JP2007132081A - Floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor structure improving construction efficiency with excellent floor impact sound shut-off performance. <P>SOLUTION: A plurality of standard floor supports 15A and high vibration absorbing floor supports 15B are interposed between a floor slab 12 and an upper floor material 14. Since the high vibration absorbing floor supports 15B equipped with dynamic vibration absorbers 25 are arranged above a slab specific area where vibration tends to occur in the floor slab 12, or below a floor specific area where vibration tends to occur in flooring 14C of the upper floor material 14, vibration is effectively damped to improve floor impact sound shut-off performance. In construction, since there is no need to arrange a vibration damping material or a sound insulating material over the whole floor surface, construction efficiency is excellent. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a floor structure for damping vibration.

  There is a floor structure for improving the performance of blocking floor impact sound. In such a floor structure, for example, a double floor structure is applied, the support member supports the floor base panel, the surfacing material, and the finishing material, and the damping material or the sound insulating material is arranged on both sides of the surfacing material (For example, refer to Patent Document 1).

In addition to the heavy material used for the conventional vibration damping material, the conventional floor structure is arranged with the vibration damping material or the sound insulation material on the entire floor surface, and the workability is poor.
Japanese Patent No. 2918907

  In view of the above facts, an object of the present invention is to provide a floor structure that has a good floor impact sound blocking performance and improves workability.

  The floor structure of the present invention according to claim 1 is a floor finishing material provided above a floor slab, and a slab which is provided between the floor slab and the floor finishing material and is likely to generate vibration in the floor slab. Vibration attenuating means that is provided only within a range above the specific region or below the floor specific region where vibration is likely to occur in the floor finish, and attenuates the vibration to reduce the impact sound. Features.

  Here, the “slab specific region” refers to a portion where the impedance of the floor slab is low or the antinode of the vibration of the floor slab (same in the following description (including the description of other claims such as claim 2)), Further, the “floor specific region” refers to a portion of the floor finish material that is likely to generate vibrations (the same applies in the following description (including descriptions in other claims such as claim 2)).

  According to the floor structure of the present invention described in claim 1, the vibration from the floor finish is attenuated by the vibration damping means and transmitted to the floor slab. Here, the vibration damping means is provided only within the range above the slab specific area where the vibration is likely to occur in the floor slab or below the floor specific area where the vibration is likely to occur in the floor finishing material. Is effectively attenuated to reduce the impact sound, so that it is possible to improve the floor impact sound blocking performance. Moreover, since it is not necessary to arrange | position a damping material or a sound-insulation material in the whole floor surface like the past at the time of construction, workability is good.

  A floor structure according to a second aspect of the present invention includes a support means provided on a floor slab, a floor finishing material supported by the support means and arranged with a space between the floor slab, and the support means. The floor slab is provided only in a range above the slab specific area where the vibration is likely to occur, or below the floor specific area where the vibration is likely to occur in the floor finishing material. Vibration damping means for reducing impact sound.

  According to the floor structure of the present invention described in claim 2, the vibration from the floor finishing material is damped by the vibration damping means and transmitted to the floor slab through the support means. Here, the vibration damping means is provided only within the range above the slab specific region where vibration is likely to occur in the floor slab, or below the floor specific region where vibration is likely to occur in the floor finish, Since the vibration is effectively attenuated to reduce the impact sound, it is possible to improve the floor impact sound blocking performance. Moreover, since it is not necessary to arrange | position a damping material or a sound-insulation material in the whole floor surface like the past at the time of construction, workability is good.

  The floor structure according to a third aspect of the present invention is the floor structure according to the second aspect, wherein the vibration damping means is elastically deformable by being supported by the supporting means or the floor finishing material and damps vibrations. A dynamic vibration absorber comprising: a member; and a mass body that is supported by the elastic member and is displaced by elastic deformation of the elastic member to attenuate vibration.

  According to the floor structure of the present invention described in claim 3, when vibration is applied to the floor finishing material, this vibration is transmitted to the elastic member. As a result, the elastic member is elastically deformed and the mass body moves up and down so as to absorb the vibration, thereby attenuating the vibration from the floor finish to the floor slab. Thereby, the heavy floor impact sound can be effectively blocked.

  A floor structure according to a fourth aspect of the present invention is characterized in that, in the configuration according to any one of the first to third aspects, a center region of the floor slab is the slab specific region.

  According to the floor structure of the present invention as set forth in claim 4, since the vibration damping means attenuates the vibration in the center region of the floor slab, the heavy floor impact sound is effectively cut off.

  A floor structure according to a fifth aspect of the present invention is the structure according to any one of the first to fourth aspects, wherein the floor finishing material is within the range of the partitioned section when the upper portion of the floor finish is partitioned. The center area | region of the said floor finishing material in the downward direction is made into the said floor specific area | region.

  According to the floor structure of the present invention described in claim 5, the vibration generated in the center region of the floor finishing material in the lower part of the range of the partition part is attenuated by the vibration damping means and transmitted to the floor slab.

  A floor structure according to a sixth aspect of the present invention is the structure according to any one of the first to fifth aspects, wherein, in a state where the storage portion is provided above the floor finish, The floor finishing material mounting area is the floor specific area.

  According to the floor structure of the present invention as set forth in claim 6, the vibration generated in the placement area of the floor finishing material below the accommodating portion is attenuated by the vibration damping means and transmitted to the floor slab.

  A floor structure according to a seventh aspect of the present invention is the structure according to any one of the first to sixth aspects, wherein in the state where the walking path is provided above the floor finish, the walking path is The floor area of the floor finishing material that is located below is the floor specific area.

  According to the floor structure of the present invention described in claim 7, the vibration generated in the passage area of the floor finishing material below the walking passage is attenuated by the vibration damping means and transmitted to the floor slab.

  In the configuration according to any one of claims 1 to 3, the floor structure of the present invention described in claim 8 is in a state where a plurality of partition portions are formed by partitioning an upper portion of the floor finish material. The floor specific region is the entire region of the floor finish material in the lower part of the first partition portion, which is a specific partition portion of the plurality of partition portions, and the first of the plurality of partition portions. It includes both of the partial region of the floor finish material in the lower part of the range of the second partition part other than the partition part.

