JP2915809B2 - Sound insulation floor structure of the building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-insulating floor structure of a general wooden house or a prefabricated building made of lightweight steel.

[0002]

2. Description of the Related Art Conventionally, in the case of a joist floor structure in a wooden house or a prefabricated building using lightweight steel or the like, the joist is disposed on a large floor, which is a horizontal member (horizontal member) on the first floor. , The upper floor is a horizontal member (horizontal member), a joist is arranged on a floor beam, and a heat insulating material or a sound absorbing material is arranged between the joists.
It is widely known that a floor board is stretched over a joist and a finishing floor material such as tatami mats is placed on the upper layer, but vibration of the upper floor or climbing of stairs is widely known. Vibration at the time, or vibration and noise caused by roadside vehicles such as buildings, etc., were not always adequately equipped.

[0003] Therefore, (a) "A wooden sound insulation floor in which the space of a panel whose outer peripheral portion is formed of a frame material and whose front and back surfaces are formed of surface materials joined to the frame material is filled with sandy aggregate." (B) "A sound absorbing and heat insulating material having a cushioning property is disposed on the upper surface of the floor main body, and a single-sided panel is provided on the sound absorbing and heat insulating material. A floor structure of a house in which one side panel is filled with sand, and the top surface of the one side panel is covered with a surface plate. " Gazette)
And (c) "A soundproofing material obtained by filling a powder having a plurality of independent spaces and a granular material into the independent spaces of a substrate having the plurality of independent spaces" (JP-A-61-4).
No. 0941) has been proposed.

However, the sand filled in the single-sided panels according to the above proposals (a), (b), and (c) has a high specific gravity, and an unnecessary load is applied to the building frame, which is dangerous in the event of a disaster such as an earthquake. And the sand to be filled has a particle size of 0.5
２．０2.0% is densely filled in the panel space without any gap, and the sound insulation effect is not always good. In addition, since the sand filling work is fine and powdery, the sand is heavy, so that it can be used for transportation and installation. The disadvantage of poor workability is inevitable.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to
It is an object of the present invention to provide a sound insulation floor structure of a building capable of overcoming and eliminating the problems inherent in the conventional technology as described above, and in particular, to provide a sound insulation layer having excellent sound insulation properties between joists of a joist floor structure at a low cost. And easy configuration.

[0006]

According to the present invention, an ALC panel or the like is used as a sound insulating material between joists constituting a joist floor structure .
By forming the sound insulation layer by filling and arranging the crushed particles , the crushed particles of the ALC panel and the like are porous and lightweight, so that an extra load is applied to the frame structure including the floor assembly. It functions as a sound insulation layer that is excellent not only in sound insulation but also in heat insulation and fire resistance, and can effectively utilize easily available and inexpensive ALC panel waste .

Further, by disposing the crushed particles of the ALC panel or the like in a state of being packed in a bag having air permeability,
The scattering and scattering of the crushed particles of the ALC panel etc. are prevented.
You.

Further, AL filled in a bag having air permeability in a sound absorbing layer partitioned by an inorganic fiber material such as glass wool.
Place crushed particles such as C panel, or break ALC panel etc.
When a sound absorbing layer made of an inorganic fiber material such as glass wool is laminated above and below the sound insulating layer made of crushed granules , the two can work together to further improve the sound insulating effect.

Further, a sound-absorbing plywood floor is placed on the sound insulation layer formed by the crushed particles of the ALC panel or the like, and an upper-stage joist is superimposed on the floor at a corresponding position where the joist is arranged. When a space portion is formed between the upper joists and a finishing floor material or other floor material is stretched thereon, the space portion cooperates with a sound insulation layer formed by crushed particles such as ALC panels to further enhance the sound insulation effect. It can be improved, but at that time, as a floor material to be stretched over the space part, it is finished after forming a composite floor part laminated with sound absorbing plywood floor, non-combustible board and lightweight cellular concrete (ALC) panel It is more desirable to stretch flooring.

Note that hollow joists such as light-angle steel are made of I-type steel or the like.
So that it can be held through a sound insulation mat on a horizontal member
In addition, the transmitted vibration and sound waves are buffered and attenuated
be able to.

In particular, crushed particles such as ALC panels are made of lime,
Limestone, silica sand and blast furnace slag
For any siliceous raw materials, suitable foaming agents and other admixtures
Foam (ALC panel) ... (JIS-A541)
6) is obtained as crushed granules.
Placing crushed grains such as C panels between joists makes a sound insulation layer
Is what you do.

