JP6658061B2 - Suspended ceiling structure vibration control device and seismic partitioning device - Google Patents

Description

  The present invention relates to a vibration damping device and a seismic partitioning device for a suspended ceiling structure, and more particularly, to a vibration damping device installed between a non-seismic suspended ceiling structure and a floor structure to reduce vibration of the suspended ceiling structure during an earthquake. The present invention relates to a vibration damping device and an earthquake-resistant partition device.

  Usually, in an office building or the like, each floor is formed by a plurality of slabs, a suspended ceiling structure is constructed on the lower surface side of the upper slab, and a floor structure is constructed on the upper surface side of the lower slab, and is surrounded by structural walls. The divided space is appropriately partitioned by a partitioning device. In general, a suspended ceiling structure holds a ceiling support rail stretched vertically and horizontally in a suspended manner by a suspension support member (hanging bolt) hanging from an upper slab, and locks the periphery of the ceiling panel with the ceiling support rail. Or a structure in which a ceiling panel is screwed to a ceiling support rail. A partition device combining a partition panel and a door panel is installed in a room having such a suspended ceiling structure from a ceiling panel to a floor structure. Here, the partition panel, a plurality of pillars are erected between the ceiling rail fixed using the ceiling support rail on the lower surface side of the ceiling panel and the ground rail laid on the upper surface of the floor structure, A panel plate is mounted between adjacent columns.

  Conventionally, there is no seismic standard for suspended ceiling structures, and many suspended ceiling structures have fallen and been damaged by the Great East Japan Earthquake, and there has been an increasing trend to increase the earthquake resistance of ceilings. In the conventional suspended ceiling structure, the ends of the ceiling support rail and the ceiling panel are almost in contact with the structural wall of the building, and when the building is deformed by the earthquake, the ends of the ceiling support rail and the ceiling panel are connected to the wall. In addition, the suspension ceiling structure is damaged by severe collision, and the horizontal displacement of the suspended ceiling structure is large, so that the partition panel provided under the suspended ceiling structure is also damaged at the ends. In particular, the suspended ceiling structure was largely displaced in the horizontal direction due to the resonance phenomenon due to long-period vibration, or the behavior was different from that of the building slab or wall surface, and the damage was increased. By the way, for suspended ceiling structures of large buildings such as gymnasiums and theaters, braces are provided on the suspension bolts to improve earthquake resistance, and there is clearance between structures such as walls and columns and the suspended ceiling structure. There have been proposed seismic standards such as to prevent damage to the ends of ceiling panels. The new seismic standards require that the interlayer displacement angle be 1/40, the seismic intensity 7 and the ceiling acceleration be 2.2 G.

  In a new building, it is ideal to construct an earthquake-resistant suspended ceiling structure from the beginning and install an earthquake-resistant partition device between the earthquake-resistant suspended ceiling structure and the floor structure. Even in the case of existing suspended ceiling structures with insufficient seismic performance, it is only necessary to be able to go into the ceiling and perform seismic reinforcement work to add braces etc., but such seismic reinforcement work may be difficult Many.

  Various devices are provided to increase the earthquake resistance of buildings. For example, in Patent Literature 1, a frame body including a vertical frame and a horizontal frame is provided on a load-bearing wall provided between columns of a building, and a low yield point steel is provided between a plurality of braces provided in a space surrounded by the frame body. A structure is disclosed in which a low yield point steel plastically deforms during an earthquake to absorb seismic energy and prevent the entire building from collapsing. Here, a point that an X-shaped brace is constituted by a plurality of braces is also disclosed.

  Further, in Patent Document 2, a pair of longitudinal members is provided between a lateral member of a 2 × 4 house and a floor frame member, and the lateral members are provided on each of the pair of longitudinal members via a pull-out prevention tool. The upper and lower horizontal shaft members are joined and integrated with the horizontal member and the floor frame member, respectively, and the surface material provided at the portion surrounded by the vertical and horizontal shaft members is changed to the vertical material through the vibration control member. An attached damping structure is disclosed. Here, the vibration damping member includes a shaft material mounting portion mounted on the vertical material, a surface material mounting portion mounted on the surface material, and a vibration control damper made of a viscoelastic body provided therebetween. It is configured.