  According to the floor structure of the present invention described in claim 8, the vibration generated in the entire area of the floor finishing material in the lower area of the first partition portion and the floor finishing material in the lower area of the second partition portion. Any vibration generated in the partial area is attenuated by the vibration damping means and transmitted to the floor slab.

  A floor structure according to a ninth aspect of the present invention is the configuration according to any one of the first to eighth aspects, wherein an area including a position of an antinode of vibration in the floor slab is defined as the slab specific area. It is characterized by.

  According to the floor structure of the present invention as set forth in claim 9, since the vibration damping means attenuates the vibration at the position of the vibration antinode in the floor slab, the heavy floor impact sound is effectively cut off.

  A floor structure according to a tenth aspect of the present invention is the structure according to any one of the first to ninth aspects, wherein the vibration equipment is installed in a state in which a vibration equipment installation portion is provided above the floor finishing material. The equipment installation area below the section is the floor specific area.

  According to the floor structure of the present invention as set forth in claim 10, the vibration generated in the floor finishing material below the vibration device installation portion is attenuated by the vibration damping means and transmitted to the floor slab.

  As described above, according to the floor structure of the present invention, there is an excellent effect that the floor impact sound blocking performance is good and the workability can be improved.

1st Embodiment of the floor structure in this invention is described based on drawing. In addition, arrow UP in a figure shows the upward direction in a floor structure.
(Configuration of the first embodiment)
A floor structure 10 shown in FIG. 1 is a double floor (dry sound insulation double floor) structure mainly used in an apartment house, and a floor impact sound (walking sound, object) that is emitted from the upper floor and propagates downward. This is a structure for reducing falling sounds of children, jumping of children, and the like.

  In the floor structure 10, a plurality of standard floor supports 15A and high vibration absorption floor supports 15B arranged at a predetermined interval are interposed between a concrete floor slab 12 and an upper floor material 14 as a frame floor. In addition, a space is formed between the floor slab 12 and the upper floor material 14 by the intervention of the standard floor support 15A and the highly vibration-absorbing floor support 15B to obtain a sound insulation effect.

  The upper floor material 14 of the present embodiment is provided above the floor slab 12 and includes a floor ground panel 14A, a flooring panel 14B on the floor ground panel 14A, and a floor finishing material on the flooring board 14B. The flooring 14C is provided in a laminated structure. Here, the upper flooring 14 (floor foundation panel 14A and the striped plywood 14B) excluding the flooring 14C, the standard floor support 15A, and the high vibration absorption floor support 15B are floor foundations.

  A standard floor support 15A shown on the left side of FIG. 1 is disposed within a range where the generation of vibration is relatively small, and is a high vibration absorption floor support provided with a dynamic vibration absorber 25 as vibration damping means shown on the right side of FIG. The tool 15B is disposed only within a range where vibration is likely to occur (details will be described later). The standard floor support 15A has a configuration in which the dynamic vibration absorber 25 is removed from the high vibration absorption floor support 15B, that is, a configuration similar to the support portion 16 as a support means in the high vibration absorption floor support 15B. Hereinafter, the highly vibration-absorbing floor support 15B will be described, and the same components in the standard floor support 15A will be denoted by the same reference numerals and description thereof will be omitted.

  As shown in FIG. 2, each high vibration absorption floor support 15 </ b> B includes a support portion 16. The support portion 16 includes an anti-vibration rubber 18 as an elastic base member, an intermediate receiving member 20 as an intermediate receiving portion, and a support bolt 22 as a supporting member, and is provided on the floor slab 12 to provide flooring. The upper flooring 14 provided with 14C is supported.

  The anti-vibration rubber 18 disposed on the floor slab 12 is a cushion rubber and is formed into a cylindrical shape that can be elastically deformed, and is supported on the floor slab 12 for damping vibrations from the upper floor material 14 and the like. A support bolt 22 is supported in an upright state on the anti-vibration rubber 18 via an intermediate receiving member 20.

  The intermediate receiving member 20 has a cylindrical shape and is provided with a flange portion 20A in the intermediate portion. One side of the cylindrical portion is inserted into the cylinder inside of the vibration isolating rubber 18 and the lower surface of the flange portion 20A (toward the vibration isolating rubber 18 side). Is attached to the upper surface of the anti-vibration rubber 18 (the surface opposite to the surface on the floor slab 12 side). A female screw portion 20B is formed on the inner peripheral surface of the cylindrical portion of the intermediate receiving member 20, and a male screw portion 22A formed on the shaft portion of the support bolt 22 is screwed into the female screw portion 20B. Thereby, the intermediate receiving member 20 is integrated with the support bolt 22.

  The support bolt 22 extends in a direction opposite to the anti-vibration rubber 18, that is, in a direction opposite to the floor slab 12, and supports the upper floor material 14 via the panel receiving member 24. The panel receiving member 24 includes a flange portion 24A that is cylindrical and protrudes outward from one opening portion. The cylindrical portion 24B of the panel receiving member 24 is inserted into and fixed to the through hole 114A of the floor foundation panel 14A, and the upper surface (surface directed toward the upper floor material 14) of the flange portion 24A is the lower surface ( It is fixed to the surface facing the floor slab 12. A female screw portion 24C is formed on the inner peripheral surface of the cylindrical portion of the panel receiving member 24, and a male screw portion 22B formed on the shaft portion of the support bolt 22 is screwed into the female screw portion 24C. As a result, the upper flooring 14 provided with the flooring 14C is supported on the support portion 16 and disposed with a space between the floor slab 12.

  A concave portion (not shown) for inserting a flathead screwdriver is formed at the front end portion of the support bolt 22, and in a state before the plywood 14B and the flooring 14C are placed on the floor base panel 14A of the upper floor material 14, The height of the floor foundation panel 14 </ b> A from the floor slab 12 can be adjusted by inserting a flathead screwdriver into a recess (not shown) of the support bolt 22 and rotating the support bolt 22.

