JP6426973B2 - Vibration control equipment - Google Patents

Description

  The present invention relates to a vibration control system.

  The vibration control device attached to a building is disclosed, for example, in Japanese Patent Laid-Open No. 2009-293658. The seismic control apparatus of the same publication comprises a seismic control unit and a transmission mechanism for transmitting shear deformation generated in a building to the seismic control unit. The transmission mechanism includes an upper transmission member attached to the upper horizontal shaft (e.g., ceiling beam) of the building and a lower transmission member attached to the lower horizontal shaft (e.g., the base) of the building. The lower transmission member has two braces extending diagonally downward from the part connected to the vibration control unit so that the distance between them gradually increases, and the lower ends of the two braces are the foundations of the building. It is concluded.

JP, 2009-293658, A

  By the way, when an earthquake occurs, the lower transmission member of the vibration control device as described above receives a reaction force from the vibration control unit, and exerts a force to be pushed downward and a force to be pulled upward. The vibration control device having the above-mentioned configuration is, for example, a wooden frame construction method, a wooden frame wall construction method, etc., a base mounted on a concrete foundation of a building, a pair of columns mounted on the base, and a pillar Placed in a rectangular frame surrounded by ceiling beams erected on the And, ideally, it is desirable to fix the lower transmission member of the vibration control device to the anchor bolt embedded in the concrete foundation.

  By the way, depending on the construction method of the building, on the foundation installed on the concrete foundation of the building, members that compose the floor of the building such as joists, floor plywood and lower frame (here, the floors of these buildings are configured The members may be collectively referred to as "floor members". Here, the joists are, for example, members referred to as end joists and side joists. For example, when joists are placed on a foundation mounted on a concrete foundation of a building, the damping device is placed in a joist, a pair of columns, and a rectangular frame surrounded by ceiling beams. Ru. In this case, the base is attached to the anchor bolt embedded in the concrete foundation, the joist is attached on the base, and the vibration control member is attached thereon. And in order to attach the lower transmission member of a vibration control apparatus directly to the anchor bolt embedded in the concrete foundation, it is necessary to install an anchor bolt which penetrates a joist. However, long anchor bolts that penetrate the joists are expensive to procure because they are not usually used. In addition, if a long anchor bolt extends from the concrete foundation, installation of the foundation and joists becomes difficult, and it takes time and effort in construction. Moreover, even if a joist is not used, the structure for attaching the vibration control device is preferably a structure that can be performed at low cost and with simple work.

  The vibration control device proposed here includes a vibration control unit, an upper transmission member, a lower transmission member, a first fastening member, a sleeve, an extension bolt, and a second fastening member. Here, the building to which the vibration control device is attached has a base provided with an anchor bolt, a through hole through which the anchor bolt is inserted, and the base mounted on the base and fixed on the base Floor members are provided. The vibration control unit includes a vibration control member, and a pair of mounting portions attached to the vibration control member and inputting relative shear displacement to the vibration control member. The upper transmission member includes an upper fixing portion and a first unit fixing portion fixed to one of the pair of mounting portions of the vibration control unit. The lower transmission member includes a lower fixing portion and a second unit fixing portion fixed to the other of the pair of mounting portions of the vibration control unit. The lower fixing portion of the lower transmission member is disposed above the floor member above the anchor bolt. The first fastening member is attached to the upper end of the anchor bolt to fix the base to the base, and connects the upper end of the anchor bolt and the lower end of the extension bolt. The sleeve penetrates the floor member, has a length from the lower surface of the lower fixing portion to the first fastening member, and is in contact with the lower surface of the lower fixing portion and the first fastening member. The extension bolt passes through the inside of the sleeve, and the upper end of the extension bolt extends upward from the upper end of the sleeve. The second fastening member is attached to the upper end of the extension bolt and fixes the lower fixing portion to the floor member.

  According to this vibration control device, the lower fixing portion can be fixed via the sleeve and the extension bolt, and the compressive force and the tensile force received from the lower fixing portion can be transmitted to the base and the anchor bolt. In this case, it is not necessary to use a long anchor bolt which penetrates the floor member. That is, the anchor bolt may extend from the concrete foundation by a certain length. For this reason, when attaching a vibration control apparatus, construction effort can be reduced and cost reduction can be achieved.

  Here, the first fastening member may be a nut with a washer that connects the upper end of the anchor bolt and the lower end of the extension bolt. The lower fixing portion may have an insertion hole through which the upper end of the extension bolt is inserted, and may be attached to the upper end of the extension bolt inserted into the insertion hole. Also, the sleeve may be, for example, a steel pipe.

FIG. 1 is a front view showing a structure of a wall 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. As shown in FIG. FIG. 3 is an enlarged view of the vibration control unit 10. FIG. 4 is a right side view of FIG. FIG. 5 is a sectional view taken along the line V-V in FIG. FIG. 6 is a schematic view showing a state in which shear deformation acts on the vibration control unit. FIG. 7 is a schematic view of a hysteresis loop drawn by the vibration control unit 10. FIG. 8 is a bottom view of the upper transmission member 30. As shown in FIG. FIG. 9 is a front view of the lower transmission member. FIG. 10 is a sectional view taken along the line XX in FIG. FIG. 11 is a bottom view of the lower surface of the second unit fixing portion 47. As shown in FIG. FIG. 12 is a view showing a joint structure of the upper pipe and the lower pipe. FIG. 13 is a cross section taken along line XIII-XIII of FIG. FIG. 14 is an enlarged view of the base 43 on the left side. FIG. 15 is an enlarged view of a portion where the sleeve 46A provided on the left side base 43 is disposed. FIG. 16 is a perspective view of the washer nut 110. FIG. 17 is a view showing a state where 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. 18 is a view showing a state in which the ceiling beam 50 and the base 60 are relatively displaced in the horizontal direction in the direction opposite to that in FIG. FIG. 19 is a side view of the stud 80. FIG. 20 is a view showing an arrangement place of the heat insulating material. FIG. 21 is a front view showing a modification of the structure of the wall of the building 200 to which the vibration control device 100 is attached.

  Hereinafter, a vibration control device according to an embodiment of the present invention will be described based on the drawings. The present invention is not limited to the following embodiments. In addition, the same reference numerals are appropriately given to members or portions having the same function. Moreover, each drawing is drawn schematically and does not necessarily reflect an actual thing. Also, each drawing shows only one example, and does not limit the present invention unless otherwise stated.

<< Building 200 >>
FIG. 1 is a front view showing a structure of a wall of a building 200 to which a vibration control device 100 is attached. Here, the building 200 may be exemplified by, for example, a wooden frame construction method and a wooden house built by a framework method such as a frame wall method (also referred to as a two-by-four method).

  For example, in a so-called wooden frame construction method, a rectangular frame surrounded by a base, a pair of columns, and beams is constructed. Further, in the so-called frame wall construction method, for example, a wood frame is made of wood of a cross section of 2 inches × 4 inches or an integral multiple thereof, and a wall is assembled by nailing plywood or the like thereon. In the frame wall construction method, so-called 2 × 6, 2 × 10, 4 × 4, 2 × 8, etc. cross-section wood may be used, and it is not necessarily limited to wood 2 ′ ′ × 4 ′ ′ or its integral multiple cross-section It is not something to be done. The vibration control device proposed here can be attached to any of such a wooden frame construction method and a frame wall construction method. In this case, for a building built by such a frame wall method, it can be attached to a crate that constructs a wall. For example, the vibration control device 100 is attached to a rectangular frame surrounded by a shed frame corresponding to a pair of vertical members (posts), an upper frame corresponding to a pair of horizontal members, and a lower frame. In the frame wall construction method, although the stud described later is distinguished from a pair of vertical members (posts), it may be treated as a weir frame.

  In the building 200, the base 60 may be installed on the concrete foundation 202, and a pillar may be provided on the base 60. Also, on the base 60, a floor member 61 is disposed. In the example shown in FIG. 1, the anchor bolt 105 is provided on the concrete foundation 202. The base 60 has a through hole 60 a through which the anchor bolt 105 is inserted, and the anchor bolt 105 is inserted through the through hole 60 a and placed on the concrete foundation 202. As a fastening member for fixing the base 60 to the concrete foundation 202, for example, a nut attached to a screw groove cut at the upper end of the anchor bolt 105 can be mentioned. The floor member 61 is a member fixed on the base 60 and constituting a floor of a building. Here, the floor member 61 includes a joist 62, a floor plywood 64 and a lower frame 66. The joists 62 are fixed on the base 60, and the floor plywood 64 and the lower frame 66 are attached to the joists 62. The pillars 70 a and 70 b are attached to the floor member 61. In the example shown in FIG. 1, the building 200 includes a rectangular frame 204 surrounded by an upper frame 50a attached to the beam 50, a lower frame 66, and columns 70a and 70b. In this embodiment, the vibration control device 100 is provided in a rectangular framework 204 of such a building 200. In this embodiment, as shown in FIG. 1, the building 200 includes the joists 62, the floor plywood 64, and the lower frame 66 as the floor member 61, but the configuration of the floor member 61 is here It is not limited to what is mentioned.

