JP2552762B2 - Floor sound insulation structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a floor structure of a building,
In particular, it relates to a floor sound insulation structure having a soundproof function.

[0002]

2. Description of the Related Art Conventionally, as a floor structure constituting a wooden building unit or the like, a structure as described in JP-A-62-55357 has been used. In this floor structure, an outer frame is formed by a plurality of floor girders, a plurality of floor girders arranged in parallel with each other is fixed to each of the floor girders facing each other, and a lower floor ceiling plate is attached to the floor girder. It is fixedly configured.

[0003]

However, in such a conventional floor structure, the floor impact sound (heavy impact sound or light impact sound) generated in the upper floor room is lower than the lower floor ceiling plate. It may be transmitted to people and impair their habitability. An object of the present invention is to improve floor impact sound insulation performance of a floor structure.

[0004]

According to the present invention, an outer frame is formed by a plurality of floor girders, and a plurality of floor girders arranged in parallel with each other is fixed to each of the floor girders facing each other. In a floor structure constructed by fixing a floor plate to the upper part of a floor beam, ceiling hangers are placed in parallel between the adjacent floor beams and the lower surface is below the lower surface of the floor beam. In this way, they are fixed to the floor girders facing each other, and the ceiling boards of the lower floors are hung and supported by these ceiling hangers through the rim, and weights are provided to the ceiling hangers that correspond to the parts of the floor structure with large vibration. It was done like this.

[0005]

According to the present invention, there are the following actions (1) to (2). (1) According to the present invention, a vibration pattern as shown in FIG. 6 is obtained as a result of analyzing the vibration pattern of the low-pitched portion (63 Hz band) of the heavy floor impact sound generated in the floor structure without the weight. It was

According to the present invention, based on the analysis of this vibration pattern, since an appropriate weight is provided on the ceiling hanging tree in a place where the vibration is large, the weight suppresses this vibration and excellent vibration damping is achieved. The effect can be secured. However, in the conventional floor structure,
For example, when a child jumps or runs around on the floor of a building, the entire floor is vibrated mainly by the floor beam, and the vibration of the entire floor causes a low-pitched portion of the heavy floor impact sound. At this time, in the floor structure of the present invention, as described above, since the vibration of the floor beam is effectively damped by the weight, as a result, the vibration of the entire floor is damped, and the heavy floor impact of the low-pitched part is generated. The sound can be reduced and comfort can be improved.

(2) Compared with the conventional ceiling structure in which the ceiling plate is directly fixed to the floor beam, the suspended ceiling structure in which the edge of the ceiling plate is supported by the ceiling hanging tree is adopted. It is possible to further reduce the solid propagation path of the vibration generated in, and further improve the lightweight floor impact sound insulation performance which is a general effect of the suspended floor ceiling structure.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a sectional view showing a floor sound insulation structure according to an embodiment of the present invention,
2 is a plan view schematically showing a floor sound insulation structure, FIG. 3 is a perspective view of an essential part of FIG. 2, FIG. 4 is a schematic view showing a wall-type building unit, FIG. 5 is a schematic view showing a unit building, and FIG. It is a schematic diagram which shows the vibration pattern of the conventional floor structure.

The unit building 10 shown in FIG.
A plurality of lower floor building units 12 are arranged adjacent to each other, a plurality of upper floor building units 13 are arranged adjacent to the lower floor building units 12, and the upper floor building units 1
A roof unit 14 is mounted on the upper part of 3. here,
As shown in FIG. 4, the building units 12 and 13 are of a wall type and include a floor structure (floor panel) 21 and a wall panel 22 which is erected on a side edge portion of the floor structure 21.

The floor structure 21, as shown in FIGS.
An outer frame is formed by nailing four wooden floor girders 23 (side joists and end joists) to each other, and a plurality of floor joists 24 (joists) arranged in parallel are opposed to each other. The floor girders 24 are bridged between 23 and 23, and both ends of each floor girder 24 are fixed to each of the floor girders 23 facing each other by nailing. Further, in the floor structure 21, the floor plate 25 is directly fixed to the upper portion of each floor beam 24 by an adhesive or nailing.

