JPH0464639A - Floor structure - Google Patents

Abstract

PURPOSE:To improve the extent of floor impact noise interrupting performance by forming an outer frame with four floor large beams, anchoring two floor small beams, parallelly set up with each other, to the floor large beams, and locking a floor plate to the top of each small beam. CONSTITUTION:An outer frame is formed with four floor large beams, while two floor small beams 24, parallelly set up with each other, are anchored to the floor large beams, and a floor plate 25 is locked to the top, forming a floor structure 21. Then, a connecting member 31 connecting these floor small beams 24 is attached to the opposite side of the floor small beams 24 where this floor structure 21 adjoins, while a ceiling hanger 32 is parallelly set up. Next, this ceiling hanger 32 is locked to the opposite floor large beam and the connecting member 31, and a lower floor ceiling board 42 is slung from this ceiling hanger 32. With this constitution, the extent of light and heavyweight impact noise interrupting performance is thus improbable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floor structure with good floor impact sound insulation performance.

[Prior Art] Conventionally, as a floor structure constituting a wooden building unit or the like, a floor structure as described in Japanese Patent Application Laid-Open No. 62-55358 has been used.

This floor structure has a plurality of floor girders forming an outer frame, each of the plurality of floor girders arranged in parallel being fixed to each of the opposing floor girders, and the upper part of each floor girder being fixed to each other. It consists of fixed floorboards.

[Problems to be Solved by the Invention] However, in buildings constructed using the above-mentioned floor structures, floor impact noise (heavy floor impact sound or light floor impact sound) occurring in the upper floor rooms This may be transmitted to rooms downstairs, impairing livability.

An object of the present invention is to improve the floor impact sound insulation performance of a floor structure.

[Means for Solving the Problems] The present invention according to claim 1 forms an outer frame with a plurality of floor girders, and connects each of the plurality of floor girders arranged in parallel to the opposing floor girders. In a floor structure constructed by fixing a floor plate to the top of each floor beam, connecting members are attached to opposing sides of adjacent floor beams to connect the floor beams. At the same time, ceiling hanging trees are arranged parallel to each other along the entire length of the floor beams in the connecting material arrangement area between adjacent floor beams, and the ceiling hanging trees are fixed to each of the opposing floor beams and the connecting material. , the lower floor ceiling board is suspended and supported from the ceiling hanging tree.

According to a second aspect of the present invention, a plurality of connecting members are attached to opposing side surfaces of adjacent floor beams at a plurality of positions in the longitudinal direction.

[Action] According to the present invention as set forth in claim 1, there are the following effects (1) and (2).

(1) As a result of the present inventor's analysis of the vibration pattern of the bass part (63 Hz band) of the heavy floor impact sound generated in a conventional floor structure, FIG. 6 was obtained. In Figure 6, a, b, c
, d are the vibration patterns of each floor beam (displacement of the floor beam in the vertical direction perpendicular to the floor surface). According to FIG. 6, among the vibration patterns of adjacent floor beams, a, d It is recognized that the sets of and the sets of c have completely opposite phases to each other.

Therefore, in the present invention, based on the analysis of this vibration pattern, adjacent floor beams are connected to each other using connecting materials, and a, b and c, and c and d in the above vibration pattern are used.
It has been discovered that a good vibration damping effect can be ensured by suppressing each relative displacement of .

However, in conventional floor structures, when children jump or run around on the floor of a building, the entire floor vibrates mainly due to the excitation of the small beams, and this vibration of the entire floor produces the low-pitched part of the heavy floor impact sound. Cause. At this time, in the floor structure of the present invention, as described above, the vibrations of the floor beams are effectively damped, and as a result, the vibrations of the entire floor are damped, and the low-pitched heavy floor impact noise is suppressed. This can improve livability.

(2) Compared to a general suspended ceiling structure in which the hanging wood of the ceiling board is directly fixed to the floor beam, we have adopted a suspended ceiling structure in which the hanging wood of the ceiling board is supported on the floor beam through a connecting material. Therefore, the solid propagation path of vibrations generated in the floorboards of the upper floor can be further reduced, and the lightweight floor impact sound insulation performance, which is a general effect of suspended ceiling structures, can be further improved.

According to the second aspect of the present invention, the following effect (3) is achieved.

(3) By attaching connecting members at multiple positions in the longitudinal direction of the floor girders, both ends of the ceiling hanging tree are fixed to each of the opposing floor girders, and multiple intermediate parts are attached to each of the multiple connecting members. It will be fixed. Therefore, as the ceiling hanging tree is supported at multiple points and is well damped, the heavy floor impact sound from the ceiling hanging tree to the lower floor ceiling board is reduced mainly in the low frequency range.
Improves heavy floor impact sound isolation performance.

[Example] Fig. 1 is a sectional view showing a floor structure according to an embodiment of the present invention, Fig. 2 is a plan view schematically showing the floor structure, and Fig. 3 is a perspective view of the main part of Fig. 2. 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 diagram showing a vibration pattern of a conventional floor structure, and FIG. 7 is a schematic diagram showing a vibration pattern of a conventional floor structure. FIG. 8 is a plan view schematically showing a floor structure according to another embodiment, and FIG. 8 is a perspective view of the main part of FIG. 7.

The unit building 10 shown in FIG. 5 has a plurality of lower-floor building units 12 arranged adjacent to each other on top of a foundation 11, a plurality of upper-floor building units 13 arranged adjacent to the upper part of these lower-floor building units 12, and furthermore, A plurality of roof units 14 are mounted on the upper part of the upper floor building unit 13.