  A dynamic vibration absorber 25 as vibration damping means supported by the support portion 16 is provided at an intermediate portion in the height direction of each high vibration absorption floor support 15B, and the floor structure 10 as a whole is shown in FIG. A plurality of dynamic vibration absorbers 25 are arranged at a height position between the floor slab 12 and the flooring 14C. As shown in FIG. 2, the dynamic vibration absorber 25 includes a cushion pedestal 26 as an elastic member and a mass body 28, and is applied as a floor impact sound blocking member for attenuating vibration and reducing impact sound. Is done.

  The cushion pedestal 26 is disposed on a receiving surface 20C that is the upper surface of the flange portion 20A of the intermediate receiving member 20, and the lower surface of the cushion pedestal 26 is fixed to the receiving surface 20C with an adhesive or the like. The cushion pedestal 26 is cylindrical and has an insertion hole 26A formed in the center, and the support bolt 22 is inserted into the insertion hole 26A. The cushion pedestal 26 is supported by the support bolt 22 via the intermediate receiving member 20 in order to damp vibrations from the upper flooring 14 and the like, and is a spring body made of soft rubber and elastically deformable. It is said.

  The mass body 28 is fixed to the upper surface of the cushion pedestal 26 with an adhesive or the like, and the intermediate receiving member 20, the cushion pedestal 26, and the mass body 28 are integrated. Further, the mass body 28 applies a load in the compression direction to the cushion base 26. The mass body 28 has a substantially cylindrical shape, and an insertion hole 28A is formed through the center. The support bolt 22 is inserted into the insertion hole 28A. The mass body 28 is supported by the cushion pedestal 26 so as to be displaced by elastic deformation of the cushion pedestal 26 so as to attenuate the vibration from the upper flooring 14 and the like.

  Here, the arrangement position of the dynamic vibration absorber 25 in the present embodiment will be described with reference to FIG. In FIG. 3, the front side of the paper surface is the upper side in the floor structure 10 (see FIG. 1), and the back side of the paper surface is the lower side in the floor structure 10 (see FIG. 1).

  In the horizontal sectional view of FIG. 3, pillars 30 are shown at the four corners, and the state where the floor slab 12 is surrounded by the beams 32 is shown between the pillars 30 and 30 by the beams 32. Yes. An arrangement range 41 surrounded by an alternate long and two short dashes line in the figure is a range in which the high vibration absorption floor support 15B including the dynamic vibration absorber 25 is arranged, and the dynamic vibration absorber 25 is arranged in the arrangement range 41. Further, the standard floor support 15 </ b> A is arranged outside the arrangement range 41.

  The arrangement range 41 is located above the central region 12C as a slab specific region in the floor slab 12, and the central region 12C is a region where vibration is likely to occur in the floor slab 12 (in FIG. 12 central regions 12C are shown in the same range as the arrangement range 41 surrounded by a two-dot chain line). The “slab specific area” refers to a portion where the impedance of the floor slab 12 is low or a vibration antinode of the floor slab 12.

Here, the floor slab 12 in a vibration state has a different amplitude (half the width of vibration) depending on the part (see the schematic diagram of FIG. 6A). Since the amplitude of the enclosed central point 12M is the largest (the amount of bending is the largest) and becomes smaller as the beam 32 is approached (the amount of bending is small), in this embodiment, the floor slab 12 is The high vibration-absorbing floor support 15B including the dynamic vibration absorber 25 is arranged on the central portion (including the central point 12M) surrounded by the beams 32 (including the central region 12C).
(Construction procedure of the first embodiment)
Next, the construction procedure when the double floor structure 10 is configured using the standard floor support 15A and the high vibration absorption floor support 15B shown in FIG. 1 will be described. The standard floor support 15A has a configuration in which the dynamic vibration absorber 25 is removed from the high vibration absorption floor support 15B, and the basic construction procedure is the same, so here, the construction procedure of the high vibration absorption floor support 15B. The explanation of the construction procedure of the standard floor support 15A is partially omitted.

  First, for the highly vibration-absorbing floor support 15B, the integrated anti-vibration rubber 18, intermediate receiving member 20, cushion pedestal 26 and mass body 28 are placed in the central region 12C ( (See Fig. 3) On the other hand, for the standard floor support 15 </ b> A, the integrated anti-vibration rubber 18 and intermediate receiving member 20 are installed above the anti-vibration rubber 18 and outside the center region 12 </ b> C in the floor slab 12.

  Next, for the highly vibration-absorbing floor support 15B, the support bolt 22 is inserted into the insertion hole 28A of the mass body 28 and the insertion hole 26A of the cushion base 26 shown in FIG. Are screwed and attached to the female threaded portion 20B of the intermediate receiving member 20 and are erected (the support bolt 22 is also erected in the same manner for the standard floor support 15A). Next, the male screw portion 22B of the support bolt 22 is screwed into the female screw portion 24C of the panel receiving member 24 fixed to the floor base panel 14A. Here, the height of the floor foundation panel 14 </ b> A from the floor slab 12 is adjusted by inserting a flathead screwdriver into a recess (not shown) of the support bolt 22 and rotating the support bolt 22.

  Next, the plywood 14B is laid on the floor foundation panel 14A, and the flooring 14C is laid on the plywood 14B. The double floor structure 10 is configured as described above.

  Thus, since it is not necessary to arrange a vibration damping material or a sound insulating material on the entire floor surface during construction, it is possible to obtain a floor structure 10 that is easy to construct and is lightweight and inexpensive.

In addition, as shown in FIG. 1, the standard floor support 15 </ b> A is arranged in a portion where the occurrence of vibration is relatively small, so that the total mass of the mass bodies 28 in the entire floor structure can be suppressed. Good sex. That is, by disposing the dynamic vibration absorber 25 in a portion that is less effective in reducing floor impact noise, the amount of the dynamic vibration absorber 25 (high vibration absorption floor support 15B) having a large mass can be reduced as the floor structure 10 as a whole. Therefore, the workability can be improved and the cost can be reduced. In addition, the collection work of the highly vibration-absorbing floor support 15B at the time of repair or the like is facilitated.
(Operation of the first embodiment)
Next, the operation of the above embodiment will be described.

