JPH051861B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in a floating floor structure in a residence, particularly an apartment complex, which reduces the propagation of floor impact noise generated on the upper floor to the lower floor.

(Prior Art) In general, in mid-to-high-rise buildings, such as apartment complexes, floating floor structures are often used to prevent floor impact noise, which occurs when children jump on the floors, from propagating downstairs. It is being said.

In this floating floor structure, as shown in FIG. 13, a cushioning material b such as glass wool mat is placed on a floor substrate a such as a concrete floor slab, and a floor panel d is placed on the cushioning material b via a supporting material c. is placed and formed. Furthermore, in the above-mentioned floating floor structure, a thick cushioning material b is arranged in the center of the floor surface to improve shock absorption, while joists e are stably arranged in the periphery of the room, such as near the walls. A thin layer of cushioning material f
are arranged. The upper surfaces of the joist material e and each support material c are connected by the highly rigid floor panel d, such as particle board.

Therefore, the impact force caused by a child jumping on the floor panel d is absorbed and alleviated by the cushioning properties of the cushioning material b, such as glass wool, and is less likely to be transmitted to the floor substratum a. Floor impact noise emitted downstairs has been reduced to an unnoticeable level.

(Problem to be Solved by the Invention) In the floating floor structure described above, if a heavy floor impact force such as a child jumping off a chair etc. is applied in the center of the room, the impact force will be sufficiently absorbed as described above. Become. However, the weight impact force is applied to the corner of the room as shown by arrow A in FIG.
For example, if it is applied at a position approximately 1 m from the wall, the floor panel d and the joist e are directly connected, so the joist e near the wall will cause vertical vibration due to the bending deformation of the floor panel d. In particular, this joist e is installed using a thin cushioning material f to minimize sinking when furniture etc. are placed, so the vibration of this joist e is likely to propagate to the subfloor a. This had the disadvantage that the impact sound was amplified and the radiated sound became louder near the corners of the ceiling in the downstairs room (see Figure 13B).

In view of this, the present invention separates the floor panel and the joists and connects them indirectly, so that the deformation of the floor panel does not affect the joists.
The purpose of this is to solve the problem of floor impact noise in the periphery of the room, such as near walls.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, when a floor impact force is applied to a floor panel in the periphery of a room and the floor panel is bent and deformed, the floor panel is bent. The purpose is to prevent vertical vibration of the joists by absorbing deformation.

Specifically, the solution taken by the present invention is that a plurality of floor panels made of rigid boards are laid on the subfloor through cushioning materials such as glass wool mats, and finishing materials are applied as appropriate on the floor panels. It assumes a floating floor structure. Joists are placed around the periphery of the room with appropriate cushioning material in between. Furthermore, the end portions of the floor panels are laid at an appropriate distance from the joists. Further, the upper surface of the joist and the floor panel are connected by a plate-shaped body having low bending rigidity that absorbs bending deformation of the floor panel.

(Function) With the above configuration, in the present invention, the floor panel is bent and deformed when a heavy floor impact force is applied at the periphery of the room such as near the wall of the room, but the plate-like body is flexible and bends more than the floor panel. By absorbing the bending deformation of the floor panel by configuring it with low rigidity,
Even if the end of the plate-like body on the floor panel side is displaced together with the floor panel, the end on the joist side does not displace much, so vertical vibration of the joist is reduced.
Therefore, only the floor panel in the center of the room vibrates vertically on the thick cushioning material and absorbs the floor impact force, and since the floor impact force is hardly transmitted to the joists, thin cushioning material is used. However, vibrations are less likely to be transmitted to the subfloor, and therefore the sound radiated from around the corner of the ceiling in the downstairs room is reduced.

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

FIG. 1 shows a floating floor structure according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a subfloor such as a concrete floor slab, and a wall 2 is continuously erected at the end of the subfloor 1, and the space surrounded by the subfloor 1 and wall 2 is a housing complex, etc. The lower surface of the subfloor 1 is the ceiling of the room 3 downstairs.