Here, the building unit 12.13 is of a wall type, as shown in FIG. It has become.

As shown in FIGS. 1 to 4, the floor structure 21 has four wooden floor girders 23 (fI4 joists and end joists) nailed together to form an outer frame, and a plurality of wooden floor beams 23 (fI4 joists and end joists) are formed in parallel to each other. Pass each of the wooden floor beams 24 (joists) to be placed between the opposing floor girders 23 and 23, and nail both ends of each floor girder 24 to each of the opposing floor girders 23. It is fixed at. Further, in the floor structure 21, a floor plate 25 is directly fixed to the upper part of each floor beam 24 by adhesive or nailing.

In addition, the floor structure 21 connects the floor beams 24 to opposing side surfaces at two positions in the longitudinal direction of the adjacent floor beams 24, and connects the floor beams 24 in the vertical direction orthogonal to the floor surface of the floor beams 24. A connecting member 31 that suppresses relative displacement is fixed with adhesive or nailing.

In addition, in the floor structure 21, the floor beams 24 that wAll
Ceiling hanging trees 32 are arranged parallel to each other along the entire length of the floor beams 24 in the connecting material 31 arrangement area between them, and the ceiling hanging trees 32 are attached to each of the opposing floor beams 23 and each connecting material 31 with adhesive. Or it is fixed with nails.

Then, on the lower surface of the ceiling hanging tree 32, a field edge 41 provided orthogonally to the ceiling hanging tree 32 is fixed with adhesive or nailing, and on the lower surface of each field edge 41, a lower floor such as a gypsum board, etc. The ceiling board 42 is fixed with adhesive or nailing.

Next, the operation of the above embodiment will be explained.

(1) By interconnecting adjacent floor beams 24 using the connecting members 31 and suppressing relative displacement of the floor beams 24, a good vibration damping effect can be ensured in the floor structure 21.

However, in the conventional floor structure, when a child, for example, jumps or runs around on the floor of the building 10, the floor beams 24
The entire floor vibrates due to the excitation of the floor, and this vibration of the entire floor causes the low-pitched part of the heavy floor impact sound. At this time, in the floor structure 21, as described above, the floor beams 24
As a result, the vibration of the entire floor is damped, the low-pitched heavy floor impact noise is reduced, and the comfort is improved.

(2) Compared to a general suspended ceiling structure in which the hanging wood of the ceiling board is directly fixed to the floor beam, a suspended ceiling structure in which the ceiling hanging tree 32 is supported on the floor beam 24 via the connecting member 31 is adopted. Therefore, the solid propagation path of vibrations generated in the floorboards of the upper floors is further reduced, and the lightweight floor impact sound insulation performance, which is a general effect of suspended ceiling structures, is further improved.

(3) Connecting members 3 at two positions in the longitudinal direction of the floor beam 24
1, the ceiling hanging tree 32 is fixed at both ends to each of the opposing floor girders 23, and the two middle parts are fixed to the floor beams 23 facing each other.
It will be fixed to each of the two connecting members 31. Therefore, as the ceiling hanging tree 32 is supported at multiple points and is well damped, the heavy floor impact sound from the ceiling hanging tree 32 to the lower floor ceiling board 42 is mainly reduced in the low frequency range, and the heavy floor impact sound isolation performance is improved. You can improve.

The floor structure 51 shown in FIGS. 7 and 8 differs from the floor structure 21 described above in that the connecting member 31 is arranged only at a single position in the longitudinal direction of the adjacent floor beams 24. This floor structure 51 also exhibits the above-mentioned effects (11 and (2)) that the floor structure 21 has.

In addition, since the floor structure of the present invention accommodates the above-mentioned connecting material within the normal floor thickness range, in order to reduce floor impact noise, it is not necessary to increase the floor thickness and lower the ceiling height. It doesn't come with anything.

[Effects of the Invention] As described above, according to the present invention, the floor impact sound blocking performance of the floor structure can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a floor structure according to an embodiment of the present invention, FIG. 2 is a plan view schematically showing the floor structure, FIG. 3 is a perspective view of the main part of FIG. FIG. 5 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 diagram showing a vibration pattern of a conventional floor structure, and FIG. 7 is another embodiment of the present invention. FIG. 8 is a plan view schematically showing the floor structure according to the present invention, and FIG. 8 is a perspective view of the main part of FIG. 7. 21... Floor structure, 23... Floor beam, 24... Floor beam, 25... Floor plate, 31... Connecting material, 32... Ceiling hanging tree, 42... Lower floor ceiling board. Figure 2 Figure 1 Figure 3 Figure 7 Figure 8

Claims (2)

[Claims] (1) Form an outer frame with multiple floor girders, fix each of the multiple floor girders arranged in parallel to each of the opposing floor girders, and then fix the floor plate to the top of each floor girder. In a floor structure constructed of The hanging trees are arranged parallel to each other along the entire length of the floor beams, and the ceiling hanging trees are fixed to each of the opposing floor beams and the connecting member.
A floor structure characterized in that a lower floor ceiling board is suspended and supported on the ceiling hanging tree. (2) The floor structure according to claim 1, wherein the plurality of connecting members are attached to opposing side surfaces at a plurality of positions in the longitudinal direction of adjacent floor beams.