Anti-vibration structure

Abstract

To suppress vibration of ceiling materials without applying bending force to a wall body and without using braces.SOLUTION: An anti-vibration structure includes a wall body 30 divided into an upper wall portion 32 fixed to an upper slab (slab 12A) and a lower wall portion 34 fixed to a lower slab (lower slab 12B), a steel frame 40 fixed to the structural body (beam 14) of a building 10 and pin-joined to the upper wall portion 32 to form a truss together with the upper wall portion 32, and a ceiling material 50 suspended from the upper slab and positioned opposite the steel frame 40.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an anti-vibration structure. [Background technology]

[0002] The following Patent Document 1 describes a suspended ceiling structure in which shock absorbing materials are interposed between the edge of the ceiling and the building components. This prevents the edge of the ceiling from directly colliding with the building components, and allows the shock absorbing materials to absorb and reduce the impact force. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-155579 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the structure shown in the above-mentioned Patent Document 1, for example, the edge of the ceiling is prevented from directly colliding with the wall as a building component, but a bending force acts on the wall via the shock absorbing material. The application of such a bending force to the wall may be undesirable in terms of strength.

[0005] One possible solution would be to install high-rigidity pillars in front of the wall to prevent vibration, but this would be expensive and time-consuming to install.Another possible solution would be to install braces to prevent the ceiling from vibrating.However, in cases where a large amount of equipment is installed in the ceiling, such as in a theater, it can be difficult to install a sufficient number of braces.

[0006] In consideration of the above, the present invention aims to suppress vibration of a ceiling material without applying bending force to a wall and without using braces. [Means for solving the problem]

[0007] The vibration prevention structure of claim 1 comprises a wall body divided into an upper wall portion fixed to an upper slab and a lower wall portion fixed to a lower slab, a steel frame fixed to the building structure and pin-joined to the upper wall portion to form a truss together with the upper wall portion, and a ceiling material suspended from the upper slab and positioned opposite the steel frame.

[0008] In the vibration prevention structure of claim 1, the wall body is divided into an upper wall portion fixed to the upper slab and a lower wall portion fixed to the lower slab. The upper wall portion is pin-jointed to a steel frame fixed to a beam supporting the upper slab to form a truss. A ceiling material is suspended from the upper slab so as to face the steel frame.

[0009] Even if the steel frame is pressed sideways by the ceiling material during an earthquake, the steel frame and the upper wall form a truss, so axial force acts on the upper wall but no bending force acts on it. Also, because the lower wall is separate from the upper wall, no external force acts on the lower wall. This prevents bending force from acting on the wall.

[0010] Furthermore, because the ceiling material is prevented from vibrating by the steel frame, vibration of the ceiling material can be suppressed without the use of braces.

[0011] The vibration prevention structure of claim 2 is the vibration prevention structure of claim 1, in which the ceiling material is suspended from the upper slab via vibration-proof material, and vibration-proof material is arranged between the ceiling material and the steel frame.

[0012] In the vibration prevention structure of claim 2, vibration-proofing material is interposed between the upper slab and the steel frame and the ceiling material. This makes it possible to suppress the propagation of sound to the outside of the room, for example, due to the influence of an acoustic device in the room below the ceiling material.

[0013] The vibration prevention structure of claim 3 is the vibration prevention structure of claim 1 or 2, in which a floating floor is arranged on the lower slab via a vibration-proof material.

[0014] In the vibration prevention structure of claim 3, a floating floor is placed on the lower slab via a vibration-proof material. This makes it possible to suppress the propagation of sound to the outside of the room, for example, caused by walking in the room above the floating floor. Effect of the Invention

[0015] According to the present invention, vibration of a ceiling material can be suppressed without applying bending force to a wall body and without using braces. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is an elevational view showing an anti-vibration structure according to an embodiment of the present invention. [Diagram 2] FIG. 1A is a plan view showing an outline of an anti-vibration structure according to an embodiment of the present invention, and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a vibration prevention structure according to an embodiment of the present invention will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and may be present in multiple numbers.