  On the upper floor, the vibration of floor impact sound (for example, walking sound, etc.) emitted in the central region of the area where the flooring 14C (see FIG. 1) is laid is transmitted from the upper floor material 14 shown in FIG. Then, it is transmitted to the cushion base 26 via the support bolt 22 and the intermediate receiving member 20. As a result, the cushion base 26 is elastically deformed, and the mass body 28 moves up and down so as to absorb the vibration, thereby attenuating the vibration.

  Since the cushion base 26 is disposed around the support bolt 22, the cushion base 26 is elastically deformed along the support bolt 22, and the mass body 28 is also disposed around the support bolt 22. Therefore, the action of dynamic vibration absorption is stabilized.

  Further, since the cushion base 26 is fixed to the intermediate receiving member 20, and the mass body 28 is fixed to the cushion base 26, for example, unnecessary movement such as the mass body 28 floating from the cushion base 26 due to vibration is suppressed. In addition, since the movement of the mass body 28 can easily follow the vibration cycle, the dynamic vibration absorption effect can be enhanced.

  The vibration damped by the dynamic vibration absorber 25 is further damped by the vibration isolating rubber 18 and transmitted to the floor slab 12. For this reason, a floor impact sound is interrupted | blocked favorably.

Here, in the case of a heavy impact, a floor impact sound to the lower chamber is likely to be generated due to bending vibration of the floor slab 12, but the dynamic vibration absorber 25 is disposed at an appropriate location, so that the heavy floor impact sound is particularly effective. Can be blocked (reduced). When the dynamic vibration absorber 25 is used, a substantially equivalent weight floor impact sound blocking effect can be obtained with about half the mass of a conventional damping material.
(Second Embodiment)
Next, the floor structure in the second embodiment will be described with reference to FIG. 4 (in FIG. 4, the front side of the page is the upper side of the floor structure 10 (see FIG. 1), and the back side of the page is the floor structure 10 ( (See FIG. 1)). The second embodiment is a case where the upper side of the flooring 14C is partitioned into a plurality of partition sections (such as the room 36), and the vibration of the flooring 14C below the section of the partitioned section (room 36). A feature is that a high vibration-absorbing floor support 15B provided with the dynamic vibration absorber 25 shown in FIG. . Since other configurations are substantially the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  The plan view of FIG. 4 shows a state in which the upper side of the flooring 14C is partitioned into a plurality of partition portions (such as the room 36) by the wall 34 (in the dwelling unit). An arrangement range 42 surrounded by a two-dot chain line in the figure is a range in which the high vibration absorption floor support 15B (see FIG. 2) including the dynamic vibration absorber 25 is arranged, and the dynamic vibration absorber is included in the arrangement range 42. 25 is arranged. Further, the standard floor support 15A (see FIG. 1) is arranged outside the arrangement range 42.

  A center area 36C of the flooring 14C below the partitioned room 36 is a floor specific area where vibration is likely to occur in the flooring 14C, and an arrangement range 42 is below the center area 36C as the floor specific area. (In FIG. 4, the central region 36 </ b> C of the flooring 14 </ b> C is shown in the same range as the arrangement range 42 surrounded by a two-dot chain line). Note that the “floor specific region” refers to a portion of the flooring 14C (floor finishing material) that is assumed to be susceptible to vibration.

  Thereby, the vibration generated in the central region 36C of the flooring 14C is effectively attenuated by the high vibration absorbing floor support 15B including the dynamic vibration absorber 25 shown in FIG.

  As described above, by arranging the high vibration absorbing floor support 15B including the dynamic vibration absorber 25 corresponding to the center region 36C (see FIG. 4) of the flooring 14C having a high impact frequency, the floor impact sound is effectively cut off. (Reducing).

  In addition, by arranging the standard floor support 15A below the peripheral area of the central area 36C, the upper floor material 14 including the flooring 14C is less likely to sink even if furniture or the like is placed on the peripheral area of the central area 36C. There are advantages.

In the above embodiment, the configuration in the case where the partition portion is the room 36 has been described. However, the same configuration can be applied even if the partition portion is another partition portion such as a free space. it can.
(Third embodiment)
Next, the floor structure in the third embodiment will be described with reference to FIG. 5 (in FIG. 5, the front side of the paper is the upper side of the floor structure 10 (see FIG. 1), and the back side of the paper is the floor structure 10 ( (See FIG. 1)). The third embodiment is characterized in that a high vibration-absorbing floor support 15B (see FIG. 2) including a dynamic vibration absorber 25 is disposed above a region including a position that becomes an antinode of vibration in the floor slab 12. . Since other configurations are substantially the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  The arrangement ranges 43A and 43B surrounded by the two-dot chain line shown in FIG. 5 are areas in which the high vibration absorption floor support 15B (see FIG. 2) including the dynamic vibration absorber 25 is arranged, and these arrangement ranges 43A. , 43B, the dynamic vibration absorber 25 is disposed.

  The arrangement range 43A shown in the center is located above the central region 12B as the slab specific region of the floor slab 12 (in FIG. 5, the central region 12B of the floor slab 12 is surrounded by a two-dot chain line. It is shown in the same range as the arrangement range 43A). The four arrangement ranges 43 </ b> B are portions surrounding the arrangement range 43 </ b> A, and are intermediate portions between the arrangement range 43 </ b> A and the pillars 30 at the four corners.

  Here, the floor slab 12 in a vibrating state has a different amplitude (half the width of vibration) depending on the portion. In general, as shown in the schematic diagram of FIG. 6A, in the primary bending vibration of the primary natural frequency, the floor slab 12 has the largest amplitude at the center point 12M surrounded by the beam 32 (the amount of deflection). Is the largest), and the closer to the beam 32, the smaller (the amount of deflection becomes).

  However, due to the eigenvalues of the floor slab 12, portions with large vibrations are generated at a plurality of positions, and as shown in the schematic diagram of FIG. The position of approximately 1/4 between one side and the other side (that is, when one end in contact with the wall surface of the floor slab 12 is used as a reference, approximately 1 between the other end in contact with the wall surface) A secondary bending vibration having a secondary natural frequency with an antinode at a position of / 4 and a position of approximately 3/4 also occurs.

