JP6463636B2 - Seismic control ceiling structure - Google Patents

Description

  The present invention relates to a vibration control ceiling structure.

  As a ceiling structure to which an earthquake countermeasure has been taken, a structure in which a vibration damping device is attached to an interface between a ceiling plate material or a ceiling base and a wall is known (for example, see Patent Document 1). In this ceiling structure, a ceiling vibration control device is interposed between the outer periphery of the ceiling plate material and the wall surface at the corresponding position.

JP 2008-138464 A

By the way, according to the “Matters to stipulate a safe structure for the structural strength of specific ceilings and specific ceilings (2013 Ministry of Land, Infrastructure and Transport Notification No. 771)” announced by the Ministry of Land, Infrastructure, Transport and Tourism in recent years. In addition, the vertical surface earthquake force obtained by multiplying the total weight of the ceiling surface component and the ceiling surface component by the earthquake and other vibrations and impacts, and the vertical seismic intensity of 1 or more. It is stipulated that safety verification be performed on
However, although the ceiling structure of patent document 1 can obtain the vibration control effect in the horizontal direction, it cannot obtain the vibration control effect in the vertical direction (vertical direction).

  Therefore, an object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a seismic control ceiling structure capable of obtaining a seismic control effect against vertical earthquake motion.

The present invention for solving the above problems includes a suspension bolt suspended from an upper structure, a ceiling foundation attached to a lower end portion of the suspension bolt, a ceiling plate member fixed to the ceiling foundation, and the upper structure. A vertical vibration control device provided between a body and the ceiling base, and a horizontal vibration control device provided between a peripheral portion of the ceiling base and a wall, and the vertical vibration control device. The apparatus includes a bundle pillar suspended from the upper structure, and a lower end portion of the bundle pillar is interposed through a first damping material for dampening vertical movement of the ceiling base and the ceiling plate material. It is connected to the ceiling base, the bundle pillar is provided at an intermediate portion between the adjacent suspension bolts, and the first damping material includes a damping body having damping properties and an anti-vibration property having damping properties. It is composed of a viscoelastic body formed by laminating a vibration body, and the horizontal vibration damping device is separated from the wall. A base receiving member extending toward the ceiling base, and the side surface of the tip of the base receiving member is a second control for attenuating vertical and horizontal movements of the ceiling base and the ceiling plate material. The second damping material is connected to the ceiling base via a vibration material, and the second vibration damping material is composed of a viscoelastic body formed by laminating a damping body having damping properties and a damping body having vibration damping properties. It is a seismic control ceiling structure.

According to such a configuration, since the first vibration damping material provided at the lower end of the bundle pillar is deformed, the vertical movement of the ceiling plate material and the ceiling base can be absorbed. be able to. The first damping material is composed of a viscoelastic body formed by laminating a damping body having damping properties and a damping body having damping properties, so that both damping performance and damping performance are provided. The effect of. Furthermore, since the horizontal vibration control device can absorb both the horizontal motion and vertical motion of the ceiling foundation, not only the seismic control effect related to the horizontal seismic motion can be obtained but also the seismic control effect related to the vertical seismic motion can be enhanced. Also in the horizontal vibration damping device, both the damping performance and the vibration proof performance can be obtained.

In the vibration- damping ceiling structure of the present invention, the ceiling foundation is formed by combining a plurality of field edge receivers and a plurality of field edges in a lattice shape, and a lower end portion of the bundle pillar is connected to the field edge. It is preferable.

Further, in the vibration- damping ceiling structure of the present invention, the ceiling base is attached to a lower end portion of the suspension bolt via a suspension type vibration isolating member that prevents transmission of vibration between the suspension bolt and the ceiling foundation. It is preferable.

