JPS63558A - floating floor structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is directed to floor 1? which occurs when a child or the like jumps on the floor in a house, especially an apartment complex. This invention relates to a floating floor structure with poor sound insulation performance that reduces the transmission of J sound downstairs.

(Conventional technology) Floor impact noise is caused by the impact force caused by people walking, jumping, etc.
It is caused by vibrating the floor structure and emitting sound to the lower floor due to the vibration. This floor impact sound includes the floor impact sound caused by a light impact force such as when a person walks, and the Iijawi! when a child jumps. l LJ I S-
A Floor W due to impact force equivalent to effective impact force of 3875N in the impact sound generator
There is an iJ gun sound. Among the floor impact sounds mentioned above, those caused by light #fi impact force can be reduced by absorbing the impact force by using floor finishing materials such as carpets, but heavy
In the case of impact force, the vfJ91I force is easily transmitted to the subfloor and causes the subfloor itself to vibrate, making it difficult to reduce the impact.

A floating floor structure is known as a floor structure for reducing such floor impact noise. This conventional floating floor consists of a glass wool cushioning layer placed on a concrete floor slab, a floor panel material placed directly on top of it, and a floor finishing material such as carpet or wood floor placed on top of that. Alternatively, as shown in FIG. 11, a support C such as a joist is arranged on the buffer material lb on the concrete floor slab a, and a floor panel material d is placed on top of the support C, with an air gap between it and the buffer material 1b. There is one in which u is placed while holding e, and a floor finishing material f is further provided on top of it, and in both cases, the impact force of W7J is directly transmitted to the concrete floor slab a due to the II boxability of the glass wool cushioning material 1b. It is designed to prevent this.

According to the above-mentioned conventional floating floor structure, the floor panel material of Takeya, in which the floor panel material is placed directly on the cushioning material layer, bends and deforms when floor impact force is applied, and the impact force is transferred to the MWI material. The buffer acts concentratedly on the layer, and is transmitted to the floor slab without being absorbed or alleviated by the buffer layer, resulting in poor cushioning properties. On the other hand, the cushioning material W! In the latter case, in which the floor panel material d is placed on Jb via the support C, the impact force P is dispersed by the support C and transmitted to the cushioning material layer, and this dispersion force P1 is transmitted to the cushioning material layer. By being absorbed and relaxed by ab, the WJw force applied to the floor subfloor a is reduced and dispersed, and the floor impact sound emitted downstairs is reduced, and the overall floor impact sound is reduced compared to the case where no cushioning material layer is provided. As a result, the sound insulation grade according to the floor m-fire level according to the Architectural Institute of Japan standards is L-55, and when you experience it in your daily life, the sound caused by impact is a little bothersome, but if you live with care, it will not be a problem. It is possible to reduce floor impact noise to a level that does not occur.

(Problems to be Solved by the Invention) However, in recent years, as privacy has become more important and housing has become more high-rise, there has been a demand for extremely superior "a" sound performance, and the above-mentioned conventional floating floor structure has The performance limit was 55, and it was a national problem to reduce the sound insulation grade to L-50 or L-45, a range where the floor MM sound was hardly noticeable.

Considering the reason for this, when a large impact force of 3875N as specified by JIS''cpA is applied to the above-mentioned conventional floating floor structure, as shown in Fig. 11, large bending deformation occurs instantaneously, and the floor Large bending vibrations occur on the surface. In this bending motion, the vibration frequency changes depending on the size of the floor panel material d and the spacing between the supports C placed under it. As a result, the sound emitted downstairs becomes louder and the floor impact sound level no longer satisfies the standard value.
# is determined.

Furthermore, in a floating floor structure in which a support is placed on a cushioning material layer, when the floor panel material d is bent and deformed due to the floor impact force, the panel material d! ! The air in the air 111e between the box material 11b is compressed as its flow is blocked by the supports, and a part of this air pressure escapes laterally along between the supports, but the negative part is released vertically. It acts as a spring and transmits a force P' to the floor slab a through the cushioning material layer, and the reaction force from the air pressure cushioning material mb acts on the floor panel material d, causing bending vibration to the floor panel material d. make me wake up In other words, the air layer C
It is estimated that the vibrations of the floor slab a and the floor panel d are amplified due to the compression and expansion forces that move, and the floor impact sound is amplified.

Based on this idea, the present invention proposes that if the compression and expansion forces acting on the air layer between the cushioning material layer and the floor panel material are reduced when the floor impact force is applied as described above, the bending of the floor panel material can be photographed. We focused on the fact that the vibrations quickly subside, reducing the force transmitted to the flooring substrate through the cushioning material layer and the force transmitted to the floor pile material, and as a result, the vibration of the floor panel material and the flooring substrate can be significantly reduced. However, this not only reduces bending vibrations on the surface of the flooring material, but also
The imaging of the subfloor itself has also been made smaller, reducing the floor impact sound level, which was the limit of conventional floating floor structures, and achieving sound insulation performance higher than -559.
For example, the purpose is to exhibit the sound insulation performance of Shi-50 and L-45@.