  Further, Patent Documents 3 and 4 disclose a viscoelastic damper having a structure in which metal plates are connected with a viscoelastic body, and the viscoelastic damper is arranged between structural materials of a building to suppress vibration of the building. Is disclosed.

  However, any of those described in these patent documents is to fix the vibration damping structure to the pillars, beams or slabs of the building to increase the seismic resistance of the building itself. It is not an idea to control the rolling of the vehicle.

JP 2001-140343 A JP 2009-007868 A JP-A-06-212833 JP-A-10-231640

  Therefore, in view of the above situation, the present invention is to solve the problem by installing between a suspended ceiling structure and a floor structure having insufficient seismic performance to reduce the vibration of the suspended ceiling structure during an earthquake. An object of the present invention is to provide a vibration damping device and a seismic partitioning device for a suspended ceiling structure having a function of suppressing damage to the suspended ceiling structure.

  In order to solve the above-described problems, the present invention has the following vibration damping device and seismic partitioning device for a suspended ceiling structure.

(1) A panel structure having a vibration damping function is installed between a suspended ceiling structure constructed on the lower surface side of the upper slab and a floor structure constructed on the upper surface side of the lower slab, and the suspended ceiling is provided. What is claimed is: 1. A vibration damping device for a suspended ceiling structure, comprising suppressing a lateral movement of a structure, wherein said panel structure is mounted on a ceiling rail mounted on a lower surface of said suspended ceiling structure and on an upper surface of said floor structure. A panel plate is mounted on each of the front and back surfaces between a pair of columns erected at a predetermined distance from the ground rail, and in a space between the front and back panel plates, the lower ends of both columns are connected by a lower bracket, While connecting the upper portions of both columns with an upper bracket, the X-shaped brace connected directly or indirectly to both columns increases rigidity, and fixes the lower bracket to the floor structure together with the ground rail, The upper end of the support It holds the displaceably plane with respect Kiten rail, the damping device of the suspended ceiling structure, characterized in that formed by connecting the upper bracket and the top rail viscoelastic dampers.

(2) The lower bracket includes a horizontal portion that is disposed along the ground rail and is fixed to the ground rail, and a vertical portion that rises upward at both ends of the horizontal portion and connects to a lower end side surface of the pillar. (1) The vibration damping device for a suspended ceiling structure according to (1).

(3) The ground rail is a long member having a substantially U-shaped cross section having a concave groove opened upward, and the horizontal portion of the lower bracket is shaped to fit into the concave groove of the ground rail (2). ).

(4) The X-shaped braces are connected at the center intersection of the two braces, the upper ends of the two braces are connected to both ends of the upper bracket, and the lower ends of the two braces are connected via the support bracket. (1) The vibration damping device for a suspended ceiling structure according to any one of (1) to (3), which is connected to a lower portion of the support.

(5) The viscoelastic damper has a structure in which a viscoelastic body is bonded between overlapping portions of a first component plate extending downward and a second component plate extending upward, and a lower portion of the first component plate is attached to the viscoelastic damper. The vibration damping device for a suspended ceiling structure according to any one of (1) to (4), wherein the vibration control device is mounted on an upper bracket and the upper portion of the second component plate is mounted on a ceiling bracket fixed to the ceiling rail.

(6) An anti-seismic partition device, wherein the vibration damping device for a suspended ceiling structure according to any one of (1) to (5) is provided in a part.

(7) a lower bracket for connecting the lower ends of the two columns provided at an interval and fixing to the ground rail, an upper bracket for connecting the upper portions of both columns, and a column bracket for attaching to the lower portion of both columns; An X-shaped brace having an upper end connected to both ends of the upper bracket, and a lower end connected to each of the support brackets; a top bracket fixed to the top rail; and a viscoelastic damper connecting the top bracket and the top bracket. And a vibration suppression unit consisting of

  According to the vibration damping device for a suspended ceiling structure of the present invention described above, the rigidity between the columns is increased, and even if a large interlayer displacement or roll occurs in the building due to the earthquake, the suspension ceiling structure can be moved sideways. Vibration can be suppressed by a viscoelastic damper provided between the upper bracket and the ceiling rail to prevent damage to the suspended ceiling structure. In addition, since processing is performed below the suspended ceiling structure, any ceiling structure can be used. Construction is possible. Further, since the roll of the suspended ceiling structure can be suppressed, the partition panel provided between the suspended ceiling structure and the floor structure can be prevented from being damaged.

