick. On the other hand, according to the vibration control device 100 proposed in the present application, in the direction orthogonal to the virtual plane A, the attachment pieces 46b and 46c and the braces 41 and 42 in the portion where the attachment pieces 46b and 46c are joined. The combined thickness can be made thinner than other parts of the braces 41 and 42. By thinning the part in this way, for example, as shown in FIG. 1, the notch 81 of the stud 80 can be reduced when the stud 80 is attached.

  Further, a pressing member 47 disposed on the opposite side of the flange 17 with respect to the fixing portion 46 a of the mounting plate 46 and fastened to the flange 17 may be provided. In this case, the attachment plate 46 can be more firmly fixed by attaching the pressing member 47. Further, the recessed portions 41 a and 42 a of the braces 41 and 42 may be provided on both side surfaces in the direction orthogonal to the virtual plane A. In this case, the attachment plate 46 can be attached to the braces 41 and 42 in a well-balanced manner. Furthermore, the vibration control unit 10 can be arranged in a balanced manner with respect to the braces 41 and 42. In this case, more preferably, the amount of depression of the braces 41 and 42 on the side surfaces on both sides in the direction orthogonal to the virtual plane A is the same.

  Moreover, the brace may have two braces 41 and 42 in which the distance from each other gradually increases as the distance from the flange 17 increases. Further, at least one of the pair of attachment pieces 46b and 46c may be provided with notches 46b1 and 46c1 between the two braces 41 and 42. With this configuration, for example, when attaching the studs 80, the notches of the studs 80 can be reduced, and the strength of the studs 80 is easily secured.

  Further, in this case, the first transmission member 30 and the second transmission member 40 may be provided with a stud 80 that is disposed vertically and disposed between the two braces 41 and 42 in the vertical direction. Here, the notch 81 is formed in the region where the intermediate pillar 80 has the plates 12, 13, 14, the first transmission member 30, the second transmission member 40, and the mounting pieces 46 b, 46 c facing each other in the vertical direction. Good. Further, in this case, the pair of mounting pieces 46b and 46c of the mounting plate 46 are preferably formed with notches 46b1 and 46c1 between the two braces 41 and 42, respectively. In this case, the notches 81 of the studs 80 can be reduced, and the strength of the studs 80 is easily secured.

  As described above, the vibration control device 100 proposed here is suitable as a device that suppresses vibration generated in the building 200 and attenuates it at an early stage. In addition, as a structure with fireproof performance conforming to the quasi-fireproof structure stipulated in the Building Standards Act, a seismic control wall structure (wall structure that suppresses vibration generated in the building and attenuates it early) is installed. it can. Note that the proposed vibration control device is not limited to any of the above-described embodiments and modifications thereof unless otherwise specified.

  Heretofore, the vibration control device 100 according to the embodiment of the present invention has been described. The vibration control device 100 is not limited to the above-described embodiment.

  For example, in the above-described embodiment, the example in which the vibration control device 100 is attached to the first floor of the building 200 is illustrated, but the vibration control device 100 may be attached to two or more floors of the building 200. In the above-described embodiment, the vibration control device 100 has exemplified the form in which the vibration energy is absorbed by the viscoelastic bodies 15 and 16 of the vibration control unit 10, but the structure of the vibration control unit 10 is not limited to the above. The lids 83 and 84 attached to the notches 81 and 82 formed in the stud 80 may use the same wood as the stud 80, for example. The lids 83 and 84 may be hardware, for example.

10 Damping unit 12, 13 Outer plate 12a, 13a Adhesive part 12b, 13b Opposing part 14 Intermediate plate 15, 16 Viscoelastic body 17 Flange 18 Bolt 20 Nut 30 First transmission member (transmission member)
31 Base 31a Bolt hole 32, 33 Mounting piece 32a, 33a Boss 34, 35 Insertion hole 37 Bolt (shaft member (connection member))
38 Nut (locking material (connecting member))
40 Second transmission member (transmission member)
41 Brace 41a Recessed part 41b End part 42 of brace 41 Brace 42a Recessed part 42b End part 43, 44 Base part 43a, 44a Base part 43a1, 43a2, 43a3 Insertion hole 43b, 44b Flange part 43c Reinforcement plate 45 Bridge 46 Mounting plate 46a Fixed portion 46a1 Insertion hole 46b, 46c Mounting piece 46b1, 46c1 Notch 46b2, 46b3, 46c2, 46c3 Mounting portion 47 Holding member 50 Ceiling beam 50a Upper frame 60 Base 60a Lower frame 70a, 70b Column 80 Spacer 81, 82 Notches 81a, 82a Steps 83, 84 Lid 100 Damping device 105 Anchor bolt 106 Lag screw bolt 107 Foundation packing 200 Building 202 Concrete foundation 204 Rectangular frame 300 Sleeve A Virtual plane H Hysteresis -Loop

Claims (3)

An intermediate plate, a pair of viscoelastic bodies, a pair of outer plates, a transmission member, and a connecting member;
The pair of viscoelastic bodies is
Opposed across the intermediate plate and bonded to the intermediate plate,
The pair of outer plates is
Opposing both sides of the intermediate plate across the viscoelastic body,
An adhesive part adhered to the viscoelastic body;
The intermediate plate and the viscoelastic body, and provided with opposing portions facing each other,
The transmission member is
A first transmission member connected to the pair of outer plates;
A second transmission member connected to the intermediate plate,
The first transmission member is
An attachment piece extending between opposing portions of the pair of outer plates;
A sleeve penetrating the mounting piece,
The sleeve is mounted in the gap between the opposing portions of the pair of outer plates;
The intermediate part of the sleeve that penetrates the mounting piece is welded to the mounting piece,
The sleeve and the opposing portion of the pair of outer plates are connected by the connecting member,
Damping device. The opposing portions of the pair of outer plates are
Provided on both sides of the adhesive part,
The mounting piece and the sleeve of the first transmission member are
In the facing parts provided on both sides across the adhesive part, each is housed between the pair of outer plates,
The first transmission member is
A base for integrally supporting the mounting pieces respectively housed in the facing portions;
The vibration control device according to claim 1. The connecting member is
A shaft passed through the sleeve;
The seismic control device according to claim 1, further comprising a locking member that connects the shaft member to the facing portion.

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