A thick cushioning material 4 made of fibrous material such as glass wool mat or rock wool mat is arranged on the floor substrate 1, and supporting materials 5 such as floor joists are placed on the cushioning material 4 at appropriate intervals. A plurality of floor panels 6 are arranged in parallel on the support material 5 and are laid and fixed to the support material 5. The floor panel 6 is made of, for example, plywood, particle board, or particle board with a thickness of 15 mm or more.
A highly rigid board made of a wood board such as a wood cement board, slate, a cement board, or a composite material thereof is used. Furthermore,
A finishing material 7 made of wood or the like is placed on the floor panel 6 to form a floating floor structure.

The end of the cushioning material 4 is provided at a distance from the wall 2 etc. in the periphery of the room 3, and this thick cushioning material 4
is located only in the center of room 3. A thin cushioning material 8 is disposed in the gap between the end of the cushioning material 4 and the wall 2, and extends over the rising surface of the wall 2, etc., and a joist material 9 is disposed on the cushioning material 8. There is.

On the other hand, as a feature of the present invention, the ends of the floor panel 6 are laid at an appropriate distance from the joists 9, and the floor panel 6 is placed only in the center of the room 3, and the floor panel 6 and the joists The upper surface of the material 9 is connected to the upper surface of the floor panel 6 via a bonding material 11 by a plate-like member 10 that absorbs bending deformation of the floor panel 6. That is, approximately half of the bonding material 11 is fitted and fixed to the end of the floor panel 6, and the plate-like body 10 is attached to the floor panel 6 from the upper surface of the outer half of the bonding material 11 to the upper surface of the joist 9.
and are fixed flush. The plate-like body 10 is the most important aspect of the present invention, and is formed of a plate-like material that has lower bending rigidity than the floor panel 6, is flexible and relatively easy to bend, and is made of, for example, thin plywood with a thickness of 9 mm or less. Even if the floor panel 6 is bent and deformed due to floor impact force, only the joint end side of the plate body 10 with the joint material 11 will follow the floor panel 6 and be displaced, and the joist material 9 will be displaced.
The joint end side is configured so that there is almost no displacement.

Therefore, as shown in FIG. 2, when a heavy floor impact force P is applied to the edge of the floor panel 6 in the periphery of the room 3, for example, the impact force P caused by a child jumping off a chair or the like is applied to the wall. 2, the impact acting part of the floor panel 6 sinks through the thick cushioning material 4, and then rises slightly due to the reaction of the sinking, as shown in Figure 3, causing vertical vibration. will occur. Then, the end portion of the floor panel 6 will move up and down with respect to the joist material 9. At this time, since the plate-like body 10 is formed of a flexible plate material with lower bending rigidity than the floor panel 6, the plate-like body 10
Although the joint end on the floor panel 6 side moves up and down with the floor panel 6, it easily curves at the center to absorb the vertical movement, and the joint end on the joist material 9 side hardly moves. do not have. Therefore, only the floor panel 6 vibrates vertically on the thick cushioning material 4, resulting in floor impact force P.
Since the joists 9 do not cause any vertical vibration, the vibrations of the joists 9 are less likely to propagate to the subfloor 1, and the (see part c in the figure) can be prevented from becoming louder, and the sound insulation performance can be improved.

The distance between the floor panel 6 and the joist 9 is preferably 30 mm or more in order to insulate the floor panel 6 from vibration and deformation. It is preferable to keep it within 200mm to prevent the deflection from becoming large.

Figures 4 to 6 show other plate-like bodies 12, 13, 14.
It shows. The plate-like body 12 in FIG. 4 is a flat plate 12a.
It is formed by forming a large number of notch grooves 12b in parallel on the lower surface of the holder. In addition, the plate-like body 13 in FIG.
is a rubber sheet 13 between two veneers 13a, 13a.
It is formed by sandwiching b into a sandwich. Further, the plate-like body 14 shown in FIG. 6 is formed by drilling a large number of through-holes 14b vertically through one flat plate 14a. Each of these plate-like bodies 12, 13, and 14 has a bending rigidity lower than that of the floor panel 6, and is easily bent.
The structure is designed to absorb bending deformation.

