JPS5968471A - Floor structure of concrete building - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a concrete slab floor structure.

This type of floor structure has already been proposed by the inventor of this application, as shown in FIGS. 1 and 2, for example. FIG. 1 shows the floor structure of a Western-style room, and FIG. 2 is a plan view showing a state in which the floor covering material in FIG. 1 has been removed.

Specifically, this floor structure consists of a concrete slab S with a thickness of 15 (Hllm) and a joining phase M, which is pasted in stripes at intervals of about 200 fnm, that is, a width of 50 ram.
A double-sided adhesive tape M with a thickness of 0.5111111, a foamed polystyrene subfloor material B that is adhered to the tape M and integrally laid on the concrete slab S, and a floor that is stretched over the subfloor material B. It is made up of finishing material F, that is, scrap boards such as plywood and barkerato. Note that W is a baseboard.

The above-mentioned floor base material B is made by laying unit base materials together and arranging them. The base of this unit is a board with a width of 600mm, a length of 90Q qnm, and a thickness of 50mm on the upper side, and on the front side, crossbars 1 for floor finishing @ F tensioning are buried at 4'50y11+++ intervals. It is. The floor finishing material F1, that is, plywood, has a thickness of 12 Inm, and is nailed to the crosspiece 1.

Although not shown, the bonding material M may be applied or stuck in an island shape. Further, as the bonding material M, there is also an example in which a synthetic resin adhesive or the like is used.

The advantage of this floor structure is that the concrete slab 8J floor base material B is integrated by the bonding material M, and both S! =
Since the distance l between B is small and the space is therefore small,
Even if an impact is applied from above the floor finishing material F, the natural vibrations of the floor finishing material F and the subfloor material B can be suppressed, and the sound insulation performance can be prevented from deteriorating compared to the case of only a concrete slab.

Incidentally, Table 1 below shows the sound insulation performance of this floor structure, that is, the results of floor impact sound level measurements.

Table 1 The level of the floor impact sound was measured in accordance with the JISA1418 method using a heavy floor impact sound generator.

That is, as shown in FIGS. 3 and 4, X×Y=2,
800 Tomo
,71<2. The tire T was dropped at /ff13, the sound was received by microphone 3 in the sound receiving room downstairs, and the sound was analyzed by an octave band analyzer.

Each of the above batting point seats 1. The location of 厖2,463 is as shown in Figure 4.
These are the three diagonal points on the floor of the sound source room. A microphone 3 in the sound receiving chamber is placed directly below each impact point.

The number of times the tire t falls is 8 times for each impact point, and the L number is the average value.

Although the conventional floor structure described above has the above advantages, the following problems still remain.

In other words, floor finishing material F is nailed to branch 1 and flooring material B is
Since it is only a stop, both F.

There is a slight gap between the two, making it impossible to bring them into close contact. For this reason, especially when an impact is applied to the floor finishing material F between the branches of the subfloor material B, there is a problem in that it is difficult to suppress the level of floor impact sound on the lower floor to a level lower than when only the concrete slab S is used. was left behind.

This invention was made by paying attention to such problems in floor structures, and uses a bonding material to integrate the subfloor material and floor finishing material in conventional floor structures as shown in FIGS. 1 and 2. The purpose of the present invention is to solve the above problems by adhering to.

Hereinafter, this invention will be explained based on FIGS. 5 to 7.

FIG. 5 is a cross-sectional view showing an embodiment of the floor structure of a Western-style room according to the present invention, and FIG. 6 is a plan view showing the pattern of adhesion of the bonding material for the floor finishing material when the floor finishing material in FIG. 5 is removed. , 7th
This figure is a plan view showing another aspect of the bonding material pattern shown in FIG. 6.

In each figure, the same or equivalent parts as in FIGS. 1 and 2 are given the same reference numerals, and their explanations will be omitted.

First, to explain the structure, the floor structure according to the present invention is arranged such that the concrete slab S and the slabs -8 to 8 are fixed together by pasting them in stripes at regular intervals. A bonding material M, a subflooring material B made of a plate-shaped foamed plastic that is fixed to the bonding material M and integrally laid on the concrete slab S, and a flooring material F stretched over the subflooring material B. This conventional floor structure is characterized by the fact that the surface of the foamed plastic of the floor base material B and the floor finishing material are fixed together with an adhesive Ml.

- The bonding wing M referred to in the present invention is a material for fixing the flooring material to the concrete slab, and in addition to a metal jig, the above-mentioned double-sided adhesive tape or adhesive can be used.

The bonding material has a distance between each edge of the joint cavity, preferably a distance between the edges of the bonded part between the subfloor material and the joint groove, of 7 mm or less, or a distance between the subfloor material and the concrete slab. It is advisable to install it firmly between the concrete slab and the subfloor material so that the number is 5 or less.

The above-mentioned adhesive M1 is a material that is well compatible with the material of the concrete slab S (base material such as double-sided adhesive tape or synthetic resin adhesive) and B.

As the adhesive, it is preferable to use a polymer-containing cement thread adhesive or an epoxy adhesive, such as a cement adhesive mixed with an acrylic or ethylene-vinyl acetate polymer dispersion. Since the adhesive strength appears quickly and strongly, it is effective to be able to work indoors after about two days.

In addition, for double-sided adhesive tape, it is best to use a rubber-based adhesive, acrylic-based adhesive, etc., and to use cloth or plastic tape as the base sheet, making it easy to arrange joints of a certain width. You can obtain effects such as ease of use.