[0018] In addition, explanations of configurations and symbols that are duplicated in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations, replacing them with different configurations, or combining one embodiment and various modified examples, within the scope of the purpose of the present disclosure.

[0019] In each drawing, the directions indicated by the arrows X and Y are directions along a horizontal plane and are perpendicular to each other. The direction indicated by the arrow Z is a direction along the vertical direction (up and down direction). The directions indicated by the arrows X, Y, and Z in each drawing are assumed to be mutually consistent.

[0020] <Anti-vibration structure> 1 shows a vibration prevention structure 20 according to an embodiment of the present invention. This vibration prevention structure 20 is applied to a building 10. One example of the building 10 is a facility where sound is generated indoors, such as a theater or concert hall. Note that the use of the building 10 is not particularly limited.

[0021] The vibration prevention structure 20 is constructed in the space between the upper and lower slabs 12A and 12B, and is constructed with a wall body 30, a steel frame 40, a ceiling material 50 and a floating floor 60.

[0022] The slab 12A is a slab disposed above the slab 12B, and is an example of an upper slab in the present invention. The slab 12B is an example of a lower slab in the present invention. The slabs 12A and 12B are made of reinforced concrete and are supported by a steel-framed beam 14 such as an H-shaped steel beam. The beam 14 may be made of reinforced concrete.

[0023] (wall) The wall body 30 is divided into an upper wall portion 32 and a lower wall portion 34. The upper wall portion 32 and the lower wall portion 34 are soundproof walls made of precast concrete. The upper wall portion 32 and the lower wall portion 34 can be constructed including a soundproofing material such as glass wool or urethane foam. The upper end portion of the upper wall portion 32 is fixed to the slab 12A by a pin joint. The lower end portion of the lower wall portion 34 is fixed to the slab 12B. The upper wall portion 32 and the lower wall portion 34 are arranged in the same plane, and a slit S is formed between the upper wall portion 32 and the lower wall portion 34.

[0024] (Steel frame) The steel frame 40 is a steel member fixed to the beams 14 and joined to the upper wall portion 32. The steel frame 40 is configured to include one vertical member 42 extending in the vertical direction, two horizontal members 44, 46 extending in the horizontal direction, and a diagonal member 48.

[0025] The upper ends of the upper and lower members 42 are rigidly joined to the beam 14. In addition, one ends of cross members 44 and 46 are joined to the upper and lower ends of the upper and lower members 42, respectively. The other ends of each of the cross members 44, 46 are joined to the upper wall portion 32 by pins.

[0026] Specifically, a fastener 70 is fixed to the end of the cross member 44 arranged on the upper side. The fastener 70 is a member integrated with the upper wall portion 32. The vertical load of the upper wall portion 32 is transmitted to the steel frame 40 via the fastener 70.

[0027] Additionally, a fastener 72 is fixed to the end of the cross member 46 arranged on the lower side. The fastener 72 is also a member integrated with the upper wall portion 32. The fastener 72 suppresses the upper wall portion 32 and the steel frame 40 from swaying sideways relative to each other.

[0028] The diagonal member 48 is a steel member that extends in a direction intersecting with the upper and lower members 42 and the cross members 44, 46. The diagonal member 48 is bridged from an end of the cross member 44 that is joined to the upper and lower members 42 to an end of the cross member 46 that is joined to the upper wall portion 32, and is joined to the cross members 44 and 46.

[0029] With the above-mentioned configuration, the steel frame 40 forms a truss structure together with the upper wall portion 32. In this truss structure, the upper wall portion 32 functions as an upper chord member, the upper and lower members 42 function as lower chord members, the cross members 44 and 46 function as beam members, and the diagonal member 48 functions as a diagonal member.

[0030] As shown in Fig. 2(A), a plurality of steel frames 40 are provided along the Y direction. That is, a plurality of steel frames 40 are provided along the extension direction of the beams 14 (see Fig. 1), and each is fixed to the beams 14. The steel frames 40 are disposed in positions facing the rafters 52A.