"Damp control device 100"
The vibration control device 100 includes a pair of plates (12, 13), 14, an elastic member 15, 16, an upper transmission member 30, and a lower transmission member 40. Further, in this embodiment, as shown in FIG. 1, a stud 80 is attached. Here, FIG. 2 is a front view of the vibration control device 100. FIG. FIG. 3 is an enlarged view of the vibration control unit 10. FIG. 4 is a right side view of FIG. FIG. 5 is a sectional view taken along the line V-V in FIG. FIG. 6 is a schematic view showing a state in which shear deformation acts on the vibration control unit. FIG. 7 is a schematic view of a hysteresis loop drawn by the vibration control unit 10.

Control unit 10
Here, a preferred example of the vibration control unit 10 will be described. The damping unit 10 exemplified here is, as shown in FIGS. 3 to 5, a pair of plates (12, 12) in which relative displacement is input to the visco-elastic bodies 15, 16 and the visco-elastic bodies 15, 16. 13) and 14 are provided.

Plates 12, 13, 14>
Here, the pair of plates (12, 13) and 14 are steel plates each having a required rigidity. The pair of plates (12, 13), 14 are arranged such that the plates 12, 13 sandwich the plate 14 and face the plate 14. The plates 12 and 13 are substantially rectangular steel plates. In this embodiment, the plates 12 and 13 are curved lines in which one long side is bulging in an arc shape, and the plates 12 and 13 are arranged in parallel with the same direction. The plate 14 is rectangular. One longitudinal side of the plate 14 is disposed between the plate 12 and the plate 13. The opposite side of the plate 14 extends from one side of the plates 12 and 13 in a circular arc.

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

<Viscoelastic body 15, 16>
The visco-elastic bodies 15, 16 are disposed between the opposing plates 12, 13, 14 and bonded to the respective plates. In this embodiment, the visco-elastic bodies 15 and 16 are each formed in a rectangular flat plate shape. The visco-elastic bodies 15 and 16 are respectively disposed in a rectangular area where the plates 12, 13 and 14 overlap when viewed in the normal direction of the plates 12, 13 and 14. Here, the visco-elastic body 15 is disposed between the plate 12 and the plate 14 and bonded to each other. The visco-elastic body 16 is disposed between the plate 13 and the plate 14 and bonded to each other. The visco-elastic bodies 15, 16 are made of, for example, visco-elastic rubber (damping rubber) having high damping property. The visco-elastic bodies 15, 16 and the plates 12, 13, 14 are adhered by vulcanization bonding, respectively.

  In addition, as the viscoelastic rubber (vibration damping rubber) having high damping property used as the viscoelastic bodies 15 and 16, for example, natural rubber, styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), butadiene rubber material ( High damping property produced by adding an additive that exhibits high damping property to rubber materials of BR), isoprene rubber (IR), butyl rubber (IIR), halogenated butyl rubber (X-IIR) and chloroprene rubber (CR) A rubber composition can be used. As additives exhibiting high damping properties, various additives such as carbon black are known.

<Hysteresis loop H>
Here, in the vibration control unit 10, as shown in FIG. 6, when the plate 14 moves in parallel with respect to the plate 12 and the plate 13, shear deformation occurs in the viscoelastic bodies 15, 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 is understood that the shear load increases as the shear displacement increases, and the resistance of the viscoelastic bodies 15 and 16 increases. The visco-elastic bodies 15, 16 can absorb energy corresponding to the energy surrounded by the hysteresis loop H for each cycle when subjected to vibration accompanied by shear deformation.

  As described above, the vibration control unit 10 includes the visco-elastic bodies 15 and 16 and the pair of plates (12 and 13) and 14. Here, the visco-elastic bodies 15 and 16 function as vibration control members, and the plate (12, 13) and the plate 14 are a pair of attachment parts to which relative displacement is input to the visco-elastic bodies 15 and 16 Act as. Of the plates (12, 13) and the plate 14, the portions functioning as a pair of attachment portions are respectively provided at the portions protruding from the region where the pair of plates (12, 13) and the plate 14 overlap each other. Specifically, in the plate (12, 13), the insertion hole 22 formed at the relevant portion for inserting the bolt 37 (see FIGS. 3 and 5) functions as a mounting portion. Further, in the plate 14, a flange 17 provided at an end portion protruding from the area where the plates (12, 13) overlap (more specifically, an insertion for inserting the bolt 18 formed on the flange) The hole functions as an attachment.

  Here, the upper transmission member 30 is connected to the attachment portion of the plate 12 and the plate 13, and the lower transmission member 40 is connected to the attachment portion (flange 17) of the plate 14. Thereby, relative shear displacement (here, horizontal displacement of the beam 50 with respect to the base 60) generated in the beam 50 and the base 60 of the building 200 through the upper transmission member 30 and the lower transmission member 40 is a pair. It is transmitted to the plates (12, 13), 14. Then, a shear displacement corresponding to the shear displacement transmitted to the pair of plates (12, 13), 14 is input to the viscoelastic bodies 15, 16 as vibration control members.

  As mentioned above, the form which pinched | interposed the viscoelastic bodies 15 and 16 by the plates 12 and 13 and the plate 14 was demonstrated as a suitable example of the vibration control unit 10 here. In this case, the visco-elastic bodies 15 and 16 function as vibration control members, and the plate (12, 13) and the plate 14 are a pair of attachment parts to which relative displacement is input to the visco-elastic bodies 15 and 16 Act as. The vibration control unit 10 converts the shear displacement of the plates 12 and 13 and the plate 14 into shear deformation of the viscoelastic bodies 15 and 16 to absorb energy that causes shear deformation. On the other hand, the vibration control unit 10 is not limited to such a form, and may be, for example, a piston cylinder type damper. However, from the viewpoint that the entire apparatus can be made thin, it is preferable that the plate-like viscoelastic body be sandwiched between a pair of plates as described above.

<< upper transmission member 30, lower transmission member 40 >>
In this embodiment, the vibration control unit 10 is attached to the building 200 via the upper transmission member 30 and the lower transmission member 40. The upper transmission member 30 and the lower transmission member 40 are attached to the upper frame 50 a and the lower frame 66 of the building 200, and transmit shear displacement generated in the building 200 to the vibration control unit 10. Hereinafter, the upper transmission member 30 and the lower transmission member 40 will be described.

<< upper transmission member 30 >>
The upper side transmission member 30 is provided with the upper side fixing | fixed part 31 and the 1st unit side fixing | fixed part 32 and 33, as shown in FIG. The upper fixing portion 31 is a portion fixed to the beam 50 (here, the upper frame 50 a) of the building 200. The first unit side fixing parts 32 and 33 are parts fixed to one of the pair of mounting parts of the vibration control unit 10. In this embodiment, the upper transmission member 30 is a member connected to one plate (12, 13) and the beam 50 of the pair of opposing plates (12, 13), 14 of the vibration control unit 10 is there. In this embodiment, the upper transmission member 30 includes a base 31 that functions as the upper fixing portion 31 and attachment pieces 32 and 33 that function as the first unit side fixing portions 32 and 33.

<Base 31 (upper fixing portion)>
FIG. 8 is a bottom view of the upper transmission member 30 (a view from below when attached to the upper frame 50a). In this embodiment, as shown in FIG. 8, the base 31 is a substantially rectangular plate-like member longer than the plates 12, 13 of the vibration control unit 10, and is attached to the upper frame 50a. The mounting pieces 32 and 33 are rectangular plate members shorter than the base 31, and are provided on the base 31. The mounting pieces 32 and 33 are portions to which the plates 12 and 13 of the vibration control unit 10 are attached, and are attached at an intermediate portion of the base 31 at a predetermined interval. Moreover, the width of the base 31 is narrowed between the portions where the mounting pieces 32 and 33 are provided. The intermediate portion of the mounting pieces 32 and 33 provides a space for disposing the end of the stud 80 when the stud 80 is attached. The base 31 further extends on both sides from the portion where the mounting pieces 32 and 33 are provided. The bolt holes 31 a attached to the upper frame 50 a are formed in the both side portions.