  In the present embodiment, as shown in FIG. 5, in order to correspond to these, positions 12M and 12N that are antinodes of vibration in the floor slab 12 (primary bending portions (center point 12M) in FIG. 6A), FIG. The region including 6 (B) secondary bending portion) is defined as a central region 12B and a peripheral region 12D as slab specific regions, and a dynamic vibration absorber 25 is provided above the central region 12B and the peripheral region 12D. The vibration-absorbing floor support 15B (see FIG. 2) is arranged (in FIG. 5, the peripheral region 12D of the floor slab 12 is shown in the same range as the arrangement range 43B surrounded by a two-dot chain line). Note that the standard floor support 15A (see FIG. 1) is arranged outside the arrangement range 43A and outside the arrangement range 43B.

  As described above, the vibration in the floor slab 12 that is a weak point with respect to the vibration, that is, the vibration in the position that becomes the antinode of the vibration in the floor slab 12 is high vibration absorbing floor support 15B provided with the dynamic vibration absorber 25. (See FIG. 2), the heavy floor impact sound is effectively cut off (reduced). Further, by providing the dynamic vibration absorber 25 (see FIG. 2) at a location where the vibration of the floor slab 12 is large (for example, at a pinpoint), the construction is performed in comparison with the case where the dynamic vibration absorber 25 is provided in the entire area of the floor slab 12 And the cost can be reduced.

It should be noted that the vibration damping characteristics of the dynamic vibration absorber 25 (see FIG. 2) provided in the central arrangement range 43A in which the vibration is large and low frequency, and the dynamic vibration provision in the peripheral arrangement range 43B in which the vibration is small and high frequency are provided. The vibration damping characteristics of the container 25 may be changed according to the vibration characteristics.
(Fourth embodiment)
Next, the floor structure in the fourth embodiment will be described with reference to FIG. 7 (in FIG. 7, the front side of the paper is the upper side of the floor structure 10 (see FIG. 1), and the back side of the paper is the floor structure 10 ( (See FIG. 1)). In the fourth embodiment, the upper side of the flooring 14C is partitioned into a plurality of partition portions (rooms 36, 37, and 38 (hereinafter referred to as “rooms 36 to 38”), a corridor 50, a storage portion 52, and the like). It is a case and is characterized in that a high vibration-absorbing floor support 15B (see FIG. 2) provided with a dynamic vibration absorber 25 is provided according to each partition. Since other configurations are substantially the same as those in the first to third embodiments, the same reference numerals are given and description thereof is omitted.

  The plan view of FIG. 7 shows a state in which the upper portion of the upper floor material 14 is partitioned into a plurality of partition portions (rooms 36 to 38, a corridor 50, a storage portion 52, an equipment installation chamber 60, etc.) by the wall 34. Note that reference numeral 35 denotes a space in which people and objects do not normally enter and exit (a space where the impact on the flooring 14C does not cause a problem like a toilet).

  Arrangement ranges 44A to 44H surrounded by a two-dot chain line in the figure are ranges in which the high vibration absorption floor support 15B including the dynamic vibration absorber 25 is arranged, and the dynamic vibration absorbers are included in these arrangement ranges 44A to 44H. 25 is arranged. In addition, standard floor support 15A (refer FIG. 1) is arrange | positioned in ranges other than these arrangement | positioning ranges 44A-44H.

  The center areas 36B, 37B, and 38B (hereinafter referred to as “center areas 36B to 38B”) of the flooring 14C below the partitioned rooms 36 to 38 are floor specific areas where vibration is likely to occur in the flooring 14C. That is, it is assumed that vibration is likely to occur, and the arrangement ranges 44A, 44B, and 44C of the highly vibration-absorbing floor support 15B (hereinafter referred to as “arrangement ranges 44A to 44C”) are central regions of the flooring 14C. 36B to 38B (in FIG. 7, the central region 36B is shown as an arrangement range 44A, the central region 37B is shown as an arrangement range 44B, and the central region 38B is shown as an arrangement range 44C. .)

  Further, in each of the peripheries of the central regions 36B to 38B of the flooring 14C, intermediate portions between the central regions 36B to 38B and the corner portions (four corners) of the rooms 36 to 38 serve as floor specific regions (that is, The peripheral regions 36D, 37D, and 38D (hereinafter referred to as “peripheral regions 36D to 38D”). There are four surrounding areas 36D to 38D around each of the central areas 36B to 38B, and the arrangement ranges 44D, 44E, and 44F (hereinafter referred to as “arrangement ranges 44D to 44F”) of the high vibration absorption floor support 15B. ) Below the surrounding areas 36D to 38D (in FIG. 7, the surrounding area 36D is an arrangement range 44D, the surrounding area 37D is an arrangement range 44E, and the surrounding area 38D is an arrangement range 44F. Each is shown in the same range.)

  For each of the partitioned rooms 36 to 38, the dynamic vibration absorber 25 (see FIG. 2) is provided corresponding to the floor specific area (center area 36B to 38B, surrounding area 36D to 38D) where the vibration of the flooring 14C is likely to occur. It is the arranged configuration.

  A corridor 50 as a walking passage is provided above the flooring 14C, and a passage region 50C of the flooring 14C below the corridor 50 is a floor specific region where vibration is likely to occur in the flooring 14C, that is, vibration is generated. The lower part of the passage area 50C as the floor specific area is the arrangement range 44G of the high vibration absorption floor support 15B (in FIG. 7, the passage area 50C of the flooring 14C includes two points). It is shown in the same range as the arrangement range 44G surrounded by a chain line.) This is a configuration in which the dynamic vibration absorber 25 (see FIG. 2) is arranged corresponding to the passage region 50C in which a walking sound or a sound of a running foot such as a child is likely to be generated and a vibration is generated by these sounds.

  A storage portion 52 (such as a closet, a closet, etc.) is provided above the flooring 14C, and a placement area 52A of the flooring 14C below the storage portion 52 is a floor where vibration is likely to occur in the flooring 14C. A specific region, that is, a portion where vibration is likely to occur, is set below the placement region 52A as the floor specific region as an arrangement range 44H of the high vibration absorption floor support 15B (in FIG. 7, flooring 14C The mounting area 52A is shown in the same range as the arrangement range 44H surrounded by a two-dot chain line). In this configuration, the dynamic vibration absorber 25 (see FIG. 2) is disposed in correspondence with the placement region 52A where vibration is likely to occur due to loading and unloading of heavy objects.

