JPH0464638A - Floor structure - Google Patents

Abstract

PURPOSE:To improve the extent of floor impact noise interrupting performance by forming an outer frame with plural floor large beams, anchoring plural floor small beams, parallel set up with each other, to these floor large beams, and locking a floor plate to the top of each floor small beam. CONSTITUTION:An outer frame is formed with four floor large beams, and plural floor small beams 24 parallel set up with each other are anchored to the floor large beams, forming a floor structure 21. Then, a connecting member 31 connecting these floor small beams 24 is attached to the longitudinal side of the floor small beams 24 where this floor structure 21 adjoins, while two ceiling hangers 32, 33 are parallel set up between the floor small beams 24. In succession, the ceiling hanger 32 on one side is locked one side of the opposite floor large beam and the connecting member 31, and the ceiling hanger 33 on the other is locked to the other side of the floor large beam and the connecting member 31. With this constitution, a damping effect is thus securable.

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 floor structures such as those described above, floor impact noise (heavy floor impact sound or light floor impact sound) occurring in the upper floor rooms cannot be avoided. (sound) 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 includes forming an outer frame with a plurality of floor beams, fixing each of the plurality of floor beams arranged in parallel to each other to each of the opposing floor beams, and further In a floor structure constructed by fixing a floor plate to the top of each floor beam, a connecting member that connects the adjacent floor beams is attached to opposing sides approximately at the center in the longitudinal direction of the adjacent floor beams. At the same time, two ceiling suspension trees are placed parallel to the floor beams in the area where connecting materials are placed between adjacent floor beams, and each ceiling suspension tree is set to be longer than half the total length of the floor beams, while one The ceiling hanging tree is fixed to one of the opposing floor beams and the connecting member, the other ceiling hanging tree is fixed to the other opposing floor beam and the connecting member, and the lower floor ceiling board is hung to these ceiling hanging trees. It is designed to be lowered and supported.

[Action Co. According to the present invention, the following effects (1) to (4) are achieved.

(1) As a result of analyzing the vibration pattern of the bass part (631 (z band)) of the heavy floor impact sound generated by the conventional floor structure by the present inventor, FIG. 6 was obtained. In FIG. 6, a, b,
c and 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, set of d, c
It can be seen that these pairs 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 the 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 to 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.

(3) When forming a suspended ceiling structure throughout the floor structure,
Two ceiling hanging trees are installed between adjacent floor beams, one ceiling hanging tree is fixed to one of the opposing floor beams and a connecting member, and the other ceiling hanging tree is connected to the other of the opposing floor beams. Each ceiling hanging tree will not affect the entire length of the floor structure. Therefore, the vibration of the ceiling hanging trees will not extend to the entire length of the lower floor ceiling board, improving heavy floor impact sound isolation performance. can.

(4) In (3) above, each ceiling hanging tree is longer than half the total length of the floor beam. Therefore, even if the connecting member is not placed perfectly in the longitudinal center of the floor beam due to the routing of ceiling wiring, etc., the ceiling hanging tree can be fixed to the connecting member without fail, as described in (2) above. Productivity can be improved while ensuring lightweight floor impact sound isolation performance using a suspended ceiling structure such as this.

[Example] No. 112Y is a sectional view showing a floor structure according to an example 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. , FIG. 4 is a schematic diagram showing a wall-type building unit, FIG. 5 is a schematic diagram showing a unit building, and FIG. 6 is a schematic diagram showing a vibration pattern of a conventional floor structure.

The unit building 10 shown in FIG.
are arranged adjacent to each other, and a plurality of roof units 14 are mounted above the upper floor building units 13.

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

The floor structure 21 is the trj! As shown in Figures 1 to 4, 4
An outer frame is formed by nailing the wooden floor girders 23 (side joists and end joists) together, and each of the plurality of wooden floor girders 24 (joists) arranged in parallel is connected to the floor girder facing each other. 23. The hangings are placed in the darkness of 23, and both ends of each floor beam 24 are fixed by nailing to each of the opposing floor beams 23. Furthermore, the floor structure 21 includes each floor beam 24.
A floor board 25 is directly fixed to the upper part of the floor board 25 by adhesive or nailing.

In addition, the floor structure 21 connects the adjacent floor beams 24 to opposing side surfaces approximately in the center in the longitudinal direction, 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 between the parts is fixed with adhesive or nailing.

In addition, in the floor structure 21, two ceiling hanging trees 32 and 33 are arranged parallel to the floor beams 24 in the connecting member 31 arrangement area between adjacent floor beams 24, and each ceiling hanging tree 32 and 33 are set longer than half of the total length of the floor beam 24. At this time, one ceiling hanging tree 32 is fixed to one of the opposing floor beams 23 and the connecting member 31 with adhesive or nailing, and the other ceiling hanging tree 33 is fixed to the other of the opposing floor beams 23 and the connecting member 31. 3
1 and is fixed with adhesive or nailing. And, on the lower surface of these ceiling hanging trees 32 and 33, the hanging trees 32 and 33 are
．． A field edge 41 provided orthogonally to the field edge 33 is fixed with adhesive or nailing, and a lower floor ceiling board 42 such as a gypsum board is fixed to the lower surface of each field edge 41 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 attenuated, 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 wood 32, 33 is supported on the floor beam 24 via the connecting member 31 is used. This reduces the solid propagation path of vibrations generated in the floorboards of the upper floors, further improving the lightweight floor impact sound isolation performance, which is a common effect of suspended ceiling structures.

(3) When forming a suspended ceiling structure over the entire area of the floor structure 21, two ceiling suspended trees 32.
33, one ceiling hanging tree 32 is connected to the opposing floor girder 23.
and the connecting member 31, and the other ceiling hanging tree 33 is fixed to the other of the opposing floor beams 23 and the connecting member 31, and each ceiling hanging tree 32, 33 is fixed to the entire length of the floor structure 21. Therefore, the vibrations of the ceiling hanging trees 32 and 33 do not extend to the entire length of the lower floor ceiling board 42, and the heavy floor impact sound isolation performance can be improved.

(4) In (3) above, each ceiling hanging tree 32, 33 is longer than half the total length of the floor beam 24.

Therefore, due to the routing circumstances of the ceiling wiring, etc., the connecting material 31
Even if the ceiling suspension beams 32 and 33 are not placed perfectly in the longitudinal center of the floor beams 24, the ceiling hanging trees 32 and 33 can be fixed to the connecting members 31, and the lightweight floor impact due to the suspended ceiling structure as described in (2) above can be ensured. Productivity can be improved while ensuring sound isolation performance.

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 drawings]

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, and FIG. 6 is a schematic diagram showing a vibration pattern of a conventional floor structure. 21... Floor structure, 3... Floor beam, 4... Floor beam, 5... Floor plate, 1... Connecting material, 2.33... Ceiling suspension tree, 2... Lower floor ceiling board.

Claims (1)

[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 the floor structure constructed by the Two ceiling hanging trees are arranged parallel to the floor beams in the connecting material installation area, each ceiling hanging tree is set longer than half the total length of the floor beam, and one ceiling hanging tree is set to be longer than the entire length of the floor beam. A floor structure characterized in that one of the ceiling hanging trees is fixed to the connecting member, the other ceiling hanging tree is fixed to the other of the opposing floor girders and the connecting member, and a lower floor ceiling board is suspended and supported from the ceiling hanging trees. body.