Further, as shown in FIG. 6, this adhesive M1 is applied to the vertical butting portions of the unit base material and the crosspieces l.

Paste it between l. Adhesive Ml is applied to the butt part.
straddles this. The adhesive M1 can be applied not only in stripes but also in islands (not shown).
Preferably, the density of stripes or islands is increased. 4
FIG. 37 shows an example in which the bonding material M1 is also applied to the side abutting portions of the unit base material. This is an example of a case where the tabs are applied in a grid pattern as a whole.

In the present invention, in order for the floor finishing material to withstand large stress such as warping force due to dry and wet conditions, nails are installed near the surface of the foamed plastic of the unit base material into crossbars embedded in the same area as the surface. It is advisable to fix the floor covering material by gluing or the like. In addition, as the crosspiece, synthetic wood such as irrigation material or especially low-expanded polystyrene is used. In such a case, by simply bonding the finishing material and the surface of the foamed plastic of the unit base material using the adhesive Mt, it is possible to reliably prevent the foam from peeling off near the surface of the foam and maintain the sound insulation performance. can do.

The distance between the edges of the adhesive Ml and the crosspiece or adhesive M1 located adjacent thereto is preferably 35 degrees or less, preferably 30 degrees or less.

Next, the sound insulation performance of the floor structure according to the present invention will be clarified by measuring the level of floor impact sound according to an example.

[Example 1] Sound source room of a concrete building as shown in Figures 3 and 4 (Floor area XXY = 2,800m1X 3゜67
0ii) concrete slab S (thickness 150mm)
The floor structure shown in Figures 5 and 6 was installed.

That is, first, double-sided adhesive tape M with a width of 50 strips and a thickness of 0.5 strips was applied to a unit flooring material B made of expanded polystyrene with a flat bottom (900 ynm x 590 yumi, 5 QITIIB).
After removing the release paper from the tape M, spread it on a well-cleaned concrete slab S, and step on the top to stick it.

Next, from the top of the unit flooring material that has been laid,
As shown in the figure, apply a double-sided adhesive tape M+ of width 5r)am thickness Q and 5g IIH, place the floor finishing board F1, that is, plywood of thickness 12mm, on top of it and nail it to crosspiece 1 of floor base material B. The floor structures shown in FIGS. 5 and 6 were then formed.

The level of the floor @ explosive sound was measured on the obtained floor structure in the same manner as described above in accordance with the JISA1418 method using a gravimetric impact generator, and the following results were obtained.

Table 2 [Example 2] A floor structure with the same structure as in Example 1 was formed in the same manner as in Example 1, except that the double-sided adhesive tape M1 was pasted on the floor base @B in a grid pattern as shown in Figure 7. .

Regarding the obtained floor structure, the level of floor impact sound was measured in the same manner as in Example 1, and the following results were obtained.

From the above results, it was found that the L number of the examples shown in Tables 2 and 3 was significantly improved compared to that of the conventional floor structure shown in Table 1. The reason for this can be considered as follows.

In other words, the floor finishing material F is bonded to the subfloor surface B by the bonding material Ml.
Since it is in close contact with the flooring material and is fixed integrally with it, even if an impact is applied from above the flooring material F, there is almost no space between the flooring material and the subflooring material, so the flooring material This is thought to be because the vibrations are suppressed, or because the vibrations are buffered by the damping effect (distribution effect) due to the viscoelasticity of the adhesive.

As explained above, the present invention has a structure in which the floor base material and the floor finishing material in the conventional floor structure are bonded together, thereby improving the sound insulation performance of the floor, especially the sound insulation performance against heavy floor impact noise. You can make improvements.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing the floor structure of a conventional Western-style room in a concrete building, Figure 2 is a plan view with the floor covering material in Figure 1 removed, and Figure 3 is a weight impact sound level measuring device. 4(a) and 4(b) are plan views showing the sound source (imprinting point) position in the sound source chamber and the sound receiving (microphone) position in the sound receiving chamber in FIG. 3, and FIG. 5 is a sectional view corresponding to FIG. 1 showing an embodiment of the floor structure of a concrete building according to the present invention, FIG. 6 is a plan view showing a state in which the floor finishing material in FIG. FIG. 7 is a plan view showing another construction mode of the bonding material for floor finishing materials shown in FIGS. S... Concrete slab M... Bonding material B... Floor surface area F... Floor finishing material] 111... is* (1, 2, 3, (a), 4, (0) ) Figure 5 Figure 6 Figure 7 Continued from page 1 ■Applicant: Kenji Yamada, Housing and Urban Development Corporation, 14-6, Kudankita-chome, Chiyoda-ku, Tokyo ■Applicant: Mitsubishi Yuka Co., Ltd., Tokyo 2-5-2 Marunouchi, Chiyoda-ku ■Applicant Yuka Pardish Co., Ltd. 1000-354 Kawajiri-cho, Yokkaichi City

Claims (1)

[Claims] A concrete slab, a bonding material fixedly placed on the slab at regular intervals, and a foamed plastic flooring material fixed to the bonding material and integrally laid on the concrete slab; A concrete building comprising a floor structure consisting of a floor covering material stretched over the floor covering material, wherein the surface of the foamed plastic of the floor covering material and the floor finishing material are fixed together with an adhesive. floor structure.