  In the seismic control ceiling structure of the present invention, a brace extending in two directions orthogonal to each other in a plan view is provided between the upper structure and the ceiling base, and the adjacent suspension bolts Of these, the upper end of the brace is preferably connected to the upper end of one of the suspension bolts, and the lower end of the brace is connected to the lower end of the other suspension bolt. According to such a configuration, the brace can efficiently suppress twisting and deformation of the ceiling surface. Moreover, the vibration control effect can be further enhanced by providing the braces in combination with the vertical vibration control device and the horizontal vibration control device. Furthermore, since the number of brace installation locations is small, it is possible to secure an installation space for various pipes arranged behind the ceiling. Therefore, it becomes easy to perform piping construction work.

  ADVANTAGE OF THE INVENTION According to this invention, the damping effect with respect to a vertical earthquake motion can be acquired in a ceiling structure.

It is the figure which showed the damping ceiling structure which concerns on embodiment of this invention, Comprising: (a) is a whole top view, (b) is a side view. It is the figure which showed the attachment state of the vertical damping device of the seismic-control ceiling structure which concerns on embodiment of this invention, Comprising: (a) is the side view seen in the direction along a field edge receiver, (b) is a field It is the side view seen in the direction along the edge. It is the perspective view which showed the attachment state of the vertical damping device of the damping ceiling structure which concerns on embodiment of this invention. It is the figure which showed the attachment state of the horizontal damping device of the damping ceiling structure which concerns on embodiment of this invention, Comprising: (a) is a side view, (b) is a top view. It is the perspective view which showed the attachment state of the horizontal damping device of the damping ceiling structure which concerns on embodiment of this invention. It is the figure which showed the attachment state of the modification of the horizontal damping device of the damping ceiling structure which concerns on embodiment of this invention, Comprising: (a) is the side view which showed the form attached to the field edge receiver, (b) FIG. 4 is a side view showing a form attached to a field edge. It is the side view which showed the attachment state of the brace of the damping ceiling structure which concerns on embodiment of this invention.

  As shown in FIG. 1, the damping ceiling structure 1 according to the embodiment of the present invention includes a suspension bolt 3 suspended from an upper structure 2 (see FIG. 1B) and a lower end portion of the suspension bolt 3. The ceiling base 4 attached to the ceiling base 5, the ceiling plate member 5 fixed to the ceiling base 4, the vertical vibration damping device 10, the horizontal vibration damping device 20, and the brace 30.

  The upper structure 2 is a ceiling slab (upper floor slab), a roof slab, a beam, or the like. In this embodiment, although the upper structure 2 consists of a reinforced concrete member, the material of the upper structure 2 is not limited. Moreover, although the upper structure 2 is formed horizontally, the upper structure 2 may be inclined.

  The suspension bolt 3 is a long bolt. A plurality of suspension bolts 3 are provided above the ceiling base 4 at a predetermined pitch in the left and right direction and the vertical direction in FIG. The upper end of the suspension bolt 3 is screwed into a nut member (not shown) embedded in the upper structure 2. A suspension type vibration isolator 50 is provided at the lower end of the suspension bolt 3.

As shown in FIGS. 2 and 3, the suspension type vibration isolator 50 is a member for preventing transmission of vibration between the suspension bolt 3 and the ceiling base 4, and a lower end portion of the suspension bolt 3, It is interposed between the ceiling base 4.
The suspension type vibration isolator 50 includes a cylindrical hanger portion 51, an elastic rubber 52, and a through bolt 53.
The cylindrical hanger part 51 has a cylindrical shape with a rectangular cross section when viewed from the side. Bolt through holes are formed in the upper surface portion and the lower surface portion of the cylindrical hanger portion 51, respectively. The lower end portion of the suspension bolt 3 is inserted into the upper surface portion of the cylindrical hanger portion 51. The suspension bolt 3 is fixed to the upper surface portion of the tubular hanger portion 51 by nuts arranged above and below the upper surface portion of the tubular hanger portion 51.
The elastic rubber 52 is provided inside the tubular hanger portion 51 and above the lower surface portion of the tubular hanger portion 51. The elastic rubber 52 is provided with bolt through holes. The bolt through hole is formed so as to be coaxial with the bolt through hole in the lower surface portion of the cylindrical hanger portion 51. The elastic rubber 52 may be provided below the upper surface portion in addition to the lower surface portion.
The through bolt 53 is inserted through the lower surface portion of the cylindrical hanger portion 51 and the elastic rubber 52, and is fixed to the elastic rubber 52 by a nut disposed on the upper side of the elastic rubber 52. An attachment hanger 6 that supports the ceiling base 4 is fixed to the lower end portion of the through bolt 53.