[0031] Although not shown in Fig. 1, as shown in Fig. 2(A), a plurality of steel frames 40 are provided along the X direction. These steel frames 40 can also be fixed to beams (not shown). These steel frames 40 are disposed in positions facing the joist support 52B.

[0032] If the pitch of the steel frame 40 does not match the pitch of the rafters 52A and rafter receivers 52B, adjacent steel frames 40 may be connected to each other with connecting members 40A as shown in Fig. 2(B). In this case, the vibration-proof rubber 82 can be disposed between the connecting members 40A and the ceiling material 50 (rafters 52A or rafter receivers 52B).

[0033] (Ceiling material) The ceiling material 50 is configured to include a base material 52 and a finishing material 54. The configuration of the base material 52 is not particularly limited, but includes, for example, a siding 52A and a siding support 52B. The siding 52A is a steel material extending in the left-right direction (X direction) of the paper surface of FIG. 1, and a plurality of sidings are arranged side by side in the Y direction. The finishing material 54 is fixed to the siding 52A.

[0034] The siding support 52B is a steel member extending along the Y direction, and multiple members are arranged in the X direction. The siding support 52B is fixed to the siding 52A using clips or the like (not shown). The siding support 52B is fixed to a hanging bolt 58 via a hanger 56. The hanging bolt 58 is a support member that supports the base material 52 and the finishing material 54 in a state where they are suspended from the slab 12A.

[0035] (Anti-vibration rubber) Anti-vibration rubber 80 is provided on the hanging bolt 58. As a result, the ceiling material 50 is suspended from the slab 12A via the anti-vibration rubber 80.

[0036] In addition, anti-vibration rubber 82 is also arranged between the ceiling material 50 and the steel frame 40. Specifically, a fixing member 74 is fixed to the side of the steel frame 40 facing the ceiling material 50. Anti-vibration rubber 82 is fixed to the upper surface of this fixing member 74. In addition, a pressing member 76 is provided at the end of the rough joist 52A. This pressing member 76 is arranged in contact with or fixed to the anti-vibration rubber 82 in the lateral direction. Note that in the present invention, it is sufficient that anti-vibration rubber 82 is arranged between the steel frame 40 and the ceiling material 50, and the configuration is not particularly limited.

[0037] 1 shows the configuration of one end of the ceiling material 50 in the X direction, the configuration of the other end of the ceiling material 50 in the X direction is the same. In other words, a wall body 30 and a steel frame 40 are constructed also at the other end of the ceiling material 50 in the X direction.

[0038] For this reason, for example, if the ceiling material 50 attempts to move to the left side of the paper in Fig. 1 during an earthquake, the displacement is suppressed by the steel frame 40 and upper wall portion 32 shown in Fig. 1. Note that if the pressing member 76 and the vibration-isolating rubber are fixed, even if the ceiling material 50 attempts to move to the right side of the paper in Fig. 1 during an earthquake, the displacement is suppressed by the steel frame 40 and upper wall portion 32 shown in Fig. 1. Also, if the ceiling material 50 attempts to move to the right side of the paper in Fig. 1, the displacement is suppressed by the steel frame 40 and upper wall portion 32 not shown in Fig. 1.

[0039] In other words, in the vibration prevention structure 20 of the present disclosure, the ceiling material 50, the steel frame 40 provided at both ends of the ceiling material 50, and the upper wall portion 32 form a ceiling structure with higher rigidity compared to a configuration without the steel frame 40.

[0040] (Floating floor) A floating floor 60 is placed on the slab 12B. In addition, a vibration-proof material 84 is placed between the slab 12B and the floating floor 60. As the vibration-proof material 84, various materials can be used, such as vibration-proof rubber, gel mount vibration-proof material, glass wool, rock wool, etc.

[0041] <Action and Effects> In the vibration prevention structure 20 according to the embodiment of the present invention, the wall body 30 is divided into an upper wall portion 32 fixed to the upper slab 12A and a lower wall portion 34 fixed to the lower slab 12B. The upper wall portion 32 is pin-joined to a steel frame 40 fixed to the beam 14 supporting the slab 12A to form a truss. A ceiling material 50 is suspended from the slab 12A so as to face the steel frame 40.