<Mounting pieces 32, 33>
Here, the mounting pieces 32 and 33 align the short sides of the mounting pieces 32 and 33 in the length direction of the base 31 at the central portion in the width direction of the base 31 and make them orthogonal to the base 31 and from the base 31 It is provided to project. As shown in FIG. 1, the base 31 is attached to the lower surface of the upper frame 50a with its length direction aligned with the length direction of the upper frame 50a. The mounting pieces 32, 33 extend downward from the base 31 mounted on the lower surface of the upper frame 50a. The base 31 and the mounting pieces 32, 33 have a required rigidity. The distance between the mounting pieces 32 and 33 is set so that the plate 14 and the viscoelastic bodies 15 and 16 of the vibration control unit 10 are sufficient to be accommodated, and to be attached to both sides in the longitudinal direction of the plates 12 and 13 respectively. It is done. The plates 12 and 13 are attached to the attachment pieces 32 and 33, respectively. Bosses 32a and 33a for inserting the bolts 37 are respectively provided at portions where the plates 12 and 13 are attached.

<Mounting of Upper Transmission Member 30 and Upper Frame 50a>
The upper transmission member 30 is disposed along the lower surface of the upper frame 50a in the rectangular frame 204 of the building 200, as shown in FIG. The upper transmission member 30 is fixed at a predetermined position of the upper frame 50a by a fastener (for example, a lag screw bolt or screw) attached to a bolt hole 31a (see FIG. 8) formed in the base 31. Ru.

<Mounting of Plates 12, 13 and Upper Transmission Member 30>
In this embodiment, as shown in FIGS. 2 and 5, the plate 14 and the visco-elastic members 15, 16 of the vibration control unit 10 are disposed between the attachment pieces 32, 33 of the upper transmission member 30. The plates 12 and 13 are attached to the attachment pieces 32 and 33 of the upper transmission member 30. The distance between the attachment pieces 32 and 33 of the upper transmission member 30 is such that the plate 14 and the visco-elastic bodies 15 and 16 can be sufficiently contained in consideration of the amount of deformation of the visco-elastic bodies 15 and 16.

  Bosses 32a and 33a are accommodated in the gaps between the mounting pieces 32 and 33 and the plates 12 and 13, respectively. The bosses 32a, 33a of the mounting pieces 32, 33 have insertion holes 34, 35, respectively. The mounting pieces 32, 33 and the plates 12, 13 are aligned with each other in the insertion holes 22, 34, 35 (see FIGS. 6 and 8). Then, the mounting pieces 32 and 33 and the plates 12 and 13 are joined by inserting the bolt 37 into the insertion holes 22, 34 and 35 and fastening the nut 38 (see FIG. 4). Here, the bosses 32a, 33a keep the spacing between the plates 12, 13 appropriately. Further, the plate 14 contacts the mounting pieces 32, 33 and the bosses 32a, 33a when an excessively large deformation is input to the viscoelastic bodies 15, 16. Therefore, the mounting pieces 32, 33 and the bosses 32a, 33a can function as stoppers for restricting the viscoelastic bodies 15, 16 from being deformed excessively.

<< lower transmission member 40 >>
FIG. 9 is a front view of the lower transmission member 40. FIG. FIG. 10 is a sectional view taken along the line XX in FIG. The lower transmission member 40 is, as shown in FIGS. 9 and 10, a lower fixing portion (in this embodiment, bases 43 and 44 in this embodiment), a second unit fixing portion 47, and an intermediate member (in this embodiment) , Braces 41, 42). In this embodiment, the lower transmission member 40 is a member connected to the other plate 14 of the pair of opposing plates (12, 13) and 14 of the vibration control unit 10 and the lower frame 66.

Second Unit Fixing Section 47
Here, the second unit side fixing portion 47 is a portion fixed to the other mounting portion of the pair of mounting portions of the vibration control unit 10. In this embodiment, as shown in FIG. 3, the second unit fixing portion 47 is a portion fixed to the plate 14 of the vibration control unit 10. The end of the plate 14 is provided with a flange 17 so as to be orthogonal to the plate 14 as described above. The flange 17 is an elongated rectangular plate longer than one end of the plate 14. Insertion holes (not shown) through which the bolts 18 are inserted are formed at both ends of the flange 17. The second unit fixing portion 47 is an elongated rectangular plate like the flange 17 of the plate 14 (see FIG. 11). Insertion holes 47 a for inserting the bolts 18 are formed at both ends of the second unit fixing portion 47 at the same intervals as the insertion holes formed in the flange 17. As shown in FIG. 3, the second unit fixing portion 47 is superimposed on the flange 17 of the plate 14 so that the positions of the insertion holes are aligned with each other. The second unit side fixing portion 47 is fixed to the flange 17 by attaching the bolt 18 to the insertion hole 47 a aligned in the insertion hole of the flange 17 and fastening with the nut 20. Braces 41 and 42 as intermediate members are connected to the second unit fixing portion 47.

<Brace 41, 42 (intermediate member)>
Here, the intermediate member extends between the second unit side fixing portion 47 and the base portions 43 and 44 as the lower side fixing portion, and connects the second unit side fixing portion 47 and the base portions 43 and 44. In this embodiment, the braces 41 and 42 as intermediate members are shaft members. The intermediate member is a member that extends between the second unit side fixing portion 47 and the bases 43 and 44 as the lower side fixing portion, and connects the second unit side fixing portion 47 and the bases 43 and 44. Well, it is not limited to shafts such as the braces 41, 42 illustrated here.

<Joining part of braces 41 and 42 and second unit side fixing part 47>
In this embodiment, the upper ends of the braces 41 and 42 as the intermediate members are joined to the lower surface 47 b of the second unit fixing portion 47. Ribs 48 are provided at corner portions where the upper ends of the braces 41 and 42 and the lower surface 47 b of the second unit side fixing portion 47 are joined. Here, the rib 48 is a side surface of the upper end portion of the braces 41 and 42 facing the direction Y (see FIG. 2) of the shear displacement input to the viscoelastic bodies 15 and 16 as vibration control members, and the second unit side It is bridged with the lower surface 47 b of the fixing portion 47. The rib 48 is joined to the side surface of the upper end portion of the braces 41 and 42 and the lower surface 47 b of the second unit fixing portion 47.

  In this case, since the rib 48 is provided at the corner where the upper ends of the braces 41 and 42 and the lower surface 47 b of the second unit side fixing part 47 are joined, the braces 41 and 42 and the second unit side fixing part 47 It is possible to reinforce the joint portion with and to secure the required strength at the relevant site. Furthermore, the side surfaces on which the ribs 48 and 49 are provided with respect to the braces 41 and 42 are surfaces facing in the direction Y (see FIG. 2) of the shear displacement input to the viscoelastic bodies 15 and 16 as vibration control members. . The ribs 48 and 49 are joined to the side surfaces of the upper end portions of the braces 41 and 42 and the lower surface 47 b of the second unit fixing portion 47. Therefore, the upper ends of the braces 41 and 42 in the direction (here, the thickness direction of the rectangular frame 204) orthogonal to the shear displacement direction Y and the vertical direction X (see FIG. 2) input to the vibration control unit 10 The thickness of the joint between the part and the second unit side fixed part 47 can be reduced. For this reason, in the vibration control device 100, it is possible to make the junction thin while securing strength required for the junction. And while contributing to making the damping device 100 whole thin, it can thin also about the part to which the stud 80 mentioned later is attached.

  Here, FIG. 11 is a bottom view of the lower surface 47 b of the second unit side fixing portion 47. Here, the braces 41 and 42 and the ribs 48 and 49 joined to the lower surface 47 b of the second unit side fixing portion 47 are shown in cross section. The outer peripheral edge of the end face of the braces 41 and 42 and the ribs 48 and 49 joined to the lower surface 47 b of the second unit side fixed portion 47 is joined to the lower surface 47 b of the second unit side fixed portion 47. An arrow W1 is attached to the junction site.

  In this embodiment, the braces 41, 42 are more particularly pipe-like members, as shown in FIG. The upper ends of the braces 41 and 42 are brought into contact with the lower surface 47 b of the second unit side fixing portion 47 and welded. Further, the upper ends of the braces 41 and 42 applied to the lower surface 47 b of the second unit side fixed portion 47 are welded all around. Thereby, the welding places of braces 41 and 42 and the 2nd unit side fixed part 47 are secured widely. Here, the outer peripheral edge of the upper end of the braces 41 and 42 and the lower surface 47 b of the second unit side fixing portion 47 are welded all around.

