JPH0816368B2 - Floor structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a floor structure having good heavy floor impact sound insulation performance.

[Prior Art] Conventionally, as a floor structure constituting a wooden building unit or the like, one described in JP-A-62-55358 has been used.

This floor structure forms an outer frame with multiple floor girders,
Each of the 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 fixed to the upper part of each floor girder.

[Problems to be Solved by the Invention] However, in a building constructed by using the floor structure as described above, for example, when a child residing in an upper floor room jumps or runs around, Impact noise caused by vibration (hereinafter referred to as heavy floor impact noise) may be transmitted to the lower floors and impair comfortability.

It is an object of the present invention to mainly reduce the low-pitched sound portion of the heavy floor impact sound of the floor structure.

[Means for Solving the Problems] According to the present invention of claim 1, an outer frame is formed by a plurality of floor girders, and a plurality of floor girders arranged in parallel are opposed to each other. In a floor structure that is fixed to each of the floor beams and a floor plate is fixed to the upper part of each floor beam, the floor beams are connected to opposite sides of the adjacent floor beams, and the floor beams are connected to each other. A connecting member that suppresses relative displacement in the vertical direction orthogonal to the floor surface of the floor, and that the connecting member is in relative contact with the support portion provided on the floor beam side so that relative displacement is possible. It was made to be done. According to a second aspect of the present invention, the connecting member is attached to a supporting portion provided on the floor beam side via a viscoelastic body.

[Operation] As a result of analysis by the inventor of the vibration pattern of the low-pitched portion (63 Hz band) of the heavy floor impact sound generated in the floor structure,
Got the figure. In FIG. 9, a, b, c, d are vibration patterns of each floor beam (displacement in the up-down direction orthogonal to the floor surface of the floor beam). According to FIG. 9, it is recognized that, in the vibration patterns of the adjacent floor beams, the groups a and d and the groups b and c have completely opposite phases. Therefore, in the present invention, based on the analysis of this vibration pattern, adjacent floor girders are connected to each other using a connecting member, and a and b, b and c, c and d in the above vibration pattern are connected. It has been found that a good damping effect can be secured by suppressing each relative displacement.

However, in the conventional floor structure, when a child jumps or runs around on the floor of the building, the entire floor vibrates mainly due to the excitation of the beam, and the vibration of the entire floor causes the low-pitched portion of the heavy floor impact sound. Cause. At this time, in the floor structure of the present invention as set forth in claim 1, the floor girders adjacent to each other in a state where the connecting member is in relative contact with the supporting portion provided on the floor girder side can be displaced. Since they are connected to each other, the vibration energy of the floor beam can be consumed by the friction work, and the vibration of the floor beam can be effectively suppressed.

Further, in the present invention as set forth in claim 2, since the connecting member interconnects the adjacent floor girders via the viscoelastic body, the vibration energy of the floor girder is transmitted to the viscoelastic body. It is consumed by the deformation work, and the vibration of the floor beam can be effectively suppressed.

[Embodiment] FIG. 1 is a schematic view showing a floor structure according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a main structure of the floor structure, and FIG.
FIG. 4 is a schematic diagram showing a wall-type building unit, FIG. 4 is a schematic diagram showing a unit building, FIG. 5 is a schematic diagram showing a floor structure according to a second embodiment of the present invention, and FIG. 6 is a floor structure. FIG. 7 is a perspective view showing the structure of the main part of FIG. 7, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a plan view showing the main part of a floor structure according to a third embodiment of the present invention.
The figure is a schematic diagram showing a vibration pattern of a floor structure.

In the unit building 10 shown in FIG. 4, a plurality of lower floor building units 12 are arranged adjacent to each other on the upper part of the foundation 11, a plurality of upper floor building units 13 are arranged adjacent to each other on the lower floor building unit 12, and further A plurality of roof units 14 are mounted on top of the upper-floor building unit 13.

There is.

Here, the building units 12 and 13 are, as shown in FIG.
It is a wall type and has a floor structure (floor panel) 21 and a floor structure 21.
And a wall panel 22 provided upright on the side edge portion of the.

The floor structure 21 forms an outer frame by nailing four wooden floor girders 23 (side joists and end joists) to each other as shown in FIG. 1 and FIG. By arranging each of the wooden floor girders 24 (joists) placed between the floor girders 23, 23 facing each other, and nailing both ends of each floor girder 24 to each of the floor girders 23 facing each other. Fixed. Furthermore, the floor structure 21 is directly attached to the floor board 25 on the upper part of each floor beam 24.
Are fixed with adhesive or nailing.

Further, in the floor structure 21, piece-shaped hanging tree supports 27 are fixed to a plurality of positions on the lower end side surface of each floor beam 24 at regular intervals by an adhesive or nailing. A ceiling hanging tree 28 along the entire length of the floor beam 24 is fixed to the side surface of each hanging tree receiver 27 with an adhesive or nailing, and the ceiling hanging tree 28 is attached to the lower end surface of each ceiling hanging tree 28. Field edges 29 provided orthogonally are fixed with an adhesive or nailing, and a lower floor ceiling board 30 such as a gypsum board is fixed with an adhesive or nailing to the lower end surface of each field edge 29.