In addition, FIGS. 7 to 9 show other plate-like bodies 15, 1.
6 and 17 are shown in the attached state. Plate-shaped body 15 in FIG.
The joint end on the floor panel 6 side is directly joined to the floor panel 6. That is, instead of being joined to the floor panel 6 via the bonding material 11, the plate-like body 10 shown in FIG.
A letter-shaped step portion 6a is formed, and a plate-like member 15 is joined from the step portion 6a to the upper surface of the joist material 9. Further, the plate-like body 16 shown in FIG. 8 is made by integrating the plate-like body 10 shown in FIG. and is formed into a hook shape, and the fitting part 1
6c is fitted into the end of the floor panel 6 to form the plate-like body 1.
6 is joined to the floor panel 6. These plate-like bodies 15 and 16 may be any of the various plate-like bodies 12, 13, and 14 shown in Figs. 4 to 6, in addition to the thin plywood plate 10 shown in Fig. 1. The bending deformation of the floor panel 6 can be absorbed.

The plate-like member 17 shown in FIG. 9 also serves as the finishing material 7 shown in FIG. 1, and is laid from the upper surface of the joist 9 to the entire upper surface of the floor panel 6. The plate-like body 17 has a concave groove 1 on the lower surface of the flat plate 17a.
7b are cut out at predetermined intervals, and the whole is formed to have lower bending rigidity than the floor panel 6 and to be easily bent.

Figures 10 and 11 show other floor panels 18, 1.
9 is shown. The floor panel 18 shown in FIG. 10 is formed by punching a large number of air escape holes 18b vertically penetrating a panel material 18a that is completely filled inside. In addition, in the floor panel 19 shown in FIG. 11, a crosspiece 19c is interposed between the upper and lower surface members 19a and 19b at an appropriate interval, and between the crosspieces 19c there is a hollow hole 1.
9d, and the hollow hole 19d is opened on both sides, while the lower panel 19b is configured with a large number of ventilation holes 19e that communicate the lower part of the floor panel 19 and the hollow hole 19d. These floor panels 1
8, 19, when the floor panels 18, 19 sink due to the floor impact force, the floor panels 18, 19 sink.
The air below 19 will be compressed, and this compressed air will flow upward through the air escape hole 18b in the floor panel 18 of FIG. will flow out to the side through the ventilation hole 19e and hollow hole 19d,
There is no recoil or vibration amplification due to the rise in air pressure below the floor panels 18, 19, and the entire floor vibrates gently at a low frequency.

Therefore, by forming the hollow holes 19d etc. in the floor panels 18 and 19, the floor panel 1
8 and 19 gently vibrate at low frequency vibrations below 60 Hz that are difficult for the human ear to hear, and can reduce the sound emitted to the room 3 downstairs, and are connected to the joist material 9 such as the wall 3. Unreasonable bending stress does not act on the plate-like bodies 10, 12-17 which are bent, and fatigue due to repeated bending deformation of the plate-like bodies 10, 12-17 can be reduced.

In the case of the floor panel 18 shown in FIG. 10, the finishing material 7 may be a breathable carpet or the like, or a grooved plate 17 may be used as shown in FIG. When the grooved plate member 17 and the floor panel 18 are combined as shown in FIG. , the air outflow effect is enhanced and vibrations can be further reduced.