  Furthermore, in this embodiment, the braces 41 and 42 are square pipes, and are joined to the second unit side fixing portion 47 with the pair of opposing side faces in the direction Y of shear displacement (see FIG. 3). . By making the braces 41 and 42 into square pipes, the second unit side fixed portion while making the braces 41 and 42 thinner in the thickness direction of the rectangular frame 204 as compared to the case where the braces 41 and 42 are round pipes. It is possible to secure a wide bonding area with the lower surface 47b of 47.

  Also, here, two braces 41 and 42 are provided as braces. The upper ends of the two braces 41 and 42 are spaced apart from each other on the lower surface 47 b of the second unit fixing portion 47 as shown in FIG. 3. The rib 48 is disposed between the two braces 41 and 42, and is joined to the upper end of the two braces 41 and 42 and the lower surface 47b of the second unit fixing portion 47, respectively. Here, the rib 48 is a steel plate cut out so as to conform to a region surrounded by the lower surface 47 b of the second unit side fixing portion 47 and the upper end portions of the two braces 41 and 42. And it is fitted in the field surrounded by undersurface 47b of the 2nd unit side fixed part 47, and the upper end part of two braces 41 and 42. The peripheral edge of the rib 48 is in contact with the inner side surface of the upper end of the two braces 41 and 42 and the lower surface 47 b of the second unit side fixing portion 47 with the lower surface 47 b of the second unit side fixing portion 47 And the upper ends of the two braces 41, 42 respectively. By mounting the rib 48, the lower surface 47b of the second unit side fixing portion 47 and the upper ends of the two braces 41 and 42 can be firmly joined.

  Further, in this embodiment, ribs 49 are also provided outside the two braces 41 and 42. Here, the rib 48 is provided on the outside of both of the two braces 41 and 42 in the direction Y of the shear displacement described above. The rib 49 is a steel plate cut out so as to conform to the lower surface 47 b of the second unit side fixing portion 47 and the side surface of the brace 41 or the upper end of the brace 42 on the outside of both the braces 41 and 42. It is. And it is fitted so that the undersurface 47b of the 2nd unit side fixed part 47 and the side of the upper end of brace 41 or brace 42 may be met on the outside of both braces 41 and 42, respectively. The periphery of the rib 49 is welded to the lower surface 47 b of the second unit side fixing portion 47 and the side surface of the brace 41 or the upper end of the brace 42. As a result, the joint strength between the lower surface 47 b of the second unit side fixing portion 47 and the upper end portion of the brace 41 or the brace 42 can be secured on the outside of both the two braces 41 and 42. Then, the lower surface 47 b of the second unit side fixing portion 47 and the upper ends of the two braces 41 and 42 can be firmly joined.

  Thus, the ribs 48 and 49 may be members made of steel plates. In this case, the ribs 48 and 49 can be made thin and the required strength can be secured. The ribs 48 and 49 may be respectively welded to the braces 41 and 42 and the second unit fixing portion 47 as described above. According to welding, stronger strength can be secured. In addition, since the joint between the braces 41 and 42 and the second unit side fixed portion 47 is fixed and does not move, the lower transmission member 40 can transmit more appropriate relative displacement to the vibration control unit 10. That is, compared with the case where the joint between the braces 41 and 42 and the second unit side fixed part 47 is jointed by a joint means such as a bolt and nut, the movement of the joint does not occur, so the lower transmission member 40 Can transmit appropriate relative displacement to the vibration control unit 10.

<Structure of braces 41 and 42>
Next, the structure of the braces 41, 42 in this embodiment will be described in more detail.

  In this embodiment, the braces 41, 42 are composed of two braces in which the spacing between the braces 41, 42 gradually increases as they move away from the flange 17 as shown in FIG. Further, a bridge 45 which is bridged between the braces 41 and 42 is attached to the middle of the braces 41 and 42 in the longitudinal direction. In this embodiment, the bridge 45 is formed of a square pipe, and both ends thereof are joined to the side surfaces of the two braces 41 and 42. Here, the bridge 45 is welded and fixed to the two braces 41 and 42, respectively. Although one bridge 45 is provided in the illustrated example, a plurality of bridges 45 may be provided between the braces 41 and 42. In this embodiment, the bridge 45 is a hollow member, which secures the required strength and achieves weight reduction. In addition, by welding and fixing the two ends of the bridge 45 to the two braces 41 and 42, the distance between the two braces 41 and 42 can be firmly secured. Further, in this case, as described above, in accordance with the joint between the two braces 41 and 42 and the second unit side fixing portion 47 being welded, the space between the two braces 41 and 42 is bridged. The bridge 45 is welded to the two braces 41, 42. Therefore, the rigidity of the lower transmission member 40 is high, and the lower transmission member 40 can transmit a more appropriate relative displacement to the vibration control unit 10.

  Furthermore, in this embodiment, as shown in FIGS. 9 and 10, the braces 41 and 42 have a structure in which the upper ends of the lower pipes 41B and 42B and the lower ends of the upper pipes 41A and 42A are joined. . Here, the upper pipes 41A, 42A are thin pipes that can be inserted into the lower pipes 41B, 42B. The lower ends of the upper pipes 41A and 42A are inserted into the upper ends of the lower pipes 41B and 42B and joined.

  FIG. 12 shows the connection structure between the upper pipe 41A and the lower pipe 41B for the left brace 41. 13 is a cross-sectional view taken along line XIII-XIII of FIG. The right brace 42 has a similar structure.

  The upper pipe 41A and the lower pipe 41B, as shown in FIGS. 12 and 13, are square pipes having a rectangular cross section. In this embodiment, the lower portion of the upper pipe 41A is inserted into the lower pipe 41B. Then, in a state where they overlap each other, the upper end edge 41Ba of the lower pipe 41B and the outer peripheral surface of the upper pipe 41A are welded over the entire circumference of the pipes 41A, 41B. P1 in FIG. 12 indicates the welding portion.

  Further, at a portion where the upper pipe 41A is inserted into the lower pipe 41B, a hole 41Bb is formed on the outer peripheral surface of the lower pipe 41B. The lower pipe 41B and the upper pipe 41A are formed by welding the inner peripheral edge of the hole 41Bb of the lower pipe 41B and the outer peripheral surface of the upper pipe 41A. P2 in FIG. 12 indicates the welding portion.

  Furthermore, in this embodiment, the holes 41Bb of the lower pipe 41B are formed in each of the four side surface portions 41Bc that constitute the square pipe. The inner peripheral edge of the hole 41Bb formed in each side surface portion 41Bc and the outer peripheral surface of the upper pipe 41A are respectively welded. P2 in FIG. 13 indicates the welding portion.

  In the illustrated example, one hole 41Bb is provided in the side surface portion 41Bc, but a plurality of holes 41Bb may be provided in each of the side surface portions 41Bc of the lower pipe 41B. Moreover, although the case where a joining means is welding is illustrated in this embodiment, it is not limited to this. For example, the upper pipe 41A and the lower pipe 41B may be joined by adhesion.

  In this embodiment, and at the opposite end, a base 43, 44 is provided. The bases 43, 44 are portions attached to the rectangular frame 204 (in this embodiment, the lower frame 66). In this embodiment, base portions 43 and 44 are provided independently on the left and right braces 41 and 42, respectively.

<Bases 43 and 44 (lower fixing portion)>
Next, the bases 43 and 44 as the lower fixing portion will be described. FIG. 14 illustrates the left base 43. As shown in FIG. 9, the right side base 44 also has the same structure as the left side base 43. As shown in FIGS. 9 and 14, the bases 43 and 44 include base portions 43a and 44a and flange portions 43b and 44b. The base portions 43 a and 44 a are portions attached along the lower frame 66. The base portions 43a and 44a face the lower ends 41b1 and 42b1 of the braces 41 and 42 on the lower side of the lower ends 41b and 42b of the braces 41 and 42, respectively. The flanges 43b and 44b rise from the bases 43a and 44a. Further, the flange portions 43b and 44b are provided on both sides of the base portion 43a so as to sandwich the lower end portions 41b and 42b of the braces 41 and 42, respectively. In FIG. 14, the flange portion 43b on the front side of the base portion 43a is partially cut away, and the flange portion 43b on the back side is illustrated. The lower ends 41b and 42b of the braces 41 and 42 are respectively welded to the front and rear flanges 43b and 44b.

  In the base portions 43a and 44a of the bases 43 and 44, insertion holes for inserting fasteners (for example, bolts (in the example shown in FIG. 1, the lag screw bolts 106)) for fastening with the lower frame 66. 43a2 and 44a2 are provided. Although the reinforcing plates 43c and 44c are attached to the base portion 43a in the illustrated example, for example, the reinforcing plates 43c and 44c are not attached when the required strength is secured to the base portion 43a. It is also good.