  By fixing the lower bracket connected between the lower ends of the pillars to the floor structure together with the ground rail, in particular, the horizontal part of the lower bracket is arranged and fixed along the ground rail. By fixing the horizontal portion in the groove of the ground rail in a fitted state, the ground rail can be reinforced more firmly. In addition, by connecting the vertical portion of the lower bracket to the lower end side surface of the column, it is possible to prevent the column from rising during an earthquake. Further, since the lower bracket can be dropped between the existing columns and constructed, the construction is facilitated.

  By preparing X-shaped braces having different lengths depending on the height of the suspended ceiling structure, any construction situation can be easily handled.

  Since the viscoelastic damper is connected between the upper bracket and the top rail via the top bracket, the height error can be finely adjusted by adjusting the mounting position of the second component plate of the viscoelastic damper with respect to the top bracket. It is possible to always expect a certain damper effect as designed in any situation.

  By providing the vibration damping device for the suspended ceiling structure in a part of the partitioning device, not only the earthquake resistance of the suspended ceiling structure can be improved, but also the earthquake resistance of the partitioning device itself can be enhanced.

  By using a vibration damping unit composed of a lower bracket, an upper bracket, a support bracket, an X-shaped brace, a ceiling bracket and a viscoelastic damper, the suspension ceiling structure is mounted between the supports of the existing partition device and The seismic resistance of the partitioning device can also be improved.

It is an abbreviated front view showing the damping device of the suspended ceiling structure of the present invention. It is a disassembled perspective view which shows the lower structure of the vibration damping device of a suspended ceiling structure. It is a disassembled perspective view which shows the upper structure of the vibration damping device of a suspended ceiling structure. It is a fragmentary vertical front view which shows the lower structure of the vibration damping device of a suspended ceiling structure. It is a fragmentary vertical front view which shows the upper structure of the vibration damping device of a suspended ceiling structure. It is an exploded perspective view showing the structure of a viscoelastic damper. It is a partially omitted perspective view showing a panel board. FIG. 4 is a partial perspective view illustrating a relationship between an upper bracket and a support metal of a panel plate. FIG. 4 is a partial perspective view showing the relationship between the upper bracket and the support bracket of the panel plate.

  Next, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. 1 to 5 show an embodiment of a vibration damping device for a suspended ceiling structure according to the present invention, FIG. 6 shows a viscoelastic damper, FIG. 7 shows a panel plate, and reference numeral 1 in the drawing denotes a suspended ceiling structure 2 is a floor structure, 3 is a panel structure, 4 is a top rail, 5 is a ground rail, 6 is a support, 7 is a panel plate, 8 is a lower bracket, 9 is an upper bracket, 10 is an X-shaped brace, 11 Denotes viscoelastic dampers, respectively.

  The vibration damping device for a suspended ceiling structure according to the present invention comprises: a suspended ceiling structure 1 constructed on the lower surface side of an upper slab of a building and having insufficient earthquake resistance; and a floor structure 2 constructed on the upper surface side of a lower slab. A panel structure 3 having a vibration damping function is installed between the suspended ceiling structure 1 and the suspension structure 1. In this case, since the direction of the roll due to the earthquake is not determined, it is necessary to provide the panel structure 3 with a vibration damping function in different directions including at least two orthogonal directions. In the present invention, "slab" is used in a broad concept including a concrete slab and a steel slab.

  Although it is assumed that the suspended ceiling structure 1 does not have the new standard of earthquake resistance, it may have high earthquake resistance. The suspended ceiling structure with high seismic resistance, which has the new standard of seismic resistance, is not shown, but the ceiling support rail stretched vertically and horizontally is suspended by a plurality of suspension members hanging from the upper slab. A cross-shaped brace is provided between adjacent suspension members to increase the strength, and the ceiling panel supports the ceiling panel. In the present invention, a suspended ceiling structure having insufficient earthquake resistance is a conventional structure having no seismic reinforcement such as a cross-shaped brace.