(Means for Solving the Problems) For the above purpose, in the present invention, when a floor impact force acts, the action of air moving in the vertical direction in the air layer, that is, the bending of the floor base and floor panel materials, is achieved. The compression and expansion force of the air layer that promotes vibration is not only released laterally between the supports, but also passed through the inside of the panel! r! The purpose is to reduce the amount of water by letting it escape in the vertical or horizontal direction.

Specifically, the solution taken by the present invention is that a buffer material layer is provided on the subfloor made of concrete slab etc.
A plurality of panel materials are placed on the cushioning material layer through supports of appropriate heights with an air layer maintained between them and the cushioning material layer, and an appropriate floor finish is applied on the panel materials. A floating floor structure consisting of layers is assumed. The air layer and the side surface or top surface of the panel material are arranged so that when a floor impact force acts on the panel material, the compressed air in the air layer passes through the inside of the panel material and flows out from the side surface or top surface of the panel material. The structure is such that a ventilation hole is provided that communicates with the air conditioner.

(Function) With the above configuration, in the present invention, when an impact force is applied to the floor surface, this impact force is dispersed by the support and transmitted to the cushioning material layer, and is effectively absorbed by the compressive deformation of the cushioning material layer. eased. At the same time, the panel material bends and deforms due to the floor impact force, compressing the air in the air layer below it, but this compressed air not only escapes laterally, but also passes through the ventilation holes to the sides of the panel material. Since it flows out from the top surface, the action of air moving perpendicularly to the bottom surface of the panel material in this air layer, that is, the compression and expansion force, is rapidly reduced, and this reduces the force transmitted to the subfloor via air pressure and this air pressure. The force transmitted to the panel material as a reaction force is reduced, and the bending vibration of the subfloor and panel material is reduced. Therefore, the propagation of the floor impact sound generated by the vibration of the subfloor to the floor below is effectively reduced, and the L-50 level, which was considered difficult to achieve with conventional dry floors, is effectively reduced.
It is possible to exhibit high sound insulation performance of -45°.

(Example) Hereinafter, a practical example of the present invention will be described based on the drawings.

Figures 11 and 2 show a floating floor structure according to an embodiment of the present invention, in which 1 is a floor base made of a concrete slab or the like, and on top of the 1gi floor base 1 is a porous material such as glass wool or rock wool. A buffer material layer 2 is provided.

the above! On the one-sided material layer 2, a plurality of panel materials 3, 3, .
... are placed side by side with the air layer 5 held between them and the cushioning material layer 2. Inside the panel material 3, there is a F! j, i! i
! l! Hollow hole 3a.

3a... are formed in horizontal rows, and the supports 4
For example, a plurality of them are arranged at appropriate intervals along the fireside direction on the lower surface of the panel material 3. Note that the support holes 4 may be provided at intervals to allow the air in the air layer 5 on the lower surface of the panel material 3 to flow smoothly in the lateral direction, or holes may be provided in the support body. Roughly speaking, a floor finishing plate 6 is arranged on the upper surface of the panel material 3.

In addition to the above-mentioned hollow panels, the panel materials 3 include plywood, LVL1 particle board, wood panels such as wood cement boards, reinforced mortar panels, and concrete panels 1 to 3, as shown in FIG. 5 J3 and FIG. There are solid panels such as panels, GRC panels, cement panels (inorganic panels such as exposed panels), and composites in which materials with strong tensile strength such as steel plates and FRP plates are bonded and fixed to these to further increase bending rigidity. For example, as shown in Fig. 3 and Fig. 4, the upper and lower surfaces of the hollow panel 3△ of the wood 71 (the slate boards 3b, 3b are glued and fixed together) are used as the matching panel. .

And, as a feature of the present invention, the panel material 3 is filled with air below! ! A plurality of ventilation holes 7, 7... are provided to communicate between I5 and the hollow hole 3a, and when a floor impact force is applied, the panel material 3 is deformed by bending or compressed by the cushioning material W42. Due to the sinking of the air below the panel material 3, 1!7
5 is compressed, and this compressed air is passed through the ventilation hole 7 and the hollow hole 3a to the panel material 3 as shown in FIG.
It is constructed so that it flows out from the side.