  Further, in this embodiment, the lower ends 41b and 42b of the two braces 41 and 42 are disposed apart from each other. The anchor bolts 105 are attached to the base portions 43a and 44a of the bases 43 and 44 outside the portion where the lower ends 41b and 42b of the two braces 41 and 42 are joined to the flange portions 43b and 44b. That is, the anchor bolt 105 is attached to the base portions 43a and 44a at the outside of the lower end portions 41b and 42b of the two braces 41 and 42 arranged apart from each other. The base portions 43a and 44a are disposed at lower ends 41b and 41b of the two braces 41 and 42, respectively, than the portions where the lower ends 41b and 42b of the two braces 41 and 42 are joined to the flange portions 43b and 44b. It extends long inside 42b. In this case, when the lower transmission member 40 transmits a shear displacement, a large force is applied to a portion near the portion where the anchor bolt 105 is attached, and a portion near the lower ends 41b and 42b of the two braces 41 and 42. Works. On the other hand, the lower end portions 41b and 42b of the two braces 41 and 42 arranged apart are farther from the lower end portions 41b and 42b of the two braces 41 and 42 and the anchor bolt 105, and the base portion The force acting on 43a, 44a is small.

  Therefore, the base portions 43a and 44a can be stably attached to the lower frame 66 as the base portions 43a and 44a are extended to the inside of the lower end portions 41b and 42b of the two braces 41 and 42 arranged separately. it can. And when the base portions 43a and 44a are extended long inside the lower end portions 41b and 42b of the two braces 41 and 42 which are separately disposed as described above, the base portions 43a and 44a act on the inner sides as they are inside. The force acting on the flanges 43b and 44b is small. Therefore, the heights of the flanges 43b and 44b may be reduced toward the inner side.

  That is, in this embodiment, the flanges 43b and 44b are high at the portions attached to the lower ends 41b and 42b of the two braces 41 and 42 arranged apart from each other. As a result, it is possible to ensure a wide area in which the lower ends 41b and 42b of the two braces 41 and 42 are welded to the flanges 43b and 44b. On the other hand, the flanges 43b and 44b are gradually lowered toward the inside of the two braces 41 and 42 disposed apart from each other. As the force acting on the flanges 43b and 44b is smaller toward the inside of the two braces 41 and 42 arranged apart, the required rigidity should be secured even if the flanges 43b and 44b are lowered at the relevant portions. Can. In addition, since the insides of the flange portions 43 b and 44 b are gradually lowered as described above, the weight of the bases 43 and 44 (the lower transmission member 40) can be reduced.

<Anchor bolt 105>
As shown in FIG. 1, in this embodiment, the building 200 to which the vibration control apparatus 100 is attached includes a foundation (here, a concrete foundation 202), a foundation 60, and a joist 62 as a floor member 61. There is. Here, the anchor bolt 105 is provided on the concrete foundation 202. The anchor bolt 105 is provided in advance on the concrete foundation 202 in accordance with the position where the bases 43 and 44 as the lower fixed portion of the vibration control device 100 are disposed. FIG. 15 is an enlarged view of a structure in which the left base 43 is attached to the lower frame 66. As shown in FIG. Although the illustration is omitted, the right side base 44 is attached to the lower frame 66 in the same structure as the left side base 43. As shown in FIG. 15, the vibration control device 100 further includes a first fastening member 110, a sleeve 46A, an extension bolt 46B, and a second fastening member 46C.

  Here, as shown in FIG. 15, the base 60 has a through hole 60a through which the anchor bolt 105 is inserted. Then, the base 60 is placed on the concrete foundation 202 with the anchor bolt 105 penetrating through the through hole 60 a. The anchor bolt 105 may be inserted through the through hole 60 a of the base 60, and the through hole 60 a may have an inner diameter slightly larger than the outer diameter of the anchor bolt 105. The base 60 is fixed to the concrete foundation 202 and the anchor bolt 105 by a first fastening member 110 attached to the anchor bolt 105. The bases 43 and 44 of the lower transmission member 40 are disposed above the floor member 61 (above the lower frame 66 in the example shown in FIG. 1) above the anchor bolt 105, as shown in FIG. .

<First Fastening Member 110>
The first fastening member 110 is a member attached to the upper end of the anchor bolt 105 to fix the base 60 to the concrete foundation 202. Furthermore, the first fastening member 110 connects the upper end portion of the anchor bolt 105 and the lower end portion of the extension bolt 46B. Here, as the first fastening member 110, a nut with a washer which is attached to the upper end 46B1 of the anchor bolt 105 as shown in FIG. 16 is used. FIG. 16 is a perspective view of the washer nut 110.

  In this embodiment, as shown in FIG. 16, the washer-attached nut 110 (first fastening member) includes a washer 112, a nut 114, and a sleeve 116. Here, the washer portion 112 has an outer diameter larger than the inner diameter of the through hole 60 a formed in the base 60. The nut portion 114 is fixedly provided on the upper surface of the washer portion 112. The sleeve portion 116 is provided on the lower surface of the washer portion 112. In this embodiment, a through hole 118 communicating the nut portion 114 and the sleeve portion 116 is formed. In the through hole 118, a female screw groove attached to the upper end of the anchor bolt 105 is formed. The washer nut 110 can be, for example, an anchor bolt and a joint washer generally used as a construction material for a wooden house connecting the hole down bolt.

  In this embodiment, as shown in FIG. 15, the base 60 is placed on the concrete base 202 through the anchor bolt 105 in the through hole 60a formed in the base 60. Then, a washer nut 110 is attached to the upper end of the anchor bolt 105 to fix the base 60 to the concrete foundation 202. A counterbore may be formed on the upper surface of the base 60 to attach a washer nut 110 attached to the upper end of the anchor bolt 105.

  Here, the length of the anchor bolt 105 is adjusted so that the upper end of the anchor bolt 105 reaches the middle portion of the through hole 118 of the washer nut 110 but does not penetrate the through hole 118. In addition to adjusting the length of the anchor bolt 105, or in addition to adjusting the length of the anchor bolt 105, the depth of the counterbore formed on the base 60 may be adjusted, or the required length may be A washer nut 110 having a sleeve portion 116 may be used. The upper end of the anchor bolt 105 extends to an intermediate portion of the through hole 118 of the washer nut 110, but the anchor bolt 105 does not penetrate the through hole 118 of the washer nut 110. For this reason, there is a space in the screw groove at the upper portion of the through hole 118 of the washer nut 110, and the lower end portion of the extension bolt 46B is connected to that portion. Thus, in this embodiment, the washer nut 110 as the first fastening member is attached to the upper end of the anchor bolt 105 to fix the base 60 to the concrete foundation 202, and the upper end of the anchor bolt 105 And the function of connecting the lower end of the extension bolt 46B.

<Floor member 61>
The floor member 61 is a member fixed on the base 60 and constituting a floor of a building. In this embodiment, as the floor member 61 fixed on the base 60, the joists 62, the floor plywood 64, and the lower frame 66 are provided.

<Permanent 62>
In this embodiment, a joist 62 is further fixed on a base 60 fixed on a concrete foundation 202 by a washer nut 110. Through holes 62 a are formed in the joists 62. The through hole 62 a is formed so that the anchor bolt 105 and the washer nut 110 as the first fastening member penetrate the joist 62 in the vertical direction in accordance with the exposed portion on the base 60. The through hole 62 a has an inner diameter larger than the outer diameter of the nut portion 114 so that the nut portion 114 of the washer-attached nut 110 exposed on the base 60 is accommodated. The joists 62 are mounted on the base 60 with the through holes 62 a aligned with the washer nuts 110 exposed on the base 60. This allows the joists 62 to be mounted on the base 60 without interfering with the anchor bolt 105 and the washer nut 110. In this embodiment, on the joists 62, a floor plywood 64 and a lower frame 66 are attached.

<Floor plywood 64, lower frame 66>
Through-holes 64 a and 66 a corresponding to the through-holes 62 a formed in the joists 62 are formed in the floor plywood 64 and the lower frame 66. The bases 43 and 44 of the lower transmission member 40 of the vibration control device 100 are mounted on a lower frame 66 mounted on a joist 62 with a floor plywood 64 interposed. In the floor plywood 64 and the lower frame 66, through holes 64a and 66a are also formed in accordance with the through holes 62a formed in the joists 62. The through holes 62a formed in the joists 62, the through holes 64a formed in the floor plywood 64, and the through holes 66a formed in the lower frame 66 are respectively larger than the outer diameter of the sleeve 46A so that the sleeve 46A can be inserted. It is better to have a slightly larger inner diameter.