By using the crushed grains of the ALC panel or the like as a sound insulating material of a sound insulating layer formed between joists,
Different wave or the like frequencies due vibration or noise occurs during the passage of the heavy load vehicle roadside buildings, the ALC
Experiments have shown that sound waves of different frequencies are respectively absorbed and attenuated during the passage through the complicated porous pores of crushed particles such as panels and the like, and the sound insulation effect is exhibited.

Further, in the sound insulation effect of the crushed particles of the ALC panel and the like, the crushed particles of the ALC panel and the like having different particle sizes are mixed in an appropriate weight ratio and used.
It was found that the sound insulation effect was superior to that of a certain particle size. Although this has not yet been sufficiently elucidated academically, when sound waves enter the porous channels of crushed particles such as ALC panels , the porosity of crushed particles such as large- sized ALC panels becomes smaller than that of small holes. There is a difference in the wave-absorbing action between the porous pores of the crushed particles such as the ALC panel having a small particle size depending on the wavelength of the sound waves. Acoustic waves that are attenuated by the porous pores, but are difficult to cancel at small particle sizes, can break large-sized ALC panels and the like.
It is recognized that the wave is attenuated and attenuated by the porous channels of the crushed granules .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the sound insulation floor structure of a building according to the present invention will be described below with reference to FIGS.
8 will be described with reference to FIG. Sound insulation device 1 shown in FIG.
A lightweight cellular concrete panel 3 (hereinafter referred to as A) is placed on a horizontal member 2 such as wood or I-shaped steel,
It is called LC panel. ), And at predetermined intervals on the ALC panel 3 through a sound insulation mat 5 (shown in FIG. 6) made of vulcanized rubber having adhesive sheets 4 and 4 attached on both sides thereof.
Along with positioning and positioning the hollow joists 6 and 6 such as lightweight steel, an ALC panel or the like
After forming the sound insulation layer by arranging the crushed grains 7, a composite floor 10 in which the sound absorbing plywood floor 8, the non-combustible board 9 and the ALC panel 3a are laminated is formed on the hollow joists 6 and 6, A finishing floor material 11 such as a decorative floor board or a tatami mat is stretched on the floor panel.

Breakage of the ALC panel or the like forming the sound insulation layer
Since the crushed granules 7 can be used by crushing waste materials such as ALC panels used in old buildings for disposal treatment, they can be easily and inexpensively obtained, have a bubble shape, are amorphous, and have various particle sizes. since mixed to have an excellent sound insulation effect, it is less to be borne unnecessary load to building structures portion including a bed assembly for weight, it is in the expectation
Wear.

In the construction of the floor, the wall 12 of the building adjacent to the outside of the floor as shown in FIGS.
In addition to appropriate wooden pillars, pillar members 13 made of lightweight steel or the like,
A heat insulating layer 16 such as a styrofoam is arranged in a predetermined frame of a building frame 15 to which a girder member 14 made of a light-groove section steel or an H-shaped steel is connected, and an air layer 17 is provided outside the heat insulating layer 17. A structural outer wall material such as a sheathing board 18 is stretched, an air layer 17a is provided inside the heat insulating layer 16 such as the styrofoam, and a sound absorbing board such as a gypsum board 19 is stretched inside the building. It is desirable to have a configuration for controlling vibration and sound from outside.

Next, as another embodiment of the structure of the hollow joists 6 and 6, as shown in FIGS. 2 and 3, the hollow portions of the hollow joists 6 and 6 are made of an inorganic fiber material such as glass wool 20 or the like. A sound absorbing layer made of, and the vibration sound reverberating at the walls of the hollow joists 6 and 6 can be absorbed and eliminated.

As another embodiment, as shown in FIGS. 4 and 5, a large number of small joists are provided on the wall portions 21 of the joists on the appropriate surfaces of the hollow joists 6 and 6 or all the joists. Holes 22, 22
When the hollow portion is filled with a sound absorbing layer such as glass wool 20, vibrations or sound waves propagated to the wall portions 21 of the hollow joists 6 and 6 are transmitted to the small holes 22 of the wall portion 21. ,
Since it can be absorbed by the sound absorbing layer such as the glass wool 20 which is dispersed and filled in the glass 22, the vibration or the sound wave can be attenuated and eliminated to improve the sound insulation efficiency.

