JP2009197555A - Vibrationproof and soundproof building structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibrationproof and soundproof building structure capable of preventing vibration and impact from being propagated to lower and upper stories and of reducing a load on a flooring substrate. <P>SOLUTION: A building structure 10 having a peripheral wall 11, the flooring substrate 12 secured to the lower section of the peripheral wall 11, and a ceiling 13 is suspended and supported by a structural skeleton 1 above with a cushion 14 secured to the upper end of the peripheral wall 11 interposed therebetween. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibration-proof / sound-proof building structure used for a building structure such as a detached house, an apartment, a condominium such as an apartment.

  In a multi-storey building such as a detached house or a condominium, when an impact is applied to the floor due to jumping, running, walking, falling objects, etc. in a living room or hallway, the vibration and impact sound are transmitted through the structural frame of the building. Since it travels downward, residents on the lower floor may be damaged by noise.

  Conventionally, in order to suppress the propagation of the impact generated on the floor to the lower floor, the floor base material is supported by a support leg with an elastic material interposed to reduce the impact. Has been proposed. For example, Patent Document 1 discloses a building floating structure in which a viscoelastic material filler is interposed in a gap between a floor foundation and a flooring material, a wall foundation and a walling material, and a ceiling foundation and a ceiling material.

FIG. 5 is a schematic longitudinal sectional view showing a conventional support structure for this kind of floor base material. In this structure, the floor base material 103 is supported by a plurality of support legs 106 made of an elastic material such as rubber, and the elastic material absorbs vibrations and sounds to the lower floor and generates vibrations and impact sounds to the lower floor. Propagation is prevented. In FIG. 5, the support legs 106 support the joists 103 b attached to the back surface of the floor base plate 103 a constituting the floor base material 103. In FIG. 5, 101 is an upper structural housing, 102 is a lower structural housing, 104 is a peripheral wall, 105a is a ceiling board, 105b is a field edge attached and fixed to the ceiling board, and 107 is an upper structure with a field edge 105b. An anchor bolt for connecting the casing 101.
Japanese Patent No. 3981552

  However, in this type of soundproof floor foundation structure, in order to ensure the rigidity of the floor foundation plate 103a, the floor foundation plate 103a is supported by a large number of support legs 106, and further the floor wall is supported at a place where the floor foundation plate 103a is supported. If hard rubber is used as a support leg provided below to suppress sinking, the floor base material 103a is stable in shape without being bent, but there is a risk that the vibration and sound insulation performance will be significantly deteriorated.

  The present invention has been proposed in consideration of such circumstances, and its purpose is to prevent vibration and impact from propagating to the lower floor and upper floor, and to reduce the load on the floor base material. It is to provide a simple anti-vibration / soundproof box type building structure.

  In order to achieve the above object, the vibration-proof and sound-proof building structure according to claim 1 includes a building structure including a peripheral wall, a floor base material fixed to a lower portion of the peripheral wall, and a ceiling, It is characterized by being suspended and supported by an upper structural frame with a buffer body fixed to the structure interposed therebetween.

  In the vibration-proof / sound-proof building structure according to claim 2, the floor base material is disposed so as to be surrounded by a peripheral wall, and the peripheral wall is formed with a concave groove at a lower end portion, and the concave groove is on a lower structural frame. Are vertically held by being fitted to the ridges provided on the surface.

  In the vibration-proof / sound-proof building structure according to claim 3, the peripheral wall is vertically held on the lower structural frame via the buffer means.

  In the vibration-proof / sound-proof building structure according to claim 1, the entire building structure including the peripheral wall, the floor base material fixed to the peripheral wall, and the ceiling is arranged on the upper structure via a buffer fixed to the upper end of the peripheral wall. Since the structure is suspended and supported by the frame, it is possible to construct the building with almost no contact between the floor base material and the lower structural frame. The vibration generated on the floor propagates through the solid below the floor. There is almost no risk of noise on the lower floor. Moreover, since it is a structure suspended through a buffer, the vibration transmitted to a surrounding wall is absorbed by the buffer, and the propagation of the vibration to an upper floor can also be reduced. Furthermore, since the floor base material is suspended, the load on the peripheral wall is not applied to the floor base material.