  When the panel structure 3 is provided between the suspended ceiling structure 1 and the floor structure 2, as shown in FIGS. 1 to 5, the ceiling rail 4 attached to the lower surface of the suspended ceiling structure 1 and the floor A pair of columns 6,... Are erected at a distance from the ground rail 5 attached to the upper surface of the structure 2, and panel plates 7, 7 are mounted on both front and back surfaces between the columns 6, 6. Constitute. Note that the panel plate 7 may be only one surface on the surface side between the columns 6 and 6. A lower bracket 8 for reinforcement, an upper bracket 9 and an X-shaped brace 10 are connected between the two columns 6 to form a frame structure having increased rigidity. Then, a viscoelastic damper 11 is connected between the upper bracket 9 and the ceiling rail 4, and the vibration energy of the suspended ceiling structure 1 is absorbed by the viscoelastic damper 11 to suppress the roll.

  Next, a specific example of the panel structure 3 will be described with reference to FIGS. The panel structure 3 includes a pair of pillars standing upright at predetermined intervals between a ceiling rail 4 attached to the lower surface of the suspended ceiling structure 1 and a ground rail 5 attached to the upper surface of the floor structure 2. Panel plates 7 and 7 are attached to both front and back surfaces between 6 and 6, respectively, and in a space between the front and back panel plates 7 and 7, the lower ends of both columns 6 and 6 are connected by a lower bracket 8, and both columns 6 and 6 are connected. 6 are connected by an upper bracket 9 and the X-shaped brace 10 directly or indirectly connected to both columns 6 and 6 increases rigidity, and the lower bracket 8 is floored together with the ground rail 5. It is fixed to the structure 2, holds the upper end of the support column 6 so as to be in-plane displaceable with respect to the ceiling rail 4, and connects the upper bracket 9 and the ceiling rail 4 with a viscoelastic damper 11. is there.

  Specifically, the lower bracket 8 is disposed along the ground rail 5 and is fixed to the ground rail 5. Are provided with vertical portions 13 and 13 connected to the first portion. The ground rail 5 is a long member having a substantially U-shaped cross section having a concave groove 14 opened upward, and the horizontal portion 12 of the lower bracket 8 is fitted into the concave groove 14 of the ground rail 5. Shape.

  The X-shaped brace 10 is connected at the center intersection of the two braces 15, 15, and the upper ends of the two braces 15, 15 are connected to both ends of the upper bracket 9. , 15 are connected to the lower part of the column 6 via a column bracket 16.

  As shown in FIGS. 1, 3, 5 and 6, the viscoelastic damper 11 is a viscoelastic body between the overlapping portions of the first component plate 17 extending downward and the second component plate 18 extending upward. 19 is bonded to the structure. The viscoelastic damper 11 attaches a lower portion of the first component plate 17 to the upper bracket 9 and attaches an upper portion of the second component plate 18 to a ceiling bracket 20 fixed to the ceiling rail 4.

  When a relative displacement occurs in the panel in-plane direction due to an earthquake between the suspended ceiling structure 1, that is, the ceiling rail 4, and the panel structure 3, that is, the upper bracket 9, fixed to the floor structure 2, Vibration energy is absorbed by the deformation of the viscoelastic body 19. In other words, interlayer displacement occurs in the upper and lower slabs due to the rolling due to the earthquake. At this time, the rigid panel structure 3 is displaced horizontally with respect to the suspended ceiling structure 1 and the viscoelastic body of the viscoelastic damper 11 is displaced. Deforms 19 and absorbs the energy of the roll. As a result, the swinging of the suspended ceiling structure 1 can be suppressed, and damage and collapse can be prevented.