ALC placed between the hollow joists 6
The crushed particles 7 of a panel or the like are crushed particles of a large particle size (about 5 to 15 m / m) among the crushed particles 7 of an ALC panel or the like, and crushed particles of a small particle size (about 2 to 5 m / m). 7
Can be carried out by mixing a mixture of 10 to 30% by weight of a dispersant in the intermediate space between the joists 6 and 6. As a result, sound waves which could not be attenuated by the porous pores of the crushed particles 7 such as the large- grained ALC panel are attenuated through the porous pores of the crushed grains 7 such as the small- sized ALC panel. The reverse wave-dissipating phenomenon causes large- and small-grained AL
It is recognized that the crushed particles 7, 7 of the C panel or the like can cooperate to attenuate sound waves having different frequencies that are propagated to the floor. In addition, as another embodiment when mixing and using crushed particles having different particle sizes, a small particle size
Instead of crushed particles such as ALC panels , particle size 1.2-5m /
The crushed particles of m-class pearlite (JISA5007) can be dispersed and mixed at a weight ratio of 10 to 30% with respect to the base material of the crushed particles 7 such as the above-mentioned large-grain ALC panel .

[0020] Furthermore, between the hollow joists material 6,6, A
At the time of arranging the crushed grains 7 such as LC panels , as in the embodiment shown in FIG. The sound absorbing layer may be arranged in a strip shape, and the sound insulating layer may be formed by filling crushed particles 7 such as an ALC panel in each section of the sound absorbing layer. Thereby, the sound wave transmitted to the crushed particles 7 such as the ALC panel between the joists 6 and 6 is temporarily reduced through the sound insulation layer of the glass wool 20a for each section, and the porous holes of the crushed particles 7 such as the ALC panel are formed. It is made incident on the road and attenuated and wave-absorbed, so that a more efficient sound insulation effect can be expected than a single sound insulation layer of crushed particles 7 such as an ALC panel .

Furthermore, as in the embodiment shown in Figure 8, between the joists material 6,6 on the horizontal member 2, crushed such as ALC panels on the upper surface of arranging the sound absorbing layer of glass wool 20 or the like into a sheet
The grains 7 are arranged, a sound absorbing layer such as glass wool 20 is laminated in a sheet shape, a sound absorbing plywood floor 8 is placed on the joists 6, 6, and on the sound absorbing floor 8. The upper-stage joists 6a, 6a are laminated and arranged at positions corresponding to the above-mentioned joists 6, 6 via sound insulation mats 5a, 5a provided with double-sided adhesive sheets 4, 4, respectively. A joist air layer 25 is provided between the upper and lower joists 6a, 6a to form a composite floor portion 10 in which a sound absorbing plywood floor 8, a non-combustible board 9, and an ALC panel 3 are laminated on the upper joist members 6a, 6a. The floor 11 can be stretched to form a floor.

In FIGS. 7 and 8, the crushed particles 7 such as the ALC panel arranged between the joists 6 and 6 are placed in a paper bag having air permeability or a bag 24 made of synthetic resin material having air permeability. It is possible to reduce the labor required for arranging the work by filling it up and dispose it efficiently, and there is no danger that crushed particles 7 such as ALC panels may be scattered or dissipated and contaminate the surroundings. In addition, since the bag body 24 has air permeability, the original sound insulating effect can be exhibited without blocking the porous passage of the crushed particles 7 such as an ALC panel . The crushed particles 7 of the ALC panel or the like stored in the bag 24
It is preferable to measure and measure the capacity, shape, flexibility, and the like in advance so as to easily fit into a predetermined space between the joists, and then store and store it.

[0023]

(A) Crushing of ALC panels etc. between joists
When a sound insulation layer made of grains is used as the sound insulation material, the ALC
In addition to the inherent porosity of the ALC material , crushed particles such as flannel provide good sound insulation performance due to the irregular particle size and the mixture of particle sizes due to crushing, and good living properties due to heat insulation and fire resistance. It is also expected to ensure safety and security.
That is, by forming a sound insulation layer in which crushed particles such as ALC panels having different particle sizes are mixed, an ALC panel having a large particle size is formed.
The crushed particle in the absorbent damping hardly waves etc., small particle size ALC Pas
ALC panel of small particle size , attenuated by crushed particles such as flannel
The crushed grains in attenuation insufficient sound waves etc., large particle size of the ALC Pas
Waves are attenuated by crushed particles such as flannel, which improves the overall shielding efficiency.

(B) The crushed particles of the ALC panel and the like
Since LC materials are widely used in ALC panels and the like, they are easy to obtain. In particular, when crushed waste materials of ALC panels that are no longer needed are used, they can be implemented easily and inexpensively. It can contribute to resource saving and environmental improvement by reducing waste treatment which has been a problem in such points.

(C) ALC panels and the like arranged between joists
The crushed granules are made of a porous material that is lightweight and burdens the floor
Can be reduced.

(D) If the crushed particles of the ALC panel or the like are filled and placed in a bag having air permeability, the crushed particles of the ALC panel or the like may be broken.
Eliminate the risk of environmental pollution due to scattering of crushed fine powder, etc.
Installation work can be easily carried out simply by arranging bagged pieces of crushed granules such as ALC panels in advance in a suitable amount, and can be adapted to various joist floor structures with different shapes and sizes. And handling for transportation is easy.