As shown in FIGS. 3 and 4, the ventilation holes correspond to the ventilation holes 7 that pass through the panel material 3 vertically through the hollow holes 3a of the panel material 3, and the ventilation holes 7, as shown in FIGS. A ventilation hole 8 is formed to vertically penetrate the floor finishing material 6, and as shown in FIG. It may be made to flow out from the side surfaces and upward from the floor finishing material 6 on the upper surface of the panel material 3 through the ventilation holes 7 and 8.
In addition, as shown in Fig. 2, holes 7a are formed in the crosspieces of the hollow panel.
may be provided to allow air to flow between each hollow part, and by combining these, the air can flow out even more smoothly. In this case, a breathable carpet or the like is placed on the floor finishing material 6. Further, as shown in FIG. 5, a gap 9 is provided at the joint of the floor finishing material 6.6 by a gap or a hole, and a ventilation hole is provided opposite to the gap 9 and passes through the upper and lower surfaces of the panel material 3. The upper end of the panel member 7 may be opened, so that air can smoothly flow out from the upper surface of the panel member 3. Furthermore, as shown in FIGS. 6 and 7, a ventilation layer formed of lattice grooves 10 or a mesh body is provided on the lower surface of the floor finishing material 6 in correspondence with the upper end openings of the ventilation holes 7 penetrating the upper and lower surfaces of the panel material 3. (not shown) is formed in advance, and this lattice groove 1
Air may be allowed to flow out into the room from the lower space of the baseboard 11 on the side surface or the joint portion of the floor finishing material through the baseboard 11 or the mesh member. Further, in this case, air may be allowed to flow out from the back surface of the wall, that is, between the finished wall surface and the concrete wall.

Therefore, in the above embodiment, when an impact force P is applied to the floor surface, this impact force P is dispersed by the support body 4 that supports the panel material 3! l is transmitted to the shock material layer 2, and this dispersion force P1 is transmitted to the shock material layer 2. 1! ! Material W! Since it is absorbed and relaxed by the compressive deformation of J2, the transmission to the subfloor 1 is effectively suppressed, and the imaging of the subfloor 1 is reduced. At the same time, the rigid panel material 3 bends and deforms due to the impact force P of the floor 1ffi, and sinks by the compressive strain of the buffer material layer 2, compressing the air in the air layer 5 below, but this air pressure is In addition to escaping laterally between the supports 4, the inside of the panel material 3 is exposed through vent holes 7 which are opened on the lower surface of the panel material 3 so as to communicate with the air layer 5, as shown in FIG. 8 or 9. The air pressure in the air layer that is diffused into the air layer, flows out from the side surface or both the side surface and the upper surface, and is sandwiched between the supports 4, 4 quickly decreases. The movement of air acting in the vertical direction (compression/expansion force) is reduced, and the impact force is transferred to I! below the panel material 3 via this air pressure. Shock material layer 2 and floor base 1
The transmission of this air pressure reaction force to the upper panel material 3 is also reduced.

As a result, the 15 ribs of the floor base 1 are suppressed, and the bending vibration and vertical vibration of the panel material 3 are reduced, and this synergistic effect effectively reduces the propagation of the floor m9At to the downstairs. can.

(Experiment example) Next, specifically, the width of the panel material is 909m.

A slate-covered wooden hollow panel with a length of 1,818,111 mm and a thickness of 5 Q mm is prepared. This hollow panel is 15mmJ!
The facing material is a composite panel made by integrally pasting 51 thick slate on the surface of the plywood of ii, and 20 x 201 wooden crosspieces are arranged at intervals of 40111 m between these two-sided materials, and the lower facing material is 15III1φ. 20011111 air vents
They are arranged in one pitch and at a ratio of 40 pieces per sheet. And concrete slab (density I11.230
0 k(1/T11', thickness 150!1Il11), 1! ! ! Glass wool with a diameter of 9/♂ and a thickness of 50 mm is placed on top of the glass wool with a thickness of 12 ml and a width of 60 mm.
Several of the above hollow panels were placed on a plurality of 1IIIl plywood supports arranged at a pitch of 4501111, and a plywood floor finishing shrine with a thickness of 12ff1m was fixed on top of it by nailing to form a floating floor. (Example 1 of the present invention), the weight limit 91 specified in JIS-A1418 for this floor
When impact force was applied using a sound generator and floor impact noise was measured from downstairs, the sound insulation performance as shown by line A in Figure 10 was obtained.

In addition, as Example 2 of the present invention, a hollow panel in which ventilation holes were also provided in the upper side material of the hollow panel of Example 1 of the present invention in correspondence with the ventilation holes of the lower side material was used, and the arrangement was made under the same conditions as above. and created a floating floor. In addition, the position of the ventilation hole in the upper side material should match the joint part of the floor finish, and the floor finish material should be nailed to leave a gap in the joint part so as not to block the exhaust air from the ventilation hole as much as possible. did. The measurement results of this sound insulation performance are shown by line B in FIG.