  More specifically, as shown in FIG. 3, the top rail 4 is a long member having a substantially U-shaped cross section having a concave groove 21 opened downward, and as shown in FIG. It is fixed to the ceiling support rail 22 by screws. The column 6 is formed of a C-shaped member having a substantially square cross section, and a reinforcing member 23 formed of an inverted C-shaped member having a substantially quadrangular cross section is fitted therein to have high strength. As shown in FIGS. 1, 2 and 4, an adjuster 24 having a height adjusting function is attached to the lower end of the support post 6, and the adjuster 24 is fitted into the concave groove 14 of the ground rail 5. It is supported in a state of matching. As shown in FIGS. 1, 3 and 5, a top support member 25 is accommodated at the upper end of the support column 6 so that the height can be adjusted, and the displacement in the direction outside the panel surface is regulated. Are supported in a state that allows displacement of

  As shown in FIGS. 1, 2 and 4, the lower bracket 8 has a lateral width that closely fits into the concave portion 14 of the ground rail 5, and has a substantially U-shaped cross section in which information is opened similarly to the ground rail 5. And a vertical portion 13 is formed at both ends of the horizontal portion 12. The vertical portion 13 has a substantially U-shape in plan view, and is continuously bent and formed from one side wall plate of the horizontal portion 12. The other end of the vertical portion 13 is the other side wall plate of the horizontal portion 12. To increase the strength. At the upper part of the vertical part 13, there is provided a mounting plate 26 which is joined to the side surface of the support column 6 and is screwed, and a lower part of the mounting plate 26 is cut out to allow the adjuster 24 to escape. 27. The lower bracket 8 can be mounted between the columns 6 and 6 by being dropped from above even when the columns 6 and 6 are erected on both sides. The horizontal portion 12 of the lower bracket 8 is fixed to the floor structure 2 together with the ground rail 5 with a large number of screws 28 in a state where the horizontal portion 12 of the lower bracket 8 is fitted into the recess 14 of the ground rail 5. For example, at both ends of the horizontal portion 12, five screws are fixed at 60 mm intervals in the longitudinal direction, two at the width direction, and a total of ten screws 28..., And three at the center are along the center line. Are fixed to the floor structure 2 while also reinforcing the ground rail 5 with screws 28. Then, in a state where the mounting plate 26 of the vertical portion 13 is joined to the side surface of the lower end portion of the column 6, the mounting plate 26 is attached to the column 6 together with the receiving member 29 of the adjuster 24 by using screws 30 at four locations. Connected. When the floor structure 2 is not an access floor and has a structure in which there is no space for wiring, the floor structure 2 is directly fixed to the floor surface with anchor bolts. Here, the screws used in the present embodiment are mainly tapping screws, and the holes are not tapped.

  As shown in FIGS. 1, 3 and 5, the upper bracket 9 forms a reinforcing edge 32 by bending an upper edge of a vertically oriented substrate 31 at a right angle, and forms both end edges of the substrate 31. This is a structure in which connecting plates 33, 33 are formed by bending at right angles. Then, the substrate 31 of the upper bracket 9 is disposed substantially at the center in the thickness direction of the panel structure 3, and the connection plates 33, 33 are connected between the upper inner surfaces of the columns 6, 6 with screws 34,. Here, notches 36, 36 for attaching a locking tool 35 to the side surface of the column 6 to lock the panel plate 7 are formed above and below the connecting plate 33.

  The X-shaped brace 10 has a structure in which the center of the central intersection of two braces 15, 15 having a substantially U-shaped cross section is connected by a screw 37. At the time of shipment, the two braces 15, 15 are parallel. It can be folded into a state. A plurality of mounting holes 38 are formed at the upper and lower ends of each brace 15 at intervals in the longitudinal direction. Here, the mounting holes 38 are formed by combining a circular hole and a long hole extending in the longitudinal direction. The X-shaped brace 10 is configured such that upper ends of both braces 15, 15 are connected to both ends of the upper bracket 9, and the lower ends of both braces 15, 15 are fixed to lower portions of the columns 6, 6. After being connected to the brackets 16, 16, the screw 37 at the center is strongly tightened, and the screws 37 are also firmly connected at the upper and lower positions.

  A plurality of mounting holes 42 are vertically spaced to connect the upper end of the X-shaped brace 10 to the downward bulging portions 40, 40 formed at both ends of the upper bracket 9 with screws 41. Is formed. The mounting holes 42 are also formed by combining a circular hole and a horizontally long slot. Then, the upper ends of the braces 15, 15 of the X-shaped brace 10 are overlapped on both ends of the substrate 31 of the upper bracket 9, and the mounting holes 38,. The screws 41 are screwed together using a plurality of pairs of holes formed by crossing each other.