The ceiling base 4 is formed by combining a plurality of rod-shaped members (a plurality of field edges 4a and a plurality of field edge receivers 4b) in a lattice shape. The plurality of field edges 4a are arranged in parallel to each other, and the plurality of field edge receivers 4b are arranged in parallel to each other and are orthogonal to the field edges 4a.
The field edge 4 a is a bar-like member that holds the ceiling plate material 5, and is disposed on the upper side of the ceiling plate material 5. The field edge 4a of the present embodiment has a lip groove shape with a C-shaped cross section, and is arranged so that the web is on the lower side. The field edge 4 a is connected to the upper surface of the ceiling board material 5 in a state where the web is in contact with the upper surface of the ceiling board material 5, and supports the ceiling board material 5.

The field edge receiver 4b is a rod-like member that holds the field edge 4a, and is disposed on the upper side of the field edge 4a. The field edge receiver 4b of the present embodiment is configured by a channel material having a groove shape in cross section, and is disposed in a state where a pair of flanges are positioned vertically and the web stands. The field edge receiver 4b is connected to the field edge 4a in a state where the lower flange is in contact with the lip portion on the upper surface of the field edge 4a. The field edge 4a and the field edge receiver 4b are connected via a known connection fitting. The field edge receiver 4b is not limited to the above-described configuration, and may be formed of, for example, a lip groove steel having a C-shaped cross section. Moreover, the fixing method of the field edge 4a and the field edge receiver 4b is not limited to a connection metal fitting, For example, you may fix directly with a bis | screw etc.
The field edge receiver 4 b is suspended from the suspension type vibration isolator 50 via the mounting hanger 6. As shown in FIG. 3, the mounting hanger 6 has a C shape in a side view, and is fixed to the lower end portion of the through bolt 53 via a nut. Further, the mounting hanger 6 holds the field receiver 4b by covering the field receiver 4b from the lower surface side and both side surfaces with the vertical piece 6b, the bottom plate piece 6c, and the rising piece 6d. In addition, the shape of the attachment hanger 6 is an example, Comprising: Another shape may be sufficient.

  The vertical vibration damping device 10 is a vibration damping device that mainly absorbs vertical earthquake motion. As shown in FIG. 2, the vertical vibration damping device 10 includes a bundle pillar 11 that is suspended from the upper structure 2.