<Sleeve 46A>
The sleeve 46A penetrates the joists 62, as shown in FIG. In this embodiment, the sleeve 46A is attached to the joists 62, the floor plywood 64 and the through holes 62a, 64a, 66a of the lower frame 66. The sleeve 46A has approximately the same length as the length from the lower surface of the base portions 43 and 44 to the washer nut 110. In this embodiment, the sleeve 46A is a steel pipe and has a required rigidity. The sleeve 46 </ b> A is in contact with the lower surfaces of the bases 43 and 44 and the washer nut 110. In this embodiment, the upper end of the sleeve 46A is in contact with the lower surface of the base portions 43 and 44 as the lower fixing portion. The lower end of the sleeve 46A is in contact with the nut portion 114 of the washer nut 110 mounted on the upper end portion of the anchor bolt 105. In the illustrated example, the lower end of the sleeve 46A is attached to the through hole 62a of the joist 62 and is disposed on the nut portion 114 of the washer-attached nut 110, but it may be disposed on the washer 112 Good.

<Extension bolt 46B>
The extension bolt 46B is passed through the inside of the sleeve 46A. The upper end of the extension bolt 46B extends upward from the upper end of the sleeve 46A. In this embodiment, the anchor bolt 105 does not penetrate through the through hole 118 of the washer nut 110, and the screw groove is formed so that the extension bolt 46B can be connected to the top of the through hole 118 of the washer nut 110. Afford. The lower end portion of the extension bolt 46B is attached to the top of the through hole 118 formed in the nut portion 114 of the washer nut 110, as shown in FIG. Thus, the upper end portion of the anchor bolt 105 and the lower end portion of the extension bolt 46B are connected by the washer nut 110.

  The upper end 46B1 of the extension bolt 46B extends upward from the upper end of the sleeve 46A and has a required length. Bases 43 and 44 as lower fixed parts of the lower transmission member 40 are attached to the upper end 46B1 of the extension bolt 46B. Here, as shown in FIGS. 9 and 14, the bases 43 and 44 as the lower fixing portion have insertion holes 43a1 and 44a1. Then, as shown in FIG. 15, the extension bolt 46B is inserted into the insertion holes 43a1 and 44a1. In this embodiment, the insertion holes 43a1 are long holes extending in the longitudinal direction of the base portion 43a. Further, a reinforcing plate 43c for reinforcing the base portion 43a is attached around the insertion hole 43a1. Here, the bases 43 and 44 of the lower transmission member 40 may be attached to the upper end 46B1 of the extension bolt 46B inserted into the insertion holes 43a1 and 44a1.

<Second Fastening Member 46C>
The second fastening member 46C is attached to the upper end 46B1 of the extension bolt 46B, and fixes the bases 43 and 44 as the lower fixing portion to the joists 62 (in this embodiment, the lower frame 66) . In this embodiment, as shown in FIG. 9, the bases 43 and 44 have insertion holes 43a1 and 44a1 through which the upper end 46B1 of the extension bolt 46B is inserted. Then, the insertion holes 43a1 and 44a1 of the base portions 43 and 44 are inserted into the upper end 46B1 of the extension bolt 46B, and the second fastening member 46C is attached to the upper end 46B1 of the extension bolt 46B (see FIG. 15). The bases 43 and 44 are fixed on the lower frame 66 attached to the joist 62 by the second fastening member 46C attached to the upper end 46B1 of the extension bolt 46B. In this embodiment, as shown in FIG. 15, the second fastening member 46C is composed of a nut 46C1 and a washer 46C2. The second fastening member 46C is not limited to the nut 46C1 and the washer 46C2 as long as the second fastening member 46C is a member for fastening the base 43 as the lower fixing portion to the upper end 46B1 of the extension bolt 46B.

<< Attachment structure of damping device 100 >>
The vibration control device 100 includes a vibration control unit 10, an upper transmission member 30, and a lower transmission member 40 as shown in FIG. Such a vibration control device 100 is disposed in a rectangular frame 204 of a building 200 as shown in FIG. In this embodiment, for example, the lower transmission member 40 is attached to the lower frame 66 of the building 200. At this time, the base portions 43 and 44 serving as the lower fixed portion of the lower transmission member 40 are disposed above the anchor bolt 105 above the joists 62. And it is attached to the upper end part of the extension bolt 46B which penetrated the joists 62, the floor plywood 64 and the lower frame 66. Next, the upper transmission member 30 is attached to the upper frame 50 a of the building 200. Then, the vibration control unit 10 may be disposed between the upper transmission member 30 and the lower transmission member 40 and attached to each of them. The attachment of the upper transmission member 30 to the upper frame 50a, the attachment of the plates 12 and 13 to the upper transmission member 30, the attachment of the lower transmission member 40 to the lower frame 66, and the attachment of the plate 14 to the lower transmission member 40 The attachment is as described above. Here, duplicate explanations of these will be omitted.

  In the vibration control device 100, the shear displacement generated in the building 200 is transmitted to the vibration control unit 10 by the upper transmission member 30 and the lower transmission member 40. FIGS. 17 and 18 show a state where the ceiling beam 50 and the lower frame 66 are relatively displaced in the horizontal direction in the building 200 to which the vibration control device 100 is attached. Here, FIG. 17 shows the ceiling beam 50 displaced to the right with respect to the lower frame 66, and FIG. 18 shows the ceiling beam 50 displaced to the left with respect to the lower frame 66. ing. In addition, the state to which the stud 80 mentioned later was attached is shown in figure here. 17 and 18 appropriately simplify the drawings, and for example, the upper frame 50a and the lower frame 66 are not shown.

  In such a building 200, in the case of a large earthquake, the ceiling beam 50 and the base 60 shake with relative displacement in the horizontal direction. As a result, relative displacement occurs between the upper transmission member 30 attached to the ceiling beam 50 and the lower transmission member 40 attached to the base 60. When the upper transmission member 30 and the lower transmission member 40 are relatively displaced, relative displacement occurs in the opposing plates (12, 13), 14 of the vibration control unit 10. When relative displacement occurs in the opposing plates (12, 13), 14, shear deformation occurs in the viscoelastic bodies 15, 16, as shown in FIG. During a large earthquake, the ceiling beam 50 (upper transmission member 30) and the plates (12, 13), the base 60 (lower transmission member 40) and the plate 14 shake in the horizontal direction with relative displacement. At this time, the shear load is repeatedly input to the viscoelastic bodies 15 and 16.

  The visco-elastic bodies 15, 16 have resistance to a shear load as shown in FIG. 7, and when subjected to a vibration accompanied by a shear deformation, the energy surrounded by the hysteresis loop H for each cycle. It can absorb the corresponding energy. Therefore, the vibration control device 100 can suppress the shaking of the building 200 at the time of an earthquake and can damp the vibration at an early stage, and can reduce the degree of damage or damage to the building 200.

  Further, during a large earthquake, repeated shear loads are input to the visco-elastic bodies 15 and 16 through the upper transmission member 30 and the lower transmission member 40. At this time, the lower frame 66 of the building 200 receives a force through the lower transmission member 40 by the reaction force received from the viscoelastic bodies 15 and 16. For example, as shown in FIG. 17, when the ceiling beam 50 of the building 200 is displaced to the right with respect to the lower frame 66, a force acts on the base 44 on the right side to press the lower frame 66 from above. The force acts on the left base 43 so as to be pulled up from the lower frame 66. On the other hand, as shown in FIG. 18, when the ceiling beam 50 of the building 200 is displaced to the left with respect to the lower frame 66, a force acts on the left base 43 to press the lower frame 66 from above. The force acts on the base 44 on the right side so as to be pulled up from the lower frame 66.

  As described above, the building 200 to which the vibration control apparatus 100 is attached has a concrete foundation 202 provided with the anchor bolt 105 and a through hole 62a through which the anchor bolt 105 is inserted, as shown in FIG. , A foundation 60 mounted on the concrete foundation 202, and a joist 62 fixed on the foundation 60. The bases 43 and 44 of the lower transmission member 40 are disposed above the anchor bolt 105 above the joists 62, as shown in FIG.

  The washer nut 110 as the first fastening member is attached to the upper end of the anchor bolt 105 to fix the base 60 to the concrete foundation 202, and the upper end of the anchor bolt 105 and the lower end of the extension bolt 46B. It is connected with the department. The sleeve 46A penetrates the joists 62. It has a length from the lower surface of the bases 43 and 44 as the lower fixing portion to the washer nut 110 as the first fastening member, and is in contact with the lower surface of the bases 43 and 44 and the washer nut 110. Further, the extension bolt 46B is passed through the inside of the sleeve 46A, and the upper end of the extension bolt 46B extends upward from the upper end of the sleeve 46A. The second fastening member 46C is attached to the upper end 46B1 of the extension bolt 46B and fixes the bases 43 and 44 to the joists 62.

