JP2003328550A - Alc composite soundproof floor panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ALC composite floor panel requiring no labor for construction work, with reduced cost, and superior in sound insulating performance. <P>SOLUTION: This ALC composite panel constitutes a floor directly fixed to a beam by being arranged to straddle the beam, and is characterized in that a plywood panel having the proper thickness is stuck to both surfaces of an ALC panel body having the desired thickness, and is also deflected in a projecting shape to the panel lower floor side, and is constituted by having a lead sheet for fixing both end parts to a panel end part. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ALC composite soundproof floor panel used for a building floor. 2. Description of the Related Art Conventionally, ALC panels have been used as building material panels for outer walls, partition walls, floors, etc. of buildings because they are lightweight and have excellent heat insulation, fire resistance and workability. Here, when the ALC panel is used as a floor panel of a building having a low rigidity wooden frame structure, propagation of floor impact sound from the upper floor to the lower floor becomes a problem. Japanese Patent Application Laid-Open No. 2001-032435 discloses a composite panel which solves this problem and can obtain a sufficient strength without using a joist in a wooden frame structure.
Japanese Unexamined Patent Publication (Kokai) No. H10-26095 is known. When this composite panel is used as a floor panel, the weight floor impact sound level can be suppressed to LH-65 to LH-60. [0003] In a space where further soundproofing is required, in addition to the soundproofing of only the floor material, for example, if an air layer and a sound absorbing material layer are provided between the floor and the lower floor ceiling, sound can be more effectively prevented. Can be suppressed. However, when such a space for the air layer and the sound absorbing material layer is provided, the degree of freedom of the ceiling height can be limited, and depending on the way of taking a space, a resonance phenomenon occurs in the space, and at a certain frequency, floor impact occurs. In some cases, the sound level is increased, and a sufficient sound insulation effect may not be obtained. As another method, there is a method such as a floating floor which is floated by vibration-proof rubber or glass wool so that floor impact noise is not propagated to the skeleton. SUMMARY OF THE INVENTION [0004] The present invention has been made to solve the above-mentioned problems of the prior art, and requires no labor and low cost for construction, and has excellent sound insulation.
The aim is to provide a C composite floor panel. [0005] An ALC composite floor panel according to the present invention is an ALC composite panel that is arranged so as to straddle a beam and constitutes a floor directly fixed to the beam. 3
A plywood panel having a thickness of 6 to 15 mm is adhered to one entire surface of the ALC panel main body having a thickness of 5 mm or more and less than 75 mm, and a plywood panel having a thickness of 2 to 12 mm is adhered to the entire other surface. And a lead sheet having both ends fixed to the ends of the panel. In the present invention, the ALC panel body is limited to the one having a thickness of not less than 35 mm and less than 75 mm because the required bending strength of the panel cannot be maintained when the thickness is less than 35 mm. This is because the conditions of the structure supporting the weight are limited, which is not preferable. In the present invention, the reason why the plywood panel is attached to one entire surface of the ALC panel is that even if the thickness of the ALC panel is thin, the rigidity of the entire composite panel is increased and the strength is increased.
And in order to reduce damage to the composite panel during handling, the plywood panel is limited to a thickness of 6 to 15 mm. If the thickness is less than 6 mm, the ALC panel strength and the mounting strength can be sufficiently maintained. , On the other hand, 1
If it exceeds 5 mm, not only is there no difference in the sound insulation effect, but also the handleability and workability deteriorate. The reason why the plywood panel is bonded to the entire other surface of the ALC panel is to maintain the strength and improve the sound insulation even if the thickness of the entire ALC panel is small. The reason for limiting the panel thickness to 2 to 12 mm is that if it is less than 2 mm, there is a problem in tensile strength when the plywood panel is bonded to the lower surface side of the ALC panel, and when it is bonded to the upper surface side, the finishing material is applied. On the other hand, when the thickness is more than 12 mm, not only the thickness is increased but the effect is not so much obtained, but also the handleability and workability are deteriorated. Further, in the present invention, the lead sheet is bent and attached to the lower floor of the panel in a convex manner because an air layer is provided between the lead sheet and the sound source to insulate the lead sheet. This is for making the soundproofing performance of the device more effective. Further, in this case, if the lead sheet touches a structural member inside the ceiling between the ceiling and the floor set on the upper floor, the lead sheet does not sufficiently exhibit a soundproofing effect.
It is preferably 0 mm. That is, if it is less than 10 mm, there is a possibility that the lead sheet will touch the structural member inside the ceiling, while if it exceeds 100 mm, the space between the ceiling and the floor set on the upper floor becomes too large. The thickness of the lead sheet is preferably 0.3 to 1.0 mm in consideration of weight, tensile strength and the like. In other words, after being straddled over the beam, it is the area of concern that the lead sheet is most likely to be damaged at the edges in the width direction of the beam. If the spacing is small and the sag must be reduced, the tension acting on the lead sheet will increase, and the sheet may be damaged beyond the tensile strength of the lead sheet. The upper limit of the thickness of the sheet is preferably 1.0 mm or less. In addition, there is a rule that the sound insulation performance increases as the mass of the material increases, and the rule applies to a lead sheet. Since the present invention also aims to improve the soundproofing of the floor, considering the weight thereof, the lower limit of the thickness of the lead sheet is preferably 0.3 mm. This lead sheet is fixed to the ALC panel at its end by nailing or the like. The specific gravity of the lead sheet is 11.34 g / cm3. The basic impedance level (Lz) of the ALC composite floor panel of the present invention is 75 dB to 9 dB.