  A device installation room 60 is provided above the flooring 14 </ b> C, and a vibration device such as a washing machine is installed in the vibration device installation unit 61 of the device installation chamber 60. In this embodiment, the vibration device is installed later on the vibration device installation unit 61, but may be a structure fixed to the flooring 14C.

  In a state in which the vibration device installation unit 61 is provided above the flooring 14C, the device installation region 61A of the flooring 14C below the vibration device installation unit 61 is a floor specific region where vibration is likely to occur in the flooring 14C, that is, vibration is generated. The lower part of the equipment installation area 61A as the floor specific area is the arrangement range 44I of the high vibration absorption floor support 15B (in FIG. 7, the equipment installation area 61A of the flooring 14C is It is shown in the same range as the arrangement range 44I surrounded by a two-dot chain line). This is a configuration in which the dynamic vibration absorber 25 (see FIG. 2) is arranged corresponding to the device installation area 61A where vibration is likely to occur due to the use of the vibration device.

  Thus, the dynamic vibration absorber 25 (see FIG. 2) corresponding to the floor specific area (center area 36B to 38B, passage area 50C, placement area 52A) where vibration is likely to occur (in consideration of the state at the time of residence). ), The floor impact sound can be cut off and the workability is improved and the cost is reduced as compared with the case where the dynamic vibration absorber 25 is provided in the entire area of the floor slab 12. can do.

  In addition to the floor specific area in the above-described embodiment, a part that is put into and out of the accommodating portion 52 is also set as the floor specific area, or the area of the flooring 14C that is below the toilet (not shown) is the floor specific area. As described above, the high vibration-absorbing floor support 15B having the dynamic vibration absorber 25 may be disposed below the high vibration-absorbing floor support 15B, or the like. .

Further, the arrangement as in the above embodiment can be applied to the case where the floor structure is re-formed at a specific place, such as at the time of repair.
(Fifth embodiment)
Next, the floor structure in the fifth embodiment will be described with reference to FIG. 8 (in FIG. 8, the front side of the paper is the upper side of the floor structure 10 (see FIG. 1), and the back side of the paper is the floor structure 10 ( (See FIG. 1)). In the fifth embodiment, the high vibration absorption floor support 15B (see FIG. 2) provided with the dynamic vibration absorber 25 corresponding to the room 36 is disposed in the entire area of the floor slab 12, and corresponds to the rooms 37 and 38. The high vibration absorbing floor support 15 </ b> B (see FIG. 2) having the dynamic vibration absorber 25 is arranged in a partial region of the floor slab 12. Since other configurations are substantially the same as those in the first to fourth embodiments, the same reference numerals are given and description thereof is omitted.

  In the fifth embodiment, as shown in FIG. 8, the upper side of the flooring 14 </ b> C is partitioned to form a plurality of partitions (rooms 36, 37, 38, corridor 50, etc.).

  In the present embodiment, among the partition sections (rooms 36, 37, 38, corridor 50, etc.), the room 36 (as the first partition section to be a specific partition section) is a recreation space or the like in the partition section. It is a space where impact sounds can be generated throughout. The entire area 36Z of the flooring 14C below the inside of the room 36 is a floor specific area where vibration is likely to occur in the flooring 14C, that is, a part where vibration is likely to occur, and the entire area 36Z as the floor specific area is assumed. A high vibration-absorbing floor support 15B (see FIG. 2) provided with a dynamic vibration absorber 25 is disposed below. An arrangement range 45 surrounded by a two-dot chain line in the figure is a range in which the high vibration absorbing floor support 15B (see FIG. 2) including the dynamic vibration absorber 25 is arranged, and the dynamic vibration absorber is included in the arrangement range 45. 25 (in FIG. 8, the entire region 36Z of the flooring 14C is shown in the same range as the arrangement range 45 surrounded by a two-dot chain line).

  In addition, among the plurality of compartments (rooms 36, 37, 38, corridor 50, etc.), there is a partial area of the flooring 14C below the interior of the rooms 37, 38, corridor 50 as the second compartment other than the room 36. The floor specific area (center area 37B, 38B, surrounding area 37D, 38D, passage area 50C) where vibration is likely to occur in the flooring 14C is provided, and the lower part thereof is a high vibration absorption floor support provided with the dynamic vibration absorber 25. The arrangement ranges 44B, 44C, 44E, 44F, and 44G of the tool 15B (see FIG. 2) are the same as in the fourth embodiment.

  The standard floor support 15A (see FIG. 1) is arranged in a range outside the arrangement ranges 45, 44B, 44C, 44E, 44F, and 44G.

In this manner, in the flooring 14C, the standard floor support 15A (see FIG. 1) is disposed below a portion that supports a heavy object (furniture, appliances, etc.) or a corner of a room that is less likely to walk. Further, a high vibration absorbing floor support 15B is arranged below the part where the occupants are likely to walk, such as the central part of the rooms 37 and 38, etc. By arranging the high vibration absorption floor support 15B below the entire area in the room 36 where the impact sound can be generated in the entire area, the impact sound blocking structure (according to the use of the indoor space, etc.) is provided. The blocking performance is improved and the workability can be improved.
(Sixth embodiment)
Next, the floor structure in the sixth embodiment will be described with reference to FIG. 9 (in FIG. 9, the front side of the paper is the upper side of the floor structure 10 (see FIG. 1), and the back side of the paper is the floor structure 10 ( (See FIG. 1)). In addition, since 6th Embodiment is the structure similar to 1st Embodiment except the arrangement position of the high vibration absorption floor support 15B provided with the dynamic vibration absorber 25, about the same component, the same code | symbol is attached | subjected. A description thereof will be omitted.

  The sixth embodiment is in a state where the upper side of the flooring 14C (see FIG. 1) is not partitioned, and is used for an application in which an impact sound can be generated in the entire area 14Z of the flooring 14C. In other words, the portion where vibration is likely to occur is the entire region 14Z of the flooring 14C.