  With this configuration, as shown in FIG. 17 and FIG. 18, when force is exerted to press the lower frame 66 from above the bases 43 and 44, the sleeve 46A receives a compressive force. The sleeve 46A penetrates the joist 62 and has a length from the lower surface of the bases 43 and 44 to the fastening member 110 attached to the upper end of the anchor bolt 105, and is in contact with the fastening member 110. Therefore, the vibration control device 100 can support the force by the sleeve 46A so that the base portions 43 and 44 press the lower frame 66 from above. And damage to the part (lower frame 66 in the example of illustration) in which the base parts 43 and 44 are put can be suppressed small.

  From such a viewpoint, the sleeve 46A may be placed on the fastening member 110. In this case, in the embodiment described above, the sleeve 46A is placed on the nut 114, but the present invention is not limited to this. For example, the sleeve 46A may be placed on the washer 112 as the fastening member 110. Even in this case, the vibration control device 100 can support the compressive force received from the base portions 43 and 44 (lower fixing portion) by the sleeve 46A placed on the washer 112. For this reason, damage to the part (lower frame 66 in the illustrated example) where the base portions 43 and 44 are placed can be suppressed to a low level.

  The lower end portion of the extension bolt 46B is connected to the upper end portion of the anchor bolt 105 by a washer nut 110 as shown in FIG. The upper end portion of the extension bolt 46B fixes the bases 43 and 44 as the lower fixing portion of the lower transmission member 40 to the joists 62 (the lower frame 66 in FIG. 15). Therefore, as shown in FIGS. 17 and 18, when a force acts on the bases 43 and 44 so as to be pulled up from the lower frame 66, the extension bolt 46B receives a tensile force. That is, as shown in FIG. 15, the lower end portion of the extension bolt 46B penetrates the joist 62 and is connected to the anchor bolt 105 by the first fastening member 110. The upper end 46B1 of the extension bolt 46B is attached to the bases 43 and 44 by a second fastening member 46C. Therefore, when a force acts on the base portions 43 and 44 so as to be pulled up from the lower frame 66, the vibration control device 100 is subjected to a tensile force by the extension bolt 46B and the anchor bolt 105. Then, the base portions 43 and 44 are fixed to the lower frame 66 without rising. Therefore, the shear displacement is properly transmitted by the vibration control unit 10.

  Further, the extension bolt 46B is passed through the inside of the sleeve 46A. Therefore, as shown in FIGS. 17 and 18, a force acts on the bases 43 and 44 so as to be pulled up from the lower frame 66, and the extension bolt 46B receives a tensile force and swings to the left and right. 62 damage can be reduced. Further, the vibration control device 100 can fix the bases 43 and 44 (lower fixing portion) via the sleeve 46A and the extension bolt 46B, and the compression force and the tensile force received from the bases 43 and 44 can be made of concrete It can be transmitted to the base 202 and the anchor bolt 105. In this case, it is not necessary to use a long anchor bolt which penetrates the joist 62. For this reason, construction labor can be reduced, and cost reduction can be achieved.

<< Pillar 80 >>
Next, the stud 80 will be described.

  The stud 80 is, as shown in FIG. 1, in the rectangular frame 204, at an intermediate position between the pair of posts 70a and 70b, the ceiling beam 50 (upper frame 50a in FIG. 1) and the base 60 (lower frame in FIG. 1). 66) attached. In this embodiment, it is disposed between the two braces 41, 42 of the vibration control apparatus 100. The stud 80 extends in the vertical direction so as to pass through the portion provided with the vibration control unit 10 (opposing plates (12, 13), 14 and the visco-elastic bodies 15, 16).

  In this embodiment, as shown in FIG. 1, the stud 80 is attached to the upper frame 50 a and the lower frame 66 so as to vertically cut the vibration control device 100 at the middle portion of the rectangular frame 204. FIG. 19 is a side view of the stud 80. As shown in FIG. 19, notches 81 and 82 are formed in a portion of the stud 80 vertically extending the vibration control device 100. In this embodiment, the notch 81 is provided at a site where the damping unit 10, the upper transmission member 30 and the lower transmission member 40 cross the stud 80. In particular, in this embodiment, the upper side is thinner than the middle position C of the braces 41 and 42 of the lower transmission member 40. Here, as shown in FIG. 17 and FIG. 18, the notch 81 has a predetermined length according to a portion where the upper side of the middle position C of the braces 41 and 42 overlaps the stud 80 when the building 200 sways. It is formed of

  Also, the notch 82 is provided at a location where the bridge 45 crosses the stud 80. Each notch 81, 82 is provided with a step 81a, 82a which is one step higher than the bottom of the notch 81, 82. In addition, each notch 81, 82 is provided with a lid 83, 84 to be put on it. The lids 83 and 84 are attached to the steps 81 a and 82 a. As a result, a gap in which the vibration control device 100 is accommodated is formed in the stud 80 with the lids 83 and 84 attached to the notches 81 and 82.

  In this embodiment, as shown in FIG. 1, the damping unit 10, the upper transmission member 30 and the lower transmission member 40 are accommodated in the notch 81 of the stud 80. Further, the bridge 45 is accommodated in the notch 82. Further, the upper end and the lower end of the stud 80 may be fixed to the upper frame 50 a and the lower frame 66 by, for example, striking a nail or a screw obliquely.

  That is, in this embodiment, in the thickness direction of the rectangular frame 204, the studs 80, the upper frame 50a, the lower frame 66, and the columns 70a and 70b have approximately the same width. The upper frame 50a, the lower frame 66, and the pillars in the thickness direction of the rectangular frame 204 also in the region where the members constituting the vibration control device 100 cross, that is, the regions where the lids 83 and 84 are attached to the studs 80. Make it approximately the same width as 70a and 70b. This allows the stud 80 to properly delimit the space of the rectangular framework 204. By attaching such a stud 80, the building 200 to which the vibration control device 100 is attached can be regarded as a structure having fire resistance performance conforming to the quasi-refractory structure defined by the Building Standard Act.

  As mentioned above, the damping apparatus 100 proposed here is provided with the damping unit 10, the upper transmission member 30, and the lower transmission member 40, as shown in FIG. The vibration control unit 10 is attached to the vibration control members 15 and 16 and the vibration control members (viscoelastic bodies 15 and 16) as shown in FIG. 6, and shear displacement relative to the vibration control members 15 and 16 And a pair of mounting portions (plates 12, 13 and 14) for inputting. The upper transmission member 30 is a first unit fixing portion fixed to the upper fixing portion 31 and one of the mounting portions (plates 12, 13 and 14) of the vibration control unit (plates 12 and 13). 32 and 33 are provided. The lower transmission member 40 includes a lower fixing portion (bases 43 and 44) and a second unit fixing portion 47 fixed to the other attaching portion (plate 14) of the pair of attaching portions of the vibration control unit 10. And braces 41 and 42 connected to the second unit side fixing portion 47 and the lower fixing portion (bases 43 and 44).

  Here, the upper ends of the braces 41 and 42 are joined to the lower surface 47 b of the second unit side fixing portion 47. Ribs 48 and 49 are provided at corner portions where the upper ends of the braces 41 and 42 and the lower surface 47 b of the second unit fixing portion 47 are joined. The rib 48 has a side surface of the upper end portion of the brace 41, 42 facing the direction of the shear displacement input to the vibration control member (viscoelastic bodies 15, 16) and the lower surface 47 b of the second unit fixing portion 47 It is bridged between. Then, the side surfaces of the upper end portions of the braces 41 and 42 and the lower surface 47 b of the second unit fixing portion 47 are joined. According to the vibration control device 100, the required strength is secured at the joint between the braces 41 and 42 and the second unit side fixed portion 47, and the required rigidity can be secured for the lower transmission member 40. Furthermore, the thickness of the joint between the braces 41 and 42 and the second unit fixing portion 47 can be reduced in the direction (thickness direction) orthogonal to the shear displacement direction Y and the vertical direction X (see FIG. 2). For this reason, it is suitable for attaching the stud 80, and the notches 81 and 82 formed in the stud 80 can be made small.

  In this embodiment, the left and right spaces of the rectangular frame 204 are partitioned by the studs 80. However, the upper transmission member 30, the vibration control unit 10, and the lower transmission member 40 cross the notches 81 and 82 formed in the stud 80, as shown in FIG. At the site where such notches 81 and 82 are provided, a void is generated in the stud 80. Therefore, it can not be said that the left and right spaces of the rectangular frame 204 are separated by the studs 80 in light of the standard of the quasi-refractory structure defined by the Building Standards Act. For this reason, the building 200 may not be regarded as a structure having fire protection performance conforming to the quasi-refractory structure defined by the Building Standard Act.