Further, in the floor structure 21, as shown in FIGS. 1 and 2, the floor beams 24 are connected to the opposite side surfaces of the adjacent floor beams 24 at substantially central portions in the longitudinal direction. A connecting member 31 that suppresses relative displacement in the vertical direction orthogonal to the floor surface of the floor beam 24.
Are fixed with an adhesive or nailing.

 Next, the operation of the first embodiment will be described.

According to the above-described embodiment, adjacent floor girders 24 are connected to each other by using the connecting member 31, and the relative displacement of the floor girders 24 is suppressed, so that the floor structure 21 has a good vibration damping effect. Can be secured.

However, in the conventional floor structure, when, for example, a child jumps 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 causes the vibration of the heavy floor impact sound. It causes the bass. At this time, in the floor structure 21, as described above, since the vibration of the floor beam 24 is effectively damped, as a result, the vibration of the entire floor is damped, and a low-weight heavy floor impact sound is generated. It can be reduced and the habitability can be improved.

Floor structure of the second embodiment shown in FIGS. 5, 6 and 7.
121 is a support member 41 fixed by adhesive or nailing to each of the opposite side surfaces of the adjacent floor beam 24, the connecting member 42 is attached in a state capable of relative displacement through the friction generation region. It is a thing. At this time, the connecting member 42 is attached to the supporting member 41 with the bolt 43 and can be displaced relative to the supporting member 41 by rotating around the bolt 43, or the supporting member 41 can be displaced.
Relative displacement can be achieved by linearly moving along a long hole (not shown) provided in 41.

In this floor structure 121, since the connecting member 42 connects the adjacent floor beams 24 to each other in a state where they can be displaced relative to each other with respect to the support portion provided on the floor beam side. , The vibration energy of the floor beam 24 is consumed by friction work,
The vibration of the floor beam 24 can be effectively suppressed.

The floor structure 221 of the third embodiment shown in FIG. 8 has a viscoelastic property such as rubber for the support members 51 fixed to each of the opposite side surfaces of the adjacent floor beam 24 by an adhesive or nailing. Body 52
The connecting material 53 is attached via the. At this time, the connecting member 53 attaches the bolt 54 to the support member 51 while sandwiching the viscoelastic body 52.
It is attached by.

In this floor structure 221, the connecting member 53 is a viscoelastic body 52.
Since the adjacent floor beam 24 is connected to each other via the, the vibration energy of the floor beam 24 is consumed as the deformation work of the viscoelastic body 52, and the vibration of the floor beam 24 is effectively performed. Can control vibration.

In addition, since the floor structure of the present invention accommodates the above-mentioned connecting material within the range of the normal floor thickness, when reducing the heavy floor impact sound, it is inconvenient to increase the floor thickness and lower the ceiling height. It is not accompanied by.

Further, the floor structure of the present invention can also be applied to the floor structure portion of the lower floor room, thereby suppressing the floor vibration generated in the floor constituent portion of the lower floor room, and as a result, the noise caused by this floor vibration. Can be reduced and livability can be improved.

[Advantages of the Invention] As described above, according to the present invention, it is possible to mainly reduce the low-pitched portion of the heavy floor impact sound of the floor structure.

[Brief description of drawings]

FIG. 1 is a schematic view showing a floor structure according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a main structure of the floor structure, and FIG. 3 is a schematic view showing a wall-type building unit, FIG. 4 is a schematic diagram showing a unit building, FIG. 5 is a schematic diagram showing a floor structure according to a second embodiment of the present invention, and FIG. 6 is a perspective view showing a main structure of the floor structure, and FIG. 6 is a plan view of FIG. 6, FIG. 8 is a plan view showing an essential part of a floor structure according to a third embodiment of the present invention, and FIG. 9 is a schematic view showing a vibration pattern of the floor structure. 21, 121, 221 …… Floor structure, 23 …… Floor girder, 24 …… Floor girder, 25 …… Floor plate, 31, 42, 53 …… Connecting material, 41, 51 …… Supporting member, 52 …… Viscoelastic body.

Claims (2)

[Claims] 1. An outer frame is formed by a plurality of floor girders, fixed to each of the floor girders facing each of a plurality of floor girders arranged in parallel with each other, and a floor board is further provided above each floor girder. In a floor structure that is fixed, the floor beams are connected to the opposite sides of adjacent floor beams, and the relative displacement of the floor beams in the vertical direction orthogonal to the floor surface is suppressed. The floor structure, wherein the connecting member is attached, and the connecting member is attached in a state in which the connecting member is in relative contact with the supporting portion provided on the floor beam side and can be displaced relative thereto. 2. A floor structure, wherein the connecting member according to claim 1 is attached to a support portion provided on the floor beam side via a viscoelastic body.