JP2006112061A - Sound insulation floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a sound insulation floor which employs wood having constant characteristics, and is low in cost and high in sound insulation performance. <P>SOLUTION: According to the structure of the sound insulation floor, rubber isolators 5 are set on a concrete slab 3 at suitable intervals along a wall 2 and a beam 31 forming a structural skeleton, and a side floor joist 41 and an end floor joist 42 each formed of a panel consisting of a frame member and structural plywood secured into the same by screws or the like, is also set on the rubber insulators. The rubber insulator is set between the wall 2 or the beam 31 and the floor joist as needed, and the side floor joist 41 and the end floor joist 42 are rigidly connected together by fittings or the like. Further, floor joists 45 each formed of a panel member is extended between the side floor joists 41 at suitable intervals, and secured to the side floor joists 41 by the fittings or the like, to form a floor joist assembly on which a floor 6 is set. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sound insulation floor with improved sound insulation performance used in a housing complex of a concrete structure.

  Concrete slabs are formed as partitions on the upper and lower floors of concrete buildings. Sounds such as music generated by residents on the upper floor, and impact sounds when walking sounds and objects are dropped on the floor surface are transmitted to the lower floor, which is noise for residents on the lower floor and provides sound insulation performance to the floor. However, it is necessary to prevent noise from being conducted to the lower floor.

  Conventional sound insulation floors have a wet floating structure in which a sound absorbing material such as glass wool is laid on a concrete slab, concrete is placed on top of it, and the floor surface is finished with a finishing material on the leveling mortar. In addition, a curing period is required for placing concrete on site, and when a pipe is installed between the sound absorbing materials, there is a problem that the sound insulation performance is lowered. In addition, the upper concrete floor resonates with a heavy-weight (very low frequency) impact sound, and an annoying floor impact sound at around 63 Hz is transmitted to the lower floor, which causes discomfort to the lower floor residents. It was. (See Patent Document 1)

In addition, as shown in Patent Document 2 (Japanese Patent Laid-Open No. 2000-73526), as a dry sound insulation double floor, support members with damping rubber are arranged at predetermined intervals on a concrete slab of a building structure. In addition, a floor base panel is disposed thereon, and if necessary, a sound absorbing material is spread on the slab to form a sound insulating floor.
In Patent Document 3 (Japanese Patent Laid-Open No. 5-25918), in order to insulate air sound and impact sound, a steel fork is installed on the beam via vibration-proof rubber, and between the slab and the floor surface. There has been proposed a sound insulation floor in which an air layer is formed and a glass wool sound absorbing material is laid on the slab surface.
Japanese Utility Model Publication 2-9639 JP 2000-73526 A Japanese Patent Laid-Open No. 5-25918

The present invention intends to obtain a floor having a high sound insulation effect using a wooden material in a sound insulation floor of a concrete building. The properties of wood differ depending on the production area, and the physical properties vary greatly depending on the degree of dryness. In particular, wood that is not sufficiently dried may be deformed after being incorporated into a structure, and cannot be used for a sound insulation floor.
An object of the present invention is to make it possible to construct a sound insulation floor that is easy to construct and has high sound insulation performance at a low cost as a floor structure having high rigidity, while making the characteristics of wood constant.

In a concrete structure, a sound insulation floor is a panel in which a structural plywood is attached to a frame member, and the joist is installed on a beam or a slab near the wall or on the beam via an elastic material.
Further, in the concrete structure, the sound insulation floor is constructed by using engineering wood as a joist and installing the joist on a slab in the vicinity of a beam or a wall or an elastic material on the beam.
Furthermore, the sound insulation floor is such that the cross section of the joist near the structural material of the concrete structure is larger than the cross section of the joist of other portions.

As the panel material, two-by-four, two-by-six, or the like, or engineered wood processed timber, which is made uniform in the characteristics of the raw material wood and does not cause secular change, is used.
Engineering wood (EW material) is a general term for wood-based members that can be used as a structural material manufactured mainly using an adhesive. Common ones include I-beams, laminated materials, LVL (structural veneer laminates) and the like.

EXAMPLES Hereinafter, the present invention will be described based on examples of apartment houses.
As shown in FIG. 1, the concrete structure is composed of a pillar 1, a wall 2, and a slab 3. As shown in a cross-sectional view of FIG.

  On the concrete slab 3, the anti-vibration rubber 5 is installed at appropriate intervals along the wall 2 and the small beam 31, which are structural frames, and a side joist 41 composed of a panel in which a structural plywood is fixed to the frame member with screws or the like; The end joist 42 is installed. Anti-vibration rubber (not shown) is installed between the wall 2 and the small beam 31 and the joists as necessary, and the joints between the side joists 41 and the end joists 42 are fixed with hardware or the like. In this embodiment, the side joists 41 and the end joists 42 have a large cross section by overlapping two panels.

  Further, a joist 45 made of a panel material is also spanned between the side joists 41 at an appropriate interval and fixed with a hardware or the like. The floor 6 is mounted on the joist set constructed as described above. The floor 6 installs a flooring material on the floor base material of the particle board. If necessary, install a damping sheet between the floor floor and the flooring.

  Since a closed space is formed by the joist, flooring, and slab 3 and there is a risk of resonance, the side joist 41 does not form a sealed space under the floor by forming a slit or hole through which air can escape. Do it.

FIG. 4 shows an example in which a beam 31 is formed on the veranda, and an end joist 42 is disposed on the anti-vibration rubber 5 in the vicinity of the beam 31, and between the beam 31 and the end joist 42. A vibration-proof rubber 51 is interposed between the two. The end of the floor 6 is supported by a joist 4 provided with a vibration isolating function installed on the beam 31.
The sound insulation floor of the present invention exhibits sufficient sound insulation performance against light and heavy impact sounds.

By using the wood panel material as the joist, it is possible to effectively use the wood, and the construction can be easily performed by a dry method, and can be finished with high accuracy without requiring a skilled worker.
Residents can live their daily lives freely without worrying about the neighbors and residents on the lower floors, and can live a comfortable life.

The joist figure of the Example of the sound-insulating floor of this invention. Sectional drawing of the Example of the sound-insulating floor of this invention. Sectional drawing of the Example of the sound-insulating floor of this invention. Sectional drawing of another Example. Sectional drawing of the conventional sound insulation floor. Sectional drawing of the conventional sound insulation floor.

Explanation of symbols

1 pillar 2 wall 3 slab 31 beam 4 joist 41 side joist 42 end joist 5 anti-vibration rubber 6 floor

Claims (4)

In a concrete structure, a sound insulation floor in which a panel having a structural plywood fixed to a frame member is used as a joist, and the joist is installed on a slab near the beam or wall or on the beam via an elastic material. In a concrete structure, a sound insulating floor in which engineering wood is used as a joist, and this joist is installed on the slab near the beam or wall, or on the beam via an elastic material. 3. The sound insulating floor according to claim 1, wherein a cross section of the joist near the structural material of the concrete structure is larger than a cross section of the joist of other portions. 4. The sound insulation floor according to claim 1, wherein an elastic member is interposed between the joist side surface and the structural material.

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