For this reason, the floor specific area where vibration is likely to occur in the flooring 14C is the entire area 14Z. Correspondingly, the high vibration-absorbing floor support 15B (see FIG. 2) including the dynamic vibration absorber 25 is disposed in the entire area on the floor slab 12 (see FIG. 2). An arrangement range 46 surrounded by a two-dot chain line in the figure is a range in which the high vibration absorption floor support 15B (see FIG. 2) including the dynamic vibration absorber 25 is arranged, and the dynamic vibration absorber is included in the arrangement range 46. 25 (in FIG. 9, the entire area 14Z of the flooring 14C is shown in the same range as the arrangement range 46 surrounded by a two-dot chain line). Thereby, vibration suppression in the whole floor becomes possible.
(Seventh embodiment)
Next, the floor structure in 7th Embodiment is demonstrated, referring FIG. In the first to sixth embodiments, the case where the dynamic vibration absorber 25 is applied as the vibration damping means has been described. However, the seventh embodiment is characterized in that the high damping vibration-proof rubber 54 is applied as the vibration damping means. It is. Other configurations are substantially the same as those in the first to sixth embodiments, and thus the same reference numerals are given and description thereof is omitted.

  As shown in FIG. 10, the floor structure 10 in the seventh embodiment includes a high damping floor support 15 </ b> C instead of the high vibration absorption floor support 15 </ b> B (see FIG. 1) in the first embodiment. Yes. The high damping floor support 15C has a configuration in which the anti-vibration rubber 18 (see FIG. 1) in the standard floor support 15A is replaced with the high damping anti-vibration rubber 54.

  The vibration of floor impact sound (for example, walking sound, etc.) generated above the high attenuation floor support 15C is prevented from high attenuation through the panel receiving member 24, the support bolt 22, and the intermediate receiving member 20 from the upper floor material 14. It is transmitted to the vibration rubber 54. Here, the vibration is effectively attenuated by elastically deforming the high-damping vibration isolating rubber 54 so as to absorb the vibration.

As described above, the high-damping floor support device including the high-damping anti-vibration rubber 54 above the slab specific area where the vibration is likely to occur in the floor slab 12 or below the floor specific area where the vibration is likely to occur in the flooring 14C. Even if 15C is disposed, it is possible to obtain a floor structure 10 that has a good floor impact sound blocking performance and improves workability.
(Eighth embodiment)
Next, the floor structure in 8th Embodiment is demonstrated, referring FIG. In addition, about the structure part similar to 1st-7th embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 11, in the floor structure 10, a plurality of standard floor supports 15 </ b> A arranged at a predetermined interval are interposed between the floor slab 12 and the upper floor material 14.

  Here, within the range above the slab specific area where the vibration is likely to occur in the floor slab 12 or below the floor specific area where the vibration is likely to occur in the flooring 14C (for example, the floor specific area which becomes the antinode of vibration). Only, a high specific gravity sound insulating material 14D as vibration damping means is provided. The high specific gravity sound insulating material 14D is disposed between the floor foundation panel 14A and the plywood 14B, and attenuates vibration to reduce impact sound.

Note that the end of the floor foundation panel 14A is separated from the floor foundation panel 14A corresponding to the range where the high specific gravity sound insulating material 14D is disposed and the floor foundation panel 14A corresponding to the range where the high specific gravity sound insulating material 14D is not disposed. It is supposed to be in a state. Here, a cushioning material may be attached to the end portion of the floor foundation panel 14A corresponding to a range where the high specific gravity sound insulating material 14D is not disposed.
(Ninth embodiment)
Next, the floor structure in 9th Embodiment is demonstrated, referring FIG. In addition, about the structure part similar to 1st-7th embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 12, the floor structure 70 of the ninth embodiment is a directly pasted floor structure. A lower plywood 14D is disposed above the floor slab 12, and an upper plywood 14E is disposed below the flooring 14C. A crosspiece 14F is disposed between the lower plywood 14D and the upper plywood 14E with a gap.

Here, between the lower plywood 14D and the upper plywood 14E, the floor specific area above the slab specific area where the floor slab 12 is likely to generate vibration or the floor specific area where the vibration is likely to occur in the flooring 14C (for example, the antinode of vibration). The low-resilience urethane foam 14G as vibration damping means is provided only within the range below the floor specific area or the like to reduce the impact noise by attenuating the vibration.
(Test example)
In order to confirm the floor impact sound blocking performance in the floor structure of the above embodiment, floor structures according to the following three types of examples (hereinafter referred to as Example 1, Example 2, and Example 3) A comparative test was performed with a floor structure having no vibration absorber.

  Example 1 has the same configuration as that of the fifth embodiment (see FIG. 8), Example 2 has the same configuration as that of the second embodiment (see FIG. 4), and Example 3 has the same configuration as that of the fifth embodiment. 4 (see FIG. 7).

  Improvement of the weight floor impact sound level based on the weight floor impact sound level in the floor structure in which the floor impact sound is generated in the room 36 shown in FIGS. 8, 4 and 7 and no dynamic vibration absorber is attached. The amount (dB) was examined. The compared frequencies were 63 Hz, 125 Hz, 250 Hz, and 500 Hz.

  The test results are shown in Table 1.

実施例１のように、スラブ床全域に配置した場合に、重量床衝撃音レベルが最も改善されたが、実施例２、実施例３のように、振動が発生しやすい部分（影響の大きい部分）へ局所配置した場合も、重量床衝撃音レベルが十分に改善された。
（他の実施形態）
なお、上記第１〜第６の実施形態では、動吸振器２５における弾性部材としてのクッション台座２６が、支持手段としての支持部１６に支持されているが、動吸振器における弾性部材が床材の床下地材に支持される構成としてもよい。

The weight floor impact sound level is most improved when arranged over the entire slab floor as in the first embodiment, but the portion where vibration is likely to occur (the portion having a large influence) as in the second and third embodiments. ), The heavy floor impact sound level was sufficiently improved.
(Other embodiments)
In the first to sixth embodiments, the cushion pedestal 26 as the elastic member in the dynamic vibration absorber 25 is supported by the support portion 16 as the support means. However, the elastic member in the dynamic vibration absorber is a floor material. It is good also as a structure supported by the floor base material of this.