  In the vibration-proof / sound-proof building structure according to claim 2, a structure in which the groove provided in the lower end portion of the peripheral wall is fitted to the protruding portion formed on the lower structural frame, and the peripheral wall is vertically held; Therefore, even if it receives a large shake due to a large vibration or an earthquake, it is stably held without shaking.

  In the vibration proof / sound proof building structure according to claim 3, since the peripheral wall is vertically held on the lower structural frame via the buffering means, the vibration transmitted from the peripheral wall to the lower structural frame is absorbed by the buffer means. It can be suppressed and can absorb large vibrations and large shaking caused by earthquakes.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a schematic longitudinal sectional view of a building structure showing a vibration-proof / sound-proof building structure according to an embodiment of the present invention. In the example of the figure, a room on a multi-story upper floor (second floor or higher floor) such as an apartment is shown. FIG. 2A is a schematic plan view of the building structure, and FIG. 2B is a schematic cross-sectional view.

  The building structure 10 includes a peripheral wall 11 that partitions a living room space, a floor base material 12, and a ceiling 13.

  The peripheral wall 11 is made of reinforced concrete or the like, and a spring 14 is provided around the upper end as a buffer body 14, and the upper end of the spring 14 is fixed to the upper structural housing 1 made of reinforced concrete or the like. The upper part of the peripheral wall 11 is fixed and held so as to surround the ceiling 13, while the lower part is fixed and held so as to surround the floor base material 12. Thus, the building structure 10 is suspended and supported by the upper structural frame 1 with the spring 14 fixed to the upper end of the peripheral wall 11 interposed therebetween. Further, the peripheral wall 11 is vertically held with a lower end portion 11a connected to a lower structural housing 2 made of reinforced concrete or the like via a holding body (protruding strip portion) 15 (see FIG. 3). The installation structure of the lower end portion X of the peripheral wall 11 on the lower structural housing 2 will be described later with reference to FIG.

  The spring 14 is firmly fixed to the upper structural housing 1 and the peripheral wall 11 with an anchor bolt or the like. In the illustrated example, springs 14 are arranged at a pitch of 500 mm on the upper end of the peripheral wall 11 (see FIG. 2A). In place of the spring 14, a shock absorber such as a shock absorber may be used.

  The ceiling 13 maintains the strength (rigidity) of the ceiling board 13a and a ceiling board 13a formed by bonding a wooden board, a gypsum board, a sound insulation sheet, etc., and the ceiling board 13a It consists of a plurality of field edges 13b attached and fixed to the upper surface.

  The floor base material 12 is a floor base plate 12a in which a wooden base plate, a gypsum board, a sound insulation sheet and the like are bonded together and the strength (rigidity) of the floor base plate 12a is maintained to facilitate the construction of the floor base plate 12a. It consists of a plurality of joists 12b that are fixedly attached to the lower surface of 12a in a grid pattern.

  Since the building structure 10 composed of the peripheral wall 11, the floor base material 12, the ceiling 13, and the like is a structure that is suspended from the upper structural housing 1 by a plurality of springs 14 attached to the upper end of the peripheral wall 11. As shown in FIG. 1, the floor base material 12 does not come into contact with the lower structural housing 2, and vibration generated in the floor is hardly transmitted through the solid below the floor, and noise is generated in the lower floor. There is little risk of it occurring. Moreover, since it is a structure suspended through the spring 14, the vibration transmitted from the living room to the peripheral wall 11 and propagated upward is absorbed by the spring 14, and the propagation of the vibration to the upper floor can be reduced. Furthermore, since the floor base material 12 is in a suspended state and the periphery is fixed by the peripheral wall 11, there is no possibility that the load of the peripheral wall 11 is applied to the floor base material 12.