  On the other hand, as shown in FIGS. 1, 2 and 4, the support bracket 16 has connecting plates 44, 44 formed by bending right and left ends of a support plate 43 facing in the vertical direction alternately in opposite directions. It is the structure which did. Then, the connecting plates 44 are connected to the lower inner surface of the column 6 by screws 45,. In this case as well, a notch 46 for attaching the locking tool 35 to the column 6 is formed in the connecting plate 44 at the center. Note that the notch 46 may not be used depending on the position at which the locking tool 35 is attached to the column 6. The support plate 43 of the column bracket 16 is formed with a plurality of mounting holes 47,..., Each of which is a combination of a circular hole and a horizontally long slot, like the mounting holes 42,. The support bracket 16 has a mirror image symmetrical shape with respect to a horizontal center line in the vertical direction so that the support bracket 16 can be used by being inverted right and left. Then, the lower ends of the braces 15, 15 of the X-shaped brace 10 are superimposed on the support plate 43 of each of the column brackets 16 attached to the column 6, so that the mounting holes 38,. The screws 48 are screwed together using a plurality of pairs of holes formed by crossing 16 mounting holes 47. As described above, by using the elongated holes extending in different directions, dimensional errors and construction errors of the members can be absorbed, and the members can be reliably connected, thereby realizing a strong rigid structure.

  As shown in FIGS. 1, 3 and 5, the top bracket 20 is formed by bending an upper edge of a vertically oriented mounting plate 49 at a right angle to form a connecting plate 50. A large number of through holes 52,... Are formed on the top rail 4 to be fixed to the top rail 4 with screws 51,. The mounting holes 53 for mounting the second component plate 18 of the elastic damper 11 are formed at four locations in the horizontal direction. On the other hand, vertically extending elongated holes 54 for attaching the first component plate 17 of the viscoelastic damper 11 are vertically provided at two places at the center of the substrate 31 of the upper bracket 9 at intervals. Four are formed by shifting the positions.

  A plurality of through holes 55 are formed in the lower part of the first component plate 17 of the viscoelastic damper 11 in correspondence with the long holes 54. The second component plate 18 also has the through holes 55 formed in the second component plate 18 in order to use the first component plate 17 upside down. Since the through holes 55 also correspond to the mounting holes 53 of the top bracket 20, many of them are formed at positions corresponding to both. The slots between the top rail 4 and the upper bracket 9 are not constant, and the long holes 54,... And the through holes 55,. Then, with the upper part of the second component plate 18 of the viscoelastic damper 11 joined to the mounting plate 49 of the top bracket 20 mounted on the top rail 4, the mounting holes 53,. Are connected by screws 56,..., And the lower holes of the first component plate 17 are joined to the substrate 31 of the upper bracket 9 while the elongated holes 54,. , And are connected by screws 56,.

  The panel plate 7 has locking holes 59,... Formed at predetermined intervals in the vertical direction on back plates 58, 58 formed on both side edges on the back side. Then, the locking member 35 is screwed to the side surface of the column 6, and the locking holes 59 of the panel plate 7 are locked to upward hooks 60, 60 formed on both ends of the locking member 35, respectively. The panel plate 7 is supported. The mounting position of the locking tool 35 on the support column 6 is usually at a pitch of 50 cm from the lower end, and is also mounted at a position 100 to 150 mm below the uppermost position. According to the mounting position of the second locking tool 35 from the top, as shown in FIG. 8, the upper notch 36 is located at the upper side of the upper bracket 9, or as shown in FIG. 9 to select the position of the lower notch 36.

  In this way, the lower bracket 8 and the upper bracket 9 are connected between the specific columns 6 and 6, and the lower bracket 8 is fixed to the ground rail 5 and the floor structure 2. By connecting the visco-elastic dampers 11 between the upper bracket 9 and the top rail 4 via the top bracket 20 and attaching the panel plates 7, 7 on both front and back surfaces thereof, the vibration damping function is provided. The provided panel structure 3 is configured. On both sides or one side adjacent to the panel structure 3, partition panels having a normal structure are continuous, and the room is partitioned with a desired layout. In the present embodiment, the lower ends of the two braces 15, 15 of the X-shaped brace 10 are respectively connected to the columns 6 via the column brackets 16, but the column brackets 13 are attached to the vertical portions 13, 13 of the lower bracket 8. Although it is possible to omit the support bracket 16 by providing the function of the support bracket 16, the present embodiment is configured by a separate member in consideration of workability.