  Moreover, in the said 1st-6th embodiment, although the case where the elastic member was the cushion base 26 comprised with the soft rubber was mentioned as an example, the elastic member is elastic like a compression coil spring etc., for example. Other elastic members that can be deformed may be used.

  Furthermore, in the first to sixth embodiments, the cushion base 26 as an elastic member is fixed to the intermediate receiving member 20 with an adhesive or the like, but the elastic member is directly fixed to the support member, for example. Thus, it is good also as a structure fixed to the arranged position other than the said embodiment. Further, the elastic member may be attached to a position where the intermediate receiving portion or the like is arranged by mechanical joining.

  Furthermore, in the above embodiment, the intermediate receiving member 20 as the intermediate receiving portion is attached to and integrated with the support bolt 22 as the supporting member, but the intermediate receiving portion is formed on a part of the supporting member. Also good.

  In addition, although the said embodiment demonstrated the case where the floor slab 12 was a concrete floor made from concrete, the floor slab may be floor foundations, such as wooden.

It is sectional drawing which shows the longitudinal cross-section of the floor structure concerning the 1st Embodiment of this invention. It is the expanded sectional view which expanded the high vibration absorption floor support of FIG. It is a horizontal sectional view showing the arrangement range of the high vibration absorption floor support provided with the dynamic vibration absorber in the first embodiment of the present invention. It is a top view which shows the arrangement | positioning range of the high vibration absorption floor support provided with the dynamic vibration damper in the 2nd Embodiment of this invention. It is a horizontal sectional view which shows the arrangement range of the high vibration absorption floor support provided with the dynamic vibration absorber in the 3rd Embodiment of this invention. It is a schematic diagram which shows the vibration state of a floor slab. FIG. 6A shows the state of the primary bending vibration. FIG. 6B shows a state of secondary bending vibration. It is a top view which shows the arrangement | positioning range of the high vibration absorption floor support provided with the dynamic vibration damper in the 4th Embodiment of this invention. It is a top view which shows the arrangement | positioning range of the high vibration absorption floor support provided with the dynamic vibration damper in the 5th Embodiment of this invention. It is a top view which shows the arrangement | positioning range of the high vibration absorption floor support provided with the dynamic vibration damper in the 6th Embodiment of this invention. It is sectional drawing which shows the longitudinal cross-section of the floor structure concerning the 7th Embodiment of this invention. It is sectional drawing which shows the longitudinal cross-section of the floor structure concerning the 8th Embodiment of this invention. It is sectional drawing which shows the longitudinal cross-section of the floor structure concerning the 9th Embodiment of this invention.

Explanation of symbols

10 Floor structure 12 Floor slab 12B Central area (slab specific area)
12C Central area (slab specific area)
12D Surrounding area (slab specific area)
12M center point (position to be the antinode of vibration)
12N Position of vibration antinode 14C Flooring (flooring material)
14Z whole area (floor specific area)
16 Supporting part (supporting means)
25 Dynamic vibration absorber (vibration damping means)
26 Cushion base (elastic member)
28 mass bodies 36 rooms (compartment, first compartment)
36B center area (center area (floor specific area))
36C Central area (floor specific area)
36D Surrounding area (floor specific area)
36Z whole area (floor specific area)
37 rooms (partition section, second section)
37B Central area (central area (floor specific area), partial area)
37D Surrounding area (floor specific area, partial area)
38 rooms (partition section, second section)
38B Central area (central area (floor specific area), partial area)
38D Surrounding area (floor specific area, partial area)
50 corridor (walking walkway, section, second section)
50C passage area (floor specific area)
52 accommodating portion 52A placement area (floor specific area)
54 High damping rubber (vibration damping means)
61 Vibration equipment installation section 61A Equipment installation area (floor specific area)
70 Floor structure

Claims (10)

Floor finishing material provided above the floor slab;
Range between the floor slab and the floor finishing material, above the slab specific area where vibration is likely to occur in the floor slab, or below the floor specific area where vibration is likely to occur in the floor finishing material Vibration attenuating means that is provided only inside and attenuates vibrations to reduce impact sound;
A floor structure characterized by comprising: Support means provided on the floor slab;
Floor finishing material supported by the support means and disposed with a space between the floor slab,
It is supported by the support means, and is provided only within the range above the slab specific region where vibration is likely to occur in the floor slab, or below the floor specific region where vibration is likely to occur in the floor finishing material. Vibration damping means for reducing impact sound by damping,
A floor structure characterized by comprising:   The vibration damping means is elastically deformable by being supported by the support means or the flooring material and is capable of elastically attenuating vibration, and is supported by the elastic member and displaced by elastic deformation of the elastic member to vibrate. The floor structure according to claim 2, wherein the floor structure is a dynamic vibration absorber.   The floor structure according to any one of claims 1 to 3, wherein a center area of the floor slab is set as the slab specific area.   5. The floor specific material according to claim 1, wherein in a state where the upper portion of the floor finishing material is partitioned, a center region of the floor finishing material in the lower portion of the partitioned section is defined as the floor specific region. The floor structure according to one item.   In the state which provided the accommodating part above the said floor finishing material, the mounting area | region of the said floor finishing material used as the downward direction of the said accommodating part is made into the said floor specific area | region. The floor structure according to one item.   The state of having a walkway above the floor finishing material, the passage area of the floor finish material that is below the walkway is defined as the floor specific region. The floor structure according to any one of the above.   In a state where the upper part of the floor finish is partitioned and a plurality of partition parts are formed, the floor specific region is below the first partition part within the range of the specific partition part among the plurality of partition parts Including both the entire area of the floor finishing material in the above and a partial area of the floor finishing material in the lower part of the second partition part other than the first partition part among the plurality of partition parts. The floor structure according to any one of claims 1 to 3, wherein the floor structure is characterized.   The floor structure according to any one of claims 1 to 8, wherein a region including a position of an antinode of vibration in the floor slab is set as the slab specific region.   10. The apparatus according to claim 1, wherein in a state in which a vibration device installation unit is provided above the floor finishing material, a device installation region below the vibration device installation unit is set as the floor specific region. The floor structure according to the item.

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