[0042] Even if the steel frame 40 is pressed laterally (in the X direction) by the ceiling material 50 during an earthquake or the like, since the steel frame 40 and the upper wall portion 32 form a truss, an axial force acts on the upper wall portion 32 but no bending force acts on it. Also, since the lower wall portion 34 is separated from the upper wall portion 32, no external force acts on the lower wall portion 34. This prevents bending forces from acting on the wall body 30.

[0043] Furthermore, because the ceiling material 50 is prevented from vibrating by the steel frame 40, vibration of the ceiling material 50 can be suppressed without using braces.

[0044] Furthermore, in the anti-vibration structure 20 according to the embodiment of the present invention, anti-vibration rubbers 80 and 82 are interposed between the slab 12A and the steel frame 40, and the ceiling material 50. This makes it possible to suppress the propagation of sound to the outside of the room, for example due to the influence of an acoustic device in the room below the ceiling material 50. This provides a high sound propagation suppression effect when the building 10 is used for purposes such as a concert hall or movie theater. In addition, the anti-vibration structure 20 can also suppress the propagation of noise generated outside the room into the room.

[0045] Moreover, in the vibration prevention structure 20 according to the embodiment of the present invention, the floating floor 60 is placed on the slab 12B via the vibration-proof material 84. This makes it possible to suppress the propagation of sound to the outside of the room, for example, due to the effect of walking in the room above the floating floor 60. Therefore, the vibration prevention effect is high when the building 10 is used for purposes such as a theater or a dance studio.

[0046] <Other embodiments> In the above embodiment, the steel frame 40 is fixed to the beams 14, but the embodiment of the present invention is not limited to this. For example, the steel frame 40 may be fixed to the framework of the building 10, such as a pillar or slab 12A (not shown). This allows the wall body 30 to be arranged regardless of the arrangement of the beams 14.

[0047] In addition, in the above embodiment, the ceiling material 50 is suspended from the slab 12A via vibration-proof rubber 80, and vibration-proof rubber 82 is also arranged between the ceiling material 50 and the steel frame 40, but the embodiment of the present invention is not limited to this.

[0048] For example, even if at least one of the vibration-isolating rubbers 80 and 82 is not provided, the effect of suppressing vibration of the ceiling material 50 can be obtained without applying a bending force to the wall body 30 and without using a brace.

[0049] In addition, in the above embodiment, the floating floor 60 is disposed on the slab 12B via the vibration-proof material 84, but the embodiment of the present invention is not limited to this. For example, even if such a floating floor 60 is not provided, it is possible to obtain the effect of suppressing vibration of the ceiling material 50 without applying bending force to the wall body 30 and without using braces.

[0050] In addition, in the above embodiment, the vibration of the ceiling material 50 can be suppressed without using a brace, but the present invention does not necessarily prohibit the use of a brace. In other words, the present invention does not require the use of a brace, but a configuration in which a brace is used is also included in the present invention. For example, the ceiling material 50 may be partially supported using a brace. In this way, the present invention can be embodied in various forms. [Explanation of symbols]

[0051] 12A Slab (Upper Slab) 12B Slab (Lower Slab) 14 Beam (framework) 20 Anti-vibration structure 30 wall 32 Upper wall 34 Lower wall part 40 Steel Frame 50 Ceiling material 60 Floating Floor 80 Anti-vibration rubber 82 Anti-vibration rubber 84 Vibration isolation material

Claims

1. A wall body divided into an upper wall portion fixed to an upper slab and a lower wall portion fixed to a lower slab; a steel frame that is fixed to a building frame and is pin-joined to the upper wall portion to form a truss together with the upper wall portion; A ceiling material suspended from the upper slab and arranged opposite the steel frame; A vibration prevention structure equipped with

2. The ceiling material is It is suspended from the upper slab via vibration-isolating materials, A vibration-proof material is disposed between the steel frame and the The anti-vibration structure according to claim 1.

3. A floating floor is arranged on the lower slab via a vibration isolating material. The anti-vibration structure according to claim 1 or 2.

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