The bundle pillar 11 is connected to the ceiling base 4 via a damping material 12 (first damping material) disposed at the lower end portion thereof. In a place close to the center of the room (a place away from the wall), the bundle pillar 11 is provided at an intermediate part of the adjacent suspension bolts 3 and 3 (a central part of the span of the edge receiver 4b). Specifically, among the plurality of suspension bolts 3 that support the field receiver 4b, a bundle pillar 11 is provided at an intermediate position between a pair of adjacent suspension bolts 3 and 3 (in FIG. 1A). Vertical vibration control device 10) between X4 and X5. In a place close to the periphery of the room (a place close to the wall), the bundle pillar 11 is provided near the suspension bolt 3 near the center of the room among the adjacent suspension bolts 3 and 3 (FIG. a) Vertical vibration damping device 10 between X1 and X2 and vertical vibration damping device 10 between X6 and X7.
The bundle pillar 11 of this embodiment consists of a rectangular pipe with a rectangular cross section, and is disposed above the field edge 4a. A gap is provided between the lower end surface of the bundle pillar 11 and the upper surface of the field edge 4a.
The upper end surface of the bundle pillar 11 is in contact with the lower surface of the upper structure 2. The upper end portion of the bundle pillar 11 is fixed to the upper structure 2 via a pair of mounting brackets 13 and 13. The mounting bracket 13 is made of, for example, an angle material having an L-shaped cross section.
As shown in FIG. 3, a pair of mounting brackets 14, 14 are provided on the side of the lower end portion of the bundle pillar 11. The mounting bracket 14 is made of, for example, an angle material having an L-shaped cross section. The mounting brackets 14 and 14 are disposed so as to sandwich the lower end portion of the bundle pillar 11 from both sides in the extending direction of the field receiver 4b. Each mounting bracket 14 is disposed with a gap facing the side surface of the bundle pillar 11, and is bolted to the upper surface of a fixing cover 15 that covers the field edge 4a from above. The fixing cover 15 has a groove shape whose cross-sectional shape opens downward, and is covered from above the field edge 4a. Both side surfaces of the fixing cover 15 are screwed to both side surfaces of the field edge 4a (see FIGS. 2 and 3).
In the present embodiment, the bundle pillar 11 of the vertical vibration damping device 10 is connected to the field edge 4a, but may be connected to the field edge receiver 4b. However, when the bundle pillar 11 is connected to the field edge receiver 4b, it is necessary to reinforce the field edge receiver 4b. Therefore, it is preferable to connect to the field edge 4a.

  The damping material 12 is provided between the bundle pillar 11 and the mounting bracket 14. The damping material 12 has a plate shape, and is composed of a viscoelastic body formed by laminating rubber (anti-vibration body) having anti-vibration performance and rubber (damping body) having anti-vibration performance. Yes. The damping material 12 is fixed to the side surface of the bundle pillar 11 and the back surface of the angle material using an adhesive or a double-sided tape.

  The horizontal vibration damping device 20 is a vibration damping device that absorbs both horizontal and vertical earthquake motion. The horizontal vibration damping device 20 is provided at a plurality of locations (each end of the field edge 4a and the field edge receiver 4b) on the peripheral edge of the ceiling surface (see FIG. 1 (a) and FIG. 5). As shown in FIGS. 4 and 5, the horizontal vibration damping device 20 is interposed between the base receiving member 21 fixed to the member constituting the wall, and the base receiving member 21 and the end of the ceiling base 4. Vibration damping material 22 (second damping material).

As shown in FIG. 4, the base receiving member 21 of the present embodiment is made of, for example, a channel material having a groove shape in cross section, and extends horizontally from the wall 7 toward the side of the ceiling base 4. The base receiving member 21 is not limited to the channel material.
The base receiving member 21 connected to the field receiver 4b extends from the wall 7 in which the extending direction of the field receiver 4b is a normal line, and is orthogonal to the wall 7 (in the field receiver 4b). (Parallel direction). The base receiving member 21 is provided at the same height as the field receiving 4b. The side surface of the front end portion of the foundation receiving member 21 is connected to the field edge receiving 4 b (ceiling foundation 4) via the damping material 22.
As shown in FIG. 5, the base receiving member 21 connected to the field edge 4a extends from a wall (not shown) in which the extending direction of the field edge 4a is a normal line, and has the same height as the field edge 4a. Is provided. That is, the base receiving member 21 is arranged in parallel and at the same height as the ceiling base 4 (the field edge 4a or the field edge receiver 4b) to be connected.

  As shown in FIGS. 4B and 5, the base end portion of the base receiving member 21 is in contact with the side surface of the wall base 8 and is fixed to the side surface of the wall base 8 with bolts or screws. The wall surface material 9 adhered to the wall base 8 is provided with a through hole 9a for allowing the base receiving member 21 to pass therethrough. The through hole 9 a is formed to be slightly larger than the cross section of the base receiving member 21, and allows the base receiving member 21 to move left and right and up and down.