(Experiment example) Next, concrete slabs were made to have a thickness of 150 mm as the floor base 1, glass wool mats were made to have a thickness of 50 mm (64 kg/m ³ items) as the cushioning material 4, and the floor panels were made as shown in Figure 11. Using the floor panel 19, the thickness of the facing materials 19a and 19b is 20 mm and the timber 19
The thickness of c is 12 mm, and the diameter of vent hole 19e is 10 mm.
200 pieces, the support material 5 is 18 mm thick, the finishing material 7 is a wood material with back grooves and the thickness is 15 mm, the joist material 9 is provided, and the cushioning material 8 is glass wool with a thickness of 12 mm.
mm (96Kg/m ³ items). Then, the interval between the joists 9 and the floor panel 6 is set to 50 mm, and the plate-shaped body 14 is made of plywood with a thickness of 9 mm and a diameter of 10 mm, as shown in FIG.
Two rows of through holes 14b were formed. Therefore, an impact force P was applied to a point 1m from the wall 2 using a weight impact sound generator specified by JIS, and the floor impact sound was measured from downstairs room 3, as shown by line D in Figure 12. Achieved excellent sound insulation performance.
On the other hand, in order to compare with the examples of the present invention, as a comparative example 1, a floor panel d made of particle board was directly joined to a joist e as shown in FIG. When we measured the sound insulation properties of the floor panel 19 used in the invention experiment example (the one in Figure 11) directly bonded to the joists, we found the results shown by lines E and F in Figure 12. Summer.

As is clear from FIG. 12, in the embodiment of the present invention, the deformation of the floor panel 19 is absorbed by the plate member 14, so the vibration of the floor panel 19 is no longer propagated to the joists 9, and the joists 19 Because it doesn't vibrate,
While the sound insulation performance is improved, in Comparative Example 1, absorption by the edge joists and floor panels is small, and in Comparative Example 2, the absorption by the edge joists and floor panels is small.
In this case, although there is some absorption by the floor panels, the absorption at the edge joists is small. Therefore, Comparative Example 1
The sound insulation grade of Comparative Example 2 is L-53, and the sound insulation grade of Comparative Example 2 is L-53.
-50, in the example of the present invention, the sound insulation grade is reduced to L-45, resulting in a significant reduction in floor impact noise.

(Effects of the Invention) As described above, according to the floating floor structure of the present invention, the ends of the floor panels are laid at an appropriate distance from the joists arranged around the periphery of the room, and the upper surface of the joists Because the floor panel is connected to the floor panel using a plate-like body with low bending rigidity that absorbs the bending deformation of the floor panel, a heavy floor impact force is applied to the corner of the room, for example, at a position approximately 1 m from the wall, causing the floor panel to bend. Even if deformation occurs, the plate-like body absorbs the deformation, so the deformation of the floor panel does not affect the joists, and vertical vibration of the joists can be reduced. Therefore, the vibration of the floor panel is less likely to propagate through the joists to the subfloor, making it possible to reduce sound radiated from the corners of the ceiling in rooms downstairs, demonstrating excellent sound insulation performance. be able to.

[Brief explanation of the drawing]

1 to 11 show embodiments of the present invention, in which FIG. 1 is a sectional view of a floating floor structure, and FIGS. 2 and 3 are sectional views of the same showing a state in which a floor impact force is applied. FIG. 4, FIG. 5, and FIG. 6 are sectional views showing other plate-like bodies. FIG. 7, FIG. 8, and FIG. 9 are cross-sectional views showing how other plate-like bodies are connected. FIGS. 10 and 11 are sectional views showing other floor panels. FIG. 12 is a measurement result diagram showing the sound insulation performance of the example of the present invention in comparison with a comparative example. FIG. 13 is a sectional view showing a conventional floating floor structure. 1...Floor base, 2...Wall, 3...Room, 4...
Cushioning material, 6, 18, 19... Floor panel, 7... Finishing material, 8... Cushioning material, 9... Joist material, 10, 1
2, 13, 14, 15, 16, 17... plate-shaped body.

Claims (1)

[Claims] 1. In a floating floor structure in which a plurality of floor panels made of rigid boards are laid on the floor sub-floor through cushioning materials such as glass wool mats, and appropriate finishing materials are applied on the floor panels, cushioning materials are placed as appropriate around the periphery of the room. A joist is placed through the joist, and the end of the floor panel is laid at an appropriate distance from the joist, and the upper surface of the joist and the floor panel absorb bending deformation of the floor panel. A floating floor structure characterized by being connected by plate-like bodies with low bending rigidity.