(E) AL filled in a bag having air permeability
When crushed particles such as C panel are placed on a sound absorbing layer partitioned by an inorganic fiber material such as glass wool, or when crushed particles such as an ALC panel packed with a bag of the sound absorbing layer made of an inorganic fiber material are stacked on top and bottom, the two will work together. It can further improve the sound insulation effect.

(F) When an upper-stage joisting material is stacked on the sound-insulating layer made of crushed particles such as an ALC panel and an air layer is formed between the upper-stage joisting materials, the two cooperate to further enhance the sound insulating effect. The sound absorbing plywood floor, the non-combustible board and the AL
When a composite floor portion in which C panels are stacked is formed, the sound insulation effect can be further improved.

(G) The joist is placed on a horizontal member such as
It is held through the sound-absorbing mat without using the
Can be placed in the muffler,
Suppresses vibrations from the frame, such as walls, beams and girders, and dampens vibration
Demonstrate fruit.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a floor.

FIG. 2 is an enlarged vertical sectional view of a hollow joist.

FIG. 3 is an enlarged cross-sectional view of the same.

FIG. 4 is an enlarged vertical sectional view of another embodiment of the hollow joist.

FIG. 5 is an enlarged cross-sectional view of the same.

FIG. 6 is an enlarged sectional view of the sound insulating mat.

[Fig. 7] Fig. 7 shows an ALC panel or the like filled in a bag between joists.
It is an expanded sectional view of the important part of a floor part in which crushed granules are arranged.

FIG. 8 shows an ALC package filled in a bag according to another embodiment.
FIG. 3 is an enlarged cross-sectional view of a main part of a floor in which crushed particles such as flannel and sheet-like glass wool are alternately stacked, and upper-stage joists are stacked and arranged.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sound insulation device 2 Horizontal member 3 ALC panel 4 Adhesive sheet 5 Sound insulation mat 6 Hollow joist material 6a Upper stage joist material 7 Crushed particles such as ALC panels 8 Plywood floor 9 Non-combustible board 10 Composite floor part 11 Finishing floor material 12 Building wall Part 13 pillar member 14 girder member 15 skeleton 16 heat insulating layer 17 air layer 17a air layer 18 sheathing board 19 plaster board 20 glass wool 20a glass wool 21 joist wall 22 small hole 24 bag 25 joist air layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G10K 11/16 G10K 11/16 C

Claims (8)

(57) [Claims] In a joist floor structure in which a joist is erected on a horizontal member such as a pulling beam or a floor beam and a floor is assembled, and a finishing floor material and other floor materials are stretched thereon, An ALC panel is provided on the bottom side, and the
Crushing ALC panel or the like in a manner to be placed on the ALC panel
A sound-insulating floor structure of a building, characterized by a grain- filled arrangement forming a sound-insulating layer. 2. The sound insulation floor structure of a building according to claim 1, wherein the crushed particles of the ALC panel or the like are packed in a large number of bags having air permeability and filled between the joists. 3. A sound-absorbing layer made of glass wool or other inorganic fiber material, which is partitioned in a vertical or horizontal direction or in a grid at appropriate intervals, is placed between the joists, and the bag is packed between the sound-absorbing layers. 3. The sound insulation floor structure of a building according to claim 2, wherein crushed particles such as ALC panels are filled and arranged. 4. The sound insulation floor structure of a building according to claim 1, wherein a sound absorption layer made of an inorganic fiber material such as glass wool is laminated above and below the sound insulation layer formed by the crushed particles of the ALC panel or the like. 5. A sound-absorbing plywood floor is placed on the sound-insulating layer of the crushed particles of the ALC panel or the like, and an upper layer is provided on the sound-absorbing plywood floor at a position corresponding to the joist material via a buffer rubber. The floor joists are stacked and arranged, a finishing floor material or other floor material is stretched over the upper joists, and a joist air layer is formed between the upper joists. The sound insulation floor structure of the building described in. 6. A floor material stretched on the joist of the upper stage is a composite floor material in which a sound absorbing plywood floor, a nonflammable boat and an ALC panel are laminated, and a finished floor stretched on the composite floor material. The sound-insulating floor structure of a building according to claim 5, which is made of a material. 7. The horizontal member is made of I-beam or the like, and the joist is light.
The sound insulation floor structure of a building according to any one of claims 1 to 6 , comprising a hollow joist material such as a square steel, wherein the joist material is supported on a horizontal member via a sound insulating mat. 8. The crushed particles of the ALC panel or the like include AL.
8. A crushed waste C panel material is used.
The sound-insulating floor structure of a building described in any of the above.