Further, in the floor structure 21, the ceiling hangers 32 are arranged in parallel between the adjacent floor joists 24, and the ceiling hangers 32 of the ceiling hangers 32 are arranged on the floor girders 23 facing each other. The lower surface is nailed and fixed so that the lower surface is 5 mm below the lower surface of the beam 24. Then, at a distance of 1 to 1.5 m from the center of the floor panel 21 in the long side direction, and above the ceiling hanging tree 21 at a distance of 1/4 of the short side distance from the center of the short side direction,
Iron piece weighing 1kg with screw holes (weight 31) (total 4
Individual pieces) are fixed to the ceiling hanging tree 32 with screws (not shown).
Then, a field edge 41 provided orthogonally to the hanging tree 32 is fixed to the lower surface of the ceiling hanging tree 32 with an adhesive or nailing, and a lower floor of a plaster board is provided on the lower surface of each field edge 41. Ceiling board 4
2 is fixed with an adhesive or nailing.

Next, the operation of the above embodiment will be described. (1) It is possible to adjust the vibration of the ceiling portion using the weight 31 and ensure a good vibration damping effect on the floor structure 21 as an effective mass. However, in the conventional floor structure, when a child bounces around or runs around on the floor of the building 10, the entire floor vibrates mainly due to the excitation of the floor beam 24, and the vibration of the entire floor vibrates at a low level in the heavy impact sound. Cause the department. This time,
In the floor structure 21, since the vibration of the floor beam 24 is effectively damped by the weight 31 as described above, the vibration of the entire floor is attenuated as a result, and the low weight impact sound is reduced. , Habitability can be improved.

(2) The floor sill 2 is connected to the edge 41 of the lower floor ceiling plate 42.
4 compared to the general suspended ceiling structure that directly connects to 4
Since the suspended ceiling that supports the field edge 41 of No. 2 on the ceiling suspension tree 32 is adopted, the solid propagation path of the vibration generated in the upper floor board is further reduced, and the lightweight floor impact sound that is a general effect of the suspended floor ceiling structure. The breaking performance can be further improved. In addition, since the floor sound insulation floor structure of the present invention accommodates the above-mentioned weight within the range of the normal floor thickness, when reducing the floor impact noise, there is a problem such as increasing the floor thickness and lowering the ceiling height. Not accompanied.

[0014]

As described above, in the floor sound insulation structure of the present invention, the floor impact sound insulation performance of the floor structure can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing a floor sound insulation structure according to an embodiment of the present invention.

FIG. 2 is a plan view schematically showing a floor sound insulation structure.

FIG. 3 is a perspective view of an essential part of FIG.

FIG. 4 is a schematic diagram showing a wall-type building unit.

FIG. 5 is a schematic diagram showing a unit building.

FIG. 6 is a schematic view showing a vibration pattern of a conventional floor structure.

[Explanation of symbols]

 23 floor girders, 24 floor girders, 25 floor boards, 31 weights, 32 ceiling hangers, 41 field edges, 42 lower floor ceiling boards.

Claims (1)

(57) [Claims] 1. An outer frame is formed by a plurality of floor girders, each of a plurality of floor girders arranged in parallel to each other is fixed to each of the floor girders facing each other, and a floor plate is further provided on the upper part of the floor girder. In a fixed floor structure, ceiling hangers are placed between adjacent floor beams in parallel with the floor beams, and the lower surface of the ceiling beams is lower than the lower surface of the floor beams so that the floor beams can face each other. The floor sound insulation is characterized by fixing and supporting the ceiling boards of the lower floor by suspending them from the ceiling hanging trees through the rim, and providing a weight to the ceiling hanging trees corresponding to the part of the floor structure where the vibration is large. Construction.