On the other hand, for comparison with the above-mentioned example of the present invention, a hollow panel without ventilation holes was used as Comparative Example 1, and the measurement results of the sound insulation performance in that case are shown by line C in Fig. 10. . Further, as Comparative Example 2, the performance of the concrete slab itself was measured, and the result was 19, which is shown by line D in FIG.

As is clear from FIG. 10, in Inventive Examples 1 and 2, it is not suitable to place a hollow panel having the same shape and size as Comparative Example 1 on the cushioning material layer, and the lower part of the hollow panel When the air layer is compressed by an impact, the panel is structured so that it can be exhausted from the side surface or both the side surface and the top surface through the hollow part of the panel, so that when an impact force is applied, the compressed air pressure is exhausted almost simultaneously. As a result, the transmission of impact force directly below the hollow panel via air pressure is reduced, and the bending vibration of the hollow panel due to the reaction force of air pressure is also reduced. It can be seen that the passing sound can be reduced by 5 to 15<8 while keeping the thickness of the material layer unchanged. Therefore, the sound insulation grade of Comparative Example 1 is L.
-57, and the performance is such that the floor impact noise exceeds the level of "a little worrisome", whereas in Inventive Example 1, the sound insulation grade is reduced to L-48, and the floor impact noise is The sound becomes almost unnoticeable, and if air pressure is used to smoothly discharge it as in Example 2 of the present invention, the sound insulation rating is further reduced to -44, and floor impact noise is reduced. It can be significantly reduced so that it either doesn't bother you or you can hear it from far away.

(Effects of the Invention) As explained above, according to the floating floor structure of the present invention, when a floor impact force is applied, the air pressure in the air layer below the panel material can be instantly discharged to the outside from the side surface of the panel or the top surface of the panel. This reduces the transmission of impact force to the subfloor via the air pressure and the promotion of bending vibration of the panel material due to the reaction force of the air pressure. This reduces the vibration of the subfloor, reduces the emission of floor impact sound, and provides excellent sound insulation performance.Therefore, it is possible to provide a floor structure suitable for high-rise buildings. Furthermore, the flow of air under the floor reduces the accumulation of moisture and prevents condensation under the floor.

[Brief explanation of the drawing]

Figure 1 shows a cross-sectional view of a floating floor structure according to an embodiment of the present invention;
The figure is a perspective view of the same. FIG. 3 and FIG. 4 are a sectional view and a perspective view, respectively, showing a modified example. 5 and 6 are perspective views showing modified examples of the air outflow structure, respectively, and FIG. 7 is a perspective view of the floor finishing material of FIG. 6 viewed from the back side. FIGS. 8 and 9 are explanatory views showing the outflow flow of air from the air layer when floor impact force is applied, respectively. FIG. 10 is a measurement result chart showing the *sound performance of the example of the present invention in comparison with a comparative example. FIG. 11 is a sectional view showing a conventional floating floor. DESCRIPTION OF SYMBOLS 1... Floor base, 2... Cushioning material layer, 3... Rigid panel material, 3a... Hollow hole, 4... Support body, 5... Air layer, 6... Floor finish Shrine, 7...Vent. Patent Daiken Kogyo Co., Ltd. Mae 1) Hiruyu -1, 11th P. Fig. 9, Fig. 9]] ) Procedural amendment (voluntary) September 18, 1986

Claims (4)

[Claims] (1) A cushioning material layer is provided on the subfloor made of concrete slab, etc., and on top of the cushioning material layer, a plurality of panel materials are placed between the cushioning material layer and the cushioning material layer via supports of appropriate heights. It is a floating floor structure in which the layers are placed side by side while holding each other,
The panel material has a connection between the air layer and the side surface or top surface of the panel material so that when a floor impact force is applied, the compressed air in the air layer passes through the inside of the panel material and flows out from the side surface or top surface of the panel material. A floating floor structure characterized by having ventilation holes that communicate with each other. (2) The floating floor structure according to claim (1), wherein the panel material is a hollow panel having a hollow part opening on the side surface, and the ventilation hole communicates the air layer with the hollow part. (3) The panel material consists of a hollow panel having a hollow part opening on the side surface, and a ventilation hole is provided that communicates the lower surface and the upper surface of the hollow panel through the hollow part, so that the air in the air layer is transferred to the hollow panel. A floating floor structure according to claim 1, wherein water flows from both the side surface and the surface of the panel material through the hollow portion of the panel material. (4) Ventilation holes are provided in the panel material to penetrate vertically,
The floating floor structure according to claim 1, wherein the air in the air layer is allowed to flow from the surface of the panel material to the lower surface of the floor finishing material or to the gaps between the floor finishing materials.