The tip of the base receiving member 21 faces the side surface of the field edge receiving 4b. A damping material 22 (second damping material) is provided between the base receiving member 21 and the field edge receiving 4b.
The damping material 22 has a plate shape, and is composed of a viscoelastic body formed by laminating rubber (anti-vibration body) having anti-vibration performance and rubber (damping body) having anti-vibration performance. Yes. The damping material 22 is fixed to the side surface of the base receiving member 21 and the side surface of the field receiving member 4b using an adhesive or a double-sided tape.

  In FIG. 4, the base receiving member 21 is connected to one side surface of the field receiver 4b. However, the base receiving member 21 is provided on both sides of the field receiver 4b so as to sandwich the field receiver 4b. May be. In this case, the damping material 22 is disposed so as to sandwich both side surfaces of the end portion of the field edge receiver 4b, and is bonded to both side surfaces.

Next, the configuration of the horizontal vibration damping device 20 that is employed when the base receiving member 21 cannot be installed at the same height as the ceiling base 4 due to interior and design restrictions and the like will be described with reference to FIG. FIG. 6 shows an example in which a curtain box 24 is provided between the ceiling and the wall 7.
The base receiving member 21 is provided on the upper part of the curtain box 24 and extends from the side surface of the wall base 8 above the field receiving 4b. The base end portion of the base receiving member 21 is fixed to the side surface (front side in FIG. 6) of the wall base 8 with bolts or screws. A connection bracket 25 is provided on the side of the tip of the base receiving member 21.
The connection bracket 25 is made of, for example, a channel material having a groove shape in cross section, and is fixed to the side surface of the field edge receiver 4b (see FIG. 6A) or the side surface of the field edge 4a (see FIG. 6B). Yes. The connection bracket 25 is not limited to the channel material. The connection bracket 25 rises upward from the side surface of the field edge receiver 4b or the field edge 4a. The web portion of the base receiving member 21 faces the web portion of the connection bracket 25 with a gap. A damping material 22 is provided between the base receiving member 21 and the connection bracket 25.
The damping material 22 is fixed to the side surface of the base receiving member 21 and the side surface of the connection bracket 25 using an adhesive or a double-sided tape.

As shown to (a) of FIG. 1, when the ceiling surface is a rectangular shape, the brace 30 is provided in the corner | angular part of a ceiling surface. The brace 30 is made of, for example, a channel material having a U-shaped cross section. The brace 30 is not limited to the channel material, and may have other shapes such as an angle material and a square pipe.
Below, the attachment position of the brace 30 is demonstrated taking the lower left part of Fig.1 (a) as an example. In FIG. 1 (a), X1, X2,... Streets from the lower left to the upper side of the paper, and Y1, Y2. The Xn street is along the field edge 4b, and the Yn street is along the field edge 4a.
The brace 30 of the present embodiment has one inner side (X2 and Y2 directions) one by one in the X-axis direction and the Y-axis direction than the suspension bolt 3 at the outermost side (FIG. 1 (a) intersection of X1 and Y1). Centering on the suspension bolt 3 provided at the intersection point), it is arranged in an L shape so as to extend in two directions (X-axis direction and Y-axis direction) orthogonal to each other in plan view.
The brace 30 includes a first brace 30a and a second brace 30b arranged in a direction orthogonal to the first brace 30a in plan view. The first brace 30a is spanned between the suspension bolts 3 provided at the intersections of the X2 and Y2 ways and the suspension bolts 3 provided at the intersections of the X3 and Y2 ways. The second brace 30b is bridged between the suspension bolts 3 provided at the intersections of the X2 and Y2 ways and the suspension bolts 3 provided at the intersections of the X2 and Y3 ways.

  In addition, if it is not a rectangular shape, such as a passage is provided at the corner of the ceiling surface, if the brace 30 is provided at the corner of the entrance or the corner of the exit near the passage Good.