  In addition, since it is a structure that supports the vertical load by suspending and supporting the peripheral wall 11, it can realize a stable support with less shaking, and thus the entire building structure 10 is maintained with a stable suspension support. Further, in order to reduce the shaking of the building structure 10 and improve the stability, the installation structure is also connected and held to the lower structural frame 2.

  FIG. 3 is a schematic enlarged longitudinal sectional view of a portion X in FIG. 1, showing the installation structure on the structural housing 2 below the peripheral wall 11.

  The peripheral wall 11 is formed by forming a groove 11b on the lower surface of the lower end portion 11a, and the groove 11b is fitted to a protruding portion (holding body) 15 provided on the lower structural housing 2 so as to be vertical. Thus, the peripheral wall 11 can be stably held vertically even when subjected to shaking due to large vibrations or earthquakes, and the building structure 10 can be prevented from shaking.

  Further, the holding body 15 is firmly fixed to the lower structural housing 2 and is constituted by a buffer means 17A made of a viscoelastic body such as rubber, so that vibrations and sounds from the peripheral wall 11 are not easily propagated downward. Is desirable.

  FIG. 4 is a partial longitudinal sectional view showing another example of the buffer means for holding the lower end portion 11 a of the peripheral wall 11.

  The buffer means 17B includes a hemisphere 18 fixed to the lower end portion 11a of the peripheral wall 11, and a holding body 19 having a curved concave portion 19a that contacts the hemisphere 18 and fixed to the lower structural housing 2. As a result, the peripheral wall 11 is held vertically, and a vibration control and seismic isolation building structure installation structure is formed. In addition, it is desirable that the holding body 19 is also composed of a viscoelastic body.

  Since the peripheral wall 11 is vertically held through the buffering means 17A and 17B as described above, vibration and sound transmitted from the peripheral wall 11 to the lower structural housing 2 can be suppressed. In addition to the above, various springs, vibration control tapes, laminated rubber, etc. can be used as the buffer means.

  As described above, the building structure 10 is suspended and supported from the upper structural frame 1 and is vertically held by the lower end portion 11a of the peripheral wall 11. However, in order to maintain the strength of the floor base material 12. In addition, a support leg (not shown) may be interposed between the joist 12b and the lower structural housing 2 to support the floor base material 12 from below. It is desirable to use an elastic material for the support legs.

  Since the building structure 10 is suspended and supported, it is not necessary to install a large number of such support legs as in the conventional soundproof structure building structure. Accordingly, an appropriate number of support legs may be provided.

It is a schematic longitudinal cross-sectional view of the building structure which showed the vibration proof and soundproof building structure which concerns on embodiment of this invention. (A) is a schematic plan view of the building structure, and (b) is a schematic cross-sectional view. It is a general | schematic expanded longitudinal cross-sectional view of the X section of FIG. It is a longitudinal cross-sectional view which shows the other example of the buffer means holding the lower end part of a surrounding wall. It is the schematic longitudinal cross-sectional view which showed the support structure of the conventional floor base material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Building structure 11 Peripheral wall 11a Lower end part 11b Concave groove 12 Floor base material 12a Floor base plate 12b joist 13 Ceiling 13a Ceiling board 13b Field edge 14 Buffer body 15 Convex part 16 Anchor bolt 17A, 17B Buffer body 1 Upper structure 2 Lower structure

Claims (3)

  A building structure having a peripheral wall, a floor base material fixed to the lower part of the peripheral wall, and a ceiling is suspended and supported by an upper structural frame with a buffer fixed to the upper end of the peripheral wall interposed therebetween. Anti-vibration / soundproof building structure. In claim 1,
The floor base material is disposed so as to be surrounded by the peripheral wall,
The above-mentioned peripheral wall is a vibration-proof / sound-proof building structure in which a concave groove is formed at a lower end portion, and the concave groove is fitted and held vertically by a convex portion provided on a lower structural frame. In claim 1 or 2,
The peripheral wall is an anti-vibration / soundproof building structure that is vertically held on a lower structural frame via a buffer means.

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