1 suspended ceiling structure, 2 floor structure,
3 intermediate structure, 4 sky rail,
5 ground rails, 6 pillars,
7 Panel board, 8 Lower bracket,
9 upper bracket, 10 X-shaped brace,
11 viscoelastic damper, 12 horizontal part,
13 vertical part, 14 concave groove,
15 braces, 16 post brackets,
17 first component plate, 18 second component plate,
19 viscoelastic body, 20 ceiling bracket,
21 concave groove, 22 ceiling support rail,
23 reinforcements, 24 adjusters,
25 top support member, 26 mounting plate,
27 evacuation part, 28 screw,
29 receiving member, 30 screw,
31 substrate, 32 reinforcing edge,
33 connecting plate, 34 screws,
35 locking device, 36 notch,
37 screws, 38 mounting holes,
39 screws, 40 bulges,
41 screws, 42 mounting holes,
43 support plate, 44 connecting plate,
45 screws, 46 notches,
47 mounting holes, 48 screws,
49 mounting plate, 50 connecting plate,
51 screw, 52 through hole,
53 mounting holes, 54 long holes,
55 through holes, 56 screws,
58 back plate, 59 locking hole,
60 Upward hook.

Claims (7)

Between the suspended ceiling structure constructed on the lower surface side of the upper slab and the floor structure constructed on the upper surface side of the lower slab, a panel structure having a vibration damping function is installed, and the suspended ceiling structure It is a vibration damping device of a suspended ceiling structure which suppresses rolling,
The panel structure is provided on both front and back surfaces between a pair of pillars erected at a predetermined interval between a ceiling rail attached to a lower surface of the suspended ceiling structure and a ground rail attached to an upper surface of the floor structure. Each panel board is attached, and in the space between the front and back panel boards, the lower ends of both columns are connected with the lower bracket, the upper portions of both columns are connected with the upper bracket, and both directly and indirectly to both columns The lower bracket is fixed to the floor structure together with the ground rail, and the upper end of the support is held so as to be in-plane displaceable with respect to the ceiling rail. A vibration damping device for a suspended ceiling structure, comprising a bracket and a ceiling rail connected by a viscoelastic damper.   The lower bracket includes a horizontal portion arranged along the ground rail and fixed to the ground rail, and a vertical portion rising upward at both ends of the horizontal portion and connecting to a lower end side surface of the support. 2. The vibration damping device for a suspended ceiling structure according to 1.   3. The ground rail according to claim 2, wherein the ground rail is a long member having a substantially U-shaped cross section having a concave groove opened upward, and a horizontal portion of the lower bracket is fitted in the concave groove of the ground rail. Suspended ceiling structure vibration control device.   The X-shaped brace is connected at the center intersection of the two braces, and the upper ends of both braces are connected to both ends of the upper bracket, and the lower ends of both braces are connected to the support via a support bracket. The vibration damping device for a suspended ceiling structure according to claim 1, wherein the vibration damping device is connected to a lower portion of the suspended ceiling structure.   The viscoelastic damper has a structure in which a viscoelastic body is bonded between overlapping portions of a first component plate extending downward and a second component plate extending upward, and a lower portion of the first component plate is attached to the upper bracket. The vibration damping device for a suspended ceiling structure according to any one of claims 1 to 4, wherein the vibration damping device is attached to a ceiling bracket fixed to the ceiling rail.   An earthquake-resistant partitioning device, wherein a vibration damping device for a suspended ceiling structure according to any one of claims 1 to 5 is provided in a part thereof.   A lower bracket fixed to the ground rail, an upper bracket connected between the upper portions of the two posts, a post bracket attached to the lower portion of the both posts, and a lower end bracket connected to the lower ends of the two posts provided at intervals. An X-shaped brace connecting both ends of the upper bracket and connecting the lower ends to the support brackets, a top bracket fixed to the top rail, and a viscoelastic damper connecting the top bracket and the top bracket, respectively. Become a vibration suppression unit.

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