  As shown in FIG. 7, the first brace 30a is inclined so that the end portion on the second brace 30b side is lowered. The lower end of the first brace 30a is welded to the lower end of the suspension bolt 3 (above the suspension type vibration isolator 50). The upper end portion of the first brace 30a is welded to the upper end portion of the adjacent suspension bolt 3 (in the vicinity of the upper structure 2).

  The second brace 30b is inclined so that the end on the first brace 30a side is lowered. The lower end of the second brace 30b is welded to the lower end of the suspension bolt 3 (above the suspension type vibration isolator 50). The lower end of the second brace 30b is fixed by changing the mounting height so as not to interfere with the lower end of the first brace 30a. The upper end of the second brace 30b is welded to the upper end of the adjacent suspension bolt 3 (in the vicinity of the upper structure 2).

  The method of fixing the brace 30 and the suspension bolt 3 is not limited to welding, and a known mounting bracket may be used. Further, the lower end of the brace 30 may be fixed to the suspension type vibration isolator 50 instead of the suspension bolt 3.

  In the seismic control ceiling structure 1 configured as described above, when vertical seismic motion is applied during an earthquake, the vibration damping material 12 of the vertical vibration control device 10 is deformed in the vertical direction, so that the ceiling plate material 5 and the ceiling base 4 Can absorb up and down movement. At this time, since there is a gap between the lower end of the bundle pillar 11 and the ceiling foundation 4, even if the ceiling foundation 4 is pushed up, the ceiling foundation 4 and the bundle pillar 11 can be prevented from interfering with each other. Further, since the vibration damping material 12 is composed of a viscoelastic body formed by laminating a rubber having a vibration proof performance and a rubber having a vibration proof performance, the effects of both the vibration proof performance and the damping performance can be obtained. It is done.

  Furthermore, in the vibration control ceiling structure 1, the vertical vibration control device 10 is provided at the center of the span of the ceiling base 4 that is most affected by the vertical earthquake motion, so that the vertical movement of the ceiling plate material 5 and the ceiling base 4 can be efficiently performed. Can be absorbed into. Thus, if the vertical damping device 10 is arranged, it is possible to obtain a damping effect related to vertical earthquake motion.

  In addition, since the damping material 12 should just adhere | attach to the bundle pillar 11 and the attachment bracket 13, it is easy to construct while having a simple structure. When the ceiling is high, it is necessary to construct with a scaffold. Therefore, the ceiling material is desired to be as light and simple as possible, but according to the seismic control ceiling structure 1, this is achieved. it can.

Furthermore, since the horizontal vibration damping device 20 is provided at the peripheral edge of the ceiling surface, a further vibration damping effect can be obtained. Specifically, since the side surface of the tip portion of the foundation receiving member 21 of the horizontal vibration damping device 20 is connected to the side surface of the ceiling foundation 4 via the damping material 22, the damping material 22 is in the horizontal direction and the vertical direction. Thus, both the horizontal movement and the vertical movement of the ceiling board material 5 and the ceiling base 4 can be absorbed. In addition, since the vibration damping material 22 is composed of a viscoelastic body formed by laminating rubber having anti-vibration performance and rubber having anti-vibration performance, the anti-vibration performance in both the horizontal and vertical directions Both effects of attenuation performance can be obtained.
In this way, if the horizontal vibration damping device 20 is arranged, not only the vibration control effect related to the horizontal ground motion can be obtained, but also the vibration control effect related to the vertical vibration can be enhanced in addition to the vibration control effect of the vertical vibration control device 10. it can.

  Further, since the horizontal vibration damping device 20 is provided at both ends of the field edge 4a and both ends of the field edge receiver 4b, it can absorb horizontal movement in all directions.

  Furthermore, if the base receiving member 21 and the vibration damping material 22 are provided on both sides of the ceiling base 4 (the field edge 4a or the field edge receiver 4b) and the end portion of the ceiling base 4 is sandwiched, the horizontal vibration damping is provided. The vibration control effect of the device 20 can be further enhanced.