A range of 0 dB is preferred. It is known that the impedance level (Lz) of a floor panel can be obtained by the following equation (1). Lz = 20log10Ζb Zb = 8 × (B × m) 1/2 [Ζb: impedance characteristic, B: bending rigidity (N ·
m), m: surface density (kg / m2)] When the basic impedance level (Lz) obtained by the above equation 1 is less than 75 dB, it is difficult to set the above-mentioned heavy floor impact sound level LH to 65 to 60. On the other hand, if Lz exceeds 90 dB, the composite panel becomes too heavy, impairing the handleability and workability, and the bending stiffness is too high to deteriorate the workability. Therefore, the basic impedance level (Lz) Is 75dB-9
A range of 0 dB is preferred. FIG. 1 is a sectional view showing an example of an ALC composite soundproof floor panel according to the present invention, and FIG. 2 is a schematic view showing an embodiment in which the panel is used for a wooden frame structure. It is explanatory drawing, 1 is ALC composite soundproof floor panel, 1-1 is ALC
Panel body, 1-2 is panel upper floor side plywood panel, 1-3
Is a plywood panel on the lower floor side of the panel, 1-4 is a lead sheet, and 2 is a beam. That is, the ALC composite soundproof floor panel 1 according to the present invention has a thickness of 35 mm or more and a thickness of 75 mm as shown in FIG.
ALC panel body 1-1 of less than 1 mm and thickness of 6 mm to 1 mm
5mm panel upper plywood panel 1-2 and 2mm thick
A lower panel plywood panel 1-3 having a thickness of about 12 mm; and a lead sheet 1 having a thickness of 0.3 mm to 1.0 mm, which is bent in a convex shape toward the lower panel side and both ends thereof are fixed to the panel ends. 4
The panel upper floor side plywood panel 1-2 and the panel lower floor plywood panel 1-3 are each made of ALC
The lead sheet 1-4 is adhered to the entire surface of the panel main body 1-1 by, for example, an emulsion adhesive, and both ends of the lead sheet 1-4 are fixed to the ALC panel main body 1-1 by, for example, nails. The lead sheet 1-4 has a flexure d of 10 to 100 mm.
It is attached so that it becomes. When the ALC composite soundproof floor panel having the structure shown in FIG. 1 is used for a wooden frame structure, as shown in FIG. Are formed in two pieces in accordance with the interval between the beams 2. EXAMPLE A width of 606 mm, a length of 1820 mm, and a thickness of 37
12 mm thick coniferous plywood having the same width and length as the panel,
A 4 mm thick softwood plywood having the same width and length as the panel is also adhered to the entire lower surface of the ALC panel with an emulsion adhesive, and is adhered to the lower surface of the panel. Width 620mm, length 18
Heavy floor impact sound test (JIS A14) of an ALC composite soundproof floor panel manufactured by bending a lead sheet having a thickness of 75 mm and a thickness of 0.3 mm in a convex shape and fixing both ends thereof by nailing.
FIG. 3 shows the result of confirming the soundproofing performance of the panel by 18).
Shown in The heavy floor impact sound test was performed by installing the test panels in a model house having the same ceiling, interior materials and other conditions. For comparison, FIG. 3 shows an ALC having a width of 606 mm, a length of 1820 mm, and a thickness of 37 mm.
The same width 606 mm and length 1820 on the entire upper surface of the panel
Adhesive plywood made of softwood having a thickness of 12 mm and a thickness of 12 mm is adhered to an emulsion adhesive, and the same width 606 mm and length 1
A heavy floor impact sound test of a composite panel having no lead sheet and bonded to a plywood made of softwood having a thickness of 820 mm and a thickness of 4 mm with an emulsion adhesive was also shown. As is apparent from the results of FIG. 3, the ALC composite soundproof floor panel of the present invention having a lead sheet at any frequency has a heavy floor impact sound level as compared with the ALC composite panel having no lead sheet. Since it was lowered and no clear coincidence region was observed, it was confirmed that the soundproofing effect was exhibited. As described above, in the ALC composite soundproof floor panel of the present invention, since the lead sheet does not adhere to the ALC panel, its flexibility is maintained, and the sound transmitted from the ALC floor panel body to the air is maintained. However, the sound insulation performance of a lead sheet with low rigidity and a large specific gravity impedes transmission, and it is also possible to suppress the resonance between the floor panel and the lower-floor ceiling finishing material. It is excellent in sound insulation effect in the space up to the ceiling, in addition to its easiness and ease of construction, and is extremely useful especially as a floor panel of a building having a wooden frame structure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing an example of an ALC composite soundproof floor panel according to the present invention. FIG. 2 is a cross-sectional view showing one embodiment when the above panel is used for a wooden frame structure. FIG. 3 is a diagram showing the results of a heavy floor impact sound test in an example of the present invention. [Description of Signs] 1 ALC composite soundproof floor panel 1-1 ALC panel body 1-2 Panel upper floor side plywood panel 1-3 Panel lower floor side plywood panel 1-4 Lead sheet 2 Beam

Claims (1)

Claims: 1. An ALC composite panel which is arranged to straddle a beam and forms a floor directly fixed to the beam, wherein the ALC panel has a thickness of 35 mm or more and less than 75 mm. A plywood panel having a thickness of 6 mm to 15 mm is adhered to the entire surface of the plywood panel, and a plywood panel having a thickness of 2 mm to 12 mm is adhered to the entire other surface. An ALC composite soundproof floor panel comprising a lead sheet fixed to an end of the panel.