  On the other hand, the space formed by the notches in the studs 80 is filled with the heat insulating material, so that the left and right spaces of the rectangular frame 204 can be the It becomes the state divided by. Furthermore, the building 200 will be regarded as a structure having fire protection performance conforming to the quasi-refractory structure defined by the Building Standard Law.

  For this reason, it is good to fill up the gap which arose by providing a notch in stud 80 with a heat insulating material. In this case, for example, as shown in FIG. 20, the heat insulators 90 and 92 are formed in advance at locations where the upper transmission member 30, the vibration control unit 10, and the lower transmission member 40 cross the notches formed in the stud 80. , 94, 96 may be attached. Here, FIG. 20 is a view showing arrangement positions where the heat insulators 90, 92, 94 are attached to the upper transmission member 30, the vibration control unit 10 and the lower transmission member 40. Here, the places where the heat insulators 90, 92, 94, 96 are disposed are indicated by oblique lines. For example, glass wool can be used as the heat insulating material 90, 92, 94, 96. In this case, the glass wool may be used by filling it in a packaging material such as a vinyl bag so that the glass wool is not exposed to the outside.

  Also, in this case, the upper transmission member 30, the vibration control unit 10, and the lower transmission member 40 are pre-insulated with heat insulators 90, 92, 94, so as to fill the gaps generated by providing the notches in the studs 80. 96 may be attached. By attaching the heat insulators 90, 92, 94, 96 to the upper transmission member 30, the vibration control unit 10, and the lower transmission member 40 in advance, the studs 80 are attached to the notches 81, 82. The resulting air gaps may be configured to be filled by the heat insulators 90, 92, 94, 96. The effort of attaching the heat insulating material 90, 92, 94, 96 which fills the space which arises in the notch 81, 82 of the stud 80 is reduced.

  In the example shown in FIG. 20, the thermal insulators 90, 92, 94 fill the air gap that occurs in the notch 81 at the top of the stud 80. Among them, the heat insulating material 90 fills the space under the base 31 of the upper transmission member 30. The heat insulating material 90 may be attached to the lower surface of the base 31 of the upper transmission member 30, for example. In this case, the heat insulating material 90 may be attached to the base 31 with a double-sided tape, for example. The heat insulating material 92 fills the space under the visco-elastic bodies 15 and 16 of the vibration control unit 10 and the top of the flange 17. The heat insulating material 92 may be attached to both sides of the plate 14 of the vibration control unit 10. In this case, the heat insulator 92 may be attached to the plate 14 with a double-sided tape.

  In addition, the heat insulating material 94 fills the space under the second unit side fixing portion 47 of the lower transmission member 40. Such a heat insulating material 94 may be attached, for example, to both surfaces of the rib 48 of the lower transmission member 40 and the opposite inner side surfaces of the braces 41 and 42 (here, the upper pipes 41A and 42A). In this case, the heat insulating material 94 may be attached to both surfaces of the rib 48 and the opposite inner side surfaces of the braces 41 and 42 by double-sided adhesive tape. Furthermore, the heat insulating material 96 fills the air gap which arises in the notch 82 formed in the stud 80 for inserting the bridge 45. Here, the heat insulating material 96 may be wound around the bridge 45. For example, the end of the heat insulating material 96 wound around the bridge 45 may be taped to the lower side surface of the bridge 45.

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

  For example, in the embodiment described above, the floor member 61 of the building 200 is configured by the joists 62, the floor plywood 64, and the lower frame 66, but the configuration of the floor member 61 is not limited to this. For example, FIG. 21 is a modification of the building 200. Here, the floor member 61 has no joists 62, and the floor plywood 64 and the lower frame 66 are sequentially mounted on the base 60. As shown in FIG. 21, the floor member 61 may have a configuration in which the floor plywood 64 and the lower frame 66 are attached on the base 60 without the joists 62. The configuration of the floor member 61 differs depending on the structure of the building 200, and may be appropriately changed. Moreover, although the example which attached the damping device 100 to the 1st floor of the building 200 was illustrated in embodiment mentioned above, the damping device 100 may be attached to the 2nd floor or more of the building 200 floor.

  Moreover, although the vibration damping device 100 illustrated the form which absorbs vibration energy by the viscoelastic bodies 15 and 16 of the vibration damping unit 10 in embodiment mentioned above, the structure of the vibration damping unit 10 is not limited above. The shapes and structures of the upper transmission member 30 and the lower transmission member 40 may be variously modified unless otherwise stated. Also, for example, the lids 83 and 84 attached to the notches 81 and 82 formed in the stud 80 may use, for example, the same wood as the stud 80. Also, the lids 83 and 84 may be made of hardware, for example. Further, the shapes, structures, and the like of the upper transmission member 30, the vibration control unit 10, and the lower transmission member 40 are not limited to the above-described embodiment unless otherwise specified. For example, although the vibration control unit 10 illustrated the structure provided with the viscoelastic bodies 15 and 16, it may be a damper. In addition, the shape and structure of the brace are not limited to the above-described form.

10 Vibration control unit 12, 13, 14 Mounting part (plate)
15, 16 Elastic member (viscoelastic body)
Reference Signs List 17 flange 18 bolt 20 nut 30 upper transmission member 31 base 31a bolt hole 32, 33 mounting piece 32a, 33a boss 34, 35 insertion hole 37 bolt 38 nut 40 lower transmission member 41, 42 brace (intermediate member)
41A, 42A upper pipe 41B, 42B lower pipe 43, 44 lower fixing portion (base)
43a, 44a Base portion 43a1, 43a2, 44a1, 44a2 Insertion hole 43b, 44b Flange portion 43c, 44c Reinforcing plate 45 Bridge 46A Sleeve 46A1 Bolt 46B Extension bolt 46C Second fastening member 46C1 Nut 46C2 Washer 47 Second unit side fixed portion 48 , 49 Ribs 50 Ceiling beams 50a Upper frame 60 Base 61 Floor member 62 Total thickness 64 Floor plywood 66 Lower frame 70a, 70b Pillar 80 Pillar 81, 82 Notch 81, 82a Step 83, 84 Lid 90, 92, 94, 96 Insulation material 100 Damping device 105 anchor bolt 106 lag screw bolt 110 washer nut (first fastening member)
112 Washer part 114 Nut part 116 Sleeve part 118 Through hole 200 Building 202 Concrete foundation 204 Rectangular frame H Hysteresis loop

Claims (4)

  A foundation provided with anchor bolts,
  A base having a through hole through which the anchor bolt is inserted, and mounted on the base;
  A floor member fixed on the base
  Control equipment and
Equipped with
  The vibration control device
      Vibration control member,
      A pair of mounting portions attached to the vibration control member and inputting relative shear displacement to the vibration control member;
Control unit equipped with
      Upper fixed part,
      A first unit side fixing portion fixed to one of the pair of mounting portions of the vibration control unit;
An upper transmission member provided with
      A lower fixing portion in which an insertion hole is formed,
      A second unit side fixing portion fixed to the other mounting portion of the pair of mounting portions of the vibration control unit;
A lower transmission member provided with
      An extension bolt inserted into the insertion hole of the lower fixing portion;
      A second fastening member attached to the upper end of the extension bolt;
      A sleeve mounted so as to penetrate the floor member, and passed through the extension bolt at the lower side of the lower fixing portion, and in contact with the lower surface of the lower fixing portion;
      A washer nut attached to the lower end of the extension bolt and in contact with the lower end of the sleeve and attached to the upper end of the anchor bolt;
Equipped with
building. The building according to claim 1 , wherein the sleeve is a steel pipe.
  Vibration control member,
  A pair of mounting portions attached to the vibration control member and inputting relative shear displacement to the vibration control member;
Control unit equipped with
  Upper fixed part,
  A first unit side fixing portion fixed to one of the pair of mounting portions of the vibration control unit;
An upper transmission member provided with
  A lower fixing portion in which an insertion hole is formed,
  A second unit side fixing portion fixed to the other mounting portion of the pair of mounting portions of the vibration control unit;
A lower transmission member provided with
  An extension bolt inserted into the insertion hole of the lower fixing portion;
  A second fastening member attached to the upper end of the extension bolt;
  A sleeve which is passed through the extension bolt on the lower side of the lower fixing portion and is in contact with the lower surface of the lower fixing portion;
  A washer nut attached to the lower end of the extension bolt and in contact with the lower end of the sleeve;
Vibration control equipment equipped with. The vibration control device according to claim 3 , wherein the sleeve is a steel pipe.

Images