  Further, by providing braces 30 extending in two directions of the X-axis direction and the Y-axis direction at the corners of the ceiling surface, the horizontal movement of the ceiling base 4 is restricted, and the suspension bolt 3 and the ceiling base 4 are Twist and deformation can be suppressed. That is, by providing the brace 30, the vibration control effect can be further enhanced. Furthermore, the number of installation locations of the braces 30 is significantly smaller than when the horizontal movement of the ceiling base 4 is restricted by the braces 30 alone, thus securing the installation space for various pipes arranged on the back of the ceiling. can do. This makes it easier to carry out the piping work and reduces the amount of miscellaneous objects on the ceiling, reducing interference between ceiling equipment such as air conditioning ducts and piping and ceiling structures, and restricting various piping routes. Disappear.

  According to the seismic control ceiling structure 1 as described above, a seismic control effect in the vertical direction (vertical direction) can be obtained as a structure corresponding to the Ministry of Land, Infrastructure, Transport and Tourism Notification No. 771 in 2013.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably. For example, in the above-described embodiment, the vertical vibration damping device 10 is provided near the center of the ceiling surface, but may be provided at the peripheral portion of the ceiling surface.

  Moreover, in the said embodiment, although the damping materials 12 and 22 are comprised by the viscoelastic body formed by laminating | stacking the rubber | gum with the vibration proof performance, and the rubber | gum with the damping performance, it is limited to this. It is not something. The vibration damping materials 12 and 22 may be made of an elastic body having vibration proof performance.

1 Seismic control ceiling structure 2 Superstructure 3 Suspension bolt 4 Ceiling base 4a Field edge (bar-shaped body)
4b Field guard (bar)
5 Ceiling board material 10 Vertical vibration damping device 11 Bunch pillar 12 Damping material (first damping material)
20 Horizontal type damping device 21 Base receiving member 22 Damping material (second damping material)
30 braces

Claims (4)

A suspension bolt suspended from the upper structure, a ceiling base attached to a lower end of the suspension bolt, a ceiling plate member fixed to the ceiling base, and provided between the upper structure and the ceiling base. A vertical vibration damping device, and a horizontal vibration damping device provided between the peripheral edge of the ceiling base and the wall ,
The vertical vibration damping device includes a bundle pillar suspended from the upper structure, and a lower end portion of the bundle pillar is a first damping for attenuating vertical movement of the ceiling base and the ceiling plate material. It is connected to the ceiling base via a vibration material,
The bundle pillar is provided in an intermediate portion of the adjacent hanging bolts,
The first damping material is composed of a viscoelastic body formed by laminating a damping body having damping properties and a damping body having damping properties,
The horizontal vibration damping device includes a base receiving member that extends from the wall toward the ceiling base, and a side surface of a tip portion of the base receiving member has a vertical movement and a horizontal movement of the ceiling base and the ceiling plate material. Connected to the ceiling substrate via a second damping material for damping the movement,
The second damping material is constituted by a viscoelastic body formed by laminating a damping body having damping properties and a damping body having damping properties . The ceiling foundation is formed by combining a plurality of field edges and a plurality of field edges in a lattice pattern,
The seismic control ceiling structure according to claim 1 , wherein a lower end portion of the bundle pillar is connected to the field edge . The said ceiling base is attached to the lower end part of the said suspension bolt via the suspension type vibration isolator which prevents transmission of a shake between the said suspension bolt and the said ceiling foundation. The seismic control ceiling structure according to claim 2. Between the upper structure and the ceiling base, there are provided braces extending in two directions orthogonal to each other in plan view,
Of the adjacent hanging bolts, the upper end of the brace is connected to the upper end of one of the hanging bolts,
The seismic control ceiling structure according to any one of claims 1 to 3 , wherein a lower end portion of the brace is connected to a lower end portion of the other suspension bolt.

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