JP2005180178A - Sound insulating floor slab structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a sound of the upper and lower floors by a concrete double floor, an air layer and an air vent. <P>SOLUTION: This constitution is a sound insulating floor slab structure for cutting off a floor impulsive sound and vibration in an upper slab, by properly arranging the resonance preventive air vent of the upper and lower slabs in an upper surface slab, by laying a sound absorbing material in a space by constructing the slab by arranging the space in the slab upper part, by integrally molding the slab in a skeleton such as a beam. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a sound insulation floor slab structure.

Conventionally, there are structures in which the thickness of the concrete slab is increased for the purpose of sound insulation on the upper and lower floors, and a dry double floor with a sound insulation function.

Although it is generally said that the wet floating floor structure is excellent, it is constructed by placing a glass slab or other anti-vibration material on the top surface of the concrete slab and placing a concrete slab on top of it, but the anti-vibration material is used for vibration of the top surface slab. Cannot be absorbed and transmitted to the lower slab, and the purpose of sound insulation cannot be exhibited.

For example, there is a sound insulation floor structure disclosed in JP-A-5-25918. However, this sound insulating floor structure has a large air layer of 300 mm and has a high floor height and is not feasible in an urban area with many height restrictions, and there is also a problem such as floor shaking of the living room due to the large and joist structure.

The present invention has been made in view of the facts as described above, and solves the problem of sound on the upper and lower floors by using a double floor of concrete, an air layer, and a vent hole.

Means to solve the problem

The configuration of the present invention made for the purpose of solving the above problems is that a slab is integrally placed on a frame such as a beam, a space is provided above the slab, a slab is constructed, and a sound absorbing material is disposed in the space. The sound insulation floor slab structure is characterized in that a ventilation hole for preventing resonance of the upper and lower slabs by an intermediate air layer is appropriately disposed in the upper surface slab to block floor impact sound and vibration in the upper slab.

The bottom slab is cast in-situ with a frame such as a beam, but the top slab is made of cast-in-place concrete, precast concrete floor slab, lightweight foam concrete floor slab, etc.

The vent holes to be appropriately arranged are appropriately arranged according to the slab control area.

The upper slab end is supported by a large beam-large beam, a large beam-small beam, a small beam-large beam, or a support member that replaces the beam.

In the case of a structure in which the beam is not exposed on the wall surface, such as a wall structure, the upper surface slab is supported by a support member that replaces the beam on the wall.

When the lower slab is placed at the top of the beam, the upper slab is supported by the increased concrete continuously placed on the beam.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings and reference numerals. FIG. 1 is a cross-sectional view showing an example of the present invention. A slab 1 is integrally placed on a structural beam frame 3 and a sound absorbing material 6 is laid on the upper surface of the slab, and a precast concrete plate is beamed on the upper side through an air layer 7. This is an example in which the vent hole 4 is provided at the upper end and disposed at the upper end. FIG. 2 shows that the lower slab 1 is placed on the top of the beam, and the upper slab 2 is made of plain concrete or lightweight concrete, supported by the increased concrete portion 8 continuously placed on the beam, using a deck plate or the like as a formwork. It is an example.
FIG. 3 shows another example in which the shock absorbing material 9 is arranged on the slab 2 support portion.

Of course, the shape and material of the sound insulation floor slab structure in the present invention are not limited to those described above.

The invention's effect

By constructing an apartment house or the like using the sound insulating floor slab structure of the present invention, it can be expected that the impact sound level of the floor is lowered, and it is useful for preventing conflicts due to noise problems due to differences in living time.

Sectional drawing of the example of this invention sound-insulation floor slab structure. Sectional drawing of an example of this invention sound-insulation floor slab structure. Sectional drawing of another example of this invention sound-insulation floor slab structure.

Explanation of symbols

1 Slab 1
2 Slab 2
3 Structural beam frame 4 Vent hole 5 Deck plate 6 Sound absorbing material 7 Air layer 8 Additional concrete 9 Shock absorbing material

Claims (4)

A sound insulation floor slab structure in which a slab 1 is integrally placed on a structural beam frame, a space (air layer) is provided above the slab, a slab 2 is constructed, and vent holes are appropriately arranged in the upper surface slab 2 . The sound insulating floor slab structure according to claim 1, wherein the slab 2 is cast-in-place concrete or precast concrete floor slab. The sound insulation floor slab structure according to claim 1 or 2, wherein a sound absorbing material is disposed in the space (air layer). The sound insulation floor slab structure according to any one of claims 1 to 3, wherein an impact absorbing material is disposed between the beam supporting the slab 2 or between the support member and the slab 2.

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